Darken the dark theme, and hover a tree row like a menu

The client's own look-and-feel defaults now live beside LookAndFeelManager as
FlatLaf properties files, which FlatLaf loads on top of each theme's own,
instead of a handful of UIManager.put calls.

The dark theme is built on three surfaces keyed to the toolbar's #282828: the
window chrome, the tab strips and menu bar one step below it at #232323, and
the content the client shows — channel tree, chat log, text fields, lists — at
#1e1e1e. Selections are #364b6f, and channel names in the tree are white; the
chat lines about server events keep the blue they had, which channel names no
longer carry. Everything FlatLaf derives (borders, scroll bars, hover states)
follows from those.

A read-only editor pane is a chat log or an information view here, not a
disabled input, so it keeps the content background rather than FlatLaf's
inactive one; and since neither a text view nor a tree fills its viewport, the
space below the last line takes their background instead of the window's.

The row under the pointer is now washed in the same colour a hovered menu is,
rather than outlined. FlatLaf states that colour as a shift of the surface
beneath it, so it is resolved against the window background exactly as the
menu bar resolves it.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

.gitignore

@@ -6,6 +6,7 @@ out/
 
 # The bundled proprietary TeamSpeak 3 client (reference binary, not our source)
 /TeamSpeak3-Client-linux_amd64/
+/re-android/
 
 # Packages
 *.jar

ts3-client/core/src/main/java/com/ts3client/config/Settings.java

@@ -27,6 +27,12 @@ public final class Settings {
         CONTINUOUS
     }
 
+    /** Which look-and-feel variant the window is painted with. */
+    public enum Appearance {
+        LIGHT,
+        DARK
+    }
+
     /** Voice-activation strategy, mirroring the TS3 client's VAD modes. */
     public enum VadMode {
         /** Speech-probability detector only. */
@@ -95,6 +101,12 @@ public final class Settings {
     public boolean music = false;
     /** Master playback gain, 0..1 (may exceed 1 for boost up to 2). */
     public double outputVolume = 1.0;
+    /**
+     * Global multiplier on top of {@link #outputVolume} and {@link #soundVolume},
+     * controlled from the toolbar's Master Volume slider so both can be ridden
+     * with one control. 0..2, same boost headroom as the other volumes.
+     */
+    public double masterVolume = 1.0;
     /** Microphone input gain multiplier applied before VAD/encode. */
     public double inputVolume = 1.0;
     /** Remove steady background noise from the microphone (spectral denoise). */
@@ -119,6 +131,15 @@ public final class Settings {
     /** Extra folder to look for icon packs in, on top of the well-known locations. */
     public String iconPackDir = "";
 
+    /** Look-and-feel variant; see {@link Appearance}. */
+    public Appearance appearance = Appearance.LIGHT;
+
+    // ---- window chrome ----
+    /** Whether the status bar at the bottom of the window is shown. */
+    public boolean showStatusBar = true;
+    /** Whether the Master Volume slider is shown on the toolbar. */
+    public boolean showMasterVolumeSlider = true;
+
     /** Which actions make a sound, and which ones are important enough to survive muting. */
     public final NotificationSettings notifications = new NotificationSettings();
 
@@ -155,6 +176,16 @@ public final class Settings {
         return new File(identityFile);
     }
 
+    /** {@link #outputVolume} scaled by the Master Volume slider. */
+    public double effectiveOutputVolume() {
+        return outputVolume * masterVolume;
+    }
+
+    /** {@link #soundVolume} scaled by the Master Volume slider. */
+    public double effectiveSoundVolume() {
+        return soundVolume * masterVolume;
+    }
+
     /** The directory holding all persistent client state (settings, identities, caches). */
     public static File configDir() {
         return DIR;
@@ -185,6 +216,7 @@ public final class Settings {
         packetLoss = parseI(props.getProperty("packetLoss"), packetLoss);
         music = parseB(props.getProperty("music"), music);
         outputVolume = parseD(props.getProperty("outputVolume"), outputVolume);
+        masterVolume = parseD(props.getProperty("masterVolume"), masterVolume);
         inputVolume = parseD(props.getProperty("inputVolume"), inputVolume);
         denoise = parseB(props.getProperty("denoise"), denoise);
         denoiserLevel = parseD(props.getProperty("denoiserLevel"), denoiserLevel);
@@ -195,6 +227,9 @@ public final class Settings {
         soundPackDir = props.getProperty("soundPackDir", soundPackDir);
         iconPack = props.getProperty("iconPack", iconPack);
         iconPackDir = props.getProperty("iconPackDir", iconPackDir);
+        appearance = parseAppearance(props.getProperty("appearance"), appearance);
+        showStatusBar = parseB(props.getProperty("showStatusBar"), showStatusBar);
+        showMasterVolumeSlider = parseB(props.getProperty("showMasterVolumeSlider"), showMasterVolumeSlider);
         notifications.load(props);
     }
 
@@ -223,6 +258,7 @@ public final class Settings {
         props.setProperty("packetLoss", Integer.toString(packetLoss));
         props.setProperty("music", Boolean.toString(music));
         props.setProperty("outputVolume", Double.toString(outputVolume));
+        props.setProperty("masterVolume", Double.toString(masterVolume));
         props.setProperty("inputVolume", Double.toString(inputVolume));
         props.setProperty("denoise", Boolean.toString(denoise));
         props.setProperty("denoiserLevel", Double.toString(denoiserLevel));
@@ -233,6 +269,9 @@ public final class Settings {
         props.setProperty("soundPackDir", soundPackDir);
         props.setProperty("iconPack", iconPack);
         props.setProperty("iconPackDir", iconPackDir);
+        props.setProperty("appearance", appearance.name());
+        props.setProperty("showStatusBar", Boolean.toString(showStatusBar));
+        props.setProperty("showMasterVolumeSlider", Boolean.toString(showMasterVolumeSlider));
         notifications.store(props);
     }
 
@@ -245,6 +284,15 @@ public final class Settings {
         }
     }
 
+    private static Appearance parseAppearance(String v, Appearance def) {
+        if (v == null) return def;
+        try {
+            return Appearance.valueOf(v);
+        } catch (IllegalArgumentException e) {
+            return def;
+        }
+    }
+
     private static VadMode parseVadMode(String v, VadMode def) {
         if (v == null) return def;
         try {

ts3-client/core/src/main/java/com/ts3client/net/ChannelAdmin.java

@@ -0,0 +1,275 @@
+package com.ts3client.net;
+
+import com.github.manevolent.ts3j.api.Channel;
+import com.github.manevolent.ts3j.command.MultiCommand;
+import com.github.manevolent.ts3j.command.SingleCommand;
+import com.github.manevolent.ts3j.command.parameter.CommandSingleParameter;
+import com.github.manevolent.ts3j.event.UnknownTeamspeakEvent;
+import com.github.manevolent.ts3j.protocol.ProtocolRole;
+import com.ts3client.net.filetransfer.FileTransfer;
+import com.ts3client.net.filetransfer.FileTransferManager;
+import com.ts3client.net.filetransfer.RemoteFile;
+
+import java.io.File;
+import java.nio.file.Files;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
+import java.util.zip.CRC32;
+
+/**
+ * Everything the channel editor needs of the server: reading and writing a channel's
+ * properties and its needed-power permissions, plus the virtual server's icon store.
+ *
+ * <p>Split out of {@link TeamspeakConnection} because it is a self-contained request/
+ * response corner of the protocol that only the editor uses. Every call here blocks and
+ * must run off the UI thread; the connection's public wrappers do that.
+ */
+final class ChannelAdmin {
+
+    /** The directory a server's icons live in, where the server has one. */
+    private static final String ICON_DIRECTORY = "icons";
+
+    /** How long to wait for a whole icon to travel over the file connection. */
+    private static final long ICON_UPLOAD_TIMEOUT_MS = 30_000;
+
+    private final TeamspeakConnection conn;
+
+    /**
+     * The {@code channelpermlist} reply in progress. TeamSpeak answers the command with a
+     * burst of {@code notifychannelpermlist} events rather than a command response, and
+     * only the first of them repeats the channel id, so one request may be in flight at a
+     * time and its entries are collected here until the command itself completes.
+     */
+    private volatile PermRequest permRequest;
+
+    ChannelAdmin(TeamspeakConnection conn) {
+        this.conn = conn;
+    }
+
+    // ---- channel properties ----
+
+    /** Reads a channel's full property set. */
+    ChannelSettings readSettings(int channelId) throws Exception {
+        Channel info = conn.socket().getChannelInfo(channelId);
+        if (info == null) throw new IllegalStateException("The server did not describe that channel");
+        return ChannelSettings.from(channelId, info.getMap());
+    }
+
+    /**
+     * Creates a channel below {@code parentId} (0 being the top level).
+     *
+     * @param properties the new channel's properties, as {@link ChannelSettings#creationParameters}
+     * @return the new channel's id
+     */
+    int create(int parentId, Map<String, String> properties) throws Exception {
+        SingleCommand cmd = new SingleCommand("channelcreate", ProtocolRole.CLIENT);
+        cmd.add(new CommandSingleParameter("cpid", Integer.toString(parentId)));
+        for (Map.Entry<String, String> property : properties.entrySet()) {
+            cmd.add(new CommandSingleParameter(property.getKey(), property.getValue()));
+        }
+        for (SingleCommand answer : conn.socket().executeCommand(cmd).get()) {
+            int cid = parseInt(answer.toMap().get("cid"), -1);
+            if (cid > 0) return cid;
+        }
+        // Some servers acknowledge the command without naming the channel; the
+        // notifychannelcreated they also send does name it, so read it off the model
+        // once that event has been handled.
+        conn.awaitEventsProcessed();
+        ChannelNode created = conn.getModel().findChannelByName(parentId, properties.get("channel_name"));
+        if (created == null) throw new IllegalStateException("The server did not report the new channel");
+        return created.id;
+    }
+
+    /** Applies {@code changes} (property name to value) with a single {@code channeledit}. */
+    void edit(int channelId, Map<String, String> changes) throws Exception {
+        if (changes.isEmpty()) return;
+        SingleCommand cmd = new SingleCommand("channeledit", ProtocolRole.CLIENT);
+        cmd.add(new CommandSingleParameter("cid", Integer.toString(channelId)));
+        for (Map.Entry<String, String> change : changes.entrySet()) {
+            cmd.add(new CommandSingleParameter(change.getKey(), change.getValue()));
+        }
+        conn.socket().executeCommand(cmd).complete();
+    }
+
+    // ---- channel permissions ----
+
+    /**
+     * Reads the permissions set directly on a channel.
+     *
+     * @return permission name to value, holding only the permissions the channel itself
+     *         carries — anything inherited from a group is absent
+     */
+    Map<String, Integer> readPermissions(int channelId) throws Exception {
+        if (!conn.getModel().hasPermissionNames()) {
+            // channelpermlist reports numeric ids, which only the permissionlist response
+            // gives names to; without it the values could not be told apart.
+            throw new IllegalStateException("The server did not send its permission list");
+        }
+        PermRequest request = new PermRequest(channelId);
+        permRequest = request;
+        try {
+            SingleCommand cmd = new SingleCommand("channelpermlist", ProtocolRole.CLIENT,
+                    new CommandSingleParameter("cid", Integer.toString(channelId)));
+            conn.socket().executeCommand(cmd).complete();
+            // The entries were queued on the event thread before the command's own reply
+            // was read, so draining that thread is what guarantees they have all landed.
+            conn.awaitEventsProcessed();
+        } finally {
+            permRequest = null;
+        }
+
+        Map<String, Integer> byName = new LinkedHashMap<>();
+        for (Map.Entry<Integer, Integer> entry : request.values.entrySet()) {
+            String name = conn.getModel().permissionName(entry.getKey());
+            if (name != null) byName.put(name, entry.getValue());
+        }
+        return byName;
+    }
+
+    /** Collects one {@code notifychannelpermlist} entry for the request in flight. */
+    void onPermListEntry(UnknownTeamspeakEvent e) {
+        PermRequest request = permRequest;
+        if (request == null) return;
+        String cid = e.get("cid");
+        if (cid != null && !cid.isEmpty() && parseInt(cid, -1) != request.channelId) return;
+        int permId = parseInt(e.get("permid"), -1);
+        if (permId >= 0) request.values.put(permId, parseInt(e.get("permvalue"), 0));
+    }
+
+    /**
+     * Sets and clears channel permissions by name. A permission set to a value is added or
+     * updated; one that is cleared is removed so the channel inherits it again.
+     */
+    void writePermissions(int channelId, Map<String, Integer> set, Collection<String> remove)
+            throws Exception {
+        if (!set.isEmpty()) {
+            List<SingleCommand> parts = new ArrayList<>(set.size());
+            for (Map.Entry<String, Integer> perm : set.entrySet()) {
+                parts.add(new SingleCommand("channeladdperm", ProtocolRole.CLIENT,
+                        new CommandSingleParameter("permsid", perm.getKey()),
+                        new CommandSingleParameter("permvalue", Integer.toString(perm.getValue()))));
+            }
+            send("channeladdperm", channelId, parts);
+        }
+        if (!remove.isEmpty()) {
+            List<SingleCommand> parts = new ArrayList<>(remove.size());
+            for (String name : remove) {
+                parts.add(new SingleCommand("channeldelperm", ProtocolRole.CLIENT,
+                        new CommandSingleParameter("permsid", name)));
+            }
+            send("channeldelperm", channelId, parts);
+        }
+    }
+
+    private void send(String name, int channelId, List<SingleCommand> parts) throws Exception {
+        MultiCommand cmd = new MultiCommand(name, ProtocolRole.CLIENT, parts);
+        cmd.add(new CommandSingleParameter("cid", Integer.toString(channelId)));
+        conn.socket().executeCommand(cmd).complete();
+    }
+
+    // ---- the server's icon store ----
+
+    /**
+     * The ids of the icons uploaded to this virtual server, which live in channel 0's file
+     * repository as {@code /icon_<id>}.
+     */
+    List<Long> listIcons() throws Exception {
+        List<Long> ids = new ArrayList<>();
+        boolean hasIconDirectory = false;
+        for (RemoteFile file : fileTransfers().list(0, "", "/")) {
+            if (file.isDirectory()) {
+                hasIconDirectory |= file.getName().equals(ICON_DIRECTORY);
+                continue;
+            }
+            addIcon(ids, file);
+        }
+        // Newer servers keep the icons in their own directory rather than loose in the
+        // repository's root; both layouts exist, so whichever this server uses is read.
+        if (hasIconDirectory) {
+            for (RemoteFile file : fileTransfers().list(0, "", "/" + ICON_DIRECTORY)) {
+                if (!file.isDirectory()) addIcon(ids, file);
+            }
+        }
+        return ids;
+    }
+
+    private static void addIcon(List<Long> ids, RemoteFile file) {
+        if (!file.getName().startsWith("icon_")) return;
+        long id = parseLong(file.getName().substring("icon_".length()));
+        if (id > 0 && !ids.contains(id)) ids.add(id);
+    }
+
+    /**
+     * Uploads an image as a server icon.
+     *
+     * @return the icon's id, which TeamSpeak derives from the file's CRC32
+     */
+    long uploadIcon(File source) throws Exception {
+        byte[] data = Files.readAllBytes(source.toPath());
+        if (data.length == 0) throw new IllegalArgumentException("That file is empty");
+        if (data.length > TeamspeakConnection.MAX_ICON_BYTES) {
+            throw new IllegalArgumentException("Icons may not be larger than "
+                    + (TeamspeakConnection.MAX_ICON_BYTES / 1024) + " KiB");
+        }
+        CRC32 crc = new CRC32();
+        crc.update(data);
+        long id = crc.getValue();
+
+        CountDownLatch done = new CountDownLatch(1);
+        FileTransfer transfer = fileTransfers().upload(0, "", "/icon_" + id, source, true, t -> {
+            if (t.isDone()) done.countDown();
+        });
+        if (!done.await(ICON_UPLOAD_TIMEOUT_MS, TimeUnit.MILLISECONDS)) {
+            throw new IllegalStateException("The upload did not finish in time");
+        }
+        if (transfer.getState() != FileTransfer.State.COMPLETED) {
+            throw new IllegalStateException(transfer.getErrorMessage() == null
+                    ? "The upload failed" : transfer.getErrorMessage());
+        }
+        return id;
+    }
+
+    void deleteIcon(long iconId) throws Exception {
+        fileTransfers().delete(0, "", "/icon_" + iconId);
+    }
+
+    private FileTransferManager fileTransfers() {
+        FileTransferManager ft = conn.fileTransfers();
+        if (ft == null) throw new IllegalStateException("Not connected");
+        return ft;
+    }
+
+    // ---- helpers ----
+
+    private static int parseInt(String value, int fallback) {
+        try {
+            return value == null || value.isEmpty() ? fallback : Integer.parseInt(value.trim());
+        } catch (NumberFormatException e) {
+            return fallback;
+        }
+    }
+
+    private static long parseLong(String value) {
+        try {
+            return Long.parseLong(value.trim());
+        } catch (NumberFormatException e) {
+            return 0;
+        }
+    }
+
+    /** One in-flight {@code channelpermlist} and the entries received for it so far. */
+    private static final class PermRequest {
+        final int channelId;
+        final Map<Integer, Integer> values = new ConcurrentHashMap<>();
+
+        PermRequest(int channelId) {
+            this.channelId = channelId;
+        }
+    }
+}

ts3-client/core/src/main/java/com/ts3client/net/ChannelSettings.java

@@ -0,0 +1,216 @@
+package com.ts3client.net;
+
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+/**
+ * The editable properties of a channel, as read from {@code channelinfo} and written
+ * back with {@code channeledit}.
+ *
+ * <p>Kept apart from {@link ChannelNode} on purpose: the node is the live tree state the
+ * server pushes at us, while this is a snapshot an editor works on. Submitting compares
+ * the edited copy against the untouched original ({@link #changesFrom}) so only the
+ * properties the user actually changed are sent — TeamSpeak refuses the whole command
+ * when it contains one property the client may not modify, even an unchanged one.
+ */
+public final class ChannelSettings {
+
+    /** How long a channel outlives its last occupant. */
+    public enum Type {TEMPORARY, SEMI_PERMANENT, PERMANENT}
+
+    public int id;
+    public int parentId;
+    public String name = "";
+    public String topic = "";
+    public String description = "";
+    public String phoneticName = "";
+    /** Whether the server reports a password on this channel; the password itself is never readable. */
+    public boolean hasPassword;
+    /** {@code null} leaves the password alone, {@code ""} removes it, anything else sets it. */
+    public String password;
+    public Type type = Type.PERMANENT;
+    public boolean defaultChannel;
+    /** The sibling this channel sorts after, or 0 to sort first. */
+    public int order;
+    public int neededTalkPower;
+    /** TeamSpeak codec id; see {@code com.github.manevolent.ts3j.api.Codec}. */
+    public int codec = 4;
+    public int codecQuality = 6;
+    public boolean encrypted = true;
+    public int deleteDelay;
+    public boolean maxClientsUnlimited = true;
+    public int maxClients = 16;
+    public boolean familyInherited = true;
+    public boolean familyUnlimited;
+    public int maxFamilyClients = 16;
+    public long iconId;
+
+    /** Reads a {@code channelinfo} (or {@code channellist}) property map. */
+    public static ChannelSettings from(int channelId, Map<String, String> props) {
+        ChannelSettings s = new ChannelSettings();
+        s.id = channelId;
+        s.parentId = intOf(props, "pid", intOf(props, "cpid", 0));
+        s.name = strOf(props, "channel_name");
+        s.topic = strOf(props, "channel_topic");
+        s.description = strOf(props, "channel_description");
+        s.phoneticName = strOf(props, "channel_name_phonetic");
+        s.hasPassword = boolOf(props, "channel_flag_password");
+        if (boolOf(props, "channel_flag_permanent")) s.type = Type.PERMANENT;
+        else if (boolOf(props, "channel_flag_semi_permanent")) s.type = Type.SEMI_PERMANENT;
+        else s.type = Type.TEMPORARY;
+        s.defaultChannel = boolOf(props, "channel_flag_default");
+        s.order = intOf(props, "channel_order", 0);
+        s.neededTalkPower = intOf(props, "channel_needed_talk_power", 0);
+        s.codec = intOf(props, "channel_codec", 4);
+        s.codecQuality = intOf(props, "channel_codec_quality", 6);
+        s.encrypted = !boolOf(props, "channel_codec_is_unencrypted");
+        s.deleteDelay = intOf(props, "channel_delete_delay", 0);
+        s.maxClientsUnlimited = boolOf(props, "channel_flag_maxclients_unlimited");
+        s.maxClients = Math.max(0, intOf(props, "channel_maxclients", 16));
+        s.familyInherited = boolOf(props, "channel_flag_maxfamilyclients_inherited");
+        s.familyUnlimited = boolOf(props, "channel_flag_maxfamilyclients_unlimited");
+        s.maxFamilyClients = Math.max(0, intOf(props, "channel_maxfamilyclients", 16));
+        s.iconId = longOf(props, "channel_icon_id");
+        return s;
+    }
+
+    public ChannelSettings copy() {
+        ChannelSettings c = new ChannelSettings();
+        c.id = id;
+        c.parentId = parentId;
+        c.name = name;
+        c.topic = topic;
+        c.description = description;
+        c.phoneticName = phoneticName;
+        c.hasPassword = hasPassword;
+        c.password = password;
+        c.type = type;
+        c.defaultChannel = defaultChannel;
+        c.order = order;
+        c.neededTalkPower = neededTalkPower;
+        c.codec = codec;
+        c.codecQuality = codecQuality;
+        c.encrypted = encrypted;
+        c.deleteDelay = deleteDelay;
+        c.maxClientsUnlimited = maxClientsUnlimited;
+        c.maxClients = maxClients;
+        c.familyInherited = familyInherited;
+        c.familyUnlimited = familyUnlimited;
+        c.maxFamilyClients = maxFamilyClients;
+        c.iconId = iconId;
+        return c;
+    }
+
+    /**
+     * The {@code channeledit} parameters needed to turn {@code original} into this.
+     *
+     * @return property name to value, empty when nothing changed
+     */
+    public Map<String, String> changesFrom(ChannelSettings original) {
+        Map<String, String> changes = new LinkedHashMap<>();
+        putIfChanged(changes, "channel_name", name, original.name);
+        putIfChanged(changes, "channel_topic", topic, original.topic);
+        putIfChanged(changes, "channel_description", description, original.description);
+        putIfChanged(changes, "channel_name_phonetic", phoneticName, original.phoneticName);
+        if (password != null) changes.put("channel_password", password);
+        if (type != original.type) {
+            // The three flags are mutually exclusive and the server wants the whole set:
+            // clearing one without setting another leaves the channel type ambiguous.
+            changes.put("channel_flag_permanent", flag(type == Type.PERMANENT));
+            changes.put("channel_flag_semi_permanent", flag(type == Type.SEMI_PERMANENT));
+            changes.put("channel_flag_temporary", flag(type == Type.TEMPORARY));
+        }
+        // Clearing the default flag is meaningless — some channel has to be the default —
+        // so only setting it is ever sent.
+        if (defaultChannel && !original.defaultChannel) changes.put("channel_flag_default", "1");
+        putIfChanged(changes, "channel_order", order, original.order);
+        putIfChanged(changes, "channel_needed_talk_power", neededTalkPower, original.neededTalkPower);
+        putIfChanged(changes, "channel_codec", codec, original.codec);
+        putIfChanged(changes, "channel_codec_quality", codecQuality, original.codecQuality);
+        putIfChanged(changes, "channel_codec_is_unencrypted", !encrypted, !original.encrypted);
+        putIfChanged(changes, "channel_delete_delay", deleteDelay, original.deleteDelay);
+        putIfChanged(changes, "channel_flag_maxclients_unlimited",
+                maxClientsUnlimited, original.maxClientsUnlimited);
+        if (!maxClientsUnlimited) putIfChanged(changes, "channel_maxclients", maxClients, original.maxClients);
+        putIfChanged(changes, "channel_flag_maxfamilyclients_inherited",
+                familyInherited, original.familyInherited);
+        putIfChanged(changes, "channel_flag_maxfamilyclients_unlimited",
+                familyUnlimited, original.familyUnlimited);
+        if (!familyInherited && !familyUnlimited) {
+            putIfChanged(changes, "channel_maxfamilyclients", maxFamilyClients, original.maxFamilyClients);
+        }
+        if (iconId != original.iconId) changes.put("channel_icon_id", Long.toString(iconId));
+        return changes;
+    }
+
+    /**
+     * The {@code channelcreate} parameters for a channel that does not exist yet.
+     *
+     * <p>Everything a fresh channel would get anyway is left out, because TeamSpeak checks
+     * a create permission per property that is present — a client allowed to create plain
+     * channels but not, say, ones with a topic must not send an empty topic. What the
+     * server cannot infer is always sent: the name, the channel type (whose absent flags
+     * would silently mean temporary), the codec, and the client limits when they are not
+     * unlimited.
+     */
+    public Map<String, String> creationParameters() {
+        Map<String, String> params = changesFrom(new ChannelSettings());
+        params.put("channel_name", name);
+        params.put("channel_flag_permanent", flag(type == Type.PERMANENT));
+        params.put("channel_flag_semi_permanent", flag(type == Type.SEMI_PERMANENT));
+        params.put("channel_flag_temporary", flag(type == Type.TEMPORARY));
+        params.put("channel_codec", Integer.toString(codec));
+        params.put("channel_codec_quality", Integer.toString(codecQuality));
+        if (!maxClientsUnlimited) params.put("channel_maxclients", Integer.toString(maxClients));
+        if (!familyInherited && !familyUnlimited) {
+            params.put("channel_maxfamilyclients", Integer.toString(maxFamilyClients));
+        }
+        if (password == null || password.isEmpty()) params.remove("channel_password");
+        return params;
+    }
+
+    private static void putIfChanged(Map<String, String> into, String key, String value, String was) {
+        if (!value.equals(was)) into.put(key, value);
+    }
+
+    private static void putIfChanged(Map<String, String> into, String key, int value, int was) {
+        if (value != was) into.put(key, Integer.toString(value));
+    }
+
+    private static void putIfChanged(Map<String, String> into, String key, boolean value, boolean was) {
+        if (value != was) into.put(key, flag(value));
+    }
+
+    private static String flag(boolean set) {
+        return set ? "1" : "0";
+    }
+
+    private static String strOf(Map<String, String> props, String key) {
+        String v = props.get(key);
+        return v == null ? "" : v;
+    }
+
+    private static boolean boolOf(Map<String, String> props, String key) {
+        return "1".equals(props.get(key));
+    }
+
+    private static int intOf(Map<String, String> props, String key, int fallback) {
+        try {
+            String v = props.get(key);
+            return v == null || v.isEmpty() ? fallback : Integer.parseInt(v.trim());
+        } catch (NumberFormatException e) {
+            return fallback;
+        }
+    }
+
+    private static long longOf(Map<String, String> props, String key) {
+        try {
+            String v = props.get(key);
+            if (v == null || v.isEmpty()) return 0;
+            long id = Long.parseLong(v.trim());
+            return id < 0 ? id & 0xFFFFFFFFL : id;
+        } catch (NumberFormatException e) {
+            return 0;
+        }
+    }
+}

ts3-client/core/src/main/java/com/ts3client/net/ClientEntry.java

@@ -6,6 +6,7 @@ public final class ClientEntry {
     public int channelId;
     public String nickname;
     public String uniqueId = "";
+    public int databaseId;
     public int type;              // 0 = normal voice client, 1 = server-query
     public int talkPower;
 
@@ -39,4 +40,28 @@ public final class ClientEntry {
     public boolean isQuery() {
         return type == 1;
     }
+
+    /** Adds a server group id, if not already present. */
+    public void addServerGroup(int groupId) {
+        for (int id : serverGroupIds) if (id == groupId) return;
+        int[] updated = java.util.Arrays.copyOf(serverGroupIds, serverGroupIds.length + 1);
+        updated[serverGroupIds.length] = groupId;
+        serverGroupIds = updated;
+    }
+
+    /** Removes a server group id, if present. */
+    public void removeServerGroup(int groupId) {
+        int index = -1;
+        for (int i = 0; i < serverGroupIds.length; i++) {
+            if (serverGroupIds[i] == groupId) {
+                index = i;
+                break;
+            }
+        }
+        if (index < 0) return;
+        int[] updated = new int[serverGroupIds.length - 1];
+        System.arraycopy(serverGroupIds, 0, updated, 0, index);
+        System.arraycopy(serverGroupIds, index + 1, updated, index, serverGroupIds.length - index - 1);
+        serverGroupIds = updated;
+    }
 }

ts3-client/core/src/main/java/com/ts3client/net/ConnectionEventHandler.java

@@ -0,0 +1,629 @@
+package com.ts3client.net;
+
+import com.github.manevolent.ts3j.event.*;
+import com.ts3client.sound.SoundEvent;
+import com.ts3client.sound.SoundNotifier;
+
+import java.util.Map;
+
+/**
+ * The {@link TS3Listener} side of a connection: keeps {@link ServerModel} in sync with
+ * incoming notify events, mirrors native TeamSpeak's server-tab log lines, and picks the
+ * matching {@link SoundEvent} for each one. Registered alongside {@link TeamspeakConnection}
+ * itself (which keeps only the lifecycle-critical {@code onDisconnected} callback) so this
+ * class can stay focused on "event arrived, update state and tell the user" and nothing else.
+ */
+final class ConnectionEventHandler implements TS3Listener {
+
+    // ---- who went where: TeamSpeak's reason ids ----
+
+    /** {@code reasonid} of a client view/move notification. */
+    private static final int REASON_SWITCHED = 0;
+    private static final int REASON_MOVED = 1;
+    private static final int REASON_TIMEOUT = 3;
+    private static final int REASON_CHANNEL_KICK = 4;
+    private static final int REASON_SERVER_KICK = 5;
+    private static final int REASON_BAN = 6;
+
+    private final TeamspeakConnection conn;
+
+    ConnectionEventHandler(TeamspeakConnection conn) {
+        this.conn = conn;
+    }
+
+    @Override
+    public void onClientJoin(ClientJoinEvent e) {
+        ClientEntry c = conn.getModel().putClient(e.getClientId(), e.getClientNickname(), e.getClientTargetId());
+        c.type = safeInt(e, "client_type");
+        c.talkPower = e.getClientTalkPower();
+        c.inputMuted = e.isClientInputMuted();
+        c.outputMuted = e.isClientOutputMuted();
+        c.inputHardware = e.isClientUsingHardwareInput();
+        c.outputHardware = e.isClientUsingHardwareOutput();
+        c.away = e.isClientAway();
+        c.awayMessage = TeamspeakConnection.orEmpty(e.get("client_away_message"));
+        c.uniqueId = TeamspeakConnection.orEmpty(e.getUniqueClientIdentifier());
+        c.databaseId = e.getClientDatabaseId();
+        c.serverGroupIds = parseIntList(e.getClientServerGroups());
+        c.channelGroupId = e.getClientChannelGroupId();
+        c.self = (e.getClientId() == conn.getSelfClientId());
+        if (e.getClientId() != conn.getSelfClientId()) {
+            announceClientEntered(e);
+            logClientEntered(e);
+        }
+        conn.ui.onModelChanged();
+    }
+
+    @Override
+    public void onClientLeave(ClientLeaveEvent e) {
+        if (e.getClientId() == conn.getSelfClientId()) {
+            announceOwnRemoval(safeInt(e, "reasonid"), e);
+        } else {
+            String name = conn.clientLink(e.getClientId());
+            announceClientLeft(e);
+            logClientLeft(e, name);
+        }
+        conn.getModel().removeClient(e.getClientId());
+        if (conn.getPlayback() != null) conn.getPlayback().removeClient(e.getClientId());
+        conn.ui.onModelChanged();
+    }
+
+    @Override
+    public void onClientMoved(ClientMovedEvent e) {
+        ClientEntry c = conn.getModel().getClient(e.getClientId());
+        if (c != null) {
+            int from = c.channelId;
+            c.channelId = e.getTargetChannelId();
+            if (e.getClientId() == conn.getSelfClientId()) {
+                announceOwnMove(safeInt(e, "reasonid"), e);
+            } else {
+                announceClientMoved(safeInt(e, "reasonid"), e.getClientId(), from, e.getTargetChannelId());
+                logClientMoved(e, conn.clientLink(c.id), from, e.getTargetChannelId());
+            }
+            conn.ui.onModelChanged();
+        }
+    }
+
+    /** A client became visible to us, logged the way native TS3's server tab does. */
+    private void logClientEntered(ClientJoinEvent e) {
+        String name = conn.clientLink(e.getClientId(),
+                TeamspeakConnection.orEmpty(e.getUniqueClientIdentifier()), e.getClientNickname());
+        switch (safeInt(e, "reasonid")) {
+            case REASON_MOVED:
+                conn.log(name + " appears, coming from channel \"" + conn.channelLink(e.getClientFromId()) + "\"");
+                break;
+            case REASON_CHANNEL_KICK:
+                conn.log(name + " appears, was kicked from channel \"" + conn.channelLink(e.getClientFromId())
+                        + "\" by " + invokerName(e));
+                break;
+            case REASON_SWITCHED:
+                conn.log(name + " switched to channel \"" + conn.channelLink(e.getClientTargetId())
+                        + "\", coming from channel \"" + conn.channelLink(e.getClientFromId()) + "\"");
+                break;
+            default:
+                conn.log(name + " connected to channel \"" + conn.channelLink(e.getClientTargetId()) + "\"");
+        }
+    }
+
+    /** A client stopped being visible to us. */
+    private void logClientLeft(ClientLeaveEvent e, String name) {
+        String reasonMsg = TeamspeakConnection.orEmpty(e.get("reasonmsg"));
+        String suffix = reasonMsg.isEmpty() ? "" : " (" + reasonMsg + ")";
+        switch (safeInt(e, "reasonid")) {
+            case REASON_TIMEOUT:
+                conn.log(name + " dropped (ping timeout)");
+                break;
+            case REASON_SERVER_KICK:
+                conn.log(name + " was kicked from the server by " + invokerName(e) + suffix);
+                break;
+            case REASON_BAN:
+                conn.log(name + " was banned from the server by " + invokerName(e) + suffix);
+                break;
+            case REASON_CHANNEL_KICK:
+                conn.log(name + " left: was kicked to channel \"" + conn.channelLink(e.getClientTargetId())
+                        + "\" by " + invokerName(e) + suffix);
+                break;
+            case REASON_MOVED:
+                conn.log(name + " left, heading to channel \"" + conn.channelLink(e.getClientTargetId()) + "\"");
+                break;
+            case REASON_SWITCHED:
+                conn.log(name + " left, switched to channel \"" + conn.channelLink(e.getClientTargetId()) + "\"");
+                break;
+            default:
+                conn.log(name + " disconnected");
+        }
+    }
+
+    /** A client we can see moved between two channels we can see. */
+    private void logClientMoved(ClientMovedEvent e, String name, int fromChannel, int toChannel) {
+        String reasonMsg = TeamspeakConnection.orEmpty(e.get("reasonmsg"));
+        String suffix = reasonMsg.isEmpty() ? "" : " (" + reasonMsg + ")";
+        switch (safeInt(e, "reasonid")) {
+            case REASON_MOVED:
+                conn.log(name + " was moved from channel \"" + conn.channelLink(fromChannel) + "\" to \""
+                        + conn.channelLink(toChannel) + "\" by " + invokerName(e));
+                break;
+            case REASON_CHANNEL_KICK:
+                conn.log(name + " was kicked from channel \"" + conn.channelLink(fromChannel) + "\" to \""
+                        + conn.channelLink(toChannel) + "\" by " + invokerName(e) + suffix);
+                break;
+            default:
+                conn.log(name + " switched from channel \"" + conn.channelLink(fromChannel) + "\" to \""
+                        + conn.channelLink(toChannel) + "\"");
+        }
+    }
+
+    /**
+     * A client became visible: either they just connected, or they moved in from a
+     * channel we could not see — TeamSpeak's "appears" case.
+     */
+    private void announceClientEntered(ClientJoinEvent e) {
+        if (!conn.isConnected()) return;
+        int clientId = e.getClientId();
+        boolean current = conn.inOwnChannel(e.getClientTargetId());
+        Map<String, String> vars = conn.clientVars(clientId, e.getClientNickname());
+        switch (safeInt(e, "reasonid")) {
+            case REASON_MOVED:
+                conn.sound(current ? SoundEvent.CLIENT_MOVED_TO_CURRENT_CHANNEL_APPEARS
+                        : SoundEvent.CLIENT_MOVED_TO_OTHER_CHANNEL_APPEARS, vars);
+                break;
+            case REASON_CHANNEL_KICK:
+                conn.sound(current ? SoundEvent.CLIENT_WAS_KICKED_FROM_CHANNEL_TO_CURRENT_CHANNEL_APPEARS
+                        : SoundEvent.CLIENT_WAS_KICKED_FROM_CHANNEL_TO_OTHER_CHANNEL_APPEARS, vars);
+                break;
+            case REASON_SWITCHED:
+                conn.sound(current ? SoundEvent.CLIENT_SWITCHED_TO_CURRENT_CHANNEL_APPEARS
+                        : SoundEvent.CLIENT_SWITCHED_TO_OTHER_CHANNEL_APPEARS, vars);
+                break;
+            default:
+                conn.sound(current ? SoundEvent.CLIENT_CONNECTION_CONNECTED_CURRENT_CHANNEL
+                        : SoundEvent.CLIENT_CONNECTION_CONNECTED_SERVER, vars);
+        }
+    }
+
+    /** A client stopped being visible: they left the server, or moved out of sight. */
+    private void announceClientLeft(ClientLeaveEvent e) {
+        if (!conn.isConnected()) return;
+        int clientId = e.getClientId();
+        boolean current = conn.inOwnChannel(e.getClientFromId());
+        Map<String, String> vars = conn.clientVars(clientId, null);
+        switch (safeInt(e, "reasonid")) {
+            case REASON_TIMEOUT:
+                conn.sound(current ? SoundEvent.CLIENT_CONNECTION_LOST_CONNECTION_CURRENT_CHANNEL
+                        : SoundEvent.CLIENT_CONNECTION_LOST_CONNECTION_SERVER, vars);
+                break;
+            case REASON_SERVER_KICK:
+                conn.sound(current ? SoundEvent.CLIENT_WAS_KICKED_FROM_SERVER_CURRENT_CHANNEL
+                        : SoundEvent.CLIENT_WAS_KICKED_FROM_SERVER_SERVER, vars);
+                break;
+            case REASON_BAN:
+                conn.sound(current ? SoundEvent.CLIENT_WAS_BANNED_CURRENT_CHANNEL
+                        : SoundEvent.CLIENT_WAS_BANNED_SERVER, vars);
+                break;
+            case REASON_CHANNEL_KICK:
+                conn.sound(current ? SoundEvent.CLIENT_WAS_KICKED_FROM_CHANNEL_FROM_CURRENT_CHANNEL_DISAPPEARS
+                        : SoundEvent.CLIENT_WAS_KICKED_FROM_CHANNEL_TO_OTHER_CHANNEL_DISAPPEARS, vars);
+                break;
+            case REASON_MOVED:
+                conn.sound(current ? SoundEvent.CLIENT_MOVED_FROM_CURRENT_CHANNEL_DISAPPEARS
+                        : SoundEvent.CLIENT_MOVED_TO_OTHER_CHANNEL_DISAPPEARS, vars);
+                break;
+            case REASON_SWITCHED:
+                conn.sound(current ? SoundEvent.CLIENT_SWITCHED_FROM_CURRENT_CHANNEL_DISAPPEARS
+                        : SoundEvent.CLIENT_SWITCHED_TO_OTHER_CHANNEL_DISAPPEARS, vars);
+                break;
+            default:
+                conn.sound(current ? SoundEvent.CLIENT_CONNECTION_DISCONNECTED_CURRENT_CHANNEL
+                        : SoundEvent.CLIENT_CONNECTION_DISCONNECTED_SERVER, vars);
+        }
+    }
+
+    /** A client we can see moved between two channels we can see ("stays"). */
+    private void announceClientMoved(int reason, int clientId, int fromChannel, int toChannel) {
+        if (!conn.isConnected()) return;
+        boolean toCurrent = conn.inOwnChannel(toChannel);
+        boolean fromCurrent = conn.inOwnChannel(fromChannel);
+        Map<String, String> vars = conn.clientVars(clientId, null);
+        switch (reason) {
+            case REASON_MOVED:
+                conn.sound(toCurrent ? SoundEvent.CLIENT_MOVED_TO_CURRENT_CHANNEL_STAYS
+                        : fromCurrent ? SoundEvent.CLIENT_MOVED_FROM_CURRENT_CHANNEL_STAYS
+                        : SoundEvent.CLIENT_MOVED_TO_OTHER_CHANNEL_STAYS, vars);
+                break;
+            case REASON_CHANNEL_KICK:
+                conn.sound(toCurrent ? SoundEvent.CLIENT_WAS_KICKED_FROM_CHANNEL_TO_CURRENT_CHANNEL_STAYS
+                        : fromCurrent ? SoundEvent.CLIENT_WAS_KICKED_FROM_CHANNEL_FROM_CURRENT_CHANNEL_STAYS
+                        : SoundEvent.CLIENT_WAS_KICKED_FROM_CHANNEL_TO_OTHER_CHANNEL_STAYS, vars);
+                break;
+            default:
+                conn.sound(toCurrent ? SoundEvent.CLIENT_SWITCHED_TO_CURRENT_CHANNEL_STAYS
+                        : fromCurrent ? SoundEvent.CLIENT_SWITCHED_FROM_CURRENT_CHANNEL_STAYS
+                        : SoundEvent.CLIENT_SWITCHED_TO_OTHER_CHANNEL_STAYS, vars);
+        }
+    }
+
+    /** We changed channel ourselves, or somebody changed it for us. */
+    private void announceOwnMove(int reason, ClientMovedEvent e) {
+        if (!conn.isConnected()) return;
+        Map<String, String> vars = conn.channelVars(e.getTargetChannelId(), e.get("invokername"));
+        switch (reason) {
+            case REASON_MOVED:
+                conn.sound(SoundEvent.YOU_WERE_MOVED_TO_DIFFERENT_CHANNEL, vars);
+                break;
+            case REASON_CHANNEL_KICK:
+                conn.sound(SoundEvent.YOU_WERE_KICKED_FROM_CHANNEL, vars);
+                break;
+            default:
+                conn.sound(SoundEvent.YOU_SWITCHED_CHANNEL, vars);
+        }
+    }
+
+    /** We were removed from the server (kick or ban); the disconnect follows. */
+    private void announceOwnRemoval(int reason, ClientLeaveEvent e) {
+        if (!conn.isConnected()) return;
+        Map<String, String> vars = SoundNotifier.vars(
+                "servername", conn.getModel().getServerName(),
+                "clientname", TeamspeakConnection.orEmpty(e.get("invokername")),
+                "reason", TeamspeakConnection.orEmpty(e.get("reasonmsg")));
+        if (reason == REASON_SERVER_KICK) {
+            conn.sound(SoundEvent.YOU_WERE_KICKED_FROM_SERVER, vars);
+        } else if (reason == REASON_BAN) {
+            conn.sound(SoundEvent.YOU_WERE_BANNED, vars);
+        }
+    }
+
+    @Override
+    public void onClientChanged(ClientUpdatedEvent e) {
+        ClientEntry c = conn.getModel().getClient(e.getClientId());
+        if (c == null) return;
+        boolean renamed = has(e, "client_nickname") && !e.get("client_nickname").equals(c.nickname);
+        String oldName = c.nickname;
+        if (renamed) c.nickname = e.get("client_nickname");
+        if (has(e, "client_input_muted")) c.inputMuted = e.getBoolean("client_input_muted");
+        if (has(e, "client_output_muted")) c.outputMuted = e.getBoolean("client_output_muted");
+        if (has(e, "client_input_hardware")) c.inputHardware = e.getBoolean("client_input_hardware");
+        if (has(e, "client_output_hardware")) c.outputHardware = e.getBoolean("client_output_hardware");
+        if (has(e, "client_away")) {
+            c.away = e.getBoolean("client_away");
+            // Both fields travel together, so an absent message here means "no message"
+            // — which `has` cannot tell from "not reported".
+            c.awayMessage = c.away ? TeamspeakConnection.orEmpty(e.get("client_away_message")) : "";
+        } else if (has(e, "client_away_message")) {
+            c.awayMessage = e.get("client_away_message");
+        }
+        if (has(e, "client_talk_power")) c.talkPower = e.getInt("client_talk_power");
+        if (has(e, "client_description")) {
+            c.description = e.get("client_description");
+            conn.ui.onInfoUpdated();
+        }
+        if (has(e, "client_is_channel_commander"))
+            c.channelCommander = e.getBoolean("client_is_channel_commander");
+        announceClientUpdate(e, c, renamed, oldName);
+        conn.ui.onModelChanged();
+    }
+
+    /** Renames, talk-power changes and recording flags all arrive as a client update. */
+    private void announceClientUpdate(ClientUpdatedEvent e, ClientEntry c, boolean renamed, String oldName) {
+        if (!conn.isConnected()) return;
+        boolean self = c.id == conn.getSelfClientId();
+        Map<String, String> vars = conn.clientVars(c.id, null);
+
+        if (renamed) {
+            conn.sound(safeInt(e, "invokerid") == conn.getSelfClientId()
+                    ? SoundEvent.CLIENT_RENAMED_BY_YOU : SoundEvent.CLIENT_RENAMED_BY_OTHER, vars);
+            conn.log(oldName + " is now known as " + conn.clientLink(c.id));
+        }
+        if (safeInt(e, "client_talk_request") > 0 && !self) {
+            conn.sound(SoundEvent.CLIENT_REQUESTED_TALK_POWER, vars);
+        }
+        if (self && has(e, "client_is_talker")) {
+            conn.sound(e.getBoolean("client_is_talker")
+                    ? SoundEvent.YOU_WERE_GRANTED_TALK_POWER : SoundEvent.YOU_WERE_REVOKED_TALK_POWER, vars);
+        }
+        if (!self && has(e, "client_is_recording")) {
+            boolean recording = e.getBoolean("client_is_recording");
+            if (!recording) {
+                conn.sound(SoundEvent.CLIENT_RECORDING_STOP, vars);
+            } else {
+                conn.sound(conn.inOwnChannel(c.channelId)
+                        ? SoundEvent.CLIENT_RECORDING_IN_CHANNEL : SoundEvent.CLIENT_RECORDING_START, vars);
+            }
+        }
+    }
+
+    @Override
+    public void onChannelCreate(ChannelCreateEvent e) {
+        int cid = e.getChannelId();
+        String name = e.get("channel_name");
+        int pid = safeInt(e, "cpid");
+        if (pid == 0) pid = safeInt(e, "pid");
+        int order = safeInt(e, "channel_order");
+        ChannelNode node = conn.getModel().putChannel(cid, name, pid, order);
+        long icon = TeamspeakConnection.safeLong(e, "channel_icon_id");
+        if (icon != 0) node.iconId = icon;
+        conn.getModel().relinkChannel(cid, pid, order);
+        if (conn.isConnected()) {
+            conn.sound(byInvoker(e, SoundEvent.CHANNEL_CREATED_BY_YOU, SoundEvent.CHANNEL_CREATED_BY_OTHER,
+                    SoundEvent.CHANNEL_CREATED_BY_OTHER), conn.channelVars(cid, e.get("invokername")));
+            conn.log("Channel \"" + conn.channelLink(cid) + "\" was created by " + invokerName(e));
+        }
+        conn.ui.onModelChanged();
+    }
+
+    @Override
+    public void onChannelDeleted(ChannelDeletedEvent e) {
+        int cid = e.getChannelId();
+        if (conn.isConnected()) {
+            conn.sound(byInvoker(e, SoundEvent.CHANNEL_DELETED_BY_YOU, SoundEvent.CHANNEL_DELETED_BY_OTHER,
+                    SoundEvent.CHANNEL_DELETED_BY_SERVER), conn.channelVars(cid, e.get("invokername")));
+            conn.log("Channel \"" + conn.channelName(cid) + "\" was deleted by " + invokerName(e));
+        }
+        conn.getModel().removeChannel(cid);
+        conn.ui.onModelChanged();
+    }
+
+    @Override
+    public void onChannelEdit(ChannelEditedEvent e) {
+        ChannelNode ch = conn.getModel().getChannel(safeInt(e, "cid"));
+        if (ch != null) {
+            if (has(e, "channel_name")) ch.name = e.get("channel_name");
+            if (has(e, "channel_order")) ch.order = e.getInt("channel_order");
+            if (has(e, "channel_icon_id")) ch.iconId = TeamspeakConnection.safeLong(e, "channel_icon_id");
+            if (has(e, "channel_topic")) ch.topic = e.get("channel_topic");
+            if (conn.isConnected()) {
+                boolean current = conn.inOwnChannel(ch.id);
+                conn.sound(current
+                        ? byInvoker(e, SoundEvent.CHANNEL_EDITED_CURRENT_BY_YOU,
+                        SoundEvent.CHANNEL_EDITED_CURRENT_BY_OTHER, SoundEvent.CHANNEL_EDITED_CURRENT_BY_OTHER)
+                        : byInvoker(e, SoundEvent.CHANNEL_EDITED_OTHER_BY_YOU,
+                        SoundEvent.CHANNEL_EDITED_OTHER_BY_OTHER, SoundEvent.CHANNEL_EDITED_OTHER_BY_SERVER),
+                        conn.channelVars(ch.id, e.get("invokername")));
+                conn.log("Channel \"" + conn.channelLink(ch.id) + "\" was edited by " + invokerName(e));
+            }
+            conn.ui.onModelChanged();
+        }
+    }
+
+    /**
+     * Descriptions never travel with the notify, so a cached one has to be re-fetched.
+     * Only channels whose description was already loaded are refreshed; the rest pick the
+     * new text up the first time they are looked at.
+     */
+    @Override
+    public void onChannelDescriptionChanged(ChannelDescriptionEditedEvent e) {
+        ChannelNode ch = conn.getModel().getChannel(safeInt(e, "cid"));
+        if (ch == null || !ch.descriptionLoaded) return;
+        ch.descriptionLoaded = false;
+        conn.requestChannelInfo(ch.id);
+    }
+
+    @Override
+    public void onChannelMoved(ChannelMovedEvent e) {
+        ChannelNode ch = conn.getModel().getChannel(safeInt(e, "cid"));
+        if (ch != null) {
+            int parent = has(e, "cpid") ? e.getInt("cpid") : ch.parentId;
+            int order = has(e, "order") ? e.getInt("order") : ch.order;
+            conn.getModel().relinkChannel(ch.id, parent, order);
+            if (conn.isConnected()) {
+                conn.sound(byInvoker(e, SoundEvent.CHANNEL_MOVED_BY_YOU, SoundEvent.CHANNEL_MOVED_BY_OTHER,
+                        SoundEvent.CHANNEL_MOVED_BY_OTHER), conn.channelVars(ch.id, e.get("invokername")));
+                conn.log("Channel \"" + conn.channelLink(ch.id) + "\" was moved by " + invokerName(e));
+            }
+            conn.ui.onModelChanged();
+        }
+    }
+
+    @Override
+    public void onChannelSubscribed(ChannelSubscribedEvent e) {
+        setSubscribed(safeInt(e, "cid"), true);
+    }
+
+    @Override
+    public void onChannelUnsubscribed(ChannelUnsubscribedEvent e) {
+        setSubscribed(safeInt(e, "cid"), false);
+    }
+
+    private void setSubscribed(int cid, boolean subscribed) {
+        ChannelNode ch = conn.getModel().getChannel(cid);
+        if (ch == null || ch.subscribed == subscribed) return;
+        ch.subscribed = subscribed;
+        conn.ui.onModelChanged();
+    }
+
+    @Override
+    public void onServerEdit(ServerEditedEvent e) {
+        if (has(e, "virtualserver_name")) conn.getModel().setServerName(e.get("virtualserver_name"));
+        if (conn.isConnected()) {
+            conn.sound(byInvoker(e, SoundEvent.SERVER_EDITED_BY_YOU, SoundEvent.SERVER_EDITED_BY_OTHER,
+                    SoundEvent.SERVER_EDITED_BY_OTHER), conn.serverVars());
+        }
+        conn.ui.onModelChanged();
+    }
+
+    @Override
+    public void onServerGroupClientAdded(ServerGroupClientAddedEvent e) {
+        ClientEntry c = conn.getModel().getClient(e.getClientId());
+        if (c != null) c.addServerGroup(e.getServerGroupId());
+        boolean self = e.getClientId() == conn.getSelfClientId();
+        conn.sound(self
+                ? byInvoker(e, SoundEvent.YOU_SERVERGROUP_ADDED_BY_USER, SoundEvent.YOU_SERVERGROUP_ADDED_BY_USER,
+                SoundEvent.YOU_SERVERGROUP_ADDED_BY_SERVER)
+                : byInvoker(e, SoundEvent.CLIENT_SERVERGROUP_ADDED_BY_USER,
+                SoundEvent.CLIENT_SERVERGROUP_ADDED_BY_USER, SoundEvent.CLIENT_SERVERGROUP_ADDED_BY_SERVER),
+                groupVars(e.getClientId(), e.getName()));
+        conn.log(clientLogName(e.getClientId()) + " was added to server group \"" + e.getName()
+                + "\" by " + invokerName(e) + ".");
+        conn.ui.onModelChanged();
+    }
+
+    @Override
+    public void onServerGroupClientDeleted(ServerGroupClientDeletedEvent e) {
+        int clientId = safeInt(e, "clid");
+        ClientEntry c = conn.getModel().getClient(clientId);
+        if (c != null) c.removeServerGroup(e.getServerGroupId());
+        boolean self = clientId == conn.getSelfClientId();
+        conn.sound(self
+                ? byInvoker(e, SoundEvent.YOU_SERVERGROUP_REMOVED_BY_USER,
+                SoundEvent.YOU_SERVERGROUP_REMOVED_BY_USER, SoundEvent.YOU_SERVERGROUP_REMOVED_BY_SERVER)
+                : byInvoker(e, SoundEvent.CLIENT_SERVERGROUP_REMOVED_BY_USER,
+                SoundEvent.CLIENT_SERVERGROUP_REMOVED_BY_USER, SoundEvent.CLIENT_SERVERGROUP_REMOVED_BY_SERVER),
+                groupVars(clientId, e.get("name")));
+        conn.log(clientLogName(clientId) + " was removed from server group \"" + TeamspeakConnection.orEmpty(e.get("name"))
+                + "\" by " + invokerName(e) + ".");
+        conn.ui.onModelChanged();
+    }
+
+    @Override
+    public void onClientChannelGroupChanged(ClientChannelGroupChangedEvent e) {
+        ClientEntry c = conn.getModel().getClient(e.getClientId());
+        if (c != null) c.channelGroupId = e.getChannelGroupId();
+        boolean self = e.getClientId() == conn.getSelfClientId();
+        String groupName = conn.getModel().channelGroupName(e.getChannelGroupId());
+        conn.sound(self
+                ? byInvoker(e, SoundEvent.YOU_CHANNELGROUP_CHANGED_BY_USER,
+                SoundEvent.YOU_CHANNELGROUP_CHANGED_BY_USER, SoundEvent.YOU_CHANNELGROUP_CHANGED_BY_SERVER)
+                : byInvoker(e, SoundEvent.CLIENT_CHANNELGROUP_CHANGED_BY_USER,
+                SoundEvent.CLIENT_CHANNELGROUP_CHANGED_BY_USER, SoundEvent.CLIENT_CHANNELGROUP_CHANGED_BY_SERVER),
+                groupVars(e.getClientId(), groupName));
+        conn.log("Channel group \"" + TeamspeakConnection.orEmpty(groupName) + "\" was assigned to "
+                + clientLogName(e.getClientId()) + " by " + invokerName(e) + ".");
+        conn.ui.onModelChanged();
+    }
+
+    /** A client's name for a log line, as a link, falling back to its id once it has left. */
+    private String clientLogName(int clientId) {
+        return conn.clientLink(clientId);
+    }
+
+    /** Picks the event variant matching who caused the change: us, another client, or the server. */
+    private SoundEvent byInvoker(BaseEvent e, SoundEvent byYou, SoundEvent byOther, SoundEvent byServer) {
+        int invoker = safeInt(e, "invokerid");
+        if (invoker == conn.getSelfClientId() && invoker != 0) return byYou;
+        return invoker == 0 ? byServer : byOther;
+    }
+
+    private Map<String, String> groupVars(int clientId, String groupName) {
+        Map<String, String> vars = conn.clientVars(clientId, null);
+        vars.put("groupname", TeamspeakConnection.orEmpty(groupName));
+        return vars;
+    }
+
+    @Override
+    public void onChannelList(ChannelListEvent e) {
+        // Incremental channel arriving during connect.
+        int cid = e.getChannelId();
+        String name = e.get("channel_name");
+        int pid = safeInt(e, "cpid");
+        int order = safeInt(e, "channel_order");
+        ChannelNode node = conn.getModel().putChannel(cid, name, pid, order);
+        long icon = TeamspeakConnection.safeLong(e, "channel_icon_id");
+        if (icon != 0) node.iconId = icon;
+    }
+
+    @Override
+    public void onServerGroupList(ServerGroupListEvent e) {
+        int id = safeInt(e, "sgid");
+        if (id > 0) conn.getModel().putServerGroup(toGroup(e, id));
+    }
+
+    @Override
+    public void onChannelGroupList(ChannelGroupListEvent e) {
+        int id = safeInt(e, "cgid");
+        if (id > 0) conn.getModel().putChannelGroup(toGroup(e, id));
+    }
+
+    private static Group toGroup(BaseEvent e, int id) {
+        return new Group(id, e.get("name"), TeamspeakConnection.safeLong(e, "iconid"), safeInt(e, "sortid"),
+                safeInt(e, "type"), safeInt(e, "n_member_addp"), safeInt(e, "n_member_removep"));
+    }
+
+    @Override
+    public void onPermissionList(PermissionListEvent e) {
+        conn.getModel().putPermissionName(e.get("permname"));
+    }
+
+    @Override
+    public void onClientNeededPermissions(ClientNeededPermissionsEvent e) {
+        conn.getModel().putSelfPermissionValue(safeInt(e, "permid"), safeInt(e, "permvalue"));
+    }
+
+    @Override
+    public void onTextMessage(TextMessageEvent e) {
+        if (e.getInvokerId() == conn.getSelfClientId()) return; // don't echo our own
+        ConnectionListener.ChatScope scope;
+        SoundEvent notification;
+        switch (e.getTargetMode()) {
+            case CLIENT:
+                scope = ConnectionListener.ChatScope.PRIVATE;
+                notification = SoundEvent.CHAT_RECEIVED_MESSAGE_CLIENT;
+                break;
+            case CHANNEL:
+                scope = ConnectionListener.ChatScope.CHANNEL;
+                notification = SoundEvent.CHAT_RECEIVED_MESSAGE_CHANNEL;
+                break;
+            default:
+                scope = ConnectionListener.ChatScope.SERVER;
+                notification = SoundEvent.CHAT_RECEIVED_MESSAGE_SERVER;
+                break;
+        }
+        conn.sound(notification, conn.clientVars(e.getInvokerId(), e.getInvokerName()));
+        conn.ui.onChat(scope, e.getInvokerId(), e.getInvokerName(), e.getMessage());
+    }
+
+    @Override
+    public void onClientPoke(ClientPokeEvent e) {
+        conn.sound(SoundEvent.OTHER_RECEIVED_POKE, conn.clientVars(e.getInvokerId(), e.getInvokerName()));
+        conn.ui.onPoke(TeamspeakConnection.orEmpty(e.getInvokerName()), TeamspeakConnection.orEmpty(e.get("msg")));
+    }
+
+    @Override
+    public void onUnknownEvent(UnknownTeamspeakEvent e) {
+        if ("notifyconnectioninfo".equals(e.getCommand())) conn.stats.onReport(e);
+        else if ("notifychannelpermlist".equals(e.getCommand())) conn.channels.onPermListEntry(e);
+    }
+
+    // ---- helpers ----
+
+    /** Who caused an event, linked where the server named them; "the server" when nobody did. */
+    private String invokerName(BaseEvent e) {
+        String name = TeamspeakConnection.orEmpty(e.get("invokername"));
+        if (name.isEmpty()) return "the server";
+        return conn.clientLink(safeInt(e, "invokerid"),
+                TeamspeakConnection.orEmpty(e.get("invokeruid")), name);
+    }
+
+    private static int safeInt(BaseEvent e, String key) {
+        try {
+            String v = e.get(key);
+            return v == null ? 0 : Integer.parseInt(v.trim());
+        } catch (Exception ex) {
+            return 0;
+        }
+    }
+
+    /**
+     * Whether the event actually carries a field. ts3j answers a missing key with an
+     * empty string rather than null, so a plain null check is always true — and a
+     * partial update (say, someone muting) would otherwise look like it reported
+     * every other field as well.
+     */
+    private static boolean has(BaseEvent e, String key) {
+        String value = e.get(key);
+        return value != null && !value.isEmpty();
+    }
+
+    /** Parses a comma-separated id list (e.g. server groups "6,12,15"). */
+    private static int[] parseIntList(String csv) {
+        if (csv == null || csv.isEmpty()) return new int[0];
+        String[] parts = csv.split(",");
+        int[] out = new int[parts.length];
+        int n = 0;
+        for (String p : parts) {
+            try {
+                out[n++] = Integer.parseInt(p.trim());
+            } catch (NumberFormatException ignored) {
+            }
+        }
+        return n == parts.length ? out : java.util.Arrays.copyOf(out, n);
+    }
+}

ts3-client/core/src/main/java/com/ts3client/net/ConnectionListener.java

@@ -33,4 +33,11 @@ public interface ConnectionListener {
 
     /** Someone poked the local client. */
     void onPoke(String fromName, String message);
+
+    /**
+     * Something happened on the server that native TS3 records in the server
+     * log: a client connecting/disconnecting/moving, a channel being edited,
+     * a group being (un)assigned, and so on.
+     */
+    void onServerLog(String message);
 }

ts3-client/core/src/main/java/com/ts3client/net/ConnectionStatsCollector.java

@@ -0,0 +1,300 @@
+package com.ts3client.net;
+
+import com.github.manevolent.ts3j.api.Client;
+import com.github.manevolent.ts3j.command.SingleCommand;
+import com.github.manevolent.ts3j.command.parameter.CommandSingleParameter;
+import com.github.manevolent.ts3j.event.UnknownTeamspeakEvent;
+import com.github.manevolent.ts3j.protocol.PacketKind;
+import com.github.manevolent.ts3j.protocol.ProtocolRole;
+import com.github.manevolent.ts3j.protocol.packet.statistics.PacketStatistics;
+import com.github.manevolent.ts3j.protocol.socket.client.LocalTeamspeakClientSocket;
+import com.github.manevolent.ts3j.util.Pair;
+
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.function.Consumer;
+
+/**
+ * Builds {@link ConnectionStats} snapshots for the info dialog. The local client's own
+ * figures are read straight from its live packet counters; a remote client's come from
+ * {@code getconnectioninfo}, whose {@code notifyconnectioninfo} report arrives
+ * asynchronously via {@link #onReport} and is matched back up by client id.
+ */
+final class ConnectionStatsCollector {
+
+    private final TeamspeakConnection conn;
+
+    /** Outstanding {@code getconnectioninfo} requests awaiting a server report, keyed by client id. */
+    private final Map<Integer, PendingConnInfo> pending = new ConcurrentHashMap<>();
+
+    ConnectionStatsCollector(TeamspeakConnection conn) {
+        this.conn = conn;
+    }
+
+    /** Drops any requests left over from a connection that just went away. */
+    void clear() {
+        pending.clear();
+    }
+
+    /**
+     * Fetches connection statistics for a client and delivers them to
+     * {@code callback} (invoked off the Swing EDT — the callback is responsible
+     * for marshalling). May be called repeatedly to poll.
+     */
+    void request(int clientId, Consumer<ConnectionStats> callback) {
+        if (clientId == conn.getSelfClientId()) {
+            new Thread(() -> callback.accept(buildLocalStats()), "ts3j-conninfo-self").start();
+        } else {
+            new Thread(() -> requestRemote(clientId, callback), "ts3j-conninfo").start();
+        }
+    }
+
+    /** Matches an asynchronously arriving {@code notifyconnectioninfo} report to its request. */
+    void onReport(UnknownTeamspeakEvent e) {
+        int clid = safeInt(e.get("clid"));
+        PendingConnInfo p = pending.remove(clid);
+        if (p == null) return;
+        applyConnectionFields(p.stats, e.getMap());
+        p.callback.accept(p.stats);
+    }
+
+    /** Builds a live snapshot of the local client's connection from its own counters. */
+    private ConnectionStats buildLocalStats() {
+        ConnectionStats s = new ConnectionStats();
+        s.clientId = conn.getSelfClientId();
+        s.self = true;
+        s.live = true;
+        s.packetLoss = 0; // the local client has no server->client loss figure
+
+        ClientEntry self = conn.getModel().getClient(conn.getSelfClientId());
+        if (self != null) {
+            s.nickname = self.nickname;
+            s.version = self.version;
+            s.platform = self.platform;
+            s.idleTimeMs = self.idleTimeMs;
+        }
+        long connectedAt = conn.connectedAtMs;
+        if (connectedAt > 0) s.connectedTimeMs = System.currentTimeMillis() - connectedAt;
+
+        LocalTeamspeakClientSocket c = conn.client;
+        if (c == null) return s;
+
+        try {
+            Pair<Double, Double> ping = c.getPing();
+            s.pingMs = ping.getKey() * 1000.0;
+            s.pingDeviationMs = ping.getValue() * 1000.0;
+        } catch (Exception ignored) {
+            // ping unavailable; leave as unknown
+        }
+
+        long pSent = 0, pRecv = 0, bSent = 0, bRecv = 0;
+        long bwSs = 0, bwRs = 0, bwSm = 0, bwRm = 0;
+        for (PacketKind kind : PacketKind.values()) {
+            PacketStatistics st = c.getStatistics(kind);
+            ConnectionStats.KindStats ks = new ConnectionStats.KindStats(mapKind(kind));
+            ks.packetLoss = 0; // the local client cannot measure its own server->client loss
+            ks.packetsSent = st.getSentPackets();
+            ks.packetsReceived = st.getReceivedPackets();
+            ks.bytesSent = st.getSentBytes();
+            ks.bytesReceived = st.getReceivedBytes();
+            ks.bandwidthSentLastSecond = st.getSentBytesLastSecond();
+            ks.bandwidthReceivedLastSecond = st.getReceivedBytesLastSecond();
+            ks.bandwidthSentLastMinute = st.getSentBytesLastMinute();
+            ks.bandwidthReceivedLastMinute = st.getReceivedBytesLastMinute();
+            s.perKind.add(ks);
+
+            pSent += ks.packetsSent;
+            pRecv += ks.packetsReceived;
+            bSent += ks.bytesSent;
+            bRecv += ks.bytesReceived;
+            bwSs += ks.bandwidthSentLastSecond;
+            bwRs += ks.bandwidthReceivedLastSecond;
+            bwSm += ks.bandwidthSentLastMinute;
+            bwRm += ks.bandwidthReceivedLastMinute;
+        }
+        s.packetsSentTotal = pSent;
+        s.packetsReceivedTotal = pRecv;
+        s.bytesSentTotal = bSent;
+        s.bytesReceivedTotal = bRecv;
+        s.bandwidthSentLastSecond = bwSs;
+        s.bandwidthReceivedLastSecond = bwRs;
+        s.bandwidthSentLastMinute = bwSm;
+        s.bandwidthReceivedLastMinute = bwRm;
+        return s;
+    }
+
+    /**
+     * Requests a remote client's connection info. First loads {@code clientinfo}
+     * for the stable fields, then issues {@code getconnectioninfo} whose
+     * {@code notifyconnectioninfo} report arrives asynchronously via
+     * {@link #onReport}. If the report does not arrive shortly (e.g. the
+     * server withholds it), the clientinfo-only snapshot is delivered instead.
+     */
+    private void requestRemote(int clientId, Consumer<ConnectionStats> callback) {
+        ConnectionStats s = new ConnectionStats();
+        s.clientId = clientId;
+        ClientEntry entry = conn.getModel().getClient(clientId);
+        if (entry != null) s.nickname = entry.nickname;
+
+        LocalTeamspeakClientSocket client = conn.client;
+        try {
+            Client c = client.getClientInfo(clientId);
+            if (c != null) {
+                s.version = TeamspeakConnection.orEmpty(c.getVersion());
+                s.platform = TeamspeakConnection.orEmpty(c.getPlatform());
+                s.ip = TeamspeakConnection.orEmpty(c.getIp());
+                s.idleTimeMs = c.getIdleTime();
+                if (entry == null) s.nickname = TeamspeakConnection.orEmpty(c.getNickname());
+                applyConnectionFields(s, c.getMap());
+            }
+        } catch (Exception ignored) {
+            // clientinfo may be permission-restricted; continue with what we have
+        }
+
+        PendingConnInfo p = new PendingConnInfo(callback, s);
+        pending.put(clientId, p);
+
+        boolean sent = false;
+        try {
+            SingleCommand cmd = new SingleCommand("getconnectioninfo", ProtocolRole.CLIENT,
+                    new CommandSingleParameter("clid", Integer.toString(clientId)));
+            client.executeCommand(cmd).complete();
+            sent = true;
+        } catch (Exception ignored) {
+            // command failed; fall back to the clientinfo snapshot below
+        }
+
+        if (sent) {
+            try {
+                Thread.sleep(700); // give notifyconnectioninfo a chance to arrive
+            } catch (InterruptedException ignored) {
+                Thread.currentThread().interrupt();
+            }
+        }
+        // If the report already arrived, onReport removed and delivered it.
+        if (pending.remove(clientId, p)) {
+            callback.accept(s);
+        }
+    }
+
+    /** Parses TeamSpeak {@code connection_*} fields from a command map into {@code s}. */
+    private static void applyConnectionFields(ConnectionStats s, Map<String, String> m) {
+        double ping = parseDouble(m.get("connection_ping"));
+        if (ping >= 0) s.pingMs = ping;
+        double dev = parseDouble(m.get("connection_ping_deviation"));
+        if (dev >= 0) s.pingDeviationMs = dev;
+        double loss = parseDouble(m.get("connection_packetloss_total"));
+        if (loss < 0) loss = parseDouble(m.get("connection_server2client_packetloss_total"));
+        if (loss >= 0) s.packetLoss = loss;
+
+        long connected = parseLong(m.get("connection_connected_time"));
+        if (connected >= 0) s.connectedTimeMs = connected;
+        String ip = m.get("connection_client_ip");
+        if (ip != null && !ip.isEmpty()) s.ip = ip;
+
+        s.packetsSentTotal = pick(s.packetsSentTotal, m.get("connection_packets_sent_total"));
+        s.packetsReceivedTotal = pick(s.packetsReceivedTotal, m.get("connection_packets_received_total"));
+        s.bytesSentTotal = pick(s.bytesSentTotal, m.get("connection_bytes_sent_total"));
+        s.bytesReceivedTotal = pick(s.bytesReceivedTotal, m.get("connection_bytes_received_total"));
+        s.bandwidthSentLastSecond =
+                pick(s.bandwidthSentLastSecond, m.get("connection_bandwidth_sent_last_second_total"));
+        s.bandwidthReceivedLastSecond =
+                pick(s.bandwidthReceivedLastSecond, m.get("connection_bandwidth_received_last_second_total"));
+        s.bandwidthSentLastMinute =
+                pick(s.bandwidthSentLastMinute, m.get("connection_bandwidth_sent_last_minute_total"));
+        s.bandwidthReceivedLastMinute =
+                pick(s.bandwidthReceivedLastMinute, m.get("connection_bandwidth_received_last_minute_total"));
+        s.filetransferBandwidthSent =
+                pick(s.filetransferBandwidthSent, m.get("connection_filetransfer_bandwidth_sent"));
+        s.filetransferBandwidthReceived =
+                pick(s.filetransferBandwidthReceived, m.get("connection_filetransfer_bandwidth_received"));
+
+        applyPerKindFields(s, m);
+    }
+
+    /**
+     * Parses the per-category {@code connection_*_<kind>} fields (as sent in a
+     * {@code notifyconnectioninfo} report) into {@code s}, merging into any
+     * existing rows. Categories absent from the map are left untouched.
+     */
+    private static void applyPerKindFields(ConnectionStats s, Map<String, String> m) {
+        for (ConnectionStats.Kind kind : ConnectionStats.Kind.values()) {
+            String suffix = kind.name().toLowerCase(java.util.Locale.ROOT); // keepalive/control/speech
+            String probe = m.get("connection_packets_sent_" + suffix);
+            String probe2 = m.get("connection_server2client_packetloss_" + suffix);
+            if (probe == null && probe2 == null) continue; // this category not reported
+
+            ConnectionStats.KindStats ks = s.getOrCreateKind(kind);
+            ks.packetsSent = pick(ks.packetsSent, m.get("connection_packets_sent_" + suffix));
+            ks.packetsReceived = pick(ks.packetsReceived, m.get("connection_packets_received_" + suffix));
+            ks.bytesSent = pick(ks.bytesSent, m.get("connection_bytes_sent_" + suffix));
+            ks.bytesReceived = pick(ks.bytesReceived, m.get("connection_bytes_received_" + suffix));
+            ks.bandwidthSentLastSecond =
+                    pick(ks.bandwidthSentLastSecond, m.get("connection_bandwidth_sent_last_second_" + suffix));
+            ks.bandwidthReceivedLastSecond =
+                    pick(ks.bandwidthReceivedLastSecond, m.get("connection_bandwidth_received_last_second_" + suffix));
+            ks.bandwidthSentLastMinute =
+                    pick(ks.bandwidthSentLastMinute, m.get("connection_bandwidth_sent_last_minute_" + suffix));
+            ks.bandwidthReceivedLastMinute =
+                    pick(ks.bandwidthReceivedLastMinute, m.get("connection_bandwidth_received_last_minute_" + suffix));
+            double kloss = parseDouble(m.get("connection_server2client_packetloss_" + suffix));
+            if (kloss >= 0) ks.packetLoss = kloss;
+        }
+    }
+
+    private static long pick(long current, String value) {
+        long v = parseLong(value);
+        return v >= 0 ? v : current;
+    }
+
+    private static ConnectionStats.Kind mapKind(PacketKind kind) {
+        switch (kind) {
+            case KEEPALIVE:
+                return ConnectionStats.Kind.KEEPALIVE;
+            case SPEECH:
+                return ConnectionStats.Kind.SPEECH;
+            default:
+                return ConnectionStats.Kind.CONTROL;
+        }
+    }
+
+    /** Parses a long, returning -1 for null/blank/non-numeric input. */
+    private static long parseLong(String s) {
+        if (s == null || s.isEmpty()) return -1;
+        try {
+            return Long.parseLong(s.trim());
+        } catch (NumberFormatException e) {
+            return -1;
+        }
+    }
+
+    /** Parses a double, returning -1 for null/blank/non-numeric input. */
+    private static double parseDouble(String s) {
+        if (s == null || s.isEmpty()) return -1;
+        try {
+            return Double.parseDouble(s.trim());
+        } catch (NumberFormatException e) {
+            return -1;
+        }
+    }
+
+    /** @return the parsed value, or 0 when it is absent or not a number */
+    private static int safeInt(String value) {
+        try {
+            return value == null ? 0 : Integer.parseInt(value.trim());
+        } catch (NumberFormatException ex) {
+            return 0;
+        }
+    }
+
+    /** Callback + accumulating snapshot for an in-flight {@code getconnectioninfo}. */
+    private static final class PendingConnInfo {
+        final Consumer<ConnectionStats> callback;
+        final ConnectionStats stats;
+
+        PendingConnInfo(Consumer<ConnectionStats> callback, ConnectionStats stats) {
+            this.callback = callback;
+            this.stats = stats;
+        }
+    }
+}

ts3-client/core/src/main/java/com/ts3client/net/Group.java

@@ -9,11 +9,26 @@ public final class Group {
     public final long iconId;
     /** Display order among groups; lower comes first. */
     public final int sortId;
+    /** TS3 group type: 0 = template, 1 = regular, 2 = query (server groups only). */
+    public final int type;
+    /** Power needed to add a member to this group. */
+    public final int neededMemberAddPower;
+    /** Power needed to remove a member from this group. */
+    public final int neededMemberRemovePower;
 
-    public Group(int id, String name, long iconId, int sortId) {
+    public Group(int id, String name, long iconId, int sortId, int type,
+                 int neededMemberAddPower, int neededMemberRemovePower) {
         this.id = id;
         this.name = name;
         this.iconId = iconId;
         this.sortId = sortId;
+        this.type = type;
+        this.neededMemberAddPower = neededMemberAddPower;
+        this.neededMemberRemovePower = neededMemberRemovePower;
+    }
+
+    /** Regular, user-assignable groups exclude templates and query-only groups. */
+    public boolean isRegular() {
+        return type == 1;
     }
 }

ts3-client/core/src/main/java/com/ts3client/net/IconRepository.java

@@ -6,6 +6,7 @@ import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
 import java.nio.file.Files;
+import java.util.List;
 import java.util.Map;
 import java.util.Set;
 import java.util.concurrent.ConcurrentHashMap;
@@ -29,6 +30,12 @@ public final class IconRepository {
     /** Icons at or below this id are bundled defaults rather than server uploads. */
     public static final int MAX_BUNDLED_ID = 1000;
 
+    /**
+     * The default group icons shipped with the client, in the order TeamSpeak's own icon
+     * packs list them. These are what the icon chooser offers as "local" icons.
+     */
+    public static final List<Long> BUNDLED_IDS = List.of(100L, 200L, 300L, 500L, 600L);
+
     /** Downloads {@code /icon_<id>} from the connected server's file repository. */
     public interface Fetcher {
         byte[] fetchIcon(long iconId) throws Exception;

ts3-client/core/src/main/java/com/ts3client/net/ServerModel.java

@@ -18,13 +18,29 @@ public final class ServerModel {
     private final Map<Integer, ClientEntry> clients = new LinkedHashMap<>();
     private final Map<Integer, Group> serverGroups = new LinkedHashMap<>();
     private final Map<Integer, Group> channelGroups = new LinkedHashMap<>();
+    /**
+     * Permission id -> name, learned from the server's {@code permissionlist} response.
+     * Entries carry no id of their own: TS3 numbers them by position in the response,
+     * and the empty "group_id_end" separator records marking category boundaries don't
+     * count toward that position, so only {@link #putPermissionName} advances it.
+     */
+    private final Map<Integer, String> permissionNames = new LinkedHashMap<>();
+    private int nextPermissionId;
+    /** Permission id -> the local client's resolved value, from {@code notifyclientneededpermissions}. */
+    private final Map<Integer, Integer> selfPermissionValues = new LinkedHashMap<>();
     private String serverName = "TeamSpeak Server";
+    /** The channel group everyone starts in, e.g. "Guest" — not worth offering to (re)assign. */
+    private int defaultChannelGroupId;
 
     public synchronized void clear() {
         channels.clear();
         clients.clear();
         serverGroups.clear();
         channelGroups.clear();
+        permissionNames.clear();
+        nextPermissionId = 0;
+        selfPermissionValues.clear();
+        defaultChannelGroupId = 0;
     }
 
     // ---- groups ----
@@ -78,6 +94,64 @@ public final class ServerModel {
         return g == null ? null : g.name;
     }
 
+    /** Regular (non-template, non-query) server groups, ordered for display. */
+    public synchronized List<Group> allServerGroups() {
+        return regularGroups(serverGroups);
+    }
+
+    /** Regular (non-template, non-query) channel groups, ordered for display. */
+    public synchronized List<Group> allChannelGroups() {
+        return regularGroups(channelGroups);
+    }
+
+    private static List<Group> regularGroups(Map<Integer, Group> groups) {
+        List<Group> list = new ArrayList<>();
+        for (Group g : groups.values()) {
+            if (g.isRegular()) list.add(g);
+        }
+        list.sort(Comparator.comparingInt((Group g) -> g.sortId).thenComparingInt(g -> g.id));
+        return list;
+    }
+
+    // ---- permissions ----
+
+    /** Records the next named entry of a {@code permissionlist} response; ignores separators. */
+    public synchronized void putPermissionName(String name) {
+        if (name == null || name.isEmpty()) return;
+        permissionNames.put(nextPermissionId, name);
+        nextPermissionId++;
+    }
+
+    public synchronized void putSelfPermissionValue(int permId, int value) {
+        selfPermissionValues.put(permId, value);
+    }
+
+    /**
+     * The local client's resolved value for a named permission (e.g.
+     * {@code "i_group_needed_member_add_power"}), or {@code 0} if it isn't known
+     * yet (the {@code permissionlist} request is still in flight, or the server
+     * never reported a non-default value for it).
+     */
+    /** Whether the server's {@code permissionlist} has arrived, so ids can be named at all. */
+    public synchronized boolean hasPermissionNames() {
+        return !permissionNames.isEmpty();
+    }
+
+    /** The name the server gave permission id {@code id}, or {@code null} if unknown. */
+    public synchronized String permissionName(int id) {
+        return permissionNames.get(id);
+    }
+
+    public synchronized int selfPermissionValue(String name) {
+        for (Map.Entry<Integer, String> entry : permissionNames.entrySet()) {
+            if (entry.getValue().equals(name)) {
+                Integer value = selfPermissionValues.get(entry.getKey());
+                if (value != null) return value;
+            }
+        }
+        return 0;
+    }
+
     public synchronized String getServerName() {
         return serverName;
     }
@@ -86,6 +160,14 @@ public final class ServerModel {
         if (name != null && !name.isEmpty()) this.serverName = name;
     }
 
+    public synchronized int defaultChannelGroupId() {
+        return defaultChannelGroupId;
+    }
+
+    public synchronized void setDefaultChannelGroupId(int id) {
+        this.defaultChannelGroupId = id;
+    }
+
     // ---- channels ----
 
     public synchronized ChannelNode putChannel(int id, String name, int parentId, int order) {
@@ -129,6 +211,41 @@ public final class ServerModel {
         c.order = newOrder;
     }
 
+    /**
+     * The channels sharing a parent with {@code channelId}, in the order they appear in the
+     * tree and excluding the channel itself — what the editor offers as places to sort after.
+     */
+    public synchronized List<ChannelNode> siblingsOf(int channelId) {
+        ChannelNode channel = channels.get(channelId);
+        if (channel == null) return new ArrayList<>();
+        // Ordered with the channel still in place: the order links form a chain, and
+        // pulling a link out of it first would strand everything below.
+        List<ChannelNode> siblings = childrenOf(channel.parentId);
+        siblings.remove(channel);
+        return siblings;
+    }
+
+    /**
+     * The channels directly below {@code parentId} (0 being the top level), in the order
+     * they appear in the tree — what a new channel can be sorted after.
+     */
+    public synchronized List<ChannelNode> childrenOf(int parentId) {
+        List<ChannelNode> children = new ArrayList<>();
+        for (ChannelNode c : channels.values()) {
+            if (c.parentId == parentId) children.add(c);
+        }
+        sortSiblings(children);
+        return children;
+    }
+
+    /** The channel of that exact name directly below {@code parentId}, or {@code null}. */
+    public synchronized ChannelNode findChannelByName(int parentId, String name) {
+        for (ChannelNode c : channels.values()) {
+            if (c.parentId == parentId && c.name.equals(name)) return c;
+        }
+        return null;
+    }
+
     /** The "/"-separated path of a channel from the root, e.g. {@code "Lobby/Games"}. */
     public synchronized String channelPath(int id) {
         ChannelNode c = channels.get(id);

ts3-client/core/src/main/java/com/ts3client/net/filetransfer/FileTransferManager.java

@@ -52,6 +52,8 @@ public final class FileTransferManager {
 
     /** TeamSpeak error id returned by {@code ftgetfilelist} for an empty directory. */
     private static final int ERROR_DATABASE_EMPTY_RESULT = 0x0501;
+    /** How long to wait for the server to finish listing a directory. */
+    private static final long LIST_TIMEOUT_MS = 15_000;
 
     private final LocalTeamspeakClientSocket socket;
     /** Host we are connected to, used when the server reports no dedicated file-transfer host. */
@@ -70,6 +72,14 @@ public final class FileTransferManager {
      * routes back to the waiting transfer thread.
      */
     private final Map<Integer, CompletableFuture<Map<String, String>>> pendingInits = new ConcurrentHashMap<>();
+
+    /**
+     * The {@code ftgetfilelist} in progress. The server answers that command with a
+     * {@code notifyfilelist} event per entry and a closing {@code notifyfilelistfinished}
+     * rather than with rows of the command's own reply, so the entries are collected here
+     * until the listing ends. One listing may be in flight at a time.
+     */
+    private volatile FileListRequest fileListRequest;
     private final TS3Listener ftEventListener = new TS3Listener() {
         @Override
         public void onUnknownEvent(UnknownTeamspeakEvent e) {
@@ -88,34 +98,49 @@ public final class FileTransferManager {
     /**
      * Lists the files and subdirectories directly under {@code path} in the given
      * channel's repository. Returns an empty list for an empty directory.
+     *
+     * <p>Blocks until the server has sent the whole listing, so it must not be called from
+     * the event thread that delivers it.
      */
     public List<RemoteFile> list(int channelId, String channelPassword, String path)
             throws Exception {
+        String directory = path == null || path.isEmpty() ? "/" : path;
         SingleCommand cmd = new SingleCommand("ftgetfilelist", ProtocolRole.CLIENT,
                 new CommandSingleParameter("cid", Integer.toString(channelId)),
                 new CommandSingleParameter("cpw", channelPassword == null ? "" : channelPassword),
-                new CommandSingleParameter("path", path == null || path.isEmpty() ? "/" : path));
+                new CommandSingleParameter("path", directory));
 
-        List<RemoteFile> files = new ArrayList<>();
+        FileListRequest request = new FileListRequest(channelId, directory);
-        Iterable<SingleCommand> rows;
+        fileListRequest = request;
         try {
-            rows = socket.executeCommand(cmd).get();
+            socket.executeCommand(cmd).complete();
+            // The command's reply only acknowledges it; the entries are events, and the
+            // server marks their end with notifyfilelistfinished.
+            request.finished.get(LIST_TIMEOUT_MS, TimeUnit.MILLISECONDS);
         } catch (com.github.manevolent.ts3j.command.CommandException e) {
-            if (e.getErrorId() == ERROR_DATABASE_EMPTY_RESULT) return files;
+            if (e.getErrorId() != ERROR_DATABASE_EMPTY_RESULT) throw e;
-            throw e;
+        } catch (TimeoutException e) {
+            throw new IOException("The server did not finish listing " + directory);
+        } finally {
+            fileListRequest = null;
         }
-        for (SingleCommand row : rows) {
+        return new ArrayList<>(request.files);
-            Map<String, String> m = row.toMap();
+    }
-            String name = m.get("name");
+
-            if (name == null || name.isEmpty()) continue;
+    /** Collects one {@code notifyfilelist} entry for the listing in flight. */
-            files.add(new RemoteFile(
+    private void collectListEntry(Map<String, String> row) {
-                    name,
+        FileListRequest request = fileListRequest;
-                    m.getOrDefault("path", path),
+        if (request == null) return;
-                    parseLong(m.get("size")),
+        String cid = row.get("cid");
-                    "0".equals(m.get("type")),
+        if (cid != null && !cid.isEmpty() && parseLong(cid) != request.channelId) return;
-                    parseLong(m.get("datetime"))));
+        String name = row.get("name");
-        }
+        if (name == null || name.isEmpty()) return;
-        return files;
+        request.files.add(new RemoteFile(
+                name,
+                row.getOrDefault("path", request.path),
+                parseLong(row.get("size")),
+                "0".equals(row.get("type")),
+                parseLong(row.get("datetime"))));
     }
 
     /** Creates a new directory at {@code dirPath} (a full path such as {@code /new}). */
@@ -351,6 +376,15 @@ public final class FileTransferManager {
         String command = e.getCommand();
         if (command == null) return;
         Map<String, String> map = e.getMap();
+        if (command.equals("notifyfilelist")) {
+            collectListEntry(map);
+            return;
+        }
+        if (command.equals("notifyfilelistfinished")) {
+            FileListRequest request = fileListRequest;
+            if (request != null) request.finished.complete(null);
+            return;
+        }
         Integer ftfid = tryParseInt(map.get("clientftfid"));
         if (ftfid == null) return;
         CompletableFuture<Map<String, String>> future = pendingInits.get(ftfid);
@@ -454,4 +488,17 @@ public final class FileTransferManager {
         String m = r.getMessage();
         return m != null ? m : r.getClass().getSimpleName();
     }
+
+    /** One in-flight {@code ftgetfilelist} and the entries received for it so far. */
+    private static final class FileListRequest {
+        final int channelId;
+        final String path;
+        final List<RemoteFile> files = new java.util.concurrent.CopyOnWriteArrayList<>();
+        final CompletableFuture<Void> finished = new CompletableFuture<>();
+
+        FileListRequest(int channelId, String path) {
+            this.channelId = channelId;
+            this.path = path;
+        }
+    }
 }

ts3-client/core/src/main/java/com/ts3client/sound/SoundNotifier.java

@@ -113,7 +113,7 @@ public final class SoundNotifier {
         if (script == null) return;
 
         String resolved = script.resolve(withDefaults(variables));
-        double volume = Math.max(0, Math.min(1.0, settings.soundVolume));
+        double volume = Math.max(0, Math.min(1.0, settings.effectiveSoundVolume()));
         if (volume <= 0) return;
 
         if (script.kind() == SoundScript.Kind.SAY) {

ts3-client/core/src/main/java/com/ts3client/text/BBCode.java

@@ -37,6 +37,10 @@ public final class BBCode {
     /** CSS class on links that leave the client, so they are visibly not an identity. */
     public static final String EXTERNAL_LINK_CLASS = "extlink";
 
+    /** A single {@code [url=href]label[/url]} pair, the only markup the log carries. */
+    private static final Pattern URL_LINK =
+            Pattern.compile("(?i)\\[url=([^\\]]+)](.*?)\\[/url]");
+
     private BBCode() {
     }
 
@@ -70,6 +74,29 @@ public final class BBCode {
         return out.toString();
     }
 
+    /**
+     * Renders text carrying {@code [url=…]…[/url]} links and nothing else: everything
+     * outside those tags stays literal. The server log is written this way, so that a
+     * name happening to contain bracket markup is shown as it is rather than rendered.
+     */
+    public static String linksToHtml(String input) {
+        if (input == null || input.isEmpty()) return "";
+        StringBuilder out = new StringBuilder();
+        Matcher m = URL_LINK.matcher(input);
+        int last = 0;
+        while (m.find()) {
+            out.append(escape(input.substring(last, m.start())));
+            String href = m.group(1);
+            if (SAFE_URL.matcher(href).matches()) {
+                out.append(link(href)).append(escape(m.group(2))).append(linkClose(href));
+            } else {
+                out.append(escape(m.group()));
+            }
+            last = m.end();
+        }
+        return out.append(escape(input.substring(last))).toString();
+    }
+
     /** Escapes plain text for HTML without interpreting any BBCode. */
     public static String escape(String s) {
         if (s == null) return "";

ts3-client/core/src/test/java/com/ts3client/net/EventFieldsTest.java

@@ -9,7 +9,7 @@ import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertNotNull;
 
 /**
- * Pins the ts3j behaviour {@code TeamspeakConnection.has(...)} exists for: a field
+ * Pins the ts3j behaviour {@code ConnectionEventHandler.has(...)} exists for: a field
  * the event never carried reads back as an empty string, so a null check would treat
  * every partial update (someone muting, say) as if it reported every other field too.
  */

ts3-client/core/src/test/java/com/ts3client/text/BBCodeLinksTest.java

@@ -0,0 +1,40 @@
+package com.ts3client.text;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+/**
+ * The server log's renderer: it turns the client's own links into anchors and leaves
+ * everything else — names carrying bracket markup included — as plain text.
+ */
+class BBCodeLinksTest {
+
+    @Test
+    void rendersClientAndChannelLinks() {
+        String log = TsLink.clientBBCode(7, "uid=", "Bob") + " connected to channel \""
+                + TsLink.channelBBCode(3, "Lobby") + "\"";
+        String html = BBCode.linksToHtml(log);
+        assertTrue(html.contains("href=\"client://7/uid=~Bob\""), html);
+        assertTrue(html.contains(">Bob</a>"), html);
+        assertTrue(html.contains("href=\"channel://3/Lobby\""), html);
+        assertTrue(html.contains(">Lobby</a>"), html);
+    }
+
+    @Test
+    void leavesOtherMarkupLiteral() {
+        assertEquals("[b]not bold[/b] &amp; &lt;i&gt;", BBCode.linksToHtml("[b]not bold[/b] & <i>"));
+    }
+
+    @Test
+    void keepsBracketsInsideALabelLiteral() {
+        String html = BBCode.linksToHtml(TsLink.channelBBCode(3, "[cspacer]---"));
+        assertTrue(html.contains(">[cspacer]---</a>"), html);
+    }
+
+    @Test
+    void rejectsHrefsThatAreNotLinks() {
+        assertEquals("[url=javascript:alert(1)]x[/url]", BBCode.linksToHtml("[url=javascript:alert(1)]x[/url]"));
+    }
+}

ts3-client/pom.xml

@@ -23,6 +23,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <ts3j.version>1.0.3</ts3j.version>
         <jsvg.version>2.1.0</jsvg.version>
+        <flatlaf.version>3.7.2</flatlaf.version>
         <surefire.version>3.5.6</surefire.version>
     </properties>
 
@@ -50,6 +51,11 @@
                 <artifactId>jsvg</artifactId>
                 <version>${jsvg.version}</version>
             </dependency>
+            <dependency>
+                <groupId>com.formdev</groupId>
+                <artifactId>flatlaf</artifactId>
+                <version>${flatlaf.version}</version>
+            </dependency>
             <dependency>
                 <groupId>com.ts3client</groupId>
                 <artifactId>ts3-client-core</artifactId>

ts3-client/swing/pom.xml

@@ -35,6 +35,10 @@
             <groupId>com.github.weisj</groupId>
             <artifactId>jsvg</artifactId>
         </dependency>
+        <dependency>
+            <groupId>com.formdev</groupId>
+            <artifactId>flatlaf</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter</artifactId>
@@ -84,6 +88,15 @@
                                         <include>**</include>
                                     </includes>
                                 </filter>
+                                <!-- FlatLaf instantiates its UI delegates by name and reads its
+                                     themes from .properties resources; neither is reachable
+                                     statically, so minimizeJar must not touch it. -->
+                                <filter>
+                                    <artifact>com.formdev:flatlaf</artifact>
+                                    <includes>
+                                        <include>**</include>
+                                    </includes>
+                                </filter>
                                 <filter>
                                     <artifact>*:*</artifact>
                                     <excludes>

ts3-client/swing/src/main/java/com/ts3client/Main.java

@@ -2,14 +2,14 @@ package com.ts3client;
 
 import com.ts3client.config.Settings;
 import com.ts3client.ui.IconTheme;
+import com.ts3client.ui.LookAndFeelManager;
 import com.ts3client.ui.MainFrame;
 
 import javax.swing.SwingUtilities;
-import javax.swing.UIManager;
 
 /**
- * Application entry point. Loads settings, applies the system look-and-feel and
+ * Application entry point. Loads settings, installs the look-and-feel and shows the
- * shows the main window on the Swing event dispatch thread.
+ * main window on the Swing event dispatch thread.
  */
 public final class Main {
 
@@ -23,11 +23,7 @@ public final class Main {
         final Settings settings = Settings.load();
 
         SwingUtilities.invokeLater(() -> {
-            try {
+            LookAndFeelManager.install(settings.appearance);
-                UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
-            } catch (Exception ignored) {
-                // fall back to cross-platform L&F
-            }
             IconTheme.get().reload(settings);
             new MainFrame(settings).setVisible(true);
         });

ts3-client/swing/src/main/java/com/ts3client/ui/ChannelAdvancedPanel.java

@@ -0,0 +1,200 @@
+package com.ts3client.ui;
+
+import com.ts3client.net.ChannelSettings;
+
+import javax.swing.BorderFactory;
+import javax.swing.Box;
+import javax.swing.BoxLayout;
+import javax.swing.ButtonGroup;
+import javax.swing.JButton;
+import javax.swing.JCheckBox;
+import javax.swing.JLabel;
+import javax.swing.JPanel;
+import javax.swing.JRadioButton;
+import javax.swing.JSpinner;
+import javax.swing.JTextField;
+import javax.swing.SpinnerNumberModel;
+import java.awt.Dimension;
+import java.awt.FlowLayout;
+import java.awt.GridBagConstraints;
+import java.awt.GridBagLayout;
+import java.awt.Insets;
+
+/**
+ * The channel editor's "Advanced" tab: the phonetic name, the delete delay of a temporary
+ * channel, voice encryption, and the two client limits.
+ */
+final class ChannelAdvancedPanel extends JPanel implements ChannelDialog.Tab {
+
+    /** TeamSpeak's ceiling for {@code channel_delete_delay}, in seconds. */
+    private static final int MAX_DELETE_DELAY = 604800;
+
+    private final JTextField phoneticName = new JTextField();
+    private final JSpinner deleteDelay =
+            Spinners.compact(new JSpinner(new SpinnerNumberModel(0, 0, MAX_DELETE_DELAY, 1)));
+    private final JButton deleteDelayMax = new JButton("max");
+    private final JCheckBox encrypted = new JCheckBox("Voice Data encrypted");
+
+    private final JRadioButton maxUsersUnlimited = new JRadioButton("Unlimited");
+    private final JRadioButton maxUsersLimited = new JRadioButton("Limited");
+    private final JSpinner maxUsers = Spinners.compact(new JSpinner(new SpinnerNumberModel(16, 0, 65535, 1)));
+
+    private final JRadioButton familyInherited = new JRadioButton("Inherited");
+    private final JRadioButton familyUnlimited = new JRadioButton("Unlimited");
+    private final JRadioButton familyLimited = new JRadioButton("Limited");
+    private final JSpinner familyMaxUsers =
+            Spinners.compact(new JSpinner(new SpinnerNumberModel(16, 0, 65535, 1)));
+
+    ChannelAdvancedPanel() {
+        setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));
+        setBorder(BorderFactory.createEmptyBorder(8, 8, 8, 8));
+
+        phoneticName.setToolTipText("Set phonetic nickname used for this channel by text-to-speech.");
+        deleteDelay.setToolTipText("<html><p>Delay in seconds after temporary channels are deleted"
+                + " after the last user left the channel.</p></html>");
+        deleteDelayMax.setToolTipText("Set delete delay to maximum value");
+        deleteDelayMax.addActionListener(a -> deleteDelay.setValue(MAX_DELETE_DELAY));
+        encrypted.setToolTipText("Voice data in this channel will be encrypted.");
+
+        ButtonGroup users = new ButtonGroup();
+        users.add(maxUsersUnlimited);
+        users.add(maxUsersLimited);
+        maxUsersUnlimited.setToolTipText("Unlimited number of clients can join this channel.");
+        maxUsersLimited.setToolTipText("Limit number of clients in this channel.");
+        maxUsersUnlimited.addActionListener(a -> syncLimits());
+        maxUsersLimited.addActionListener(a -> syncLimits());
+
+        ButtonGroup family = new ButtonGroup();
+        family.add(familyInherited);
+        family.add(familyUnlimited);
+        family.add(familyLimited);
+        familyInherited.setToolTipText("Inherit the client limit by parent channel.");
+        familyUnlimited.setToolTipText("The channel subtree can be joined by unlimited number of clients.");
+        familyLimited.setToolTipText("Limit the number of clients in the channel subtree.");
+        for (JRadioButton radio : new JRadioButton[]{familyInherited, familyUnlimited, familyLimited}) {
+            radio.addActionListener(a -> syncLimits());
+        }
+
+        JPanel other = otherSettings();
+        other.setAlignmentX(0f);
+        fixHeight(other);
+        add(other);
+        add(Box.createVerticalStrut(6));
+
+        JPanel limits = new JPanel();
+        limits.setLayout(new BoxLayout(limits, BoxLayout.X_AXIS));
+        limits.add(limitBox("Max Users", new JRadioButton[]{maxUsersUnlimited, maxUsersLimited}, maxUsers));
+        limits.add(Box.createHorizontalStrut(8));
+        limits.add(limitBox("Family Max Users",
+                new JRadioButton[]{familyInherited, familyUnlimited, familyLimited}, familyMaxUsers));
+        limits.setAlignmentX(0f);
+        fixHeight(limits);
+        add(limits);
+        add(Box.createVerticalGlue());
+    }
+
+    /** The delete delay only means anything for a channel that disappears on its own. */
+    void setChannelType(ChannelSettings.Type type) {
+        boolean temporary = type == ChannelSettings.Type.TEMPORARY;
+        deleteDelay.setEnabled(temporary);
+        deleteDelayMax.setEnabled(temporary);
+    }
+
+    @Override
+    public void read(ChannelSettings settings) {
+        phoneticName.setText(settings.phoneticName);
+        deleteDelay.setValue(Math.min(MAX_DELETE_DELAY, Math.max(0, settings.deleteDelay)));
+        encrypted.setSelected(settings.encrypted);
+
+        if (settings.maxClientsUnlimited) maxUsersUnlimited.setSelected(true);
+        else maxUsersLimited.setSelected(true);
+        maxUsers.setValue(settings.maxClients);
+
+        if (settings.familyInherited) familyInherited.setSelected(true);
+        else if (settings.familyUnlimited) familyUnlimited.setSelected(true);
+        else familyLimited.setSelected(true);
+        familyMaxUsers.setValue(settings.maxFamilyClients);
+
+        setChannelType(settings.type);
+        syncLimits();
+    }
+
+    @Override
+    public void write(ChannelSettings settings) {
+        settings.phoneticName = phoneticName.getText();
+        settings.deleteDelay = (Integer) deleteDelay.getValue();
+        settings.encrypted = encrypted.isSelected();
+        settings.maxClientsUnlimited = maxUsersUnlimited.isSelected();
+        settings.maxClients = (Integer) maxUsers.getValue();
+        settings.familyInherited = familyInherited.isSelected();
+        settings.familyUnlimited = familyUnlimited.isSelected();
+        settings.maxFamilyClients = (Integer) familyMaxUsers.getValue();
+    }
+
+    private void syncLimits() {
+        maxUsers.setEnabled(maxUsersLimited.isSelected());
+        familyMaxUsers.setEnabled(familyLimited.isSelected());
+    }
+
+    private JPanel otherSettings() {
+        JPanel panel = new JPanel(new GridBagLayout());
+        panel.setBorder(BorderFactory.createTitledBorder("Other Settings"));
+        GridBagConstraints c = new GridBagConstraints();
+        c.insets = new Insets(3, 4, 3, 4);
+        c.anchor = GridBagConstraints.WEST;
+        c.fill = GridBagConstraints.HORIZONTAL;
+
+        c.gridx = 0;
+        c.gridy = 0;
+        panel.add(new JLabel("Phonetic Name:"), c);
+        c.gridx = 1;
+        c.weightx = 1;
+        panel.add(phoneticName, c);
+
+        c.gridx = 0;
+        c.gridy = 1;
+        c.weightx = 0;
+        panel.add(new JLabel("Delete delay:"), c);
+        JPanel delay = new JPanel(new FlowLayout(FlowLayout.LEFT, 4, 0));
+        delay.add(deleteDelay);
+        delay.add(deleteDelayMax);
+        c.gridx = 1;
+        c.weightx = 1;
+        panel.add(delay, c);
+
+        c.gridx = 1;
+        c.gridy = 2;
+        panel.add(encrypted, c);
+        return panel;
+    }
+
+    /**
+     * A limit box: its choices stacked, with the count beside the last of them —
+     * "Limited", the only choice it belongs to.
+     */
+    private JPanel limitBox(String title, JRadioButton[] choices, JSpinner spinner) {
+        JPanel box = new JPanel();
+        box.setLayout(new BoxLayout(box, BoxLayout.Y_AXIS));
+        box.setBorder(BorderFactory.createTitledBorder(title));
+        for (int i = 0; i < choices.length; i++) {
+            JRadioButton radio = choices[i];
+            radio.setAlignmentX(0f);
+            if (i < choices.length - 1) {
+                box.add(radio);
+                continue;
+            }
+            JPanel row = new JPanel(new FlowLayout(FlowLayout.LEFT, 6, 0));
+            row.setAlignmentX(0f);
+            row.add(radio);
+            row.add(spinner);
+            box.add(row);
+        }
+        box.add(Box.createVerticalGlue());
+        return box;
+    }
+
+    /** Keeps a section at its natural height, so the free space collects at the bottom. */
+    private static void fixHeight(JPanel panel) {
+        panel.setMaximumSize(new Dimension(Integer.MAX_VALUE, panel.getPreferredSize().height));
+    }
+}

ts3-client/swing/src/main/java/com/ts3client/ui/ChannelAudioPanel.java

@@ -0,0 +1,166 @@
+package com.ts3client.ui;
+
+import com.ts3client.net.ChannelSettings;
+
+import javax.swing.BorderFactory;
+import javax.swing.Box;
+import javax.swing.BoxLayout;
+import javax.swing.ButtonGroup;
+import javax.swing.JComboBox;
+import javax.swing.JLabel;
+import javax.swing.JPanel;
+import javax.swing.JRadioButton;
+import javax.swing.JSlider;
+import java.awt.BorderLayout;
+import java.awt.GridBagConstraints;
+import java.awt.GridBagLayout;
+import java.awt.Insets;
+
+/**
+ * The channel editor's "Audio" tab: the codec preset, or the codec and quality picked by
+ * hand, with the bandwidth one talking client then costs.
+ */
+final class ChannelAudioPanel extends JPanel implements ChannelDialog.Tab {
+
+    /** Codec names in TeamSpeak's own id order, which is what the combo box index is. */
+    private static final String[] CODEC_NAMES = {
+            "Speex Narrowband", "Speex Wideband", "Speex Ultra-Wideband",
+            "CELT Mono", "Opus Voice", "Opus Music"};
+
+    /**
+     * Bandwidth per talking client in KiB/s at quality 0 and 10, per codec, as published by
+     * TeamSpeak. The steps in between are interpolated: the client shows a figure per
+     * quality step, and only the two ends of each codec's range are documented.
+     */
+    private static final double[][] BANDWIDTH_RANGE = {
+            {2.49, 5.22}, {2.69, 7.37}, {2.73, 7.57}, {6.10, 13.92}, {2.73, 7.71}, {3.08, 11.87}};
+
+    private static final int CODEC_OPUS_VOICE = 4;
+    private static final int CODEC_OPUS_MUSIC = 5;
+
+    private final JRadioButton voiceMobile = new JRadioButton("Voice Mobile");
+    private final JRadioButton voiceDesktop = new JRadioButton("Voice Desktop");
+    private final JRadioButton music = new JRadioButton("Music");
+    private final JRadioButton custom = new JRadioButton("Custom");
+    private final JComboBox<String> codec = new JComboBox<>(CODEC_NAMES);
+    private final JSlider quality = new JSlider(0, 10, 6);
+    private final JLabel qualityValue = new JLabel("6");
+    private final JLabel bandwidth = new JLabel();
+    private final JPanel customSettings = new JPanel(new GridBagLayout());
+
+    ChannelAudioPanel() {
+        super(new BorderLayout(8, 8));
+        setBorder(BorderFactory.createEmptyBorder(8, 8, 8, 8));
+
+        ButtonGroup presets = new ButtonGroup();
+        presets.add(voiceMobile);
+        presets.add(voiceDesktop);
+        presets.add(music);
+        presets.add(custom);
+        voiceMobile.addActionListener(a -> applyPreset(CODEC_OPUS_VOICE, 4));
+        voiceDesktop.addActionListener(a -> applyPreset(CODEC_OPUS_VOICE, 6));
+        music.addActionListener(a -> applyPreset(CODEC_OPUS_MUSIC, 6));
+        custom.addActionListener(a -> setCustomEnabled(true));
+
+        codec.addActionListener(a -> updateBandwidth());
+        quality.setMajorTickSpacing(1);
+        quality.setPaintTicks(true);
+        quality.setSnapToTicks(true);
+        quality.addChangeListener(e -> updateBandwidth());
+
+        add(presetBox(), BorderLayout.WEST);
+        add(customBox(), BorderLayout.CENTER);
+        add(bandwidthRow(), BorderLayout.SOUTH);
+    }
+
+    @Override
+    public void read(ChannelSettings settings) {
+        codec.setSelectedIndex(Math.max(0, Math.min(CODEC_NAMES.length - 1, settings.codec)));
+        quality.setValue(Math.max(0, Math.min(10, settings.codecQuality)));
+        if (settings.codec == CODEC_OPUS_VOICE && settings.codecQuality == 4) voiceMobile.setSelected(true);
+        else if (settings.codec == CODEC_OPUS_VOICE && settings.codecQuality == 6) voiceDesktop.setSelected(true);
+        else if (settings.codec == CODEC_OPUS_MUSIC && settings.codecQuality == 6) music.setSelected(true);
+        else custom.setSelected(true);
+        setCustomEnabled(custom.isSelected());
+        updateBandwidth();
+    }
+
+    @Override
+    public void write(ChannelSettings settings) {
+        settings.codec = codec.getSelectedIndex();
+        settings.codecQuality = quality.getValue();
+    }
+
+    private void applyPreset(int codecId, int qualityValue) {
+        codec.setSelectedIndex(codecId);
+        quality.setValue(qualityValue);
+        setCustomEnabled(false);
+        updateBandwidth();
+    }
+
+    private void setCustomEnabled(boolean enabled) {
+        customSettings.setEnabled(enabled);
+        for (java.awt.Component child : customSettings.getComponents()) child.setEnabled(enabled);
+    }
+
+    private void updateBandwidth() {
+        qualityValue.setText(Integer.toString(quality.getValue()));
+        int index = Math.max(0, Math.min(BANDWIDTH_RANGE.length - 1, codec.getSelectedIndex()));
+        double[] range = BANDWIDTH_RANGE[index];
+        double value = range[0] + (range[1] - range[0]) * quality.getValue() / 10.0;
+        bandwidth.setText(String.format("%.2f KiB/s", value));
+    }
+
+    private JPanel presetBox() {
+        JPanel box = new JPanel();
+        box.setLayout(new BoxLayout(box, BoxLayout.Y_AXIS));
+        box.setBorder(BorderFactory.createTitledBorder("Presets"));
+        for (JRadioButton radio : new JRadioButton[]{voiceMobile, voiceDesktop, music, custom}) {
+            radio.setAlignmentX(0f);
+            box.add(radio);
+        }
+        box.add(Box.createVerticalGlue());
+        return box;
+    }
+
+    private JPanel customBox() {
+        customSettings.setBorder(BorderFactory.createTitledBorder("Custom Settings"));
+        GridBagConstraints c = new GridBagConstraints();
+        c.insets = new Insets(4, 4, 4, 4);
+        c.anchor = GridBagConstraints.WEST;
+        c.fill = GridBagConstraints.HORIZONTAL;
+
+        c.gridx = 0;
+        c.gridy = 0;
+        customSettings.add(new JLabel("Codec:"), c);
+        c.gridx = 1;
+        c.weightx = 1;
+        c.gridwidth = 2;
+        customSettings.add(codec, c);
+
+        c.gridwidth = 1;
+        c.gridx = 0;
+        c.gridy = 1;
+        c.weightx = 0;
+        customSettings.add(new JLabel("Quality:"), c);
+        c.gridx = 1;
+        c.weightx = 1;
+        customSettings.add(quality, c);
+        c.gridx = 2;
+        c.weightx = 0;
+        customSettings.add(qualityValue, c);
+
+        c.gridx = 0;
+        c.gridy = 2;
+        c.weighty = 1;
+        customSettings.add(Box.createVerticalGlue(), c);
+        return customSettings;
+    }
+
+    private JPanel bandwidthRow() {
+        JPanel row = new JPanel(new BorderLayout(6, 0));
+        row.add(new JLabel("Bandwidth usage:"), BorderLayout.WEST);
+        row.add(bandwidth, BorderLayout.CENTER);
+        return row;
+    }
+}

ts3-client/swing/src/main/java/com/ts3client/ui/ChannelDialog.java

@@ -0,0 +1,433 @@
+package com.ts3client.ui;
+
+import com.ts3client.net.ChannelNode;
+import com.ts3client.net.ChannelSettings;
+import com.ts3client.net.TeamspeakConnection;
+
+import javax.swing.BorderFactory;
+import javax.swing.ImageIcon;
+import javax.swing.JButton;
+import javax.swing.JDialog;
+import javax.swing.JLabel;
+import javax.swing.JMenuItem;
+import javax.swing.JOptionPane;
+import javax.swing.JPanel;
+import javax.swing.JPasswordField;
+import javax.swing.JPopupMenu;
+import javax.swing.JScrollPane;
+import javax.swing.JTabbedPane;
+import javax.swing.JTextArea;
+import javax.swing.JTextField;
+import javax.swing.SwingUtilities;
+import javax.swing.Timer;
+import javax.swing.event.DocumentEvent;
+import javax.swing.event.DocumentListener;
+import java.awt.BorderLayout;
+import java.awt.Dimension;
+import java.awt.GridBagConstraints;
+import java.awt.GridBagLayout;
+import java.awt.Insets;
+import java.awt.Window;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * TeamSpeak's channel editor: the channel's name, icon, password, topic and description
+ * above four tabs holding everything else. The official client uses the same dialog to
+ * create a channel and to edit one, and so does this.
+ *
+ * <p>When editing, the channel's properties are not in the tree model — the tree only
+ * carries what the server pushes for display — so the dialog opens empty and fills itself
+ * from a {@code channelinfo}, with its own permissions arriving separately. Saving sends
+ * only what was actually changed, because a {@code channeledit} carrying one property the
+ * client may not modify is refused as a whole.
+ *
+ * <p>When creating, there is nothing to read: the dialog starts from the defaults its
+ * caller chose and sends a {@code channelcreate} carrying whatever deviates from a plain
+ * new channel, for the same reason.
+ */
+final class ChannelDialog extends JDialog {
+
+    /** A tab that maps a part of the channel's settings onto its controls. */
+    interface Tab {
+        void read(ChannelSettings settings);
+
+        void write(ChannelSettings settings);
+    }
+
+    /** How long, and how often, to keep looking for a channel icon that is still downloading. */
+    private static final int ICON_RETRY_MS = 500;
+    private static final int ICON_RETRIES = 20;
+
+    /** What the password field shows for an existing password, which is never readable. */
+    private static final String PASSWORD_PLACEHOLDER = "••••••••";
+
+    private static final String NAME_TOOLTIP = "<html>Name of this channel displayed in the tree."
+            + "<table>"
+            + "<tr><td style='white-space:nowrap'>Syntax: \"<strong>[?Spacer#]Text</strong>\"</td></tr>"
+            + "<tr><td style='white-space:nowrap'>Where \"?\" stands for an alignment"
+            + " (r=right, c=center, l=left),</td></tr>"
+            + "<tr><td style='white-space:nowrap'>\"*\" will repeat the text to fill the whole line.</td></tr>"
+            + "<tr><td style='white-space:nowrap'>Change \"#\" to get a unique channel name.</td></tr>"
+            + "<tr><td style='white-space:nowrap'>[lSpacer0] a left aligned text</td></tr>"
+            + "<tr><td style='white-space:nowrap'>[cSpacer1] a centered text</td></tr>"
+            + "<tr><td style='white-space:nowrap'>[rSpacer2] a right aligned text</td></tr>"
+            + "<tr><td style='white-space:nowrap'>Use one of the three-character-blocks as text for a"
+            + " special spacer: \"---\", \"...\", \"-.-\", \"___\", \"-..\"</td></tr>"
+            + "</table></html>";
+
+    private final TeamspeakConnection conn;
+    private final GroupIcons groupIcons;
+    /** The channel being edited, or {@code null} when a new one is being created. */
+    private final ChannelNode channel;
+    /** Where a new channel goes; 0 is the top level. Unused when editing. */
+    private final int parentId;
+
+    private final JTextField name = new JTextField();
+    private final JPasswordField password = new JPasswordField();
+    private final JTextField topic = new JTextField();
+    private final JTextArea description = new JTextArea(5, 40);
+    private final JButton iconButton = new JButton();
+    private final JButton ok = new JButton("OK");
+
+    private final ChannelStandardPanel standardPanel;
+    private final ChannelAudioPanel audioPanel = new ChannelAudioPanel();
+    private final ChannelPermissionsPanel permissionsPanel = new ChannelPermissionsPanel();
+    private final ChannelAdvancedPanel advancedPanel = new ChannelAdvancedPanel();
+
+    /** The tabs backed by {@link ChannelSettings}; the permissions tab has its own source. */
+    private final List<Tab> settingsTabs;
+
+    /** The channel as the server last described it; the baseline every change is measured against. */
+    private ChannelSettings original;
+    private long iconId;
+    private boolean passwordEdited;
+
+    /** The editor for an existing channel. */
+    static ChannelDialog toEdit(Window owner, TeamspeakConnection conn, GroupIcons groupIcons,
+                                ChannelNode channel) {
+        return new ChannelDialog(owner, conn, groupIcons, "Edit Channel: " + channel.name,
+                channel, channel.parentId, null);
+    }
+
+    /**
+     * The editor for a channel that does not exist yet.
+     *
+     * @param parentId the channel it goes below, 0 being the top level
+     * @param defaults what the dialog opens with, e.g. the channel type its caller prefers
+     */
+    static ChannelDialog toCreate(Window owner, TeamspeakConnection conn, GroupIcons groupIcons,
+                                  String title, int parentId, ChannelSettings defaults) {
+        return new ChannelDialog(owner, conn, groupIcons, title, null, parentId, defaults);
+    }
+
+    private ChannelDialog(Window owner, TeamspeakConnection conn, GroupIcons groupIcons, String title,
+                          ChannelNode channel, int parentId, ChannelSettings defaults) {
+        super(owner, title, ModalityType.APPLICATION_MODAL);
+        this.conn = conn;
+        this.groupIcons = groupIcons;
+        this.channel = channel;
+        this.parentId = parentId;
+        this.standardPanel = new ChannelStandardPanel(channel != null
+                ? conn.getModel().siblingsOf(channel.id) : conn.getModel().childrenOf(parentId));
+
+        standardPanel.onTypeChanged(advancedPanel::setChannelType);
+        settingsTabs = List.of(standardPanel, audioPanel, advancedPanel);
+
+        JTabbedPane tabs = new JTabbedPane();
+        tabs.addTab("Standard", standardPanel);
+        tabs.addTab("Audio", audioPanel);
+        tabs.addTab("Permissions", permissionsPanel);
+        tabs.addTab("Advanced", advancedPanel);
+
+        // The tabs need no more than their natural height, so they sit at the bottom
+        // with the buttons and every spare pixel goes to the description instead.
+        JPanel bottom = new JPanel(new BorderLayout(0, 6));
+        bottom.add(tabs, BorderLayout.CENTER);
+        bottom.add(buttons(), BorderLayout.SOUTH);
+
+        getContentPane().setLayout(new BorderLayout(0, 6));
+        getContentPane().add(header(), BorderLayout.CENTER);
+        getContentPane().add(bottom, BorderLayout.SOUTH);
+
+        setEnabledForLoading(false);
+        Dialogs.closeOnEscape(this);
+        setDefaultCloseOperation(DISPOSE_ON_CLOSE);
+        setSize(new Dimension(560, 620));
+        setMinimumSize(new Dimension(480, 520));
+        setLocationRelativeTo(owner);
+
+        if (channel != null) load();
+        else prepareNew(defaults);
+    }
+
+    // ---- layout ----
+
+    private JPanel header() {
+        JPanel panel = new JPanel(new GridBagLayout());
+        panel.setBorder(BorderFactory.createEmptyBorder(8, 8, 0, 8));
+        GridBagConstraints c = new GridBagConstraints();
+        c.insets = new Insets(3, 4, 3, 4);
+        c.anchor = GridBagConstraints.WEST;
+        c.fill = GridBagConstraints.HORIZONTAL;
+
+        name.setToolTipText(NAME_TOOLTIP);
+        password.setToolTipText("Optional password for this channel.");
+        topic.setToolTipText("Optional topic for this channel, displayed in the info area on the right.");
+        password.getDocument().addDocumentListener(new DocumentListener() {
+            @Override
+            public void insertUpdate(DocumentEvent e) {
+                passwordEdited = true;
+            }
+
+            @Override
+            public void removeUpdate(DocumentEvent e) {
+                passwordEdited = true;
+            }
+
+            @Override
+            public void changedUpdate(DocumentEvent e) {
+                passwordEdited = true;
+            }
+        });
+
+        c.gridx = 0;
+        c.gridy = 0;
+        panel.add(new JLabel("Name:"), c);
+        c.gridx = 1;
+        c.weightx = 1;
+        panel.add(name, c);
+        c.gridx = 2;
+        c.weightx = 0;
+        panel.add(iconField(), c);
+
+        c.gridx = 0;
+        c.gridy = 1;
+        panel.add(new JLabel("Password:"), c);
+        c.gridx = 1;
+        c.gridwidth = 2;
+        c.weightx = 1;
+        panel.add(password, c);
+
+        c.gridwidth = 1;
+        c.gridx = 0;
+        c.gridy = 2;
+        c.weightx = 0;
+        panel.add(new JLabel("Topic:"), c);
+        c.gridx = 1;
+        c.gridwidth = 2;
+        c.weightx = 1;
+        panel.add(topic, c);
+
+        c.gridwidth = 1;
+        c.gridx = 0;
+        c.gridy = 3;
+        c.weightx = 0;
+        panel.add(new JLabel("Description:"), c);
+        JButton popOut = new JButton("Edit…");
+        popOut.setToolTipText("Tear off description editor");
+        popOut.addActionListener(a -> editDescription());
+        c.gridx = 1;
+        c.gridwidth = 2;
+        c.fill = GridBagConstraints.NONE;
+        panel.add(popOut, c);
+
+        description.setLineWrap(true);
+        description.setWrapStyleWord(true);
+        c.gridx = 0;
+        c.gridy = 4;
+        c.gridwidth = 3;
+        c.weightx = 1;
+        c.weighty = 1;
+        c.fill = GridBagConstraints.BOTH;
+        panel.add(new JScrollPane(description), c);
+        return panel;
+    }
+
+    private JPanel iconField() {
+        iconButton.setToolTipText("Set channel icon.");
+        iconButton.setPreferredSize(new Dimension(26, 24));
+        iconButton.setMargin(new Insets(1, 1, 1, 1));
+        iconButton.addActionListener(a -> chooseIcon());
+        iconButton.addMouseListener(new MouseAdapter() {
+            @Override
+            public void mousePressed(MouseEvent e) {
+                if (e.isPopupTrigger()) showIconMenu(e);
+            }
+
+            @Override
+            public void mouseReleased(MouseEvent e) {
+                if (e.isPopupTrigger()) showIconMenu(e);
+            }
+        });
+        JPanel row = new JPanel(new BorderLayout(4, 0));
+        row.add(new JLabel("Icon:"), BorderLayout.WEST);
+        row.add(iconButton, BorderLayout.CENTER);
+        return row;
+    }
+
+    private JPanel buttons() {
+        JButton cancel = new JButton("Cancel");
+        ok.addActionListener(a -> save());
+        cancel.addActionListener(a -> dispose());
+        JPanel panel = new JPanel(new BorderLayout());
+        panel.setBorder(BorderFactory.createEmptyBorder(0, 8, 8, 8));
+        JPanel right = new JPanel();
+        right.add(ok);
+        right.add(cancel);
+        panel.add(right, BorderLayout.EAST);
+        getRootPane().setDefaultButton(ok);
+        return panel;
+    }
+
+    // ---- loading ----
+
+    private void load() {
+        conn.requestChannelSettings(channel.id, (settings, error) -> SwingUtilities.invokeLater(() -> {
+            if (error != null) {
+                JOptionPane.showMessageDialog(this, "Could not read the channel: " + error,
+                        "Error", JOptionPane.ERROR_MESSAGE);
+                dispose();
+                return;
+            }
+            apply(settings);
+        }));
+        conn.requestChannelPermissions(channel.id, (permissions, error) -> SwingUtilities.invokeLater(() -> {
+            if (error != null) permissionsPanel.showUnavailable("No permission to view channel permissions.");
+            else permissionsPanel.read(permissions);
+        }));
+    }
+
+    /**
+     * Opens the dialog on a channel that does not exist yet. Its permissions start empty
+     * and editable — they are applied to the channel once the server has created it.
+     */
+    private void prepareNew(ChannelSettings defaults) {
+        permissionsPanel.read(Map.of());
+        apply(defaults);
+        name.selectAll();
+    }
+
+    private void apply(ChannelSettings settings) {
+        original = settings;
+        name.setText(settings.name);
+        topic.setText(settings.topic);
+        description.setText(settings.description);
+        description.setCaretPosition(0);
+        if (settings.hasPassword) password.setText(PASSWORD_PLACEHOLDER);
+        passwordEdited = false;
+        setIconId(settings.iconId);
+        for (Tab tab : settingsTabs) tab.read(settings);
+        setEnabledForLoading(true);
+        name.requestFocusInWindow();
+    }
+
+    private void setEnabledForLoading(boolean loaded) {
+        ok.setEnabled(loaded);
+        name.setEnabled(loaded);
+        password.setEnabled(loaded);
+        topic.setEnabled(loaded);
+        description.setEnabled(loaded);
+        iconButton.setEnabled(loaded);
+    }
+
+    // ---- icon ----
+
+    private void setIconId(long id) {
+        setIconId(id, ICON_RETRIES);
+    }
+
+    /**
+     * @param retries how many more times to look for an icon that is still downloading;
+     *                one that never arrives (deleted, or not ours to read) simply stays blank
+     */
+    private void setIconId(long id, int retries) {
+        iconId = id;
+        ImageIcon icon = groupIcons.icon(id);
+        iconButton.setIcon(icon);
+        if (icon != null || id == 0 || retries <= 0) return;
+        Timer retry = new Timer(ICON_RETRY_MS, null);
+        retry.setRepeats(false);
+        retry.addActionListener(e -> {
+            if (iconId == id) setIconId(id, retries - 1);
+        });
+        retry.start();
+    }
+
+    private void chooseIcon() {
+        IconChooserDialog chooser = new IconChooserDialog(this, conn, groupIcons);
+        chooser.setVisible(true);
+        if (chooser.isAccepted()) setIconId(chooser.getIconId());
+    }
+
+    private void showIconMenu(MouseEvent e) {
+        JPopupMenu menu = new JPopupMenu();
+        JMenuItem edit = new JMenuItem("Edit Icon");
+        edit.addActionListener(a -> chooseIcon());
+        JMenuItem remove = new JMenuItem("Remove Icon");
+        remove.setEnabled(iconId != 0);
+        remove.addActionListener(a -> setIconId(0));
+        menu.add(edit);
+        menu.add(remove);
+        menu.show(e.getComponent(), e.getX(), e.getY());
+    }
+
+    // ---- description ----
+
+    private void editDescription() {
+        DescriptionEditorDialog editor = new DescriptionEditorDialog(this, description.getText());
+        editor.setVisible(true);
+        if (editor.isAccepted()) description.setText(editor.getDescription());
+    }
+
+    // ---- saving ----
+
+    private void save() {
+        if (original == null) return;
+        ChannelSettings edited = original.copy();
+        edited.name = name.getText().trim();
+        edited.topic = topic.getText();
+        edited.description = description.getText();
+        edited.password = passwordEdited ? new String(password.getPassword()) : null;
+        edited.iconId = iconId;
+        for (Tab tab : settingsTabs) tab.write(edited);
+
+        if (edited.name.isEmpty()) {
+            JOptionPane.showMessageDialog(this, "The channel needs a name.",
+                    "Error", JOptionPane.ERROR_MESSAGE);
+            return;
+        }
+
+        if (channel == null) {
+            ok.setEnabled(false);
+            conn.createChannel(parentId, edited.creationParameters(), permissionsPanel.changed(),
+                    (channelId, error) -> SwingUtilities.invokeLater(
+                            () -> finish(error, "Could not create the channel: ")));
+            return;
+        }
+
+        Map<String, String> changes = edited.changesFrom(original);
+        Map<String, Integer> setPermissions = permissionsPanel.changed();
+        List<String> clearedPermissions = permissionsPanel.cleared();
+        if (changes.isEmpty() && setPermissions.isEmpty() && clearedPermissions.isEmpty()) {
+            dispose();
+            return;
+        }
+
+        ok.setEnabled(false);
+        conn.applyChannelEdit(channel.id, changes, setPermissions, clearedPermissions,
+                error -> SwingUtilities.invokeLater(() -> finish(error, "Could not save the channel: ")));
+    }
+
+    /** Closes the dialog, or reports why the server would not have it and lets the user retry. */
+    private void finish(String error, String errorPrefix) {
+        if (error == null) {
+            dispose();
+            return;
+        }
+        ok.setEnabled(true);
+        JOptionPane.showMessageDialog(this, errorPrefix + error, "Error", JOptionPane.ERROR_MESSAGE);
+    }
+}

ts3-client/swing/src/main/java/com/ts3client/ui/ChannelMenu.java

@@ -1,6 +1,7 @@
 package com.ts3client.ui;
 
 import com.ts3client.net.ChannelNode;
+import com.ts3client.net.ChannelSettings;
 
 import javax.swing.JMenuItem;
 import javax.swing.JPopupMenu;
@@ -20,6 +21,18 @@ final class ChannelMenu {
         join.addActionListener(a -> actions.joinChannel(channel.id));
         menu.add(join);
         menu.addSeparator();
+        // Both start out temporary: a channel made from another channel's menu is
+        // usually a throwaway one, and a permanent channel is a deliberate choice.
+        JMenuItem create = new JMenuItem("Create Channel", Icons.of("CHANNEL_CREATE"));
+        create.addActionListener(a -> actions.createChannel(null, ChannelSettings.Type.TEMPORARY));
+        menu.add(create);
+        JMenuItem createSub = new JMenuItem("Create Sub-Channel", Icons.of("CHANNEL_CREATE_SUB"));
+        createSub.addActionListener(a -> actions.createChannel(channel, ChannelSettings.Type.TEMPORARY));
+        menu.add(createSub);
+        JMenuItem edit = new JMenuItem("Edit Channel", Icons.of("CHANNEL_EDIT"));
+        edit.addActionListener(a -> actions.editChannel(channel));
+        menu.add(edit);
+        menu.addSeparator();
         addSubscriptionItems(menu, channel, actions);
         JMenuItem files = new JMenuItem("Browse files", Icons.of("FILETRANSFER"));
         files.addActionListener(a -> actions.browseFiles(channel));

ts3-client/swing/src/main/java/com/ts3client/ui/ChannelPermissionsPanel.java

@@ -0,0 +1,148 @@
+package com.ts3client.ui;
+
+import javax.swing.BorderFactory;
+import javax.swing.Box;
+import javax.swing.BoxLayout;
+import javax.swing.JLabel;
+import javax.swing.JPanel;
+import javax.swing.JSpinner;
+import javax.swing.SpinnerNumberModel;
+import java.awt.Color;
+import java.awt.GridBagConstraints;
+import java.awt.GridBagLayout;
+import java.awt.Insets;
+import java.util.ArrayList;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * The channel editor's "Permissions" tab: the needed-power permissions set on the channel
+ * itself, which is the subset of channel permissions TeamSpeak surfaces here.
+ *
+ * <p>These are not channel properties but permissions, so they are read with
+ * {@code channelpermlist} and written with {@code channeladdperm}. A power left at zero is
+ * not a permission the channel carries: clearing a spinner back to zero removes the
+ * permission again so the channel inherits it, which is how the official client behaves.
+ */
+final class ChannelPermissionsPanel extends JPanel {
+
+    /** The regular powers, in the order the official dialog lists them. */
+    private static final String[][] REGULAR = {
+            {"i_channel_needed_join_power", "Join:"},
+            {"i_channel_needed_subscribe_power", "Subscribe:"},
+            {"i_channel_needed_description_view_power", "Desc. View:"},
+            {"i_channel_needed_modify_power", "Modify:"},
+            {"i_channel_needed_delete_power", "Delete:"}};
+
+    private static final String[][] FILE_TRANSFER = {
+            {"i_ft_needed_file_browse_power", "Browse:"},
+            {"i_ft_needed_file_upload_power", "Upload:"},
+            {"i_ft_needed_file_download_power", "Download:"},
+            {"i_ft_needed_file_rename_power", "Rename:"},
+            {"i_ft_needed_directory_create_power", "Dir. Create:"}};
+
+    private final Map<String, JSpinner> spinners = new LinkedHashMap<>();
+    /** The values the server reported, to tell an edited power from an untouched one. */
+    private final Map<String, Integer> original = new LinkedHashMap<>();
+    private final JLabel status = new JLabel(" ");
+
+    ChannelPermissionsPanel() {
+        setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));
+        setBorder(BorderFactory.createEmptyBorder(8, 8, 8, 8));
+
+        JPanel groups = new JPanel();
+        groups.setLayout(new BoxLayout(groups, BoxLayout.X_AXIS));
+        groups.add(group("Regular Needed Powers", REGULAR));
+        groups.add(Box.createHorizontalStrut(8));
+        groups.add(group("File Transfer Needed Powers", FILE_TRANSFER));
+        groups.setAlignmentX(0f);
+        add(groups);
+
+        status.setAlignmentX(0f);
+        status.setBorder(BorderFactory.createEmptyBorder(6, 2, 0, 2));
+        add(status);
+        add(Box.createVerticalGlue());
+        setEditable(false);
+    }
+
+    /** Fills the spinners from a {@code channelpermlist} result and enables editing. */
+    void read(Map<String, Integer> permissions) {
+        original.clear();
+        for (Map.Entry<String, JSpinner> entry : spinners.entrySet()) {
+            int value = permissions.getOrDefault(entry.getKey(), 0);
+            original.put(entry.getKey(), value);
+            entry.getValue().setValue(value);
+        }
+        setEditable(true);
+        setStatus(" ", false);
+    }
+
+    /** Greys the tab out with a reason, e.g. when the server refuses to show the permissions. */
+    void showUnavailable(String message) {
+        setEditable(false);
+        setStatus(message, true);
+    }
+
+    /** The permissions whose power was changed to a non-zero value. */
+    Map<String, Integer> changed() {
+        Map<String, Integer> changed = new LinkedHashMap<>();
+        for (Map.Entry<String, JSpinner> entry : spinners.entrySet()) {
+            int value = (Integer) entry.getValue().getValue();
+            if (value != 0 && value != original.getOrDefault(entry.getKey(), 0)) {
+                changed.put(entry.getKey(), value);
+            }
+        }
+        return changed;
+    }
+
+    /** The permissions cleared back to zero, which are removed from the channel. */
+    List<String> cleared() {
+        List<String> cleared = new ArrayList<>();
+        for (Map.Entry<String, JSpinner> entry : spinners.entrySet()) {
+            int value = (Integer) entry.getValue().getValue();
+            if (value == 0 && original.getOrDefault(entry.getKey(), 0) != 0) cleared.add(entry.getKey());
+        }
+        return cleared;
+    }
+
+    void setStatus(String message, boolean error) {
+        status.setText(message == null || message.isEmpty() ? " " : message);
+        status.setForeground(error ? Color.RED.darker() : Theme.chatSystem());
+    }
+
+    private void setEditable(boolean editable) {
+        for (JSpinner spinner : spinners.values()) spinner.setEnabled(editable);
+    }
+
+    private JPanel group(String title, String[][] permissions) {
+        JPanel panel = new JPanel(new GridBagLayout());
+        panel.setBorder(BorderFactory.createTitledBorder(title));
+        GridBagConstraints c = new GridBagConstraints();
+        c.insets = new Insets(3, 4, 3, 4);
+        c.anchor = GridBagConstraints.WEST;
+        c.fill = GridBagConstraints.HORIZONTAL;
+        int row = 0;
+        for (String[] permission : permissions) {
+            JSpinner spinner = Spinners.compact(new JSpinner(new SpinnerNumberModel(0, 0, 9999, 1)));
+            spinners.put(permission[0], spinner);
+            c.gridx = 0;
+            c.gridy = row;
+            c.weightx = 0;
+            panel.add(new JLabel(permission[1]), c);
+            c.gridx = 1;
+            c.weightx = 1;
+            c.fill = GridBagConstraints.NONE;
+            panel.add(spinner, c);
+            c.fill = GridBagConstraints.HORIZONTAL;
+            row++;
+        }
+        // Keeps the rows at the top of the group instead of centred in whatever height
+        // the tab happens to give it.
+        c.gridx = 0;
+        c.gridy = row;
+        c.weighty = 1;
+        panel.add(Box.createGlue(), c);
+        return panel;
+    }
+}

ts3-client/swing/src/main/java/com/ts3client/ui/ChannelStandardPanel.java

@@ -0,0 +1,195 @@
+package com.ts3client.ui;
+
+import com.ts3client.net.ChannelNode;
+import com.ts3client.net.ChannelSettings;
+
+import javax.swing.BorderFactory;
+import javax.swing.Box;
+import javax.swing.BoxLayout;
+import javax.swing.ButtonGroup;
+import javax.swing.DefaultComboBoxModel;
+import javax.swing.JCheckBox;
+import javax.swing.JComboBox;
+import javax.swing.JLabel;
+import javax.swing.JPanel;
+import javax.swing.JRadioButton;
+import javax.swing.JSeparator;
+import javax.swing.JSpinner;
+import javax.swing.SpinnerNumberModel;
+import java.awt.BorderLayout;
+import java.awt.Dimension;
+import java.awt.FlowLayout;
+import java.awt.GridBagConstraints;
+import java.awt.GridBagLayout;
+import java.awt.Insets;
+import java.util.List;
+import java.util.function.Consumer;
+
+/**
+ * The channel editor's "Standard" tab: how long the channel lives, whether it is the
+ * server's default one, where it sorts among its siblings, and its moderation setting.
+ */
+final class ChannelStandardPanel extends JPanel implements ChannelDialog.Tab {
+
+    private final JRadioButton temporary = new JRadioButton("Temporary");
+    private final JRadioButton semiPermanent = new JRadioButton("Semi-Permanent");
+    private final JRadioButton permanent = new JRadioButton("Permanent");
+    private final JCheckBox defaultChannel = new JCheckBox("Default Channel");
+    private final JComboBox<SortEntry> sortAfter = new JComboBox<>();
+    private final JSpinner talkPower = new JSpinner(new SpinnerNumberModel(0, 0, 9999, 1));
+
+    private Consumer<ChannelSettings.Type> typeListener;
+
+    /**
+     * @param siblings the channels this one shares a parent with, in tree order and
+     *                 excluding the channel being edited
+     */
+    ChannelStandardPanel(List<ChannelNode> siblings) {
+        super(new BorderLayout(8, 8));
+        setBorder(BorderFactory.createEmptyBorder(8, 8, 8, 8));
+
+        temporary.setToolTipText("Channel will be deleted when the last user left.");
+        semiPermanent.setToolTipText("Channel exists until server is restarted.");
+        permanent.setToolTipText("Channel will exist until manually deleted.");
+        ButtonGroup types = new ButtonGroup();
+        types.add(temporary);
+        types.add(semiPermanent);
+        types.add(permanent);
+        for (JRadioButton radio : new JRadioButton[]{temporary, semiPermanent, permanent}) {
+            radio.addActionListener(a -> fireTypeChanged());
+        }
+
+        defaultChannel.setToolTipText("<html>The default channel is the place where new clients join on login."
+                + "<br>There can be only one default channel for the whole server.</html>");
+
+        DefaultComboBoxModel<SortEntry> order = new DefaultComboBoxModel<>();
+        order.addElement(new SortEntry(0, "(first)"));
+        for (ChannelNode sibling : siblings) order.addElement(new SortEntry(sibling.id, sibling.name));
+        sortAfter.setModel(order);
+        sortAfter.setToolTipText("Channel will be sorted below this channel.");
+        sortAfter.setPreferredSize(new Dimension(200, sortAfter.getPreferredSize().height));
+        Spinners.compact(talkPower);
+
+        add(typeBox(), BorderLayout.WEST);
+        add(rightColumn(), BorderLayout.CENTER);
+    }
+
+    /** Notified whenever the channel type changes, so the delete delay can follow it. */
+    void onTypeChanged(Consumer<ChannelSettings.Type> listener) {
+        this.typeListener = listener;
+    }
+
+    @Override
+    public void read(ChannelSettings settings) {
+        switch (settings.type) {
+            case TEMPORARY:
+                temporary.setSelected(true);
+                break;
+            case SEMI_PERMANENT:
+                semiPermanent.setSelected(true);
+                break;
+            default:
+                permanent.setSelected(true);
+                break;
+        }
+        defaultChannel.setSelected(settings.defaultChannel);
+        // The default channel cannot simply stop being one; another has to take over.
+        defaultChannel.setEnabled(!settings.defaultChannel);
+        select(settings.order);
+        talkPower.setValue(settings.neededTalkPower);
+        fireTypeChanged();
+    }
+
+    @Override
+    public void write(ChannelSettings settings) {
+        settings.type = selectedType();
+        settings.defaultChannel = defaultChannel.isSelected();
+        SortEntry entry = (SortEntry) sortAfter.getSelectedItem();
+        settings.order = entry == null ? 0 : entry.channelId;
+        settings.neededTalkPower = (Integer) talkPower.getValue();
+    }
+
+    private ChannelSettings.Type selectedType() {
+        if (temporary.isSelected()) return ChannelSettings.Type.TEMPORARY;
+        if (semiPermanent.isSelected()) return ChannelSettings.Type.SEMI_PERMANENT;
+        return ChannelSettings.Type.PERMANENT;
+    }
+
+    private void fireTypeChanged() {
+        if (typeListener != null) typeListener.accept(selectedType());
+    }
+
+    private void select(int channelId) {
+        for (int i = 0; i < sortAfter.getItemCount(); i++) {
+            if (sortAfter.getItemAt(i).channelId == channelId) {
+                sortAfter.setSelectedIndex(i);
+                return;
+            }
+        }
+        sortAfter.setSelectedIndex(0);
+    }
+
+    private JPanel typeBox() {
+        JPanel box = new JPanel();
+        box.setLayout(new BoxLayout(box, BoxLayout.Y_AXIS));
+        box.setBorder(BorderFactory.createTitledBorder("Channel Type"));
+        for (JRadioButton radio : new JRadioButton[]{temporary, semiPermanent, permanent}) {
+            radio.setAlignmentX(0f);
+            box.add(radio);
+        }
+        JSeparator line = new JSeparator();
+        line.setAlignmentX(0f);
+        line.setMaximumSize(new Dimension(Integer.MAX_VALUE, 8));
+        box.add(Box.createVerticalStrut(4));
+        box.add(line);
+        box.add(Box.createVerticalStrut(4));
+        defaultChannel.setAlignmentX(0f);
+        box.add(defaultChannel);
+        box.add(Box.createVerticalGlue());
+        return box;
+    }
+
+    private JPanel rightColumn() {
+        JPanel sort = new JPanel(new BorderLayout());
+        sort.setBorder(BorderFactory.createTitledBorder("Sort This Channel After:"));
+        sort.add(sortAfter, BorderLayout.CENTER);
+
+        JPanel moderation = new JPanel(new FlowLayout(FlowLayout.LEFT, 6, 2));
+        moderation.setBorder(BorderFactory.createTitledBorder("Moderation"));
+        JLabel label = new JLabel("Needed Talk Power:");
+        label.setToolTipText("Talk Power required to speak in this channel.");
+        moderation.add(label);
+        moderation.add(talkPower);
+
+        // Both groups keep their natural height; the filler below soaks up the rest, so
+        // they sit at the top instead of stretching over the whole tab.
+        JPanel column = new JPanel(new GridBagLayout());
+        GridBagConstraints c = new GridBagConstraints();
+        c.gridx = 0;
+        c.fill = GridBagConstraints.HORIZONTAL;
+        c.weightx = 1;
+        c.insets = new Insets(0, 0, 6, 0);
+        column.add(sort, c);
+        column.add(moderation, c);
+        c.weighty = 1;
+        c.fill = GridBagConstraints.BOTH;
+        column.add(Box.createGlue(), c);
+        return column;
+    }
+
+    /** One entry of the "sort after" list: a sibling channel, or the top of the list. */
+    private static final class SortEntry {
+        final int channelId;
+        final String label;
+
+        SortEntry(int channelId, String label) {
+            this.channelId = channelId;
+            this.label = label;
+        }
+
+        @Override
+        public String toString() {
+            return label;
+        }
+    }
+}

ts3-client/swing/src/main/java/com/ts3client/ui/ChatPanel.java

@@ -4,6 +4,7 @@ import com.ts3client.text.BBCode;
 import com.ts3client.text.TsLink;
 
 import javax.swing.BorderFactory;
+import javax.swing.Icon;
 import javax.swing.JButton;
 import javax.swing.JEditorPane;
 import javax.swing.JLabel;
@@ -15,8 +16,6 @@ import javax.swing.SwingUtilities;
 import javax.swing.event.HyperlinkEvent;
 import javax.swing.text.BadLocationException;
 import javax.swing.text.html.HTMLDocument;
-import javax.swing.text.html.HTMLEditorKit;
-import javax.swing.text.html.StyleSheet;
 import java.awt.BorderLayout;
 import java.awt.Component;
 import java.awt.Cursor;
@@ -25,6 +24,7 @@ import java.awt.FlowLayout;
 import java.awt.Point;
 import java.awt.event.MouseAdapter;
 import java.awt.event.MouseEvent;
+import java.awt.event.MouseWheelEvent;
 import java.io.IOException;
 import java.text.SimpleDateFormat;
 import java.util.Date;
@@ -62,6 +62,10 @@ public final class ChatPanel extends JPanel {
     private final Tab channelTab = new Tab(Target.CHANNEL, 0, "Channel");
     /** Private chats keyed by the peer's client id. */
     private final Map<Integer, Tab> privateTabs = new LinkedHashMap<>();
+    /** Static-content tabs (e.g. a moved-out description), keyed by caller-chosen id. */
+    private final Map<String, Tab> noteTabs = new LinkedHashMap<>();
+
+    private final TabDragReorder dragReorder = new TabDragReorder(tabs, this::moveTab);
 
     private SendHandler sendHandler;
     private LinkHandler linkHandler;
@@ -69,7 +73,8 @@ public final class ChatPanel extends JPanel {
     public ChatPanel() {
         super(new BorderLayout());
 
-        tabs.setFont(Theme.UI_FONT);
+        tabs.setFont(Theme.uiFont());
+        tabs.setTabLayoutPolicy(JTabbedPane.SCROLL_TAB_LAYOUT);
         addTab(serverTab, false);
         addTab(channelTab, false);
         tabs.setSelectedIndex(0);
@@ -77,6 +82,8 @@ public final class ChatPanel extends JPanel {
             Tab t = selectedTab();
             if (t != null) t.setUnread(false);
         });
+        tabs.addMouseWheelListener(this::onWheel);
+        dragReorder.attach(tabs);
         add(tabs, BorderLayout.CENTER);
 
         JPanel bottom = new JPanel(new BorderLayout(4, 0));
@@ -130,6 +137,40 @@ public final class ChatPanel extends JPanel {
         });
     }
 
+    /** Drops every static-content tab (moved-out descriptions), e.g. after disconnecting. */
+    public void closeNoteTabs() {
+        edt(() -> {
+            for (Tab t : noteTabs.values()) tabs.remove(t.scroll);
+            noteTabs.clear();
+        });
+    }
+
+    /** Closes a single static-content tab by its key, if open; does not run its {@code onClose}. */
+    public void closeNoteTab(String key) {
+        edt(() -> {
+            Tab tab = noteTabs.remove(key);
+            if (tab != null) tabs.remove(tab.scroll);
+        });
+    }
+
+    /**
+     * Opens (or replaces the content of, and focuses) a static-content tab, e.g. a
+     * channel/client description moved out of the info panel. {@code onClose} runs
+     * when the tab is closed, so the caller can un-hide the description again.
+     */
+    public void openDescriptionTab(String key, Icon icon, String title, String htmlBody, Runnable onClose) {
+        edt(() -> {
+            Tab tab = noteTabs.get(key);
+            if (tab == null) {
+                tab = new Tab(key, icon, title, onClose);
+                noteTabs.put(key, tab);
+                addTab(tab, true);
+            }
+            tab.setStaticContent(htmlBody);
+            tabs.setSelectedComponent(tab.scroll);
+        });
+    }
+
     private void fireSend() {
         String text = input.getText().trim();
         if (text.isEmpty() || sendHandler == null) return;
@@ -143,10 +184,20 @@ public final class ChatPanel extends JPanel {
 
     /** System notices always land in the server tab. */
     public void appendSystem(String text) {
-        edt(() -> serverTab.appendLine("<span style=\"color:#8A8A8A\">" + stamp()
+        edt(() -> serverTab.appendLine("<span class=\"muted\">" + stamp()
                 + BBCode.escape(text) + "</span>"));
     }
 
+    /**
+     * Server-side events (client joins/leaves/moves, group changes, channel edits, …).
+     * These lines name clients and channels with TeamSpeak's own links, which stay
+     * clickable here — everything else in them is literal text.
+     */
+    public void appendServerLog(String text) {
+        edt(() -> serverTab.appendLine("<span class=\"event\">" + stamp()
+                + BBCode.linksToHtml(text) + "</span>"));
+    }
+
     public void appendServerMessage(int fromId, String from, String text) {
         edt(() -> serverTab.appendMessage(fromId, from, text));
     }
@@ -180,10 +231,40 @@ public final class ChatPanel extends JPanel {
     }
 
     private void closeTab(Tab tab) {
-        privateTabs.remove(tab.clientId);
+        if (tab.noteKey != null) {
+            noteTabs.remove(tab.noteKey);
+            if (tab.onClose != null) tab.onClose.run();
+        } else {
+            privateTabs.remove(tab.clientId);
+        }
         tabs.remove(tab.scroll);
     }
 
+    /** Drags a tab from one position to another, keeping the current selection on screen. */
+    private void moveTab(int from, int to) {
+        if (from < 0 || to < 0 || from >= tabs.getTabCount() || to >= tabs.getTabCount() || from == to) return;
+        Component content = tabs.getComponentAt(from);
+        String title = tabs.getTitleAt(from);
+        Icon icon = tabs.getIconAt(from);
+        String tip = tabs.getToolTipTextAt(from);
+        Component header = tabs.getTabComponentAt(from);
+        boolean wasSelected = tabs.getSelectedIndex() == from;
+        tabs.removeTabAt(from);
+        tabs.insertTab(title, icon, content, tip, to);
+        tabs.setTabComponentAt(to, header);
+        if (wasSelected) tabs.setSelectedIndex(to);
+    }
+
+    private void onWheel(MouseWheelEvent e) {
+        Component content = tabs.getSelectedComponent();
+        if (content != null && content.getBounds().contains(e.getPoint())) return;
+        int steps = e.getWheelRotation();
+        if (steps == 0) return;
+        int target = Math.max(0, Math.min(tabs.getTabCount() - 1, tabs.getSelectedIndex() + steps));
+        if (target != tabs.getSelectedIndex()) tabs.setSelectedIndex(target);
+        e.consume();
+    }
+
     private Tab selectedTab() {
         Component c = tabs.getSelectedComponent();
         if (c == serverTab.scroll) return serverTab;
@@ -205,40 +286,39 @@ public final class ChatPanel extends JPanel {
         final Target target;
         final int clientId;
         final String title;
-        final JEditorPane log = new JEditorPane();
+        final JEditorPane log = HtmlStyles.pane("font-family:sans-serif; font-size:11px; margin:4px 6px;");
         final JScrollPane scroll;
-        private final HTMLDocument doc;
+        /** Set for a static-content tab (e.g. a moved-out description); null for a conversation. */
+        final String noteKey;
+        final Runnable onClose;
+        private final Icon icon;
         private JLabel titleLabel;
 
         Tab(Target target, int clientId, String title) {
+            this(target, clientId, title, null, null, null);
+        }
+
+        /** A static-content tab: no send target, closing it runs {@code onClose}. */
+        Tab(String noteKey, Icon icon, String title, Runnable onClose) {
+            this(null, 0, title, icon, noteKey, onClose);
+        }
+
+        private Tab(Target target, int clientId, String title, Icon icon, String noteKey, Runnable onClose) {
             this.target = target;
             this.clientId = clientId;
             this.title = title;
+            this.icon = icon;
+            this.noteKey = noteKey;
+            this.onClose = onClose;
 
-            HTMLEditorKit kit = new HTMLEditorKit();
-            StyleSheet css = new StyleSheet();
-            css.addStyleSheet(kit.getStyleSheet());
-            css.addRule("body { font-family:sans-serif; font-size:11px; color:#202020; margin:4px 6px; }");
-            css.addRule("a { color:" + hex(Theme.CHAT_NAME) + "; text-decoration:none; }");
-            // Client references look exactly like a message author's name.
-            css.addRule("a." + BBCode.IDENTITY_LINK_CLASS
-                    + " { color:" + hex(Theme.CHAT_NAME) + "; font-weight:bold; text-decoration:none; }");
-            // External links are underlined so they can't be mistaken for an identity.
-            css.addRule("a." + BBCode.EXTERNAL_LINK_CLASS
-                    + " { color:" + hex(Theme.LINK) + "; text-decoration:underline; }");
-            kit.setStyleSheet(css);
-
-            log.setEditorKit(kit);
-            log.setEditable(false);
-            log.setBackground(Theme.CHAT_BG);
             log.setText("<html><body><div id=\"chatlog\"></div></body></html>");
-            doc = (HTMLDocument) log.getDocument();
             log.addHyperlinkListener(e -> {
                 if (e.getEventType() != HyperlinkEvent.EventType.ACTIVATED) return;
                 onLink(e.getDescription());
             });
 
             scroll = new JScrollPane(log);
+            HtmlStyles.fillViewport(log);
             scroll.setBorder(BorderFactory.createEmptyBorder());
         }
 
@@ -259,13 +339,15 @@ public final class ChatPanel extends JPanel {
         Component header(boolean closable) {
             JPanel p = new JPanel(new FlowLayout(FlowLayout.LEFT, 4, 0));
             p.setOpaque(false);
-            titleLabel = new JLabel(title);
+            titleLabel = new JLabel(title, icon, JLabel.LEADING);
-            titleLabel.setFont(Theme.UI_FONT);
+            titleLabel.setFont(Theme.uiFont());
             p.add(titleLabel);
+            dragReorder.attach(p);
+            dragReorder.attach(titleLabel);
             if (closable) {
                 JLabel close = new JLabel("×");
-                close.setFont(Theme.UI_BOLD);
+                close.setFont(Theme.uiBold());
-                close.setForeground(Theme.CHAT_SYSTEM);
+                close.setForeground(Theme.chatSystem());
                 close.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
                 close.setToolTipText("Close chat");
                 close.addMouseListener(new MouseAdapter() {
@@ -289,8 +371,8 @@ public final class ChatPanel extends JPanel {
 
         void setUnread(boolean unread) {
             if (titleLabel == null) return;
-            titleLabel.setFont(unread ? Theme.UI_BOLD : Theme.UI_FONT);
+            titleLabel.setFont(unread ? Theme.uiBold() : Theme.uiFont());
-            titleLabel.setForeground(unread ? Theme.ACCENT : null);
+            titleLabel.setForeground(unread ? Theme.accent() : null);
         }
 
         void appendMessage(int fromId, String from, String text) {
@@ -298,13 +380,20 @@ public final class ChatPanel extends JPanel {
             String sender = fromId > 0
                     ? "<a class=\"" + BBCode.IDENTITY_LINK_CLASS + "\" href=\""
                         + BBCode.escape(TsLink.clientHref(fromId, "", from)) + "\">" + name + "</a>"
-                    : "<b style=\"color:" + hex(Theme.CHAT_NAME) + "\">" + name + "</b>";
+                    : "<span class=\"name\">" + name + "</span>";
-            appendLine("<span style=\"color:#8A8A8A\">" + stamp() + "</span>"
+            appendLine("<span class=\"muted\">" + stamp() + "</span>"
                     + sender + ": " + BBCode.toHtml(text));
         }
 
+        /** Replaces the whole log with fixed content; used by static-content tabs. */
+        void setStaticContent(String html) {
+            log.setText("<html><body><div id=\"chatlog\">" + html + "</div></body></html>");
+            log.setCaretPosition(0);
+        }
+
         void appendLine(String html) {
             try {
+                HTMLDocument doc = (HTMLDocument) log.getDocument();
                 doc.insertBeforeEnd(doc.getElement("chatlog"), "<div>" + html + "</div>");
                 log.setCaretPosition(doc.getLength());
             } catch (BadLocationException | IOException ignored) {
@@ -312,8 +401,4 @@ public final class ChatPanel extends JPanel {
             if (tabs.getSelectedComponent() != scroll) setUnread(true);
         }
     }
-
-    private static String hex(java.awt.Color c) {
-        return String.format("#%06X", c.getRGB() & 0xFFFFFF);
-    }
 }

ts3-client/swing/src/main/java/com/ts3client/ui/ClientMenu.java

@@ -1,9 +1,15 @@
 package com.ts3client.ui;
 
+import com.ts3client.net.ChannelNode;
 import com.ts3client.net.ClientEntry;
+import com.ts3client.net.Group;
+import com.ts3client.net.ServerModel;
 
+import javax.swing.JCheckBoxMenuItem;
+import javax.swing.JMenu;
 import javax.swing.JMenuItem;
 import javax.swing.JPopupMenu;
+import java.util.List;
 
 /**
  * The context menu for a client, shared by the server tree and the clickable
@@ -14,7 +20,13 @@ final class ClientMenu {
     private ClientMenu() {
     }
 
-    static JPopupMenu build(ClientEntry client, boolean self, ServerTreePanel.Actions actions) {
+    /**
+     * @param fromTree whether this menu was opened from the server tree itself, as
+     *                 opposed to a client link elsewhere (chat log, etc.) — "Find
+     *                 Client in Channel Tree" is redundant in the former case.
+     */
+    static JPopupMenu build(ClientEntry client, boolean self, boolean fromTree, ServerModel model,
+                             GroupIcons groupIcons, ServerTreePanel.Actions actions) {
         JPopupMenu menu = new JPopupMenu();
         if (!self) {
             JMenuItem pm = new JMenuItem("Open text chat", Icons.of("PLAYER_CHAT"));
@@ -44,15 +56,117 @@ final class ClientMenu {
             menu.add(me);
         }
         menu.addSeparator();
+        menu.add(buildServerGroupMenu(client, model, groupIcons, actions));
+        menu.add(buildChannelGroupMenu(client, model, groupIcons, actions));
+        menu.addSeparator();
+        if (!fromTree) {
+            JMenuItem findInTree = new JMenuItem("Find Client in Channel Tree", Icons.of("CHANNEL_SWITCH"));
+            findInTree.setEnabled(isVisible(client, model));
+            findInTree.addActionListener(a -> actions.findClientInTree(client));
+            menu.add(findInTree);
+        }
+        JMenuItem description = new JMenuItem("Change Description", Icons.of("EDIT"));
+        description.addActionListener(a -> actions.changeClientDescription(client));
+        menu.add(description);
         JMenuItem info = new JMenuItem("Connection Info", Icons.of("INFO"));
         info.addActionListener(a -> actions.showConnectionInfo(client));
         menu.add(info);
         if (!self) {
             menu.addSeparator();
+            JMenuItem joinChannel = new JMenuItem("Join Channel of Client", Icons.of("CHANNEL_SWITCH"));
+            joinChannel.setEnabled(canJoinChannelOf(client, model));
+            joinChannel.addActionListener(a -> actions.joinChannel(client.channelId));
+            menu.add(joinChannel);
             JMenuItem moveHere = new JMenuItem("Move Client to own Channel", Icons.of("MOVE_CLIENT_TO_OWN_CHANNEL"));
             moveHere.addActionListener(a -> actions.moveClientToOwnChannel(client));
             menu.add(moveHere);
         }
         return menu;
     }
+
+    /**
+     * Whether the client's channel is actually rendered in the tree — it won't be if
+     * we're not subscribed to it (e.g. it needs more subscribe power than we have).
+     */
+    private static boolean isVisible(ClientEntry client, ServerModel model) {
+        ChannelNode channel = model.getChannel(client.channelId);
+        return channel != null && channel.subscribed;
+    }
+
+    /**
+     * Whether we can expect a join to succeed: the channel must be visible to us, and
+     * not already full. This can't account for a join-power permission requirement —
+     * unlike group membership, TS3 doesn't expose a channel's join-power threshold as
+     * a plain property, only as a permission resolved through channel/channel-group/
+     * server-group inheritance, which isn't something a regular client can query.
+     */
+    private static boolean canJoinChannelOf(ClientEntry client, ServerModel model) {
+        ChannelNode channel = model.getChannel(client.channelId);
+        if (channel == null || !channel.subscribed) return false;
+        return channel.maxClients < 0 || channel.clients.size() < channel.maxClients;
+    }
+
+    private static JMenu buildServerGroupMenu(ClientEntry client, ServerModel model, GroupIcons groupIcons,
+                                               ServerTreePanel.Actions actions) {
+        JMenu menu = new JMenu("Set Server Groups");
+        menu.setIcon(Icons.of("PERMISSIONS_SERVER_GROUPS"));
+        JMenuItem dialog = new JMenuItem("Server Groups Dialog...");
+        dialog.addActionListener(a -> actions.showServerGroupsDialog(client));
+        menu.add(dialog);
+        menu.addSeparator();
+
+        int addPower = model.selfPermissionValue("i_group_needed_member_add_power");
+        int removePower = model.selfPermissionValue("i_group_needed_member_remove_power");
+        for (Group g : model.allServerGroups()) {
+            boolean assigned = contains(client.serverGroupIds, g.id);
+            if (!canAssign(g, assigned, addPower, removePower)) continue;
+            JCheckBoxMenuItem item = new JCheckBoxMenuItem(g.name, groupIcons.iconOf(g));
+            item.setSelected(assigned);
+            item.addActionListener(a -> actions.setClientServerGroup(client, g, !assigned));
+            menu.add(item);
+        }
+        return menu;
+    }
+
+    private static JMenu buildChannelGroupMenu(ClientEntry client, ServerModel model, GroupIcons groupIcons,
+                                                ServerTreePanel.Actions actions) {
+        JMenu menu = new JMenu("Set Channel Group");
+        menu.setIcon(Icons.of("PERMISSIONS_CHANNEL_GROUPS"));
+        int addPower = model.selfPermissionValue("i_group_needed_member_add_power");
+        int removePower = model.selfPermissionValue("i_group_needed_member_remove_power");
+        int defaultGroupId = model.defaultChannelGroupId();
+        for (Group g : model.allChannelGroups()) {
+            if (g.id == defaultGroupId) continue;
+            boolean assigned = client.channelGroupId == g.id;
+            if (!canAssign(g, assigned, addPower, removePower)) continue;
+            JCheckBoxMenuItem item = new JCheckBoxMenuItem(g.name, groupIcons.iconOf(g));
+            item.setSelected(assigned);
+            item.addActionListener(a -> actions.setClientChannelGroup(client, g));
+            menu.add(item);
+        }
+        return menu;
+    }
+
+    /**
+     * Whether the local client has enough power to (un)assign this group: the add
+     * power always gates the checkbox, and the remove power additionally gates
+     * unassigning an already-held group. {@code -1} is TS3's "unlimited" sentinel on
+     * either side: an unlimited local power always passes, and a group that needs
+     * unlimited power can only be touched by a local client that has it.
+     */
+    static boolean canAssign(Group g, boolean assigned, int addPower, int removePower) {
+        return hasPower(g.neededMemberAddPower, addPower)
+                && (!assigned || hasPower(g.neededMemberRemovePower, removePower));
+    }
+
+    private static boolean hasPower(int needed, int own) {
+        if (own == -1) return true;
+        if (needed == -1) return false;
+        return own >= needed;
+    }
+
+    private static boolean contains(int[] ids, int id) {
+        for (int i : ids) if (i == id) return true;
+        return false;
+    }
 }

ts3-client/swing/src/main/java/com/ts3client/ui/ConnectionInfoDialog.java

@@ -63,7 +63,7 @@ public final class ConnectionInfoDialog extends JDialog {
         this.clientId = clientId;
 
         JPanel content = new JPanel(new BorderLayout(0, 10));
-        content.setBackground(Theme.WINDOW_BG);
+        content.setBackground(Theme.windowBg());
         content.setBorder(BorderFactory.createEmptyBorder(12, 14, 12, 14));
         content.add(buildSummary(), BorderLayout.NORTH);
         content.add(buildTabs(), BorderLayout.CENTER);
@@ -92,7 +92,7 @@ public final class ConnectionInfoDialog extends JDialog {
 
     private JPanel buildSummary() {
         JPanel grid = new JPanel(new GridBagLayout());
-        grid.setBackground(Theme.WINDOW_BG);
+        grid.setBackground(Theme.windowBg());
         int row = 0;
         addRow(grid, row++, "Address", addressValue);
         addRow(grid, row++, "Client version", versionValue);
@@ -106,8 +106,8 @@ public final class ConnectionInfoDialog extends JDialog {
 
     private JTabbedPane buildTabs() {
         JTabbedPane tabs = new JTabbedPane();
-        tabs.setFont(Theme.UI_FONT);
+        tabs.setFont(Theme.uiFont());
-        tabs.setBackground(Theme.WINDOW_BG);
+        tabs.setBackground(Theme.windowBg());
         tabs.addTab("Total", totalTab);
         tabs.addTab("Speech", speechTab);
         tabs.addTab("Keep Alive", keepAliveTab);
@@ -118,7 +118,7 @@ public final class ConnectionInfoDialog extends JDialog {
     private JPanel buildButtons() {
         JPanel bar = new JPanel();
         bar.setLayout(new BoxLayout(bar, BoxLayout.X_AXIS));
-        bar.setBackground(Theme.WINDOW_BG);
+        bar.setBackground(Theme.windowBg());
         bar.add(Box.createHorizontalGlue());
         JButton close = new JButton("Close");
         close.addActionListener(e -> dispose());
@@ -128,8 +128,8 @@ public final class ConnectionInfoDialog extends JDialog {
 
     private static JLabel value() {
         JLabel l = new JLabel("—");
-        l.setFont(Theme.UI_FONT);
+        l.setFont(Theme.uiFont());
-        l.setForeground(Theme.TREE_TEXT);
+        l.setForeground(Theme.treeText());
         return l;
     }
 
@@ -140,7 +140,7 @@ public final class ConnectionInfoDialog extends JDialog {
         lc.anchor = GridBagConstraints.WEST;
         lc.insets = new Insets(2, 0, 2, 16);
         JLabel key = new JLabel(label);
-        key.setFont(Theme.UI_FONT);
+        key.setFont(Theme.uiFont());
         key.setForeground(new Color(0x5A6B7B));
         grid.add(key, lc);
 
@@ -255,7 +255,7 @@ public final class ConnectionInfoDialog extends JDialog {
 
         KindTab() {
             super(new GridBagLayout());
-            setBackground(Theme.WINDOW_BG);
+            setBackground(Theme.windowBg());
             setBorder(BorderFactory.createEmptyBorder(10, 12, 10, 12));
             int row = 0;
             addRow(this, row++, "Packet loss", packetLoss);

ts3-client/swing/src/main/java/com/ts3client/ui/DescriptionEditorDialog.java

@@ -0,0 +1,171 @@
+package com.ts3client.ui;
+
+import com.ts3client.text.BBCode;
+
+import javax.swing.BorderFactory;
+import javax.swing.Box;
+import javax.swing.JButton;
+import javax.swing.JColorChooser;
+import javax.swing.JDialog;
+import javax.swing.JEditorPane;
+import javax.swing.JLabel;
+import javax.swing.JPanel;
+import javax.swing.JScrollPane;
+import javax.swing.JTextArea;
+import javax.swing.JToggleButton;
+import javax.swing.JToolBar;
+import java.awt.BorderLayout;
+import java.awt.CardLayout;
+import java.awt.Color;
+import java.awt.Dimension;
+import java.awt.Font;
+import java.awt.Window;
+
+/**
+ * The description editor TeamSpeak tears off the channel dialog: the raw BBCode plus
+ * the handful of formatting buttons it offers (bold, italic, underline, colour) and a
+ * preview that renders the text the way the info panel will.
+ *
+ * <p>Formatting works on the selection, wrapping it in the tag pair; with nothing
+ * selected the pair is inserted and the caret placed between the two halves, so typing
+ * continues inside it.
+ */
+final class DescriptionEditorDialog extends JDialog {
+
+    private static final String EDIT_CARD = "edit";
+    private static final String PREVIEW_CARD = "preview";
+
+    private final JTextArea area = new JTextArea();
+    private final JEditorPane preview = new JEditorPane("text/html", "");
+    private final CardLayout cards = new CardLayout();
+    private final JPanel body = new JPanel(cards);
+    private final JToggleButton previewButton = new JToggleButton("Preview");
+    private boolean accepted;
+
+    DescriptionEditorDialog(Window owner, String description) {
+        super(owner, "Channel Description", ModalityType.APPLICATION_MODAL);
+        area.setText(description);
+        area.setLineWrap(true);
+        area.setWrapStyleWord(true);
+        area.setFont(new Font(Font.MONOSPACED, Font.PLAIN, 12));
+        area.setCaretPosition(0);
+
+        preview.setEditable(false);
+        preview.setBackground(Theme.chatBg());
+        preview.setBorder(BorderFactory.createEmptyBorder(6, 8, 6, 8));
+
+        body.add(new JScrollPane(area), EDIT_CARD);
+        body.add(new JScrollPane(preview), PREVIEW_CARD);
+
+        JLabel hint = new JLabel("Press Button to \"Preview\" the changes in channel info.");
+        hint.setForeground(Theme.chatSystem());
+        hint.setBorder(BorderFactory.createEmptyBorder(4, 6, 0, 6));
+
+        getContentPane().setLayout(new BorderLayout());
+        getContentPane().add(buildToolbar(), BorderLayout.NORTH);
+        getContentPane().add(body, BorderLayout.CENTER);
+        JPanel south = new JPanel(new BorderLayout());
+        south.add(hint, BorderLayout.NORTH);
+        south.add(buildButtons(), BorderLayout.SOUTH);
+        getContentPane().add(south, BorderLayout.SOUTH);
+
+        Dialogs.closeOnEscape(this);
+        setDefaultCloseOperation(DISPOSE_ON_CLOSE);
+        setSize(new Dimension(520, 380));
+        setMinimumSize(new Dimension(360, 260));
+        setLocationRelativeTo(owner);
+    }
+
+    /** @return whether the user confirmed; {@link #getDescription()} then holds the new text */
+    boolean isAccepted() {
+        return accepted;
+    }
+
+    String getDescription() {
+        return area.getText();
+    }
+
+    private JToolBar buildToolbar() {
+        JToolBar bar = new JToolBar();
+        bar.setFloatable(false);
+        bar.add(tagButton("B", "Bold", Font.BOLD, "[b]", "[/b]"));
+        bar.add(tagButton("I", "Italic", Font.ITALIC, "[i]", "[/i]"));
+        JButton underline = tagButton("<html><u>U</u></html>", "Underline", Font.PLAIN, "[u]", "[/u]");
+        bar.add(underline);
+        JButton color = new JButton("Color");
+        color.setToolTipText("Color");
+        color.addActionListener(a -> chooseColor());
+        bar.add(square(color));
+        bar.add(Box.createHorizontalGlue());
+        previewButton.setToolTipText("Show the description as the info panel renders it");
+        previewButton.addActionListener(a -> showPreview(previewButton.isSelected()));
+        previewButton.setMaximumSize(previewButton.getPreferredSize());
+        bar.add(previewButton);
+        return bar;
+    }
+
+    private JPanel buildButtons() {
+        JButton ok = new JButton("OK");
+        JButton cancel = new JButton("Cancel");
+        ok.addActionListener(a -> {
+            accepted = true;
+            dispose();
+        });
+        cancel.addActionListener(a -> dispose());
+        JPanel panel = new JPanel(new BorderLayout());
+        JPanel right = new JPanel();
+        right.add(ok);
+        right.add(cancel);
+        panel.add(right, BorderLayout.EAST);
+        getRootPane().setDefaultButton(ok);
+        return panel;
+    }
+
+    private JButton tagButton(String text, String tip, int style, String open, String close) {
+        JButton button = new JButton(text);
+        button.setToolTipText(tip);
+        button.setFont(button.getFont().deriveFont(style));
+        button.addActionListener(a -> wrapSelection(open, close));
+        return square(button);
+    }
+
+    /**
+     * Pins a toolbar button to its natural size: the tool bar lays its children out along a
+     * box, which would otherwise let one of them soak up all the free width.
+     */
+    private static JButton square(JButton button) {
+        Dimension size = new Dimension(Math.max(28, button.getPreferredSize().width),
+                button.getPreferredSize().height);
+        button.setPreferredSize(size);
+        button.setMaximumSize(size);
+        return button;
+    }
+
+    private void chooseColor() {
+        Color chosen = JColorChooser.showDialog(this, "Color", Color.BLACK);
+        if (chosen == null) return;
+        wrapSelection(String.format("[color=#%02x%02x%02x]",
+                chosen.getRed(), chosen.getGreen(), chosen.getBlue()), "[/color]");
+    }
+
+    /** Wraps the selection (or the caret) in a BBCode tag pair and returns focus to the text. */
+    private void wrapSelection(String open, String close) {
+        if (previewButton.isSelected()) showPreview(false);
+        int start = area.getSelectionStart();
+        int end = area.getSelectionEnd();
+        String selected = area.getSelectedText();
+        area.replaceRange(open + (selected == null ? "" : selected) + close, start, end);
+        area.setCaretPosition(start + open.length() + (selected == null ? 0 : selected.length()));
+        area.requestFocusInWindow();
+    }
+
+    private void showPreview(boolean on) {
+        previewButton.setSelected(on);
+        if (on) {
+            preview.setText("<html><body style=\"font-family:sans-serif;font-size:9pt\">"
+                    + BBCode.toHtml(area.getText()) + "</body></html>");
+            preview.setCaretPosition(0);
+        }
+        cards.show(body, on ? PREVIEW_CARD : EDIT_CARD);
+    }
+}

ts3-client/swing/src/main/java/com/ts3client/ui/DesignPanel.java

@@ -26,13 +26,14 @@ import java.awt.Insets;
 import java.io.File;
 
 /**
- * Options page for icon packs: which pack the user interface is drawn with, where
+ * Options page for how the client looks: the light or dark look-and-feel, and the icon
- * to look for more of them, and a viewer showing everything the pack contains.
+ * pack the user interface is drawn with — where to look for more of them, and a viewer
+ * showing everything the active pack contains.
  *
- * <p>Picking a pack applies it right away so the change can be seen in the window
+ * <p>Both apply right away so the change can be seen in the window behind the dialog;
- * behind the dialog; cancelling puts the previous one back.
+ * cancelling puts the previous ones back.
  */
-final class IconPackPanel extends JPanel {
+final class DesignPanel extends JPanel {
 
     /** Size of the tiles in the icon viewer. */
     private static final int PREVIEW_SIZE = 32;
@@ -44,18 +45,22 @@ final class IconPackPanel extends JPanel {
     private final Settings settings;
     private final String originalPackId;
     private final String originalPackDir;
+    private final Settings.Appearance originalAppearance;
 
+    private final JComboBox<Settings.Appearance> appearanceCombo =
+            new JComboBox<>(Settings.Appearance.values());
     private final JComboBox<Object> packCombo = new JComboBox<>();
     private final JLabel packInfo = new JLabel();
     private final JTextField packDirField;
     private final DefaultListModel<String> previewModel = new DefaultListModel<>();
     private final JList<String> preview = new JList<>(previewModel);
 
-    IconPackPanel(Settings settings) {
+    DesignPanel(Settings settings) {
         super(new BorderLayout(0, 8));
         this.settings = settings;
         this.originalPackId = settings.iconPack;
         this.originalPackDir = settings.iconPackDir;
+        this.originalAppearance = settings.appearance;
         this.packDirField = new JTextField(settings.iconPackDir, 18);
 
         setBorder(BorderFactory.createEmptyBorder(12, 12, 12, 12));
@@ -65,18 +70,23 @@ final class IconPackPanel extends JPanel {
         reloadPacks();
     }
 
-    /** Copies the chosen pack into the settings; the caller saves them. */
+    /** Copies the chosen appearance and pack into the settings; the caller saves them. */
     void apply() {
+        settings.appearance = selectedAppearance();
         settings.iconPackDir = packDirField.getText().trim();
         Object selected = packCombo.getSelectedItem();
         settings.iconPack = selected instanceof IconPack pack ? pack.id() : "";
     }
 
-    /** Puts back the pack the dialog started with, for a cancelled edit. */
+    /** Puts back the appearance and pack the dialog started with, for a cancelled edit. */
     void revert() {
         settings.iconPack = originalPackId;
         settings.iconPackDir = originalPackDir;
         IconTheme.get().reload(settings);
+        if (settings.appearance != originalAppearance) {
+            settings.appearance = originalAppearance;
+            LookAndFeelManager.switchTo(originalAppearance);
+        }
     }
 
     // ---- layout ----
@@ -100,7 +110,21 @@ final class IconPackPanel extends JPanel {
             }
         });
 
+        appearanceCombo.setToolTipText("Light or dark window colours");
+        appearanceCombo.setSelectedItem(settings.appearance);
+        appearanceCombo.setRenderer(new DefaultListCellRenderer() {
+            @Override
+            public Component getListCellRendererComponent(JList<?> list, Object value, int index,
+                                                          boolean selected, boolean focus) {
+                super.getListCellRendererComponent(list, value, index, selected, focus);
+                setText(value == Settings.Appearance.DARK ? "Dark" : "Light");
+                return this;
+            }
+        });
+        appearanceCombo.addActionListener(e -> onAppearanceSelected());
+
         int row = 0;
+        addRow(p, c, row++, new JLabel("Theme:"), appearanceCombo);
         addRow(p, c, row++, new JLabel("Icon pack:"), packCombo);
         c.gridx = 1;
         c.gridy = row++;
@@ -159,6 +183,18 @@ final class IconPackPanel extends JPanel {
         onPackSelected();
     }
 
+    private Settings.Appearance selectedAppearance() {
+        Object selected = appearanceCombo.getSelectedItem();
+        return selected instanceof Settings.Appearance a ? a : Settings.Appearance.LIGHT;
+    }
+
+    private void onAppearanceSelected() {
+        Settings.Appearance chosen = selectedAppearance();
+        if (chosen == settings.appearance) return;
+        settings.appearance = chosen;
+        LookAndFeelManager.switchTo(chosen);
+    }
+
     private void onPackSelected() {
         Object selected = packCombo.getSelectedItem();
         IconPack pack = selected instanceof IconPack p ? p : null;

ts3-client/swing/src/main/java/com/ts3client/ui/DevicesPanel.java

@@ -0,0 +1,160 @@
+package com.ts3client.ui;
+
+import com.ts3client.audio.VoiceInput;
+import com.ts3client.audio.VoiceOutput;
+import com.ts3client.audio.desktop.AudioDevices;
+import com.ts3client.config.Settings;
+
+import javax.swing.Box;
+import javax.swing.JCheckBox;
+import javax.swing.JComboBox;
+import javax.swing.JLabel;
+import javax.swing.JSlider;
+import java.awt.GridBagConstraints;
+import java.awt.Insets;
+import java.util.List;
+import java.util.function.Consumer;
+
+/**
+ * Options dialog's "Playback / Capture" tab: device pickers, gain/volume, and the
+ * noise-reduction pre-processing options. Gain and pre-processing changes are pushed
+ * live via {@code applyLive}, which reaches both the connected microphone and the
+ * dialog's own microphone test.
+ */
+final class DevicesPanel extends FormPanel {
+
+    private final JComboBox<AudioDevices.Device> inputCombo;
+    private final JComboBox<AudioDevices.Device> outputCombo;
+    private final JSlider inputGain;
+    private final JSlider outputVol;
+    private final JCheckBox denoiseCheck;
+    private final JSlider denoiseLevel;
+    private final JCheckBox typingCheck;
+    private final JCheckBox agcCheck;
+
+    DevicesPanel(Settings settings, VoiceOutput livePlayback,
+                 Consumer<Consumer<VoiceInput>> applyLive,
+                 Runnable onInputDeviceChanged, Consumer<String> onOutputDeviceChanged) {
+        GridBagConstraints c = gbc();
+
+        List<AudioDevices.Device> ins = AudioDevices.inputDevices();
+        List<AudioDevices.Device> outs = AudioDevices.outputDevices();
+
+        inputCombo = new JComboBox<>(ins.toArray(new AudioDevices.Device[0]));
+        outputCombo = new JComboBox<>(outs.toArray(new AudioDevices.Device[0]));
+        selectOrDefault(inputCombo, settings.inputDevice);
+        selectOrDefault(outputCombo, settings.outputDevice);
+
+        String deviceHint = "<html>Named devices are PipeWire's, and are routed through it "
+                + "(so per-application volume and rerouting keep working).<br>"
+                + "<b>ALSA:</b> entries talk to the sound card directly, taking it exclusively.</html>";
+        inputCombo.setToolTipText(deviceHint);
+        outputCombo.setToolTipText(deviceHint);
+        limitWidth(inputCombo, FIELD_WIDTH);
+        limitWidth(outputCombo, FIELD_WIDTH);
+
+        int row = 0;
+        addRow(this, c, row++, new JLabel("Capture device (microphone):"), inputCombo);
+        addRow(this, c, row++, new JLabel("Playback device (speakers):"), outputCombo);
+
+        inputGain = new JSlider(0, 200, (int) Math.round(settings.inputVolume * 100));
+        outputVol = new JSlider(0, 200, (int) Math.round(settings.outputVolume * 100));
+        limitWidth(inputGain, SLIDER_WIDTH);
+        limitWidth(outputVol, SLIDER_WIDTH);
+        addRow(this, c, row++, new JLabel("Microphone gain:"), inputGain);
+        addRow(this, c, row++, new JLabel("Playback volume:"), outputVol);
+
+        outputVol.addChangeListener(e -> {
+            if (livePlayback != null) livePlayback.setMasterVolume(outputVol.getValue() / 100.0);
+        });
+        inputGain.addChangeListener(e ->
+                applyLive.accept(m -> m.setInputGain(inputGain.getValue() / 100.0)));
+        inputCombo.addActionListener(e -> onInputDeviceChanged.run());
+        outputCombo.addActionListener(e -> onOutputDeviceChanged.accept(comboValue(outputCombo)));
+
+        c.gridx = 0;
+        c.gridy = row++;
+        c.gridwidth = 2;
+        c.insets = new Insets(14, 4, 2, 4);
+        add(new JLabel("Noise reduction"), c);
+        c.insets = new Insets(4, 4, 4, 4);
+        c.gridwidth = 1;
+
+        denoiseCheck = new JCheckBox("Remove background noise", settings.denoise);
+        denoiseCheck.setToolTipText("Attempt to filter out background noises.");
+        denoiseLevel = new JSlider(0, 100, (int) Math.round(settings.denoiserLevel * 100));
+        limitWidth(denoiseLevel, SLIDER_WIDTH);
+        denoiseLevel.setToolTipText("Higher = more aggressive noise removal.");
+        typingCheck = new JCheckBox("Typing attenuation", settings.typingAttenuation);
+        typingCheck.setToolTipText("<html><b>Typing attenuation</b> tries to detect and "
+                + "reduce the sounds made by typing.</html>");
+        agcCheck = new JCheckBox("Automatic gain control (AGC)", settings.agc);
+        agcCheck.setToolTipText("<html><b>Automatic gain control</b> normalises your "
+                + "microphone loudness to a target level, boosting quiet mics and taming "
+                + "loud ones.</html>");
+
+        c.gridx = 0;
+        c.gridy = row++;
+        c.gridwidth = 2;
+        add(denoiseCheck, c);
+        c.gridwidth = 1;
+        addRow(this, c, row++, new JLabel("Noise removal level:"), denoiseLevel);
+        c.gridx = 0;
+        c.gridy = row++;
+        c.gridwidth = 2;
+        add(typingCheck, c);
+        c.gridy = row++;
+        add(agcCheck, c);
+        c.gridwidth = 1;
+
+        Runnable syncNoise = () -> {
+            denoiseLevel.setEnabled(denoiseCheck.isSelected());
+            applyLive.accept(m -> {
+                m.setNoiseSuppression(denoiseCheck.isSelected());
+                m.setDenoiserLevel(denoiseLevel.getValue() / 100.0);
+                m.setTypingAttenuation(typingCheck.isSelected());
+                m.setAgc(agcCheck.isSelected());
+            });
+        };
+        denoiseCheck.addActionListener(e -> syncNoise.run());
+        typingCheck.addActionListener(e -> syncNoise.run());
+        agcCheck.addActionListener(e -> syncNoise.run());
+        denoiseLevel.addChangeListener(e ->
+                applyLive.accept(m -> m.setDenoiserLevel(denoiseLevel.getValue() / 100.0)));
+        syncNoise.run();
+
+        c.gridx = 0;
+        c.gridy = row;
+        c.weighty = 1;
+        add(Box.createGlue(), c);
+    }
+
+    /** Copies the form into {@code target}, without touching anything else. */
+    void writeInto(Settings target) {
+        target.inputDevice = comboValue(inputCombo);
+        target.outputDevice = comboValue(outputCombo);
+        target.inputVolume = inputGain.getValue() / 100.0;
+        target.outputVolume = outputVol.getValue() / 100.0;
+        target.denoise = denoiseCheck.isSelected();
+        target.denoiserLevel = denoiseLevel.getValue() / 100.0;
+        target.typingAttenuation = typingCheck.isSelected();
+        target.agc = agcCheck.isSelected();
+    }
+
+    private static void selectOrDefault(JComboBox<AudioDevices.Device> combo, String deviceId) {
+        if (deviceId != null && !deviceId.isEmpty()) {
+            for (int i = 0; i < combo.getItemCount(); i++) {
+                if (deviceId.equals(combo.getItemAt(i).id())) {
+                    combo.setSelectedIndex(i);
+                    return;
+                }
+            }
+        }
+        combo.setSelectedIndex(0);
+    }
+
+    private static String comboValue(JComboBox<AudioDevices.Device> combo) {
+        AudioDevices.Device d = (AudioDevices.Device) combo.getSelectedItem();
+        return d == null ? "" : d.id();
+    }
+}

ts3-client/swing/src/main/java/com/ts3client/ui/DropIndicatorTree.java

@@ -0,0 +1,284 @@
+package com.ts3client.ui;
+
+import com.ts3client.net.ChannelNode;
+import com.ts3client.net.ClientEntry;
+import com.ts3client.net.ServerModel;
+
+import javax.swing.Icon;
+import javax.swing.JTree;
+import javax.swing.tree.DefaultMutableTreeNode;
+import javax.swing.tree.TreeModel;
+import javax.swing.tree.TreePath;
+import java.awt.BasicStroke;
+import java.awt.Graphics;
+import java.awt.Graphics2D;
+import java.awt.Point;
+import java.awt.Rectangle;
+import java.awt.RenderingHints;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+import java.util.List;
+import java.util.function.Predicate;
+
+/**
+ * The {@link ServerTreePanel} tree, extended to draw where a drag-and-drop would
+ * land: an insertion line between rows, or an outline around the row that will
+ * receive the dragged node. Also keeps the server row permanently expanded and
+ * paints the right-aligned group icon strip, both of which need to hook into
+ * this component's own paint cycle.
+ */
+final class DropIndicatorTree extends JTree {
+
+    /** Gap kept between a row's label and the right-aligned icon strip. */
+    private static final int BADGE_GAP = 8;
+    /** Inset of the strip from the visible right edge. */
+    private static final int BADGE_MARGIN = 4;
+
+    private final ServerModel model;
+    private final GroupIcons groupIcons;
+    /** Set while a drop would move a client into this channel row. */
+    private TreePath highlight;
+    /** The row the pointer is over, or -1 when it is over none. */
+    private int hoverRow = -1;
+    private Predicate<TreePath> pathEditable = path -> false;
+
+    DropIndicatorTree(TreeModel treeModel, ServerModel model, GroupIcons groupIcons) {
+        super(treeModel);
+        this.model = model;
+        this.groupIcons = groupIcons;
+        MouseAdapter hover = new MouseAdapter() {
+            @Override
+            public void mouseMoved(MouseEvent e) {
+                setHoverRow(rowAt(e.getY()));
+            }
+
+            @Override
+            public void mouseDragged(MouseEvent e) {
+                setHoverRow(-1);
+            }
+
+            @Override
+            public void mouseExited(MouseEvent e) {
+                setHoverRow(-1);
+            }
+        };
+        addMouseMotionListener(hover);
+        addMouseListener(hover);
+        // The selected row is filled across the full width below, before the rows
+        // themselves are drawn, so this component must not clear its own background.
+        setOpaque(false);
+    }
+
+    /**
+     * The row a point falls on, going by its vertical band alone: a row reaches
+     * across the whole width, not just as far as its label.
+     */
+    int rowAt(int y) {
+        int row = getClosestRowForLocation(0, y);
+        if (row < 0) return -1;
+        Rectangle bounds = getRowBounds(row);
+        return bounds != null && y >= bounds.y && y < bounds.y + bounds.height ? row : -1;
+    }
+
+    /** The path a point falls on, by the same rule as {@link #rowAt(int)}. */
+    TreePath pathAt(int y) {
+        int row = rowAt(y);
+        return row < 0 ? null : getPathForRow(row);
+    }
+
+    /**
+     * Re-reads the row the pointer is over. Scrolling moves the rows under a pointer
+     * that never moved itself, so the enclosing scroll pane calls this on every scroll.
+     */
+    void refreshHoverRow() {
+        Point pointer = getMousePosition();
+        setHoverRow(pointer == null ? -1 : rowAt(pointer.y));
+    }
+
+    private void setHoverRow(int row) {
+        if (row == hoverRow) return;
+        repaintRow(hoverRow);
+        hoverRow = row;
+        repaintRow(row);
+    }
+
+    private void repaintRow(int row) {
+        if (row < 0) return;
+        Rectangle bounds = getRowBounds(row);
+        if (bounds != null) repaint(0, bounds.y, getWidth(), bounds.height);
+    }
+
+    /** Which rows an inline editor may open on; nothing, until one is installed. */
+    void setPathEditable(Predicate<TreePath> editable) {
+        this.pathEditable = editable;
+    }
+
+    @Override
+    public boolean isPathEditable(TreePath path) {
+        return isEditable() && pathEditable.test(path);
+    }
+
+    /** Keeps the server row permanently open; collapsing it would hide everything. */
+    @Override
+    public void setExpandedState(TreePath path, boolean state) {
+        if (!state && path.getPathCount() == 1) return;
+        super.setExpandedState(path, state);
+    }
+
+    /**
+     * Widens every repaint request to the full visible width. Swing only asks for
+     * the row rectangle, which stops short of the right-aligned icon strip and would
+     * leave it behind when a row's label changes width.
+     */
+    @Override
+    public void repaint(long tm, int x, int y, int width, int height) {
+        Rectangle visible = getVisibleRect();
+        super.repaint(tm, visible.x, y, visible.width, height);
+    }
+
+    void highlightChannel(TreePath path) {
+        if (path == highlight || (path != null && path.equals(highlight))) return;
+        highlight = path;
+        repaint();
+    }
+
+    @Override
+    protected void paintComponent(Graphics g) {
+        Rectangle clip = g.getClipBounds();
+        g.setColor(getBackground());
+        g.fillRect(clip.x, clip.y, clip.width, clip.height);
+        paintSelection(g);
+        paintHover(g);
+        super.paintComponent(g);
+        paintBadges(g);
+        JTree.DropLocation loc = getDropLocation();
+        if (loc == null || loc.getPath() == null) return;
+
+        Graphics2D g2 = (Graphics2D) g.create();
+        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
+        g2.setColor(Theme.accent());
+        if (highlight != null || loc.getChildIndex() < 0) {
+            Rectangle r = getPathBounds(highlight != null ? highlight : loc.getPath());
+            if (r != null) {
+                g2.setStroke(new BasicStroke(2f));
+                g2.drawRoundRect(r.x, r.y + 1, r.width - 1, r.height - 3, 4, 4);
+            }
+        } else {
+            Rectangle line = insertLine(loc);
+            if (line != null) {
+                g2.fillRect(line.x, line.y - 1, line.width, 2);
+                g2.fillOval(line.x - 3, line.y - 4, 7, 7);
+            }
+        }
+        g2.dispose();
+    }
+
+    /**
+     * Fills the selected row across the full width, in the colour the cell renderer
+     * puts behind the label itself, so the selection covers the whole line rather
+     * than stopping where the name ends.
+     */
+    private void paintSelection(Graphics g) {
+        int[] rows = getSelectionRows();
+        if (rows == null) return;
+        Rectangle visible = getVisibleRect();
+        g.setColor(Theme.treeSelection());
+        for (int row : rows) {
+            Rectangle bounds = getRowBounds(row);
+            if (bounds != null) g.fillRect(visible.x, bounds.y, visible.width, bounds.height);
+        }
+    }
+
+    /**
+     * Washes the row under the pointer across the full width it occupies — the same
+     * area a click on it acts on. A selected row keeps its selection colour, and
+     * spacers, which nothing can be done with, are left alone.
+     */
+    private void paintHover(Graphics g) {
+        if (hoverRow < 0 || getDropLocation() != null || isRowSelected(hoverRow)) return;
+        Rectangle bounds = getRowBounds(hoverRow);
+        TreePath path = getPathForRow(hoverRow);
+        if (bounds == null || path == null || isSpacer(path)) return;
+
+        Rectangle visible = getVisibleRect();
+        g.setColor(Theme.hover());
+        g.fillRect(visible.x, bounds.y, visible.width, bounds.height);
+    }
+
+    private boolean isSpacer(TreePath path) {
+        Object obj = ((DefaultMutableTreeNode) path.getLastPathComponent()).getUserObject();
+        return obj instanceof ChannelNode && Spacers.isSpacer(((ChannelNode) obj).name);
+    }
+
+    /** The 1px-tall strip where the insertion line goes, in tree coordinates. */
+    private Rectangle insertLine(JTree.DropLocation loc) {
+        DefaultMutableTreeNode parent = (DefaultMutableTreeNode) loc.getPath().getLastPathComponent();
+        int index = loc.getChildIndex();
+        if (index < parent.getChildCount()) {
+            Rectangle r = getPathBounds(loc.getPath().pathByAddingChild(parent.getChildAt(index)));
+            return r == null ? null : new Rectangle(r.x, r.y, getWidth() - r.x, 2);
+        }
+        if (parent.getChildCount() == 0) {
+            Rectangle r = getPathBounds(loc.getPath());
+            if (r == null) return null;
+            int x = r.x + getRowHeight();
+            return new Rectangle(x, r.y + r.height, getWidth() - x, 2);
+        }
+        // Past the last child: below that child's whole (expanded) subtree.
+        TreePath lastChild = loc.getPath().pathByAddingChild(parent.getChildAt(parent.getChildCount() - 1));
+        Rectangle head = getPathBounds(lastChild);
+        Rectangle tail = getPathBounds(lastVisibleRow(lastChild));
+        if (head == null || tail == null) return null;
+        return new Rectangle(head.x, tail.y + tail.height, getWidth() - head.x, 2);
+    }
+
+    private TreePath lastVisibleRow(TreePath path) {
+        int row = getRowForPath(path);
+        if (row < 0) return path;
+        for (int i = row + 1; i < getRowCount(); i++) {
+            if (!path.isDescendant(getPathForRow(i))) break;
+            row = i;
+        }
+        return getPathForRow(row);
+    }
+
+    /**
+     * Paints the icons of every visible row — a client's group icons, a channel's
+     * own icon — flush with the right edge of the viewport, the way TeamSpeak lines
+     * them up. Drawing them separately from the cell renderer keeps the rows'
+     * measured widths (and thus the selection highlight) tied to the label alone.
+     */
+    private void paintBadges(Graphics g) {
+        Rectangle visible = getVisibleRect();
+        int right = visible.x + visible.width - BADGE_MARGIN;
+        for (int row = 0; row < getRowCount(); row++) {
+            Rectangle bounds = getRowBounds(row);
+            if (bounds == null || bounds.y + bounds.height < visible.y) continue;
+            if (bounds.y > visible.y + visible.height) break;
+
+            TreePath path = getPathForRow(row);
+            Object obj = ((DefaultMutableTreeNode) path.getLastPathComponent()).getUserObject();
+            List<Icon> icons = badgesOf(obj);
+            if (icons.isEmpty()) continue;
+
+            GroupIcons.Row strip = new GroupIcons.Row(icons);
+            int x = Math.max(bounds.x + bounds.width + BADGE_GAP, right - strip.getIconWidth());
+            strip.paintIcon(this, g, x, bounds.y + (bounds.height - strip.getIconHeight()) / 2);
+        }
+    }
+
+    /** The icon strip a row shows on its right, empty when it has none (yet). */
+    private List<Icon> badgesOf(Object node) {
+        if (node instanceof ClientEntry) {
+            ClientEntry cl = (ClientEntry) node;
+            return groupIcons.iconsOf(
+                    model.serverGroupsOf(cl.serverGroupIds), model.channelGroup(cl.channelGroupId));
+        }
+        if (node instanceof ChannelNode) {
+            ChannelNode ch = (ChannelNode) node;
+            Icon icon = Spacers.isSpacer(ch.name) ? null : groupIcons.icon(ch.iconId);
+            if (icon != null) return List.of(icon);
+        }
+        return List.of();
+    }
+}

ts3-client/swing/src/main/java/com/ts3client/ui/FileBrowserDialog.java

@@ -66,7 +66,7 @@ public final class FileBrowserDialog extends JDialog {
         this.channelPassword = "";
 
         JPanel content = new JPanel(new BorderLayout(0, 8));
-        content.setBackground(Theme.WINDOW_BG);
+        content.setBackground(Theme.windowBg());
         content.setBorder(BorderFactory.createEmptyBorder(10, 12, 10, 12));
         content.add(buildToolbar(), BorderLayout.NORTH);
         content.add(buildTable(), BorderLayout.CENTER);
@@ -85,7 +85,7 @@ public final class FileBrowserDialog extends JDialog {
     private JPanel buildToolbar() {
         JPanel bar = new JPanel();
         bar.setLayout(new BoxLayout(bar, BoxLayout.X_AXIS));
-        bar.setBackground(Theme.WINDOW_BG);
+        bar.setBackground(Theme.windowBg());
 
         upButton.addActionListener(e -> navigateUp());
         JButton refresh = new JButton("Refresh", Icons.of("FILE_REFRESH"));
@@ -111,13 +111,13 @@ public final class FileBrowserDialog extends JDialog {
         bar.add(Box.createHorizontalStrut(6));
         bar.add(deleteButton);
 
-        pathLabel.setFont(Theme.UI_FONT);
+        pathLabel.setFont(Theme.uiFont());
-        pathLabel.setForeground(Theme.TREE_TEXT);
+        pathLabel.setForeground(Theme.treeText());
         return bar;
     }
 
     private JScrollPane buildTable() {
-        table.setFont(Theme.UI_FONT);
+        table.setFont(Theme.uiFont());
         table.setRowHeight(20);
         table.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
         table.setFillsViewportHeight(true);
@@ -137,17 +137,17 @@ public final class FileBrowserDialog extends JDialog {
             }
         });
         JScrollPane scroll = new JScrollPane(table);
-        scroll.getViewport().setBackground(Theme.TREE_BG);
+        scroll.getViewport().setBackground(Theme.treeBg());
         return scroll;
     }
 
     private JScrollPane buildTransfers() {
         transfersPanel.setLayout(new BoxLayout(transfersPanel, BoxLayout.Y_AXIS));
-        transfersPanel.setBackground(Theme.WINDOW_BG);
+        transfersPanel.setBackground(Theme.windowBg());
         JScrollPane scroll = new JScrollPane(transfersPanel);
         scroll.setBorder(BorderFactory.createTitledBorder("Transfers"));
         scroll.setPreferredSize(new Dimension(10, 120));
-        scroll.getViewport().setBackground(Theme.WINDOW_BG);
+        scroll.getViewport().setBackground(Theme.windowBg());
         return scroll;
     }
 
@@ -326,10 +326,10 @@ public final class FileBrowserDialog extends JDialog {
 
         TransferRow() {
             setLayout(new BorderLayout(8, 0));
-            setBackground(Theme.WINDOW_BG);
+            setBackground(Theme.windowBg());
             setBorder(BorderFactory.createEmptyBorder(3, 2, 3, 2));
             setMaximumSize(new Dimension(Integer.MAX_VALUE, 44));
-            label.setFont(Theme.UI_FONT);
+            label.setFont(Theme.uiFont());
             bar.setStringPainted(true);
             add(label, BorderLayout.NORTH);
             add(bar, BorderLayout.CENTER);

ts3-client/swing/src/main/java/com/ts3client/ui/FormPanel.java

@@ -0,0 +1,104 @@
+package com.ts3client.ui;
+
+import javax.swing.BorderFactory;
+import javax.swing.JComponent;
+import javax.swing.JLabel;
+import javax.swing.JPanel;
+import javax.swing.JSlider;
+import javax.swing.Scrollable;
+import java.awt.BorderLayout;
+import java.awt.Component;
+import java.awt.Dimension;
+import java.awt.GridBagConstraints;
+import java.awt.GridBagLayout;
+import java.awt.Insets;
+import java.awt.Rectangle;
+
+/**
+ * Base for a settings tab's field grid: follows the scroll pane's width instead of
+ * demanding its own preferred one, so rows stay inside the dialog instead of scrolling
+ * sideways. Also holds the small GridBagLayout helpers every such tab needs.
+ */
+class FormPanel extends JPanel implements Scrollable {
+
+    static final int FIELD_WIDTH = 240;
+    static final int SLIDER_WIDTH = 200;
+    static final int MIN_FIELD_WIDTH = 60;
+
+    FormPanel() {
+        super(new GridBagLayout());
+        setBorder(BorderFactory.createEmptyBorder(12, 12, 12, 12));
+    }
+
+    @Override
+    public Dimension getPreferredScrollableViewportSize() {
+        return getPreferredSize();
+    }
+
+    @Override
+    public int getScrollableUnitIncrement(Rectangle visible, int orientation, int direction) {
+        return 16;
+    }
+
+    @Override
+    public int getScrollableBlockIncrement(Rectangle visible, int orientation, int direction) {
+        return visible.height;
+    }
+
+    @Override
+    public boolean getScrollableTracksViewportWidth() {
+        return true;
+    }
+
+    @Override
+    public boolean getScrollableTracksViewportHeight() {
+        return false;
+    }
+
+    static GridBagConstraints gbc() {
+        GridBagConstraints c = new GridBagConstraints();
+        c.insets = new Insets(4, 4, 4, 4);
+        c.anchor = GridBagConstraints.WEST;
+        c.fill = GridBagConstraints.HORIZONTAL;
+        return c;
+    }
+
+    static void addRow(JPanel p, GridBagConstraints c, int row, JLabel label, Component field) {
+        c.gridx = 0;
+        c.gridy = row;
+        c.weightx = 0;
+        c.gridwidth = 1;
+        p.add(label, c);
+        c.gridx = 1;
+        c.weightx = 1;
+        p.add(field, c);
+    }
+
+    /**
+     * Caps a field's preferred width and lets it shrink: long device names and wide sliders
+     * would otherwise force the form past the dialog's edge, where the scroll pane (which
+     * never scrolls horizontally) simply clips them.
+     */
+    static void limitWidth(JComponent comp, int preferredWidth) {
+        int height = comp.getPreferredSize().height;
+        comp.setPreferredSize(new Dimension(preferredWidth, height));
+        comp.setMinimumSize(new Dimension(MIN_FIELD_WIDTH, height));
+    }
+
+    static JPanel sliderWithLabel(JSlider slider, JLabel valueLabel) {
+        return sliderWithLabel(slider, valueLabel, 48);
+    }
+
+    /**
+     * Pairs a slider with its value readout. The readout gets a fixed width wide enough for
+     * the longest value so the slider does not jump around as it is dragged.
+     */
+    static JPanel sliderWithLabel(JSlider slider, JLabel valueLabel, int labelWidth) {
+        JPanel panel = new JPanel(new BorderLayout(6, 0));
+        limitWidth(slider, SLIDER_WIDTH);
+        panel.add(slider, BorderLayout.CENTER);
+        valueLabel.setPreferredSize(new Dimension(labelWidth, valueLabel.getPreferredSize().height));
+        panel.add(valueLabel, BorderLayout.EAST);
+        return panel;
+    }
+}

ts3-client/swing/src/main/java/com/ts3client/ui/HtmlStyles.java

@@ -0,0 +1,108 @@
+package com.ts3client.ui;
+
+import com.ts3client.text.BBCode;
+
+import javax.swing.JEditorPane;
+import javax.swing.JViewport;
+import javax.swing.SwingUtilities;
+import javax.swing.text.html.HTMLEditorKit;
+import javax.swing.text.html.StyleSheet;
+import java.awt.Color;
+
+/**
+ * The HTML panes showing TeamSpeak text — chat logs, client and channel information —
+ * and the theme-dependent stylesheet they share.
+ *
+ * <p>Text that is already on screen keeps the colours its stylesheet was built with, so
+ * a look-and-feel change re-installs the editor kit and parses the pane's content again
+ * instead of only recolouring what is written afterwards.
+ */
+final class HtmlStyles {
+
+    private static final String BODY_STYLE = "HtmlStyles.bodyStyle";
+
+    private HtmlStyles() {
+    }
+
+    /**
+     * @param bodyStyle extra CSS for {@code body}, e.g. font and margins; the text colour
+     *                  is added by the theme
+     * @return a read-only HTML pane whose stylesheet follows the current theme
+     */
+    static JEditorPane pane(String bodyStyle) {
+        JEditorPane pane = new JEditorPane() {
+            @Override
+            public void updateUI() {
+                super.updateUI();
+                restyle(this);
+            }
+        };
+        pane.putClientProperty(BODY_STYLE, bodyStyle);
+        pane.setEditable(false);
+        installKit(pane, null, false);
+        return pane;
+    }
+
+    /**
+     * Paints the scroll pane {@code pane} sits in with the pane's own background: text
+     * only reaches as far as it goes, and the empty space below it would otherwise show
+     * the window's colour instead of the log's.
+     */
+    static void fillViewport(JEditorPane pane) {
+        if (pane.getParent() instanceof JViewport viewport) {
+            viewport.setBackground(pane.getBackground());
+        }
+    }
+
+    /** Re-themes {@code pane}, keeping the text it shows. */
+    private static void restyle(JEditorPane pane) {
+        // Also runs from JEditorPane's constructor, before the pane is one of ours.
+        if (pane.getClientProperty(BODY_STYLE) == null) return;
+
+        int length = pane.getDocument().getLength();
+        String html = length == 0 ? null : pane.getText();
+        // A chat log sits at its newest line; keep it there rather than jumping to the top.
+        boolean atEnd = pane.getCaretPosition() >= length;
+        // Not during the look-and-feel update that got us here: the pane is rebuilding its
+        // views, and replacing the document underneath it would race with that.
+        SwingUtilities.invokeLater(() -> installKit(pane, html, atEnd));
+    }
+
+    private static void installKit(JEditorPane pane, String html, boolean atEnd) {
+        HTMLEditorKit kit = new HTMLEditorKit();
+        StyleSheet css = new StyleSheet();
+        css.addStyleSheet(kit.getStyleSheet());
+
+        Object bodyStyle = pane.getClientProperty(BODY_STYLE);
+        css.addRule("body { " + (bodyStyle == null ? "" : bodyStyle + " ")
+                + "color:" + hex(Theme.chatText()) + "; }");
+        // Secondary text (timestamps, labels, placeholders), an author's name and the lines
+        // about what happened on the server.
+        css.addRule(".muted { color:" + hex(Theme.chatSystem()) + "; }");
+        css.addRule(".name { color:" + hex(Theme.chatName()) + "; font-weight:bold; }");
+        css.addRule(".event { color:" + hex(Theme.chatEvent()) + "; }");
+        css.addRule("a { color:" + hex(Theme.chatName()) + "; text-decoration:none; }");
+        // Client references look exactly like a message author's name.
+        css.addRule("a." + BBCode.IDENTITY_LINK_CLASS
+                + " { color:" + hex(Theme.chatName()) + "; font-weight:bold; text-decoration:none; }");
+        // Channel (and other TeamSpeak protocol) references stand out of a line the same
+        // way a client's name does.
+        css.addRule("a." + BBCode.TS_LINK_CLASS
+                + " { color:" + hex(Theme.chatName()) + "; font-weight:bold; text-decoration:none; }");
+        // External links are underlined so they can't be mistaken for an identity.
+        css.addRule("a." + BBCode.EXTERNAL_LINK_CLASS
+                + " { color:" + hex(Theme.link()) + "; text-decoration:underline; }");
+        kit.setStyleSheet(css);
+
+        pane.setEditorKit(kit);
+        fillViewport(pane);
+        if (html != null) {
+            pane.setText(html);
+            pane.setCaretPosition(atEnd ? pane.getDocument().getLength() : 0);
+        }
+    }
+
+    private static String hex(Color c) {
+        return String.format("#%02x%02x%02x", c.getRed(), c.getGreen(), c.getBlue());
+    }
+}

ts3-client/swing/src/main/java/com/ts3client/ui/IconChooserDialog.java

@@ -0,0 +1,270 @@
+package com.ts3client.ui;
+
+import com.ts3client.net.IconRepository;
+import com.ts3client.net.TeamspeakConnection;
+
+import javax.swing.BorderFactory;
+import javax.swing.DefaultListModel;
+import javax.swing.ImageIcon;
+import javax.swing.JButton;
+import javax.swing.JDialog;
+import javax.swing.JFileChooser;
+import javax.swing.JLabel;
+import javax.swing.JList;
+import javax.swing.JOptionPane;
+import javax.swing.JPanel;
+import javax.swing.JScrollPane;
+import javax.swing.JSplitPane;
+import javax.swing.ListSelectionModel;
+import javax.swing.SwingUtilities;
+import javax.swing.Timer;
+import javax.swing.filechooser.FileNameExtensionFilter;
+import java.awt.BorderLayout;
+import java.awt.Component;
+import java.awt.Dimension;
+import java.awt.Window;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+import java.io.File;
+
+/**
+ * TeamSpeak's icon viewer: the icons uploaded to this virtual server on one side (which
+ * can be added to and removed from here) and the ones the icon pack ships on the other.
+ *
+ * <p>Server icons arrive through the {@link IconRepository}, which downloads them in the
+ * background, so the lists are simply repainted until every icon has turned up.
+ */
+final class IconChooserDialog extends JDialog {
+
+    /** How often the lists are repainted while icons are still being downloaded. */
+    private static final int REFRESH_MS = 300;
+    /** Give up repainting once nothing has arrived for this long. */
+    private static final int REFRESH_TIMEOUT_MS = 20_000;
+
+    private final TeamspeakConnection conn;
+    private final GroupIcons groupIcons;
+
+    private final DefaultListModel<Long> remoteModel = new DefaultListModel<>();
+    private final JList<Long> remoteList = new JList<>(remoteModel);
+    private final JList<Long> localList = new JList<>(new DefaultListModel<>());
+    private final JButton deleteButton = new JButton("Delete");
+    private final JButton selectButton = new JButton("Select");
+    private final JLabel status = new JLabel(" ");
+
+    private long chosenIconId;
+    private boolean accepted;
+
+    IconChooserDialog(Window owner, TeamspeakConnection conn, GroupIcons groupIcons) {
+        super(owner, "Icons", ModalityType.APPLICATION_MODAL);
+        this.conn = conn;
+        this.groupIcons = groupIcons;
+
+        configure(remoteList);
+        configure(localList);
+        DefaultListModel<Long> localModel = (DefaultListModel<Long>) localList.getModel();
+        for (Long id : IconRepository.BUNDLED_IDS) localModel.addElement(id);
+
+        JSplitPane split = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,
+                group("Remote", remoteList, remoteButtons()),
+                group("Local", localList, localFooter()));
+        split.setResizeWeight(0.6);
+
+        status.setBorder(BorderFactory.createEmptyBorder(2, 8, 2, 8));
+        status.setForeground(Theme.chatSystem());
+
+        getContentPane().setLayout(new BorderLayout());
+        getContentPane().add(split, BorderLayout.CENTER);
+        JPanel south = new JPanel(new BorderLayout());
+        south.add(status, BorderLayout.NORTH);
+        south.add(buttons(), BorderLayout.SOUTH);
+        getContentPane().add(south, BorderLayout.SOUTH);
+
+        Dialogs.closeOnEscape(this);
+        setDefaultCloseOperation(DISPOSE_ON_CLOSE);
+        setSize(new Dimension(520, 360));
+        setLocationRelativeTo(owner);
+
+        loadRemoteIcons();
+        startRefreshing();
+    }
+
+    /** @return whether an icon was picked; {@link #getIconId()} then holds it */
+    boolean isAccepted() {
+        return accepted;
+    }
+
+    long getIconId() {
+        return chosenIconId;
+    }
+
+    private void configure(JList<Long> list) {
+        list.setLayoutOrientation(JList.HORIZONTAL_WRAP);
+        list.setVisibleRowCount(-1);
+        list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
+        list.setFixedCellWidth(32);
+        list.setFixedCellHeight(32);
+        list.setCellRenderer(new IconCellRenderer());
+        list.addListSelectionListener(e -> onSelectionChanged(list));
+        list.addMouseListener(new MouseAdapter() {
+            @Override
+            public void mouseClicked(MouseEvent e) {
+                if (e.getClickCount() == 2 && list.getSelectedValue() != null) choose(list.getSelectedValue());
+            }
+        });
+    }
+
+    /** Keeps one list's selection exclusive: picking on one side clears the other. */
+    private void onSelectionChanged(JList<Long> list) {
+        JList<Long> other = list == remoteList ? localList : remoteList;
+        if (list.getSelectedValue() != null) other.clearSelection();
+        deleteButton.setEnabled(remoteList.getSelectedValue() != null);
+        selectButton.setEnabled(selectedIcon() != 0);
+    }
+
+    private long selectedIcon() {
+        Long remote = remoteList.getSelectedValue();
+        if (remote != null) return remote;
+        Long local = localList.getSelectedValue();
+        return local == null ? 0 : local;
+    }
+
+    private JPanel group(String title, JList<Long> list, Component footer) {
+        JPanel panel = new JPanel(new BorderLayout(0, 4));
+        panel.setBorder(BorderFactory.createTitledBorder(title));
+        panel.add(new JScrollPane(list), BorderLayout.CENTER);
+        panel.add(footer, BorderLayout.SOUTH);
+        return panel;
+    }
+
+    private Component remoteButtons() {
+        JButton upload = new JButton("Upload");
+        upload.addActionListener(a -> uploadIcon());
+        deleteButton.setEnabled(false);
+        deleteButton.addActionListener(a -> deleteSelectedIcon());
+        JPanel row = new JPanel(new java.awt.FlowLayout(java.awt.FlowLayout.LEFT, 4, 0));
+        row.add(upload);
+        row.add(deleteButton);
+        return row;
+    }
+
+    private Component localFooter() {
+        com.ts3client.gfx.IconPack active = IconTheme.get().activePack();
+        JLabel pack = new JLabel("Icon Pack: " + (active == null ? "none" : active.name()));
+        pack.setBorder(BorderFactory.createEmptyBorder(0, 4, 0, 4));
+        return pack;
+    }
+
+    private JPanel buttons() {
+        selectButton.setEnabled(false);
+        selectButton.addActionListener(a -> choose(selectedIcon()));
+        JButton cancel = new JButton("Cancel");
+        cancel.addActionListener(a -> dispose());
+        JPanel panel = new JPanel(new BorderLayout());
+        JPanel right = new JPanel();
+        right.add(selectButton);
+        right.add(cancel);
+        panel.add(right, BorderLayout.EAST);
+        getRootPane().setDefaultButton(selectButton);
+        return panel;
+    }
+
+    private void choose(long iconId) {
+        if (iconId == 0) return;
+        chosenIconId = iconId;
+        accepted = true;
+        dispose();
+    }
+
+    private void loadRemoteIcons() {
+        status.setText("Loading icons…");
+        conn.requestServerIcons((ids, error) -> SwingUtilities.invokeLater(() -> {
+            if (error != null) {
+                status.setText("Could not list the server's icons: " + error);
+                return;
+            }
+            status.setText(" ");
+            remoteModel.clear();
+            for (Long id : ids) remoteModel.addElement(id);
+        }));
+    }
+
+    private void uploadIcon() {
+        JFileChooser chooser = new JFileChooser();
+        chooser.setDialogTitle("Select an image to upload");
+        chooser.setFileFilter(new FileNameExtensionFilter("Images", "png", "jpg", "jpeg", "gif", "bmp", "svg"));
+        if (chooser.showOpenDialog(this) != JFileChooser.APPROVE_OPTION) return;
+        File file = chooser.getSelectedFile();
+        status.setText("Uploading " + file.getName() + "…");
+        conn.uploadIcon(file, (iconId, error) -> SwingUtilities.invokeLater(() -> {
+            if (error != null) {
+                status.setText(" ");
+                JOptionPane.showMessageDialog(this, "Error uploading icon: " + error,
+                        "Error", JOptionPane.ERROR_MESSAGE);
+                return;
+            }
+            loadRemoteIcons();
+            startRefreshing();
+        }));
+    }
+
+    private void deleteSelectedIcon() {
+        Long id = remoteList.getSelectedValue();
+        if (id == null) return;
+        int answer = JOptionPane.showConfirmDialog(this,
+                "Permanently delete this icon from the server?", "Confirmation",
+                JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE);
+        if (answer != JOptionPane.YES_OPTION) return;
+        conn.deleteIcon(id, error -> SwingUtilities.invokeLater(() -> {
+            if (error != null) {
+                JOptionPane.showMessageDialog(this, "Failed to delete remote icon file: " + error,
+                        "Error", JOptionPane.ERROR_MESSAGE);
+                return;
+            }
+            remoteModel.removeElement(id);
+        }));
+    }
+
+    /**
+     * Repaints while the repository is still fetching icons; it hands them over silently,
+     * so the only way to show them as they land is to keep asking.
+     */
+    private void startRefreshing() {
+        Timer timer = new Timer(REFRESH_MS, null);
+        long deadline = System.currentTimeMillis() + REFRESH_TIMEOUT_MS;
+        timer.addActionListener(e -> {
+            remoteList.repaint();
+            localList.repaint();
+            if (!isDisplayable() || System.currentTimeMillis() > deadline || allIconsLoaded()) timer.stop();
+        });
+        timer.start();
+    }
+
+    private boolean allIconsLoaded() {
+        for (int i = 0; i < remoteModel.size(); i++) {
+            if (groupIcons.icon(remoteModel.get(i)) == null) return false;
+        }
+        return true;
+    }
+
+    /** Draws one icon, blank until the repository has it. */
+    private final class IconCellRenderer extends javax.swing.DefaultListCellRenderer {
+        @Override
+        public Component getListCellRendererComponent(JList<?> list, Object value, int index,
+                                                      boolean selected, boolean focused) {
+            super.getListCellRendererComponent(list, "", index, selected, focused);
+            long id = value instanceof Long ? (Long) value : 0;
+            ImageIcon icon = groupIcons.icon(id);
+            setIcon(icon);
+            setHorizontalAlignment(CENTER);
+            setToolTipText("Icon " + id);
+            return this;
+        }
+    }
+
+    /** Convenience for callers that only need the picked id. */
+    static long pick(Window owner, TeamspeakConnection conn, GroupIcons groupIcons, long current) {
+        IconChooserDialog dialog = new IconChooserDialog(owner, conn, groupIcons);
+        dialog.setVisible(true);
+        return dialog.isAccepted() ? dialog.getIconId() : current;
+    }
+}

ts3-client/swing/src/main/java/com/ts3client/ui/Icons.java

@@ -121,7 +121,7 @@ public final class Icons {
     }
 
     public static ImageIcon clientIdle(int size) {
-        return themed("PLAYER_OFF", size, g -> paintPerson(g, Theme.IDLE_CLIENT));
+        return themed("PLAYER_OFF", size, g -> paintPerson(g, Theme.idleClient()));
     }
 
     public static ImageIcon clientTalking() {
@@ -129,7 +129,7 @@ public final class Icons {
     }
 
     public static ImageIcon clientTalking(int size) {
-        return themed("PLAYER_ON", size, g -> paintPerson(g, Theme.TALKING));
+        return themed("PLAYER_ON", size, g -> paintPerson(g, Theme.talking()));
     }
 
     public static ImageIcon clientAway() {
@@ -137,7 +137,7 @@ public final class Icons {
     }
 
     public static ImageIcon clientAway(int size) {
-        return themed("AWAY", size, g -> paintPerson(g, Theme.AWAY));
+        return themed("AWAY", size, g -> paintPerson(g, Theme.away()));
     }
 
     /** A channel commander that is not talking. */
@@ -151,7 +151,7 @@ public final class Icons {
     }
 
     public static ImageIcon clientQuery() {
-        return themed("SERVER_QUERY", g -> paintPerson(g, Theme.IDLE_CLIENT));
+        return themed("SERVER_QUERY", g -> paintPerson(g, Theme.idleClient()));
     }
 
     public static ImageIcon micMuted() {
@@ -199,12 +199,12 @@ public final class Icons {
 
     /** A channel commander that is not talking. */
     public static ImageIcon clientCommander(int size) {
-        return themed("PLAYER_COMMANDER_OFF", size, g -> paintPerson(g, Theme.IDLE_CLIENT));
+        return themed("PLAYER_COMMANDER_OFF", size, g -> paintPerson(g, Theme.idleClient()));
     }
 
     /** A channel commander that is talking. */
     public static ImageIcon clientCommanderTalking(int size) {
-        return themed("PLAYER_COMMANDER_ON", size, g -> paintPerson(g, Theme.TALKING));
+        return themed("PLAYER_COMMANDER_ON", size, g -> paintPerson(g, Theme.talking()));
     }
 
     // ---- toolbar / action icons ----
@@ -243,9 +243,34 @@ public final class Icons {
         return themed("ACTIVATE_MICROPHONE", Icons::paintMicActive);
     }
 
+    /**
+     * A fixed-width "channel icon / edit icon" label icon, used where a tab must not
+     * change width as the object it shows changes (e.g. the info-panel-in-chat tab).
+     */
+    public static ImageIcon channelClientPair() {
+        ImageIcon channel = channel(true);
+        ImageIcon edit = themed("EDIT", Icons::paintEdit);
+        int gap = 8;
+        int width = channel.getIconWidth() + gap + edit.getIconWidth();
+        int height = Math.max(channel.getIconHeight(), edit.getIconHeight());
+        BufferedImage img = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
+        Graphics2D g = img.createGraphics();
+        g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
+        g.drawImage(channel.getImage(), 0, (height - channel.getIconHeight()) / 2, null);
+        g.setColor(Theme.idleClient());
+        g.setFont(Theme.uiFont());
+        java.awt.FontMetrics fm = g.getFontMetrics();
+        int slashX = channel.getIconWidth() + (gap - fm.stringWidth("/")) / 2;
+        g.drawString("/", slashX, (height + fm.getAscent()) / 2 - 1);
+        g.drawImage(edit.getImage(), channel.getIconWidth() + gap,
+                (height - edit.getIconHeight()) / 2, null);
+        g.dispose();
+        return new ImageIcon(img);
+    }
+
     /** The toolbar's away marker. */
     public static ImageIcon away() {
-        return themed("AWAY", IconTheme.TOOLBAR_SIZE, g -> paintPerson(g, Theme.AWAY));
+        return themed("AWAY", IconTheme.TOOLBAR_SIZE, g -> paintPerson(g, Theme.away()));
     }
 
     public static ImageIcon settings() {
@@ -304,7 +329,7 @@ public final class Icons {
     }
 
     private static void paintMicMuted(Graphics2D g) {
-        g.setColor(Theme.MUTED);
+        g.setColor(Theme.muted());
         g.fillRoundRect(6, 2, 4, 7, 2, 2);
         g.setStroke(new BasicStroke(1.4f));
         g.drawArc(4, 6, 8, 6, 200, 140);
@@ -314,7 +339,7 @@ public final class Icons {
     }
 
     private static void paintSpeakerMuted(Graphics2D g) {
-        g.setColor(Theme.MUTED);
+        g.setColor(Theme.muted());
         g.fillRect(2, 6, 3, 4);
         int[] xs = {5, 9, 9, 5};
         int[] ys = {6, 3, 13, 10};
@@ -325,7 +350,7 @@ public final class Icons {
 
     /** Same shape as {@link #paintMicMuted}, but grey: unavailable, not muted by choice. */
     private static void paintMicDisabled(Graphics2D g) {
-        g.setColor(Theme.IDLE_CLIENT);
+        g.setColor(Theme.idleClient());
         g.fillRoundRect(6, 2, 4, 7, 2, 2);
         g.setStroke(new BasicStroke(1.4f));
         g.drawArc(4, 6, 8, 6, 200, 140);
@@ -336,7 +361,7 @@ public final class Icons {
 
     /** Same shape as {@link #paintSpeakerMuted}, but grey: unavailable, not muted by choice. */
     private static void paintSpeakerDisabled(Graphics2D g) {
-        g.setColor(Theme.IDLE_CLIENT);
+        g.setColor(Theme.idleClient());
         g.fillRect(2, 6, 3, 4);
         int[] xs = {5, 9, 9, 5};
         int[] ys = {6, 3, 13, 10};
@@ -348,7 +373,7 @@ public final class Icons {
     /** {@link #paintMicMuted}, marked with a small dot: silenced, but not reported as muted. */
     private static void paintMicLocalMuted(Graphics2D g) {
         paintMicMuted(g);
-        g.setColor(Theme.ACCENT);
+        g.setColor(Theme.accent());
         g.fillOval(11, 10, 4, 4);
     }
 
@@ -362,7 +387,7 @@ public final class Icons {
     }
 
     private static void paintDisconnect(Graphics2D g) {
-        g.setColor(Theme.MUTED);
+        g.setColor(Theme.muted());
         g.setStroke(new BasicStroke(2f));
         g.drawLine(3, 8, 8, 8);
         g.fillRoundRect(8, 5, 5, 6, 2, 2);
@@ -389,7 +414,7 @@ public final class Icons {
     }
 
     private static void paintMicActive(Graphics2D g) {
-        g.setColor(Theme.TALKING);
+        g.setColor(Theme.talking());
         g.fillOval(1, 1, 14, 14);
         g.setColor(Color.WHITE);
         g.fillRoundRect(6, 3, 4, 6, 2, 2);
@@ -398,6 +423,18 @@ public final class Icons {
         g.drawLine(8, 11, 8, 13);
     }
 
+    /** A pencil glyph, drawn when no icon pack ships an "EDIT" icon. */
+    private static void paintEdit(Graphics2D g) {
+        g.setColor(new Color(0x37474F));
+        g.setStroke(new BasicStroke(1.4f));
+        g.drawLine(3, 13, 11, 5);
+        g.drawLine(3, 13, 4, 10);
+        g.drawLine(4, 10, 11, 3);
+        g.drawLine(11, 3, 13, 5);
+        g.drawLine(13, 5, 11, 7);
+        g.drawLine(11, 5, 13, 7);
+    }
+
     private static void paintSettings(Graphics2D g) {
         g.setColor(new Color(0x37474F));
         g.setStroke(new BasicStroke(2f));
@@ -413,7 +450,7 @@ public final class Icons {
     }
 
     private static void paintApp(Graphics2D g) {
-        g.setColor(Theme.ACCENT);
+        g.setColor(Theme.accent());
         g.fillRoundRect(1, 1, 14, 14, 4, 4);
         g.setColor(Color.WHITE);
         g.setStroke(new BasicStroke(1.6f));

ts3-client/swing/src/main/java/com/ts3client/ui/InfoPanel.java

@@ -20,39 +20,100 @@ import java.util.List;
  */
 public final class InfoPanel extends JScrollPane {
 
-    private final JEditorPane pane = new JEditorPane();
+    /** Moves the whole info panel's content out to a persistent chat tab. */
+    public interface DescriptionHandler {
+        /** Shows/updates {@code html} in the info chat tab, creating it if needed. */
+        void showInfoTab(String html, Runnable onClose);
+
+        /** Closes the info chat tab (the user chose to show details in the panel again). */
+        void closeInfoTab();
+
+        /** Hides (or restores) the panel itself, freeing its space, while its content lives in the chat tab. */
+        void setPanelHidden(boolean hidden);
+    }
+
+    private static final String TOGGLE_HREF = "app:toggle-info-tab";
+
+    private final JEditorPane pane = HtmlStyles.pane("font-family:sans-serif; font-size:11px;");
+    private DescriptionHandler descriptionHandler;
+    private ChannelNode shownChannel;
+    private ClientEntry shownClient;
+    private ServerModel shownModel;
+    private IconRepository shownIcons;
+    private boolean inChatTab;
 
     public InfoPanel() {
-        javax.swing.text.html.HTMLEditorKit kit = new javax.swing.text.html.HTMLEditorKit();
-        javax.swing.text.html.StyleSheet css = new javax.swing.text.html.StyleSheet();
-        css.addStyleSheet(kit.getStyleSheet());
-        css.addRule("a { color:" + hex(Theme.CHAT_NAME) + "; text-decoration:none; }");
-        // Client references look exactly like a message author's name.
-        css.addRule("a." + BBCode.IDENTITY_LINK_CLASS
-                + " { color:" + hex(Theme.CHAT_NAME) + "; font-weight:bold; text-decoration:none; }");
-        // External links are underlined so they can't be mistaken for an identity.
-        css.addRule("a." + BBCode.EXTERNAL_LINK_CLASS
-                + " { color:" + hex(Theme.LINK) + "; text-decoration:underline; }");
-        kit.setStyleSheet(css);
-        pane.setEditorKit(kit);
-        pane.setEditable(false);
-        pane.setBackground(Theme.CHAT_BG);
         pane.setBorder(BorderFactory.createEmptyBorder(6, 8, 6, 8));
         pane.addHyperlinkListener(e -> {
-            if (e.getEventType() == javax.swing.event.HyperlinkEvent.EventType.ACTIVATED) {
+            if (e.getEventType() != javax.swing.event.HyperlinkEvent.EventType.ACTIVATED) return;
+            if (TOGGLE_HREF.equals(e.getDescription())) {
+                inChatTab = !inChatTab;
+                if (!inChatTab && descriptionHandler != null) descriptionHandler.closeInfoTab();
+                render();
+            } else {
                 Links.open(e.getDescription(), this);
             }
         });
         setViewportView(pane);
-        setBorder(BorderFactory.createLineBorder(new java.awt.Color(0xD0D0D0)));
+        HtmlStyles.fillViewport(pane);
         clear();
     }
 
+    @Override
+    public void updateUI() {
+        super.updateUI();
+        setBorder(BorderFactory.createLineBorder(Theme.border()));
+    }
+
     public void clear() {
-        setHtml("<i style='color:#8a8a8a'>Select a channel or client to see details.</i>");
+        shownChannel = null;
+        shownClient = null;
+        inChatTab = false;
+        render();
+    }
+
+    public void setDescriptionHandler(DescriptionHandler handler) {
+        this.descriptionHandler = handler;
+    }
+
+    /** Runs when the user closes the info chat tab; shows details in the panel again. */
+    private void onInfoTabClosed() {
+        inChatTab = false;
+        render();
     }
 
     public void showChannel(ChannelNode ch) {
+        shownChannel = ch;
+        shownClient = null;
+        render();
+    }
+
+    public void showClient(ClientEntry cl, ServerModel model, IconRepository icons) {
+        shownClient = cl;
+        shownChannel = null;
+        shownModel = model;
+        shownIcons = icons;
+        render();
+    }
+
+    private void render() {
+        boolean selected = shownChannel != null || shownClient != null;
+        boolean hide = inChatTab && selected;
+        if (descriptionHandler != null) descriptionHandler.setPanelHidden(hide);
+        if (hide) {
+            descriptionHandler.showInfoTab(body(), this::onInfoTabClosed);
+        } else {
+            setHtml(body() + (selected ? toggleLink(true) : ""));
+        }
+    }
+
+    private String body() {
+        if (shownChannel != null) return channelBody(shownChannel);
+        if (shownClient != null) return clientBody(shownClient, shownModel, shownIcons);
+        return "<i class='muted'>Select a channel or client to see details.</i>";
+    }
+
+    private static String channelBody(ChannelNode ch) {
         StringBuilder sb = new StringBuilder();
         sb.append(heading(esc(ch.name)));
         row(sb, "Type", ch.permanent ? "Permanent" : "Temporary");
@@ -63,16 +124,16 @@ public final class InfoPanel extends JScrollPane {
         if (ch.description != null && !ch.description.isEmpty()) {
             sb.append("<div>").append(multiline(ch.description)).append("</div>");
         } else if (ch.descriptionLoaded) {
-            sb.append("<i style='color:#8a8a8a'>No description.</i>");
+            sb.append("<i class='muted'>No description.</i>");
         } else {
-            sb.append("<i style='color:#8a8a8a'>Loading description…</i>");
+            sb.append("<i class='muted'>Loading description…</i>");
         }
-        setHtml(sb.toString());
+        return sb.toString();
     }
 
-    public void showClient(ClientEntry cl, ServerModel model, IconRepository icons) {
+    private static String clientBody(ClientEntry cl, ServerModel model, IconRepository icons) {
         StringBuilder sb = new StringBuilder();
-        sb.append(heading(esc(cl.nickname) + (cl.self ? " <span style='color:#8a8a8a'>(you)</span>" : "")));
+        sb.append(heading(esc(cl.nickname) + (cl.self ? " <span class='muted'>(you)</span>" : "")));
 
         List<Group> serverGroups = model.serverGroupsOf(cl.serverGroupIds);
         if (serverGroups.isEmpty()) {
@@ -105,12 +166,17 @@ public final class InfoPanel extends JScrollPane {
         if (cl.description != null && !cl.description.isEmpty()) {
             sb.append("<hr><div>").append(multiline(cl.description)).append("</div>");
         }
-        setHtml(sb.toString());
+        return sb.toString();
+    }
+
+    /** The link that toggles between showing details here and in a chat tab. */
+    private static String toggleLink(boolean toChat) {
+        return "<div style='margin-top:8px'><a href='" + TOGGLE_HREF + "' style='font-size:10px'>"
+                + (toChat ? "Show in chat tab" : "Show here") + "</a></div>";
     }
 
     private void setHtml(String body) {
-        pane.setText("<html><body style='font-family:sans-serif;font-size:11px;color:#202020'>"
+        pane.setText("<html><body>" + body + "</body></html>");
-                + body + "</body></html>");
         pane.setCaretPosition(0);
     }
 
@@ -131,7 +197,7 @@ public final class InfoPanel extends JScrollPane {
     }
 
     private static void row(StringBuilder sb, String label, String value) {
-        sb.append("<div style='margin:1px 0'><span style='color:#5a6b7b'>")
+        sb.append("<div style='margin:1px 0'><span class='muted'>")
                 .append(label).append(":</span> ").append(value).append("</div>");
     }
 
@@ -144,7 +210,4 @@ public final class InfoPanel extends JScrollPane {
         return BBCode.escape(s);
     }
 
-    private static String hex(java.awt.Color c) {
-        return String.format("#%06X", c.getRGB() & 0xFFFFFF);
-    }
 }

ts3-client/swing/src/main/java/com/ts3client/ui/LevelMeter.java

@@ -73,7 +73,7 @@ public final class LevelMeter extends JComponent {
         g.fillRoundRect(0, 0, w - 1, h - 1, 6, 6);
 
         int level = dbToX(levelDb, w - 2);
-        g.setColor(transmitting ? Theme.TALKING : new Color(0x5A9BD4));
+        g.setColor(transmitting ? Theme.talking() : new Color(0x5A9BD4));
         g.fillRoundRect(1, 1, Math.max(0, level), h - 3, 5, 5);
 
         if (showThreshold) {

ts3-client/swing/src/main/java/com/ts3client/ui/LookAndFeelManager.java

@@ -0,0 +1,51 @@
+package com.ts3client.ui;
+
+import com.formdev.flatlaf.FlatDarkLaf;
+import com.formdev.flatlaf.FlatLaf;
+import com.formdev.flatlaf.FlatLightLaf;
+import com.ts3client.config.Settings;
+
+import java.awt.Window;
+
+/**
+ * Installs FlatLaf in the requested variant and keeps {@link Theme} in step with it.
+ *
+ * <p>The client's own look-and-feel defaults — rounded controls, and the darker palette
+ * the dark theme is built on — live beside this class as FlatLaf properties files, which
+ * FlatLaf loads on top of the theme's own.
+ */
+public final class LookAndFeelManager {
+
+    /** Where our own FlatLaf properties files sit. */
+    private static final String DEFAULTS_PACKAGE = "com.ts3client.ui.laf";
+
+    static {
+        // Registered once: FlatLaf keeps every registration, and install() runs again on
+        // each theme switch.
+        FlatLaf.registerCustomDefaultsSource(DEFAULTS_PACKAGE);
+    }
+
+    private LookAndFeelManager() {
+    }
+
+    /** Installs the look-and-feel for {@code appearance}. Call before building any window. */
+    public static void install(Settings.Appearance appearance) {
+        FlatLaf laf = appearance == Settings.Appearance.DARK ? new FlatDarkLaf() : new FlatLightLaf();
+        // Whatever look-and-feel stays installed on failure, Theme falls back to its own palette.
+        FlatLaf.setup(laf);
+        Theme.refresh();
+    }
+
+    /**
+     * Switches the look-and-feel of the running client. Components that read {@link Theme}
+     * while painting follow immediately; the ones that copied a colour when they were built
+     * are refreshed by the look-and-feel update.
+     */
+    public static void switchTo(Settings.Appearance appearance) {
+        install(appearance);
+        FlatLaf.updateUI();
+        for (Window w : Window.getWindows()) {
+            w.repaint();
+        }
+    }
+}

ts3-client/swing/src/main/java/com/ts3client/ui/MainFrame.java

@@ -12,22 +12,15 @@ import com.ts3client.sound.SoundNotifier;
 import com.ts3client.sound.SoundPlayer;
 
 import javax.swing.BorderFactory;
-import javax.swing.Box;
-import javax.swing.JButton;
 import javax.swing.JCheckBox;
 import javax.swing.JCheckBoxMenuItem;
 import javax.swing.JFrame;
 import javax.swing.JLabel;
-import javax.swing.JMenu;
-import javax.swing.JMenuBar;
 import javax.swing.JMenuItem;
 import javax.swing.JOptionPane;
 import javax.swing.JPanel;
 import javax.swing.JPopupMenu;
 import javax.swing.JTextField;
-import javax.swing.JToggleButton;
-import javax.swing.JToolBar;
-import javax.swing.KeyStroke;
 import javax.swing.SwingUtilities;
 import java.awt.BorderLayout;
 import java.awt.Dimension;
@@ -65,25 +58,14 @@ public final class MainFrame extends JFrame implements ServerTabPane.Listener {
     /** The tab that owns the capture device; null when nobody is capturing. */
     private ServerTab micTab;
 
-    private JMenu bookmarksMenu;
+    private MainMenuBar menuBar;
-    private JCheckBoxMenuItem awayItem;
-    private JMenuItem awayStatusItem;
-    private JCheckBoxMenuItem commanderItem;
     private javax.swing.Timer statusTimer;
 
-    private final JLabel statusLabel = new JLabel("Not connected");
-    private final JLabel codecLabel = new JLabel();
-
     /** Mirrors the active server's own client state next to the clock. */
     private TrayController tray;
 
-    private JToolBar toolbar;
+    private MainToolbar toolbar;
-    private JButton connectButton;
+    private StatusBar statusBar;
-    private JButton disconnectButton;
-    private JToggleButton activeButton;
-    private JToggleButton micButton;
-    private JToggleButton speakerButton;
-    private DropDownToggleButton awayButton;
 
     private boolean pttPressed;
 
@@ -117,22 +99,24 @@ public final class MainFrame extends JFrame implements ServerTabPane.Listener {
         setMinimumSize(new Dimension(720, 480));
 
         tray = new TrayController(this, this::quit);
-        setJMenuBar(buildMenuBar());
+        menuBar = buildMenuBar();
+        setJMenuBar(menuBar);
 
         toolbar = buildToolbar();
         add(toolbar, BorderLayout.NORTH);
         // Switching the icon pack in the options dialog re-decorates the whole window.
         IconTheme.get().addListener(() -> SwingUtilities.invokeLater(this::rebuildIcons));
         add(tabPane, BorderLayout.CENTER);
-        add(buildStatusBar(), BorderLayout.SOUTH);
+        statusBar = new StatusBar();
+        statusBar.setVisible(settings.showStatusBar);
+        add(statusBar, BorderLayout.SOUTH);
 
-        codecLabel.setText(audio.description());
+        statusBar.setCodec(audio.description());
 
         ServerTab first = newTab();
         selectTab(first);
         first.chat().appendSystem("Welcome to the TS3J Swing client.");
         first.chat().appendSystem("Use Connections → Connect to join a server.");
-        first.chat().appendSystem(tray.status());
 
         statusTimer = new javax.swing.Timer(3000, e -> updateConnectionStatus());
         statusTimer.start();
@@ -150,160 +134,156 @@ public final class MainFrame extends JFrame implements ServerTabPane.Listener {
 
     // ---- UI construction ----
 
-    private JMenuBar buildMenuBar() {
+    private MainMenuBar buildMenuBar() {
-        JMenuBar bar = new JMenuBar();
+        return new MainMenuBar(bookmarks, new MainMenuBar.Listener() {
+            @Override
+            public void onConnect() {
+                showConnectDialog();
+            }
 
-        JMenu connections = new JMenu("Connections");
+            @Override
-        JMenuItem connect = new JMenuItem("Connect…", Icons.of("CONNECT"));
+            public void onDisconnect() {
-        connect.setAccelerator(KeyStroke.getKeyStroke("control S"));
+                doDisconnect();
-        connect.addActionListener(e -> showConnectDialog());
+            }
-        JMenuItem disconnect = new JMenuItem("Disconnect", Icons.of("DISCONNECT"));
-        disconnect.addActionListener(e -> doDisconnect());
-        JMenuItem closeTab = new JMenuItem("Close tab", Icons.of("CLOSE_BUTTON"));
-        closeTab.setAccelerator(KeyStroke.getKeyStroke("control W"));
-        closeTab.addActionListener(e -> closeTab(selected));
-        JMenuItem quit = new JMenuItem("Quit", Icons.of("QUIT"));
-        quit.addActionListener(e -> quit());
-        connections.add(connect);
-        connections.add(disconnect);
-        connections.add(closeTab);
-        connections.addSeparator();
-        connections.add(quit);
 
-        bookmarksMenu = new JMenu("Bookmarks");
+            @Override
-        rebuildBookmarksMenu();
+            public void onCloseTab() {
+                closeTab(selected);
+            }
 
-        JMenu self = new JMenu("Self");
+            @Override
-        JMenuItem mute = new JMenuItem("Toggle microphone", Icons.of("CAPTURE"));
+            public void onQuit() {
-        mute.addActionListener(e -> micButton.doClick());
+                quit();
-        JMenuItem deaf = new JMenuItem("Toggle speakers", Icons.of("PLAYBACK"));
+            }
-        deaf.addActionListener(e -> speakerButton.doClick());
+
-        awayItem = new JCheckBoxMenuItem("Away", Icons.of("AWAY"), false);
+            @Override
-        awayItem.addActionListener(e -> toggleAway());
+            public void onToggleMic() {
-        awayStatusItem = new JMenuItem("Set away status…", Icons.of("EDIT"));
+                toolbar.clickMic();
-        awayStatusItem.addActionListener(e -> setAwayStatus());
+            }
-        commanderItem = new JCheckBoxMenuItem("Channel commander", Icons.of("CHANNEL_COMMANDER"), false);
+
-        commanderItem.addActionListener(e -> {
+            @Override
-            if (selected != null) selected.setCommander(commanderItem.isSelected());
+            public void onToggleSpeaker() {
+                toolbar.clickSpeaker();
+            }
+
+            @Override
+            public void onAwayToggle(boolean away) {
+                toggleAway(away);
+            }
+
+            @Override
+            public void onAwayStatus() {
+                setAwayStatus();
+            }
+
+            @Override
+            public void onCommanderToggle(boolean commander) {
+                if (selected != null) selected.setCommander(commander);
+            }
+
+            @Override
+            public void onChangeNickname() {
+                changeNickname();
+            }
+
+            @Override
+            public void onShowIdentities() {
+                showIdentities();
+            }
+
+            @Override
+            public void onShowSettings() {
+                showSettings();
+            }
+
+            @Override
+            public void onShowAbout() {
+                showAbout();
+            }
+
+            @Override
+            public void onConnectBookmark(Bookmark bookmark) {
+                connectToBookmark(bookmark);
+            }
+
+            @Override
+            public void onAddCurrentServerBookmark() {
+                addCurrentServerBookmark();
+            }
+
+            @Override
+            public void onManageBookmarks() {
+                new BookmarksDialog(MainFrame.this, bookmarks, identities,
+                        MainFrame.this::connectToBookmark, menuBar::rebuildBookmarks).setVisible(true);
+            }
         });
-        JMenuItem nick = new JMenuItem("Change nickname…", Icons.of("CHANGE_NICKNAME"));
-        nick.addActionListener(e -> changeNickname());
-        self.add(mute);
-        self.add(deaf);
-        self.addSeparator();
-        self.add(awayItem);
-        self.add(awayStatusItem);
-        self.add(commanderItem);
-        self.addSeparator();
-        self.add(nick);
-
-        JMenu tools = new JMenu("Tools");
-        JMenuItem identitiesItem = new JMenuItem("Identities…", Icons.of("IDENTITY_MANAGER"));
-        identitiesItem.addActionListener(e -> showIdentities());
-        JMenuItem options = new JMenuItem("Options…", Icons.of("SETTINGS"));
-        options.addActionListener(e -> showSettings());
-        tools.add(identitiesItem);
-        tools.addSeparator();
-        tools.add(options);
-
-        JMenu help = new JMenu("Help");
-        JMenuItem about = new JMenuItem("About", Icons.of("ABOUT"));
-        about.addActionListener(e -> showAbout());
-        help.add(about);
-
-        bar.add(connections);
-        bar.add(bookmarksMenu);
-        bar.add(self);
-        bar.add(tools);
-        bar.add(help);
-        return bar;
     }
 
-    private void rebuildBookmarksMenu() {
+    private MainToolbar buildToolbar() {
-        bookmarksMenu.removeAll();
+        return new MainToolbar(settings, new MainToolbar.Listener() {
-        for (Bookmark b : bookmarks.all()) {
+            @Override
-            JMenuItem item = new JMenuItem(b.displayName(), Icons.of("SERVER_GREEN"));
+            public void onConnect() {
-            item.addActionListener(e -> connectToBookmark(b));
+                showConnectDialog();
-            bookmarksMenu.add(item);
+            }
-        }
-        if (!bookmarks.all().isEmpty()) bookmarksMenu.addSeparator();
-        JMenuItem addCurrent = new JMenuItem("Add current server…", Icons.of("BOOKMARK_ADD"));
-        addCurrent.addActionListener(e -> addCurrentServerBookmark());
-        JMenuItem manage = new JMenuItem("Manage bookmarks…", Icons.of("BOOKMARK_MANAGER"));
-        manage.addActionListener(e -> new BookmarksDialog(this, bookmarks, identities,
-                this::connectToBookmark, this::rebuildBookmarksMenu).setVisible(true));
-        bookmarksMenu.add(addCurrent);
-        bookmarksMenu.add(manage);
-    }
 
-    private JToolBar buildToolbar() {
+            @Override
-        JToolBar tb = new JToolBar();
+            public void onDisconnect() {
-        tb.setFloatable(false);
+                doDisconnect();
-        tb.setBackground(Theme.TOOLBAR_BG);
+            }
-        tb.setBorder(BorderFactory.createEmptyBorder(4, 6, 4, 6));
 
-        connectButton = new JButton(Icons.connect());
+            @Override
-        connectButton.setToolTipText("Connect to a server");
+            public void onActivate() {
-        connectButton.addActionListener(e -> showConnectDialog());
+                moveMicrophoneToSelectedTab();
+            }
 
-        disconnectButton = new JButton(Icons.disconnect());
+            @Override
-        disconnectButton.setToolTipText("Disconnect");
+            public void onMicMuteToggle(boolean muted) {
-        disconnectButton.addActionListener(e -> doDisconnect());
+                if (selected == null) return;
+                selected.setMicMuted(muted);
+                updateToolbar();
+            }
 
-        activeButton = new JToggleButton(Icons.micActive());
+            @Override
-        activeButton.setToolTipText("Speak on this server (moves the microphone to this tab)");
+            public void onDeafenToggle(boolean deafened) {
-        activeButton.addActionListener(e -> {
+                if (selected == null) return;
-            if (selected != null && selected.isConnected()) setMicTab(selected);
+                selected.setDeafened(deafened);
-            updateToolbar();
+                updateToolbar();
+            }
+
+            @Override
+            public void onAwayToggle(boolean away) {
+                toggleAway(away);
+            }
+
+            @Override
+            public JPopupMenu buildAwayMenu() {
+                return MainFrame.this.buildAwayMenu();
+            }
+
+            @Override
+            public void onSettings() {
+                showSettings();
+            }
+
+            @Override
+            public void onMasterVolumeChanged() {
+                applyOutputSettingsToAllTabs();
+            }
+
+            @Override
+            public void onStatusBarVisibilityChanged(boolean visible) {
+                statusBar.setVisible(visible);
+                revalidate();
+                repaint();
+            }
         });
-
-        micButton = new JToggleButton(Icons.mic());
-        micButton.setToolTipText("Mute / unmute microphone on this server");
-        micButton.addActionListener(e -> {
-            if (selected == null) return;
-            selected.setMicMuted(micButton.isSelected());
-            updateToolbar();
-        });
-
-        speakerButton = new JToggleButton(Icons.speaker());
-        speakerButton.setToolTipText("Deafen / undeafen (mute speakers) on this server");
-        speakerButton.addActionListener(e -> {
-            if (selected == null) return;
-            selected.setDeafened(speakerButton.isSelected());
-            updateToolbar();
-        });
-
-        awayButton = new DropDownToggleButton(Icons.away(),
-                "Away on this server (the arrow offers the global actions and presets)",
-                this::buildAwayMenu);
-        awayButton.addActionListener(e -> {
-            if (selected == null) return;
-            // The plain toggle carries no message; the menu is where messages are chosen.
-            selected.setAway(awayButton.isSelected(), "");
-            updateToolbar();
-        });
-
-        JButton settingsButton = new JButton(Icons.settings());
-        settingsButton.setToolTipText("Options");
-        settingsButton.addActionListener(e -> showSettings());
-
-        tb.add(connectButton);
-        tb.add(disconnectButton);
-        tb.addSeparator();
-        tb.add(activeButton);
-        tb.add(micButton);
-        tb.add(speakerButton);
-        tb.add(awayButton);
-        tb.addSeparator();
-        tb.add(settingsButton);
-        tb.add(Box.createHorizontalGlue());
-        return tb;
     }
 
     /** Rebuilds the icon-bearing chrome after the active icon pack changed. */
     private void rebuildIcons() {
         setIconImage(Icons.app().getImage());
-        setJMenuBar(buildMenuBar());
+        menuBar = buildMenuBar();
+        setJMenuBar(menuBar);
         remove(toolbar);
         toolbar = buildToolbar();
         add(toolbar, BorderLayout.NORTH);
@@ -314,18 +294,6 @@ public final class MainFrame extends JFrame implements ServerTabPane.Listener {
         repaint();
     }
 
-    private JPanel buildStatusBar() {
-        JPanel bar = new JPanel(new BorderLayout());
-        bar.setBackground(Theme.STATUS_BG);
-        bar.setBorder(BorderFactory.createEmptyBorder(3, 8, 3, 8));
-        statusLabel.setFont(Theme.UI_FONT);
-        codecLabel.setFont(Theme.UI_FONT);
-        codecLabel.setForeground(Theme.CHAT_SYSTEM);
-        bar.add(statusLabel, BorderLayout.WEST);
-        bar.add(codecLabel, BorderLayout.EAST);
-        return bar;
-    }
-
     // ---- tab management ----
 
     private ServerTab newTab() {
@@ -646,7 +614,7 @@ public final class MainFrame extends JFrame implements ServerTabPane.Listener {
         if (joinChannel.isSelected()) bookmark.channel = channelPath;
         bookmarks.add(bookmark);
         bookmarks.save();
-        rebuildBookmarksMenu();
+        menuBar.rebuildBookmarks();
     }
 
     /** The away button's drop-down: the global actions, the presets and their editor. */
@@ -683,9 +651,9 @@ public final class MainFrame extends JFrame implements ServerTabPane.Listener {
         return menu;
     }
 
-    private void toggleAway() {
+    private void toggleAway(boolean away) {
         if (selected == null) return;
-        selected.setAway(awayItem.isSelected(), "");
+        selected.setAway(away, "");
         updateToolbar();
     }
 
@@ -783,7 +751,7 @@ public final class MainFrame extends JFrame implements ServerTabPane.Listener {
         soundPlayer.setOutputDevice(settings.outputDevice);
         for (ServerTab tab : tabs) {
             if (tab.connection().getPlayback() == null) continue;
-            tab.connection().getPlayback().setMasterVolume(settings.outputVolume);
+            tab.connection().getPlayback().setMasterVolume(settings.effectiveOutputVolume());
             tab.connection().getPlayback().setOutputDevice(settings.outputDevice);
         }
     }
@@ -803,7 +771,7 @@ public final class MainFrame extends JFrame implements ServerTabPane.Listener {
                         "An open-source TeamSpeak 3 desktop client built on the ts3j\n" +
                         "reverse-engineered protocol library, with native Opus voice,\n" +
                         "voice-activation detection and push-to-talk.\n\n" +
-                        codecLabel.getText(),
+                        statusBar.codecText(),
                 "About TS3J", JOptionPane.INFORMATION_MESSAGE);
     }
 
@@ -811,28 +779,15 @@ public final class MainFrame extends JFrame implements ServerTabPane.Listener {
 
     private void updateToolbar() {
         boolean connected = selected != null && selected.isConnected();
-        disconnectButton.setEnabled(connected);
+        boolean anyConnected = tabs.stream().anyMatch(ServerTab::isConnected);
-        micButton.setEnabled(connected);
-        speakerButton.setEnabled(connected);
-        activeButton.setEnabled(connected);
-        awayItem.setEnabled(connected);
-        awayStatusItem.setEnabled(connected);
-        // The menu's actions are global, so the arrow stays live while any server is up.
-        awayButton.setEnabled(tabs.stream().anyMatch(ServerTab::isConnected));
-        awayButton.setToggleEnabled(connected);
-        commanderItem.setEnabled(connected);
 
         boolean micMuted = connected && selected.isMicMuted();
         boolean deaf = connected && selected.isDeafened();
-        micButton.setSelected(micMuted);
+        boolean active = selected != null && selected == micTab;
-        micButton.setIcon(micMuted ? Icons.micMutedLarge() : Icons.mic());
-        speakerButton.setSelected(deaf);
-        speakerButton.setIcon(deaf ? Icons.speakerMutedLarge() : Icons.speaker());
-        activeButton.setSelected(selected != null && selected == micTab);
         boolean away = connected && selected.isAway();
-        awayItem.setSelected(away);
+        boolean commander = connected && selected.isCommander();
-        awayButton.setSelected(away);
+        toolbar.refresh(connected, anyConnected, micMuted, deaf, active, away);
-        commanderItem.setSelected(connected && selected.isCommander());
+        menuBar.refresh(connected, away, commander);
         updateTray();
     }
 
@@ -856,7 +811,7 @@ public final class MainFrame extends JFrame implements ServerTabPane.Listener {
     }
 
     private void updateStatusLabel() {
-        statusLabel.setText(selected == null ? "Not connected" : selected.status());
+        statusBar.setStatus(selected == null ? "Not connected" : selected.status());
     }
 
     private void updateConnectionStatus() {
@@ -869,6 +824,6 @@ public final class MainFrame extends JFrame implements ServerTabPane.Listener {
         double ping = tab.connection().getPingMillis();
         if (ping >= 0) s.append("  |  ping ").append(Math.round(ping)).append(" ms");
         if (tab != micTab) s.append("  |  microphone on another tab");
-        statusLabel.setText(s.toString());
+        statusBar.setStatus(s.toString());
     }
 }

ts3-client/swing/src/main/java/com/ts3client/ui/MainMenuBar.java

@@ -0,0 +1,155 @@
+package com.ts3client.ui;
+
+import com.ts3client.config.Bookmark;
+import com.ts3client.config.Bookmarks;
+
+import javax.swing.JCheckBoxMenuItem;
+import javax.swing.JMenu;
+import javax.swing.JMenuBar;
+import javax.swing.JMenuItem;
+import javax.swing.KeyStroke;
+
+/**
+ * The main window's menu bar: Connections, Bookmarks, Self, Tools and Help.
+ * Talks to {@link MainFrame} only through {@link Listener}; the away/commander
+ * item states are pushed in by {@link #refresh}, mirroring how {@link MainToolbar}
+ * is kept in sync.
+ */
+final class MainMenuBar extends JMenuBar {
+
+    interface Listener {
+        void onConnect();
+
+        void onDisconnect();
+
+        void onCloseTab();
+
+        void onQuit();
+
+        void onToggleMic();
+
+        void onToggleSpeaker();
+
+        /** The plain toggle carries no message; "Set away status…" is where messages are chosen. */
+        void onAwayToggle(boolean away);
+
+        void onAwayStatus();
+
+        void onCommanderToggle(boolean commander);
+
+        void onChangeNickname();
+
+        void onShowIdentities();
+
+        void onShowSettings();
+
+        void onShowAbout();
+
+        void onConnectBookmark(Bookmark bookmark);
+
+        void onAddCurrentServerBookmark();
+
+        void onManageBookmarks();
+    }
+
+    private final Bookmarks bookmarks;
+    private final Listener listener;
+
+    private JMenu bookmarksMenu;
+    private JCheckBoxMenuItem awayItem;
+    private JMenuItem awayStatusItem;
+    private JCheckBoxMenuItem commanderItem;
+
+    MainMenuBar(Bookmarks bookmarks, Listener listener) {
+        this.bookmarks = bookmarks;
+        this.listener = listener;
+
+        JMenu connections = new JMenu("Connections");
+        JMenuItem connect = new JMenuItem("Connect…", Icons.of("CONNECT"));
+        connect.setAccelerator(KeyStroke.getKeyStroke("control S"));
+        connect.addActionListener(e -> listener.onConnect());
+        JMenuItem disconnect = new JMenuItem("Disconnect", Icons.of("DISCONNECT"));
+        disconnect.addActionListener(e -> listener.onDisconnect());
+        JMenuItem closeTab = new JMenuItem("Close tab", Icons.of("CLOSE_BUTTON"));
+        closeTab.setAccelerator(KeyStroke.getKeyStroke("control W"));
+        closeTab.addActionListener(e -> listener.onCloseTab());
+        JMenuItem quit = new JMenuItem("Quit", Icons.of("QUIT"));
+        quit.addActionListener(e -> listener.onQuit());
+        connections.add(connect);
+        connections.add(disconnect);
+        connections.add(closeTab);
+        connections.addSeparator();
+        connections.add(quit);
+
+        bookmarksMenu = new JMenu("Bookmarks");
+        rebuildBookmarks();
+
+        JMenu self = new JMenu("Self");
+        JMenuItem mute = new JMenuItem("Toggle microphone", Icons.of("CAPTURE"));
+        mute.addActionListener(e -> listener.onToggleMic());
+        JMenuItem deaf = new JMenuItem("Toggle speakers", Icons.of("PLAYBACK"));
+        deaf.addActionListener(e -> listener.onToggleSpeaker());
+        awayItem = new JCheckBoxMenuItem("Away", Icons.of("AWAY"), false);
+        awayItem.addActionListener(e -> listener.onAwayToggle(awayItem.isSelected()));
+        awayStatusItem = new JMenuItem("Set away status…", Icons.of("EDIT"));
+        awayStatusItem.addActionListener(e -> listener.onAwayStatus());
+        commanderItem = new JCheckBoxMenuItem("Channel commander", Icons.of("CHANNEL_COMMANDER"), false);
+        commanderItem.addActionListener(e -> listener.onCommanderToggle(commanderItem.isSelected()));
+        JMenuItem nick = new JMenuItem("Change nickname…", Icons.of("CHANGE_NICKNAME"));
+        nick.addActionListener(e -> listener.onChangeNickname());
+        self.add(mute);
+        self.add(deaf);
+        self.addSeparator();
+        self.add(awayItem);
+        self.add(awayStatusItem);
+        self.add(commanderItem);
+        self.addSeparator();
+        self.add(nick);
+
+        JMenu tools = new JMenu("Tools");
+        JMenuItem identitiesItem = new JMenuItem("Identities…", Icons.of("IDENTITY_MANAGER"));
+        identitiesItem.addActionListener(e -> listener.onShowIdentities());
+        JMenuItem options = new JMenuItem("Options…", Icons.of("SETTINGS"));
+        options.addActionListener(e -> listener.onShowSettings());
+        tools.add(identitiesItem);
+        tools.addSeparator();
+        tools.add(options);
+
+        JMenu help = new JMenu("Help");
+        JMenuItem about = new JMenuItem("About", Icons.of("ABOUT"));
+        about.addActionListener(e -> listener.onShowAbout());
+        help.add(about);
+
+        add(connections);
+        add(bookmarksMenu);
+        add(self);
+        add(tools);
+        add(help);
+    }
+
+    /** Reflects the current tab's away/commander state on the menu items. */
+    void refresh(boolean connected, boolean away, boolean commander) {
+        awayItem.setEnabled(connected);
+        awayStatusItem.setEnabled(connected);
+        commanderItem.setEnabled(connected);
+        awayItem.setSelected(away);
+        commanderItem.setSelected(commander);
+    }
+
+    /** Re-lists the saved bookmarks; called after they change (add, remove, manage…). */
+    void rebuildBookmarks() {
+        bookmarksMenu.removeAll();
+        for (Bookmark b : bookmarks.all()) {
+            JMenuItem item = new JMenuItem(b.displayName(), Icons.of("SERVER_GREEN"));
+            item.addActionListener(e -> listener.onConnectBookmark(b));
+            bookmarksMenu.add(item);
+        }
+        if (!bookmarks.all().isEmpty()) bookmarksMenu.addSeparator();
+        JMenuItem addCurrent = new JMenuItem("Add current server…", Icons.of("BOOKMARK_ADD"));
+        addCurrent.addActionListener(e -> listener.onAddCurrentServerBookmark());
+        JMenuItem manage = new JMenuItem("Manage bookmarks…", Icons.of("BOOKMARK_MANAGER"));
+        manage.addActionListener(e -> listener.onManageBookmarks());
+        bookmarksMenu.add(addCurrent);
+        bookmarksMenu.add(manage);
+    }
+}

ts3-client/swing/src/main/java/com/ts3client/ui/MainToolbar.java

@@ -0,0 +1,226 @@
+package com.ts3client.ui;
+
+import com.ts3client.config.Settings;
+
+import javax.swing.BorderFactory;
+import javax.swing.Box;
+import javax.swing.JButton;
+import javax.swing.JCheckBoxMenuItem;
+import javax.swing.JComponent;
+import javax.swing.JLabel;
+import javax.swing.JPanel;
+import javax.swing.JPopupMenu;
+import javax.swing.JSlider;
+import javax.swing.JToggleButton;
+import javax.swing.JToolBar;
+import javax.swing.event.PopupMenuEvent;
+import javax.swing.event.PopupMenuListener;
+import java.awt.Component;
+import java.awt.Dimension;
+import java.awt.FlowLayout;
+
+/**
+ * The main window's toolbar: connect/disconnect, the per-tab mic/speaker/away
+ * controls, and the Master Volume slider on the right. A right-click anywhere on
+ * the bar opens a customization menu for the window's optional chrome (this
+ * toolbar has no say over the status bar's own visibility beyond reporting the
+ * toggle).
+ *
+ * <p>Talks to {@link MainFrame} only through {@link Listener}, so it owns no
+ * connection/tab state itself &mdash; {@link #refresh} is handed everything it
+ * needs to redraw each time the selection changes.
+ */
+final class MainToolbar extends JToolBar {
+
+    interface Listener {
+        void onConnect();
+
+        void onDisconnect();
+
+        /** Moves the microphone to the tab on screen. */
+        void onActivate();
+
+        void onMicMuteToggle(boolean muted);
+
+        void onDeafenToggle(boolean deafened);
+
+        /** The plain toggle carries no message; the drop-down arrow is where messages are chosen. */
+        void onAwayToggle(boolean away);
+
+        JPopupMenu buildAwayMenu();
+
+        void onSettings();
+
+        /** The slider changed; push the new master volume to every open connection. */
+        void onMasterVolumeChanged();
+
+        void onStatusBarVisibilityChanged(boolean visible);
+    }
+
+    private final Settings settings;
+    private final Listener listener;
+
+    private final JButton connectButton;
+    private final JButton disconnectButton;
+    private final JToggleButton activeButton;
+    private final JToggleButton micButton;
+    private final JToggleButton speakerButton;
+    private final DropDownToggleButton awayButton;
+    private final JComponent masterVolumePanel;
+
+    MainToolbar(Settings settings, Listener listener) {
+        this.settings = settings;
+        this.listener = listener;
+
+        setFloatable(false);
+        setBackground(Theme.toolbarBg());
+        setBorder(BorderFactory.createEmptyBorder(4, 6, 4, 6));
+        setComponentPopupMenu(buildContextMenu());
+
+        connectButton = new JButton(Icons.connect());
+        connectButton.setToolTipText("Connect to a server");
+        connectButton.addActionListener(e -> listener.onConnect());
+
+        disconnectButton = new JButton(Icons.disconnect());
+        disconnectButton.setToolTipText("Disconnect");
+        disconnectButton.addActionListener(e -> listener.onDisconnect());
+
+        activeButton = new JToggleButton(Icons.micActive());
+        activeButton.setToolTipText("Speak on this server (moves the microphone to this tab)");
+        activeButton.addActionListener(e -> listener.onActivate());
+
+        micButton = new JToggleButton(Icons.mic());
+        micButton.setToolTipText("Mute / unmute microphone on this server");
+        micButton.addActionListener(e -> listener.onMicMuteToggle(micButton.isSelected()));
+
+        speakerButton = new JToggleButton(Icons.speaker());
+        speakerButton.setToolTipText("Deafen / undeafen (mute speakers) on this server");
+        speakerButton.addActionListener(e -> listener.onDeafenToggle(speakerButton.isSelected()));
+
+        awayButton = new DropDownToggleButton(Icons.away(),
+                "Away on this server (the arrow offers the global actions and presets)",
+                listener::buildAwayMenu);
+        awayButton.addActionListener(e -> listener.onAwayToggle(awayButton.isSelected()));
+
+        JButton settingsButton = new JButton(Icons.settings());
+        settingsButton.setToolTipText("Options");
+        settingsButton.addActionListener(e -> listener.onSettings());
+
+        add(connectButton);
+        add(disconnectButton);
+        addSeparator();
+        add(activeButton);
+        add(micButton);
+        add(speakerButton);
+        add(awayButton);
+        addSeparator();
+        add(settingsButton);
+        add(Box.createHorizontalGlue());
+        masterVolumePanel = buildMasterVolumeControl();
+        masterVolumePanel.setVisible(settings.showMasterVolumeSlider);
+        add(masterVolumePanel);
+    }
+
+    /** Reflects the current tab's state on the buttons. */
+    void refresh(boolean connected, boolean anyConnected, boolean micMuted, boolean deafened,
+                boolean active, boolean away) {
+        disconnectButton.setEnabled(connected);
+        micButton.setEnabled(connected);
+        speakerButton.setEnabled(connected);
+        activeButton.setEnabled(connected);
+        // The away menu's actions are global, so the arrow stays live while any server is up.
+        awayButton.setEnabled(anyConnected);
+        awayButton.setToggleEnabled(connected);
+
+        micButton.setSelected(micMuted);
+        micButton.setIcon(micMuted ? Icons.micMutedLarge() : Icons.mic());
+        speakerButton.setSelected(deafened);
+        speakerButton.setIcon(deafened ? Icons.speakerMutedLarge() : Icons.speaker());
+        activeButton.setSelected(active);
+        awayButton.setSelected(away);
+    }
+
+    /** Simulates a click, for the "Toggle microphone" menu item. */
+    void clickMic() {
+        micButton.doClick();
+    }
+
+    /** Simulates a click, for the "Toggle speakers" menu item. */
+    void clickSpeaker() {
+        speakerButton.doClick();
+    }
+
+    /** The Master Volume slider: multiplies both voice and notification volume. */
+    private JComponent buildMasterVolumeControl() {
+        JPanel panel = new JPanel(new FlowLayout(FlowLayout.RIGHT, 4, 0));
+        panel.setOpaque(false);
+        panel.setAlignmentY(Component.CENTER_ALIGNMENT);
+
+        JLabel icon = new JLabel(Icons.speaker());
+        icon.setToolTipText("Master volume (voice + notifications)");
+        icon.setAlignmentY(Component.CENTER_ALIGNMENT);
+
+        JSlider slider = new JSlider(0, 200, (int) Math.round(settings.masterVolume * 100));
+        slider.setOpaque(false);
+        slider.setToolTipText("Master volume (voice + notifications) — scroll to adjust");
+        slider.setAlignmentY(Component.CENTER_ALIGNMENT);
+        slider.setPreferredSize(new Dimension(135, slider.getPreferredSize().height));
+        slider.addChangeListener(e -> {
+            settings.masterVolume = slider.getValue() / 100.0;
+            listener.onMasterVolumeChanged();
+            // Only touch the disk once the drag (or a wheel step) has settled.
+            if (!slider.getValueIsAdjusting()) settings.save();
+        });
+        slider.addMouseWheelListener(e -> {
+            int step = e.getWheelRotation() < 0 ? 5 : -5;
+            slider.setValue(slider.getValue() + step);
+            e.consume();
+        });
+
+        panel.add(icon);
+        panel.add(slider);
+        return panel;
+    }
+
+    /** Right-click on the toolbar: toggles for the window's optional chrome. */
+    private JPopupMenu buildContextMenu() {
+        JPopupMenu menu = new JPopupMenu();
+
+        JCheckBoxMenuItem statusBarItem = new JCheckBoxMenuItem("Show Status Bar", settings.showStatusBar);
+        statusBarItem.addActionListener(e -> {
+            settings.showStatusBar = statusBarItem.isSelected();
+            settings.save();
+            listener.onStatusBarVisibilityChanged(settings.showStatusBar);
+        });
+
+        JCheckBoxMenuItem volumeItem = new JCheckBoxMenuItem("Show Master Volume Slider", settings.showMasterVolumeSlider);
+        volumeItem.addActionListener(e -> {
+            settings.showMasterVolumeSlider = volumeItem.isSelected();
+            settings.save();
+            masterVolumePanel.setVisible(settings.showMasterVolumeSlider);
+            revalidate();
+            repaint();
+        });
+
+        menu.add(statusBarItem);
+        menu.add(volumeItem);
+        // Either toggle can also be flipped elsewhere (or via settings.properties), so
+        // re-sync the ticks each time the menu is about to be shown.
+        menu.addPopupMenuListener(new PopupMenuListener() {
+            @Override
+            public void popupMenuWillBecomeVisible(PopupMenuEvent e) {
+                statusBarItem.setSelected(settings.showStatusBar);
+                volumeItem.setSelected(settings.showMasterVolumeSlider);
+            }
+
+            @Override
+            public void popupMenuWillBecomeInvisible(PopupMenuEvent e) {
+            }
+
+            @Override
+            public void popupMenuCanceled(PopupMenuEvent e) {
+            }
+        });
+        return menu;
+    }
+}

ts3-client/swing/src/main/java/com/ts3client/ui/NicknameCellEditor.java

@@ -0,0 +1,124 @@
+package com.ts3client.ui;
+
+import com.ts3client.net.ClientEntry;
+
+import javax.swing.DefaultCellEditor;
+import javax.swing.JLabel;
+import javax.swing.JTextField;
+import javax.swing.JTree;
+import javax.swing.SwingUtilities;
+import javax.swing.Timer;
+import javax.swing.tree.DefaultMutableTreeNode;
+import javax.swing.tree.DefaultTreeCellEditor;
+import javax.swing.tree.DefaultTreeCellRenderer;
+import javax.swing.tree.TreePath;
+import java.awt.Component;
+import java.awt.event.MouseEvent;
+import java.util.EventObject;
+import java.util.function.IntPredicate;
+
+/**
+ * Turns our own row in the server tree into a text field on a double click, the way
+ * TeamSpeak renames a client in place. Only that one row is editable; every other
+ * double click keeps its usual meaning (joining a channel, opening a chat).
+ *
+ * <p>The field opens on the current nickname with it selected, so typing replaces it,
+ * Enter commits and Escape leaves the name alone.
+ */
+final class NicknameCellEditor extends DefaultTreeCellEditor {
+
+    /** Pulls the field left by its own border, so the text sits where the label did. */
+    private static final int FIELD_NUDGE = 2;
+
+    /** Long enough for the click's own release to have been handled first. */
+    private static final int SELECT_DELAY_MS = 80;
+
+    private final JTextField field;
+    /** Whether a client id is our own — the tree learns ours only once connected. */
+    private final IntPredicate isSelf;
+
+    private NicknameCellEditor(JTree tree, DefaultTreeCellRenderer renderer, JTextField field,
+                               IntPredicate isSelf) {
+        super(tree, renderer, new DefaultCellEditor(field));
+        this.field = field;
+        this.isSelf = isSelf;
+    }
+
+    static NicknameCellEditor create(JTree tree, DefaultTreeCellRenderer renderer, IntPredicate isSelf) {
+        JTextField field = new JTextField();
+        // Only our own row is edited, and that name is bold in the tree.
+        field.setFont(Theme.uiBold());
+        return new NicknameCellEditor(tree, renderer, field, isSelf);
+    }
+
+    /** Whether a path is the row this editor works on. */
+    boolean editsPath(TreePath path) {
+        ClientEntry client = clientOf(path);
+        return client != null && isSelf.test(client.id);
+    }
+
+    /**
+     * Editing is started by the tree's own double-click handling, which works a row by
+     * its whole line; Swing's would only see clicks that land on the label, and its
+     * click-pause-click timer would rename on clicks meant as a selection.
+     */
+    @Override
+    public boolean isCellEditable(EventObject event) {
+        return !(event instanceof MouseEvent);
+    }
+
+    @Override
+    public Component getTreeCellEditorComponent(JTree tree, Object value, boolean isSelected,
+                                                boolean expanded, boolean leaf, int row) {
+        // The node itself has to reach super, whose renderer measures the row from it;
+        // the text it derives is the node's toString, so the nickname is filled in after.
+        Component c = super.getTreeCellEditorComponent(tree, value, isSelected, expanded, leaf, row);
+        ClientEntry client = clientOf(value);
+        if (client != null) {
+            field.setText(client.nickname);
+            field.selectAll();
+        }
+        SwingUtilities.invokeLater(field::requestFocusInWindow);
+        // The double click that opened the field ends in a release, which a text
+        // component turns into a caret placement — undoing any selection made before
+        // it. Selecting after that has been delivered is what leaves the whole name
+        // selected, ready to be typed over.
+        Timer select = new Timer(SELECT_DELAY_MS, e -> field.selectAll());
+        select.setRepeats(false);
+        select.start();
+        return c;
+    }
+
+    /**
+     * Keeps the row's own icon while it is being edited. The inherited version knows
+     * only the renderer's default leaf/branch icons, which would swap a client's state
+     * icon for a blank page for as long as the field is open.
+     */
+    @Override
+    protected void determineOffset(JTree tree, Object value, boolean isSelected, boolean expanded,
+                                   boolean leaf, int row) {
+        super.determineOffset(tree, value, isSelected, expanded, leaf, row);
+        Component c = renderer.getTreeCellRendererComponent(tree, value, isSelected, expanded, leaf,
+                row, false);
+        if (!(c instanceof JLabel)) return;
+        editingIcon = ((JLabel) c).getIcon();
+        offset = editingIcon == null ? 0
+                : editingIcon.getIconWidth() + renderer.getIconTextGap() - FIELD_NUDGE;
+    }
+
+    /** The edited nickname, trimmed; empty when nothing usable was typed. */
+    String editedNickname() {
+        String text = field.getText();
+        return text == null ? "" : text.trim();
+    }
+
+    private static ClientEntry clientOf(TreePath path) {
+        return path == null ? null : clientOf(path.getLastPathComponent());
+    }
+
+    private static ClientEntry clientOf(Object node) {
+        if (!(node instanceof DefaultMutableTreeNode)) return null;
+        Object obj = ((DefaultMutableTreeNode) node).getUserObject();
+        return obj instanceof ClientEntry ? (ClientEntry) obj : null;
+    }
+}

ts3-client/swing/src/main/java/com/ts3client/ui/ServerGroupsDialog.java

@@ -0,0 +1,117 @@
+package com.ts3client.ui;
+
+import com.ts3client.net.ClientEntry;
+import com.ts3client.net.Group;
+import com.ts3client.net.TeamspeakConnection;
+
+import javax.swing.BorderFactory;
+import javax.swing.BoxLayout;
+import javax.swing.GrayFilter;
+import javax.swing.ImageIcon;
+import javax.swing.JButton;
+import javax.swing.JCheckBox;
+import javax.swing.JDialog;
+import javax.swing.JLabel;
+import javax.swing.JPanel;
+import javax.swing.JScrollPane;
+import javax.swing.SwingConstants;
+import java.awt.BorderLayout;
+import java.awt.Dimension;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Every regular server group on the server, as a scrollable checkbox list. Groups
+ * the local client has no power to (un)assign are shown too, so the client's full
+ * membership is visible, but greyed out and disabled.
+ */
+final class ServerGroupsDialog extends JDialog {
+
+    private final TeamspeakConnection conn;
+    private final GroupIcons groupIcons;
+    private final int clientId;
+    private final ServerTreePanel.Actions actions;
+
+    private final JPanel list = new JPanel();
+    private final JLabel header = new JLabel();
+    /** Cached grayscale icons, keyed by the source icon's identity. */
+    private final Map<ImageIcon, ImageIcon> grayscale = new HashMap<>();
+
+    ServerGroupsDialog(MainFrame owner, TeamspeakConnection conn, GroupIcons groupIcons,
+                        ClientEntry client, ServerTreePanel.Actions actions) {
+        super(owner, "Server Groups", true);
+        this.conn = conn;
+        this.groupIcons = groupIcons;
+        this.clientId = client.id;
+        this.actions = actions;
+
+        list.setLayout(new BoxLayout(list, BoxLayout.Y_AXIS));
+        JScrollPane scroll = new JScrollPane(list);
+        scroll.setPreferredSize(new Dimension(280, 360));
+        scroll.getVerticalScrollBar().setUnitIncrement(16);
+
+        header.setBorder(BorderFactory.createEmptyBorder(8, 10, 4, 10));
+        header.setHorizontalAlignment(SwingConstants.LEFT);
+
+        JButton close = new JButton("Close");
+        close.addActionListener(a -> dispose());
+        JPanel buttons = new JPanel();
+        buttons.add(close);
+        getRootPane().setDefaultButton(close);
+
+        getContentPane().setLayout(new BorderLayout());
+        getContentPane().add(header, BorderLayout.NORTH);
+        getContentPane().add(scroll, BorderLayout.CENTER);
+        getContentPane().add(buttons, BorderLayout.SOUTH);
+
+        Dialogs.closeOnEscape(this);
+        setDefaultCloseOperation(DISPOSE_ON_CLOSE);
+        refresh();
+        pack();
+        setLocationRelativeTo(owner);
+    }
+
+    /** Rebuilds the list from the current model state; closes the dialog if the client left. */
+    void refresh() {
+        ClientEntry client = conn.getModel().getClient(clientId);
+        if (client == null) {
+            dispose();
+            return;
+        }
+        header.setText(client.nickname);
+
+        int addPower = conn.getModel().selfPermissionValue("i_group_needed_member_add_power");
+        int removePower = conn.getModel().selfPermissionValue("i_group_needed_member_remove_power");
+        List<Group> groups = conn.getModel().allServerGroups();
+
+        list.removeAll();
+        for (Group g : groups) {
+            boolean assigned = contains(client.serverGroupIds, g.id);
+            boolean allowed = ClientMenu.canAssign(g, assigned, addPower, removePower);
+
+            ImageIcon icon = groupIcons.iconOf(g);
+            JCheckBox box = new JCheckBox(g.name, allowed ? icon : grayscale(icon));
+            box.setSelected(assigned);
+            box.setEnabled(allowed);
+            box.setAlignmentX(0f);
+            if (allowed) {
+                box.addActionListener(a -> actions.setClientServerGroup(client, g, box.isSelected()));
+            }
+            list.add(box);
+        }
+        list.revalidate();
+        list.repaint();
+    }
+
+    private ImageIcon grayscale(ImageIcon icon) {
+        if (icon == null) return null;
+        return grayscale.computeIfAbsent(icon,
+                i -> new ImageIcon(GrayFilter.createDisabledImage(i.getImage())));
+    }
+
+    private static boolean contains(int[] ids, int id) {
+        for (int i : ids) if (i == id) return true;
+        return false;
+    }
+}

ts3-client/swing/src/main/java/com/ts3client/ui/ServerMenu.java

@@ -0,0 +1,28 @@
+package com.ts3client.ui;
+
+import com.ts3client.net.ChannelSettings;
+
+import javax.swing.JMenuItem;
+import javax.swing.JPopupMenu;
+
+/**
+ * The context menu for the server itself — the tree's root row.
+ */
+final class ServerMenu {
+
+    private ServerMenu() {
+    }
+
+    static JPopupMenu build(ServerTreePanel.Actions actions) {
+        JPopupMenu menu = new JPopupMenu();
+        JMenuItem create = new JMenuItem("Create Channel", Icons.of("CHANNEL_CREATE"));
+        create.addActionListener(a -> actions.createChannel(null, ChannelSettings.Type.PERMANENT));
+        menu.add(create);
+        JMenuItem spacer = new JMenuItem("Create Spacer",
+                Icons.ofAny("CHANNEL_CREATE_SPACER", "CHANNEL_CREATE"));
+        spacer.setToolTipText("Create a new spacer");
+        spacer.addActionListener(a -> actions.createSpacer());
+        menu.add(spacer);
+        return menu;
+    }
+}

ts3-client/swing/src/main/java/com/ts3client/ui/ServerTab.java

@@ -6,13 +6,11 @@ import com.ts3client.config.IdentityStore;
 import com.ts3client.config.Settings;
 import com.ts3client.net.ChannelNode;
 import com.ts3client.net.ClientEntry;
-import com.ts3client.net.ConnectionListener;
 import com.ts3client.net.TeamspeakConnection;
 import com.ts3client.sound.SoundNotifier;
 import com.ts3client.text.TsLink;
 
 import javax.swing.JComponent;
-import javax.swing.JOptionPane;
 import javax.swing.JSplitPane;
 import javax.swing.SwingUtilities;
 import java.util.ArrayList;
@@ -24,10 +22,12 @@ import java.awt.Component;
  * client keeps several of these side by side; {@link MainFrame} shows one at a
  * time and owns the toolbar, menus and status bar that act on it.
  *
- * <p>Everything that is per-server lives here: the connection, its microphone
+ * <p>ServerTab itself owns the connection, the panels and this tab's identity
- * and speaker mute state, the away/commander flags and the chat history.
+ * (title/status); the mic/away/deafen flags live in {@link ServerTabSelfState},
+ * tree context-menu actions and selection in {@link ServerTabTreeActions}, and
+ * {@link com.ts3client.net.ConnectionListener} callbacks in {@link ServerTabConnectionEvents}.
  */
-final class ServerTab implements ConnectionListener, ServerTreePanel.Actions {
+final class ServerTab implements ServerTabConnectionEvents.Listener {
 
     private final MainFrame host;
     private final Settings settings;
@@ -35,10 +35,16 @@ final class ServerTab implements ConnectionListener, ServerTreePanel.Actions {
 
     private final TeamspeakConnection conn;
     private final GroupIcons groupIcons;
+    private final ServerTabConnectionEvents events;
+    private final ServerTabSelfState selfState;
+    private final ServerTabTreeActions treeActions;
     private final ServerTreePanel treePanel;
     private final ChatPanel chatPanel;
     private final InfoPanel infoPanel = new InfoPanel();
     private final JComponent component;
+    private JSplitPane leftColumn;
+    private int normalDividerSize;
+    private int savedDividerLocation = -1;
 
     /** Label shown in the tab bar: the server name once known, the address before that. */
     private String title = "New connection";
@@ -48,43 +54,61 @@ final class ServerTab implements ConnectionListener, ServerTreePanel.Actions {
     /** Identity used for the current connection, so it can be saved into a bookmark. */
     private String identityId = "";
 
-    private boolean micMuted;
-    private boolean micLocalMuted;
-    private boolean deafened;
-    private boolean away;
-    /** Away message currently published, empty when away carries no message. */
-    private String awayMessage = "";
-    private boolean commander;
-
-    private Object currentSelection;
-
     ServerTab(MainFrame host, Settings settings, IdentityStore identities, AudioBackend audio,
               SoundNotifier sounds) {
         this.host = host;
         this.settings = settings;
         this.identities = identities;
-        this.conn = new TeamspeakConnection(settings, audio, this, sounds);
+
+        // ServerTabConnectionEvents must exist before the connection (which needs a
+        // listener up front), and TeamspeakConnection must exist before the tree/chat
+        // panels and the other tab helpers that read from it — so wiring finishes with
+        // an explicit attach() once everything is built. Nothing fires callbacks before then.
+        this.events = new ServerTabConnectionEvents(host, this, this);
+        this.conn = new TeamspeakConnection(settings, audio, events, sounds);
         this.groupIcons = new GroupIcons(conn.getIcons());
-        this.treePanel = new ServerTreePanel(conn.getModel(), groupIcons, this);
+        this.selfState = new ServerTabSelfState(conn);
         this.chatPanel = new ChatPanel();
+        this.treeActions = new ServerTabTreeActions(host, this, conn, chatPanel, infoPanel, groupIcons);
+        this.treePanel = new ServerTreePanel(conn.getModel(), groupIcons, treeActions);
+        treeActions.attach(treePanel);
+        events.attach(conn, treePanel, chatPanel, selfState, treeActions);
 
         chatPanel.setSendHandler(this::onSendChat);
         chatPanel.setLinkHandler(new ChatPanel.LinkHandler() {
             @Override
             public void onClientLink(TsLink.Ref ref, Component source, int x, int y) {
-                ServerTab.this.onClientLink(ref, source, x, y);
+                treeActions.handleClientLink(ref, source, x, y);
             }
 
             @Override
             public void onChannelLink(TsLink.Ref ref, Component source, int x, int y) {
-                ServerTab.this.onChannelLink(ref, source, x, y);
+                treeActions.handleChannelLink(ref, source, x, y);
             }
         });
         chatPanel.setInputEnabled(false);
 
-        JSplitPane leftColumn = new JSplitPane(JSplitPane.VERTICAL_SPLIT, treePanel, infoPanel);
+        infoPanel.setDescriptionHandler(new InfoPanel.DescriptionHandler() {
+            @Override
+            public void showInfoTab(String html, Runnable onClose) {
+                chatPanel.openDescriptionTab("info", Icons.channelClientPair(), "", html, onClose);
+            }
+
+            @Override
+            public void closeInfoTab() {
+                chatPanel.closeNoteTab("info");
+            }
+
+            @Override
+            public void setPanelHidden(boolean hidden) {
+                ServerTab.this.setInfoPanelHidden(hidden);
+            }
+        });
+
+        leftColumn = new JSplitPane(JSplitPane.VERTICAL_SPLIT, treePanel, infoPanel);
         leftColumn.setResizeWeight(0.68);
         leftColumn.setContinuousLayout(true);
+        normalDividerSize = leftColumn.getDividerSize();
 
         JSplitPane split = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, leftColumn, chatPanel);
         split.setResizeWeight(0.55);
@@ -137,40 +161,32 @@ final class ServerTab implements ConnectionListener, ServerTreePanel.Actions {
     }
 
     boolean isMicMuted() {
-        return micMuted;
+        return selfState.isMicMuted();
     }
 
     boolean isMicLocalMuted() {
-        return micLocalMuted;
+        return selfState.isMicLocalMuted();
     }
 
     boolean isDeafened() {
-        return deafened;
+        return selfState.isDeafened();
     }
 
     boolean isAway() {
-        return away;
+        return selfState.isAway();
     }
 
     String awayMessage() {
-        return awayMessage;
+        return selfState.awayMessage();
     }
 
     boolean isCommander() {
-        return commander;
+        return selfState.isCommander();
     }
 
     /** What the local client looks like on this server, for the tray icon. */
     SelfState selfState() {
-        if (!conn.isConnected()) return SelfState.DISCONNECTED;
+        return selfState.compute();
-        if (deafened) return SelfState.DEAFENED;
-        if (micMuted) return SelfState.MIC_MUTED;
-        if (micLocalMuted) return SelfState.MIC_LOCAL_MUTED;
-        if (away) return SelfState.AWAY;
-        ClientEntry self = conn.getModel().getClient(conn.getSelfClientId());
-        boolean talking = self != null && self.talking;
-        if (commander) return talking ? SelfState.COMMANDER_TALKING : SelfState.COMMANDER;
-        return talking ? SelfState.TALKING : SelfState.IDLE;
     }
 
     /** Path of the channel we are in, or empty when not connected. */
@@ -194,8 +210,7 @@ final class ServerTab implements ConnectionListener, ServerTreePanel.Actions {
         title = address + ":" + port;
         chatPanel.appendSystem("Connecting to " + address + ":" + port
                 + (channel == null || channel.isBlank() ? "" : " (channel \"" + channel + "\")") + " …");
-        onStatus("Loading identity…");
+        events.onStatus("Loading identity…");
-        host.tabUpdated(this);
 
         // Resolving may have to generate a first identity, so keep it off the EDT.
         new Thread(() -> {
@@ -204,7 +219,7 @@ final class ServerTab implements ConnectionListener, ServerTreePanel.Actions {
                 entry = identities.resolve(settings, identityId);
             } catch (Exception e) {
                 connecting = false;
-                onError("Could not load identity: " + e.getMessage());
+                events.onError("Could not load identity: " + e.getMessage());
                 return;
             }
             SwingUtilities.invokeLater(() -> {
@@ -229,26 +244,36 @@ final class ServerTab implements ConnectionListener, ServerTreePanel.Actions {
         if (conn.isConnected()) conn.disconnectBlocking("Leaving");
     }
 
+    // ---- ServerTabConnectionEvents.Listener ----
+
+    @Override
+    public void setStatus(String status) {
+        this.status = status;
+    }
+
+    @Override
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    @Override
+    public void setConnecting(boolean connecting) {
+        this.connecting = connecting;
+    }
+
     // ---- self state ----
 
     void setMicMuted(boolean muted) {
-        micMuted = muted;
+        selfState.setMicMuted(muted);
-        conn.setMicMuted(muted);
-        chatPanel.appendSystem(muted ? "Microphone muted." : "Microphone active.");
     }
 
     /** TS3's "Local Mic Mute": silences capture without publishing a status change. */
     void setMicLocalMuted(boolean muted) {
-        micLocalMuted = muted;
+        selfState.setMicLocalMuted(muted);
-        conn.setMicLocalMuted(muted);
-        chatPanel.appendSystem(muted ? "Microphone locally muted." : "Microphone locally unmuted.");
     }
 
     void setDeafened(boolean deaf) {
-        deafened = deaf;
+        selfState.setDeafened(deaf);
-        conn.setDeafened(deaf);
-        if (deaf) micMuted = true;
-        chatPanel.appendSystem(deaf ? "Speakers muted (deafened)." : "Speakers active.");
     }
 
     /** Hands the capture device to (or takes it from) this connection. */
@@ -261,16 +286,11 @@ final class ServerTab implements ConnectionListener, ServerTreePanel.Actions {
      *                message outlives coming back, so toggling away again restores it
      */
     void setAway(boolean away, String message) {
-        this.away = away;
+        selfState.setAway(away, message);
-        if (message != null) this.awayMessage = message;
-        conn.setAway(away, awayMessage);
-        chatPanel.appendSystem(!away ? "No longer away."
-                : awayMessage.isEmpty() ? "Away." : "Away: " + awayMessage);
     }
 
     void setCommander(boolean commander) {
-        this.commander = commander;
+        selfState.setCommander(commander);
-        conn.setChannelCommander(commander);
     }
 
     void setNickname(String nickname) {
@@ -302,33 +322,6 @@ final class ServerTab implements ConnectionListener, ServerTreePanel.Actions {
         }
     }
 
-    /** A client link in the chat log was clicked: show the same menu as the tree does. */
-    private void onClientLink(TsLink.Ref ref, Component source, int x, int y) {
-        ClientEntry client = conn.getModel().getClient(ref.id);
-        // The id is only valid for the session the link was made in; fall back to
-        // the unique id (and finally the nickname) so older links still resolve.
-        if (client == null || (!ref.uniqueId.isEmpty() && !ref.uniqueId.equals(client.uniqueId))) {
-            ClientEntry byUid = ref.uniqueId.isEmpty() ? null
-                    : conn.getModel().findClientByUniqueId(ref.uniqueId);
-            if (byUid == null && !ref.name.isEmpty()) byUid = conn.getModel().findClientByName(ref.name);
-            if (byUid != null) client = byUid;
-        }
-        if (client == null) {
-            chatPanel.appendSystem("That client is no longer on the server.");
-            return;
-        }
-        ClientMenu.build(client, client.id == conn.getSelfClientId(), this).show(source, x, y);
-    }
-
-    private void onChannelLink(TsLink.Ref ref, Component source, int x, int y) {
-        ChannelNode channel = conn.getModel().getChannel(ref.id);
-        if (channel == null) {
-            chatPanel.appendSystem("That channel no longer exists.");
-            return;
-        }
-        ChannelMenu.build(channel, this).show(source, x, y);
-    }
-
     private String peerName(int clientId) {
         ClientEntry c = conn.getModel().getClient(clientId);
         return c != null ? c.nickname : "Client " + clientId;
@@ -361,233 +354,24 @@ final class ServerTab implements ConnectionListener, ServerTreePanel.Actions {
         return self == null ? null : conn.getModel().getChannel(self.channelId);
     }
 
-    // ---- ServerTreePanel.Actions ----
+    /** Opens the file repository browser for a channel, as the "Browse Files" hotkey/menu action does. */
-
+    void browseFiles(ChannelNode channel) {
-    @Override
+        treeActions.browseFiles(channel);
-    public void joinChannel(int channelId) {
-        if (conn.isConnected()) conn.joinChannel(channelId, null);
     }
 
-    @Override
+    /** Collapses the info panel to nothing while its content lives in the chat tab, or restores it. */
-    public void moveClientToChannel(ClientEntry client, ChannelNode target) {
+    private void setInfoPanelHidden(boolean hidden) {
-        if (!conn.isConnected()) return;
+        if (hidden == !infoPanel.isVisible()) return;
-        if (client.id == conn.getSelfClientId()) {
+        if (hidden) {
-            conn.joinChannel(target.id, null);
+            savedDividerLocation = leftColumn.getDividerLocation();
+            infoPanel.setVisible(false);
+            leftColumn.setDividerSize(0);
+            leftColumn.setDividerLocation(1.0);
         } else {
-            conn.moveClient(client.id, target.id, null);
+            infoPanel.setVisible(true);
+            leftColumn.setDividerSize(normalDividerSize);
+            if (savedDividerLocation >= 0) leftColumn.setDividerLocation(savedDividerLocation);
         }
-    }
+        leftColumn.revalidate();
-
-    @Override
-    public void moveChannel(ChannelNode channel, int newParentId, int orderPredecessorId) {
-        if (conn.isConnected()) conn.moveChannel(channel.id, newParentId, orderPredecessorId);
-    }
-
-    @Override
-    public void openPrivateChat(ClientEntry client) {
-        chatPanel.openPrivateChat(client.id, client.nickname);
-    }
-
-    @Override
-    public void pokeClient(ClientEntry client) {
-        String msg = JOptionPane.showInputDialog(host, "Poke message for " + client.nickname + ":", "Poke!");
-        if (msg != null) conn.poke(client.id, msg);
-    }
-
-    @Override
-    public void kickClientFromChannel(ClientEntry client) {
-        String reason = kickReason("Kick Client from Channel", client);
-        if (reason != null) conn.kickFromChannel(client.id, reason);
-    }
-
-    @Override
-    public void kickClientFromServer(ClientEntry client) {
-        String reason = kickReason("Kick Client from Server", client);
-        if (reason != null) conn.kickFromServer(client.id, reason);
-    }
-
-    private String kickReason(String title, ClientEntry client) {
-        if (!conn.isConnected()) return null;
-        return ReasonDialog.prompt(host, title, "Reason for kicking " + client.nickname + ":",
-                ReasonDialog.KICK_REASON_LIMIT);
-    }
-
-    @Override
-    public void banClient(ClientEntry client) {
-        if (!conn.isConnected()) return;
-        BanDialog dialog = new BanDialog(host, client.nickname);
-        dialog.setVisible(true);
-        if (dialog.isConfirmed()) conn.banClient(client.id, dialog.getSeconds(), dialog.getReason());
-    }
-
-    @Override
-    public void toggleClientMute(ClientEntry client) {
-        if (conn.getPlayback() == null) return;
-        boolean now = !conn.getPlayback().isClientMuted(client.id);
-        conn.getPlayback().setClientMuted(client.id, now);
-        chatPanel.appendSystem((now ? "Muted " : "Unmuted ") + client.nickname + ".");
-    }
-
-    @Override
-    public void showConnectionInfo(ClientEntry client) {
-        if (!conn.isConnected()) return;
-        new ConnectionInfoDialog(host, conn, client.id, client.nickname).setVisible(true);
-    }
-
-    @Override
-    public void moveClientToOwnChannel(ClientEntry client) {
-        if (!conn.isConnected() || client.id == conn.getSelfClientId()) return;
-        ClientEntry self = conn.getModel().getClient(conn.getSelfClientId());
-        if (self != null) conn.moveClient(client.id, self.channelId, null);
-    }
-
-    @Override
-    public void setChannelSubscribed(ChannelNode channel, boolean family, boolean subscribed) {
-        if (conn.isConnected()) conn.setChannelsSubscribed(channel.familyIds(family), subscribed);
-    }
-
-    @Override
-    public void browseFiles(ChannelNode channel) {
-        if (!conn.canTransferFiles()) return;
-        new FileBrowserDialog(host, conn, channel).setVisible(true);
-    }
-
-    @Override
-    public boolean isClientLocallyMuted(int clientId) {
-        return conn.getPlayback() != null && conn.getPlayback().isClientMuted(clientId);
-    }
-
-    @Override
-    public void onSelectionChanged(Object userObject) {
-        currentSelection = userObject;
-        renderInfo();
-        if (!conn.isConnected()) return;
-        if (userObject instanceof ChannelNode) {
-            ChannelNode ch = (ChannelNode) userObject;
-            if (!ch.descriptionLoaded) conn.requestChannelInfo(ch.id);
-        } else if (userObject instanceof ClientEntry) {
-            conn.requestClientInfo(((ClientEntry) userObject).id);
-        }
-    }
-
-    private void renderInfo() {
-        Object sel = currentSelection;
-        if (sel instanceof ChannelNode) {
-            infoPanel.showChannel((ChannelNode) sel);
-        } else if (sel instanceof ClientEntry) {
-            infoPanel.showClient((ClientEntry) sel, conn.getModel(), conn.getIcons());
-        } else {
-            infoPanel.clear();
-        }
-    }
-
-    // ---- ConnectionListener (marshal to EDT) ----
-
-    @Override
-    public void onStatus(String text) {
-        SwingUtilities.invokeLater(() -> {
-            status = text;
-            host.tabUpdated(this);
-        });
-    }
-
-    @Override
-    public void onConnected() {
-        SwingUtilities.invokeLater(() -> {
-            connecting = false;
-            treePanel.setSelfClientId(conn.getSelfClientId());
-            micMuted = false;
-            micLocalMuted = false;
-            deafened = false;
-            away = false;
-            awayMessage = "";
-            commander = false;
-            chatPanel.setInputEnabled(true);
-            chatPanel.appendSystem("Connected.");
-            host.tabConnected(this);
-        });
-    }
-
-    @Override
-    public void onDisconnected(String reason) {
-        SwingUtilities.invokeLater(() -> {
-            connecting = false;
-            conn.getModel().clear();
-            treePanel.showDisconnected();
-            currentSelection = null;
-            infoPanel.clear();
-            chatPanel.setInputEnabled(false);
-            chatPanel.closePrivateChats();
-            chatPanel.appendSystem("Disconnected" + (reason == null || reason.isEmpty() ? "." : ": " + reason));
-            host.tabDisconnected(this);
-        });
-    }
-
-    @Override
-    public void onModelChanged() {
-        SwingUtilities.invokeLater(() -> {
-            treePanel.rebuild();
-            renderInfo();
-            String name = conn.getModel().getServerName();
-            if (conn.isConnected() && name != null && !name.isBlank() && !name.equals(title)) {
-                title = name;
-                host.tabUpdated(this);
-            }
-        });
-    }
-
-    @Override
-    public void onInfoUpdated() {
-        SwingUtilities.invokeLater(this::renderInfo);
-    }
-
-    @Override
-    public void onIconsUpdated() {
-        SwingUtilities.invokeLater(() -> {
-            treePanel.refreshRowSizes();
-            renderInfo();
-        });
-    }
-
-    @Override
-    public void onChat(ChatScope scope, int fromClientId, String fromName, String message) {
-        switch (scope) {
-            case PRIVATE:
-                chatPanel.appendPrivateMessage(fromClientId, fromName, fromClientId, fromName, message);
-                break;
-            case SERVER:
-                chatPanel.appendServerMessage(fromClientId, fromName, message);
-                break;
-            default:
-                chatPanel.appendChannelMessage(fromClientId, fromName, message);
-                break;
-        }
-    }
-
-    @Override
-    public void onTalkStateChanged(int clientId, boolean talking) {
-        SwingUtilities.invokeLater(() -> {
-            treePanel.refreshVisual();
-            if (clientId == conn.getSelfClientId()) host.selfStateChanged(this);
-        });
-    }
-
-    @Override
-    public void onError(String message) {
-        SwingUtilities.invokeLater(() -> {
-            chatPanel.appendSystem("Error: " + message);
-            status = message;
-            host.tabUpdated(this);
-        });
-    }
-
-    @Override
-    public void onPoke(String fromName, String message) {
-        SwingUtilities.invokeLater(() -> {
-            chatPanel.appendSystem("You were poked by " + fromName + ": " + message);
-            host.selectTab(this);
-            JOptionPane.showMessageDialog(host, fromName + " poked you:\n\n" + message,
-                    "Poke", JOptionPane.INFORMATION_MESSAGE);
-        });
     }
 }

ts3-client/swing/src/main/java/com/ts3client/ui/ServerTabConnectionEvents.java

@@ -0,0 +1,161 @@
+package com.ts3client.ui;
+
+import com.ts3client.net.ConnectionListener;
+import com.ts3client.net.TeamspeakConnection;
+
+import javax.swing.JOptionPane;
+import javax.swing.SwingUtilities;
+
+/**
+ * Marshals {@link ConnectionListener} callbacks onto the EDT and fans them out to
+ * this tab's views (tree, chat, info panel) and to {@link MainFrame}.
+ *
+ * <p>Constructed before the {@link TeamspeakConnection} it listens to exists — the
+ * connection's constructor needs a listener up front — so {@link #attach} wires the
+ * rest of the tab in once everything else has been built.
+ */
+final class ServerTabConnectionEvents implements ConnectionListener {
+
+    /** The handful of {@link ServerTab} fields this class updates but can't reach directly. */
+    interface Listener {
+        void setStatus(String status);
+
+        void setTitle(String title);
+
+        void setConnecting(boolean connecting);
+    }
+
+    private final MainFrame host;
+    private final ServerTab tab;
+    private final Listener listener;
+
+    private TeamspeakConnection conn;
+    private ServerTreePanel treePanel;
+    private ChatPanel chatPanel;
+    private ServerTabSelfState selfState;
+    private ServerTabTreeActions treeActions;
+
+    ServerTabConnectionEvents(MainFrame host, ServerTab tab, Listener listener) {
+        this.host = host;
+        this.tab = tab;
+        this.listener = listener;
+    }
+
+    void attach(TeamspeakConnection conn, ServerTreePanel treePanel, ChatPanel chatPanel,
+                ServerTabSelfState selfState, ServerTabTreeActions treeActions) {
+        this.conn = conn;
+        this.treePanel = treePanel;
+        this.chatPanel = chatPanel;
+        this.selfState = selfState;
+        this.treeActions = treeActions;
+    }
+
+    @Override
+    public void onStatus(String text) {
+        SwingUtilities.invokeLater(() -> {
+            listener.setStatus(text);
+            host.tabUpdated(tab);
+        });
+    }
+
+    @Override
+    public void onConnected() {
+        SwingUtilities.invokeLater(() -> {
+            listener.setConnecting(false);
+            treePanel.setSelfClientId(conn.getSelfClientId());
+            selfState.resetOnConnect();
+            chatPanel.setInputEnabled(true);
+            chatPanel.appendSystem("Connected.");
+            host.tabConnected(tab);
+        });
+    }
+
+    @Override
+    public void onDisconnected(String reason) {
+        SwingUtilities.invokeLater(() -> {
+            listener.setConnecting(false);
+            conn.getModel().clear();
+            treePanel.showDisconnected();
+            treeActions.clearSelection();
+            chatPanel.setInputEnabled(false);
+            chatPanel.closePrivateChats();
+            chatPanel.closeNoteTabs();
+            chatPanel.appendSystem("Disconnected" + (reason == null || reason.isEmpty() ? "." : ": " + reason));
+            host.tabDisconnected(tab);
+        });
+    }
+
+    @Override
+    public void onModelChanged() {
+        SwingUtilities.invokeLater(() -> {
+            treePanel.rebuild();
+            treeActions.renderInfo();
+            treeActions.refreshGroupsDialog();
+            String name = conn.getModel().getServerName();
+            if (conn.isConnected() && name != null && !name.isBlank() && !name.equals(tab.title())) {
+                listener.setTitle(name);
+                host.tabUpdated(tab);
+            }
+        });
+    }
+
+    @Override
+    public void onInfoUpdated() {
+        SwingUtilities.invokeLater(treeActions::renderInfo);
+    }
+
+    @Override
+    public void onIconsUpdated() {
+        SwingUtilities.invokeLater(() -> {
+            treePanel.refreshRowSizes();
+            treeActions.renderInfo();
+        });
+    }
+
+    @Override
+    public void onChat(ChatScope scope, int fromClientId, String fromName, String message) {
+        switch (scope) {
+            case PRIVATE:
+                chatPanel.appendPrivateMessage(fromClientId, fromName, fromClientId, fromName, message);
+                break;
+            case SERVER:
+                chatPanel.appendServerMessage(fromClientId, fromName, message);
+                break;
+            default:
+                chatPanel.appendChannelMessage(fromClientId, fromName, message);
+                break;
+        }
+    }
+
+    @Override
+    public void onTalkStateChanged(int clientId, boolean talking) {
+        SwingUtilities.invokeLater(() -> {
+            treePanel.refreshVisual();
+            if (clientId == conn.getSelfClientId()) host.selfStateChanged(tab);
+        });
+    }
+
+    @Override
+    public void onError(String message) {
+        SwingUtilities.invokeLater(() -> {
+            chatPanel.appendSystem("Error: " + message);
+            listener.setStatus(message);
+            host.tabUpdated(tab);
+        });
+    }
+
+    @Override
+    public void onServerLog(String message) {
+        SwingUtilities.invokeLater(() -> chatPanel.appendServerLog(message));
+    }
+
+    @Override
+    public void onPoke(String fromName, String message) {
+        SwingUtilities.invokeLater(() -> {
+            chatPanel.appendSystem("You were poked by " + fromName + ": " + message);
+            host.selectTab(tab);
+            JOptionPane.showMessageDialog(host, fromName + " poked you:\n\n" + message,
+                    "Poke", JOptionPane.INFORMATION_MESSAGE);
+        });
+    }
+}

ts3-client/swing/src/main/java/com/ts3client/ui/ServerTabPane.java

@@ -34,11 +34,14 @@ final class ServerTabPane extends JPanel {
     private final Listener listener;
     private final JTabbedPane tabbed = new JTabbedPane();
     private final List<ServerTab> tabs = new ArrayList<>();
+    private final TabDragReorder dragReorder = new TabDragReorder(tabbed, this::moveTab);
 
     /** True while the tab strip is in use, i.e. more than one connection is open. */
     private boolean tabbedMode;
     /** Suppresses selection callbacks while we rearrange the pane ourselves. */
     private boolean updating;
+    /** Remembered so a drag-reorder can rebuild the tab labels without the caller's help. */
+    private ServerTab lastMicTab;
 
     ServerTabPane(Listener listener) {
         super(new BorderLayout());
@@ -51,6 +54,24 @@ final class ServerTabPane extends JPanel {
             if (i >= 0 && i < tabs.size()) listener.selectTab(tabs.get(i));
         });
         tabbed.addMouseWheelListener(this::onWheel);
+        dragReorder.attach(tabbed);
+    }
+
+    /** Drags a tab from one position to another, keeping the current selection on screen. */
+    private void moveTab(int from, int to) {
+        if (from < 0 || to < 0 || from >= tabs.size() || to >= tabs.size() || from == to) return;
+        ServerTab selected = tabbed.getSelectedIndex() >= 0 && tabbed.getSelectedIndex() < tabs.size()
+                ? tabs.get(tabbed.getSelectedIndex()) : null;
+        tabs.add(to, tabs.remove(from));
+        updating = true;
+        try {
+            tabbed.removeAll();
+            for (ServerTab tab : tabs) tabbed.addTab(tab.title(), tab.component());
+            if (selected != null) tabbed.setSelectedIndex(tabs.indexOf(selected));
+        } finally {
+            updating = false;
+        }
+        refresh(lastMicTab);
     }
 
     /**
@@ -93,6 +114,7 @@ final class ServerTabPane extends JPanel {
 
     /** Refreshes the tab labels; {@code micTab} is marked as owning the microphone. */
     void refresh(ServerTab micTab) {
+        lastMicTab = micTab;
         if (!tabbedMode) return;
         for (int i = 0; i < tabs.size(); i++) {
             ServerTab tab = tabs.get(i);
@@ -133,7 +155,7 @@ final class ServerTabPane extends JPanel {
         cell.setBorder(BorderFactory.createEmptyBorder(1, 0, 1, 0));
 
         JLabel label = new JLabel(tab.title(), hasMic ? Icons.micActiveSmall() : null, JLabel.LEADING);
-        label.setFont(Theme.UI_FONT);
+        label.setFont(Theme.uiFont());
         label.setToolTipText(hasMic ? "Speaking on this server" : tab.status());
         // A label with a tooltip swallows mouse events, so select the tab explicitly.
         label.addMouseListener(new MouseAdapter() {
@@ -143,14 +165,16 @@ final class ServerTabPane extends JPanel {
             }
         });
         cell.add(label);
+        dragReorder.attach(cell);
+        dragReorder.attach(label);
 
         JButton close = new JButton("✕");
-        close.setFont(Theme.UI_FONT);
+        close.setFont(Theme.uiFont());
         close.setFocusable(false);
         close.setBorder(BorderFactory.createEmptyBorder());
         close.setContentAreaFilled(false);
         close.setMargin(new Insets(0, 0, 0, 0));
-        close.setForeground(Theme.CHAT_SYSTEM);
+        close.setForeground(Theme.chatSystem());
         close.setPreferredSize(new Dimension(14, 14));
         close.setToolTipText("Close this connection");
         close.addActionListener(e -> listener.closeTab(tab));

ts3-client/swing/src/main/java/com/ts3client/ui/ServerTabSelfState.java

@@ -0,0 +1,106 @@
+package com.ts3client.ui;
+
+import com.ts3client.net.ClientEntry;
+import com.ts3client.net.TeamspeakConnection;
+
+/**
+ * Mic/speaker/away/commander flags for one connection, plus forwarding them into
+ * {@link TeamspeakConnection}. Split out of {@link ServerTab} because the flags
+ * are reset together in one place (on (re)connect) and read from several
+ * (tray icon, toolbar, menu checkmarks).
+ */
+final class ServerTabSelfState {
+
+    private final TeamspeakConnection conn;
+
+    private boolean micMuted;
+    private boolean micLocalMuted;
+    private boolean deafened;
+    private boolean away;
+    /** Away message currently published, empty when away carries no message. */
+    private String awayMessage = "";
+    private boolean commander;
+
+    ServerTabSelfState(TeamspeakConnection conn) {
+        this.conn = conn;
+    }
+
+    boolean isMicMuted() {
+        return micMuted;
+    }
+
+    boolean isMicLocalMuted() {
+        return micLocalMuted;
+    }
+
+    boolean isDeafened() {
+        return deafened;
+    }
+
+    boolean isAway() {
+        return away;
+    }
+
+    String awayMessage() {
+        return awayMessage;
+    }
+
+    boolean isCommander() {
+        return commander;
+    }
+
+    void setMicMuted(boolean muted) {
+        micMuted = muted;
+        conn.setMicMuted(muted);
+    }
+
+    /** TS3's "Local Mic Mute": silences capture without publishing a status change. */
+    void setMicLocalMuted(boolean muted) {
+        micLocalMuted = muted;
+        conn.setMicLocalMuted(muted);
+    }
+
+    void setDeafened(boolean deaf) {
+        deafened = deaf;
+        conn.setDeafened(deaf);
+        if (deaf) micMuted = true;
+    }
+
+    /**
+     * @param message the away message, or null to keep the one already set — the
+     *                message outlives coming back, so toggling away again restores it
+     */
+    void setAway(boolean away, String message) {
+        this.away = away;
+        if (message != null) this.awayMessage = message;
+        conn.setAway(away, awayMessage);
+    }
+
+    void setCommander(boolean commander) {
+        this.commander = commander;
+        conn.setChannelCommander(commander);
+    }
+
+    /** Clears all flags on a fresh connection; the server starts us out clean, so nothing to publish. */
+    void resetOnConnect() {
+        micMuted = false;
+        micLocalMuted = false;
+        deafened = false;
+        away = false;
+        awayMessage = "";
+        commander = false;
+    }
+
+    /** What the local client looks like on this server, for the tray icon. */
+    SelfState compute() {
+        if (!conn.isConnected()) return SelfState.DISCONNECTED;
+        if (deafened) return SelfState.DEAFENED;
+        if (micMuted) return SelfState.MIC_MUTED;
+        if (micLocalMuted) return SelfState.MIC_LOCAL_MUTED;
+        if (away) return SelfState.AWAY;
+        ClientEntry self = conn.getModel().getClient(conn.getSelfClientId());
+        boolean talking = self != null && self.talking;
+        if (commander) return talking ? SelfState.COMMANDER_TALKING : SelfState.COMMANDER;
+        return talking ? SelfState.TALKING : SelfState.IDLE;
+    }
+}

ts3-client/swing/src/main/java/com/ts3client/ui/ServerTabTreeActions.java

@@ -0,0 +1,296 @@
+package com.ts3client.ui;
+
+import com.ts3client.net.ChannelNode;
+import com.ts3client.net.ChannelSettings;
+import com.ts3client.net.ClientEntry;
+import com.ts3client.net.Group;
+import com.ts3client.net.TeamspeakConnection;
+import com.ts3client.text.TsLink;
+
+import javax.swing.JOptionPane;
+import javax.swing.SwingUtilities;
+import java.awt.Component;
+
+/**
+ * Context-menu and drag/drop actions for one server's tree, plus tracking which
+ * node is selected so the info panel stays in sync. Also handles client/channel
+ * links clicked in the chat log, which open the same menus as the tree does.
+ *
+ * <p>Constructed before the {@link ServerTreePanel} it drives exists — the tree's
+ * constructor needs an {@link ServerTreePanel.Actions} up front — so {@link #attach}
+ * wires the tree back in once it has been built.
+ */
+final class ServerTabTreeActions implements ServerTreePanel.Actions {
+
+    private final MainFrame host;
+    private final ServerTab tab;
+    private final TeamspeakConnection conn;
+    private final ChatPanel chatPanel;
+    private final InfoPanel infoPanel;
+    private final GroupIcons groupIcons;
+    private ServerTreePanel treePanel;
+
+    private Object currentSelection;
+    /** The one open {@link ServerGroupsDialog}, if any, refreshed whenever the model changes. */
+    private ServerGroupsDialog groupsDialog;
+
+    ServerTabTreeActions(MainFrame host, ServerTab tab, TeamspeakConnection conn,
+                          ChatPanel chatPanel, InfoPanel infoPanel, GroupIcons groupIcons) {
+        this.host = host;
+        this.tab = tab;
+        this.conn = conn;
+        this.chatPanel = chatPanel;
+        this.infoPanel = infoPanel;
+        this.groupIcons = groupIcons;
+    }
+
+    void attach(ServerTreePanel treePanel) {
+        this.treePanel = treePanel;
+    }
+
+    /** Called by {@link ServerTabConnectionEvents} whenever the model changes, to live-refresh an open dialog. */
+    void refreshGroupsDialog() {
+        if (groupsDialog != null) groupsDialog.refresh();
+    }
+
+    /** Refreshes the info panel for whatever is currently selected (or clears it). */
+    void renderInfo() {
+        Object sel = currentSelection;
+        if (sel instanceof ChannelNode) {
+            infoPanel.showChannel((ChannelNode) sel);
+        } else if (sel instanceof ClientEntry) {
+            infoPanel.showClient((ClientEntry) sel, conn.getModel(), conn.getIcons());
+        } else {
+            infoPanel.clear();
+        }
+    }
+
+    /** Drops the selection on disconnect, since the model it points into is gone. */
+    void clearSelection() {
+        currentSelection = null;
+        infoPanel.clear();
+    }
+
+    /** A client link in the chat log was clicked: show the same menu as the tree does. */
+    void handleClientLink(TsLink.Ref ref, Component source, int x, int y) {
+        ClientEntry client = conn.getModel().getClient(ref.id);
+        // The id is only valid for the session the link was made in; fall back to
+        // the unique id (and finally the nickname) so older links still resolve.
+        if (client == null || (!ref.uniqueId.isEmpty() && !ref.uniqueId.equals(client.uniqueId))) {
+            ClientEntry byUid = ref.uniqueId.isEmpty() ? null
+                    : conn.getModel().findClientByUniqueId(ref.uniqueId);
+            if (byUid == null && !ref.name.isEmpty()) byUid = conn.getModel().findClientByName(ref.name);
+            if (byUid != null) client = byUid;
+        }
+        if (client == null) {
+            chatPanel.appendSystem("That client is no longer on the server.");
+            return;
+        }
+        ClientMenu.build(client, client.id == conn.getSelfClientId(), false, conn.getModel(), groupIcons, this)
+                .show(source, x, y);
+    }
+
+    void handleChannelLink(TsLink.Ref ref, Component source, int x, int y) {
+        ChannelNode channel = conn.getModel().getChannel(ref.id);
+        if (channel == null) {
+            chatPanel.appendSystem("That channel no longer exists.");
+            return;
+        }
+        ChannelMenu.build(channel, this).show(source, x, y);
+    }
+
+    // ---- ServerTreePanel.Actions ----
+
+    @Override
+    public void joinChannel(int channelId) {
+        if (conn.isConnected()) conn.joinChannel(channelId, null);
+    }
+
+    @Override
+    public void moveClientToChannel(ClientEntry client, ChannelNode target) {
+        if (!conn.isConnected()) return;
+        if (client.id == conn.getSelfClientId()) {
+            conn.joinChannel(target.id, null);
+        } else {
+            conn.moveClient(client.id, target.id, null);
+        }
+    }
+
+    @Override
+    public void moveChannel(ChannelNode channel, int newParentId, int orderPredecessorId) {
+        if (conn.isConnected()) conn.moveChannel(channel.id, newParentId, orderPredecessorId);
+    }
+
+    @Override
+    public void openPrivateChat(ClientEntry client) {
+        chatPanel.openPrivateChat(client.id, client.nickname);
+    }
+
+    @Override
+    public void pokeClient(ClientEntry client) {
+        String msg = JOptionPane.showInputDialog(host, "Poke message for " + client.nickname + ":", "Poke!");
+        if (msg != null) conn.poke(client.id, msg);
+    }
+
+    @Override
+    public void kickClientFromChannel(ClientEntry client) {
+        String reason = kickReason("Kick Client from Channel", client);
+        if (reason != null) conn.kickFromChannel(client.id, reason);
+    }
+
+    @Override
+    public void kickClientFromServer(ClientEntry client) {
+        String reason = kickReason("Kick Client from Server", client);
+        if (reason != null) conn.kickFromServer(client.id, reason);
+    }
+
+    private String kickReason(String title, ClientEntry client) {
+        if (!conn.isConnected()) return null;
+        return ReasonDialog.prompt(host, title, "Reason for kicking " + client.nickname + ":",
+                ReasonDialog.KICK_REASON_LIMIT);
+    }
+
+    @Override
+    public void banClient(ClientEntry client) {
+        if (!conn.isConnected()) return;
+        BanDialog dialog = new BanDialog(host, client.nickname);
+        dialog.setVisible(true);
+        if (dialog.isConfirmed()) conn.banClient(client.id, dialog.getSeconds(), dialog.getReason());
+    }
+
+    @Override
+    public void toggleClientMute(ClientEntry client) {
+        if (conn.getPlayback() == null) return;
+        boolean now = !conn.getPlayback().isClientMuted(client.id);
+        conn.getPlayback().setClientMuted(client.id, now);
+    }
+
+    @Override
+    public void findClientInTree(ClientEntry client) {
+        host.selectTab(tab);
+        treePanel.selectClient(client.id);
+    }
+
+    @Override
+    public void showConnectionInfo(ClientEntry client) {
+        if (!conn.isConnected()) return;
+        new ConnectionInfoDialog(host, conn, client.id, client.nickname).setVisible(true);
+    }
+
+    @Override
+    public void moveClientToOwnChannel(ClientEntry client) {
+        if (!conn.isConnected() || client.id == conn.getSelfClientId()) return;
+        ClientEntry self = conn.getModel().getClient(conn.getSelfClientId());
+        if (self != null) conn.moveClient(client.id, self.channelId, null);
+    }
+
+    @Override
+    public void setClientServerGroup(ClientEntry client, Group group, boolean assign) {
+        if (conn.isConnected()) conn.setClientServerGroup(client.databaseId, group.id, assign);
+    }
+
+    @Override
+    public void setClientChannelGroup(ClientEntry client, Group group) {
+        if (conn.isConnected()) conn.setClientChannelGroup(client.databaseId, client.channelId, group.id);
+    }
+
+    @Override
+    public void showServerGroupsDialog(ClientEntry client) {
+        if (!conn.isConnected()) return;
+        groupsDialog = new ServerGroupsDialog(host, conn, groupIcons, client, this);
+        groupsDialog.setVisible(true);
+        groupsDialog = null;
+    }
+
+    /**
+     * Reads the description from the server before prompting, since the model only
+     * carries one for clients whose info has been looked at.
+     */
+    @Override
+    public void changeClientDescription(ClientEntry client) {
+        if (!conn.isConnected()) return;
+        conn.requestClientDescription(client.id, (description, error) -> SwingUtilities.invokeLater(() -> {
+            if (error != null) {
+                JOptionPane.showMessageDialog(host, "Could not read the description: " + error,
+                        "Error", JOptionPane.ERROR_MESSAGE);
+                return;
+            }
+            String edited = (String) JOptionPane.showInputDialog(host,
+                    "Description for " + client.nickname + ":", "Change Description",
+                    JOptionPane.PLAIN_MESSAGE, Icons.of("EDIT"), null, description);
+            if (edited == null || edited.equals(description)) return;
+            conn.setClientDescription(client.id, edited, failure -> SwingUtilities.invokeLater(() -> {
+                if (failure != null) {
+                    JOptionPane.showMessageDialog(host, "Could not change the description: " + failure,
+                            "Error", JOptionPane.ERROR_MESSAGE);
+                }
+            }));
+        }));
+    }
+
+    @Override
+    public void renameSelf(String nickname) {
+        host.changeNickname(nickname);
+    }
+
+    @Override
+    public void setChannelSubscribed(ChannelNode channel, boolean family, boolean subscribed) {
+        if (conn.isConnected()) conn.setChannelsSubscribed(channel.familyIds(family), subscribed);
+    }
+
+    @Override
+    public void editChannel(ChannelNode channel) {
+        if (!conn.isConnected()) return;
+        ChannelDialog.toEdit(host, conn, groupIcons, channel).setVisible(true);
+    }
+
+    @Override
+    public void createChannel(ChannelNode parent, ChannelSettings.Type type) {
+        if (!conn.isConnected()) return;
+        ChannelSettings defaults = new ChannelSettings();
+        defaults.type = type;
+        ChannelDialog.toCreate(host, conn, groupIcons,
+                parent == null ? "Create Channel" : "Create Sub-Channel of " + parent.name,
+                parent == null ? 0 : parent.id, defaults).setVisible(true);
+    }
+
+    @Override
+    public void createSpacer() {
+        if (!conn.isConnected()) return;
+        ChannelSettings defaults = new ChannelSettings();
+        // Spacers are cosmetic root channels, so they outlive everyone and, being channels,
+        // need a name no other channel has — which is what the tag's number is for.
+        defaults.name = Spacers.freeName(conn.getModel().childrenOf(0));
+        ChannelDialog.toCreate(host, conn, groupIcons, "Create Spacer", 0, defaults)
+                .setVisible(true);
+    }
+
+    @Override
+    public boolean isConnected() {
+        return conn.isConnected();
+    }
+
+    @Override
+    public void browseFiles(ChannelNode channel) {
+        if (!conn.canTransferFiles()) return;
+        new FileBrowserDialog(host, conn, channel).setVisible(true);
+    }
+
+    @Override
+    public boolean isClientLocallyMuted(int clientId) {
+        return conn.getPlayback() != null && conn.getPlayback().isClientMuted(clientId);
+    }
+
+    @Override
+    public void onSelectionChanged(Object userObject) {
+        currentSelection = userObject;
+        renderInfo();
+        if (!conn.isConnected()) return;
+        if (userObject instanceof ChannelNode) {
+            ChannelNode ch = (ChannelNode) userObject;
+            if (!ch.descriptionLoaded) conn.requestChannelInfo(ch.id);
+        } else if (userObject instanceof ClientEntry) {
+            conn.requestClientInfo(((ClientEntry) userObject).id);
+        }
+    }
+}

ts3-client/swing/src/main/java/com/ts3client/ui/ServerTreeCellRenderer.java

@@ -0,0 +1,92 @@
+package com.ts3client.ui;
+
+import com.ts3client.net.ChannelNode;
+import com.ts3client.net.ClientEntry;
+
+import javax.swing.ImageIcon;
+import javax.swing.JTree;
+import javax.swing.tree.DefaultMutableTreeNode;
+import javax.swing.tree.DefaultTreeCellRenderer;
+import java.awt.Component;
+import java.util.function.IntPredicate;
+
+/**
+ * Draws a {@link ServerTreePanel} row: the status icon and the label. The group
+ * icon strip is painted separately, right-aligned, by {@link DropIndicatorTree}.
+ */
+final class ServerTreeCellRenderer extends DefaultTreeCellRenderer {
+
+    /** Whether a client id is our own, which the panel learns on connecting. */
+    private final IntPredicate isSelf;
+
+    ServerTreeCellRenderer(IntPredicate isSelf) {
+        this.isSelf = isSelf;
+    }
+
+    @Override
+    public Component getTreeCellRendererComponent(JTree tree, Object value, boolean sel,
+                                                  boolean expanded, boolean leaf, int row,
+                                                  boolean hasFocus) {
+        super.getTreeCellRendererComponent(tree, value, sel, expanded, leaf, row, hasFocus);
+        setBackgroundNonSelectionColor(Theme.treeBg());
+        setBackgroundSelectionColor(Theme.treeSelection());
+        setBorderSelectionColor(Theme.treeSelection());
+
+        Object obj = ((DefaultMutableTreeNode) value).getUserObject();
+        if (obj instanceof ChannelNode) {
+            ChannelNode c = (ChannelNode) obj;
+            Spacers.Spacer spacer = Spacers.parse(c.name);
+            if (spacer != null) {
+                setText(Spacers.render(spacer, 40));
+                setIcon(null);
+                setForeground(Theme.idleClient());
+                setFont(Theme.uiFont());
+            } else {
+                setText(c.name);
+                setIcon(iconFor(c));
+                setForeground(Theme.channelText());
+                setFont(Theme.uiBold());
+            }
+        } else if (obj instanceof ClientEntry) {
+            ClientEntry cl = (ClientEntry) obj;
+            String label = cl.nickname;
+            if (cl.away && !cl.awayMessage.isEmpty()) label += "  [" + cl.awayMessage + "]";
+            setText(label);
+            setIcon(iconFor(cl));
+            // Talking shows in the client's icon, as it does in TeamSpeak. Marking the
+            // name as well would also re-measure the row mid-speech, which leaves the
+            // nickname clipped to an ellipsis for as long as it lasts. Our own name is
+            // bold throughout, so its width never changes either.
+            setForeground(Theme.treeText());
+            setFont(isSelf.test(cl.id) ? Theme.uiBold() : Theme.uiFont());
+        } else {
+            // root / server
+            setText(String.valueOf(obj));
+            setIcon(Icons.server());
+            setForeground(Theme.serverText());
+            setFont(Theme.uiBold());
+        }
+        return this;
+    }
+
+    private ImageIcon iconFor(ChannelNode c) {
+        if (c.hasPassword) return Icons.channelLocked(c.subscribed);
+        if (c.maxClients >= 0 && c.clients.size() >= c.maxClients) return Icons.channelFull(c.subscribed);
+        return Icons.channel(c.subscribed);
+    }
+
+    /** The client's state, in the order the official client gives them priority. */
+    private ImageIcon iconFor(ClientEntry cl) {
+        if (cl.isQuery()) return Icons.clientQuery();
+        if (!cl.outputHardware) return Icons.speakerDisabled();
+        if (cl.outputMuted) return Icons.speakerMuted();
+        if (!cl.inputHardware) return Icons.micDisabled();
+        if (cl.inputMuted) return Icons.micMuted();
+        if (cl.away) return Icons.clientAway();
+        if (cl.channelCommander) {
+            return cl.talking ? Icons.clientCommanderTalking() : Icons.clientCommander();
+        }
+        if (cl.talking) return Icons.clientTalking();
+        return Icons.clientIdle();
+    }
+}

ts3-client/swing/src/main/java/com/ts3client/ui/ServerTreeDragAndDrop.java

@@ -0,0 +1,235 @@
+package com.ts3client.ui;
+
+import com.ts3client.net.ChannelNode;
+import com.ts3client.net.ClientEntry;
+import com.ts3client.net.ServerModel;
+import com.ts3client.text.TsLink;
+
+import javax.swing.JComponent;
+import javax.swing.JTree;
+import javax.swing.TransferHandler;
+import javax.swing.tree.DefaultMutableTreeNode;
+import javax.swing.tree.TreePath;
+import java.awt.datatransfer.DataFlavor;
+import java.awt.datatransfer.Transferable;
+import java.awt.datatransfer.UnsupportedFlavorException;
+import java.util.function.Function;
+
+/**
+ * Drag-and-drop for the {@link ServerTreePanel} tree: dragging a client onto a
+ * channel moves it there, dragging a channel reorders/reparents it, and dropping
+ * either outside the tree yields its TS3 link BBCode, which the chat input accepts
+ * as plain text.
+ */
+final class ServerTreeDragAndDrop {
+
+    /** Carries the dragged node inside this JVM; drops elsewhere get the BBCode text. */
+    private static final DataFlavor NODE_FLAVOR = new DataFlavor(
+            DataFlavor.javaJVMLocalObjectMimeType + ";class=java.lang.Object",
+            "TeamSpeak tree node");
+
+    private final ServerModel model;
+    private final ServerTreePanel.Actions actions;
+    private final DropIndicatorTree tree;
+    /** Looks up the tree path currently showing a given channel/client, or {@code null}. */
+    private final Function<Object, TreePath> pathOf;
+
+    ServerTreeDragAndDrop(ServerModel model, ServerTreePanel.Actions actions, DropIndicatorTree tree,
+                           Function<Object, TreePath> pathOf) {
+        this.model = model;
+        this.actions = actions;
+        this.tree = tree;
+        this.pathOf = pathOf;
+    }
+
+    TransferHandler transferHandler() {
+        return new TreeTransferHandler();
+    }
+
+    private static DefaultMutableTreeNode nodeOf(TreePath path) {
+        return path == null ? null : (DefaultMutableTreeNode) path.getLastPathComponent();
+    }
+
+    /**
+     * The channel a dragged client would land in, or {@code null} if the drop makes
+     * no sense (outside a channel, or the channel the client is already in).
+     */
+    private ChannelNode resolveClientDrop(JTree.DropLocation loc, ClientEntry dragged) {
+        DefaultMutableTreeNode target = nodeOf(loc.getPath());
+        if (target == null) return null;
+        Object obj = target.getUserObject();
+        ChannelNode channel = null;
+        if (obj instanceof ChannelNode) {
+            channel = (ChannelNode) obj;
+        } else if (obj instanceof ClientEntry) {
+            channel = model.getChannel(((ClientEntry) obj).channelId);
+        }
+        if (channel == null || Spacers.isSpacer(channel.name)) return null;
+        if (channel.id == dragged.channelId) return null;
+        return channel;
+    }
+
+    /**
+     * The new parent and predecessor for a dragged channel as {@code {cpid, order}},
+     * or {@code null} if this drop is not a legal (or meaningful) move.
+     */
+    private int[] resolveChannelDrop(JTree.DropLocation loc, ChannelNode dragged) {
+        DefaultMutableTreeNode target = nodeOf(loc.getPath());
+        if (target == null) return null;
+
+        DefaultMutableTreeNode parentNode;
+        int insertIndex;
+        if (loc.getChildIndex() >= 0) {
+            parentNode = target;
+            insertIndex = loc.getChildIndex();
+        } else {
+            // Dropped onto a node: become its last subchannel.
+            parentNode = target.getUserObject() instanceof ClientEntry
+                    ? (DefaultMutableTreeNode) target.getParent() : target;
+            if (parentNode == null) return null;
+            insertIndex = parentNode.getChildCount();
+        }
+
+        int parentId = 0;
+        Object parentObj = parentNode.getUserObject();
+        if (parentObj instanceof ChannelNode) {
+            ChannelNode parent = (ChannelNode) parentObj;
+            if (Spacers.isSpacer(parent.name)) return null;
+            if (isSelfOrDescendant(parent, dragged)) return null; // would detach the subtree
+            parentId = parent.id;
+        } else if (parentNode.getParent() != null) {
+            return null;
+        }
+
+        int predecessorId = 0;
+        for (int i = 0; i < insertIndex && i < parentNode.getChildCount(); i++) {
+            Object o = ((DefaultMutableTreeNode) parentNode.getChildAt(i)).getUserObject();
+            if (o instanceof ChannelNode && ((ChannelNode) o).id != dragged.id) {
+                predecessorId = ((ChannelNode) o).id;
+            }
+        }
+        if (parentId == dragged.parentId && predecessorId == dragged.order) return null; // no-op
+        return new int[]{parentId, predecessorId};
+    }
+
+    /** Whether {@code candidate} is {@code ancestor} itself or sits below it. */
+    private boolean isSelfOrDescendant(ChannelNode candidate, ChannelNode ancestor) {
+        ChannelNode c = candidate;
+        for (int guard = 0; c != null && guard < 64; guard++) {
+            if (c.id == ancestor.id) return true;
+            c = model.getChannel(c.parentId);
+        }
+        return false;
+    }
+
+    private final class TreeTransferHandler extends TransferHandler {
+        @Override
+        public int getSourceActions(JComponent c) {
+            return COPY | MOVE;
+        }
+
+        @Override
+        protected Transferable createTransferable(JComponent c) {
+            TreePath path = tree.getSelectionPath();
+            if (path == null) return null;
+            Object obj = nodeOf(path).getUserObject();
+            if (obj instanceof ClientEntry) {
+                ClientEntry cl = (ClientEntry) obj;
+                return new NodeTransferable(cl, TsLink.clientBBCode(cl.id, cl.uniqueId, cl.nickname));
+            }
+            if (obj instanceof ChannelNode) {
+                ChannelNode ch = (ChannelNode) obj;
+                // Spacers have no meaningful link text, but can still be re-ordered.
+                return new NodeTransferable(ch, Spacers.isSpacer(ch.name)
+                        ? null : TsLink.channelBBCode(ch.id, ch.name));
+            }
+            return null;
+        }
+
+        @Override
+        public boolean canImport(TransferSupport support) {
+            if (!support.isDrop() || !support.isDataFlavorSupported(NODE_FLAVOR)) {
+                tree.highlightChannel(null);
+                return false;
+            }
+            if ((support.getSourceDropActions() & MOVE) == MOVE) support.setDropAction(MOVE);
+            Object resolved = resolve(support);
+            // A client always lands *inside* a channel, so mark that channel instead of
+            // drawing a line that would suggest a position among its clients.
+            tree.highlightChannel(resolved instanceof ChannelNode
+                    ? pathOf.apply(resolved) : null);
+            // The indicator spans the full width, past the row rectangles Swing
+            // repaints on its own when the drop location moves.
+            tree.repaint();
+            return resolved != null;
+        }
+
+        @Override
+        protected void exportDone(JComponent source, Transferable data, int action) {
+            tree.highlightChannel(null);
+            tree.repaint();
+        }
+
+        @Override
+        public boolean importData(TransferSupport support) {
+            if (!canImport(support)) return false;
+            Object dragged = draggedNode(support);
+            Object resolved = resolve(support);
+            tree.highlightChannel(null);
+            if (dragged instanceof ClientEntry) {
+                actions.moveClientToChannel((ClientEntry) dragged, (ChannelNode) resolved);
+            } else if (dragged instanceof ChannelNode) {
+                int[] place = (int[]) resolved;
+                actions.moveChannel((ChannelNode) dragged, place[0], place[1]);
+            }
+            return true;
+        }
+
+        /** The destination for this drop: a ChannelNode, an {@code {cpid, order}} pair, or null. */
+        private Object resolve(TransferSupport support) {
+            Object dragged = draggedNode(support);
+            if (!(support.getDropLocation() instanceof JTree.DropLocation)) return null;
+            JTree.DropLocation loc = (JTree.DropLocation) support.getDropLocation();
+            if (dragged instanceof ClientEntry) return resolveClientDrop(loc, (ClientEntry) dragged);
+            if (dragged instanceof ChannelNode) return resolveChannelDrop(loc, (ChannelNode) dragged);
+            return null;
+        }
+
+        private Object draggedNode(TransferSupport support) {
+            try {
+                return support.getTransferable().getTransferData(NODE_FLAVOR);
+            } catch (Exception e) {
+                return null;
+            }
+        }
+    }
+
+    /** Offers the dragged node locally and its TS3 link BBCode to other applications. */
+    private static final class NodeTransferable implements Transferable {
+        private final Object node;
+        private final String text;
+
+        NodeTransferable(Object node, String text) {
+            this.node = node;
+            this.text = text;
+        }
+
+        @Override
+        public DataFlavor[] getTransferDataFlavors() {
+            return text == null ? new DataFlavor[]{NODE_FLAVOR}
+                    : new DataFlavor[]{NODE_FLAVOR, DataFlavor.stringFlavor};
+        }
+
+        @Override
+        public boolean isDataFlavorSupported(DataFlavor flavor) {
+            return NODE_FLAVOR.equals(flavor) || (text != null && DataFlavor.stringFlavor.equals(flavor));
+        }
+
+        @Override
+        public Object getTransferData(DataFlavor flavor) throws UnsupportedFlavorException {
+            if (NODE_FLAVOR.equals(flavor)) return node;
+            if (text != null && DataFlavor.stringFlavor.equals(flavor)) return text;
+            throw new UnsupportedFlavorException(flavor);
+        }
+    }
+}

ts3-client/swing/src/main/java/com/ts3client/ui/ServerTreePanel.java

@@ -1,34 +1,20 @@
 package com.ts3client.ui;
 
 import com.ts3client.net.ChannelNode;
+import com.ts3client.net.ChannelSettings;
 import com.ts3client.net.ClientEntry;
+import com.ts3client.net.Group;
 import com.ts3client.net.ServerModel;
-import com.ts3client.text.TsLink;
 
 import javax.swing.DropMode;
-import javax.swing.Icon;
-import javax.swing.ImageIcon;
-import javax.swing.JComponent;
 import javax.swing.JScrollPane;
-import javax.swing.JTree;
 import javax.swing.JViewport;
 import javax.swing.SwingUtilities;
-import javax.swing.TransferHandler;
 import javax.swing.plaf.basic.BasicTreeUI;
 import javax.swing.tree.DefaultMutableTreeNode;
 import javax.swing.tree.DefaultTreeModel;
-import javax.swing.tree.DefaultTreeCellRenderer;
-import javax.swing.tree.TreeModel;
 import javax.swing.tree.TreePath;
-import java.awt.BasicStroke;
-import java.awt.Component;
-import java.awt.Graphics;
-import java.awt.Graphics2D;
 import java.awt.Rectangle;
-import java.awt.RenderingHints;
-import java.awt.datatransfer.DataFlavor;
-import java.awt.datatransfer.Transferable;
-import java.awt.datatransfer.UnsupportedFlavorException;
 import java.awt.event.MouseAdapter;
 import java.awt.event.MouseEvent;
 import java.util.List;
@@ -60,6 +46,23 @@ public final class ServerTreePanel extends JScrollPane {
         /** Moves a client into the channel we are currently in. */
         void moveClientToOwnChannel(ClientEntry client);
 
+        /** Opens the channel editor for a channel. */
+        void editChannel(ChannelNode channel);
+
+        /**
+         * Opens the channel creator.
+         *
+         * @param parent the channel the new one goes below, or {@code null} for a top-level one
+         * @param type   the channel type to start with
+         */
+        void createChannel(ChannelNode parent, ChannelSettings.Type type);
+
+        /** Opens the channel creator pre-filled as a spacer, which is always top-level. */
+        void createSpacer();
+
+        /** Whether the server is there to act on at all. */
+        boolean isConnected();
+
         /** Open the file repository browser for a channel. */
         void browseFiles(ChannelNode channel);
 
@@ -72,6 +75,9 @@ public final class ServerTreePanel extends JScrollPane {
 
         boolean isClientLocallyMuted(int clientId);
 
+        /** Selects and scrolls to a client in the tree, e.g. from a chat/log link. */
+        void findClientInTree(ClientEntry client);
+
         /** A channel or client node was selected (or {@code null} when cleared). */
         void onSelectionChanged(Object userObject);
 
@@ -85,19 +91,47 @@ public final class ServerTreePanel extends JScrollPane {
          *                           siblings, or 0 to place it first
          */
         void moveChannel(ChannelNode channel, int newParentId, int orderPredecessorId);
-    }
 
-    /** Carries the dragged node inside this JVM; drops elsewhere get the BBCode text. */
+        /** Assigns or removes a server group for a client. */
-    private static final DataFlavor NODE_FLAVOR = new DataFlavor(
+        void setClientServerGroup(ClientEntry client, Group group, boolean assign);
-            DataFlavor.javaJVMLocalObjectMimeType + ";class=java.lang.Object",
+
-            "TeamSpeak tree node");
+        /** Assigns a channel group for a client in its current channel. */
+        void setClientChannelGroup(ClientEntry client, Group group);
+
+        /** Opens the full server-groups list dialog for a client. */
+        void showServerGroupsDialog(ClientEntry client);
+
+        /** Edits a client's description — our own included. */
+        void changeClientDescription(ClientEntry client);
+
+        /** A new nickname for ourselves, typed into the tree row. */
+        void renameSelf(String nickname);
+    }
 
     private final DropIndicatorTree tree;
     private final DefaultMutableTreeNode root = new DefaultMutableTreeNode();
-    private final DefaultTreeModel treeModel = new DefaultTreeModel(root);
+    /**
+     * The nodes only mirror the connection's model, so an edited row is not written
+     * back into the tree: the new nickname goes to the server, and the row follows
+     * once it reports the rename.
+     */
+    private final DefaultTreeModel treeModel = new DefaultTreeModel(root) {
+        @Override
+        public void valueForPathChanged(TreePath path, Object newValue) {
+            String nickname = String.valueOf(newValue).trim();
+            Object edited = ((DefaultMutableTreeNode) path.getLastPathComponent()).getUserObject();
+            // The server answers a rename to the name already held with "nickname is
+            // already in use", so a field closed unchanged is simply left alone.
+            if (edited instanceof ClientEntry && nickname.equals(((ClientEntry) edited).nickname)) return;
+            if (!nickname.isEmpty()) actions.renameSelf(nickname);
+        }
+    };
+    /** True while {@link #rebuild()} clears and restores the selection, to swallow the transient null in between. */
+    private boolean rebuilding;
     private final ServerModel model;
     private final GroupIcons groupIcons;
     private final Actions actions;
+    private final NicknameCellEditor nicknameEditor;
     private int selfClientId = -1;
 
     public ServerTreePanel(ServerModel model, GroupIcons groupIcons, Actions actions) {
@@ -105,7 +139,7 @@ public final class ServerTreePanel extends JScrollPane {
         this.groupIcons = groupIcons;
         this.actions = actions;
         root.setUserObject("Not connected");
-        this.tree = new DropIndicatorTree(treeModel);
+        this.tree = new DropIndicatorTree(treeModel, model, groupIcons);
         tree.setRootVisible(true);
         // The server node is the only top-level row and always stays open, so it gets
         // no expand control. Nesting is tightened too: horizontal space in this view
@@ -117,22 +151,31 @@ public final class ServerTreePanel extends JScrollPane {
             ui.setRightChildIndent(10);
         }
         tree.setRowHeight(20);
-        tree.setBackground(Theme.TREE_BG);
+        tree.setBackground(Theme.treeBg());
-        tree.setFont(Theme.UI_FONT);
+        tree.setFont(Theme.uiFont());
-        tree.setCellRenderer(new Renderer());
+        ServerTreeCellRenderer renderer = new ServerTreeCellRenderer(id -> id == selfClientId);
+        tree.setCellRenderer(renderer);
+        nicknameEditor = NicknameCellEditor.create(tree, renderer, id -> id == selfClientId);
+        tree.setCellEditor(nicknameEditor);
+        tree.setEditable(true);
+        tree.setPathEditable(nicknameEditor::editsPath);
+        tree.setInvokesStopCellEditing(true);
         setViewportView(tree);
-        getViewport().setBackground(Theme.TREE_BG);
         // The icon strip is drawn against the viewport's right edge, so the blitted
         // pixels a scroll would reuse are stale; repaint the whole viewport instead.
         getViewport().setScrollMode(JViewport.SIMPLE_SCROLL_MODE);
+        // Scrolling slides the rows past a pointer that has not moved, so the outlined
+        // row has to be worked out again.
+        getViewport().addChangeListener(e -> tree.refreshHoverRow());
 
         // Within the tree a drag moves the client or channel; dropped elsewhere it
         // yields the TS3 link BBCode, which the chat input accepts as plain text.
         tree.setDragEnabled(true);
         tree.setDropMode(DropMode.ON_OR_INSERT);
-        tree.setTransferHandler(new TreeTransferHandler());
+        tree.setTransferHandler(new ServerTreeDragAndDrop(model, actions, tree, this::pathOf).transferHandler());
 
         tree.addTreeSelectionListener(e -> {
+            if (rebuilding) return;
             TreePath path = tree.getSelectionPath();
             Object obj = null;
             if (path != null) {
@@ -144,6 +187,7 @@ public final class ServerTreePanel extends JScrollPane {
         tree.addMouseListener(new MouseAdapter() {
             @Override
             public void mousePressed(MouseEvent e) {
+                selectRowUnder(e);
                 maybePopup(e);
             }
 
@@ -159,7 +203,11 @@ public final class ServerTreePanel extends JScrollPane {
                     if (obj instanceof ChannelNode && !Spacers.isSpacer(((ChannelNode) obj).name)) {
                         actions.joinChannel(((ChannelNode) obj).id);
                     } else if (obj instanceof ClientEntry) {
-                        actions.openPrivateChat((ClientEntry) obj);
+                        if (((ClientEntry) obj).id == selfClientId) {
+                            tree.startEditingAtPath(tree.pathAt(e.getY()));
+                        } else {
+                            actions.openPrivateChat((ClientEntry) obj);
+                        }
                     }
                 } else if (SwingUtilities.isMiddleMouseButton(e) && obj instanceof ClientEntry) {
                     actions.showConnectionInfo((ClientEntry) obj);
@@ -168,12 +216,37 @@ public final class ServerTreePanel extends JScrollPane {
         });
     }
 
+    /**
+     * Selects the row a press landed on. A row acts on its whole line, but Swing's own
+     * hit testing stops at the end of the label, so a press further right would leave
+     * the selection where it was.
+     */
+    private void selectRowUnder(MouseEvent e) {
+        if (!SwingUtilities.isLeftMouseButton(e) && !e.isPopupTrigger()) return;
+        TreePath path = tree.pathAt(e.getY());
+        if (path == null || path.equals(tree.getSelectionPath())) return;
+        Rectangle bounds = tree.getPathBounds(path);
+        // Left of the label is the expand handle, which Swing works the row without selecting it.
+        if (bounds != null && e.getX() < bounds.x) return;
+        tree.setSelectionPath(path);
+    }
+
     public void setSelfClientId(int id) {
         this.selfClientId = id;
     }
 
+    /** Selects and scrolls to the row showing {@code client}, if it is currently visible. */
+    public void selectClient(int clientId) {
+        ClientEntry client = model.getClient(clientId);
+        if (client == null) return;
+        TreePath path = pathOf(client);
+        if (path == null) return;
+        tree.setSelectionPath(path);
+        tree.scrollPathToVisible(path);
+    }
+
     private Object nodeAt(MouseEvent e) {
-        TreePath path = tree.getPathForLocation(e.getX(), e.getY());
+        TreePath path = tree.pathAt(e.getY());
         if (path == null) return null;
         DefaultMutableTreeNode n = (DefaultMutableTreeNode) path.getLastPathComponent();
         return n.getUserObject();
@@ -181,7 +254,7 @@ public final class ServerTreePanel extends JScrollPane {
 
     private void maybePopup(MouseEvent e) {
         if (!e.isPopupTrigger()) return;
-        TreePath path = tree.getPathForLocation(e.getX(), e.getY());
+        TreePath path = tree.pathAt(e.getY());
         if (path == null) return;
         tree.setSelectionPath(path);
         Object obj = ((DefaultMutableTreeNode) path.getLastPathComponent()).getUserObject();
@@ -189,11 +262,15 @@ public final class ServerTreePanel extends JScrollPane {
             showClientMenu((ClientEntry) obj, e);
         } else if (obj instanceof ChannelNode) {
             showChannelMenu((ChannelNode) obj, e);
+        } else if (path.getPathCount() == 1 && actions.isConnected()) {
+            // The root row is the server itself, whose user object is just its name.
+            ServerMenu.build(actions).show(tree, e.getX(), e.getY());
         }
     }
 
     private void showClientMenu(ClientEntry client, MouseEvent e) {
-        ClientMenu.build(client, client.id == selfClientId, actions).show(tree, e.getX(), e.getY());
+        ClientMenu.build(client, client.id == selfClientId, true, model, groupIcons, actions)
+                .show(tree, e.getX(), e.getY());
     }
 
     private void showChannelMenu(ChannelNode channel, MouseEvent e) {
@@ -201,10 +278,12 @@ public final class ServerTreePanel extends JScrollPane {
         ChannelMenu.build(channel, actions).show(tree, e.getX(), e.getY());
     }
 
-    // ---- drag and drop ----
+    @Override
-
+    public void updateUI() {
-    private static DefaultMutableTreeNode nodeOf(TreePath path) {
+        super.updateUI();
-        return path == null ? null : (DefaultMutableTreeNode) path.getLastPathComponent();
+        // The rows stop at the last channel, so the space below them belongs to the tree
+        // rather than to the window behind it.
+        if (getViewport() != null) getViewport().setBackground(Theme.treeBg());
     }
 
     /** The path of the tree node showing {@code target}, or {@code null}. */
@@ -218,342 +297,42 @@ public final class ServerTreePanel extends JScrollPane {
     }
 
     /**
-     * The channel a dragged client would land in, or {@code null} if the drop makes
+     * Rebuilds the tree from the model, preserving full expansion. Rebuilding
-     * no sense (outside a channel, or the channel the client is already in).
+     * replaces every tree node, which would otherwise drop the current
+     * selection on every update (a client talking, a group change, …); the
+     * previously selected channel/client is restored by identity once the new
+     * nodes are in place, so a selection sticks until the user changes it.
      */
-    private ChannelNode resolveClientDrop(JTree.DropLocation loc, ClientEntry dragged) {
-        DefaultMutableTreeNode target = nodeOf(loc.getPath());
-        if (target == null) return null;
-        Object obj = target.getUserObject();
-        ChannelNode channel = null;
-        if (obj instanceof ChannelNode) {
-            channel = (ChannelNode) obj;
-        } else if (obj instanceof ClientEntry) {
-            channel = model.getChannel(((ClientEntry) obj).channelId);
-        }
-        if (channel == null || Spacers.isSpacer(channel.name)) return null;
-        if (channel.id == dragged.channelId) return null;
-        return channel;
-    }
-
-    /**
-     * The new parent and predecessor for a dragged channel as {@code {cpid, order}},
-     * or {@code null} if this drop is not a legal (or meaningful) move.
-     */
-    private int[] resolveChannelDrop(JTree.DropLocation loc, ChannelNode dragged) {
-        DefaultMutableTreeNode target = nodeOf(loc.getPath());
-        if (target == null) return null;
-
-        DefaultMutableTreeNode parentNode;
-        int insertIndex;
-        if (loc.getChildIndex() >= 0) {
-            parentNode = target;
-            insertIndex = loc.getChildIndex();
-        } else {
-            // Dropped onto a node: become its last subchannel.
-            parentNode = target.getUserObject() instanceof ClientEntry
-                    ? (DefaultMutableTreeNode) target.getParent() : target;
-            if (parentNode == null) return null;
-            insertIndex = parentNode.getChildCount();
-        }
-
-        int parentId = 0;
-        Object parentObj = parentNode.getUserObject();
-        if (parentObj instanceof ChannelNode) {
-            ChannelNode parent = (ChannelNode) parentObj;
-            if (Spacers.isSpacer(parent.name)) return null;
-            if (isSelfOrDescendant(parent, dragged)) return null; // would detach the subtree
-            parentId = parent.id;
-        } else if (parentNode != root) {
-            return null;
-        }
-
-        int predecessorId = 0;
-        for (int i = 0; i < insertIndex && i < parentNode.getChildCount(); i++) {
-            Object o = ((DefaultMutableTreeNode) parentNode.getChildAt(i)).getUserObject();
-            if (o instanceof ChannelNode && ((ChannelNode) o).id != dragged.id) {
-                predecessorId = ((ChannelNode) o).id;
-            }
-        }
-        if (parentId == dragged.parentId && predecessorId == dragged.order) return null; // no-op
-        return new int[]{parentId, predecessorId};
-    }
-
-    /** Whether {@code candidate} is {@code ancestor} itself or sits below it. */
-    private boolean isSelfOrDescendant(ChannelNode candidate, ChannelNode ancestor) {
-        ChannelNode c = candidate;
-        for (int guard = 0; c != null && guard < 64; guard++) {
-            if (c.id == ancestor.id) return true;
-            c = model.getChannel(c.parentId);
-        }
-        return false;
-    }
-
-    private final class TreeTransferHandler extends TransferHandler {
-        @Override
-        public int getSourceActions(JComponent c) {
-            return COPY | MOVE;
-        }
-
-        @Override
-        protected Transferable createTransferable(JComponent c) {
-            TreePath path = tree.getSelectionPath();
-            if (path == null) return null;
-            Object obj = nodeOf(path).getUserObject();
-            if (obj instanceof ClientEntry) {
-                ClientEntry cl = (ClientEntry) obj;
-                return new NodeTransferable(cl, TsLink.clientBBCode(cl.id, cl.uniqueId, cl.nickname));
-            }
-            if (obj instanceof ChannelNode) {
-                ChannelNode ch = (ChannelNode) obj;
-                // Spacers have no meaningful link text, but can still be re-ordered.
-                return new NodeTransferable(ch, Spacers.isSpacer(ch.name)
-                        ? null : TsLink.channelBBCode(ch.id, ch.name));
-            }
-            return null;
-        }
-
-        @Override
-        public boolean canImport(TransferSupport support) {
-            if (!support.isDrop() || !support.isDataFlavorSupported(NODE_FLAVOR)) {
-                tree.highlightChannel(null);
-                return false;
-            }
-            if ((support.getSourceDropActions() & MOVE) == MOVE) support.setDropAction(MOVE);
-            Object resolved = resolve(support);
-            // A client always lands *inside* a channel, so mark that channel instead of
-            // drawing a line that would suggest a position among its clients.
-            tree.highlightChannel(resolved instanceof ChannelNode
-                    ? pathOf((ChannelNode) resolved) : null);
-            // The indicator spans the full width, past the row rectangles Swing
-            // repaints on its own when the drop location moves.
-            tree.repaint();
-            return resolved != null;
-        }
-
-        @Override
-        protected void exportDone(JComponent source, Transferable data, int action) {
-            tree.highlightChannel(null);
-            tree.repaint();
-        }
-
-        @Override
-        public boolean importData(TransferSupport support) {
-            if (!canImport(support)) return false;
-            Object dragged = draggedNode(support);
-            Object resolved = resolve(support);
-            tree.highlightChannel(null);
-            if (dragged instanceof ClientEntry) {
-                actions.moveClientToChannel((ClientEntry) dragged, (ChannelNode) resolved);
-            } else if (dragged instanceof ChannelNode) {
-                int[] place = (int[]) resolved;
-                actions.moveChannel((ChannelNode) dragged, place[0], place[1]);
-            }
-            return true;
-        }
-
-        /** The destination for this drop: a ChannelNode, an {@code {cpid, order}} pair, or null. */
-        private Object resolve(TransferSupport support) {
-            Object dragged = draggedNode(support);
-            if (!(support.getDropLocation() instanceof JTree.DropLocation)) return null;
-            JTree.DropLocation loc = (JTree.DropLocation) support.getDropLocation();
-            if (dragged instanceof ClientEntry) return resolveClientDrop(loc, (ClientEntry) dragged);
-            if (dragged instanceof ChannelNode) return resolveChannelDrop(loc, (ChannelNode) dragged);
-            return null;
-        }
-
-        private Object draggedNode(TransferSupport support) {
-            try {
-                return support.getTransferable().getTransferData(NODE_FLAVOR);
-            } catch (Exception e) {
-                return null;
-            }
-        }
-    }
-
-    /** Offers the dragged node locally and its TS3 link BBCode to other applications. */
-    private static final class NodeTransferable implements Transferable {
-        private final Object node;
-        private final String text;
-
-        NodeTransferable(Object node, String text) {
-            this.node = node;
-            this.text = text;
-        }
-
-        @Override
-        public DataFlavor[] getTransferDataFlavors() {
-            return text == null ? new DataFlavor[]{NODE_FLAVOR}
-                    : new DataFlavor[]{NODE_FLAVOR, DataFlavor.stringFlavor};
-        }
-
-        @Override
-        public boolean isDataFlavorSupported(DataFlavor flavor) {
-            return NODE_FLAVOR.equals(flavor) || (text != null && DataFlavor.stringFlavor.equals(flavor));
-        }
-
-        @Override
-        public Object getTransferData(DataFlavor flavor) throws UnsupportedFlavorException {
-            if (NODE_FLAVOR.equals(flavor)) return node;
-            if (text != null && DataFlavor.stringFlavor.equals(flavor)) return text;
-            throw new UnsupportedFlavorException(flavor);
-        }
-    }
-
-    // ---- group icon strip ----
-
-    /** Gap kept between a row's label and the right-aligned icon strip. */
-    private static final int BADGE_GAP = 8;
-    /** Inset of the strip from the visible right edge. */
-    private static final int BADGE_MARGIN = 4;
-
-    /**
-     * Paints the icons of every visible row — a client's group icons, a channel's own
-     * icon — flush with the right edge of the viewport, the way TeamSpeak lines them up.
-     * Drawing them here rather than in the cell renderer keeps the rows' measured widths
-     * (and thus the selection highlight) tied to the label alone.
-     */
-    private void paintBadges(Graphics g, JTree tree) {
-        Rectangle visible = tree.getVisibleRect();
-        int right = visible.x + visible.width - BADGE_MARGIN;
-        for (int row = 0; row < tree.getRowCount(); row++) {
-            Rectangle bounds = tree.getRowBounds(row);
-            if (bounds == null || bounds.y + bounds.height < visible.y) continue;
-            if (bounds.y > visible.y + visible.height) break;
-
-            TreePath path = tree.getPathForRow(row);
-            Object obj = ((DefaultMutableTreeNode) path.getLastPathComponent()).getUserObject();
-            List<Icon> icons = badgesOf(obj);
-            if (icons.isEmpty()) continue;
-
-            GroupIcons.Row strip = new GroupIcons.Row(icons);
-            int x = Math.max(bounds.x + bounds.width + BADGE_GAP, right - strip.getIconWidth());
-            strip.paintIcon(tree, g, x, bounds.y + (bounds.height - strip.getIconHeight()) / 2);
-        }
-    }
-
-    /** The icon strip a row shows on its right, empty when it has none (yet). */
-    private List<Icon> badgesOf(Object node) {
-        if (node instanceof ClientEntry) {
-            ClientEntry cl = (ClientEntry) node;
-            return groupIcons.iconsOf(
-                    model.serverGroupsOf(cl.serverGroupIds), model.channelGroup(cl.channelGroupId));
-        }
-        if (node instanceof ChannelNode) {
-            ChannelNode ch = (ChannelNode) node;
-            Icon icon = Spacers.isSpacer(ch.name) ? null : groupIcons.icon(ch.iconId);
-            if (icon != null) return List.of(icon);
-        }
-        return List.of();
-    }
-
-    /**
-     * Draws where the drop will land: an insertion line between rows, or an outline
-     * around the row that will receive the dragged node.
-     */
-    private final class DropIndicatorTree extends JTree {
-        /** Set while a drop would move a client into this channel row. */
-        private TreePath highlight;
-
-        DropIndicatorTree(TreeModel model) {
-            super(model);
-        }
-
-        /** Keeps the server row permanently open; collapsing it would hide everything. */
-        @Override
-        public void setExpandedState(TreePath path, boolean state) {
-            if (!state && path.getPathCount() == 1) return;
-            super.setExpandedState(path, state);
-        }
-
-        /**
-         * Widens every repaint request to the full visible width. Swing only asks for
-         * the row rectangle, which stops short of the right-aligned icon strip and would
-         * leave it behind when a row's label changes width.
-         */
-        @Override
-        public void repaint(long tm, int x, int y, int width, int height) {
-            Rectangle visible = getVisibleRect();
-            super.repaint(tm, visible.x, y, visible.width, height);
-        }
-
-        void highlightChannel(TreePath path) {
-            if (path == highlight || (path != null && path.equals(highlight))) return;
-            highlight = path;
-            repaint();
-        }
-
-        @Override
-        protected void paintComponent(Graphics g) {
-            super.paintComponent(g);
-            paintBadges(g, this);
-            JTree.DropLocation loc = getDropLocation();
-            if (loc == null || loc.getPath() == null) return;
-
-            Graphics2D g2 = (Graphics2D) g.create();
-            g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
-            g2.setColor(Theme.ACCENT);
-            if (highlight != null || loc.getChildIndex() < 0) {
-                Rectangle r = getPathBounds(highlight != null ? highlight : loc.getPath());
-                if (r != null) {
-                    g2.setStroke(new BasicStroke(2f));
-                    g2.drawRoundRect(r.x, r.y + 1, r.width - 1, r.height - 3, 4, 4);
-                }
-            } else {
-                Rectangle line = insertLine(loc);
-                if (line != null) {
-                    g2.fillRect(line.x, line.y - 1, line.width, 2);
-                    g2.fillOval(line.x - 3, line.y - 4, 7, 7);
-                }
-            }
-            g2.dispose();
-        }
-
-        /** The 1px-tall strip where the insertion line goes, in tree coordinates. */
-        private Rectangle insertLine(JTree.DropLocation loc) {
-            DefaultMutableTreeNode parent = (DefaultMutableTreeNode) loc.getPath().getLastPathComponent();
-            int index = loc.getChildIndex();
-            if (index < parent.getChildCount()) {
-                Rectangle r = getPathBounds(loc.getPath().pathByAddingChild(parent.getChildAt(index)));
-                return r == null ? null : new Rectangle(r.x, r.y, getWidth() - r.x, 2);
-            }
-            if (parent.getChildCount() == 0) {
-                Rectangle r = getPathBounds(loc.getPath());
-                if (r == null) return null;
-                int x = r.x + getRowHeight();
-                return new Rectangle(x, r.y + r.height, getWidth() - x, 2);
-            }
-            // Past the last child: below that child's whole (expanded) subtree.
-            TreePath lastChild = loc.getPath().pathByAddingChild(parent.getChildAt(parent.getChildCount() - 1));
-            Rectangle head = getPathBounds(lastChild);
-            Rectangle tail = getPathBounds(lastVisibleRow(lastChild));
-            if (head == null || tail == null) return null;
-            return new Rectangle(head.x, tail.y + tail.height, getWidth() - head.x, 2);
-        }
-
-        private TreePath lastVisibleRow(TreePath path) {
-            int row = getRowForPath(path);
-            if (row < 0) return path;
-            for (int i = row + 1; i < getRowCount(); i++) {
-                if (!path.isDescendant(getPathForRow(i))) break;
-                row = i;
-            }
-            return getPathForRow(row);
-        }
-    }
-
-    /** Rebuilds the tree from the model, preserving full expansion. */
     public void rebuild() {
-        root.setUserObject(model.getServerName());
+        Object selected = selectedUserObject();
-        root.removeAllChildren();
+        rebuilding = true;
-        List<ChannelNode> roots = model.buildTree();
+        try {
-        for (ChannelNode c : roots) {
+            root.setUserObject(model.getServerName());
-            root.add(buildChannel(c));
+            root.removeAllChildren();
-        }
+            List<ChannelNode> roots = model.buildTree();
-        treeModel.reload();
+            for (ChannelNode c : roots) {
-        for (int i = 0; i < tree.getRowCount(); i++) {
+                root.add(buildChannel(c));
-            tree.expandRow(i);
+            }
+            treeModel.reload();
+            for (int i = 0; i < tree.getRowCount(); i++) {
+                tree.expandRow(i);
+            }
+            if (selected != null) {
+                TreePath path = pathOf(selected);
+                if (path != null) tree.setSelectionPath(path);
+            }
+        } finally {
+            rebuilding = false;
         }
+        // The selection listener was swallowed above; tell the caller only if it actually changed
+        // (e.g. the previously selected channel/client is gone), since it already knows the rest.
+        Object nowSelected = selectedUserObject();
+        if (nowSelected != selected) actions.onSelectionChanged(nowSelected);
+    }
+
+    private Object selectedUserObject() {
+        TreePath path = tree.getSelectionPath();
+        return path == null ? null : ((DefaultMutableTreeNode) path.getLastPathComponent()).getUserObject();
     }
 
     private DefaultMutableTreeNode buildChannel(ChannelNode c) {
@@ -593,73 +372,4 @@ public final class ServerTreePanel extends JScrollPane {
         }
     }
 
-    /**
-     * Draws a tree row: the status icon and the label. The group icon strip is painted
-     * separately, right-aligned, by {@link #paintBadges}.
-     */
-    private final class Renderer extends DefaultTreeCellRenderer {
-
-        @Override
-        public Component getTreeCellRendererComponent(JTree tree, Object value, boolean sel,
-                                                      boolean expanded, boolean leaf, int row,
-                                                      boolean hasFocus) {
-            super.getTreeCellRendererComponent(tree, value, sel, expanded, leaf, row, hasFocus);
-            setBackgroundNonSelectionColor(Theme.TREE_BG);
-            setBackgroundSelectionColor(Theme.TREE_SELECTION);
-            setBorderSelectionColor(Theme.TREE_SELECTION);
-
-            Object obj = ((DefaultMutableTreeNode) value).getUserObject();
-            if (obj instanceof ChannelNode) {
-                ChannelNode c = (ChannelNode) obj;
-                Spacers.Spacer spacer = Spacers.parse(c.name);
-                if (spacer != null) {
-                    setText(Spacers.render(spacer, 40));
-                    setIcon(null);
-                    setForeground(Theme.IDLE_CLIENT);
-                    setFont(Theme.UI_FONT);
-                } else {
-                    setText(c.name);
-                    setIcon(iconFor(c));
-                    setForeground(Theme.CHANNEL_TEXT);
-                    setFont(Theme.UI_BOLD);
-                }
-            } else if (obj instanceof ClientEntry) {
-                ClientEntry cl = (ClientEntry) obj;
-                String label = cl.nickname;
-                if (cl.away && !cl.awayMessage.isEmpty()) label += "  [" + cl.awayMessage + "]";
-                setText(label);
-                setIcon(iconFor(cl));
-                setForeground(cl.talking ? Theme.TALKING : Theme.TREE_TEXT);
-                setFont(cl.talking ? Theme.UI_BOLD : Theme.UI_FONT);
-            } else {
-                // root / server
-                setText(String.valueOf(obj));
-                setIcon(Icons.server());
-                setForeground(Theme.SERVER_TEXT);
-                setFont(Theme.UI_BOLD);
-            }
-            return this;
-        }
-
-        private ImageIcon iconFor(ChannelNode c) {
-            if (c.hasPassword) return Icons.channelLocked(c.subscribed);
-            if (c.maxClients >= 0 && c.clients.size() >= c.maxClients) return Icons.channelFull(c.subscribed);
-            return Icons.channel(c.subscribed);
-        }
-
-        /** The client's state, in the order the official client gives them priority. */
-        private ImageIcon iconFor(ClientEntry cl) {
-            if (cl.isQuery()) return Icons.clientQuery();
-            if (!cl.outputHardware) return Icons.speakerDisabled();
-            if (cl.outputMuted) return Icons.speakerMuted();
-            if (!cl.inputHardware) return Icons.micDisabled();
-            if (cl.inputMuted) return Icons.micMuted();
-            if (cl.away) return Icons.clientAway();
-            if (cl.channelCommander) {
-                return cl.talking ? Icons.clientCommanderTalking() : Icons.clientCommander();
-            }
-            if (cl.talking) return Icons.clientTalking();
-            return Icons.clientIdle();
-        }
-    }
 }

ts3-client/swing/src/main/java/com/ts3client/ui/SettingsDialog.java

@@ -1,98 +1,40 @@
 package com.ts3client.ui;
 
-import com.ts3client.audio.InputLevel;
 import com.ts3client.audio.OpusParameters;
 import com.ts3client.audio.VoiceInput;
 import com.ts3client.audio.VoiceOutput;
-import com.ts3client.audio.desktop.AudioDevices;
 import com.ts3client.config.Settings;
-import com.ts3client.hotkey.Hotkey;
-import com.ts3client.hotkey.HotkeyAction;
 import com.ts3client.sound.SoundNotifier;
 
-import javax.swing.BorderFactory;
-import javax.swing.Box;
-import javax.swing.ButtonGroup;
 import javax.swing.JButton;
-import javax.swing.JCheckBox;
-import javax.swing.JComboBox;
-import javax.swing.JComponent;
 import javax.swing.JDialog;
-import javax.swing.JLabel;
 import javax.swing.JPanel;
-import javax.swing.JRadioButton;
-import javax.swing.JSlider;
 import javax.swing.JTabbedPane;
-import javax.swing.JToggleButton;
-import javax.swing.Scrollable;
-import javax.swing.SwingUtilities;
 import java.awt.BorderLayout;
 import java.awt.Dimension;
 import java.awt.Frame;
-import java.awt.GridBagConstraints;
+import java.util.function.Consumer;
-import java.awt.GridBagLayout;
-import java.awt.Insets;
-import java.awt.Rectangle;
-import java.util.List;
 
 /**
- * Options dialog: audio device selection plus voice-activation / push-to-talk
+ * Options dialog: a tabbed coordinator over the individual settings pages. Each tab owns
- * tuning with a live input meter. Changes are applied to the running audio
+ * its own controls and reads/writes {@link Settings} on {@link #apply()}; this class wires
- * subsystem immediately and persisted to {@link Settings} on OK.
+ * the tabs that preview themselves live against the running audio subsystem (the device
+ * and voice-activation tabs, which share a single microphone test) and owns the
+ * OK/Cancel/Apply plumbing.
  */
 public final class SettingsDialog extends JDialog {
 
-    /** Preferred widths of the form's field column; rows shrink with the dialog from there. */
-    private static final int FIELD_WIDTH = 240;
-    private static final int SLIDER_WIDTH = 200;
-    private static final int MIN_FIELD_WIDTH = 60;
-
-    private static final int MIN_BITRATE_KBITS = 8;
-    private static final int MAX_BITRATE_KBITS = 160;
-
     private final Settings settings;
     private final VoiceInput liveMic;
     private final VoiceOutput livePlayback;
-    private final SoundNotifier sounds;
-    private final HotkeyService hotkeys;
     private final Runnable onApply;
 
-    private NotificationsPanel notificationsPanel;
+    private final DevicesPanel devicesPanel;
-    private IconPackPanel iconPackPanel;
+    private final VoiceActivationPanel voiceActivationPanel;
-    private ClientVersionPanel clientVersionPanel;
+    private final NotificationsPanel notificationsPanel;
-    private HotkeysPanel hotkeysPanel;
+    private final DesignPanel designPanel;
-
+    private final HotkeysPanel hotkeysPanel;
-    private JComboBox<AudioDevices.Device> inputCombo;
+    private final ClientVersionPanel clientVersionPanel;
-    private JComboBox<AudioDevices.Device> outputCombo;
-    private JSlider inputGain;
-    private JSlider outputVol;
-    private JCheckBox denoiseCheck;
-    private JSlider denoiseLevel;
-    private JCheckBox typingCheck;
-    private JCheckBox agcCheck;
-
-    private JRadioButton vadRadio;
-    private JRadioButton pttRadio;
-    private JRadioButton contRadio;
-    private JComboBox<String> vadModeCombo;
-    private JSlider thresholdSlider;
-    private JSlider speechSlider;
-    private JCheckBox vadOverPttCheck;
-    private JLabel thresholdLabel;
-    private JLabel speechLabel;
-    private LevelMeter meter;
-    private JToggleButton testButton;
-    private JCheckBox loopbackCheck;
-    private JLabel talkIndicator;
-    private JButton pttKeyButton;
-    private JSlider bitrateSlider;
-    private JLabel bitrateLabel;
-    private JSlider complexitySlider;
-    private JCheckBox vbrCheck;
-    private JCheckBox fecCheck;
-    private JCheckBox musicCheck;
-
-    private final MicrophoneTest micTest = new MicrophoneTest(this::onTestLevel, this::onTestTalking);
 
     public SettingsDialog(Frame owner, Settings settings,
                           VoiceInput liveMic, VoiceOutput livePlayback,
@@ -101,20 +43,23 @@ public final class SettingsDialog extends JDialog {
         this.settings = settings;
         this.liveMic = liveMic;
         this.livePlayback = livePlayback;
-        this.sounds = sounds;
         this.onApply = onApply;
-        this.hotkeys = hotkeys;
+
+        notificationsPanel = new NotificationsPanel(settings, sounds);
+        designPanel = new DesignPanel(settings);
+        hotkeysPanel = new HotkeysPanel(hotkeys);
+        clientVersionPanel = new ClientVersionPanel(settings);
+        devicesPanel = new DevicesPanel(settings, livePlayback,
+                this::applyLive, this::restartTest, this::setTestOutputDevice);
+        voiceActivationPanel = new VoiceActivationPanel(settings, liveMic, hotkeys,
+                hotkeysPanel, this::audioSnapshot);
 
         JTabbedPane tabs = new JTabbedPane();
-        tabs.addTab("Playback / Capture", scrollable(buildDevicesTab()));
+        tabs.addTab("Playback / Capture", scrollable(devicesPanel));
-        tabs.addTab("Voice Activation", scrollable(buildVoiceTab()));
+        tabs.addTab("Voice Activation", scrollable(voiceActivationPanel));
-        notificationsPanel = new NotificationsPanel(settings, sounds);
         tabs.addTab("Notifications", notificationsPanel);
-        iconPackPanel = new IconPackPanel(settings);
+        tabs.addTab("Design", designPanel);
-        tabs.addTab("Design", iconPackPanel);
-        hotkeysPanel = new HotkeysPanel(hotkeys);
         tabs.addTab("Hotkeys", hotkeysPanel);
-        clientVersionPanel = new ClientVersionPanel(settings);
         tabs.addTab("Client Version", scrollable(clientVersionPanel));
 
         JPanel buttons = new JPanel(new BorderLayout());
@@ -139,7 +84,7 @@ public final class SettingsDialog extends JDialog {
         addWindowListener(new java.awt.event.WindowAdapter() {
             @Override
             public void windowClosed(java.awt.event.WindowEvent e) {
-                micTest.stop();
+                voiceActivationPanel.stopTest();
             }
         });
 
@@ -149,327 +94,6 @@ public final class SettingsDialog extends JDialog {
         setLocationRelativeTo(owner);
     }
 
-    private JPanel buildDevicesTab() {
-        JPanel p = formPanel();
-        GridBagConstraints c = gbc();
-
-        List<AudioDevices.Device> ins = AudioDevices.inputDevices();
-        List<AudioDevices.Device> outs = AudioDevices.outputDevices();
-
-        inputCombo = new JComboBox<>(ins.toArray(new AudioDevices.Device[0]));
-        outputCombo = new JComboBox<>(outs.toArray(new AudioDevices.Device[0]));
-        selectOrDefault(inputCombo, settings.inputDevice);
-        selectOrDefault(outputCombo, settings.outputDevice);
-
-        String deviceHint = "<html>Named devices are PipeWire's, and are routed through it "
-                + "(so per-application volume and rerouting keep working).<br>"
-                + "<b>ALSA:</b> entries talk to the sound card directly, taking it exclusively.</html>";
-        inputCombo.setToolTipText(deviceHint);
-        outputCombo.setToolTipText(deviceHint);
-        limitWidth(inputCombo, FIELD_WIDTH);
-        limitWidth(outputCombo, FIELD_WIDTH);
-
-        int row = 0;
-        addRow(p, c, row++, new JLabel("Capture device (microphone):"), inputCombo);
-        addRow(p, c, row++, new JLabel("Playback device (speakers):"), outputCombo);
-
-        inputGain = new JSlider(0, 200, (int) Math.round(settings.inputVolume * 100));
-        outputVol = new JSlider(0, 200, (int) Math.round(settings.outputVolume * 100));
-        limitWidth(inputGain, SLIDER_WIDTH);
-        limitWidth(outputVol, SLIDER_WIDTH);
-        addRow(p, c, row++, new JLabel("Microphone gain:"), inputGain);
-        addRow(p, c, row++, new JLabel("Playback volume:"), outputVol);
-
-        outputVol.addChangeListener(e -> {
-            if (livePlayback != null) livePlayback.setMasterVolume(outputVol.getValue() / 100.0);
-        });
-        inputGain.addChangeListener(e ->
-                applyLive(m -> m.setInputGain(inputGain.getValue() / 100.0)));
-        inputCombo.addActionListener(e -> restartTest());
-        outputCombo.addActionListener(e -> micTest.setOutputDevice(comboValue(outputCombo)));
-
-        c.gridx = 0;
-        c.gridy = row++;
-        c.gridwidth = 2;
-        c.insets = new Insets(14, 4, 2, 4);
-        p.add(new JLabel("Noise reduction"), c);
-        c.insets = new Insets(4, 4, 4, 4);
-        c.gridwidth = 1;
-
-        denoiseCheck = new JCheckBox("Remove background noise", settings.denoise);
-        denoiseCheck.setToolTipText("Attempt to filter out background noises.");
-        denoiseLevel = new JSlider(0, 100, (int) Math.round(settings.denoiserLevel * 100));
-        limitWidth(denoiseLevel, SLIDER_WIDTH);
-        denoiseLevel.setToolTipText("Higher = more aggressive noise removal.");
-        typingCheck = new JCheckBox("Typing attenuation", settings.typingAttenuation);
-        typingCheck.setToolTipText("<html><b>Typing attenuation</b> tries to detect and "
-                + "reduce the sounds made by typing.</html>");
-        agcCheck = new JCheckBox("Automatic gain control (AGC)", settings.agc);
-        agcCheck.setToolTipText("<html><b>Automatic gain control</b> normalises your "
-                + "microphone loudness to a target level, boosting quiet mics and taming "
-                + "loud ones.</html>");
-
-        c.gridx = 0;
-        c.gridy = row++;
-        c.gridwidth = 2;
-        p.add(denoiseCheck, c);
-        c.gridwidth = 1;
-        addRow(p, c, row++, new JLabel("Noise removal level:"), denoiseLevel);
-        c.gridx = 0;
-        c.gridy = row++;
-        c.gridwidth = 2;
-        p.add(typingCheck, c);
-        c.gridy = row++;
-        p.add(agcCheck, c);
-        c.gridwidth = 1;
-
-        Runnable syncNoise = () -> {
-            denoiseLevel.setEnabled(denoiseCheck.isSelected());
-            applyLive(m -> {
-                m.setNoiseSuppression(denoiseCheck.isSelected());
-                m.setDenoiserLevel(denoiseLevel.getValue() / 100.0);
-                m.setTypingAttenuation(typingCheck.isSelected());
-                m.setAgc(agcCheck.isSelected());
-            });
-        };
-        denoiseCheck.addActionListener(e -> syncNoise.run());
-        typingCheck.addActionListener(e -> syncNoise.run());
-        agcCheck.addActionListener(e -> syncNoise.run());
-        denoiseLevel.addChangeListener(e ->
-                applyLive(m -> m.setDenoiserLevel(denoiseLevel.getValue() / 100.0)));
-        syncNoise.run();
-
-        // filler
-        c.gridx = 0;
-        c.gridy = row;
-        c.weighty = 1;
-        p.add(Box.createGlue(), c);
-        return p;
-    }
-
-    private JPanel buildVoiceTab() {
-        JPanel p = formPanel();
-        GridBagConstraints c = gbc();
-
-        vadRadio = new JRadioButton("Voice Activation Detection");
-        pttRadio = new JRadioButton("Push-To-Talk");
-        contRadio = new JRadioButton("Continuous");
-        ButtonGroup group = new ButtonGroup();
-        group.add(vadRadio);
-        group.add(pttRadio);
-        group.add(contRadio);
-        switch (settings.inputMode) {
-            case PUSH_TO_TALK:
-                pttRadio.setSelected(true);
-                break;
-            case CONTINUOUS:
-                contRadio.setSelected(true);
-                break;
-            default:
-                vadRadio.setSelected(true);
-        }
-
-        int row = 0;
-        c.gridx = 0;
-        c.gridy = row++;
-        c.gridwidth = 2;
-        p.add(vadRadio, c);
-        c.gridy = row++;
-        p.add(pttRadio, c);
-        c.gridy = row++;
-        p.add(contRadio, c);
-        c.gridwidth = 1;
-
-        meter = new LevelMeter();
-        meter.setThreshold(settings.vadThresholdDb);
-        c.gridx = 0;
-        c.gridy = row;
-        c.gridwidth = 2;
-        c.insets = new Insets(10, 4, 2, 4);
-        p.add(new JLabel("Input level:"), c);
-        c.gridy = ++row;
-        p.add(meter, c);
-        c.insets = new Insets(4, 4, 4, 4);
-        c.gridy = ++row;
-        p.add(buildTestControls(), c);
-        c.gridwidth = 1;
-        row++;
-
-        vadModeCombo = new JComboBox<>(new String[]{"Automatic", "Volume Gate", "Hybrid"});
-        vadModeCombo.setSelectedIndex(vadModeIndex(settings.vadMode));
-        vadModeCombo.addActionListener(e -> micTest.configure(m -> m.setVadMode(currentVadMode())));
-        vadModeCombo.setToolTipText("<html><b>Automatic</b>: intelligent speech detection.<br>"
-                + "<b>Volume Gate</b>: transmit when loud enough.<br>"
-                + "<b>Hybrid</b>: loud enough <i>and</i> detected as speech.</html>");
-        addRow(p, c, row++, new JLabel("Detection:"), vadModeCombo);
-
-        thresholdSlider = new JSlider((int) InputLevel.MIN_DB, (int) InputLevel.MAX_DB,
-                (int) Math.round(settings.vadThresholdDb));
-        thresholdLabel = new JLabel(Math.round(settings.vadThresholdDb) + " dB");
-        thresholdSlider.addChangeListener(e -> {
-            meter.setThreshold(thresholdSlider.getValue());
-            thresholdLabel.setText(thresholdSlider.getValue() + " dB");
-            applyLive(m -> m.setThresholdDb(thresholdSlider.getValue()));
-        });
-        addRow(p, c, row++, new JLabel("Volume gate:"), sliderWithLabel(thresholdSlider, thresholdLabel));
-
-        speechSlider = new JSlider(0, 100, (int) Math.round(settings.speechThreshold * 100));
-        speechLabel = new JLabel(Math.round(settings.speechThreshold * 100) + "%");
-        speechSlider.addChangeListener(e -> {
-            speechLabel.setText(speechSlider.getValue() + "%");
-            applyLive(m -> m.setSpeechThreshold(speechSlider.getValue() / 100.0));
-        });
-        addRow(p, c, row++, new JLabel("Speech threshold:"), sliderWithLabel(speechSlider, speechLabel));
-
-        pttKeyButton = new JButton(pushToTalkHotkeyText());
-        pttKeyButton.setToolTipText("Push-to-talk is a global hotkey; this opens its binding");
-        pttKeyButton.addActionListener(e -> editPushToTalkHotkey());
-        addRow(p, c, row++, new JLabel("Push-to-talk hotkey:"), pttKeyButton);
-
-        vadOverPttCheck = new JCheckBox("Also detect voice while push-to-talk", settings.vadOverPtt);
-        vadOverPttCheck.addActionListener(e ->
-                micTest.configure(m -> m.setVadOverPtt(vadOverPttCheck.isSelected())));
-        c.gridx = 0;
-        c.gridy = row++;
-        c.gridwidth = 2;
-        p.add(vadOverPttCheck, c);
-        c.gridwidth = 1;
-
-        int kbits = Math.max(MIN_BITRATE_KBITS, Math.min(MAX_BITRATE_KBITS, settings.bitrate / 1000));
-        bitrateSlider = new JSlider(MIN_BITRATE_KBITS, MAX_BITRATE_KBITS, kbits);
-        bitrateLabel = new JLabel(kbits + " kbit/s");
-        bitrateSlider.addChangeListener(e -> {
-            bitrateLabel.setText(bitrateSlider.getValue() + " kbit/s");
-            pushOpusLive();
-        });
-        addRow(p, c, row++, new JLabel("Opus bitrate:"),
-                sliderWithLabel(bitrateSlider, bitrateLabel, 70));
-
-        complexitySlider = new JSlider(0, 10, settings.complexity);
-        limitWidth(complexitySlider, SLIDER_WIDTH);
-        complexitySlider.addChangeListener(e -> pushOpusLive());
-        addRow(p, c, row++, new JLabel("Opus complexity:"), complexitySlider);
-
-        vbrCheck = new JCheckBox("Variable bitrate (VBR)", settings.vbr);
-        fecCheck = new JCheckBox("Forward error correction (FEC)", settings.fec);
-        musicCheck = new JCheckBox("Music codec (stereo, higher fidelity)", settings.music);
-        musicCheck.setToolTipText("<html>Transmits <b>OPUS_MUSIC</b>: stereo when the capture "
-                + "device has two channels, and without the voice pre-processing "
-                + "(noise removal, typing attenuation, AGC).<br>"
-                + "Voice mode (<b>OPUS_VOICE</b>) is mono, as in the official client.</html>");
-        vbrCheck.addActionListener(e -> pushOpusLive());
-        fecCheck.addActionListener(e -> pushOpusLive());
-        musicCheck.addActionListener(e -> pushOpusLive());
-        c.gridx = 0;
-        c.gridy = row++;
-        c.gridwidth = 2;
-        p.add(vbrCheck, c);
-        c.gridy = row++;
-        p.add(fecCheck, c);
-        c.gridy = row++;
-        p.add(musicCheck, c);
-        c.gridwidth = 1;
-
-        Runnable syncEnabled = () -> {
-            boolean vad = vadRadio.isSelected();
-            boolean ptt = pttRadio.isSelected();
-            boolean vadContext = vad || (ptt && vadOverPttCheck.isSelected());
-            Settings.VadMode vm = currentVadMode();
-            boolean usesGate = vm != Settings.VadMode.AUTOMATIC;
-            boolean usesSpeech = vm != Settings.VadMode.VOLUME_GATE;
-
-            vadModeCombo.setEnabled(vadContext);
-            thresholdSlider.setEnabled(vadContext && usesGate);
-            speechSlider.setEnabled(vadContext && usesSpeech);
-            pttKeyButton.setEnabled(ptt);
-            vadOverPttCheck.setEnabled(ptt);
-            meter.setShowThreshold(vadContext && usesGate);
-
-            if (liveMic != null) {
-                liveMic.setMode(ptt ? Settings.InputMode.PUSH_TO_TALK
-                        : vad ? Settings.InputMode.VOICE_ACTIVATION
-                        : Settings.InputMode.CONTINUOUS);
-                liveMic.setVadMode(vm);
-                liveMic.setVadOverPtt(vadOverPttCheck.isSelected());
-            }
-        };
-        vadRadio.addActionListener(e -> syncEnabled.run());
-        pttRadio.addActionListener(e -> syncEnabled.run());
-        contRadio.addActionListener(e -> syncEnabled.run());
-        vadModeCombo.addActionListener(e -> syncEnabled.run());
-        vadOverPttCheck.addActionListener(e -> syncEnabled.run());
-        syncEnabled.run();
-
-        c.gridx = 0;
-        c.gridy = row;
-        c.weighty = 1;
-        p.add(Box.createGlue(), c);
-        return p;
-    }
-
-    private static int vadModeIndex(Settings.VadMode m) {
-        switch (m) {
-            case AUTOMATIC:
-                return 0;
-            case VOLUME_GATE:
-                return 1;
-            default:
-                return 2;
-        }
-    }
-
-    private Settings.VadMode currentVadMode() {
-        switch (vadModeCombo.getSelectedIndex()) {
-            case 0:
-                return Settings.VadMode.AUTOMATIC;
-            case 1:
-                return Settings.VadMode.VOLUME_GATE;
-            default:
-                return Settings.VadMode.HYBRID;
-        }
-    }
-
-    /**
-     * The form panel used by both tabs. It follows the scroll pane's width instead of
-     * demanding its own preferred one, so rows stay inside the dialog.
-     */
-    private static JPanel formPanel() {
-        JPanel p = new FormPanel();
-        p.setBorder(BorderFactory.createEmptyBorder(12, 12, 12, 12));
-        return p;
-    }
-
-    private static final class FormPanel extends JPanel implements Scrollable {
-        FormPanel() {
-            super(new GridBagLayout());
-        }
-
-        @Override
-        public Dimension getPreferredScrollableViewportSize() {
-            return getPreferredSize();
-        }
-
-        @Override
-        public int getScrollableUnitIncrement(Rectangle visible, int orientation, int direction) {
-            return 16;
-        }
-
-        @Override
-        public int getScrollableBlockIncrement(Rectangle visible, int orientation, int direction) {
-            return visible.height;
-        }
-
-        @Override
-        public boolean getScrollableTracksViewportWidth() {
-            return true;
-        }
-
-        @Override
-        public boolean getScrollableTracksViewportHeight() {
-            return false;
-        }
-    }
-
     private static javax.swing.JScrollPane scrollable(JPanel content) {
         javax.swing.JScrollPane sp = new javax.swing.JScrollPane(content,
                 javax.swing.ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED,
@@ -479,103 +103,15 @@ public final class SettingsDialog extends JDialog {
         return sp;
     }
 
-    private static JPanel sliderWithLabel(JSlider slider, JLabel valueLabel) {
+    /** Copies the audio tabs into {@code target}, without touching anything else. */
-        return sliderWithLabel(slider, valueLabel, 48);
-    }
-
-    /**
-     * Pairs a slider with its value readout. The readout gets a fixed width wide enough for
-     * the longest value so the slider does not jump around as it is dragged.
-     */
-    private static JPanel sliderWithLabel(JSlider slider, JLabel valueLabel, int labelWidth) {
-        JPanel panel = new JPanel(new BorderLayout(6, 0));
-        limitWidth(slider, SLIDER_WIDTH);
-        panel.add(slider, BorderLayout.CENTER);
-        valueLabel.setPreferredSize(new Dimension(labelWidth, valueLabel.getPreferredSize().height));
-        panel.add(valueLabel, BorderLayout.EAST);
-        return panel;
-    }
-
-    /**
-     * Caps a field's preferred width and lets it shrink: long device names and wide sliders
-     * would otherwise force the form past the dialog's edge, where the scroll pane (which
-     * never scrolls horizontally) simply clips them.
-     */
-    private static void limitWidth(JComponent comp, int preferredWidth) {
-        int height = comp.getPreferredSize().height;
-        comp.setPreferredSize(new Dimension(preferredWidth, height));
-        comp.setMinimumSize(new Dimension(MIN_FIELD_WIDTH, height));
-    }
-
-    private OpusParameters currentOpusParameters() {
-        return new OpusParameters(
-                bitrateSlider.getValue() * 1000,
-                complexitySlider.getValue(),
-                vbrCheck.isSelected(),
-                fecCheck.isSelected(),
-                settings.packetLoss,
-                musicCheck.isSelected());
-    }
-
-    /** Applies the current Opus controls to the running encoder immediately. */
-    private void pushOpusLive() {
-        if (liveMic != null) liveMic.setOpusParameters(currentOpusParameters());
-    }
-
-    private String pushToTalkHotkeyText() {
-        Hotkey ptt = hotkeys.find(HotkeyAction.PTT_ACTIVATE);
-        return ptt == null ? "No hotkey assigned" : hotkeys.display(ptt.combo);
-    }
-
-    /**
-     * Push-to-talk is an ordinary hotkey, so this shortcut edits that binding — adding
-     * it when there is none — rather than keeping a key of its own.
-     */
-    private void editPushToTalkHotkey() {
-        Hotkey existing = hotkeys.find(HotkeyAction.PTT_ACTIVATE);
-        HotkeyDialog dlg = new HotkeyDialog(this, hotkeys,
-                existing == null ? new Hotkey(HotkeyAction.PTT_ACTIVATE, null) : existing);
-        dlg.setVisible(true);
-        if (!dlg.isConfirmed()) return;
-        List<Hotkey> updated = new java.util.ArrayList<>();
-        synchronized (hotkeys.all()) {
-            for (Hotkey h : hotkeys.all()) {
-                if (h != existing) updated.add(h.copy());
-            }
-        }
-        updated.add(dlg.result());
-        hotkeys.replaceAll(updated);
-        pttKeyButton.setText(pushToTalkHotkeyText());
-        hotkeysPanel.reload();
-    }
-
-    /** Copies the audio form into {@code target}, without touching anything else. */
     private void writeAudioSettings(Settings target) {
-        target.inputDevice = comboValue(inputCombo);
+        devicesPanel.writeInto(target);
-        target.outputDevice = comboValue(outputCombo);
+        voiceActivationPanel.writeInto(target);
-        target.inputVolume = inputGain.getValue() / 100.0;
-        target.outputVolume = outputVol.getValue() / 100.0;
-        target.denoise = denoiseCheck.isSelected();
-        target.denoiserLevel = denoiseLevel.getValue() / 100.0;
-        target.typingAttenuation = typingCheck.isSelected();
-        target.agc = agcCheck.isSelected();
-        target.inputMode = pttRadio.isSelected() ? Settings.InputMode.PUSH_TO_TALK
-                : contRadio.isSelected() ? Settings.InputMode.CONTINUOUS
-                : Settings.InputMode.VOICE_ACTIVATION;
-        target.vadMode = currentVadMode();
-        target.vadThresholdDb = thresholdSlider.getValue();
-        target.speechThreshold = speechSlider.getValue() / 100.0;
-        target.vadOverPtt = vadOverPttCheck.isSelected();
-        target.bitrate = bitrateSlider.getValue() * 1000;
-        target.complexity = complexitySlider.getValue();
-        target.vbr = vbrCheck.isSelected();
-        target.fec = fecCheck.isSelected();
-        target.music = musicCheck.isSelected();
     }
 
     /**
-     * The audio form as a standalone {@link Settings}, so the test chain runs with the
+     * The audio tabs as a standalone {@link Settings}, so the microphone test chain runs
-     * values currently on screen rather than the ones last saved.
+     * with the values currently on screen rather than the ones last saved.
      *
      * <p>The test always runs voice activation: it exists to tune the gate, and push-to-talk
      * would need the global hotkey, which belongs to the connected microphone.
@@ -592,7 +128,7 @@ public final class SettingsDialog extends JDialog {
     private void apply() {
         writeAudioSettings(settings);
         notificationsPanel.apply();
-        iconPackPanel.apply();
+        designPanel.apply();
         clientVersionPanel.apply();
         hotkeysPanel.apply();
         settings.save();
@@ -620,134 +156,32 @@ public final class SettingsDialog extends JDialog {
     /** Leaves without applying, putting back the settings that preview themselves live. */
     private void cancel() {
         notificationsPanel.revert();
-        iconPackPanel.revert();
+        designPanel.revert();
         close();
     }
 
     private void close() {
-        micTest.stop();
+        voiceActivationPanel.stopTest();
         dispose();
     }
 
-    // ---- microphone test ----
-
     /**
-     * The test row: a toggle that runs the capture chain, an indicator showing whether the
+     * Applies a live change to the connected microphone and to the microphone test alike.
-     * gate is open, and an optional loopback so you can hear what is being sent.
+     *
+     * <p>Guarded against a null {@code voiceActivationPanel}: the Devices tab applies its
+     * controls once as they are built, which happens before that tab exists.
      */
-    private JPanel buildTestControls() {
+    private void applyLive(Consumer<VoiceInput> change) {
-        JPanel row = new JPanel(new java.awt.FlowLayout(java.awt.FlowLayout.LEFT, 8, 0));
-
-        testButton = new JToggleButton("Begin Test");
-        testButton.setToolTipText("Run the capture chain exactly as it runs while connected, "
-                + "so the bar and the indicator show what would actually be transmitted.");
-        testButton.addActionListener(e -> setTesting(testButton.isSelected()));
-
-        loopbackCheck = new JCheckBox("Hear myself");
-        loopbackCheck.setToolTipText("Play the transmitted audio back through the playback "
-                + "device. Use headphones to avoid feedback.");
-        loopbackCheck.setEnabled(false);
-        loopbackCheck.addActionListener(e -> micTest.setLoopback(loopbackCheck.isSelected()));
-
-        talkIndicator = new JLabel("Not transmitting", Icons.clientIdle(), JLabel.LEFT);
-        talkIndicator.setToolTipText("Lights up while your microphone is open, exactly as "
-                + "other users would see you in the channel list.");
-
-        row.add(testButton);
-        row.add(loopbackCheck);
-        row.add(talkIndicator);
-        return row;
-    }
-
-    private void setTesting(boolean on) {
-        if (on && !micTest.start(audioSnapshot())) {
-            testButton.setSelected(false);
-            testButton.setText("Begin Test");
-            loopbackCheck.setEnabled(false);
-            resetTestIndicators();
-            talkIndicator.setText("Capture device unavailable");
-            return;
-        }
-        if (!on) {
-            micTest.stop();
-            loopbackCheck.setSelected(false);
-            resetTestIndicators();
-        }
-        testButton.setText(on ? "Stop Test" : "Begin Test");
-        loopbackCheck.setEnabled(on);
-    }
-
-    private void resetTestIndicators() {
-        onTestTalking(false);
-        onTestLevel(InputLevel.SILENCE_DB);
-    }
-
-    /** Restarts the test chain, if running, so a device change takes effect. */
-    private void restartTest() {
-        if (micTest.isRunning()) {
-            boolean loopback = loopbackCheck.isSelected();
-            if (micTest.start(audioSnapshot())) {
-                micTest.setLoopback(loopback);
-            } else {
-                setTesting(false);
-                testButton.setSelected(false);
-            }
-        }
-    }
-
-    /** Applies a live change to the connected microphone and to the test one alike. */
-    private void applyLive(java.util.function.Consumer<VoiceInput> change) {
         if (liveMic != null) change.accept(liveMic);
-        micTest.configure(change);
+        if (voiceActivationPanel != null) voiceActivationPanel.configureTest(change);
     }
 
-    private void onTestLevel(double db) {
+    /** Restarts the microphone test, if running, so a device change takes effect. */
-        if (meter != null) meter.setLevel(db);
+    private void restartTest() {
+        if (voiceActivationPanel != null) voiceActivationPanel.restartTest();
     }
 
-    private void onTestTalking(boolean talking) {
+    private void setTestOutputDevice(String deviceId) {
-        if (meter != null) meter.setTransmitting(talking);
+        if (voiceActivationPanel != null) voiceActivationPanel.setTestOutputDevice(deviceId);
-        if (talkIndicator != null) {
-            talkIndicator.setIcon(talking ? Icons.clientTalking() : Icons.clientIdle());
-            talkIndicator.setText(talking ? "Transmitting" : "Not transmitting");
-        }
-    }
-
-    // ---- small helpers ----
-
-    private static GridBagConstraints gbc() {
-        GridBagConstraints c = new GridBagConstraints();
-        c.insets = new Insets(4, 4, 4, 4);
-        c.anchor = GridBagConstraints.WEST;
-        c.fill = GridBagConstraints.HORIZONTAL;
-        return c;
-    }
-
-    private static void addRow(JPanel p, GridBagConstraints c, int row, JLabel label, java.awt.Component field) {
-        c.gridx = 0;
-        c.gridy = row;
-        c.weightx = 0;
-        c.gridwidth = 1;
-        p.add(label, c);
-        c.gridx = 1;
-        c.weightx = 1;
-        p.add(field, c);
-    }
-
-    private static void selectOrDefault(JComboBox<AudioDevices.Device> combo, String deviceId) {
-        if (deviceId != null && !deviceId.isEmpty()) {
-            for (int i = 0; i < combo.getItemCount(); i++) {
-                if (deviceId.equals(combo.getItemAt(i).id())) {
-                    combo.setSelectedIndex(i);
-                    return;
-                }
-            }
-        }
-        combo.setSelectedIndex(0);
-    }
-
-    private static String comboValue(JComboBox<AudioDevices.Device> combo) {
-        AudioDevices.Device d = (AudioDevices.Device) combo.getSelectedItem();
-        return d == null ? "" : d.id();
     }
 }

ts3-client/swing/src/main/java/com/ts3client/ui/Spacers.java

@@ -1,5 +1,10 @@
 package com.ts3client.ui;
 
+import com.ts3client.net.ChannelNode;
+
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
@@ -21,6 +26,9 @@ public final class Spacers {
         }
     }
 
+    /** The tag's identifying part, which is what keeps two spacers' names apart. */
+    private static final Pattern TAG = Pattern.compile("^\\[(?:\\*|[lcr])?spacer([^\\]]*)\\]");
+
     private static final Pattern PATTERN =
             Pattern.compile("^\\[(\\*|[lcr])?spacer[^\\]]*\\](.*)$");
 
@@ -41,6 +49,22 @@ public final class Spacers {
         return parse(channelName) != null;
     }
 
+    /**
+     * A spacer name no channel among {@code siblings} is using: {@code [spacerN]} with the
+     * lowest free N. TeamSpeak needs channel names to be unique, and the number in the tag
+     * is how spacers — which usually all read the same — get away with it.
+     */
+    public static String freeName(List<ChannelNode> siblings) {
+        Set<String> taken = new HashSet<>();
+        for (ChannelNode sibling : siblings) {
+            Matcher m = TAG.matcher(sibling.name == null ? "" : sibling.name);
+            if (m.find()) taken.add(m.group(1));
+        }
+        for (int n = 0; ; n++) {
+            if (taken.add(Integer.toString(n))) return "[spacer" + n + "]";
+        }
+    }
+
     /** Builds the visible label for a spacer at roughly the given character width. */
     public static String render(Spacer s, int width) {
         String caption = s.caption == null ? "" : s.caption;

ts3-client/swing/src/main/java/com/ts3client/ui/Spinners.java

@@ -0,0 +1,27 @@
+package com.ts3client.ui;
+
+import javax.swing.JSpinner;
+import java.awt.Dimension;
+
+/** Shared shaping for the numeric spinners the channel editor is full of. */
+final class Spinners {
+
+    /** Width that fits a five-digit power without swallowing the rest of a form row. */
+    private static final int WIDTH = 80;
+
+    private Spinners() {
+    }
+
+    /**
+     * Keeps a spinner to a sensible width and drops the grouping separator: these hold
+     * permission powers and client counts, which TeamSpeak shows as plain numbers.
+     */
+    static JSpinner compact(JSpinner spinner) {
+        JSpinner.NumberEditor editor = new JSpinner.NumberEditor(spinner, "#");
+        spinner.setEditor(editor);
+        Dimension size = new Dimension(WIDTH, spinner.getPreferredSize().height);
+        spinner.setPreferredSize(size);
+        spinner.setMaximumSize(size);
+        return spinner;
+    }
+}

ts3-client/swing/src/main/java/com/ts3client/ui/StatusBar.java

@@ -0,0 +1,36 @@
+package com.ts3client.ui;
+
+import javax.swing.BorderFactory;
+import javax.swing.JLabel;
+import javax.swing.JPanel;
+import java.awt.BorderLayout;
+
+/** The strip at the bottom of the window: connection status on the left, codec info on the right. */
+final class StatusBar extends JPanel {
+
+    private final JLabel statusLabel = new JLabel("Not connected");
+    private final JLabel codecLabel = new JLabel();
+
+    StatusBar() {
+        super(new BorderLayout());
+        setBackground(Theme.statusBg());
+        setBorder(BorderFactory.createEmptyBorder(3, 8, 3, 8));
+        statusLabel.setFont(Theme.uiFont());
+        codecLabel.setFont(Theme.uiFont());
+        codecLabel.setForeground(Theme.chatSystem());
+        add(statusLabel, BorderLayout.WEST);
+        add(codecLabel, BorderLayout.EAST);
+    }
+
+    void setStatus(String text) {
+        statusLabel.setText(text);
+    }
+
+    void setCodec(String text) {
+        codecLabel.setText(text);
+    }
+
+    String codecText() {
+        return codecLabel.getText();
+    }
+}

ts3-client/swing/src/main/java/com/ts3client/ui/TabDragReorder.java

@@ -0,0 +1,279 @@
+package com.ts3client.ui;
+
+import javax.swing.JComponent;
+import javax.swing.JRootPane;
+import javax.swing.JTabbedPane;
+import javax.swing.SwingUtilities;
+import javax.swing.Timer;
+import java.awt.AlphaComposite;
+import java.awt.Graphics;
+import java.awt.Graphics2D;
+import java.awt.Point;
+import java.awt.Rectangle;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+import java.awt.image.BufferedImage;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Lets the user reorder a {@link JTabbedPane}'s tabs by dragging one sideways over
+ * another, browser-tab style. Snapshots of every tab are drawn on the window's
+ * glass pane: the dragged one follows the cursor's X only (its Y stays put, and it
+ * can't leave the strip) and stays drawn on top; it swaps with whichever neighbour
+ * it reaches the midpoint of. The real tab model is only updated once, when the
+ * mouse is released, and the overlay eases into its final position on top of it.
+ *
+ * <p>Swing delivers drag events only to whichever component originally got the
+ * press, so every component that should start a drag &mdash; the tab strip itself
+ * and each custom tab label &mdash; must be {@link #attach}ed individually.
+ */
+final class TabDragReorder {
+
+    /** Moves the tab at {@code from} to sit where {@code to} currently is. */
+    interface Reorder {
+        void moveTab(int from, int to);
+    }
+
+    /** Below this many pixels of movement, a press is treated as a click, not a drag. */
+    private static final int THRESHOLD = 5;
+    private static final double EASE = 0.35;
+    private static final double SETTLE_EPSILON = 0.5;
+    private static final int FRAME_MS = 15;
+
+    private final JTabbedPane tabbed;
+    private final Reorder reorder;
+
+    private int pressSlot = -1;
+    private Point pressPoint;
+    private boolean dragging;
+    private boolean releasing;
+
+    private Overlay overlay;
+    private List<Tile> order;
+    private Tile draggedTile;
+    private int dragSlot;
+    private int startSlot;
+    private int stripStartX;
+    private int stripWidth;
+    private int grabDx;
+    private Timer timer;
+
+    TabDragReorder(JTabbedPane tabbed, Reorder reorder) {
+        this.tabbed = tabbed;
+        this.reorder = reorder;
+    }
+
+    void attach(JComponent source) {
+        MouseAdapter listener = new MouseAdapter() {
+            @Override
+            public void mousePressed(MouseEvent e) {
+                Point inTabbed = SwingUtilities.convertPoint(e.getComponent(), e.getPoint(), tabbed);
+                pressSlot = tabbed.indexAtLocation(inTabbed.x, inTabbed.y);
+                pressPoint = inTabbed;
+                dragging = false;
+            }
+
+            @Override
+            public void mouseDragged(MouseEvent e) {
+                if (pressSlot < 0) return;
+                Point inTabbed = SwingUtilities.convertPoint(e.getComponent(), e.getPoint(), tabbed);
+                if (!dragging) {
+                    if (pressPoint.distance(inTabbed) < THRESHOLD) return;
+                    dragging = beginDrag(inTabbed);
+                    if (!dragging) return;
+                }
+                dragTo(inTabbed.x);
+            }
+
+            @Override
+            public void mouseReleased(MouseEvent e) {
+                if (dragging) endDrag();
+                pressSlot = -1;
+                dragging = false;
+            }
+        };
+        source.addMouseListener(listener);
+        source.addMouseMotionListener(listener);
+    }
+
+    /** Snapshots every tab and shows them on the glass pane in place of the real strip. */
+    private boolean beginDrag(Point inTabbed) {
+        JRootPane root = tabbed.getRootPane();
+        int n = tabbed.getTabCount();
+        if (root == null || pressSlot < 0 || pressSlot >= n) return false;
+
+        order = new ArrayList<>(n);
+        for (int i = 0; i < n; i++) {
+            Rectangle b = tabbed.getBoundsAt(i);
+            if (b == null || b.isEmpty()) return false;
+            order.add(new Tile(snapshot(b), b.x, b.y, b.width, b.height));
+        }
+        stripStartX = order.get(0).x;
+        stripWidth = 0;
+        for (Tile t : order) stripWidth += t.width;
+        draggedTile = order.get(pressSlot);
+        dragSlot = pressSlot;
+        startSlot = pressSlot;
+        grabDx = inTabbed.x - draggedTile.x;
+        releasing = false;
+
+        if (!(root.getGlassPane() instanceof Overlay)) {
+            root.setGlassPane(new Overlay());
+        }
+        overlay = (Overlay) root.getGlassPane();
+        overlay.origin = SwingUtilities.convertPoint(tabbed, new Point(0, 0), overlay);
+        overlay.tiles = order;
+        overlay.onTop = draggedTile;
+        overlay.setVisible(true);
+        overlay.repaint();
+
+        timer = new Timer(FRAME_MS, e -> tick());
+        timer.start();
+        return true;
+    }
+
+    private BufferedImage snapshot(Rectangle bounds) {
+        BufferedImage img = new BufferedImage(bounds.width, bounds.height, BufferedImage.TYPE_INT_ARGB);
+        Graphics2D g = img.createGraphics();
+        g.setClip(0, 0, bounds.width, bounds.height);
+        g.translate(-bounds.x, -bounds.y);
+        tabbed.paint(g);
+        g.dispose();
+        return img;
+    }
+
+    /**
+     * Swaps the dragged tile with whichever neighbour it has reached the midpoint
+     * of: its trailing edge past the next tile's midpoint when moving right, or its
+     * leading edge past the previous tile's midpoint when moving left. Checked
+     * against the neighbour's target slot rather than its live position, since that
+     * may itself still be mid-animation.
+     */
+    private void dragTo(int cursorX) {
+        int min = stripStartX;
+        int max = stripStartX + stripWidth - draggedTile.width;
+        draggedTile.currentX = Math.max(min, Math.min(max, cursorX - grabDx));
+
+        if (dragSlot + 1 < order.size()) {
+            Tile next = order.get(dragSlot + 1);
+            double rightEdge = draggedTile.currentX + draggedTile.width;
+            if (rightEdge > next.targetX + next.width / 2.0) {
+                swap(dragSlot, dragSlot + 1);
+                return;
+            }
+        }
+        if (dragSlot - 1 >= 0) {
+            Tile prev = order.get(dragSlot - 1);
+            double leftEdge = draggedTile.currentX;
+            if (leftEdge < prev.targetX + prev.width / 2.0) {
+                swap(dragSlot - 1, dragSlot);
+            }
+        }
+    }
+
+    /** Swaps the two adjacent slots {@code a} and {@code b} (one of them the dragged tile's) in {@link #order}, not the real tab model. */
+    private void swap(int a, int b) {
+        int newSlot = dragSlot == a ? b : a;
+        order.remove(draggedTile);
+        order.add(newSlot, draggedTile);
+        dragSlot = newSlot;
+        retarget(false);
+    }
+
+    /** Assigns each tile's slot target from the current {@code order}; the dragged tile follows the cursor instead, unless {@code includeDragged}. */
+    private void retarget(boolean includeDragged) {
+        double x = stripStartX;
+        for (Tile t : order) {
+            if (t != draggedTile || includeDragged) t.targetX = x;
+            x += t.width;
+        }
+    }
+
+    /**
+     * Commits the reorder to the real tab model in one shot. Doing this once here,
+     * rather than per swap while dragging, matters because reordering the real
+     * model can rebuild tab components (new labels, new listeners), which would
+     * otherwise yank the component out from under an in-flight mouse grab.
+     */
+    private void endDrag() {
+        releasing = true;
+        if (dragSlot != startSlot) reorder.moveTab(startSlot, dragSlot);
+        retarget(true);
+    }
+
+    private void tick() {
+        boolean settled = true;
+        for (Tile t : order) {
+            if (t == draggedTile && !releasing) continue;
+            double diff = t.targetX - t.currentX;
+            if (Math.abs(diff) < SETTLE_EPSILON) {
+                t.currentX = t.targetX;
+            } else {
+                t.currentX += diff * EASE;
+                settled = false;
+            }
+        }
+        overlay.repaint();
+        if (releasing && settled) {
+            timer.stop();
+            overlay.tiles = null;
+            overlay.onTop = null;
+            overlay.setVisible(false);
+            order = null;
+            draggedTile = null;
+        }
+    }
+
+    /** One tab's snapshot, animating from {@link #currentX} toward {@link #targetX}. */
+    private static final class Tile {
+        final BufferedImage image;
+        final int x, y, width, height;
+        double currentX;
+        double targetX;
+
+        Tile(BufferedImage image, int x, int y, int width, int height) {
+            this.image = image;
+            this.x = x;
+            this.y = y;
+            this.width = width;
+            this.height = height;
+            this.currentX = x;
+            this.targetX = x;
+        }
+    }
+
+    /** A transparent overlay on the glass pane that paints every tab's animated snapshot. */
+    private static final class Overlay extends JComponent {
+        List<Tile> tiles;
+        /** Painted last (on top) so it stays above tabs it's currently overlapping while dragged. */
+        Tile onTop;
+        Point origin = new Point();
+
+        Overlay() {
+            setOpaque(false);
+        }
+
+        /** Never claims mouse events, so drags keep reaching the component that was actually pressed. */
+        @Override
+        public boolean contains(int x, int y) {
+            return false;
+        }
+
+        @Override
+        protected void paintComponent(Graphics g) {
+            if (tiles == null) return;
+            Graphics2D g2 = (Graphics2D) g.create();
+            g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.9f));
+            for (Tile t : tiles) {
+                if (t != onTop) draw(g2, t);
+            }
+            if (onTop != null) draw(g2, onTop);
+            g2.dispose();
+        }
+
+        private void draw(Graphics2D g2, Tile t) {
+            g2.drawImage(t.image, origin.x + (int) Math.round(t.currentX), origin.y + t.y, null);
+        }
+    }
+}

ts3-client/swing/src/main/java/com/ts3client/ui/Theme.java

@@ -1,37 +1,156 @@
 package com.ts3client.ui;
 
+import com.formdev.flatlaf.ui.FlatUIUtils;
+
+import javax.swing.UIManager;
 import java.awt.Color;
 import java.awt.Font;
 
-/** Central palette + fonts approximating the light TeamSpeak 3 look. */
+/**
+ * The palette and fonts the client paints with, on top of the active look-and-feel.
+ *
+ * <p>Surfaces (window, tree, chat background) and fonts come straight from the
+ * look-and-feel, so the client follows whatever FlatLaf theme is installed. The
+ * status colours TeamSpeak gives meaning to — talking, away, muted, channel and
+ * server names — are ours, in a light and a dark variant; {@link #refresh()} picks
+ * the variant matching the installed theme.
+ */
 public final class Theme {
 
-    public static final Color WINDOW_BG = new Color(0xF0F0F0);
+    private static boolean dark;
-    public static final Color TREE_BG = new Color(0xFFFFFF);
-    public static final Color TREE_SELECTION = new Color(0xCFE3FB);
-    public static final Color TREE_TEXT = new Color(0x1E1E1E);
-    public static final Color CHANNEL_TEXT = new Color(0x21486B);
-    public static final Color SERVER_TEXT = new Color(0x123456);
-
-    public static final Color TALKING = new Color(0x33B35A);
-    public static final Color IDLE_CLIENT = new Color(0x6E7B87);
-    public static final Color AWAY = new Color(0xC98A1B);
-    public static final Color MUTED = new Color(0xC0392B);
-
-    public static final Color TOOLBAR_BG = new Color(0xE6E9ED);
-    public static final Color STATUS_BG = new Color(0xE6E9ED);
-    public static final Color ACCENT = new Color(0x2C7BE5);
-
-    public static final Color CHAT_BG = new Color(0xFAFAFA);
-    public static final Color CHAT_SYSTEM = new Color(0x8A8A8A);
-    public static final Color CHAT_NAME = new Color(0x2C7BE5);
-    public static final Color CHAT_TEXT = new Color(0x202020);
-    /** Links that leave the client, distinct from the colour used for identities. */
-    public static final Color LINK = new Color(0x1A5FB4);
-
-    public static final Font UI_FONT = new Font("SansSerif", Font.PLAIN, 12);
-    public static final Font UI_BOLD = new Font("SansSerif", Font.BOLD, 12);
 
     private Theme() {
     }
+
+    /** Re-reads the installed look-and-feel; call after changing it. */
+    static void refresh() {
+        Color bg = UIManager.getColor("Panel.background");
+        dark = bg != null && luminance(bg) < 0.5;
+    }
+
+    public static boolean isDark() {
+        return dark;
+    }
+
+    // ---- fonts ----
+
+    public static Font uiFont() {
+        Font f = UIManager.getFont("Label.font");
+        return f != null ? f : new Font("SansSerif", Font.PLAIN, 12);
+    }
+
+    public static Font uiBold() {
+        return uiFont().deriveFont(Font.BOLD);
+    }
+
+    // ---- surfaces, from the look-and-feel ----
+
+    public static Color windowBg() {
+        return ui("Panel.background", 0xF0F0F0, 0x282828);
+    }
+
+    public static Color toolbarBg() {
+        return ui("ToolBar.background", 0xE6E9ED, 0x282828);
+    }
+
+    public static Color statusBg() {
+        return windowBg();
+    }
+
+    public static Color treeBg() {
+        return ui("Tree.background", 0xFFFFFF, 0x1E1E1E);
+    }
+
+    public static Color treeText() {
+        return ui("Tree.foreground", 0x1E1E1E, 0xE0E0E0);
+    }
+
+    public static Color treeSelection() {
+        return ui("Tree.selectionBackground", 0xCFE3FB, 0x364B6F);
+    }
+
+    /**
+     * Behind the row the pointer is over: the same wash the menu bar puts behind a hovered
+     * menu. The look-and-feel states it as a shift of whatever surface it sits on, and the
+     * menu bar resolves it against the window, so this does too — a row hover and a menu
+     * hover then carry the very same colour.
+     */
+    public static Color hover() {
+        return FlatUIUtils.deriveColor(ui("MenuBar.hoverBackground", 0xE6E6E6, 0x3D3D3D), windowBg());
+    }
+
+    public static Color chatBg() {
+        return ui("TextPane.background", 0xFAFAFA, 0x1E1E1E);
+    }
+
+    public static Color border() {
+        return ui("Component.borderColor", 0xD0D0D0, 0x3E3E3E);
+    }
+
+    public static Color chatText() {
+        return ui("TextPane.foreground", 0x202020, 0xE0E0E0);
+    }
+
+    // ---- status colours ----
+
+    public static Color channelText() {
+        return pick(0x21486B, 0xFFFFFF);
+    }
+
+    /** The colour of a chat line about what happened on the server. */
+    public static Color chatEvent() {
+        return pick(0x21486B, 0x8FBCE6);
+    }
+
+    public static Color serverText() {
+        return pick(0x123456, 0xDCE8F5);
+    }
+
+    public static Color talking() {
+        return pick(0x33B35A, 0x4CC479);
+    }
+
+    public static Color idleClient() {
+        return pick(0x6E7B87, 0x9AA6B2);
+    }
+
+    public static Color away() {
+        return pick(0xC98A1B, 0xE0A83C);
+    }
+
+    public static Color muted() {
+        return pick(0xC0392B, 0xE05C4C);
+    }
+
+    public static Color accent() {
+        return pick(0x2C7BE5, 0x5C9BEE);
+    }
+
+    public static Color chatSystem() {
+        return pick(0x8A8A8A, 0x9A9A9A);
+    }
+
+    public static Color chatName() {
+        return accent();
+    }
+
+    /** Links that leave the client, distinct from the colour used for identities. */
+    public static Color link() {
+        return pick(0x1A5FB4, 0x6EA8FF);
+    }
+
+    private static Color pick(int light, int darkRgb) {
+        return new Color(dark ? darkRgb : light);
+    }
+
+    private static Color ui(String key, int lightFallback, int darkFallback) {
+        // Returned as the look-and-feel's own UIResource colour, so components painted with
+        // it are recoloured automatically when the look-and-feel is switched.
+        Color c = UIManager.getColor(key);
+        return c != null ? c : pick(lightFallback, darkFallback);
+    }
+
+    private static double luminance(Color c) {
+        return (0.2126 * c.getRed() + 0.7152 * c.getGreen() + 0.0722 * c.getBlue()) / 255.0;
+    }
 }

ts3-client/swing/src/main/java/com/ts3client/ui/VoiceActivationPanel.java

@@ -0,0 +1,406 @@
+package com.ts3client.ui;
+
+import com.ts3client.audio.InputLevel;
+import com.ts3client.audio.OpusParameters;
+import com.ts3client.audio.VoiceInput;
+import com.ts3client.config.Settings;
+import com.ts3client.hotkey.Hotkey;
+import com.ts3client.hotkey.HotkeyAction;
+
+import javax.swing.Box;
+import javax.swing.ButtonGroup;
+import javax.swing.JButton;
+import javax.swing.JCheckBox;
+import javax.swing.JComboBox;
+import javax.swing.JLabel;
+import javax.swing.JPanel;
+import javax.swing.JRadioButton;
+import javax.swing.JSlider;
+import javax.swing.JToggleButton;
+import java.awt.GridBagConstraints;
+import java.awt.Insets;
+import java.util.List;
+import java.util.function.Consumer;
+import java.util.function.Supplier;
+
+/**
+ * Options dialog's "Voice Activation" tab: input mode (VAD / push-to-talk / continuous),
+ * the detection tuning with a live input meter, and the Opus encoder controls.
+ *
+ * <p>Owns the microphone test (start/stop button, loopback, indicator): it runs a real
+ * capture chain built from the form's current values, plus whatever the "Playback / Capture"
+ * tab currently has on screen, via {@code audioSnapshot}.
+ */
+final class VoiceActivationPanel extends FormPanel {
+
+    private static final int MIN_BITRATE_KBITS = 8;
+    private static final int MAX_BITRATE_KBITS = 160;
+
+    private final Settings settings;
+    private final VoiceInput liveMic;
+    private final HotkeyService hotkeys;
+    private final HotkeysPanel hotkeysPanel;
+    private final Supplier<Settings> audioSnapshot;
+    private final MicrophoneTest micTest = new MicrophoneTest(this::onTestLevel, this::onTestTalking);
+
+    private final JRadioButton vadRadio;
+    private final JRadioButton pttRadio;
+    private final JRadioButton contRadio;
+    private final JComboBox<String> vadModeCombo;
+    private final JSlider thresholdSlider;
+    private final JSlider speechSlider;
+    private final JCheckBox vadOverPttCheck;
+    private final LevelMeter meter;
+    private JToggleButton testButton;
+    private JCheckBox loopbackCheck;
+    private JLabel talkIndicator;
+    private final JButton pttKeyButton;
+    private final JSlider bitrateSlider;
+    private final JSlider complexitySlider;
+    private final JCheckBox vbrCheck;
+    private final JCheckBox fecCheck;
+    private final JCheckBox musicCheck;
+
+    VoiceActivationPanel(Settings settings, VoiceInput liveMic, HotkeyService hotkeys,
+                          HotkeysPanel hotkeysPanel, Supplier<Settings> audioSnapshot) {
+        this.settings = settings;
+        this.liveMic = liveMic;
+        this.hotkeys = hotkeys;
+        this.hotkeysPanel = hotkeysPanel;
+        this.audioSnapshot = audioSnapshot;
+
+        GridBagConstraints c = gbc();
+
+        vadRadio = new JRadioButton("Voice Activation Detection");
+        pttRadio = new JRadioButton("Push-To-Talk");
+        contRadio = new JRadioButton("Continuous");
+        ButtonGroup group = new ButtonGroup();
+        group.add(vadRadio);
+        group.add(pttRadio);
+        group.add(contRadio);
+        switch (settings.inputMode) {
+            case PUSH_TO_TALK:
+                pttRadio.setSelected(true);
+                break;
+            case CONTINUOUS:
+                contRadio.setSelected(true);
+                break;
+            default:
+                vadRadio.setSelected(true);
+        }
+
+        int row = 0;
+        c.gridx = 0;
+        c.gridy = row++;
+        c.gridwidth = 2;
+        add(vadRadio, c);
+        c.gridy = row++;
+        add(pttRadio, c);
+        c.gridy = row++;
+        add(contRadio, c);
+        c.gridwidth = 1;
+
+        meter = new LevelMeter();
+        meter.setThreshold(settings.vadThresholdDb);
+        c.gridx = 0;
+        c.gridy = row;
+        c.gridwidth = 2;
+        c.insets = new Insets(10, 4, 2, 4);
+        add(new JLabel("Input level:"), c);
+        c.gridy = ++row;
+        add(meter, c);
+        c.insets = new Insets(4, 4, 4, 4);
+        c.gridy = ++row;
+        add(buildTestControls(), c);
+        c.gridwidth = 1;
+        row++;
+
+        vadModeCombo = new JComboBox<>(new String[]{"Automatic", "Volume Gate", "Hybrid"});
+        vadModeCombo.setSelectedIndex(vadModeIndex(settings.vadMode));
+        vadModeCombo.addActionListener(e -> micTest.configure(m -> m.setVadMode(currentVadMode())));
+        vadModeCombo.setToolTipText("<html><b>Automatic</b>: intelligent speech detection.<br>"
+                + "<b>Volume Gate</b>: transmit when loud enough.<br>"
+                + "<b>Hybrid</b>: loud enough <i>and</i> detected as speech.</html>");
+        addRow(this, c, row++, new JLabel("Detection:"), vadModeCombo);
+
+        thresholdSlider = new JSlider((int) InputLevel.MIN_DB, (int) InputLevel.MAX_DB,
+                (int) Math.round(settings.vadThresholdDb));
+        JLabel thresholdLabel = new JLabel(Math.round(settings.vadThresholdDb) + " dB");
+        thresholdSlider.addChangeListener(e -> {
+            meter.setThreshold(thresholdSlider.getValue());
+            thresholdLabel.setText(thresholdSlider.getValue() + " dB");
+            applyLive(m -> m.setThresholdDb(thresholdSlider.getValue()));
+        });
+        addRow(this, c, row++, new JLabel("Volume gate:"), sliderWithLabel(thresholdSlider, thresholdLabel));
+
+        speechSlider = new JSlider(0, 100, (int) Math.round(settings.speechThreshold * 100));
+        JLabel speechLabel = new JLabel(Math.round(settings.speechThreshold * 100) + "%");
+        speechSlider.addChangeListener(e -> {
+            speechLabel.setText(speechSlider.getValue() + "%");
+            applyLive(m -> m.setSpeechThreshold(speechSlider.getValue() / 100.0));
+        });
+        addRow(this, c, row++, new JLabel("Speech threshold:"), sliderWithLabel(speechSlider, speechLabel));
+
+        pttKeyButton = new JButton(pushToTalkHotkeyText());
+        pttKeyButton.setToolTipText("Push-to-talk is a global hotkey; this opens its binding");
+        pttKeyButton.addActionListener(e -> editPushToTalkHotkey());
+        addRow(this, c, row++, new JLabel("Push-to-talk hotkey:"), pttKeyButton);
+
+        vadOverPttCheck = new JCheckBox("Also detect voice while push-to-talk", settings.vadOverPtt);
+        vadOverPttCheck.addActionListener(e ->
+                micTest.configure(m -> m.setVadOverPtt(vadOverPttCheck.isSelected())));
+        c.gridx = 0;
+        c.gridy = row++;
+        c.gridwidth = 2;
+        add(vadOverPttCheck, c);
+        c.gridwidth = 1;
+
+        int kbits = Math.max(MIN_BITRATE_KBITS, Math.min(MAX_BITRATE_KBITS, settings.bitrate / 1000));
+        bitrateSlider = new JSlider(MIN_BITRATE_KBITS, MAX_BITRATE_KBITS, kbits);
+        JLabel bitrateLabel = new JLabel(kbits + " kbit/s");
+        bitrateSlider.addChangeListener(e -> {
+            bitrateLabel.setText(bitrateSlider.getValue() + " kbit/s");
+            pushOpusLive();
+        });
+        addRow(this, c, row++, new JLabel("Opus bitrate:"),
+                sliderWithLabel(bitrateSlider, bitrateLabel, 70));
+
+        complexitySlider = new JSlider(0, 10, settings.complexity);
+        limitWidth(complexitySlider, SLIDER_WIDTH);
+        complexitySlider.addChangeListener(e -> pushOpusLive());
+        addRow(this, c, row++, new JLabel("Opus complexity:"), complexitySlider);
+
+        vbrCheck = new JCheckBox("Variable bitrate (VBR)", settings.vbr);
+        fecCheck = new JCheckBox("Forward error correction (FEC)", settings.fec);
+        musicCheck = new JCheckBox("Music codec (stereo, higher fidelity)", settings.music);
+        musicCheck.setToolTipText("<html>Transmits <b>OPUS_MUSIC</b>: stereo when the capture "
+                + "device has two channels, and without the voice pre-processing "
+                + "(noise removal, typing attenuation, AGC).<br>"
+                + "Voice mode (<b>OPUS_VOICE</b>) is mono, as in the official client.</html>");
+        vbrCheck.addActionListener(e -> pushOpusLive());
+        fecCheck.addActionListener(e -> pushOpusLive());
+        musicCheck.addActionListener(e -> pushOpusLive());
+        c.gridx = 0;
+        c.gridy = row++;
+        c.gridwidth = 2;
+        add(vbrCheck, c);
+        c.gridy = row++;
+        add(fecCheck, c);
+        c.gridy = row++;
+        add(musicCheck, c);
+        c.gridwidth = 1;
+
+        Runnable syncEnabled = () -> {
+            boolean vad = vadRadio.isSelected();
+            boolean ptt = pttRadio.isSelected();
+            boolean vadContext = vad || (ptt && vadOverPttCheck.isSelected());
+            Settings.VadMode vm = currentVadMode();
+            boolean usesGate = vm != Settings.VadMode.AUTOMATIC;
+            boolean usesSpeech = vm != Settings.VadMode.VOLUME_GATE;
+
+            vadModeCombo.setEnabled(vadContext);
+            thresholdSlider.setEnabled(vadContext && usesGate);
+            speechSlider.setEnabled(vadContext && usesSpeech);
+            pttKeyButton.setEnabled(ptt);
+            vadOverPttCheck.setEnabled(ptt);
+            meter.setShowThreshold(vadContext && usesGate);
+
+            if (liveMic != null) {
+                liveMic.setMode(ptt ? Settings.InputMode.PUSH_TO_TALK
+                        : vad ? Settings.InputMode.VOICE_ACTIVATION
+                        : Settings.InputMode.CONTINUOUS);
+                liveMic.setVadMode(vm);
+                liveMic.setVadOverPtt(vadOverPttCheck.isSelected());
+            }
+        };
+        vadRadio.addActionListener(e -> syncEnabled.run());
+        pttRadio.addActionListener(e -> syncEnabled.run());
+        contRadio.addActionListener(e -> syncEnabled.run());
+        vadModeCombo.addActionListener(e -> syncEnabled.run());
+        vadOverPttCheck.addActionListener(e -> syncEnabled.run());
+        syncEnabled.run();
+
+        c.gridx = 0;
+        c.gridy = row;
+        c.weighty = 1;
+        add(Box.createGlue(), c);
+    }
+
+    /** Copies the form into {@code target}, without touching anything else. */
+    void writeInto(Settings target) {
+        target.inputMode = pttRadio.isSelected() ? Settings.InputMode.PUSH_TO_TALK
+                : contRadio.isSelected() ? Settings.InputMode.CONTINUOUS
+                : Settings.InputMode.VOICE_ACTIVATION;
+        target.vadMode = currentVadMode();
+        target.vadThresholdDb = thresholdSlider.getValue();
+        target.speechThreshold = speechSlider.getValue() / 100.0;
+        target.vadOverPtt = vadOverPttCheck.isSelected();
+        target.bitrate = bitrateSlider.getValue() * 1000;
+        target.complexity = complexitySlider.getValue();
+        target.vbr = vbrCheck.isSelected();
+        target.fec = fecCheck.isSelected();
+        target.music = musicCheck.isSelected();
+    }
+
+    /** Applies a change to the microphone test, if it is running; used by the Devices tab too. */
+    void configureTest(Consumer<VoiceInput> change) {
+        micTest.configure(change);
+    }
+
+    /** The playback device to loop the test through; used by the Devices tab's output picker. */
+    void setTestOutputDevice(String deviceId) {
+        micTest.setOutputDevice(deviceId);
+    }
+
+    /** Restarts the test chain, if running, so a device change on the Devices tab takes effect. */
+    void restartTest() {
+        if (micTest.isRunning()) {
+            boolean loopback = loopbackCheck.isSelected();
+            if (micTest.start(audioSnapshot.get())) {
+                micTest.setLoopback(loopback);
+            } else {
+                setTesting(false);
+                testButton.setSelected(false);
+            }
+        }
+    }
+
+    void stopTest() {
+        micTest.stop();
+    }
+
+    private static int vadModeIndex(Settings.VadMode m) {
+        switch (m) {
+            case AUTOMATIC:
+                return 0;
+            case VOLUME_GATE:
+                return 1;
+            default:
+                return 2;
+        }
+    }
+
+    private Settings.VadMode currentVadMode() {
+        switch (vadModeCombo.getSelectedIndex()) {
+            case 0:
+                return Settings.VadMode.AUTOMATIC;
+            case 1:
+                return Settings.VadMode.VOLUME_GATE;
+            default:
+                return Settings.VadMode.HYBRID;
+        }
+    }
+
+    private OpusParameters currentOpusParameters() {
+        return new OpusParameters(
+                bitrateSlider.getValue() * 1000,
+                complexitySlider.getValue(),
+                vbrCheck.isSelected(),
+                fecCheck.isSelected(),
+                settings.packetLoss,
+                musicCheck.isSelected());
+    }
+
+    /** Applies the current Opus controls to the running encoder immediately. */
+    private void pushOpusLive() {
+        if (liveMic != null) liveMic.setOpusParameters(currentOpusParameters());
+    }
+
+    private String pushToTalkHotkeyText() {
+        Hotkey ptt = hotkeys.find(HotkeyAction.PTT_ACTIVATE);
+        return ptt == null ? "No hotkey assigned" : hotkeys.display(ptt.combo);
+    }
+
+    /**
+     * Push-to-talk is an ordinary hotkey, so this shortcut edits that binding — adding
+     * it when there is none — rather than keeping a key of its own.
+     */
+    private void editPushToTalkHotkey() {
+        Hotkey existing = hotkeys.find(HotkeyAction.PTT_ACTIVATE);
+        HotkeyDialog dlg = new HotkeyDialog(javax.swing.SwingUtilities.getWindowAncestor(this),
+                hotkeys, existing == null ? new Hotkey(HotkeyAction.PTT_ACTIVATE, null) : existing);
+        dlg.setVisible(true);
+        if (!dlg.isConfirmed()) return;
+        List<Hotkey> updated = new java.util.ArrayList<>();
+        synchronized (hotkeys.all()) {
+            for (Hotkey h : hotkeys.all()) {
+                if (h != existing) updated.add(h.copy());
+            }
+        }
+        updated.add(dlg.result());
+        hotkeys.replaceAll(updated);
+        pttKeyButton.setText(pushToTalkHotkeyText());
+        hotkeysPanel.reload();
+    }
+
+    /** Applies a live change to the connected microphone and to the test one alike. */
+    private void applyLive(Consumer<VoiceInput> change) {
+        if (liveMic != null) change.accept(liveMic);
+        micTest.configure(change);
+    }
+
+    // ---- microphone test ----
+
+    /**
+     * The test row: a toggle that runs the capture chain, an indicator showing whether the
+     * gate is open, and an optional loopback so you can hear what is being sent.
+     */
+    private JPanel buildTestControls() {
+        JPanel row = new JPanel(new java.awt.FlowLayout(java.awt.FlowLayout.LEFT, 8, 0));
+
+        testButton = new JToggleButton("Begin Test");
+        testButton.setToolTipText("Run the capture chain exactly as it runs while connected, "
+                + "so the bar and the indicator show what would actually be transmitted.");
+        testButton.addActionListener(e -> setTesting(testButton.isSelected()));
+
+        loopbackCheck = new JCheckBox("Hear myself");
+        loopbackCheck.setToolTipText("Play the transmitted audio back through the playback "
+                + "device. Use headphones to avoid feedback.");
+        loopbackCheck.setEnabled(false);
+        loopbackCheck.addActionListener(e -> micTest.setLoopback(loopbackCheck.isSelected()));
+
+        talkIndicator = new JLabel("Not transmitting", Icons.clientIdle(), JLabel.LEFT);
+        talkIndicator.setToolTipText("Lights up while your microphone is open, exactly as "
+                + "other users would see you in the channel list.");
+
+        row.add(testButton);
+        row.add(loopbackCheck);
+        row.add(talkIndicator);
+        return row;
+    }
+
+    private void setTesting(boolean on) {
+        if (on && !micTest.start(audioSnapshot.get())) {
+            testButton.setSelected(false);
+            testButton.setText("Begin Test");
+            loopbackCheck.setEnabled(false);
+            resetTestIndicators();
+            talkIndicator.setText("Capture device unavailable");
+            return;
+        }
+        if (!on) {
+            micTest.stop();
+            loopbackCheck.setSelected(false);
+            resetTestIndicators();
+        }
+        testButton.setText(on ? "Stop Test" : "Begin Test");
+        loopbackCheck.setEnabled(on);
+    }
+
+    private void resetTestIndicators() {
+        onTestTalking(false);
+        onTestLevel(InputLevel.SILENCE_DB);
+    }
+
+    private void onTestLevel(double db) {
+        if (meter != null) meter.setLevel(db);
+    }
+
+    private void onTestTalking(boolean talking) {
+        if (meter != null) meter.setTransmitting(talking);
+        if (talkIndicator != null) {
+            talkIndicator.setIcon(talking ? Icons.clientTalking() : Icons.clientIdle());
+            talkIndicator.setText(talking ? "Transmitting" : "Not transmitting");
+        }
+    }
+}

ts3-client/swing/src/main/resources/com/ts3client/ui/laf/FlatDarkLaf.properties

@@ -0,0 +1,17 @@
+#
+# A darker dark theme than FlatLaf's own, keyed to the toolbar's #282828.
+#
+# Three levels of surface: the window chrome (toolbar, panels, status bar) at
+# @background, the tab strips one step below it, and the content the client shows
+# (channel tree, chat log, text fields, lists) one step below those.
+#
+
+@background = #282828
+@foreground = #e0e0e0
+@componentBackground = #1e1e1e
+@menuBackground = #232323
+
+# Selected channel tree row, and every other selection with it.
+@selectionBackground = #364b6f
+
+TabbedPane.background = #232323

ts3-client/swing/src/main/resources/com/ts3client/ui/laf/FlatLaf.properties

@@ -0,0 +1,14 @@
+#
+# Look-and-feel defaults for both themes. Loaded by FlatLaf itself, on top of the
+# theme's own properties; see LookAndFeelManager.
+#
+
+# Softer corners than FlatLaf's default, and a tab strip with room to breathe.
+Component.arc = 6
+Button.arc = 6
+Component.focusWidth = 1
+TabbedPane.tabHeight = 26
+
+# A read-only editor pane is a chat log or an information view here, not a disabled
+# input, so it keeps the content background instead of the window's.
+EditorPane.inactiveBackground = @componentBackground