Global hotkeys, in TeamSpeak's own shape

Bindings are captured system-wide rather than only while the window has
focus: X11's RECORD extension where the X server sees every key, and a
/dev/input reader as the Wayland fallback. Any key can act as a modifier,
mouse buttons included, as TS3 allows.

The action catalogue, its three categories and the "advanced actions"
split are reverse-engineered from the original client; actions this
client cannot perform are listed but greyed out. Push-to-talk becomes one
of these hotkeys, so the old focus-bound pushToTalkKey setting is gone and
the Voice Activation button edits that binding instead.

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

ts3-client/README.md

@@ -80,6 +80,25 @@ frontend supplies its own UI and audio backend while reusing `core` unchanged.
 - **Status bar** shows the server name, user count and live ping.
 - Change your nickname, mute/deafen from the toolbar.
 
+### Hotkeys
+- **Global hotkeys**, as in TeamSpeak 3: single keys or combinations (any key can act
+  as the modifier) and mouse buttons including *Mouse 4* / *Mouse 5*, working
+  system-wide rather than only while the window has focus. Configure them in
+  **Options → Hotkeys**.
+- Per binding you choose whether it **triggers on key down or on key up**, and whether
+  it applies **on the active server** only or to every connected one (checkbox off).
+  Push-to-talk style actions ignore the trigger setting and simply last while held.
+- The action list is TeamSpeak's own, reverse-engineered from its hotkey dialog:
+  three categories (*Server*, *Self*, *Misc*) and a **"Show advanced actions"**
+  checkbox that reveals the rest, exactly as the original hides all but the everyday
+  actions. Actions this client does not implement are listed but greyed out.
+- Push-to-talk is one of those hotkeys; the button in **Options → Voice Activation**
+  edits that binding.
+- Capture uses X11's RECORD extension, which needs no privileges and does not swallow
+  the keystroke. On Wayland the X server never sees keys aimed at other applications,
+  so the client falls back to reading `/dev/input/event*` — for which your user has to
+  be in the `input` group. The Hotkeys tab says which backend is in use, or why none is.
+
 ### Notification sounds
 - **Sound packs** in TeamSpeak's own format: a folder of waves plus a `settings.ini`
   mapping actions (`CONNECTION_CONNECTED`, `CLIENT_MOVED_TO_CURRENT_CHANNEL_STAYS`, …)
@@ -151,6 +170,12 @@ core/   com.ts3client
 ├── gfx
 │   ├── IconPack             an icon pack zip/folder + its settings.ini mapping
 │   └── IconPacks            discovery of installed packs
+├── hotkey
+│   ├── HotkeyAction         catalogue of TeamSpeak's hotkey actions (RE'd from its binary)
+│   ├── Hotkey/HotkeyCombo   one binding: keys, trigger edge, server scope, argument
+│   ├── Hotkeys              persisted bindings (~/.ts3jclient/hotkeys.properties)
+│   ├── GlobalInputHook      platform hook interface: system-wide key/button events
+│   └── HotkeyEngine         held-key tracking, combination matching, recording
 ├── sound
 │   ├── SoundEvent           catalogue of actions (TeamSpeak's own event ids)
 │   ├── SoundPack            a pack folder + its settings.ini mapping
@@ -164,14 +189,18 @@ core/   com.ts3client
     ├── ChannelNode/ClientEntry  view models
     └── ConnectionListener   frontend callbacks
 
-desktop/  com.ts3client.audio.desktop
+desktop/  com.ts3client.audio.desktop + com.ts3client.hotkey.desktop
 ├── Opus                     Panama (FFM) binding to native libopus
 ├── OpusEncoder/OpusDecoder  thin codec wrappers
 ├── AudioDevices             device enumeration + line opening (48 kHz/16-bit)
 ├── JavaSoundVoiceInput      capture + VAD/PTT gating + Opus encode
 ├── JavaSoundVoiceOutput     per-client Opus decode + playback + mixing
 ├── WavSoundPlayer           sound-pack playback: decode, resample and mix on one line
-└── JavaSoundAudioBackend    wires the above into the core AudioBackend
+├── JavaSoundAudioBackend    wires the above into the core AudioBackend
+└── hotkey.desktop
+    ├── XRecordInputHook     global key/button capture via X11's RECORD extension
+    ├── EvdevInputHook       /dev/input fallback for Wayland sessions
+    └── DesktopInputHooks    picks the backend that suits the session
 
 swing/  com.ts3client
 ├── Main                     entry point (look & feel, settings, backend injection)
@@ -182,6 +211,10 @@ swing/  com.ts3client
     ├── InfoPanel            channel description / client group + details view
     ├── ChatPanel            chat log + input
     ├── SettingsDialog       audio + VAD options with live meter
+    ├── HotkeysPanel         hotkey list (Options → Hotkeys)
+    ├── HotkeyDialog         add/edit one hotkey: action, combination, trigger, scope
+    ├── HotkeyService        bindings + engine + input hook, for the dialogs
+    ├── HotkeyActions        carries a fired hotkey out on the client
     ├── NotificationsPanel   sound pack + per-action sound/important configuration
     ├── IconPackPanel        icon pack chooser + icon viewer (Options → Design)
     ├── ConnectDialog        connect form
@@ -200,6 +233,9 @@ swing/  com.ts3client
   dependency-free and reusable in the core library.
 - Whisper is received/played but not yet **sendable** from the UI.
 - Playback decodes streams as mono; stereo music-bot audio is down-mixed.
-- Push-to-talk is captured via Swing key events, so it only works while the app
+- Hotkey actions TeamSpeak offers but this client does not perform yet (listed but
-  window has focus (no global hotkey).
+  greyed out in the dialog): capture/playback/hotkey profiles and sound packs,
+  whisper and push-to-whisper, recording, plugins, server groups, talk power, 3D
+  sound, hardware ("local") microphone mute and the channel-traversal variants
+  beyond "Switch to Channel".
 - No file transfer, avatars, or server/channel administration UI yet.

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

@@ -75,8 +75,6 @@ public final class Settings {
     public double speechThreshold = 0.5;
     /** Keep voice activation running while in push-to-talk mode. */
     public boolean vadOverPtt = false;
-    /** Push-to-talk key as an AWT virtual-key code; the frontend interprets it. Default: Ctrl (VK_CONTROL). */
-    public int pushToTalkKey = 17;
     /** Opus target bitrate in bits/sec. */
     public int bitrate = 48000;
     /** Opus complexity 0..10. */
@@ -173,7 +171,6 @@ public final class Settings {
         vadThresholdDb = parseD(props.getProperty("vadThresholdDb"), vadThresholdDb);
         speechThreshold = parseD(props.getProperty("speechThreshold"), speechThreshold);
         vadOverPtt = parseB(props.getProperty("vadOverPtt"), vadOverPtt);
-        pushToTalkKey = parseI(props.getProperty("pushToTalkKey"), pushToTalkKey);
         bitrate = parseI(props.getProperty("bitrate"), bitrate);
         complexity = parseI(props.getProperty("complexity"), complexity);
         vbr = parseB(props.getProperty("vbr"), vbr);
@@ -211,7 +208,6 @@ public final class Settings {
         props.setProperty("vadThresholdDb", Double.toString(vadThresholdDb));
         props.setProperty("speechThreshold", Double.toString(speechThreshold));
         props.setProperty("vadOverPtt", Boolean.toString(vadOverPtt));
-        props.setProperty("pushToTalkKey", Integer.toString(pushToTalkKey));
         props.setProperty("bitrate", Integer.toString(bitrate));
         props.setProperty("complexity", Integer.toString(complexity));
         props.setProperty("vbr", Boolean.toString(vbr));

ts3-client/core/src/main/java/com/ts3client/hotkey/GlobalInputHook.java

@@ -0,0 +1,38 @@
+package com.ts3client.hotkey;
+
+/**
+ * A system-wide source of key and mouse-button events: it reports every press and
+ * release on the machine, whether or not the client has focus, and without swallowing
+ * the event on its way to the focused application.
+ *
+ * <p>Implementations are platform code and live outside the core; the core only ever
+ * sees this interface.
+ */
+public interface GlobalInputHook extends AutoCloseable {
+
+    interface Listener {
+        /**
+         * @param key     the key or button
+         * @param pressed {@code true} for a press, {@code false} for a release
+         */
+        void onInput(HotkeyKey key, boolean pressed);
+    }
+
+    /** Starts delivering events on a background thread. */
+    void start(Listener listener);
+
+    /** Whether events are actually being delivered; false when the platform refused. */
+    boolean isRunning();
+
+    /** Why the hook is not running, for the options dialog to show; empty when it is. */
+    String unavailableReason();
+
+    /**
+     * The name this system's layout gives a key, or {@code null} to let the caller fall
+     * back to {@link HotkeyKey#fallbackName()}.
+     */
+    String keyName(HotkeyKey key);
+
+    @Override
+    void close();
+}

ts3-client/core/src/main/java/com/ts3client/hotkey/Hotkey.java

@@ -0,0 +1,74 @@
+package com.ts3client.hotkey;
+
+/**
+ * A single binding: which combination triggers which action, on which edge of the
+ * keypress, and whether it reaches only the active server or every connected one.
+ */
+public final class Hotkey {
+
+    /** Which edge of the key press runs the action, as TS3's hotkey mode combo box offers. */
+    public enum Trigger {
+        /** Action triggers when the key is pressed down. */
+        KEY_DOWN("On key down"),
+        /** Action triggers when the key is released. */
+        KEY_UP("On key up");
+
+        private final String label;
+
+        Trigger(String label) {
+            this.label = label;
+        }
+
+        public String label() {
+            return label;
+        }
+    }
+
+    public HotkeyAction action;
+    public HotkeyCombo combo;
+    public Trigger trigger = Trigger.KEY_DOWN;
+    /** Apply to the active server only; when false the action reaches every connection. */
+    public boolean activeServerOnly = true;
+    /** Meaning depends on {@link HotkeyAction#argument()}; empty when the action takes none. */
+    public String argument = "";
+    public boolean enabled = true;
+
+    public Hotkey() {
+    }
+
+    public Hotkey(HotkeyAction action, HotkeyCombo combo) {
+        this.action = action;
+        this.combo = combo;
+    }
+
+    /**
+     * The binding's place in the action tree, as TS3 spells it out:
+     * {@code Sounds / Activate Soundpack / Default Sound Pack (Male)}.
+     */
+    public String path() {
+        if (action == null) return "";
+        StringBuilder sb = new StringBuilder();
+        if (!action.group().isEmpty()) sb.append(action.group()).append(" / ");
+        sb.append(action.label());
+        if (argument != null && !argument.isBlank()) sb.append(" / ").append(argument.trim());
+        return sb.toString();
+    }
+
+    public boolean isValid() {
+        return action != null && combo != null && !combo.isEmpty();
+    }
+
+    /** Whether the action is a per-server one, for which {@link #activeServerOnly} matters. */
+    public boolean isServerScoped() {
+        return action != null && action.category() != HotkeyAction.Category.MISC;
+    }
+
+    public Hotkey copy() {
+        Hotkey h = new Hotkey(action, combo);
+        h.trigger = trigger;
+        h.activeServerOnly = activeServerOnly;
+        h.argument = argument;
+        h.enabled = enabled;
+        return h;
+    }
+}

ts3-client/core/src/main/java/com/ts3client/hotkey/HotkeyAction.java

@@ -0,0 +1,363 @@
+package com.ts3client.hotkey;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * The catalogue of hotkey actions, reverse-engineered from the official TeamSpeak 3
+ * client (its hotkey dialog builds exactly this list, in this order).
+ *
+ * <p>Every entry keeps the identifiers TS3 itself uses — a numeric action type and a
+ * parameter keyword — so bindings stay recognisable and could be imported from, or
+ * exported to, the original client. {@link #supported()} tells whether this client
+ * can actually carry the action out; the rest are listed but greyed out.
+ *
+ * <p>{@link #advanced()} mirrors the dialog's "Show Advanced Actions" checkbox: TS3
+ * hides all but a handful of everyday actions until it is ticked.
+ */
+public enum HotkeyAction {
+
+    // ----- Server -----
+    CONNECT_CURRENT_TAB(Category.SERVER, 0x0010, "Server (current tab)",
+            "Connect to Server on Current Tab", false, Argument.BOOKMARK, true),
+    CONNECT_NEW_TAB(Category.SERVER, 0x0010, "Server (new tab)",
+            "Connect to Server in a New Tab", false, Argument.BOOKMARK, true),
+    DISCONNECT_CURRENT(Category.SERVER, 0x0020, "Current Server",
+            "Disconnect from Current Server", false, Argument.NONE, true),
+    DISCONNECT_ALL(Category.SERVER, 0x0020, "All Servers",
+            "Disconnect from All Servers", false, Argument.NONE, true),
+
+    MIC_ACTIVATE(Category.SERVER, 0x0030, "Activate",
+            "Activate Microphone (current tab)", true, Argument.NONE, true),
+    MIC_MUTE(Category.SERVER, 0x0030, "Mute",
+            "Mute Microphone", true, Argument.NONE, true),
+    MIC_UNMUTE(Category.SERVER, 0x0030, "Unmute",
+            "Unmute Microphone", true, Argument.NONE, true),
+    MIC_TOGGLE(Category.SERVER, 0x0030, "Toggle",
+            "Toggle Microphone Mute", false, Argument.NONE, true),
+    /** TS3's "local" mute is the hardware-level mute of the capture device itself. */
+    MIC_LOCAL_UNMUTE(Category.SERVER, 0x0030, "ActivateLocalMute",
+            "Disable Local Mic Mute", true, Argument.NONE, false),
+    MIC_LOCAL_MUTE(Category.SERVER, 0x0030, "DeactivateLocalMute",
+            "Enable Local Mic Mute", true, Argument.NONE, false),
+    MIC_LOCAL_TOGGLE(Category.SERVER, 0x0030, "ToggleLocalMute",
+            "Toggle Local Mic Mute", true, Argument.NONE, false),
+
+    SPEAKER_MUTE(Category.SERVER, 0x0040, "Mute",
+            "Mute Speaker", true, Argument.NONE, true),
+    SPEAKER_UNMUTE(Category.SERVER, 0x0040, "Unmute",
+            "Unmute Speaker", true, Argument.NONE, true),
+    SPEAKER_TOGGLE(Category.SERVER, 0x0040, "Toggle",
+            "Toggle Speaker Mute", false, Argument.NONE, true),
+
+    AWAY_SET(Category.SERVER, 0x0050, "SetAway",
+            "Set Away", true, Argument.NONE, true),
+    AWAY_ONLINE(Category.SERVER, 0x0050, "SetOnline",
+            "Set Online", true, Argument.NONE, true),
+    AWAY_TOGGLE(Category.SERVER, 0x0050, "Toggle",
+            "Toggle Away Status", false, Argument.NONE, true),
+    AWAY_TOGGLE_WITH_MESSAGE(Category.SERVER, 0x0050, "Toggle With Message",
+            "Toggle Away Status with Message", true, Argument.TEXT, true),
+
+    COMMANDER_ACTIVATE(Category.SERVER, 0x0100, "Activate",
+            "Activate Channel Commander", true, Argument.NONE, true),
+    COMMANDER_DEACTIVATE(Category.SERVER, 0x0100, "Deactivate",
+            "Deactivate Channel Commander", true, Argument.NONE, true),
+    COMMANDER_TOGGLE(Category.SERVER, 0x0100, "Toggle",
+            "Toggle Channel Commander", true, Argument.NONE, true),
+
+    // ----- Self -----
+    CAPTURE_PROFILE_ACTIVATE(Category.SELF, 0x0110, "Activate",
+            "Activate Capture Profile", true, Argument.PROFILE, false),
+    CAPTURE_PROFILE_DEACTIVATE(Category.SELF, 0x0110, "Deactivate",
+            "Deactivate Capture Profile", true, Argument.PROFILE, false),
+    CAPTURE_PROFILE_TOGGLE(Category.SELF, 0x0110, "Toggle",
+            "Toggle Capture Profile", true, Argument.PROFILE, false),
+    PLAYBACK_PROFILE_ACTIVATE(Category.SELF, 0x0120, "Activate",
+            "Activate Playback Profile", true, Argument.PROFILE, false),
+    PLAYBACK_PROFILE_DEACTIVATE(Category.SELF, 0x0120, "Deactivate",
+            "Deactivate Playback Profile", true, Argument.PROFILE, false),
+    PLAYBACK_PROFILE_TOGGLE(Category.SELF, 0x0120, "Toggle",
+            "Toggle Playback Profile", true, Argument.PROFILE, false),
+    HOTKEY_PROFILE_ACTIVATE(Category.SELF, 0x0130, "Activate",
+            "Activate Hotkey Profile", true, Argument.PROFILE, false),
+    HOTKEY_PROFILE_DEACTIVATE(Category.SELF, 0x0130, "Deactivate",
+            "Deactivate Hotkey Profile", true, Argument.PROFILE, false),
+
+    PTT_ACTIVATE(Category.SELF, 0x0140, "Activate",
+            "Activate Push-to-Talk", false, Argument.NONE, true, true),
+    PTT_DEACTIVATE(Category.SELF, 0x0140, "Deactivate",
+            "Deactivate Push-to-Talk", true, Argument.NONE, true),
+    PTT_TOGGLE(Category.SELF, 0x0140, "Toggle",
+            "Toggle Push-to-Talk", true, Argument.NONE, true),
+
+    CHANNEL_SWITCH(Category.SELF, 0x0150, "Strict Channel",
+            "Switch to Channel", true, Argument.CHANNEL, true),
+    CHANNEL_NEXT(Category.SELF, 0x0150, "Next Channel",
+            "Switch to Next Channel (Global)", true, Argument.NONE, false),
+    CHANNEL_PREVIOUS(Category.SELF, 0x0150, "Previous Channel",
+            "Switch to Previous Channel (Global)", true, Argument.NONE, false),
+    CHANNEL_LAST_VISITED(Category.SELF, 0x0150, "Last Visited Channel",
+            "Switch to Last Visited Channel", true, Argument.NONE, false),
+    CHANNEL_NEXT_FAMILY(Category.SELF, 0x0150, "Next Channel Family",
+            "Switch to Next Channel (Channel Family)", true, Argument.NONE, false),
+    CHANNEL_PREVIOUS_FAMILY(Category.SELF, 0x0150, "Previous Channel Family",
+            "Switch to Previous Channel (Channel Family)", true, Argument.NONE, false),
+    CHANNEL_NEXT_LEVEL(Category.SELF, 0x0150, "Next Channel Level",
+            "Switch to Next Channel (Same Level)", true, Argument.NONE, false),
+    CHANNEL_PREVIOUS_LEVEL(Category.SELF, 0x0150, "Previous Channel Level",
+            "Switch to Previous Channel (Same Level)", true, Argument.NONE, false),
+
+    SERVER_TAB_SELECT(Category.SELF, 0x0160, "Strict Server",
+            "Select Server Tab", true, Argument.TEXT, true),
+    SERVER_TAB_NEXT(Category.SELF, 0x0160, "Next Server",
+            "Select Next Server Tab", true, Argument.NONE, true),
+    SERVER_TAB_PREVIOUS(Category.SELF, 0x0160, "Previous Server",
+            "Select Previous Server Tab", true, Argument.NONE, true),
+
+    SOUNDPACK_ACTIVATE(Category.SELF, 0x0170, "Activate",
+            "Activate Soundpack", true, Argument.PROFILE, false),
+    SOUND_MUTE(Category.SELF, 0x0170, "Mute",
+            "Mute Sounds", true, Argument.NONE, true),
+    SOUND_UNMUTE(Category.SELF, 0x0170, "Unmute",
+            "Unmute Sounds", true, Argument.NONE, true),
+    SOUND_TOGGLE(Category.SELF, 0x0170, "Toggle",
+            "Toggle Sound Mute", true, Argument.NONE, true),
+
+    WHISPER_PUSH_ACTIVATE(Category.SELF, 0x0180, "ActivatePushToWhisper",
+            "Activate Push-To-Whisper", true, Argument.TEXT, false, true),
+    WHISPER_PUSH_DEACTIVATE(Category.SELF, 0x0180, "DeactivatePushToWhisper",
+            "Deactivate Push-To-Whisper", true, Argument.TEXT, false),
+    WHISPER_REPLY_PUSH_ACTIVATE(Category.SELF, 0x0180, "ActivateReplyPushToWhisper",
+            "Activate Push-To-Reply to a Whisper", true, Argument.NONE, false, true),
+    WHISPER_REPLY_PUSH_DEACTIVATE(Category.SELF, 0x0180, "DeactivateReplyPushToWhisper",
+            "Deactivate Push-To-Reply to a Whisper", true, Argument.NONE, false),
+    WHISPERLIST_ACTIVATE(Category.SELF, 0x0180, "Activate",
+            "Activate Whisperlist", true, Argument.TEXT, false),
+    WHISPERLIST_DEACTIVATE(Category.SELF, 0x0180, "Deactivate",
+            "Deactivate Whisperlist", true, Argument.TEXT, false),
+    WHISPER_REPLY_ACTIVATE(Category.SELF, 0x0180, "ActivateReply",
+            "Activate Reply to a Whisper", true, Argument.NONE, false),
+    WHISPER_REPLY_DEACTIVATE(Category.SELF, 0x0180, "DeactivateReply",
+            "Deactivate Reply to a Whisper", true, Argument.NONE, false),
+    WHISPER_BLOCK_ACTIVATE(Category.SELF, 0x0180, "ActivateBlock",
+            "Activate Block Incoming Whispers", true, Argument.NONE, false),
+    WHISPER_BLOCK_DEACTIVATE(Category.SELF, 0x0180, "DeactivateBlock",
+            "Deactivate Block Incoming Whispers", true, Argument.NONE, false),
+    WHISPER_BLOCK_TOGGLE(Category.SELF, 0x0180, "ToggleBlock",
+            "Toggle Block Incoming Whispers", true, Argument.NONE, false),
+
+    RECORDING_START(Category.SELF, 0x01c0, "Activate",
+            "Start Recording", true, Argument.NONE, false),
+    RECORDING_START_MULTITRACK(Category.SELF, 0x01c0, "ActivateMT",
+            "Start Multitrack Recording", true, Argument.NONE, false),
+    RECORDING_STOP(Category.SELF, 0x01c0, "Deactivate",
+            "Stop Recording", true, Argument.NONE, false),
+
+    VOLUME_INCREASE(Category.SELF, 0x01e0, "Increase",
+            "Increase Master Volume", true, Argument.NONE, true),
+    VOLUME_DECREASE(Category.SELF, 0x01e0, "Decrease",
+            "Decrease Master Volume", true, Argument.NONE, true),
+
+    PLUGIN_ACTIVATE(Category.SELF, 0x01f0, "Activate",
+            "Activate Plugin", true, Argument.TEXT, false),
+    PLUGIN_DEACTIVATE(Category.SELF, 0x01f0, "Deactivate",
+            "Deactivate Plugin", true, Argument.TEXT, false),
+    PLUGIN_TOGGLE(Category.SELF, 0x01f0, "Toggle",
+            "Toggle Plugin", true, Argument.TEXT, false),
+    PLUGIN_COMMAND(Category.SELF, 0x01f0, "Run",
+            "Run Plugin Command", true, Argument.TEXT, false),
+    PLUGIN_HOTKEY(Category.SELF, 0x01f0, "Hotkey",
+            "Plugin Hotkey", true, Argument.TEXT, false),
+
+    SERVER_GROUP_ASSIGN(Category.SELF, 0x0270, "AssignSG",
+            "Assign Server Group", true, Argument.TEXT, false),
+    SERVER_GROUP_REVOKE(Category.SELF, 0x0270, "RevokeSG",
+            "Revoke Server Group", true, Argument.TEXT, false),
+    SERVER_GROUP_TOGGLE(Category.SELF, 0x0270, "ToggleSG",
+            "Toggle Server Group", true, Argument.TEXT, false),
+
+    STYLESHEET_HELPER_ON(Category.SELF, 0x0240, "Activate",
+            "Stylesheet Helper (on)", true, Argument.NONE, false),
+    STYLESHEET_HELPER_OFF(Category.SELF, 0x0240, "Deactivate",
+            "Stylesheet Helper (off)", true, Argument.NONE, false),
+
+    SOUND_3D_ACTIVATE(Category.SELF, 0x0250, "Activate",
+            "Activate 3D Sound", true, Argument.NONE, false),
+    SOUND_3D_DEACTIVATE(Category.SELF, 0x0250, "Deactivate",
+            "Deactivate 3D Sound", true, Argument.NONE, false),
+    SOUND_3D_TOGGLE(Category.SELF, 0x0250, "Toggle",
+            "Toggle 3D Sound", true, Argument.NONE, false),
+
+    NICKNAME_CHANGE(Category.SELF, 0x01a0, "Rename",
+            "Change Nickname", true, Argument.TEXT, true),
+
+    // ----- Misc -----
+    TALK_POWER_GRANT_NEXT(Category.MISC, 0x01b0, "GrantNextTalkPower",
+            "Grant Next User Talk Power", true, Argument.NONE, false),
+    TALK_POWER_REQUEST(Category.MISC, 0x01b0, "RequestTalkPower",
+            "Request Talk Power", true, Argument.NONE, false),
+    TALK_POWER_REVOKE_ALL_GRANT_NEXT(Category.MISC, 0x01b0, "RevokeAllAndGrantNext",
+            "Revoke All And Grant Next User Talk Power", true, Argument.NONE, false),
+
+    FILEBROWSER(Category.MISC, 0x01d0, "Filebrowser",
+            "Open Filebrowser on Channel", true, Argument.NONE, true),
+    AUTOCONNECT_DISABLE(Category.MISC, 0x0200, "Autoconnect",
+            "Disable Autoconnect", true, Argument.NONE, false),
+    SKIN_RELOAD(Category.MISC, 0x0210, "SkinReload",
+            "Reload Skin", true, Argument.NONE, true),
+    BRING_TO_FRONT(Category.MISC, 0x0220, "Bring2Front",
+            "Bring Client to Front", true, Argument.NONE, true),
+    SEND_TO_BACK(Category.MISC, 0x0230, "Send2Back",
+            "Send Client to Background", true, Argument.NONE, true);
+
+    /** The three groups the TS3 hotkey dialog separates its list into. */
+    public enum Category {
+        SERVER("Server"),
+        SELF("Self"),
+        MISC("Misc");
+
+        private final String label;
+
+        Category(String label) {
+            this.label = label;
+        }
+
+        public String label() {
+            return label;
+        }
+    }
+
+    /**
+     * The group an action's type belongs to in TeamSpeak's hotkey tree, taken from the
+     * table its dialog builds. Types absent here are ungrouped: TS3 shows them as a
+     * single item directly under their category.
+     */
+    private static final Map<Integer, String> GROUPS = Map.ofEntries(
+            Map.entry(0x0010, "Connect to Server"),
+            Map.entry(0x0020, "Disconnect from Server"),
+            Map.entry(0x0030, "Microphone"),
+            Map.entry(0x0040, "Speaker"),
+            Map.entry(0x0050, "Away Status"),
+            Map.entry(0x0100, "Channel Commander"),
+            Map.entry(0x0110, "Capture Profile"),
+            Map.entry(0x0120, "Playback Profile"),
+            Map.entry(0x0130, "Hotkey Profile"),
+            Map.entry(0x0140, "Push-to-Talk"),
+            Map.entry(0x0150, "Switch to Channel"),
+            Map.entry(0x0160, "Select Server Tab"),
+            Map.entry(0x0170, "Sounds"),
+            Map.entry(0x0180, "Whisper"),
+            Map.entry(0x01b0, "Talk Power"),
+            Map.entry(0x01c0, "Recording"),
+            Map.entry(0x01e0, "Master Volume"),
+            Map.entry(0x01f0, "Plugins"),
+            Map.entry(0x0250, "3D Sound"),
+            Map.entry(0x0270, "Permissions"));
+
+    /** What the action's free-text parameter means, when it takes one. */
+    public enum Argument {
+        NONE,
+        /** Label of a bookmark to connect to. */
+        BOOKMARK,
+        /** Channel path, "/"-separated. */
+        CHANNEL,
+        /** Name of a capture/playback/hotkey profile or sound pack. */
+        PROFILE,
+        /** Anything else: nickname, away message, tab number, plugin command. */
+        TEXT
+    }
+
+    private final Category category;
+    private final int type;
+    private final String parameter;
+    private final String label;
+    private final boolean advanced;
+    private final Argument argument;
+    private final boolean supported;
+    private final boolean momentary;
+
+    HotkeyAction(Category category, int type, String parameter, String label,
+                 boolean advanced, Argument argument, boolean supported) {
+        this(category, type, parameter, label, advanced, argument, supported, false);
+    }
+
+    HotkeyAction(Category category, int type, String parameter, String label,
+                 boolean advanced, Argument argument, boolean supported, boolean momentary) {
+        this.category = category;
+        this.type = type;
+        this.parameter = parameter;
+        this.label = label;
+        this.advanced = advanced;
+        this.argument = argument;
+        this.supported = supported;
+        this.momentary = momentary;
+    }
+
+    public Category category() {
+        return category;
+    }
+
+    /** TS3's numeric action type; actions sharing one differ only by {@link #parameter()}. */
+    public int type() {
+        return type;
+    }
+
+    /**
+     * The node this action hangs under in the hotkey tree ("Sounds", "Microphone", …),
+     * or an empty string for the actions TS3 lists on their own.
+     */
+    public String group() {
+        return GROUPS.getOrDefault(type, "");
+    }
+
+    /** TS3's parameter keyword, e.g. {@code Toggle} or {@code ActivateReply}. */
+    public String parameter() {
+        return parameter;
+    }
+
+    /** The name shown in the hotkey list. */
+    public String label() {
+        return label;
+    }
+
+    /** Hidden until "Show advanced actions" is ticked, as in TS3. */
+    public boolean advanced() {
+        return advanced;
+    }
+
+    public Argument argument() {
+        return argument;
+    }
+
+    /** Whether this client implements the action; unsupported ones cannot be bound. */
+    public boolean supported() {
+        return supported;
+    }
+
+    /**
+     * Whether the action lasts only while the hotkey is held (push-to-talk and the
+     * push-to-whisper variants), in which case the trigger setting does not apply and
+     * the release is reported as well.
+     */
+    public boolean momentary() {
+        return momentary;
+    }
+
+    public static List<HotkeyAction> of(Category category, boolean includeAdvanced) {
+        List<HotkeyAction> out = new ArrayList<>();
+        for (HotkeyAction a : values()) {
+            if (a.category == category && (includeAdvanced || !a.advanced)) out.add(a);
+        }
+        return out;
+    }
+
+    /** Looks an action up by its enum name, falling back to {@code null}. */
+    public static HotkeyAction byName(String name) {
+        for (HotkeyAction a : values()) {
+            if (a.name().equals(name)) return a;
+        }
+        return null;
+    }
+}

ts3-client/core/src/main/java/com/ts3client/hotkey/HotkeyCombo.java

@@ -0,0 +1,94 @@
+package com.ts3client.hotkey;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+import java.util.Set;
+import java.util.function.Function;
+
+/**
+ * A key combination: one key or button, or several that have to be held together.
+ * There is no distinguished modifier — as in TS3, any key can take that role, and the
+ * combination fires once every one of its keys is down.
+ */
+public final class HotkeyCombo {
+
+    /** Recording order, which is also the order the combination is displayed in. */
+    private final List<HotkeyKey> keys;
+
+    public HotkeyCombo(Collection<HotkeyKey> keys) {
+        List<HotkeyKey> copy = new ArrayList<>();
+        for (HotkeyKey k : keys) {
+            if (k != null && !copy.contains(k)) copy.add(k);
+        }
+        this.keys = Collections.unmodifiableList(copy);
+    }
+
+    public List<HotkeyKey> keys() {
+        return keys;
+    }
+
+    public boolean isEmpty() {
+        return keys.isEmpty();
+    }
+
+    public boolean contains(HotkeyKey key) {
+        return keys.contains(key);
+    }
+
+    /** Whether every key of the combination is currently held down. */
+    public boolean isSatisfiedBy(Set<HotkeyKey> pressed) {
+        return !keys.isEmpty() && pressed.containsAll(keys);
+    }
+
+    /** Serialised form, e.g. {@code Keyboard:37+Keyboard:45}. */
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        for (HotkeyKey k : keys) {
+            if (sb.length() > 0) sb.append('+');
+            sb.append(k);
+        }
+        return sb.toString();
+    }
+
+    public static HotkeyCombo parse(String text) {
+        List<HotkeyKey> keys = new ArrayList<>();
+        if (text != null && !text.isBlank()) {
+            for (String part : text.split("\\+")) {
+                HotkeyKey k = HotkeyKey.parse(part);
+                if (k != null) keys.add(k);
+            }
+        }
+        return new HotkeyCombo(keys);
+    }
+
+    /**
+     * Renders the combination for the user, e.g. {@code Ctrl+Mouse 4}.
+     *
+     * @param namer resolves a key to its name on this system, typically from the
+     *              keyboard layout; may return {@code null} to fall back
+     */
+    public String display(Function<HotkeyKey, String> namer) {
+        if (keys.isEmpty()) return "No hotkey assigned";
+        StringBuilder sb = new StringBuilder();
+        for (HotkeyKey k : keys) {
+            String name = namer == null ? null : namer.apply(k);
+            if (name == null || name.isBlank()) name = k.fallbackName();
+            if (sb.length() > 0) sb.append(" + ");
+            sb.append(name);
+        }
+        return sb.toString();
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        return o instanceof HotkeyCombo other && keys.equals(other.keys);
+    }
+
+    @Override
+    public int hashCode() {
+        return keys.hashCode();
+    }
+}

ts3-client/core/src/main/java/com/ts3client/hotkey/HotkeyEngine.java

@@ -0,0 +1,154 @@
+package com.ts3client.hotkey;
+
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.LinkedHashSet;
+import java.util.List;
+import java.util.Set;
+
+/**
+ * Turns the raw stream of global key events into hotkey activations: it tracks which
+ * keys are down, decides when a binding's combination becomes (or stops being)
+ * satisfied, and reports that on the configured edge.
+ *
+ * <p>While a {@link Recorder} is installed the engine records combinations instead of
+ * firing them, which is how the hotkey dialog captures a new binding without the old
+ * ones going off.
+ */
+public final class HotkeyEngine implements GlobalInputHook.Listener {
+
+    /** Receives activations; called on the input hook's thread. */
+    public interface Handler {
+        /**
+         * @param hotkey the binding that fired
+         * @param active {@code true} on activation; a {@code false} call follows on release
+         *               for {@link HotkeyAction#momentary()} actions only
+         */
+        void onHotkey(Hotkey hotkey, boolean active);
+    }
+
+    /** Collects a combination as the user presses it, for the "set hotkey" button. */
+    public interface Recorder {
+        /** The keys held so far, in press order; called on every change. */
+        void onRecording(HotkeyCombo combo);
+
+        /** The user let go of everything: this is the final combination. */
+        void onRecorded(HotkeyCombo combo);
+    }
+
+    private final Hotkeys hotkeys;
+    private final Handler handler;
+
+    private final Set<HotkeyKey> pressed = new LinkedHashSet<>();
+    /** Bindings whose combination is currently held, so a release can end them. */
+    private final Set<Hotkey> active = new HashSet<>();
+
+    private volatile Recorder recorder;
+    private final Set<HotkeyKey> recording = new LinkedHashSet<>();
+
+    public HotkeyEngine(Hotkeys hotkeys, Handler handler) {
+        this.hotkeys = hotkeys;
+        this.handler = handler;
+    }
+
+    /**
+     * Diverts every event into {@code recorder} until {@link #stopRecording()}; the
+     * bindings themselves stay silent meanwhile.
+     */
+    public void record(Recorder recorder) {
+        synchronized (this) {
+            recording.clear();
+            releaseActive();
+            pressed.clear();
+        }
+        this.recorder = recorder;
+    }
+
+    public void stopRecording() {
+        recorder = null;
+        synchronized (this) {
+            recording.clear();
+            pressed.clear();
+        }
+    }
+
+    @Override
+    public void onInput(HotkeyKey key, boolean down) {
+        Recorder rec = recorder;
+        if (rec != null) {
+            recordKey(rec, key, down);
+            return;
+        }
+
+        List<Runnable> fired = new ArrayList<>();
+        synchronized (this) {
+            if (down) {
+                if (!pressed.add(key)) return;
+            } else if (!pressed.remove(key)) {
+                return;
+            }
+
+            synchronized (hotkeys.all()) {
+                for (Hotkey h : hotkeys.all()) {
+                    if (!h.enabled || !h.isValid() || !h.action.supported()) continue;
+                    if (!h.combo.contains(key)) continue;
+
+                    boolean satisfied = h.combo.isSatisfiedBy(pressed);
+                    if (satisfied && active.add(h)) {
+                        if (h.action.momentary() || h.trigger == Hotkey.Trigger.KEY_DOWN) {
+                            fired.add(() -> handler.onHotkey(h, true));
+                        }
+                    } else if (!satisfied && active.remove(h)) {
+                        if (h.action.momentary()) {
+                            fired.add(() -> handler.onHotkey(h, false));
+                        } else if (h.trigger == Hotkey.Trigger.KEY_UP) {
+                            fired.add(() -> handler.onHotkey(h, true));
+                        }
+                    }
+                }
+            }
+        }
+        for (Runnable r : fired) r.run();
+    }
+
+    private void recordKey(Recorder rec, HotkeyKey key, boolean down) {
+        HotkeyCombo combo;
+        boolean finished;
+        synchronized (this) {
+            if (down) {
+                recording.add(key);
+                pressed.add(key);
+            } else {
+                pressed.remove(key);
+            }
+            combo = new HotkeyCombo(recording);
+            finished = !down && pressed.isEmpty() && !recording.isEmpty();
+            if (finished) recording.clear();
+        }
+        if (finished) {
+            rec.onRecorded(combo);
+        } else {
+            rec.onRecording(combo);
+        }
+    }
+
+    /** Ends every held binding, so nothing stays stuck when the hook stops. */
+    public void releaseAll() {
+        List<Runnable> fired = new ArrayList<>();
+        synchronized (this) {
+            for (Hotkey h : active) {
+                if (h.action.momentary()) fired.add(() -> handler.onHotkey(h, false));
+            }
+            active.clear();
+            pressed.clear();
+        }
+        for (Runnable r : fired) r.run();
+    }
+
+    private void releaseActive() {
+        for (Hotkey h : new ArrayList<>(active)) {
+            if (h.action.momentary()) handler.onHotkey(h, false);
+        }
+        active.clear();
+    }
+}

ts3-client/core/src/main/java/com/ts3client/hotkey/HotkeyKey.java

@@ -0,0 +1,81 @@
+package com.ts3client.hotkey;
+
+/**
+ * One physical key or mouse button, identified the way the X server numbers them:
+ * keyboards by keycode (Linux evdev code + 8) and mice by button number, so a binding
+ * is independent of the keyboard layout in force when it was recorded.
+ *
+ * @param device which input device the code belongs to
+ * @param code   X keycode for {@link Device#KEYBOARD}, X button number for {@link Device#MOUSE}
+ */
+public record HotkeyKey(HotkeyKey.Device device, int code) {
+
+    public enum Device {
+        KEYBOARD("Keyboard"),
+        MOUSE("Mouse");
+
+        private final String prefix;
+
+        Device(String prefix) {
+            this.prefix = prefix;
+        }
+
+        String prefix() {
+            return prefix;
+        }
+    }
+
+    public static HotkeyKey keyboard(int keycode) {
+        return new HotkeyKey(Device.KEYBOARD, keycode);
+    }
+
+    public static HotkeyKey mouse(int button) {
+        return new HotkeyKey(Device.MOUSE, button);
+    }
+
+    /** Serialised form, matching TS3's {@code Keyboard:9} / {@code Mouse:9} notation. */
+    @Override
+    public String toString() {
+        return device.prefix() + ":" + code;
+    }
+
+    public static HotkeyKey parse(String text) {
+        if (text == null) return null;
+        int colon = text.indexOf(':');
+        if (colon <= 0) return null;
+        String prefix = text.substring(0, colon).trim();
+        int code;
+        try {
+            code = Integer.parseInt(text.substring(colon + 1).trim());
+        } catch (NumberFormatException e) {
+            return null;
+        }
+        for (Device d : Device.values()) {
+            if (d.prefix().equalsIgnoreCase(prefix)) return new HotkeyKey(d, code);
+        }
+        return null;
+    }
+
+    /**
+     * A readable name that needs no help from the platform: mouse buttons carry the
+     * numbering users know them by, keys fall back to their raw code.
+     */
+    public String fallbackName() {
+        if (device == Device.MOUSE) {
+            return switch (code) {
+                case 1 -> "Mouse Left";
+                case 2 -> "Mouse Middle";
+                case 3 -> "Mouse Right";
+                case 4 -> "Wheel Up";
+                case 5 -> "Wheel Down";
+                case 6 -> "Wheel Left";
+                case 7 -> "Wheel Right";
+                // X hands the side buttons out as 8 and 9; everyone else calls them 4 and 5.
+                case 8 -> "Mouse 4";
+                case 9 -> "Mouse 5";
+                default -> "Mouse " + code;
+            };
+        }
+        return "Key " + code;
+    }
+}

ts3-client/core/src/main/java/com/ts3client/hotkey/Hotkeys.java

@@ -0,0 +1,109 @@
+package com.ts3client.hotkey;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.Properties;
+
+/**
+ * The user's hotkey bindings, stored alongside the settings file.
+ * Frontend-agnostic: no UI dependencies.
+ */
+public final class Hotkeys {
+
+    private static final File DIR = new File(System.getProperty("user.home"), ".ts3jclient");
+    private static final File FILE = new File(DIR, "hotkeys.properties");
+
+    private final List<Hotkey> entries = Collections.synchronizedList(new ArrayList<>());
+
+    /** Live view; iterate under {@code synchronized (all())} when the engine may be running. */
+    public List<Hotkey> all() {
+        return entries;
+    }
+
+    public void add(Hotkey hotkey) {
+        entries.add(hotkey);
+    }
+
+    public void set(int index, Hotkey hotkey) {
+        if (index >= 0 && index < entries.size()) entries.set(index, hotkey);
+    }
+
+    public void remove(int index) {
+        if (index >= 0 && index < entries.size()) entries.remove(index);
+    }
+
+    /** Replaces every binding at once, e.g. when the options dialog is applied. */
+    public void replaceAll(List<Hotkey> hotkeys) {
+        synchronized (entries) {
+            entries.clear();
+            for (Hotkey h : hotkeys) {
+                if (h != null && h.isValid()) entries.add(h);
+            }
+        }
+    }
+
+    public static Hotkeys load() {
+        Hotkeys h = new Hotkeys();
+        if (!FILE.isFile()) return h;
+        Properties p = new Properties();
+        try (FileInputStream in = new FileInputStream(FILE)) {
+            p.load(in);
+        } catch (Exception e) {
+            return h;
+        }
+        int count = parseInt(p.getProperty("count"), 0);
+        for (int i = 0; i < count; i++) {
+            String prefix = "hotkey." + i + ".";
+            HotkeyAction action = HotkeyAction.byName(p.getProperty(prefix + "action", ""));
+            if (action == null) continue;
+            Hotkey entry = new Hotkey(action, HotkeyCombo.parse(p.getProperty(prefix + "keys", "")));
+            entry.trigger = "KEY_UP".equals(p.getProperty(prefix + "trigger"))
+                    ? Hotkey.Trigger.KEY_UP : Hotkey.Trigger.KEY_DOWN;
+            entry.activeServerOnly = !"false".equals(p.getProperty(prefix + "activeServerOnly"));
+            entry.argument = p.getProperty(prefix + "argument", "");
+            entry.enabled = !"false".equals(p.getProperty(prefix + "enabled"));
+            if (entry.isValid()) h.entries.add(entry);
+        }
+        return h;
+    }
+
+    public void save() {
+        Properties p = new Properties();
+        synchronized (entries) {
+            p.setProperty("count", Integer.toString(entries.size()));
+            for (int i = 0; i < entries.size(); i++) {
+                Hotkey e = entries.get(i);
+                String prefix = "hotkey." + i + ".";
+                p.setProperty(prefix + "action", e.action.name());
+                p.setProperty(prefix + "keys", e.combo.toString());
+                p.setProperty(prefix + "trigger", e.trigger.name());
+                p.setProperty(prefix + "activeServerOnly", Boolean.toString(e.activeServerOnly));
+                p.setProperty(prefix + "argument", e.argument == null ? "" : e.argument);
+                p.setProperty(prefix + "enabled", Boolean.toString(e.enabled));
+            }
+        }
+        try {
+            if (!DIR.isDirectory()) {
+                //noinspection ResultOfMethodCallIgnored
+                DIR.mkdirs();
+            }
+            try (FileOutputStream out = new FileOutputStream(FILE)) {
+                p.store(out, "TS3J client hotkeys");
+            }
+        } catch (Exception ignored) {
+        }
+    }
+
+    private static int parseInt(String v, int def) {
+        if (v == null) return def;
+        try {
+            return Integer.parseInt(v.trim());
+        } catch (NumberFormatException e) {
+            return def;
+        }
+    }
+}

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

@@ -24,6 +24,7 @@ public final class SoundNotifier {
     private volatile SoundPlayer player;
     private volatile SoundPack pack;
     private volatile List<SoundPack> available = List.of();
+    private volatile boolean soundsMuted;
 
     public SoundNotifier(Settings settings) {
         this.settings = settings;
@@ -55,6 +56,19 @@ public final class SoundNotifier {
         settings.soundPack = pack == null ? "" : pack.id();
     }
 
+    /**
+     * Silences every notification sound until turned back on — TS3's "Mute Sounds"
+     * hotkey action. Unlike deafening, this is not tied to a server and even important
+     * actions stay quiet.
+     */
+    public void setMuted(boolean muted) {
+        this.soundsMuted = muted;
+    }
+
+    public boolean isMuted() {
+        return soundsMuted;
+    }
+
     /**
      * Plays the sound for an action.
      *
@@ -70,6 +84,7 @@ public final class SoundNotifier {
      *                  {@code clientname} or {@code channelname}
      */
     public void fire(SoundEvent event, boolean muted, Map<String, String> variables) {
+        if (soundsMuted) return;
         NotificationSettings notifications = settings.notifications;
         if (!notifications.isEnabled(event)) return;
         if (muted && !notifications.isImportant(event)) return;

ts3-client/core/src/test/java/com/ts3client/hotkey/HotkeyEngineTest.java

@@ -0,0 +1,120 @@
+package com.ts3client.hotkey;
+
+import org.junit.jupiter.api.Test;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+class HotkeyEngineTest {
+
+    private static final HotkeyKey CTRL = HotkeyKey.keyboard(37);
+    private static final HotkeyKey K = HotkeyKey.keyboard(45);
+    private static final HotkeyKey MOUSE4 = HotkeyKey.mouse(8);
+
+    private final List<String> fired = new ArrayList<>();
+    private final Hotkeys hotkeys = new Hotkeys();
+    private final HotkeyEngine engine = new HotkeyEngine(hotkeys,
+            (hotkey, active) -> fired.add(hotkey.action + (active ? ":on" : ":off")));
+
+    private Hotkey bind(HotkeyAction action, Hotkey.Trigger trigger, HotkeyKey... keys) {
+        Hotkey h = new Hotkey(action, new HotkeyCombo(List.of(keys)));
+        h.trigger = trigger;
+        hotkeys.add(h);
+        return h;
+    }
+
+    @Test
+    void firesOnKeyDownOnlyWhenEveryKeyIsHeld() {
+        bind(HotkeyAction.MIC_TOGGLE, Hotkey.Trigger.KEY_DOWN, CTRL, K);
+
+        engine.onInput(K, true);
+        assertTrue(fired.isEmpty(), "one key of the combination is not enough");
+        engine.onInput(CTRL, true);
+        assertEquals(List.of("MIC_TOGGLE:on"), fired);
+
+        // Releasing and re-pressing arms it again, but only once per completion.
+        engine.onInput(CTRL, false);
+        engine.onInput(CTRL, true);
+        assertEquals(List.of("MIC_TOGGLE:on", "MIC_TOGGLE:on"), fired);
+    }
+
+    @Test
+    void keyUpTriggerFiresOnRelease() {
+        bind(HotkeyAction.SPEAKER_TOGGLE, Hotkey.Trigger.KEY_UP, MOUSE4);
+
+        engine.onInput(MOUSE4, true);
+        assertTrue(fired.isEmpty());
+        engine.onInput(MOUSE4, false);
+        assertEquals(List.of("SPEAKER_TOGGLE:on"), fired);
+    }
+
+    @Test
+    void momentaryActionReportsPressAndRelease() {
+        bind(HotkeyAction.PTT_ACTIVATE, Hotkey.Trigger.KEY_UP, MOUSE4);
+
+        engine.onInput(MOUSE4, true);
+        engine.onInput(MOUSE4, false);
+        // The trigger setting does not apply: push-to-talk always spans the hold.
+        assertEquals(List.of("PTT_ACTIVATE:on", "PTT_ACTIVATE:off"), fired);
+    }
+
+    @Test
+    void disabledAndUnsupportedBindingsStaySilent() {
+        bind(HotkeyAction.MIC_TOGGLE, Hotkey.Trigger.KEY_DOWN, K).enabled = false;
+        bind(HotkeyAction.RECORDING_START, Hotkey.Trigger.KEY_DOWN, MOUSE4);
+
+        engine.onInput(K, true);
+        engine.onInput(MOUSE4, true);
+        assertTrue(fired.isEmpty());
+    }
+
+    @Test
+    void recordingCapturesTheCombinationInsteadOfFiring() {
+        bind(HotkeyAction.MIC_TOGGLE, Hotkey.Trigger.KEY_DOWN, K);
+        List<HotkeyCombo> recorded = new ArrayList<>();
+        engine.record(new HotkeyEngine.Recorder() {
+            @Override
+            public void onRecording(HotkeyCombo combo) {
+            }
+
+            @Override
+            public void onRecorded(HotkeyCombo combo) {
+                recorded.add(combo);
+            }
+        });
+
+        engine.onInput(CTRL, true);
+        engine.onInput(K, true);
+        engine.onInput(K, false);
+        engine.onInput(CTRL, false);
+
+        assertTrue(fired.isEmpty(), "bindings must not fire while recording");
+        assertEquals(1, recorded.size());
+        assertEquals(List.of(CTRL, K), recorded.get(0).keys());
+    }
+
+    @Test
+    void actionsCarryTeamSpeaksTreeGrouping() {
+        assertEquals("Sounds", HotkeyAction.SOUNDPACK_ACTIVATE.group());
+        assertEquals("Microphone", HotkeyAction.MIC_TOGGLE.group());
+        // TS3 leaves a handful of actions ungrouped, listed straight under their category.
+        assertEquals("", HotkeyAction.NICKNAME_CHANGE.group());
+        assertEquals("", HotkeyAction.BRING_TO_FRONT.group());
+
+        Hotkey pack = new Hotkey(HotkeyAction.SOUNDPACK_ACTIVATE, new HotkeyCombo(List.of(K)));
+        pack.argument = "Default Sound Pack (Male)";
+        assertEquals("Sounds / Activate Soundpack / Default Sound Pack (Male)", pack.path());
+        assertEquals("Bring Client to Front",
+                new Hotkey(HotkeyAction.BRING_TO_FRONT, new HotkeyCombo(List.of(K))).path());
+    }
+
+    @Test
+    void combinationsSurviveARoundTripThroughText() {
+        HotkeyCombo combo = new HotkeyCombo(List.of(CTRL, MOUSE4));
+        assertEquals("Keyboard:37+Mouse:8", combo.toString());
+        assertEquals(combo, HotkeyCombo.parse(combo.toString()));
+    }
+}

ts3-client/desktop/src/main/java/com/ts3client/hotkey/desktop/DesktopInputHooks.java

@@ -0,0 +1,79 @@
+package com.ts3client.hotkey.desktop;
+
+import com.ts3client.hotkey.GlobalInputHook;
+import com.ts3client.hotkey.HotkeyKey;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Picks the global input hook that suits the running session and starts it.
+ *
+ * <p>On X11, RECORD is the polite choice: no extra privileges, no devices to open. On
+ * Wayland the X server sees only what is aimed at X clients, so reading evdev is the
+ * only way to catch every key — and when that is not permitted either, the returned
+ * hook is simply not running and says why.
+ */
+public final class DesktopInputHooks {
+
+    private DesktopInputHooks() {
+    }
+
+    /** @return a hook, started when it could be; check {@link GlobalInputHook#isRunning()} */
+    public static GlobalInputHook start(GlobalInputHook.Listener listener) {
+        List<String> reasons = new ArrayList<>();
+        for (GlobalInputHook hook : candidates()) {
+            hook.start(listener);
+            if (hook.isRunning()) return hook;
+            reasons.add(hook.getClass().getSimpleName() + ": " + hook.unavailableReason());
+            hook.close();
+        }
+        return new Unavailable(reasons.isEmpty()
+                ? "no global input backend for this session"
+                : String.join("; ", reasons));
+    }
+
+    private static List<GlobalInputHook> candidates() {
+        List<GlobalInputHook> hooks = new ArrayList<>();
+        if (isWayland()) {
+            if (EvdevInputHook.isSupported()) hooks.add(new EvdevInputHook());
+            if (XRecordInputHook.isSupported()) hooks.add(new XRecordInputHook());
+        } else {
+            if (XRecordInputHook.isSupported()) hooks.add(new XRecordInputHook());
+            if (EvdevInputHook.isSupported()) hooks.add(new EvdevInputHook());
+        }
+        return hooks;
+    }
+
+    private static boolean isWayland() {
+        return System.getenv("WAYLAND_DISPLAY") != null
+                || "wayland".equalsIgnoreCase(System.getenv("XDG_SESSION_TYPE"));
+    }
+
+    /** Stands in when no backend could start, so callers need no null checks. */
+    private record Unavailable(String reason) implements GlobalInputHook {
+
+        @Override
+        public void start(Listener listener) {
+        }
+
+        @Override
+        public boolean isRunning() {
+            return false;
+        }
+
+        @Override
+        public String unavailableReason() {
+            return reason;
+        }
+
+        @Override
+        public String keyName(HotkeyKey key) {
+            return X11KeyNamer.name(key);
+        }
+
+        @Override
+        public void close() {
+        }
+    }
+}

ts3-client/desktop/src/main/java/com/ts3client/hotkey/desktop/EvdevInputHook.java

@@ -0,0 +1,151 @@
+package com.ts3client.hotkey.desktop;
+
+import com.ts3client.hotkey.GlobalInputHook;
+import com.ts3client.hotkey.HotkeyKey;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.InputStream;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * System-wide input hook that reads the kernel's evdev devices directly, for sessions
+ * where {@link XRecordInputHook} cannot see everything — Wayland above all, where the X
+ * server is only told about events aimed at X clients.
+ *
+ * <p>It needs read access to {@code /dev/input/event*}, which normally means membership
+ * of the {@code input} group; without it the hook reports itself unavailable and the
+ * client carries on without global hotkeys.
+ *
+ * <p>Key codes are reported as X keycodes (the kernel code plus 8) and buttons as X
+ * button numbers, so bindings mean the same thing whichever backend recorded them.
+ */
+public final class EvdevInputHook implements GlobalInputHook {
+
+    private static final File INPUT_DIR = new File("/dev/input");
+    /** {@code struct input_event} on 64-bit Linux: two 8-byte time fields, then type/code/value. */
+    private static final int EVENT_SIZE = 24;
+    private static final int EV_KEY = 1;
+    /** Kernel key codes below this are keyboard keys; from here up they are BTN_* buttons. */
+    private static final int BTN_MISC = 0x100;
+    private static final int BTN_LEFT = 0x110;
+
+    private final List<InputStream> streams = new ArrayList<>();
+    private final List<Thread> threads = new ArrayList<>();
+    private volatile Listener listener;
+    private volatile boolean running;
+    private volatile String unavailable = "not started";
+
+    public static boolean isSupported() {
+        File[] devices = INPUT_DIR.listFiles((dir, name) -> name.startsWith("event"));
+        if (devices == null) return false;
+        for (File device : devices) {
+            if (device.canRead()) return true;
+        }
+        return false;
+    }
+
+    @Override
+    public void start(Listener listener) {
+        this.listener = listener;
+        File[] devices = INPUT_DIR.listFiles((dir, name) -> name.startsWith("event"));
+        if (devices == null || devices.length == 0) {
+            unavailable = "no /dev/input devices";
+            return;
+        }
+        for (File device : devices) {
+            try {
+                InputStream in = new FileInputStream(device);
+                streams.add(in);
+                Thread t = new Thread(() -> read(in), "ts3j-hotkeys-evdev-" + device.getName());
+                t.setDaemon(true);
+                threads.add(t);
+            } catch (Exception ignored) {
+                // Devices we may not read are simply skipped.
+            }
+        }
+        if (streams.isEmpty()) {
+            unavailable = "no readable /dev/input device — add your user to the \"input\" group";
+            return;
+        }
+        running = true;
+        unavailable = "";
+        for (Thread t : threads) t.start();
+    }
+
+    private void read(InputStream in) {
+        byte[] buffer = new byte[EVENT_SIZE * 16];
+        ByteBuffer view = ByteBuffer.wrap(buffer).order(ByteOrder.nativeOrder());
+        while (running) {
+            try {
+                int read = in.read(buffer);
+                if (read < 0) return;
+                for (int offset = 0; offset + EVENT_SIZE <= read; offset += EVENT_SIZE) {
+                    int type = view.getShort(offset + 16) & 0xffff;
+                    int code = view.getShort(offset + 18) & 0xffff;
+                    int value = view.getInt(offset + 20);
+                    // 2 is auto-repeat, which must not look like a fresh press.
+                    if (type == EV_KEY && value != 2) dispatch(code, value == 1);
+                }
+            } catch (Exception e) {
+                return;
+            }
+        }
+    }
+
+    private void dispatch(int code, boolean pressed) {
+        Listener l = listener;
+        if (l == null) return;
+        HotkeyKey key = code < BTN_MISC ? HotkeyKey.keyboard(code + 8) : mouse(code);
+        if (key != null) l.onInput(key, pressed);
+    }
+
+    /** Maps the kernel's BTN_* codes onto the X button numbering. */
+    private static HotkeyKey mouse(int code) {
+        return switch (code) {
+            case BTN_LEFT -> HotkeyKey.mouse(1);
+            case BTN_LEFT + 1 -> HotkeyKey.mouse(3);      // BTN_RIGHT
+            case BTN_LEFT + 2 -> HotkeyKey.mouse(2);      // BTN_MIDDLE
+            case BTN_LEFT + 3 -> HotkeyKey.mouse(8);      // BTN_SIDE, "mouse 4"
+            case BTN_LEFT + 4 -> HotkeyKey.mouse(9);      // BTN_EXTRA, "mouse 5"
+            case BTN_LEFT + 5 -> HotkeyKey.mouse(10);     // BTN_FORWARD
+            case BTN_LEFT + 6 -> HotkeyKey.mouse(11);     // BTN_BACK
+            case BTN_LEFT + 7 -> HotkeyKey.mouse(12);     // BTN_TASK
+            default -> null;                              // joysticks, lid switches, …
+        };
+    }
+
+    @Override
+    public boolean isRunning() {
+        return running;
+    }
+
+    @Override
+    public String unavailableReason() {
+        return running ? "" : unavailable;
+    }
+
+    @Override
+    public String keyName(HotkeyKey key) {
+        // The kernel knows scancodes, not layouts; let X name the key when it can.
+        return X11KeyNamer.name(key);
+    }
+
+    @Override
+    public void close() {
+        running = false;
+        listener = null;
+        // Closing the descriptor is what breaks the readers out of their blocking read.
+        for (InputStream in : streams) {
+            try {
+                in.close();
+            } catch (Exception ignored) {
+            }
+        }
+        streams.clear();
+        threads.clear();
+    }
+}

ts3-client/desktop/src/main/java/com/ts3client/hotkey/desktop/KeyNames.java

@@ -0,0 +1,47 @@
+package com.ts3client.hotkey.desktop;
+
+import java.util.Map;
+
+/** Turns X keysym names into the labels users expect on a hotkey button. */
+final class KeyNames {
+
+    private KeyNames() {
+    }
+
+    private static final Map<String, String> SPECIAL = Map.ofEntries(
+            Map.entry("Control_L", "Left Ctrl"),
+            Map.entry("Control_R", "Right Ctrl"),
+            Map.entry("Shift_L", "Left Shift"),
+            Map.entry("Shift_R", "Right Shift"),
+            Map.entry("Alt_L", "Left Alt"),
+            Map.entry("Alt_R", "Right Alt"),
+            Map.entry("ISO_Level3_Shift", "AltGr"),
+            Map.entry("Super_L", "Left Super"),
+            Map.entry("Super_R", "Right Super"),
+            Map.entry("Meta_L", "Left Meta"),
+            Map.entry("Meta_R", "Right Meta"),
+            Map.entry("Prior", "Page Up"),
+            Map.entry("Next", "Page Down"),
+            Map.entry("Return", "Enter"),
+            Map.entry("space", "Space"),
+            Map.entry("BackSpace", "Backspace"),
+            Map.entry("Escape", "Esc"),
+            Map.entry("Caps_Lock", "Caps Lock"),
+            Map.entry("Num_Lock", "Num Lock"),
+            Map.entry("Scroll_Lock", "Scroll Lock"),
+            Map.entry("Menu", "Menu"),
+            Map.entry("Print", "Print Screen"));
+
+    /**
+     * @param keysym the X name of the keysym, e.g. {@code a}, {@code Control_L}, {@code KP_Add}
+     * @return a display name, or {@code null} when there is nothing sensible to show
+     */
+    static String pretty(String keysym) {
+        if (keysym == null || keysym.isBlank()) return null;
+        String special = SPECIAL.get(keysym);
+        if (special != null) return special;
+        if (keysym.startsWith("KP_")) return "Numpad " + pretty(keysym.substring(3));
+        if (keysym.length() == 1) return keysym.toUpperCase();
+        return keysym.replace('_', ' ');
+    }
+}

ts3-client/desktop/src/main/java/com/ts3client/hotkey/desktop/X11KeyNamer.java

@@ -0,0 +1,47 @@
+package com.ts3client.hotkey.desktop;
+
+import com.ts3client.hotkey.HotkeyKey;
+
+import java.lang.foreign.MemorySegment;
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * Names keycodes using the X keyboard layout, so a hotkey button shows "A" rather than
+ * "Key 38". Bindings themselves stay layout-independent; only the label comes from here.
+ *
+ * <p>Keeps one long-lived display connection of its own, opened on first use, so it can
+ * be asked from any thread without racing the input hooks' own connections.
+ */
+final class X11KeyNamer {
+
+    private X11KeyNamer() {
+    }
+
+    private static final Map<Integer, String> CACHE = new HashMap<>();
+    private static MemorySegment display;
+    private static boolean tried;
+
+    static synchronized String name(HotkeyKey key) {
+        if (key.device() != HotkeyKey.Device.KEYBOARD) return null;
+        if (!tried) {
+            tried = true;
+            try {
+                if (Xlib.isCoreAvailable() && System.getenv("DISPLAY") != null) {
+                    display = Xlib.openDisplay();
+                }
+            } catch (Throwable ignored) {
+                display = null;
+            }
+        }
+        if (display == null || display.equals(MemorySegment.NULL)) return null;
+        return CACHE.computeIfAbsent(key.code(), code -> {
+            try {
+                long sym = Xlib.keysym(display, code);
+                return sym == 0 ? null : KeyNames.pretty(Xlib.keysymName(sym));
+            } catch (Throwable t) {
+                return null;
+            }
+        });
+    }
+}

ts3-client/desktop/src/main/java/com/ts3client/hotkey/desktop/XRecordInputHook.java

@@ -0,0 +1,212 @@
+package com.ts3client.hotkey.desktop;
+
+import com.ts3client.hotkey.GlobalInputHook;
+import com.ts3client.hotkey.HotkeyKey;
+
+import java.lang.foreign.Arena;
+import java.lang.foreign.MemorySegment;
+import java.lang.foreign.ValueLayout;
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;
+
+/**
+ * System-wide input hook built on X11's RECORD extension: it taps the core key and
+ * button events the server delivers to every client, so hotkeys work no matter which
+ * window has focus, and the keystroke still reaches that window untouched.
+ *
+ * <p>Two connections are needed, as RECORD demands: a control one that creates and
+ * later tears the context down, and a data one that blocks inside
+ * {@code XRecordEnableContext} handing us events.
+ *
+ * <p>Under Wayland the X server only ever sees events aimed at X clients, so this hook
+ * is not truly global there; {@link EvdevInputHook} is the way out.
+ */
+public final class XRecordInputHook implements GlobalInputHook {
+
+    private static final MethodHandle CALLBACK;
+
+    static {
+        try {
+            CALLBACK = MethodHandles.lookup().findStatic(XRecordInputHook.class, "onRecorded",
+                    MethodType.methodType(void.class, MemorySegment.class, MemorySegment.class));
+        } catch (ReflectiveOperationException e) {
+            throw new ExceptionInInitializerError(e);
+        }
+    }
+
+    /** The running hook, for the static upcall to find its way back. */
+    private static volatile XRecordInputHook current;
+
+    private Arena arena;
+    private MemorySegment control = MemorySegment.NULL;
+    private MemorySegment data = MemorySegment.NULL;
+    private long context;
+    private Thread thread;
+    private volatile Listener listener;
+    private volatile boolean running;
+    private volatile String unavailable = "not started";
+
+    public static boolean isSupported() {
+        return Xlib.isAvailable() && System.getenv("DISPLAY") != null;
+    }
+
+    @Override
+    public void start(Listener listener) {
+        this.listener = listener;
+        try {
+            open();
+        } catch (Throwable t) {
+            unavailable = describe(t);
+            closeQuietly();
+        }
+    }
+
+    private void open() {
+        arena = Arena.ofShared();
+        control = Xlib.openDisplay();
+        if (control.equals(MemorySegment.NULL)) {
+            throw new IllegalStateException("cannot open the X display");
+        }
+        if (!Xlib.queryRecordVersion(control, arena)) {
+            throw new IllegalStateException("the X server has no RECORD extension");
+        }
+
+        MemorySegment range = Xlib.allocRange();
+        if (range.equals(MemorySegment.NULL)) throw new IllegalStateException("XRecordAllocRange failed");
+        MemorySegment r = range.reinterpret(64);
+        r.set(ValueLayout.JAVA_BYTE, Xlib.RANGE_DEVICE_EVENTS_FIRST, (byte) Xlib.KEY_PRESS);
+        r.set(ValueLayout.JAVA_BYTE, Xlib.RANGE_DEVICE_EVENTS_LAST, (byte) Xlib.BUTTON_RELEASE);
+
+        MemorySegment clients = arena.allocate(ValueLayout.JAVA_LONG);
+        clients.set(ValueLayout.JAVA_LONG, 0, Xlib.ALL_CLIENTS);
+        MemorySegment ranges = arena.allocate(ValueLayout.ADDRESS);
+        ranges.set(ValueLayout.ADDRESS, 0, range);
+
+        context = Xlib.createContext(control, clients, 1, ranges, 1);
+        if (context == 0) throw new IllegalStateException("XRecordCreateContext failed");
+        // The context id is allocated client-side and the request is not a round trip:
+        // without this the second connection can enable a context the server has yet to
+        // create, which it answers with BadContext.
+        Xlib.sync(control);
+
+        data = Xlib.openDisplay();
+        if (data.equals(MemorySegment.NULL)) {
+            throw new IllegalStateException("cannot open the second X display connection");
+        }
+
+        MemorySegment stub = java.lang.foreign.Linker.nativeLinker()
+                .upcallStub(CALLBACK, Xlib.INTERCEPT_PROC, arena);
+
+        current = this;
+        running = true;
+        unavailable = "";
+        thread = new Thread(() -> {
+            try {
+                // Blocks until close() disables the context from the control connection.
+                Xlib.enableContext(data, context, stub);
+            } catch (Throwable ignored) {
+            } finally {
+                running = false;
+            }
+        }, "ts3j-hotkeys-xrecord");
+        thread.setDaemon(true);
+        thread.start();
+    }
+
+    /** Upcall target: one recorded protocol datum. */
+    @SuppressWarnings("unused")
+    private static void onRecorded(MemorySegment closure, MemorySegment recorded) {
+        XRecordInputHook hook = current;
+        MemorySegment d = recorded.reinterpret(48);
+        try {
+            if (hook == null || d.get(ValueLayout.JAVA_INT, Xlib.INTERCEPT_CATEGORY) != Xlib.FROM_SERVER) {
+                return;
+            }
+            long length = d.get(ValueLayout.JAVA_LONG, Xlib.INTERCEPT_DATA_LEN);
+            MemorySegment event = d.get(ValueLayout.ADDRESS, Xlib.INTERCEPT_DATA);
+            // data_len counts 4-byte units; a core event is always 32 bytes.
+            if (event.equals(MemorySegment.NULL) || length < 2) return;
+            event = event.reinterpret(32);
+            hook.dispatch(event.get(ValueLayout.JAVA_BYTE, 0) & 0x7f,
+                    event.get(ValueLayout.JAVA_BYTE, 1) & 0xff);
+        } catch (Throwable ignored) {
+        } finally {
+            Xlib.freeData(recorded);
+        }
+    }
+
+    private void dispatch(int type, int detail) {
+        Listener l = listener;
+        if (l == null) return;
+        switch (type) {
+            case Xlib.KEY_PRESS -> l.onInput(HotkeyKey.keyboard(detail), true);
+            case Xlib.KEY_RELEASE -> l.onInput(HotkeyKey.keyboard(detail), false);
+            case Xlib.BUTTON_PRESS -> l.onInput(HotkeyKey.mouse(detail), true);
+            case Xlib.BUTTON_RELEASE -> l.onInput(HotkeyKey.mouse(detail), false);
+            default -> {
+            }
+        }
+    }
+
+    @Override
+    public boolean isRunning() {
+        return running;
+    }
+
+    @Override
+    public String unavailableReason() {
+        return running ? "" : unavailable;
+    }
+
+    @Override
+    public String keyName(HotkeyKey key) {
+        return X11KeyNamer.name(key);
+    }
+
+    @Override
+    public void close() {
+        listener = null;
+        running = false;
+        try {
+            if (!control.equals(MemorySegment.NULL) && context != 0) {
+                Xlib.disableContext(control, context);
+                Xlib.flush(control);
+            }
+            if (thread != null) thread.join(1000);
+        } catch (Throwable ignored) {
+        }
+        closeQuietly();
+    }
+
+    private synchronized void closeQuietly() {
+        if (current == this) current = null;
+        try {
+            if (!control.equals(MemorySegment.NULL) && context != 0) Xlib.freeContext(control, context);
+        } catch (Throwable ignored) {
+        }
+        context = 0;
+        for (MemorySegment display : new MemorySegment[]{data, control}) {
+            try {
+                if (!display.equals(MemorySegment.NULL)) Xlib.closeDisplay(display);
+            } catch (Throwable ignored) {
+            }
+        }
+        data = control = MemorySegment.NULL;
+        // The arena owns the upcall stub: freeing it while the recording thread could
+        // still call into it would take the JVM down, so a stuck thread keeps it alive.
+        if (arena != null && (thread == null || !thread.isAlive())) {
+            try {
+                arena.close();
+            } catch (Throwable ignored) {
+            }
+            arena = null;
+        }
+        thread = null;
+    }
+
+    private static String describe(Throwable t) {
+        String message = t.getMessage();
+        return (message == null || message.isBlank()) ? t.getClass().getSimpleName() : message;
+    }
+}

ts3-client/desktop/src/main/java/com/ts3client/hotkey/desktop/Xlib.java

@@ -0,0 +1,207 @@
+package com.ts3client.hotkey.desktop;
+
+import java.lang.foreign.Arena;
+import java.lang.foreign.FunctionDescriptor;
+import java.lang.foreign.Linker;
+import java.lang.foreign.MemorySegment;
+import java.lang.foreign.SymbolLookup;
+import java.lang.foreign.ValueLayout;
+import java.lang.invoke.MethodHandle;
+import java.nio.charset.StandardCharsets;
+
+/**
+ * Raw binding to {@code libX11} and the RECORD extension in {@code libXtst}, with just
+ * the calls {@link XRecordInputHook} needs.
+ *
+ * <p>RECORD lets a client watch the core input events the server delivers to everyone
+ * else without intercepting them, which is exactly what a global hotkey needs: the
+ * keystroke still reaches the focused application.
+ *
+ * <p>Loading is lazy and failure is expected — with no X11 around, {@link #isAvailable()}
+ * returns {@code false} and the caller falls back to another backend.
+ */
+final class Xlib {
+
+    private Xlib() {
+    }
+
+    static final ValueLayout.OfInt INT = ValueLayout.JAVA_INT;
+    static final ValueLayout.OfLong LONG = ValueLayout.JAVA_LONG;
+    private static final java.lang.foreign.AddressLayout PTR = ValueLayout.ADDRESS;
+
+    /** Core event types (X.h) as they appear in the recorded protocol data. */
+    static final int KEY_PRESS = 2;
+    static final int KEY_RELEASE = 3;
+    static final int BUTTON_PRESS = 4;
+    static final int BUTTON_RELEASE = 5;
+
+    /** {@code XRecordAllClients}: record every client, present and future. */
+    static final long ALL_CLIENTS = 3L;
+
+    /** {@code XRecordInterceptData.category} values we care about. */
+    static final int FROM_SERVER = 0;
+
+    /**
+     * {@code XRecordRange}: only {@code device_events} is filled in. Its two bytes sit
+     * after the request/reply and delivered-event ranges, at a fixed LP64 offset.
+     */
+    static final long RANGE_DEVICE_EVENTS_FIRST = 18;
+    static final long RANGE_DEVICE_EVENTS_LAST = 19;
+
+    /** {@code XRecordInterceptData}: the protocol bytes and the reason we were called. */
+    static final long INTERCEPT_CATEGORY = 24;
+    static final long INTERCEPT_DATA = 32;
+    static final long INTERCEPT_DATA_LEN = 40;
+
+    private static final Linker LINKER = Linker.nativeLinker();
+    private static final String[] X11_NAMES = {"libX11.so.6", "libX11.so"};
+    private static final String[] XTST_NAMES = {"libXtst.so.6", "libXtst.so"};
+
+    /** libX11 alone: enough to open a display and name keys. */
+    private static final class Core {
+        static final SymbolLookup LIB = load(X11_NAMES, "libX11");
+
+        static final MethodHandle X_OPEN_DISPLAY =
+                downcall(LIB, "XOpenDisplay", FunctionDescriptor.of(PTR, PTR));
+        static final MethodHandle X_CLOSE_DISPLAY =
+                downcall(LIB, "XCloseDisplay", FunctionDescriptor.of(INT, PTR));
+        static final MethodHandle X_FLUSH =
+                downcall(LIB, "XFlush", FunctionDescriptor.of(INT, PTR));
+        static final MethodHandle X_SYNC =
+                downcall(LIB, "XSync", FunctionDescriptor.of(INT, PTR, INT));
+        static final MethodHandle XKB_KEYCODE_TO_KEYSYM =
+                downcall(LIB, "XkbKeycodeToKeysym", FunctionDescriptor.of(LONG, PTR, INT, INT, INT));
+        static final MethodHandle X_KEYSYM_TO_STRING =
+                downcall(LIB, "XKeysymToString", FunctionDescriptor.of(PTR, LONG));
+    }
+
+    /** The RECORD extension, which ships separately in libXtst. */
+    private static final class Record {
+        static final SymbolLookup LIB = load(XTST_NAMES, "libXtst");
+
+        static final MethodHandle QUERY_VERSION =
+                downcall(LIB, "XRecordQueryVersion", FunctionDescriptor.of(INT, PTR, PTR, PTR));
+        static final MethodHandle ALLOC_RANGE =
+                downcall(LIB, "XRecordAllocRange", FunctionDescriptor.of(PTR));
+        static final MethodHandle CREATE_CONTEXT =
+                downcall(LIB, "XRecordCreateContext",
+                        FunctionDescriptor.of(LONG, PTR, INT, PTR, INT, PTR, INT));
+        static final MethodHandle ENABLE_CONTEXT =
+                downcall(LIB, "XRecordEnableContext", FunctionDescriptor.of(INT, PTR, LONG, PTR, PTR));
+        static final MethodHandle DISABLE_CONTEXT =
+                downcall(LIB, "XRecordDisableContext", FunctionDescriptor.of(INT, PTR, LONG));
+        static final MethodHandle FREE_CONTEXT =
+                downcall(LIB, "XRecordFreeContext", FunctionDescriptor.of(INT, PTR, LONG));
+        static final MethodHandle FREE_DATA =
+                downcall(LIB, "XRecordFreeData", FunctionDescriptor.ofVoid(PTR));
+    }
+
+    private static SymbolLookup load(String[] names, String what) {
+        IllegalArgumentException last = null;
+        for (String name : names) {
+            try {
+                return SymbolLookup.libraryLookup(name, Arena.global());
+            } catch (IllegalArgumentException e) {
+                last = e;
+            }
+        }
+        throw (last != null) ? last : new IllegalArgumentException(what + " not found");
+    }
+
+    private static MethodHandle downcall(SymbolLookup lookup, String symbol,
+                                         FunctionDescriptor descriptor) {
+        return LINKER.downcallHandle(
+                lookup.find(symbol).orElseThrow(() ->
+                        new UnsatisfiedLinkError("unresolved symbol " + symbol)),
+                descriptor);
+    }
+
+    /** The C signature of {@code XRecordInterceptProc}. */
+    static final FunctionDescriptor INTERCEPT_PROC = FunctionDescriptor.ofVoid(PTR, PTR);
+
+    /** Whether libX11 loaded, which is all that naming keys needs. */
+    static boolean isCoreAvailable() {
+        try {
+            return Core.LIB != null;
+        } catch (Throwable t) {
+            return false;
+        }
+    }
+
+    static boolean isAvailable() {
+        try {
+            return Core.LIB != null && Record.LIB != null;
+        } catch (Throwable t) {
+            return false;
+        }
+    }
+
+    static MemorySegment openDisplay() {
+        return (MemorySegment) call(Core.X_OPEN_DISPLAY, MemorySegment.NULL);
+    }
+
+    static void closeDisplay(MemorySegment display) {
+        call(Core.X_CLOSE_DISPLAY, display);
+    }
+
+    static void flush(MemorySegment display) {
+        call(Core.X_FLUSH, display);
+    }
+
+    /** Flushes and waits for the server to have processed everything sent so far. */
+    static void sync(MemorySegment display) {
+        call(Core.X_SYNC, display, 0);
+    }
+
+    /** @return whether the server has the RECORD extension */
+    static boolean queryRecordVersion(MemorySegment display, Arena arena) {
+        MemorySegment major = arena.allocate(INT);
+        MemorySegment minor = arena.allocate(INT);
+        return (int) call(Record.QUERY_VERSION, display, major, minor) != 0;
+    }
+
+    static MemorySegment allocRange() {
+        return (MemorySegment) call(Record.ALLOC_RANGE);
+    }
+
+    static long createContext(MemorySegment display, MemorySegment clients, int clientCount,
+                              MemorySegment ranges, int rangeCount) {
+        return (long) call(Record.CREATE_CONTEXT, display, 0, clients, clientCount, ranges, rangeCount);
+    }
+
+    static int enableContext(MemorySegment display, long context, MemorySegment callback) {
+        return (int) call(Record.ENABLE_CONTEXT, display, context, callback, MemorySegment.NULL);
+    }
+
+    static void disableContext(MemorySegment display, long context) {
+        call(Record.DISABLE_CONTEXT, display, context);
+    }
+
+    static void freeContext(MemorySegment display, long context) {
+        call(Record.FREE_CONTEXT, display, context);
+    }
+
+    static void freeData(MemorySegment data) {
+        call(Record.FREE_DATA, data);
+    }
+
+    /** The unshifted keysym of a keycode in the first group, or 0 when unbound. */
+    static long keysym(MemorySegment display, int keycode) {
+        return (long) call(Core.XKB_KEYCODE_TO_KEYSYM, display, keycode, 0, 0);
+    }
+
+    /** The keysym's X name ("a", "Control_L", "F5"), or {@code null}. */
+    static String keysymName(long keysym) {
+        MemorySegment name = (MemorySegment) call(Core.X_KEYSYM_TO_STRING, keysym);
+        if (name == null || name.equals(MemorySegment.NULL)) return null;
+        return name.reinterpret(Long.MAX_VALUE).getString(0, StandardCharsets.US_ASCII);
+    }
+
+    private static Object call(MethodHandle handle, Object... args) {
+        try {
+            return handle.invokeWithArguments(args);
+        } catch (Throwable t) {
+            throw new IllegalStateException("X11 call failed", t);
+        }
+    }
+}

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

@@ -0,0 +1,147 @@
+package com.ts3client.ui;
+
+import com.ts3client.hotkey.Hotkey;
+import com.ts3client.hotkey.HotkeyEngine;
+
+import javax.swing.SwingUtilities;
+import java.util.List;
+
+/**
+ * Carries a fired hotkey out on the client.
+ *
+ * <p>Activations arrive on the input hook's thread, so everything is handed to the
+ * event dispatch thread first. Which connections an action reaches is the binding's
+ * "on active server" flag: set, only the selected tab; clear, every connected one.
+ */
+final class HotkeyActions implements HotkeyEngine.Handler {
+
+    /** How much one press of the master-volume hotkeys moves the slider. */
+    private static final double VOLUME_STEP = 0.05;
+
+    private final MainFrame frame;
+    /** Latched push-to-talk, driven by the "Toggle Push-to-Talk" action. */
+    private boolean pttLatched;
+
+    HotkeyActions(MainFrame frame) {
+        this.frame = frame;
+    }
+
+    @Override
+    public void onHotkey(Hotkey hotkey, boolean active) {
+        SwingUtilities.invokeLater(() -> perform(hotkey, active));
+    }
+
+    private void perform(Hotkey hotkey, boolean active) {
+        List<ServerTab> targets = frame.hotkeyTargets(hotkey.activeServerOnly);
+        switch (hotkey.action) {
+            case CONNECT_CURRENT_TAB -> frame.connectBookmark(hotkey.argument, false);
+            case CONNECT_NEW_TAB -> frame.connectBookmark(hotkey.argument, true);
+            case DISCONNECT_CURRENT -> {
+                ServerTab tab = frame.selectedTab();
+                if (tab != null) tab.disconnect();
+            }
+            case DISCONNECT_ALL -> {
+                for (ServerTab tab : frame.allTabs()) tab.disconnect();
+            }
+
+            case MIC_ACTIVATE -> frame.moveMicrophoneToSelectedTab();
+            case MIC_MUTE -> setMicMuted(targets, true);
+            case MIC_UNMUTE -> setMicMuted(targets, false);
+            case MIC_TOGGLE -> setMicMuted(targets, !anyMicMuted(targets));
+
+            case SPEAKER_MUTE -> setDeafened(targets, true);
+            case SPEAKER_UNMUTE -> setDeafened(targets, false);
+            case SPEAKER_TOGGLE -> setDeafened(targets, !anyDeafened(targets));
+
+            case AWAY_SET -> setAway(targets, true, "");
+            case AWAY_ONLINE -> setAway(targets, false, "");
+            case AWAY_TOGGLE -> setAway(targets, !anyAway(targets), "");
+            case AWAY_TOGGLE_WITH_MESSAGE -> setAway(targets, !anyAway(targets), hotkey.argument);
+
+            case COMMANDER_ACTIVATE -> setCommander(targets, true);
+            case COMMANDER_DEACTIVATE -> setCommander(targets, false);
+            case COMMANDER_TOGGLE -> setCommander(targets, !anyCommander(targets));
+
+            // Momentary: the engine reports the release too, so the key simply holds it open.
+            case PTT_ACTIVATE -> frame.setPushToTalk(active || pttLatched);
+            case PTT_DEACTIVATE -> {
+                pttLatched = false;
+                frame.setPushToTalk(false);
+            }
+            case PTT_TOGGLE -> {
+                pttLatched = !pttLatched;
+                frame.setPushToTalk(pttLatched);
+            }
+
+            case CHANNEL_SWITCH -> {
+                for (ServerTab tab : targets) tab.joinChannelPath(hotkey.argument);
+            }
+            case SERVER_TAB_SELECT -> frame.selectTabNumber(parseIndex(hotkey.argument));
+            case SERVER_TAB_NEXT -> frame.stepTab(1);
+            case SERVER_TAB_PREVIOUS -> frame.stepTab(-1);
+
+            case SOUND_MUTE -> frame.setSoundsMuted(true);
+            case SOUND_UNMUTE -> frame.setSoundsMuted(false);
+            case SOUND_TOGGLE -> frame.setSoundsMuted(!frame.areSoundsMuted());
+
+            case VOLUME_INCREASE -> frame.adjustMasterVolume(VOLUME_STEP);
+            case VOLUME_DECREASE -> frame.adjustMasterVolume(-VOLUME_STEP);
+
+            case NICKNAME_CHANGE -> frame.changeNickname(hotkey.argument);
+
+            case FILEBROWSER -> frame.browseCurrentChannel();
+            case SKIN_RELOAD -> frame.reloadSkin();
+            case BRING_TO_FRONT -> frame.bringToFront();
+            case SEND_TO_BACK -> frame.sendToBack();
+
+            default -> {
+                // Listed for completeness in the action catalogue, but not implemented here.
+            }
+        }
+    }
+
+    private void setMicMuted(List<ServerTab> targets, boolean muted) {
+        for (ServerTab tab : targets) tab.setMicMuted(muted);
+        frame.refreshAfterHotkey();
+    }
+
+    private void setDeafened(List<ServerTab> targets, boolean deaf) {
+        for (ServerTab tab : targets) tab.setDeafened(deaf);
+        frame.refreshAfterHotkey();
+    }
+
+    private void setAway(List<ServerTab> targets, boolean away, String message) {
+        for (ServerTab tab : targets) tab.setAway(away, message == null ? "" : message);
+        frame.refreshAfterHotkey();
+    }
+
+    private void setCommander(List<ServerTab> targets, boolean commander) {
+        for (ServerTab tab : targets) tab.setCommander(commander);
+        frame.refreshAfterHotkey();
+    }
+
+    private static boolean anyMicMuted(List<ServerTab> tabs) {
+        return tabs.stream().anyMatch(ServerTab::isMicMuted);
+    }
+
+    private static boolean anyDeafened(List<ServerTab> tabs) {
+        return tabs.stream().anyMatch(ServerTab::isDeafened);
+    }
+
+    private static boolean anyAway(List<ServerTab> tabs) {
+        return tabs.stream().anyMatch(ServerTab::isAway);
+    }
+
+    private static boolean anyCommander(List<ServerTab> tabs) {
+        return tabs.stream().anyMatch(ServerTab::isCommander);
+    }
+
+    /** @return the 1-based tab number in the argument, or 1 when it is not a number */
+    private static int parseIndex(String argument) {
+        try {
+            return Math.max(1, Integer.parseInt(argument.trim()));
+        } catch (RuntimeException e) {
+            return 1;
+        }
+    }
+}

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

@@ -0,0 +1,16 @@
+package com.ts3client.ui;
+
+import com.ts3client.hotkey.HotkeyAction;
+
+import java.util.List;
+
+/**
+ * Supplies the concrete values an action's parameter can take — the bookmarks, sound
+ * packs and channels the hotkey tree hangs under an action as its leaves, so a binding
+ * reads as "Sounds / Activate Soundpack / Default Sound Pack (Male)".
+ */
+interface HotkeyArguments {
+
+    /** @return the choices for this action, or an empty list when it is free-form */
+    List<String> choices(HotkeyAction action);
+}

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

@@ -0,0 +1,385 @@
+package com.ts3client.ui;
+
+import com.ts3client.hotkey.Hotkey;
+import com.ts3client.hotkey.HotkeyAction;
+import com.ts3client.hotkey.HotkeyCombo;
+import com.ts3client.hotkey.HotkeyEngine;
+
+import javax.swing.BorderFactory;
+import javax.swing.Box;
+import javax.swing.DefaultListCellRenderer;
+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.JList;
+import javax.swing.JPanel;
+import javax.swing.JScrollPane;
+import javax.swing.JTextField;
+import javax.swing.JTree;
+import javax.swing.SwingUtilities;
+import javax.swing.tree.DefaultMutableTreeNode;
+import javax.swing.tree.DefaultTreeCellRenderer;
+import javax.swing.tree.DefaultTreeModel;
+import javax.swing.tree.TreePath;
+import javax.swing.tree.TreeSelectionModel;
+import java.awt.BorderLayout;
+import java.awt.Component;
+import java.awt.Dimension;
+import java.awt.Font;
+import java.awt.GridBagConstraints;
+import java.awt.GridBagLayout;
+import java.awt.Insets;
+import java.awt.Window;
+import java.util.List;
+
+/**
+ * Adds or edits one hotkey, following the official client's dialog: pick the action
+ * from the tree — category, action group, action, and where the action takes one, the
+ * concrete bookmark, sound pack or channel — press the key combination to bind, and
+ * choose the edge it triggers on and whether it applies to the active server only.
+ */
+final class HotkeyDialog extends JDialog {
+
+    /**
+     * A tree node: a category or group heading ({@code action == null}), an action, or
+     * one of the values an action's parameter can take ({@code argument != null}).
+     */
+    private record Node(HotkeyAction action, String argument, String label) {
+
+        static Node heading(String label) {
+            return new Node(null, null, label);
+        }
+
+        static Node of(HotkeyAction action) {
+            return new Node(action, null, action.label());
+        }
+
+        static Node value(HotkeyAction action, String argument) {
+            return new Node(action, argument, argument);
+        }
+
+        boolean isHeading() {
+            return action == null;
+        }
+
+        @Override
+        public String toString() {
+            return label;
+        }
+    }
+
+    private final HotkeyService service;
+    private final Hotkey hotkey;
+
+    private final DefaultMutableTreeNode root = new DefaultMutableTreeNode("Actions");
+    private final DefaultTreeModel treeModel = new DefaultTreeModel(root);
+    private final JTree tree = new JTree(treeModel);
+    private final JCheckBox advancedCheck = new JCheckBox("Show advanced actions");
+    private final JButton keyButton = new JButton();
+    private final JComboBox<Hotkey.Trigger> triggerCombo = new JComboBox<>(Hotkey.Trigger.values());
+    private final JCheckBox activeServerCheck = new JCheckBox("On active server");
+    private final JLabel argumentLabel = new JLabel();
+    private final JTextField argumentField = new JTextField();
+    private final JLabel hint = new JLabel();
+
+    private HotkeyCombo combo;
+    private boolean recording;
+    private boolean confirmed;
+
+    HotkeyDialog(Window owner, HotkeyService service, Hotkey existing) {
+        // Any window may open this: the options dialog's hotkey tab as much as a frame.
+        super(owner, existing == null ? "Add hotkey" : "Edit hotkey", ModalityType.APPLICATION_MODAL);
+        this.service = service;
+        this.hotkey = existing == null ? new Hotkey() : existing.copy();
+        this.combo = hotkey.combo;
+
+        advancedCheck.setSelected(hotkey.action != null && hotkey.action.advanced());
+        advancedCheck.addActionListener(e -> rebuildTree());
+        tree.setRootVisible(false);
+        tree.setShowsRootHandles(true);
+        tree.getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);
+        tree.setCellRenderer(new NodeRenderer());
+        tree.addTreeSelectionListener(e -> selectionChanged());
+        rebuildTree();
+
+        keyButton.addActionListener(e -> startRecording());
+        triggerCombo.setRenderer(new DefaultListCellRenderer() {
+            @Override
+            public Component getListCellRendererComponent(JList<?> list, Object value, int index,
+                                                          boolean selected, boolean focused) {
+                super.getListCellRendererComponent(list, value, index, selected, focused);
+                if (value instanceof Hotkey.Trigger t) setText(t.label());
+                return this;
+            }
+        });
+        triggerCombo.setSelectedItem(hotkey.trigger);
+        activeServerCheck.setSelected(hotkey.activeServerOnly);
+        argumentField.setText(hotkey.argument == null ? "" : hotkey.argument);
+        hint.setFont(hint.getFont().deriveFont(Font.ITALIC, hint.getFont().getSize2D() - 1f));
+
+        getContentPane().setLayout(new BorderLayout(8, 8));
+        ((JComponent) getContentPane()).setBorder(BorderFactory.createEmptyBorder(8, 8, 8, 8));
+        getContentPane().add(buildActionPane(), BorderLayout.CENTER);
+        getContentPane().add(buildForm(), BorderLayout.SOUTH);
+
+        updateKeyButton();
+        updateForAction();
+        Dialogs.closeOnEscape(this, this::cancel);
+        setDefaultCloseOperation(DISPOSE_ON_CLOSE);
+        setSize(new Dimension(470, 560));
+        setLocationRelativeTo(owner);
+    }
+
+    private JPanel buildActionPane() {
+        JPanel p = new JPanel(new BorderLayout(0, 4));
+        p.add(new JLabel("Action:"), BorderLayout.NORTH);
+        p.add(new JScrollPane(tree), BorderLayout.CENTER);
+        p.add(advancedCheck, BorderLayout.SOUTH);
+        return p;
+    }
+
+    private JPanel buildForm() {
+        JPanel p = new JPanel(new GridBagLayout());
+        GridBagConstraints c = new GridBagConstraints();
+        c.insets = new Insets(3, 3, 3, 3);
+        c.anchor = GridBagConstraints.WEST;
+        c.fill = GridBagConstraints.HORIZONTAL;
+
+        int row = 0;
+        addRow(p, c, row++, new JLabel("Hotkey:"), keyButton);
+        addRow(p, c, row++, argumentLabel, argumentField);
+        addRow(p, c, row++, new JLabel("Trigger:"), triggerCombo);
+
+        c.gridx = 1;
+        c.gridy = row++;
+        p.add(activeServerCheck, c);
+        c.gridx = 0;
+        c.gridy = row++;
+        c.gridwidth = 2;
+        p.add(hint, c);
+
+        JPanel buttons = new JPanel();
+        JButton ok = new JButton("OK");
+        JButton cancel = new JButton("Cancel");
+        ok.addActionListener(e -> confirm());
+        cancel.addActionListener(e -> cancel());
+        buttons.add(Box.createHorizontalGlue());
+        buttons.add(ok);
+        buttons.add(cancel);
+        c.gridy = row;
+        p.add(buttons, c);
+        getRootPane().setDefaultButton(ok);
+        return p;
+    }
+
+    private static void addRow(JPanel p, GridBagConstraints c, int row, JComponent left, JComponent right) {
+        c.gridwidth = 1;
+        c.gridx = 0;
+        c.gridy = row;
+        c.weightx = 0;
+        p.add(left, c);
+        c.gridx = 1;
+        c.weightx = 1;
+        p.add(right, c);
+    }
+
+    /**
+     * Builds category → group → action → value, collapsing the groups TS3 leaves
+     * unnamed so their actions sit directly under the category.
+     */
+    private void rebuildTree() {
+        boolean advanced = advancedCheck.isSelected();
+        root.removeAllChildren();
+        for (HotkeyAction.Category category : HotkeyAction.Category.values()) {
+            List<HotkeyAction> actions = HotkeyAction.of(category, advanced);
+            if (actions.isEmpty()) continue;
+            DefaultMutableTreeNode categoryNode =
+                    new DefaultMutableTreeNode(Node.heading(category.label()));
+            DefaultMutableTreeNode groupNode = null;
+            String groupName = null;
+            for (HotkeyAction action : actions) {
+                DefaultMutableTreeNode parent = categoryNode;
+                if (!action.group().isEmpty()) {
+                    if (groupNode == null || !action.group().equals(groupName)) {
+                        groupName = action.group();
+                        groupNode = new DefaultMutableTreeNode(Node.heading(groupName));
+                        categoryNode.add(groupNode);
+                    }
+                    parent = groupNode;
+                }
+                DefaultMutableTreeNode actionNode = new DefaultMutableTreeNode(Node.of(action));
+                parent.add(actionNode);
+                for (String value : service.argumentChoices(action)) {
+                    actionNode.add(new DefaultMutableTreeNode(Node.value(action, value)));
+                }
+            }
+            root.add(categoryNode);
+        }
+        treeModel.reload();
+        // Categories open, groups closed: the whole action set at a glance, as in TS3.
+        for (int i = 0; i < root.getChildCount(); i++) {
+            tree.expandPath(new TreePath(((DefaultMutableTreeNode) root.getChildAt(i)).getPath()));
+        }
+        selectCurrent();
+    }
+
+    /** Reveals and selects the node matching the binding being edited. */
+    private void selectCurrent() {
+        if (hotkey.action == null) return;
+        DefaultMutableTreeNode match = null;
+        var nodes = root.depthFirstEnumeration();
+        while (nodes.hasMoreElements()) {
+            DefaultMutableTreeNode node = (DefaultMutableTreeNode) nodes.nextElement();
+            if (!(node.getUserObject() instanceof Node n) || n.action() != hotkey.action) continue;
+            boolean sameArgument = n.argument() != null && n.argument().equals(hotkey.argument);
+            if (sameArgument) {
+                match = node;
+                break;
+            }
+            if (n.argument() == null && match == null) match = node;
+        }
+        if (match == null) return;
+        TreePath path = new TreePath(match.getPath());
+        tree.setSelectionPath(path);
+        SwingUtilities.invokeLater(() -> tree.scrollPathToVisible(path));
+    }
+
+    private void selectionChanged() {
+        if (!(tree.getLastSelectedPathComponent() instanceof DefaultMutableTreeNode node)
+                || !(node.getUserObject() instanceof Node selected)) {
+            return;
+        }
+        if (selected.isHeading()) {
+            // Headings only structure the tree; keep the action that was chosen before.
+            tree.clearSelection();
+            selectCurrent();
+            return;
+        }
+        hotkey.action = selected.action();
+        if (selected.argument() != null) argumentField.setText(selected.argument());
+        updateForAction();
+    }
+
+    /** Syncs the form to the selected action: parameter row, trigger, scope and hint. */
+    private void updateForAction() {
+        HotkeyAction action = hotkey.action;
+        boolean takesArgument = action != null && action.argument() != HotkeyAction.Argument.NONE;
+        argumentLabel.setText(takesArgument ? argumentLabel(action) : "");
+        argumentLabel.setVisible(takesArgument);
+        argumentField.setVisible(takesArgument);
+
+        boolean momentary = action != null && action.momentary();
+        triggerCombo.setEnabled(!momentary);
+        activeServerCheck.setEnabled(action != null && action.category() != HotkeyAction.Category.MISC);
+
+        if (action != null && !action.supported()) {
+            hint.setText("This action is part of TeamSpeak's hotkey set but is not implemented yet.");
+        } else if (momentary) {
+            hint.setText("Held down: the action lasts as long as the hotkey is pressed.");
+        } else {
+            hint.setText(service.isRunning() ? " " : service.status());
+        }
+    }
+
+    private static String argumentLabel(HotkeyAction action) {
+        return switch (action.argument()) {
+            case BOOKMARK -> "Bookmark:";
+            case CHANNEL -> "Channel path:";
+            case PROFILE -> "Profile:";
+            default -> "Parameter:";
+        };
+    }
+
+    private void startRecording() {
+        if (recording) return;
+        if (!service.isRunning()) {
+            hint.setText(service.status());
+            return;
+        }
+        recording = true;
+        keyButton.setText("Press hotkey combination…");
+        service.record(new HotkeyEngine.Recorder() {
+            @Override
+            public void onRecording(HotkeyCombo partial) {
+                SwingUtilities.invokeLater(() -> keyButton.setText(service.display(partial) + "…"));
+            }
+
+            @Override
+            public void onRecorded(HotkeyCombo recorded) {
+                SwingUtilities.invokeLater(() -> {
+                    combo = recorded;
+                    stopRecording();
+                });
+            }
+        });
+    }
+
+    private void stopRecording() {
+        if (!recording) return;
+        recording = false;
+        service.stopRecording();
+        updateKeyButton();
+    }
+
+    private void updateKeyButton() {
+        keyButton.setText(combo == null || combo.isEmpty()
+                ? "No hotkey assigned" : service.display(combo));
+    }
+
+    private void confirm() {
+        stopRecording();
+        if (hotkey.action == null || combo == null || combo.isEmpty()) {
+            hint.setText("Pick an action and press a key combination first.");
+            return;
+        }
+        if (!hotkey.action.supported()) {
+            hint.setText("This action is not implemented yet — pick another one.");
+            return;
+        }
+        hotkey.combo = combo;
+        hotkey.trigger = (Hotkey.Trigger) triggerCombo.getSelectedItem();
+        hotkey.activeServerOnly = activeServerCheck.isSelected();
+        hotkey.argument = argumentField.getText().trim();
+        confirmed = true;
+        dispose();
+    }
+
+    private void cancel() {
+        stopRecording();
+        dispose();
+    }
+
+    boolean isConfirmed() {
+        return confirmed;
+    }
+
+    Hotkey result() {
+        return hotkey;
+    }
+
+    /** Draws headings in bold and greys out the actions this client cannot perform. */
+    private static final class NodeRenderer extends DefaultTreeCellRenderer {
+        @Override
+        public Component getTreeCellRendererComponent(JTree tree, Object value, boolean selected,
+                                                      boolean expanded, boolean leaf, int row,
+                                                      boolean focused) {
+            super.getTreeCellRendererComponent(tree, value, selected, expanded, leaf, row, focused);
+            setIcon(null);
+            if (!(value instanceof DefaultMutableTreeNode node)
+                    || !(node.getUserObject() instanceof Node n)) {
+                return this;
+            }
+            if (n.isHeading()) {
+                setFont(getFont().deriveFont(Font.BOLD));
+                setToolTipText(null);
+            } else {
+                setEnabled(n.action().supported());
+                setToolTipText(n.action().supported() ? null : "Not implemented by this client");
+            }
+            return this;
+        }
+    }
+}

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

@@ -0,0 +1,94 @@
+package com.ts3client.ui;
+
+import com.ts3client.hotkey.GlobalInputHook;
+import com.ts3client.hotkey.Hotkey;
+import com.ts3client.hotkey.HotkeyAction;
+import com.ts3client.hotkey.HotkeyCombo;
+import com.ts3client.hotkey.HotkeyEngine;
+import com.ts3client.hotkey.HotkeyKey;
+import com.ts3client.hotkey.Hotkeys;
+import com.ts3client.hotkey.desktop.DesktopInputHooks;
+
+import java.util.List;
+
+/**
+ * Owns the hotkey machinery for the UI: the stored bindings, the matching engine and
+ * the platform input hook they are fed from. Everything the dialogs need — recording a
+ * combination, naming keys, telling the user why hotkeys are dead — goes through here.
+ */
+final class HotkeyService {
+
+    private final Hotkeys hotkeys = Hotkeys.load();
+    private final HotkeyEngine engine;
+    private final GlobalInputHook hook;
+    private final HotkeyArguments arguments;
+
+    HotkeyService(HotkeyEngine.Handler handler, HotkeyArguments arguments) {
+        this.arguments = arguments;
+        engine = new HotkeyEngine(hotkeys, handler);
+        hook = DesktopInputHooks.start(engine);
+    }
+
+    /** The values this action's parameter can take right now, for the action tree. */
+    List<String> argumentChoices(HotkeyAction action) {
+        if (arguments == null || action.argument() == HotkeyAction.Argument.NONE) return List.of();
+        try {
+            return arguments.choices(action);
+        } catch (RuntimeException e) {
+            return List.of();
+        }
+    }
+
+    List<Hotkey> all() {
+        return hotkeys.all();
+    }
+
+    void replaceAll(List<Hotkey> updated) {
+        engine.releaseAll();
+        hotkeys.replaceAll(updated);
+        hotkeys.save();
+    }
+
+    /** The binding for an action with no argument, or {@code null} when unbound. */
+    Hotkey find(HotkeyAction action) {
+        synchronized (hotkeys.all()) {
+            for (Hotkey h : hotkeys.all()) {
+                if (h.action == action) return h;
+            }
+        }
+        return null;
+    }
+
+    boolean isRunning() {
+        return hook.isRunning();
+    }
+
+    /** One line for the options dialog: either working, or why it is not. */
+    String status() {
+        return hook.isRunning()
+                ? "Global hotkeys are active."
+                : "Global hotkeys are unavailable (" + hook.unavailableReason() + ").";
+    }
+
+    String display(HotkeyCombo combo) {
+        return combo == null ? "No hotkey assigned" : combo.display(this::keyName);
+    }
+
+    private String keyName(HotkeyKey key) {
+        return hook.keyName(key);
+    }
+
+    /** Captures the next combination instead of firing bindings; see {@link #stopRecording()}. */
+    void record(HotkeyEngine.Recorder recorder) {
+        engine.record(recorder);
+    }
+
+    void stopRecording() {
+        engine.stopRecording();
+    }
+
+    void dispose() {
+        engine.releaseAll();
+        hook.close();
+    }
+}

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

@@ -0,0 +1,170 @@
+package com.ts3client.ui;
+
+import com.ts3client.hotkey.Hotkey;
+
+import javax.swing.BorderFactory;
+import javax.swing.JButton;
+import javax.swing.JLabel;
+import javax.swing.JPanel;
+import javax.swing.JScrollPane;
+import javax.swing.JTable;
+import javax.swing.ListSelectionModel;
+import javax.swing.SwingUtilities;
+import javax.swing.table.AbstractTableModel;
+import java.awt.BorderLayout;
+import java.awt.Font;
+import java.awt.Window;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * The options dialog's hotkey tab: the list of bindings with the buttons to add, edit
+ * and remove them. Edits happen on a working copy and only reach the running engine
+ * when the dialog is applied.
+ */
+final class HotkeysPanel extends JPanel {
+
+    private static final String[] COLUMNS = {"Action", "Hotkey", "Trigger", "Active server", "On"};
+
+    private final HotkeyService service;
+    private final List<Hotkey> working = new ArrayList<>();
+    private final Model model = new Model();
+    private final JTable table = new JTable(model);
+
+    HotkeysPanel(HotkeyService service) {
+        super(new BorderLayout(6, 6));
+        this.service = service;
+        setBorder(BorderFactory.createEmptyBorder(8, 8, 8, 8));
+
+        synchronized (service.all()) {
+            for (Hotkey h : service.all()) working.add(h.copy());
+        }
+
+        table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
+        table.setRowHeight(table.getRowHeight() + 4);
+        table.getColumnModel().getColumn(0).setPreferredWidth(240);
+        table.getColumnModel().getColumn(1).setPreferredWidth(150);
+        table.addMouseListener(new MouseAdapter() {
+            @Override
+            public void mouseClicked(MouseEvent e) {
+                if (e.getClickCount() == 2) edit();
+            }
+        });
+
+        JButton add = new JButton("Add…");
+        JButton edit = new JButton("Edit…");
+        JButton remove = new JButton("Remove");
+        add.addActionListener(e -> add());
+        edit.addActionListener(e -> edit());
+        remove.addActionListener(e -> remove());
+
+        JPanel buttons = new JPanel();
+        buttons.add(add);
+        buttons.add(edit);
+        buttons.add(remove);
+
+        JLabel status = new JLabel(service.status());
+        status.setFont(status.getFont().deriveFont(Font.ITALIC, status.getFont().getSize2D() - 1f));
+
+        add(new JScrollPane(table), BorderLayout.CENTER);
+        JPanel south = new JPanel(new BorderLayout());
+        south.add(buttons, BorderLayout.WEST);
+        south.add(status, BorderLayout.SOUTH);
+        add(south, BorderLayout.SOUTH);
+    }
+
+    private void add() {
+        HotkeyDialog dlg = new HotkeyDialog(owner(), service, null);
+        dlg.setVisible(true);
+        if (!dlg.isConfirmed()) return;
+        working.add(dlg.result());
+        model.fireTableDataChanged();
+    }
+
+    private void edit() {
+        int row = table.getSelectedRow();
+        if (row < 0) return;
+        HotkeyDialog dlg = new HotkeyDialog(owner(), service, working.get(row));
+        dlg.setVisible(true);
+        if (!dlg.isConfirmed()) return;
+        working.set(row, dlg.result());
+        model.fireTableRowsUpdated(row, row);
+    }
+
+    private void remove() {
+        int row = table.getSelectedRow();
+        if (row < 0) return;
+        working.remove(row);
+        model.fireTableDataChanged();
+    }
+
+    private Window owner() {
+        return SwingUtilities.getWindowAncestor(this);
+    }
+
+    /** Commits the edited list to the engine and to disk. */
+    void apply() {
+        service.replaceAll(working);
+    }
+
+    /** Picks the stored bindings up again after something else changed them. */
+    void reload() {
+        working.clear();
+        synchronized (service.all()) {
+            for (Hotkey h : service.all()) working.add(h.copy());
+        }
+        model.fireTableDataChanged();
+    }
+
+    private final class Model extends AbstractTableModel {
+
+        @Override
+        public int getRowCount() {
+            return working.size();
+        }
+
+        @Override
+        public int getColumnCount() {
+            return COLUMNS.length;
+        }
+
+        @Override
+        public String getColumnName(int column) {
+            return COLUMNS[column];
+        }
+
+        @Override
+        public Class<?> getColumnClass(int column) {
+            return column >= 3 ? Boolean.class : String.class;
+        }
+
+        @Override
+        public boolean isCellEditable(int row, int column) {
+            return column == 4 || (column == 3 && working.get(row).isServerScoped());
+        }
+
+        @Override
+        public Object getValueAt(int row, int column) {
+            Hotkey h = working.get(row);
+            return switch (column) {
+                case 0 -> h.path();
+                case 1 -> service.display(h.combo);
+                case 2 -> h.action.momentary() ? "While held" : h.trigger.label();
+                case 3 -> h.isServerScoped() && h.activeServerOnly;
+                default -> h.enabled;
+            };
+        }
+
+        @Override
+        public void setValueAt(Object value, int row, int column) {
+            Hotkey h = working.get(row);
+            if (column == 3) {
+                h.activeServerOnly = Boolean.TRUE.equals(value);
+            } else if (column == 4) {
+                h.enabled = Boolean.TRUE.equals(value);
+            }
+        }
+    }
+}

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

@@ -7,6 +7,7 @@ import com.ts3client.config.Bookmark;
 import com.ts3client.config.Bookmarks;
 import com.ts3client.config.IdentityStore;
 import com.ts3client.config.Settings;
+import com.ts3client.net.ChannelNode;
 import com.ts3client.sound.SoundNotifier;
 import com.ts3client.sound.SoundPlayer;
 
@@ -31,9 +32,6 @@ import javax.swing.SwingUtilities;
 import java.awt.BorderLayout;
 import java.awt.Dimension;
 import java.awt.GridLayout;
-import java.awt.KeyEventDispatcher;
-import java.awt.KeyboardFocusManager;
-import java.awt.event.KeyEvent;
 import java.awt.event.WindowAdapter;
 import java.awt.event.WindowEvent;
 import java.util.ArrayList;
@@ -89,6 +87,9 @@ public final class MainFrame extends JFrame implements ServerTabPane.Listener {
 
     private boolean pttPressed;
 
+    /** Global hotkeys: the bindings, the matching engine and the platform input hook. */
+    private final HotkeyService hotkeys;
+
     /** Guards {@link #shutdown()} so the window listener and JVM hook don't both run it. */
     private final AtomicBoolean shuttingDown = new AtomicBoolean(false);
     private final Thread shutdownHook = new Thread(this::shutdown, "ts3j-shutdown");
@@ -100,6 +101,7 @@ public final class MainFrame extends JFrame implements ServerTabPane.Listener {
         this.sounds = new SoundNotifier(settings);
         this.soundPlayer = audio.createSoundPlayer(settings);
         this.sounds.setPlayer(soundPlayer);
+        this.hotkeys = new HotkeyService(new HotkeyActions(this), this::hotkeyArgumentChoices);
 
         setIconImage(Icons.app().getImage());
         // We tear the connections down ourselves on close, so don't let Swing kill the JVM.
@@ -132,7 +134,6 @@ public final class MainFrame extends JFrame implements ServerTabPane.Listener {
         first.chat().appendSystem("Use Connections → Connect to join a server.");
         first.chat().appendSystem(tray.status());
 
-        installPushToTalk();
         statusTimer = new javax.swing.Timer(3000, e -> updateConnectionStatus());
         statusTimer.start();
         setSize(880, 560);
@@ -436,26 +437,151 @@ public final class MainFrame extends JFrame implements ServerTabPane.Listener {
         tabUpdated(tab);
     }
 
-    // ---- push to talk ----
+    // ---- hotkeys ----
 
-    private void installPushToTalk() {
+    /**
-        KeyboardFocusManager.getCurrentKeyboardFocusManager().addKeyEventDispatcher(new KeyEventDispatcher() {
+     * Which connections a fired hotkey reaches: with "on active server" ticked only the
-            @Override
+     * selected tab, otherwise every connected one.
-            public boolean dispatchKeyEvent(KeyEvent e) {
+     */
-                if (settings.inputMode != Settings.InputMode.PUSH_TO_TALK) return false;
+    List<ServerTab> hotkeyTargets(boolean activeServerOnly) {
+        List<ServerTab> out = new ArrayList<>();
+        if (activeServerOnly) {
+            if (selected != null && selected.isConnected()) out.add(selected);
+            return out;
+        }
+        for (ServerTab tab : tabs) {
+            if (tab.isConnected()) out.add(tab);
+        }
+        return out;
+    }
+
+    ServerTab selectedTab() {
+        return selected;
+    }
+
+    List<ServerTab> allTabs() {
+        return new ArrayList<>(tabs);
+    }
+
+    /** Opens the microphone while a push-to-talk hotkey is held. */
+    void setPushToTalk(boolean talking) {
+        pttPressed = talking;
         ServerTab tab = micTab;
-                if (tab == null || !tab.isConnected() || tab.connection().getMicrophone() == null) return false;
+        if (tab == null || !tab.isConnected() || tab.connection().getMicrophone() == null) return;
-                if (e.getKeyCode() != settings.pushToTalkKey) return false;
+        tab.connection().getMicrophone().setPushToTalk(talking);
-                if (e.getID() == KeyEvent.KEY_PRESSED && !pttPressed) {
-                    pttPressed = true;
-                    tab.connection().getMicrophone().setPushToTalk(true);
-                } else if (e.getID() == KeyEvent.KEY_RELEASED) {
-                    pttPressed = false;
-                    tab.connection().getMicrophone().setPushToTalk(false);
     }
-                return false;
+
+    void moveMicrophoneToSelectedTab() {
+        if (selected != null && selected.isConnected()) setMicTab(selected);
+        updateToolbar();
     }
-        });
+
+    /** Connects to the bookmark with this label; no label means the first one. */
+    void connectBookmark(String label, boolean newTab) {
+        Bookmark match = null;
+        for (Bookmark b : bookmarks.all()) {
+            if (label == null || label.isBlank() || label.equalsIgnoreCase(b.label)) {
+                match = b;
+                break;
+            }
+        }
+        if (match == null) return;
+        if (newTab) selectTab(newTab());
+        connectToBookmark(match);
+    }
+
+    /** Selects the tab with this 1-based number, as the "Select Server Tab" action names it. */
+    void selectTabNumber(int number) {
+        if (number >= 1 && number <= tabs.size()) selectTab(tabs.get(number - 1));
+    }
+
+    void stepTab(int delta) {
+        if (tabs.isEmpty()) return;
+        int index = Math.max(0, tabs.indexOf(selected));
+        selectTab(tabs.get(Math.floorMod(index + delta, tabs.size())));
+    }
+
+    void setSoundsMuted(boolean muted) {
+        sounds.setMuted(muted);
+    }
+
+    boolean areSoundsMuted() {
+        return sounds.isMuted();
+    }
+
+    void adjustMasterVolume(double delta) {
+        settings.outputVolume = Math.max(0, Math.min(2.0, settings.outputVolume + delta));
+        settings.save();
+        applyOutputSettingsToAllTabs();
+        updateStatusLabel();
+    }
+
+    /** Applies a new nickname, or asks for one when the hotkey carries none. */
+    void changeNickname(String nickname) {
+        if (nickname == null || nickname.isBlank()) {
+            changeNickname();
+            return;
+        }
+        settings.nickname = nickname.trim();
+        settings.save();
+        for (ServerTab tab : tabs) tab.setNickname(settings.nickname);
+    }
+
+    void browseCurrentChannel() {
+        if (selected == null || !selected.isConnected()) return;
+        ChannelNode channel = selected.currentChannel();
+        if (channel != null) selected.browseFiles(channel);
+    }
+
+    void reloadSkin() {
+        IconTheme.get().reload(settings);
+    }
+
+    void bringToFront() {
+        setVisible(true);
+        setExtendedState(getExtendedState() & ~JFrame.ICONIFIED);
+        toFront();
+        requestFocus();
+    }
+
+    void sendToBack() {
+        setExtendedState(getExtendedState() | JFrame.ICONIFIED);
+    }
+
+    /**
+     * The values a parameterised hotkey action can take, for the tree in the hotkey
+     * dialog: the saved bookmarks, the installed sound packs and the channels of the
+     * server on screen.
+     */
+    private List<String> hotkeyArgumentChoices(com.ts3client.hotkey.HotkeyAction action) {
+        List<String> out = new ArrayList<>();
+        switch (action.argument()) {
+            case BOOKMARK -> {
+                for (Bookmark b : bookmarks.all()) {
+                    if (b.label != null && !b.label.isBlank()) out.add(b.label);
+                }
+            }
+            case PROFILE -> {
+                if (action == com.ts3client.hotkey.HotkeyAction.SOUNDPACK_ACTIVATE) {
+                    for (com.ts3client.sound.SoundPack pack : sounds.availablePacks()) out.add(pack.name());
+                }
+            }
+            case CHANNEL -> {
+                if (selected != null && selected.isConnected()) {
+                    out.addAll(selected.channelPaths());
+                }
+            }
+            default -> {
+            }
+        }
+        return out;
+    }
+
+    /** Repaints the chrome after a hotkey changed the local client's state. */
+    void refreshAfterHotkey() {
+        updateToolbar();
+        updateTray();
+        refreshTabs();
     }
 
     // ---- actions ----
@@ -627,6 +753,7 @@ public final class MainFrame extends JFrame implements ServerTabPane.Listener {
             tab.shutdown();
         }
         soundPlayer.shutdown();
+        hotkeys.dispose();
         if (tray != null) tray.dispose();
     }
 
@@ -646,7 +773,7 @@ public final class MainFrame extends JFrame implements ServerTabPane.Listener {
         SettingsDialog dlg = new SettingsDialog(this, settings,
                 micTab == null ? null : micTab.connection().getMicrophone(),
                 selected == null ? null : selected.connection().getPlayback(),
-                sounds,
+                sounds, hotkeys,
                 this::applyOutputSettingsToAllTabs);
         dlg.setVisible(true);
     }

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

@@ -15,6 +15,8 @@ import javax.swing.JComponent;
 import javax.swing.JOptionPane;
 import javax.swing.JSplitPane;
 import javax.swing.SwingUtilities;
+import java.util.ArrayList;
+import java.util.List;
 import java.awt.Component;
 
 /**
@@ -319,6 +321,33 @@ final class ServerTab implements ConnectionListener, ServerTreePanel.Actions {
         return c != null ? c.nickname : "Client " + clientId;
     }
 
+    /** Joins the channel at a "/"-separated path, as the hotkey action names it. */
+    void joinChannelPath(String path) {
+        if (!conn.isConnected() || path == null || path.isBlank()) return;
+        ChannelNode target = conn.getModel().findChannelByPath(path);
+        if (target != null) conn.joinChannel(target.id, null);
+    }
+
+    /** Every channel of this server as a "/"-separated path, in the tree's own order. */
+    List<String> channelPaths() {
+        List<String> out = new ArrayList<>();
+        if (!conn.isConnected()) return out;
+        for (ChannelNode root : conn.getModel().buildTree()) collectPaths(root, out);
+        return out;
+    }
+
+    private void collectPaths(ChannelNode channel, List<String> out) {
+        out.add(conn.getModel().channelPath(channel.id));
+        for (ChannelNode child : channel.children) collectPaths(child, out);
+    }
+
+    /** The channel we are in, or null when not connected. */
+    ChannelNode currentChannel() {
+        if (!conn.isConnected()) return null;
+        ClientEntry self = conn.getModel().getClient(conn.getSelfClientId());
+        return self == null ? null : conn.getModel().getChannel(self.channelId);
+    }
+
     // ---- ServerTreePanel.Actions ----
 
     @Override

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

@@ -6,6 +6,8 @@ import com.ts3client.audio.VoiceOutput;
 import com.ts3client.audio.desktop.AudioCapture;
 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;
@@ -30,8 +32,6 @@ import java.awt.GridBagConstraints;
 import java.awt.GridBagLayout;
 import java.awt.Insets;
 import java.awt.Rectangle;
-import java.awt.event.KeyAdapter;
-import java.awt.event.KeyEvent;
 import java.util.List;
 
 /**
@@ -53,11 +53,13 @@ public final class SettingsDialog extends JDialog {
     private final VoiceInput liveMic;
     private final VoiceOutput livePlayback;
     private final SoundNotifier sounds;
+    private final HotkeyService hotkeys;
     private final Runnable onApply;
 
     private NotificationsPanel notificationsPanel;
     private IconPackPanel iconPackPanel;
     private ClientVersionPanel clientVersionPanel;
+    private HotkeysPanel hotkeysPanel;
 
     private JComboBox<AudioDevices.Device> inputCombo;
     private JComboBox<AudioDevices.Device> outputCombo;
@@ -79,7 +81,6 @@ public final class SettingsDialog extends JDialog {
     private JLabel speechLabel;
     private LevelMeter meter;
     private JButton pttKeyButton;
-    private int pttKey;
     private JSlider bitrateSlider;
     private JLabel bitrateLabel;
     private JSlider complexitySlider;
@@ -92,14 +93,14 @@ public final class SettingsDialog extends JDialog {
 
     public SettingsDialog(Frame owner, Settings settings,
                           VoiceInput liveMic, VoiceOutput livePlayback,
-                          SoundNotifier sounds, Runnable onApply) {
+                          SoundNotifier sounds, HotkeyService hotkeys, Runnable onApply) {
         super(owner, "Options", true);
         this.settings = settings;
         this.liveMic = liveMic;
         this.livePlayback = livePlayback;
         this.sounds = sounds;
         this.onApply = onApply;
-        this.pttKey = settings.pushToTalkKey;
+        this.hotkeys = hotkeys;
 
         JTabbedPane tabs = new JTabbedPane();
         tabs.addTab("Playback / Capture", scrollable(buildDevicesTab()));
@@ -108,6 +109,8 @@ public final class SettingsDialog extends JDialog {
         tabs.addTab("Notifications", notificationsPanel);
         iconPackPanel = new IconPackPanel(settings);
         tabs.addTab("Design", iconPackPanel);
+        hotkeysPanel = new HotkeysPanel(hotkeys);
+        tabs.addTab("Hotkeys", hotkeysPanel);
         clientVersionPanel = new ClientVersionPanel(settings);
         tabs.addTab("Client Version", scrollable(clientVersionPanel));
 
@@ -313,9 +316,10 @@ public final class SettingsDialog extends JDialog {
         });
         addRow(p, c, row++, new JLabel("Speech threshold:"), sliderWithLabel(speechSlider, speechLabel));
 
-        pttKeyButton = new JButton(keyName(pttKey));
+        pttKeyButton = new JButton(pushToTalkHotkeyText());
-        pttKeyButton.addActionListener(e -> capturePttKey());
+        pttKeyButton.setToolTipText("Push-to-talk is a global hotkey; this opens its binding");
-        addRow(p, c, row++, new JLabel("Push-to-talk key:"), pttKeyButton);
+        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);
         c.gridx = 0;
@@ -511,23 +515,31 @@ public final class SettingsDialog extends JDialog {
         if (liveMic != null) liveMic.setOpusParameters(currentOpusParameters());
     }
 
-    private void capturePttKey() {
+    private String pushToTalkHotkeyText() {
-        pttKeyButton.setText("Press a key…");
+        Hotkey ptt = hotkeys.find(HotkeyAction.PTT_ACTIVATE);
-        pttKeyButton.requestFocusInWindow();
+        return ptt == null ? "No hotkey assigned" : hotkeys.display(ptt.combo);
-        KeyAdapter ka = new KeyAdapter() {
-            @Override
-            public void keyPressed(KeyEvent e) {
-                pttKey = e.getKeyCode();
-                pttKeyButton.setText(keyName(pttKey));
-                pttKeyButton.removeKeyListener(this);
-            }
-        };
-        pttKeyButton.addKeyListener(ka);
     }
 
-    private static String keyName(int code) {
+    /**
-        String t = KeyEvent.getKeyText(code);
+     * Push-to-talk is an ordinary hotkey, so this shortcut edits that binding — adding
-        return (t == null || t.isEmpty()) ? ("Key " + code) : t;
+     * 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();
     }
 
     private void apply() {
@@ -546,7 +558,6 @@ public final class SettingsDialog extends JDialog {
         settings.vadThresholdDb = thresholdSlider.getValue();
         settings.speechThreshold = speechSlider.getValue() / 100.0;
         settings.vadOverPtt = vadOverPttCheck.isSelected();
-        settings.pushToTalkKey = pttKey;
         settings.bitrate = bitrateSlider.getValue() * 1000;
         settings.complexity = complexitySlider.getValue();
         settings.vbr = vbrCheck.isSelected();
@@ -555,6 +566,7 @@ public final class SettingsDialog extends JDialog {
         notificationsPanel.apply();
         iconPackPanel.apply();
         clientVersionPanel.apply();
+        hotkeysPanel.apply();
         settings.save();
 
         if (liveMic != null) {