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Add browser-style drag-to-reorder for chat and server tabs

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Dragging a tab shows animated snapshots on the glass pane and swaps
with whichever neighbour it reaches the midpoint of; the real tab
model is only touched once, on release, so an in-flight mouse grab
never gets pulled out from under a rebuilt tab component.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
This commit is contained in:
ericek111
2026-08-18 12:49:26 +00:00
parent 71084ea309
commit de02f88f1c
3 changed files with 323 additions and 0 deletions
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20
ts3-client/swing/src/main/java/com/ts3client/ui/ChatPanel.java
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@@ -67,6 +67,8 @@ public final class ChatPanel extends JPanel {
/** Static-content tabs (e.g. a moved-out description), keyed by caller-chosen id. */
private final Map<String, Tab> noteTabs = new LinkedHashMap<>();
private final TabDragReorder dragReorder = new TabDragReorder(tabs, this::moveTab);
private SendHandler sendHandler;
private LinkHandler linkHandler;
@@ -83,6 +85,7 @@ public final class ChatPanel extends JPanel {
if (t != null) t.setUnread(false);
});
tabs.addMouseWheelListener(this::onWheel);
dragReorder.attach(tabs);
add(tabs, BorderLayout.CENTER);
JPanel bottom = new JPanel(new BorderLayout(4, 0));
@@ -235,6 +238,21 @@ public final class ChatPanel extends JPanel {
tabs.remove(tab.scroll);
}
/** Drags a tab from one position to another, keeping the current selection on screen. */
private void moveTab(int from, int to) {
if (from < 0 || to < 0 || from >= tabs.getTabCount() || to >= tabs.getTabCount() || from == to) return;
Component content = tabs.getComponentAt(from);
String title = tabs.getTitleAt(from);
Icon icon = tabs.getIconAt(from);
String tip = tabs.getToolTipTextAt(from);
Component header = tabs.getTabComponentAt(from);
boolean wasSelected = tabs.getSelectedIndex() == from;
tabs.removeTabAt(from);
tabs.insertTab(title, icon, content, tip, to);
tabs.setTabComponentAt(to, header);
if (wasSelected) tabs.setSelectedIndex(to);
}
private void onWheel(MouseWheelEvent e) {
Component content = tabs.getSelectedComponent();
if (content != null && content.getBounds().contains(e.getPoint())) return;
@@ -339,6 +357,8 @@ public final class ChatPanel extends JPanel {
titleLabel = new JLabel(title, icon, JLabel.LEADING);
titleLabel.setFont(Theme.UI_FONT);
p.add(titleLabel);
dragReorder.attach(p);
dragReorder.attach(titleLabel);
if (closable) {
JLabel close = new JLabel("×");
close.setFont(Theme.UI_BOLD);