Let a chat tab grow to fit its name

Its header was pinned to the width it was built with, clipping longer names.

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

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

@@ -58,6 +58,9 @@ public final class ChatPanel extends JPanel {
     private final JTextField input = new JTextField();
     private final SimpleDateFormat time = new SimpleDateFormat("HH:mm:ss");
 
+    /** Tab strip height, so a tab with no icon still lines up with the others. */
+    private static final int HEADER_HEIGHT = 20;
+
     private static final String NO_SERVER = "Server";
     private static final String NO_CHANNEL = "Channel";
 
@@ -350,7 +353,15 @@ public final class ChatPanel extends JPanel {
         }
 
         Component header(boolean closable) {
-            JPanel p = new JPanel(new FlowLayout(FlowLayout.LEFT, 2, 0));
+            // Only the height is pinned: a fixed width would freeze the tab at the width of
+            // whatever name it was built with, clipping longer ones (and the bold unread font).
+            JPanel p = new JPanel(new FlowLayout(FlowLayout.LEFT, 2, 0)) {
+                @Override
+                public Dimension getPreferredSize() {
+                    Dimension d = super.getPreferredSize();
+                    return new Dimension(d.width, Math.max(d.height, HEADER_HEIGHT));
+                }
+            };
             p.setOpaque(false);
             titleLabel = new JLabel(title, icon, JLabel.LEADING);
             titleLabel.setFont(Theme.uiFont());
@@ -372,7 +383,6 @@ public final class ChatPanel extends JPanel {
                 });
                 p.add(close);
             }
-            p.setPreferredSize(new Dimension(p.getPreferredSize().width, 20));
             return p;
         }
 
@@ -382,7 +392,11 @@ public final class ChatPanel extends JPanel {
             this.title = title;
             int index = tabs.indexOfComponent(scroll);
             if (index >= 0) tabs.setTitleAt(index, title);
-            if (titleLabel != null) titleLabel.setText(title);
+            if (titleLabel == null) return;
+            titleLabel.setText(title);
+            // The strip lays its tabs out itself; it has to re-measure this one.
+            tabs.revalidate();
+            tabs.repaint();
         }
 
         void setUnread(boolean unread) {