Fixes issue 3327: TopicBar uses the wrong font-colour the first time it is edited if no topic is set

Fixes issue 3326: TopicBar shouldn't reset the topic if someone else changes it whilst it is being edited.

Change-Id: I5ca1535dc9edbc9eac237f83c69efc3b910c3013
Reviewed-on: http://gerrit.dmdirc.com/248
Tested-by: Gregory Holmes <greboid@dmdirc.com>
Reviewed-by: Chris Smith <chris@dmdirc.com>
Tested-by: Chris Smith <chris@dmdirc.com>

src/com/dmdirc/addons/ui_swing/components/TopicBar.java

@@ -128,6 +128,9 @@ public class TopicBar extends JComponent implements ActionListener,
         //}
         ((DefaultStyledDocument) topicText.getDocument()).setDocumentFilter(
                 new NewlinesDocumentFilter());
+        setAttributes();
+        ((DefaultStyledDocument) topicText.getDocument()).setCharacterAttributes(
+                0, Integer.MAX_VALUE, as, true);
 
         topicText.getActionMap().put("paste-from-clipboard",
                 new NoNewlinesPasteAction());
@@ -219,6 +222,9 @@ public class TopicBar extends JComponent implements ActionListener,
      * Topic has changed, update topic.
      */
     private void topicChanged() {
+        if (topicText.isEditable()) {
+            return;
+        }
         topicText.setText("");
         setAttributes();
         ((DefaultStyledDocument) topicText.getDocument()).setCharacterAttributes(