reverts r5030 which breaks MacOS

src/net/java/sip/communicator/impl/gui/main/chat/ChatWindow.java

@@ -50,8 +50,7 @@ public class ChatWindow
     extends SIPCommFrame
     implements  ExportedWindow,
                 PluginComponentListener,
-                WindowFocusListener,
-                WindowListener
+                WindowFocusListener
 {
     private final Logger logger = Logger.getLogger(ChatWindow.class);
 
@@ -91,11 +90,6 @@ public ChatWindow()
         }
 
         this.addWindowFocusListener(this);
-        this.addWindowListener(this);
-
-        // prevent focus stealing at opening
-        // the window is made focusable again in windowOpened()
-        this.setFocusableWindowState(false);
 
         this.setHierarchicallyOpaque(false);
 
@@ -405,6 +399,8 @@ public void setCurrentChatPanel(ChatPanel chatPanel)
             mainToolBar.enableInviteButton(false);
 
         mainToolBar.changeHistoryButtonsState(chatPanel);
+
+        chatPanel.requestFocusInWriteArea();
     }
 
     /**
@@ -1170,37 +1166,11 @@ public void setParams(Object[] windowParams) {}
     public void windowGainedFocus(WindowEvent evt)
     {
         this.removeNonReadChatState();
-        this.getCurrentChatPanel().requestFocusInWriteArea();
     }
 
     public void windowLostFocus(WindowEvent arg0)
     {}
 
-    public void windowOpened(WindowEvent evt)
-    {
-        // the window was previously set non focusable
-        // to prevent focus stealing at opening
-        this.setFocusableWindowState(true);
-    }
-
-    public void windowActivated(WindowEvent evt)
-    {}
-
-    public void windowDeactivated(WindowEvent evt)
-    {}
-
-    public void windowClosing(WindowEvent evt)
-    {}
-
-    public void windowClosed(WindowEvent evt)
-    {}
-
-    public void windowIconified(WindowEvent evt)
-    {}
-
-    public void windowDeiconified(WindowEvent evt)
-    {}
-
     /**
      * Removes the non read state of the currently selected chat session. This
      * will result in removal of all icons representing the non read state (like