fix chat window refresh

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

@@ -195,7 +195,7 @@ private void addChatTab(ChatPanel chatPanel)
         PresenceStatus status = chatPanel.getChatStatus();
         
         if (getCurrentChatPanel() == null)
-        {   
+        {
             this.getContentPane().add(chatPanel, BorderLayout.CENTER);            
         }
         else
@@ -259,10 +259,8 @@ public void removeChat(ChatPanel chatPanel)
         if(getChatTabCount() == 0)
         {
             this.getContentPane().remove(chatPanel);
-            this.getContentPane().validate();
-            this.getContentPane().repaint();
             
-            this.setVisible(false);
+            this.dispose();
             
             return;
         }
@@ -324,7 +322,7 @@ public void removeAllChats()
         {
             this.chatTabbedPane.removeAll();
             
-            this.getContentPane().remove(chatTabbedPane);        
+            this.getContentPane().remove(chatTabbedPane);
         }
         else
         {

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

@@ -210,7 +210,7 @@ public void closeWindow()
                 if (answer == JOptionPane.OK_OPTION)
                 {
                     chatWindow.removeAllChats();
-                    chatWindow.setVisible(false);
+                    chatWindow.dispose();
 
                     synchronized (chats)
                     {
@@ -231,7 +231,7 @@ else if (System.currentTimeMillis() - chatWindow
                 if (answer == JOptionPane.OK_OPTION)
                 {
                     chatWindow.removeAllChats();
-                    chatWindow.setVisible(false);
+                    chatWindow.dispose();
 
                     synchronized (chats)
                     {
@@ -242,7 +242,7 @@ else if (System.currentTimeMillis() - chatWindow
             else
             {
                 chatWindow.removeAllChats();
-                chatWindow.setVisible(false);
+                chatWindow.dispose();
 
                 synchronized (chats)
                 {