Expose announced channel types characters.

src/net/java/sip/communicator/impl/protocol/irc/ChatRoomIrcImpl.java

@@ -1067,11 +1067,8 @@ public void fireLocalUserRoleChangedEvent(
      */
     public boolean isPrivate()
     {
-        // TODO Since we cannot change the chat room name/identifier maybe we
-        // should compute this upon construction and save the result, instead of
-        // doing a string operation every time the method is called.
-        return !this.chatRoomName.startsWith("#")
-            && !this.chatRoomName.startsWith("&");
+        return !this.parentProvider.getIrcStack().getChannelTypes()
+            .contains(this.chatRoomName.charAt(0));
     }
 
     /**

src/net/java/sip/communicator/impl/protocol/irc/IrcStack.java

@@ -318,6 +318,18 @@ public void dispose()
     {
         disconnect();
     }
+    
+    /**
+     * Get a set of channel type indicators.
+     * 
+     * @return returns set of channel type indicators.
+     */
+    public Set<Character> getChannelTypes()
+    {
+        if (!isConnected())
+            throw new IllegalStateException("not connected to IRC server");
+        return this.connectionState.getServerOptions().getChanTypes();
+    }
 
     /**
      * Get the nick name of the user.