/**
* When a tab is highlighted sets an indicator of the number of unread messages in this tab.
*
* @param tabIndex the index of the tab
* @param unreadMessageNumber the number of messages that the user hasn't yet read
*/
public void highlightTab(int tabIndex, int unreadMessageNumber) {
Component c = this.getComponentAt(tabIndex);
String tabTitle = "";
if (c instanceof ChatPanel) tabTitle = ((ChatPanel) c).getChatSession().getChatName();
else if (c instanceof CallPanel) tabTitle = ((CallPanel) c).getCallTitle();
if (unreadMessageNumber > 0) tabTitle = "(" + unreadMessageNumber + ") " + tabTitle;
this.setTitleAt(tabIndex, tabTitle);
super.highlightTab(tabIndex);
}
