// demos
protected IDocumentGroup createDocumentGroup() {
IDocumentGroup group = super.createDocumentGroup();
if (group instanceof JideTabbedPane) {
JideTabbedPane tabbedPane = (JideTabbedPane)group;
tabbedPane.addMouseListener(tabDoubleClickListener);
//((JideTabbedPaneUI) ((JideTabbedPane) group).getUI()).getTabPanel().
// addMouseListener(tabDoubleClickListener);
}
return group;
}