Bug 165677 folder is not opened by double click
Data explorer pane contains following tree: + Data Sources - Postgres + Data Sets - Header DS - Chart DS + Report Parameters - Id It is common then if you double click on menu item, that is folder for other menu items (submenu), that it is opened. But in BIRT I can click to Data Sources (Data Sets, Report Params) as many times as I want but it never opens the submenu. In other words, when I doubleclick Data Sets, I want to open it and see which data sets are defined.
UI/org.eclipse.birt.report.designer.ui.editors/src/org/eclipse/birt/report/designer/internal/ui/views/outline/DesignerOutlinePage.java
}
	/**
	 * Refreshes the focused element and its container. Applies the visitor to
	 * the focused design element
	 * 
	 * @param focus
	 *            the focus element
	 * @param ev
	 *            the event
	 */
	public void elementChanged( DesignElementHandle focus, NotificationEvent ev )
	{
		if ( getTreeViewer( ).getTree( ).isDisposed( ) )
		{
			return;
		}
		getTreeViewer( ).refresh( );
		expandNodeAfterCreation( ev );
		
	}
	protected void expandNodeAfterCreation( NotificationEvent ev )
	{
		if ( ev instanceof ContentEvent
				&& ev.getEventType( ) == NotificationEvent.CONTENT_EVENT )
		{
			IDesignElement element = ( (ContentEvent) ev ).getContent( );
			if ( element != null )
			{
				getTreeViewer( ).expandToLevel( element.getHandle( getRoot( ).getModule( ) ),
						0 );