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
tree.addMouseTrackListener( new MouseTrackAdapter( ) {
			public void mouseHover( MouseEvent event )
			{
				Widget widget = event.widget;
				if ( widget == tree )
				{
					Point pt = new Point( event.x, event.y );
					TreeItem item = tree.getItem( pt );
					if ( item == null || item.getData( ) == null )
					{
						tree.setToolTipText( null );
					}
					else
					{
						tree.setToolTipText( getTooltip( item.getData( ) ) );
					}
				}
			}
		} );
		
		SessionHandleAdapter.getInstance( )
				.getMediator( )
				.addColleague( getSelectionSynchronizer( ) );
	}
	protected void addDragAndDropListener( )
	{
		
		int ops = DND.DROP_MOVE | DND.DROP_COPY;
		Transfer[] transfers = new Transfer[]{
			TemplateTransfer.getInstance( )