Bug 124599 Shortcut delete and menu delete act different in table column.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/editors/parts/GraphicalEditorWithFlyoutPalette.java
splitter = new FlyoutPaletteComposite( parent,
				SWT.NONE,
				getSite( ).getPage( ),
				getPaletteViewerProvider( ),
				getPalettePreferences( ) );
		super.createPartControl( splitter );
		Control ctrl = getGraphicalControl( );
		splitter.setGraphicalControl( ctrl );
		
		
		
		
		if ( page != null )
		{
			splitter.setExternalViewer( page.getPaletteViewer( ) );
			page = null;
		}
	}
	/**
	 * @see org.eclipse.ui.IWorkbenchPart#dispose()
	 */
	public void dispose( )
	{
		
		SessionHandleAdapter.getInstance( )
				.getMediator( )
				.removeColleague( this );