Bug 120218 Right click menu option to apply theme.
We should support the following right click menu. -- User right clicks int he report design layout area. -- The following menu items needs to be supported Theme --> Apply Theme -->Theme1 -->Theme2 ( similar to Apply style menu option )
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/editors/schematic/providers/SchematicContextMenuProvider.java
menuManager.appendToGroup( GEFActionConstants.GROUP_EDIT,
						action );
			}
			createStyleMenu( menuManager, GEFActionConstants.GROUP_REST );
			if ( Policy.TRACING_MENU_SHOW )
			{
				System.out.println( "Menu(for Editor) >> Shows for multi-selcetion." ); 
			}
		}
		
		else if ( firstSelectedElement instanceof DesignElementHandle )
		{
			menuManager.appendToGroup( GEFActionConstants.GROUP_UNDO,
					getAction( ActionFactory.UNDO.getId( ) ) );
			menuManager.appendToGroup( GEFActionConstants.GROUP_UNDO,
					getAction( ActionFactory.REDO.getId( ) ) );
			menuManager.appendToGroup( GEFActionConstants.GROUP_COPY,
					new CutAction( selectedElements ) );
			menuManager.appendToGroup( GEFActionConstants.GROUP_COPY,
					new CopyAction( selectedElements ) );
			menuManager.appendToGroup( GEFActionConstants.GROUP_COPY,
					new PasteAction( selectedElements ) );
			createStyleMenu( menuManager, GEFActionConstants.GROUP_REST );
			if ( ( (IStructuredSelection) getSelection( ) ).size( ) == 1 )
			{
				Object element = ( (IStructuredSelection) getSelection( ) ).getFirstElement( );
				if ( element instanceof LabelEditPart
						|| element instanceof ImageEditPart )
				{
					IAction action = getAction( GEFActionConstants.DIRECT_EDIT );