Bug 179688 Dimension should not be able to be deleted through Context Menu [1102]
Description: Dimension should not be able to be deleted through Context Menu. Build number: 2.2.0.v20070328-0630 Steps to reproduce: 1. New a Cross tab, drag Group to column. 2. Select the Group and right click to choose "Delete" in the context menu. Expected result: Dimension should not be able to be deleted through Context Menu. Actual result: Dimension can be deleted through Context Menu. Error log: N/A
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/editors/schematic/providers/SchematicContextMenuProvider.java
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 )
				{
					if ( element instanceof DataEditPart ){
						IAction action = getAction( ChangeDataColumnPartAction.ID );
						menuManager.appendToGroup( GEFActionConstants.GROUP_EDIT,
								action );