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
*/
	private void createEditGroupMenu( IMenuManager menuManager,
			String group_name )
	{
		
		if ( getFirstElement( ) instanceof RowHandle )
		{
			DesignElementHandle container = ( (RowHandle) getFirstElement( ) ).getContainer( );
			if ( container instanceof TableGroupHandle )
			{
				Action action = new EditGroupAction( null,
						(TableGroupHandle) container );
				action.setText( EDIT_GROUP_MENU_ITEM_TEXT );
				menuManager.appendToGroup( group_name, action );
				return;
			}
		}
		if ( getFirstElement( ) instanceof SlotHandle )
		{
			DesignElementHandle container = ( (SlotHandle) getFirstElement( ) ).getElementHandle( );
			if ( container instanceof ListGroupHandle )
			{
				Action action = new EditGroupAction( null,
						(ListGroupHandle) container );
				action.setText( EDIT_GROUP_MENU_ITEM_TEXT );
				menuManager.appendToGroup( group_name, action );
				return;
			}
		}
		MenuManager subMenu = new MenuManager( EDIT_GROUP_MENU_ITEM_TEXT );