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 boolean isMutilSelection( Object multiSelection )
	{
		return multiSelection != null && ( multiSelection == Object.class 
				
				|| multiSelection == DesignElementHandle.class
				
				|| isRootElementHandleClass( multiSelection )
		
				|| multiSelection == ReportItemHandle.class
				
				
				);
	}
	private boolean isRootElementHandleClass( Object obj )
	{
		return obj == ReportDesignHandle.class || obj == LibraryHandle.class;
	}
	/**
	 * @param menuManager
	 */
	private void createInsertGroupMenu( IMenuManager menuManager,
			String group_name )
	{
		if ( getFirstElement( ) instanceof CellHandle
				|| getFirstElement( ) instanceof RowHandle )
		{
			RowHandle row;
			if ( getFirstElement( ) instanceof CellHandle )
			{