Bug 130094 [regression] cannot edit group in Cheat Sheets
steps to reproduce: - create a report using Grouped Listing template - switch to Cheat Sheets, start/restart the tutorial - follow the steps to 1) create data source; 2) create data set; 3) bind the data to the table; and 4) edit the group expected behavior: - group dialog should be displayed actual behavior: - error message displayed. please refer to the attached image for detail
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/views/DefaultNodeProvider.java
{
			return false;
		}
		if ( position == InsertAction.CURRENT )
		{
			slotHandle.add( elementHandle );
		}
		else
		{
			int pos = DNDUtil.calculateNextPosition( model,
					DNDUtil.handleValidateTargetCanContain( model,
							elementHandle,
							true ) );
			if ( pos > 0 && position == InsertAction.ABOVE )
			{
				pos--;
			}
			if ( pos == -1 )
			{
				slotHandle.add( elementHandle );
			}
			else
			{
				slotHandle.add( elementHandle, pos );
			}
		}
		if ( elementHandle instanceof ExtendedItemHandle )
		{
			if ( !ElementProcessorFactory.createProcessor( elementHandle )
					.editElement( elementHandle ) )