Bug 212984 Disable Dimension or Level drag into outline
Description: The levels are not auto-outspread when drag the dimension from Data explorer to Outline Build number: 2.3.0.v20071214 Steps to reproduce: 1, New a cube with multiple levels in one dimension 2, New a crosstab 3, Drag the dimension from cube to crosstab's column area in Outline Expected result: The levels are auto-outspread. Actual result: The levels are not auto-outspread. Error log:
xtab/org.eclipse.birt.report.item.crosstab.ui/src/org/eclipse/birt/report/item/crosstab/internal/ui/dnd/DimensionHandleDropAdapter.java
{
	public int canDrop( Object transfer, Object target, int operation,
			DNDLocation location )
	{
		if ( !isDimensionHandle( transfer ) )
		{
			return DNDService.LOGIC_UNKNOW;
		}
		if ( target instanceof EditPart )
		{
			EditPart editPart = (EditPart) target;
			if ( editPart.getModel( ) instanceof IVirtualValidator )
			{
				if ( ( (IVirtualValidator) editPart.getModel( ) ).handleValidate( transfer ) )
					return DNDService.LOGIC_TRUE;
				else
					return DNDService.LOGIC_FALSE;
			}
		}
		else if ( target instanceof PropertyHandle )
		{
			if ( ( (PropertyHandle) target ).getPropertyDefn( )
					.getName( )
					.equals( ICrosstabReportItemConstants.COLUMNS_PROP )
					|| ( (PropertyHandle) target ).getPropertyDefn( )
							.getName( )
							.equals( ICrosstabReportItemConstants.ROWS_PROP ) )
			{