Bug 192347 [acceptance]Theme cannot be deleted[01]
Description: [acceptance]Theme cannot be deleted Build number:2.2.0.v20070613 Steps to reproduce: 1. New a library. 2. New a theme and delete it. Expected result: Theme can be deleted Actual result: Delete key doesn't work and no delete item in context menu. Error log:n/a
UI/org.eclipse.birt.report.designer.core/src/org/eclipse/birt/report/designer/util/DNDUtil.java
if ( isNew )
			{
				return ( (GridHandle) parent ).canInsertAndPasteColumn( transferData,
						columnNumber );
			}
			return ( (GridHandle) parent ).canPasteColumn( transferData,
					columnNumber,
					true );
		}
		return false;
	}
	protected static int handleValidateTargetCanContainByContainer(
			Object targetObj, DesignElementHandle childHandle,
			boolean validateContainer )
	{
		targetObj = unwrapToModel( targetObj );
		if ( targetObj instanceof DesignElementHandle )
		{
			return handleValidateTargetCanContainElementHandle( (DesignElementHandle) targetObj,
					childHandle,
					validateContainer );
		}
		if ( targetObj instanceof SlotHandle )
		{
			SlotHandle targetHandle = (SlotHandle) targetObj;