Bug 124600 delete Grid Column causes NPE thrown out in error log
steps to reproduce: - insert a 3*3 grid - delete grid columns one by one expected behavior: - these operations should completed without any error. actual behavior: - after i deleted the 3rd column, NPE was thrown out in error log.
UI/org.eclipse.birt.report.designer.core/src/org/eclipse/birt/report/designer/util/DNDUtil.java
}
			else if ( transferData instanceof EmbeddedImageHandle )
			{
				return targetObj instanceof EmbeddedImageNode
						? CONTAIN_THIS
						: CONTAIN_NO;
			}
			else
			{
				return CONTAIN_NO;
			}
		}
	}
	public static boolean handleValidateTargetCanContainStructure(
			Object targetObj, IStructure transferData )
	{
		if ( targetObj instanceof EmbeddedImageNode )
		{
			targetObj = ( (EmbeddedImageNode) targetObj )
					.getReportDesignHandle( );
		}
		if ( transferData instanceof EmbeddedImage
				&& targetObj instanceof ModuleHandle )
		{
			
			
			return true;
		}
		return false;
	}