Bug 153517 The DND of embeddedimage from lib explorer to outline view doesn'w work when the report in outline has used the lib
If the report in outline view has used a library, then drag and drop an embeddedimage of the used library from lib explorer to outline view doesn't work. The DND drop nothing onto the embedded image of the target report. Steps to reproduce: 1.Create a library with an embeddediamge and export to resource folder; 2.Create a new report design; 3.Drag the embeddedimage of lib from lib explorer to outline view;
UI/org.eclipse.birt.report.designer.core/src/org/eclipse/birt/report/designer/util/DNDUtil.java
return;
		}
		container = unwrapToModel( container );
		if ( container instanceof DesignElementHandle )
		{
			( (DesignElementHandle) container ).addElement( handle,
					DEUtil.getDefaultSlotID( container ) );
		}
		else if ( container instanceof SlotHandle )
		{
			( (SlotHandle) container ).add( handle );
		}
	}
	/**
	 * Validates target elements can contain transfer data
	 * 
	 * @param targetObj
	 *            target elements
	 * @param transferData
	 *            transfer data,single object or array are permitted
	 * @return if target elements can be dropped
	 */
	public static boolean handleValidateTargetCanContain( Object targetObj,
			Object transferData )
	{
		return handleValidateTargetCanContain( targetObj, transferData, true ) != CONTAIN_NO;
	}
	/**
	 * Validates target elements can contain transfer data.
	 * <p>