Bug 162181 [Smoke] Can't drag datasource and data set from library to the report
The test build is on eclipse 3.2.1 Step to reproduce: 1. new a library and create datasource and dataset in it 2. new a report 3. drag the datasource and dataset to the outline view or data explorer Actual result: It take no effect. Excepted result: It can work.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/dnd/DesignElementDropAdapter.java
}
		else if ( getCurrentOperation( ) == DND.DROP_COPY )
		{
			if ( Policy.TRACING_DND_DRAG )
			{
				System.out.println( "DND >> Dropped. Operation: Move, Target: " 
						+ getCurrentTarget( ) );
			}
			return copyData( data, getCurrentTarget( ) );
		}
		return false;
	}
	/**
	 * @see ViewerDropAdapter#validateDrop(Object, int, TransferData)
	 */
	public boolean validateDrop( Object target, int op, TransferData type )
	{
		return TemplateTransfer.getInstance( ).isSupportedType( type );
	}
	/**
	 * Validates target elements can be dropped
	 * 
	 * @param target
	 *            target elements
	 * @return if target elements can be dropped
	 */
	protected abstract boolean validateTarget( Object target );
	/**
	 * Validates target elements can contain transfer data data
	 *