Bug 142928 Item from library is changed to a report design item after revert to report item
Details: Item from library is changed to a report design item after revert to report item. Setp: 1.New a template. 2.Use a libary contain a label. 3.Drop the label from library explorer into layout. 4.Change the label to template item. 5.Revert the template item to report item. Actual result: The label is become a report item, but a item from library. Please see the attach image. Exception result: The lable is revert a item from library.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/views/DefaultNodeProvider.java
public String getNodeTooltip( Object model )
	{
		return null;
	}
	/**
	 * Gets the icon name for the given model. The default implementation does
	 * nothing.The subclasses may override it if necessary
	 * 
	 * @param model
	 *            the model of the node
	 * 
	 * @return Returns the icon name for the model,or null if no proper one
	 *         available for the given model
	 */
	public String getIconName( Object model )
	{
		return null;
	}
	protected Object[] getChildrenBySlotHandle( SlotHandle slotHandle )
	{
		ArrayList list = new ArrayList( );
		Iterator itor = slotHandle.iterator( );
		while ( itor.hasNext( ) )
		{
			Object obj = itor.next( );
			if ( obj instanceof DesignElementHandle )
			{
				DesignElementHandle eleHandle = (DesignElementHandle) obj;
				list.add( eleHandle );
			}