Bug 192171 Layout still display css style from library after removing library.[01]
Description: Layout still display css style from library after removing library. Build number:2.2.0.v20070612 Steps to reproduce: 1. Add a css file in Library Explorer 2. New a library file. 3. Use css file in library default theme. 4. New a report and use the library. 5. Insert a label and apply the style from library. 6. Remove the library in report Outline. Expected result: Style effect disappears from label in Layout. Actual result: Label in Layout still displays the style effect. Error log:N/A
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/core/ReferenceableElementAdapter.java
if ( IDesignElementModel.EXTENDS_PROP.equalsIgnoreCase( ref
					.getPropertyName( ) ) )
				ev.setDeliveryPath( NotificationEvent.EXTENDS_EVENT );
			else if ( IStyledElementModel.STYLE_PROP.equalsIgnoreCase( ref
					.getPropertyName( ) ) )
				ev.setDeliveryPath( NotificationEvent.STYLE_CLIENT );
			else
				ev.setDeliveryPath( NotificationEvent.ELEMENT_CLIENT );
			target.broadcast( ev, module );
		}
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.core.IReferencableElement#updateClientReferences()
	 */
	public void updateClientReferences( )
	{
		
		Iterator backRefIter = new ArrayList( clients ).iterator( );
		while ( backRefIter.hasNext( ) )
		{
			BackRef ref = (BackRef) backRefIter.next( );
			DesignElement client = ref.element;
			Module root = client.getRoot( );
			CachedMemberRef memberRef = ref.getCachedMemberRef( );
			Object value = null;
			if ( memberRef != null )
			{
				value = client