Examples of org.eclipse.sapphire.ui.diagram.layout.DiagramLayoutPersistenceService

org.eclipse.sapphire.ui.diagram.layout.DiagramLayoutPersistenceService

Responsible for persisting layout of the diagram, such a location and size of nodes, connection bend points, etc.

Unlike other services, DiagramLayoutPersistenceService is not defined by methods that must be implemented, but rather by its expected behavior.

During service initialization, the implementation is expected to load layout information and transfer it to diagram parts using API such as DiagramNodePart.setNodeBounds().
After initialization, the implementation is expected to listen for changes to diagram parts and persist layout information. Persistence can happen immediately or be deferred until the save event is received.
If implementation defers layout persistence until save, it is expected to implement dirty() method and to issue DirtyStateEvent when this state changes.

@author Shenxue Zhou @author Konstantin Komissarchik

        // add bendpoint if collision if the connection part doesn't have any bend points.
        // But we still route the connection for the purpose of calculating next "fan position" correctly.
        // See Bug 374793 - Additional bend points added to connection when visible-when condition on nodes change
                
        Point bendPoint = getConfigurationManager().getConnectionRouter().route(connectionModel);
        DiagramLayoutPersistenceService persistenceService = getSapphirePart().service(DiagramLayoutPersistenceService.class);
            if (persistenceService.read(connPart) == null && bendPoint != null && connPart.getBendpoints().isEmpty()) 
            {
              List<org.eclipse.sapphire.ui.Point> bendPoints = new ArrayList<org.eclipse.sapphire.ui.Point>(1);
              bendPoints.add(new org.eclipse.sapphire.ui.Point(bendPoint.x, bendPoint.y));
              connectionModel.getModelPart().resetBendpoints(bendPoints);
            }


public class SapphireDiagramEditorFactory 
{    
    public static DiagramLayoutPersistenceService getLayoutPersistenceService(SapphireDiagramEditorPagePart diagramPart)
    {
      DiagramLayoutPersistenceService layoutPersistentService = 
          diagramPart.service(DiagramLayoutPersistenceService.class);
      
        return layoutPersistentService;       
    }

Examples of org.eclipse.sapphire.ui.diagram.layout.DiagramLayoutPersistenceService

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