bundles/org.simantics.event/src/org/simantics/event/view/contribution/EventTypeImageDescriptorRequest.java

   1 /*******************************************************************************
   2  * Copyright (c) 2013 Association for Decentralized Information Management
   3  * in Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     Semantum Oy - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.event.view.contribution;
  13
  14 import org.eclipse.jface.resource.ImageDescriptor;
  15 import org.simantics.db.ReadGraph;
  16 import org.simantics.db.Resource;
  17 import org.simantics.db.common.request.ResourceRead;
  18 import org.simantics.db.exception.DatabaseException;
  19 import org.simantics.ui.icons.GraphImageDescriptor;
  20 import org.simantics.viewpoint.ontology.ViewpointResource;
  21
  22 /**
  23  * @author Tuukka Lehtonen
  24  */
  25 public class EventTypeImageDescriptorRequest extends ResourceRead<ImageDescriptor> {
  26
  27     public EventTypeImageDescriptorRequest(Resource eventType) {
  28         super(eventType);
  29     }
  30
  31     @Override
  32     public ImageDescriptor perform(ReadGraph graph) throws DatabaseException {
  33         ViewpointResource VP = ViewpointResource.getInstance(graph);
  34         Resource image = graph.getPossibleObject(resource, VP.ConstantImageRule_HasImage);
  35         if (image == null)
  36             return null;
  37         return new GraphImageDescriptor(graph, image);
  38     }
  39
  40 }