bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/SuperTypeOfViewpointFactory.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2010 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  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.browsing.ui.graph.impl;
  13
  14 import java.util.Collection;
  15 import java.util.function.Consumer;
  16
  17 import org.simantics.browsing.ui.BuiltinKeys;
  18 import org.simantics.browsing.ui.BuiltinKeys.ViewpointKey;
  19 import org.simantics.browsing.ui.DataSource;
  20 import org.simantics.browsing.ui.NodeContext;
  21 import org.simantics.browsing.ui.PrimitiveQueryUpdater;
  22 import org.simantics.browsing.ui.common.NodeContextUtil;
  23 import org.simantics.browsing.ui.common.viewpoints.LazyContainerViewpoint;
  24 import org.simantics.browsing.ui.content.Viewpoint;
  25 import org.simantics.browsing.ui.content.ViewpointFactory;
  26 import org.simantics.db.ReadGraph;
  27 import org.simantics.db.Resource;
  28 import org.simantics.db.exception.DatabaseException;
  29 import org.simantics.layer0.Layer0;
  30
  31 public class SuperTypeOfViewpointFactory implements ViewpointFactory {
  32
  33     @Override
  34     public Viewpoint create(final PrimitiveQueryUpdater updater, final NodeContext context, final ViewpointKey key) {
  35         assert(updater != null);
  36         assert(context != null);
  37
  38         final LazyContainerViewpoint result = new LazyContainerViewpoint();
  39
  40         DataSource<ReadGraph> source = updater.getDataSource(ReadGraph.class);
  41         if (source == null)
  42             return result;
  43
  44         final Resource inputResource = (Resource) context.getConstant(BuiltinKeys.INPUT);
  45         assert(inputResource != null);
  46
  47         source.schedule(new Consumer<ReadGraph>() {
  48             @Override
  49             public void accept(ReadGraph source) {
  50                 try {
  51                         Collection<Resource> children = source.getObjects(inputResource, Layer0.getInstance(source).SupertypeOf);
  52                         NodeContext[] resultContexts = NodeContextUtil.toContextsWithInput(children);
  53                         result.setChildren(updater, resultContexts);
  54                         result.setHasChildren(resultContexts.length > 0);
  55
  56                         updater.scheduleReplace(context, key, result);
  57                 } catch (DatabaseException e) {
  58
  59                 }
  60             }
  61         });
  62
  63         return result;
  64     }
  65
  66     @Override
  67     public String toString() {
  68         return "Subtypes";
  69     }
  70
  71 }