1 /*******************************************************************************
2 * Copyright (c) 2013 Association for Decentralized Information Management in
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
10 * VTT Technical Research Centre of Finland - initial API and implementation
11 *******************************************************************************/
12 package org.simantics.modeling.template2d.ui.adapters;
14 import java.util.ArrayList;
15 import java.util.Collection;
16 import java.util.Collections;
18 import org.simantics.browsing.ui.model.children.ChildRule;
19 import org.simantics.db.ReadGraph;
20 import org.simantics.db.Resource;
21 import org.simantics.db.common.utils.ListUtils;
22 import org.simantics.db.exception.DatabaseException;
23 import org.simantics.layer0.Layer0;
24 import org.simantics.scenegraph.ontology.ScenegraphResources;
26 public class ScenegraphChildrenRule implements ChildRule {
29 public boolean isCompatible(Class<?> contentType) {
30 return contentType.equals(Resource.class);
34 public Collection<?> getChildren(ReadGraph graph, Object parent)
35 throws DatabaseException {
37 Resource entry = (Resource)parent;
38 Layer0 L0 = Layer0.getInstance(graph);
39 ScenegraphResources SG = ScenegraphResources.getInstance(graph);
40 Resource list = graph.getPossibleObject(entry, SG.Node_children);
42 if(graph.isInstanceOf(list, L0.List)) return ListUtils.toList(graph, list);
44 return Collections.emptyList();
48 public Collection<?> getParents(ReadGraph graph, Object child)
49 throws DatabaseException {
50 return new ArrayList<Resource>();