1 /*******************************************************************************
2 * Copyright (c) 2007, 2012 Association for Decentralized Information Management
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.browsing.ui.swt;
14 import java.util.ArrayList;
15 import java.util.Collection;
17 import org.simantics.browsing.ui.BuiltinKeys;
18 import org.simantics.browsing.ui.BuiltinKeys.ViewpointKey;
19 import org.simantics.browsing.ui.NodeContext;
20 import org.simantics.browsing.ui.PrimitiveQueryUpdater;
21 import org.simantics.browsing.ui.common.NodeContextBuilder;
22 import org.simantics.browsing.ui.content.Viewpoint;
23 import org.simantics.browsing.ui.content.ViewpointFactory;
24 import org.simantics.browsing.ui.graph.impl.LazyViewpoint;
25 import org.simantics.db.ReadGraph;
26 import org.simantics.db.Resource;
27 import org.simantics.db.common.ResourceArray;
28 import org.simantics.db.exception.DatabaseException;
29 import org.simantics.layer0.Layer0;
30 import org.simantics.ui.utils.ResourceAdaptionUtils;
32 public class ValuePropertyViewpointFactory implements ViewpointFactory {
35 public Viewpoint create(PrimitiveQueryUpdater provider, final NodeContext context, ViewpointKey key) {
36 assert(provider != null);
37 assert(context != null);
39 return new LazyViewpoint(provider, context, key) {
41 public NodeContext[] children(ReadGraph graph) throws DatabaseException {
42 Layer0 L0 = Layer0.getInstance(graph);
43 ResourceArray ra = ResourceAdaptionUtils.toSingleResourceArray(context.getConstant(BuiltinKeys.INPUT));
44 Collection<Resource> children = graph.getObjects(ra.resources[0], L0.HasProperty);
46 ArrayList<NodeContext> resultContexts = new ArrayList<NodeContext>();
47 for (Resource child : children) {
48 if (graph.isInstanceOf(child, L0.Literal)) {
49 resultContexts.add(NodeContextBuilder.buildWithInput(child));
53 return resultContexts.toArray(new NodeContext[resultContexts.size()]);
57 public Boolean hasChildren(ReadGraph graph) throws DatabaseException {
58 return children(graph).length > 0;
64 public String toString() {
65 return "Scalar values";