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[simantics/platform.git] / bundles / org.simantics.browsing.ui.graph.impl / src / org / simantics / browsing / ui / graph / impl / ArrayPropertyViewpoint.java
1 /*******************************************************************************\r
2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
3  * in Industry THTH ry.\r
4  * All rights reserved. This program and the accompanying materials\r
5  * are made available under the terms of the Eclipse Public License v1.0\r
6  * which accompanies this distribution, and is available at\r
7  * http://www.eclipse.org/legal/epl-v10.html\r
8  *\r
9  * Contributors:\r
10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
11  *******************************************************************************/\r
12 package org.simantics.browsing.ui.graph.impl;\r
13 \r
14 import org.simantics.browsing.ui.NodeContext;\r
15 import org.simantics.browsing.ui.PrimitiveQueryUpdater;\r
16 import org.simantics.browsing.ui.BuiltinKeys.ViewpointKey;\r
17 import org.simantics.browsing.ui.common.property.IProperty;\r
18 import org.simantics.browsing.ui.common.property.PropertyUtil;\r
19 import org.simantics.db.ReadGraph;\r
20 \r
21 /**\r
22  * @author Tuukka Lehtonen\r
23  */\r
24 public class ArrayPropertyViewpoint extends LazyParametrizedViewpoint {\r
25 \r
26     public ArrayPropertyViewpoint(PrimitiveQueryUpdater updater, NodeContext context, ViewpointKey key, Object... parameters) {\r
27         super(updater, context, key, parameters);\r
28     }\r
29 \r
30     @Override\r
31     public NodeContext[] children(ReadGraph graph) {\r
32         IProperty input = getInput(IProperty.class);\r
33         NodeContext[] children = PropertyUtil.getChildren(input);\r
34         return children;\r
35     }\r
36 \r
37     @Override\r
38     public Boolean hasChildren(ReadGraph graph) {\r
39         return Boolean.valueOf(children(graph).length > 0);\r
40     }\r
41 \r
42 }\r