1 /*******************************************************************************
2 * Copyright (c) 2010, 2011 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.browsing.ui.model.check;
14 import org.simantics.browsing.ui.BuiltinKeys;
15 import org.simantics.browsing.ui.CheckedState;
16 import org.simantics.browsing.ui.NodeContext;
17 import org.simantics.browsing.ui.model.InvalidContribution;
18 import org.simantics.browsing.ui.model.nodetypes.NodeType;
19 import org.simantics.browsing.ui.model.tests.Test;
20 import org.simantics.browsing.ui.model.visuals.VisualsContribution;
21 import org.simantics.db.ReadGraph;
22 import org.simantics.db.exception.DatabaseException;
25 * Produces images for nodes of given node type.
26 * @author Hannu Niemistö
28 public class CheckedStateContribution extends VisualsContribution {
30 CheckedStateRule stateRule;
32 public CheckedStateContribution(NodeType nodeType, Test test, CheckedStateRule stateRule, double priority) throws InvalidContribution {
33 super(nodeType, test, priority);
34 if(!stateRule.isCompatible(
35 nodeType.getContentType()
37 throw new InvalidContribution("image rule is not compatible with the content type.");
38 this.stateRule = stateRule;
42 * Returns a image for the node or null, if contribution is
43 * not suitable for the input.
45 public CheckedState getCheckedState(ReadGraph graph, NodeContext context) {
46 Object content = context.getConstant(BuiltinKeys.INPUT);
48 if(test == null || test.test(graph, content))
49 return stateRule.getCheckedState(graph, content);
52 } catch(DatabaseException e) {