1 /*******************************************************************************
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2 * Copyright (c) 2010, 2011 Association for Decentralized Information Management in
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4 * All rights reserved. This program and the accompanying materials
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5 * are made available under the terms of the Eclipse Public License v1.0
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6 * which accompanies this distribution, and is available at
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7 * http://www.eclipse.org/legal/epl-v10.html
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10 * VTT Technical Research Centre of Finland - initial API and implementation
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11 *******************************************************************************/
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12 package org.simantics.browsing.ui.model.check;
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14 import org.simantics.browsing.ui.BuiltinKeys;
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15 import org.simantics.browsing.ui.CheckedState;
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16 import org.simantics.browsing.ui.NodeContext;
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17 import org.simantics.browsing.ui.model.InvalidContribution;
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18 import org.simantics.browsing.ui.model.nodetypes.NodeType;
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19 import org.simantics.browsing.ui.model.tests.Test;
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20 import org.simantics.browsing.ui.model.visuals.VisualsContribution;
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21 import org.simantics.db.ReadGraph;
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22 import org.simantics.db.exception.DatabaseException;
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25 * Produces images for nodes of given node type.
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26 * @author Hannu Niemistö
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28 public class CheckedStateContribution extends VisualsContribution {
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30 CheckedStateRule stateRule;
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32 public CheckedStateContribution(NodeType nodeType, Test test, CheckedStateRule stateRule, double priority) throws InvalidContribution {
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33 super(nodeType, test, priority);
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34 if(!stateRule.isCompatible(
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35 nodeType.getContentType()
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37 throw new InvalidContribution("image rule is not compatible with the content type.");
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38 this.stateRule = stateRule;
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42 * Returns a image for the node or null, if contribution is
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43 * not suitable for the input.
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45 public CheckedState getCheckedState(ReadGraph graph, NodeContext context) {
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46 Object content = context.getConstant(BuiltinKeys.INPUT);
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48 if(test == null || test.test(graph, content))
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49 return stateRule.getCheckedState(graph, content);
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52 } catch(DatabaseException e) {
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