1 /*******************************************************************************
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2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
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3 * in Industry THTH ry.
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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.graph.impl;
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14 import java.util.Collection;
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16 import org.simantics.browsing.ui.NodeContext;
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17 import org.simantics.browsing.ui.PrimitiveQueryUpdater;
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18 import org.simantics.browsing.ui.BuiltinKeys.ViewpointKey;
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19 import org.simantics.browsing.ui.content.Viewpoint;
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20 import org.simantics.browsing.ui.content.ViewpointFactory;
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21 import org.simantics.db.ReadGraph;
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22 import org.simantics.db.Resource;
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23 import org.simantics.db.exception.DatabaseException;
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24 import org.simantics.layer0.Layer0;
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26 public class InheritsViewpointFactory implements ViewpointFactory {
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29 public Viewpoint create(final PrimitiveQueryUpdater updater, final NodeContext context, final ViewpointKey key) {
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30 assert(updater != null);
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31 assert(context != null);
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32 return new LazyViewpoint(updater, context, key) {
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34 public NodeContext[] children(ReadGraph graph) throws DatabaseException {
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35 Layer0 L0 = Layer0.getInstance(graph);
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36 Collection<Resource> children = graph.getObjects(getInput(Resource.class), L0.Inherits);
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37 return toContextsWithInput(children);
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40 public Boolean hasChildren(ReadGraph graph) throws DatabaseException {
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41 Layer0 L0 = Layer0.getInstance(graph);
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42 Collection<Resource> children = graph.getObjects(getInput(Resource.class), L0.Inherits);
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43 return Boolean.valueOf(children.size() > 0);
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49 public String toString() {
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50 return "Supertypes";
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