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