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.diagram.flag;
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14 import org.simantics.db.ReadGraph;
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15 import org.simantics.db.Resource;
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16 import org.simantics.db.exception.DatabaseException;
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17 import org.simantics.diagram.stubs.DiagramResource;
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18 import org.simantics.diagram.synchronization.graph.DiagramGraphUtil;
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19 import org.simantics.g2d.elementclass.FlagClass;
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20 import org.simantics.g2d.elementclass.FlagClass.Mode;
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21 import org.simantics.g2d.elementclass.FlagClass.Type;
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22 import org.simantics.structural2.modelingRules.IModelingRules;
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25 * @author Tuukka Lehtonen
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27 public abstract class AbstractFlagType implements IFlagType {
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29 protected final Resource flag;
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30 protected final IModelingRules modelingRules;
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32 public AbstractFlagType(Resource flag, IModelingRules modelingRules) {
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34 throw new NullPointerException("null flag");
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35 if (modelingRules == null)
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36 throw new NullPointerException("null modeling rules");
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38 this.modelingRules = modelingRules;
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41 protected Type getType(ReadGraph graph) throws DatabaseException {
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42 DiagramResource dr = DiagramResource.getInstance(graph);
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43 FlagClass.Type t = DiagramGraphUtil.toFlagType(dr, graph.getPossibleObject(flag, dr.HasFlagType));
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47 protected Mode getMode(ReadGraph graph) throws DatabaseException {
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48 return getMode(graph, flag);
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51 public static Mode getMode(ReadGraph graph, Resource flag) throws DatabaseException {
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52 int joinCount = graph.getObjects(flag, DiagramResource.getInstance(graph).FlagIsJoinedBy).size();
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54 return FlagClass.Mode.Internal;
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55 else if(joinCount == 1) {
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56 Resource otherFlag = FlagUtil.getPossibleCounterpart(graph, flag);
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57 if(otherFlag == null /* FIXME just to get around npe */ ||
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58 DiagramGraphUtil.onSameDiagram(graph, flag, otherFlag))
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59 return FlagClass.Mode.Internal;
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61 return FlagClass.Mode.External;
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64 return new FlagClass.External(joinCount);
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