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.g2d.diagram.participant;
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14 import org.simantics.g2d.canvas.ICanvasContext;
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15 import org.simantics.g2d.canvas.impl.DependencyReflection.Dependency;
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16 import org.simantics.g2d.diagram.IDiagram;
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17 import org.simantics.g2d.element.IElement;
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18 import org.simantics.g2d.element.handler.Heartbeat;
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19 import org.simantics.g2d.participant.TimeParticipant;
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20 import org.simantics.scenegraph.g2d.events.TimeEvent;
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21 import org.simantics.scenegraph.g2d.events.EventHandlerReflection.EventHandler;
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24 * This participant sends time events to Heartbeat element handlers.
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26 * @See {@link Heartbeat}
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27 * @author Toni Kalajainen
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29 public class ElementHeartbeater extends AbstractDiagramParticipant {
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31 @Dependency TimeParticipant time;
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34 public void addedToContext(ICanvasContext ctx) {
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35 super.addedToContext(ctx);
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36 time.registerForEvents(getClass());
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40 public void removedFromContext(ICanvasContext ctx) {
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41 time.unregisterForEvents(getClass());
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42 super.removedFromContext(ctx);
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45 @EventHandler(priority = 0)
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46 public boolean handleHeartbeat(TimeEvent te) {
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47 IDiagram d = diagram;
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48 if (d==null) return false;
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49 for (IElement e : d.getSnapshot())
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51 for (Heartbeat hb : e.getElementClass().getItemsByClass(Heartbeat.class))
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52 hb.heartbeat(e, te.time, te.interval, getContext());
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