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.chassis;
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14 import org.simantics.g2d.canvas.ICanvasContext;
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15 import org.simantics.utils.datastructures.hints.HintContext;
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16 import org.simantics.utils.datastructures.hints.IHintContext;
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17 import org.simantics.utils.threads.IThreadWorkQueue;
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18 import org.simantics.utils.threads.SyncListenerList;
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21 * @author Toni Kalajainen
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23 public abstract class AbstractChassis implements ICanvasChassis {
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26 protected IHintContext hintCtx = new HintContext();
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28 protected SyncListenerList<IChassisListener> listeners = new SyncListenerList<IChassisListener>(IChassisListener.class);
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30 protected ICanvasContext canvasContext;
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32 public void setCanvasContext(ICanvasContext canvasContext) {
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33 assert (this.canvasContext == null);
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34 assert (canvasContext != null);
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35 this.canvasContext = canvasContext;
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36 // Create canvas context and a layer of interactors
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37 canvasContext.getHintStack().addHintContext(hintCtx, 0);
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41 public ICanvasContext getCanvasContext() {
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42 return canvasContext;
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46 public void addChassisListener(IThreadWorkQueue thread, IChassisListener listener) {
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47 listeners.add(thread, listener);
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51 public void removeChassisListener(IThreadWorkQueue thread, IChassisListener listener) {
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52 listeners.remove(thread, listener);
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56 public void addChassisListener(IChassisListener listener) {
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57 listeners.add(listener);
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61 public void removeChassisListener(IChassisListener listener) {
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62 listeners.remove(listener);
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66 public IHintContext getHintContext() {
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