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.canvas.impl;
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14 import java.lang.reflect.Method;
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15 import java.util.HashMap;
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16 import java.util.HashSet;
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17 import java.util.Map;
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18 import java.util.Set;
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20 import org.simantics.g2d.canvas.IMouseCaptureContext;
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21 import org.simantics.g2d.canvas.IMouseCaptureHandle;
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22 import org.simantics.g2d.canvas.IMouseCaptureHandleListener;
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23 import org.simantics.g2d.canvas.IMouseCaptureListener;
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24 import org.simantics.utils.threads.IThreadWorkQueue;
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25 import org.simantics.utils.threads.SyncListenerList;
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28 * @author Toni Kalajainen
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30 public class MouseCaptureContext implements IMouseCaptureContext {
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32 protected Map<Integer, Set<IMouseCaptureHandle>> mouseCapture =
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33 new HashMap<Integer, Set<IMouseCaptureHandle>>();
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35 protected SyncListenerList<IMouseCaptureListener> mouseCaptureListeners =
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36 new SyncListenerList<IMouseCaptureListener>(IMouseCaptureListener.class);
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38 public void addMouseCaptureListener(IMouseCaptureListener listener) {
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39 mouseCaptureListeners.add(listener);
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41 public void addMouseCaptureListener(IMouseCaptureListener listener, IThreadWorkQueue thread) {
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42 mouseCaptureListeners.add(thread, listener);
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44 public void removeMouseCaptureListener(IMouseCaptureListener listener) {
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45 mouseCaptureListeners.remove(listener);
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47 public void removeMouseCaptureListener(IMouseCaptureListener listener, IThreadWorkQueue thread) {
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48 mouseCaptureListeners.remove(thread, listener);
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51 private final static Method onMouseCaptured = SyncListenerList.getMethod(IMouseCaptureListener.class, "onMouseCaptured");
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52 private final static Method onMouseReleased = SyncListenerList.getMethod(IMouseCaptureListener.class, "onMouseReleased");
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53 protected void fireMouseCaptured(int mouseId) {
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54 mouseCaptureListeners.fireEventSync(onMouseCaptured, this, mouseId);
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56 protected void fireAsyncMouseCaptured(int mouseId) {
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57 mouseCaptureListeners.fireEventAsync(onMouseCaptured, this, mouseId);
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59 protected void fireMouseReleased(int mouseId) {
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60 mouseCaptureListeners.fireEventSync(onMouseReleased, this, mouseId);
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62 protected void fireAsyncMouseReleased(int mouseId) {
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63 mouseCaptureListeners.fireEventAsync(onMouseReleased, this, mouseId);
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66 public synchronized IMouseCaptureHandle captureMouse(int mouseId) {
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67 Set<IMouseCaptureHandle> captures = mouseCapture.get(mouseId);
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68 IMouseCaptureHandle capture = new MouseCaptureHandle(mouseId);
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69 capture.addMouseCaptureHandleListener(new IMouseCaptureHandleListener() {
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71 public void onCaptureReleased(IMouseCaptureHandle sender) {
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72 synchronized(MouseCaptureContext.this)
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74 Set<IMouseCaptureHandle> captures = mouseCapture.get(sender.mouseId());
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75 if (!captures.contains(this)) return;
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76 captures.remove(this);
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77 if (captures.isEmpty()) {
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78 mouseCapture.remove(captures);
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79 fireMouseReleased(sender.mouseId());
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83 if (captures==null) {
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84 captures = new HashSet<IMouseCaptureHandle>();
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85 mouseCapture.put(mouseId, captures);
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86 fireMouseCaptured(mouseId);
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88 captures.add(capture);
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