1 /*******************************************************************************
2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
4 * All rights reserved. This program and the accompanying materials
5 * are made available under the terms of the Eclipse Public License v1.0
6 * which accompanies this distribution, and is available at
7 * http://www.eclipse.org/legal/epl-v10.html
10 * VTT Technical Research Centre of Finland - initial API and implementation
11 *******************************************************************************/
12 package org.simantics.g2d.canvas.impl;
14 import java.lang.reflect.Method;
15 import java.util.HashMap;
16 import java.util.HashSet;
20 import org.simantics.g2d.canvas.IMouseCaptureContext;
21 import org.simantics.g2d.canvas.IMouseCaptureHandle;
22 import org.simantics.g2d.canvas.IMouseCaptureHandleListener;
23 import org.simantics.g2d.canvas.IMouseCaptureListener;
24 import org.simantics.utils.threads.IThreadWorkQueue;
25 import org.simantics.utils.threads.SyncListenerList;
28 * @author Toni Kalajainen
30 public class MouseCaptureContext implements IMouseCaptureContext {
32 protected Map<Integer, Set<IMouseCaptureHandle>> mouseCapture =
33 new HashMap<Integer, Set<IMouseCaptureHandle>>();
35 protected SyncListenerList<IMouseCaptureListener> mouseCaptureListeners =
36 new SyncListenerList<IMouseCaptureListener>(IMouseCaptureListener.class);
38 public void addMouseCaptureListener(IMouseCaptureListener listener) {
39 mouseCaptureListeners.add(listener);
41 public void addMouseCaptureListener(IMouseCaptureListener listener, IThreadWorkQueue thread) {
42 mouseCaptureListeners.add(thread, listener);
44 public void removeMouseCaptureListener(IMouseCaptureListener listener) {
45 mouseCaptureListeners.remove(listener);
47 public void removeMouseCaptureListener(IMouseCaptureListener listener, IThreadWorkQueue thread) {
48 mouseCaptureListeners.remove(thread, listener);
51 private final static Method onMouseCaptured = SyncListenerList.getMethod(IMouseCaptureListener.class, "onMouseCaptured");
52 private final static Method onMouseReleased = SyncListenerList.getMethod(IMouseCaptureListener.class, "onMouseReleased");
53 protected void fireMouseCaptured(int mouseId) {
54 mouseCaptureListeners.fireEventSync(onMouseCaptured, this, mouseId);
56 protected void fireAsyncMouseCaptured(int mouseId) {
57 mouseCaptureListeners.fireEventAsync(onMouseCaptured, this, mouseId);
59 protected void fireMouseReleased(int mouseId) {
60 mouseCaptureListeners.fireEventSync(onMouseReleased, this, mouseId);
62 protected void fireAsyncMouseReleased(int mouseId) {
63 mouseCaptureListeners.fireEventAsync(onMouseReleased, this, mouseId);
66 public synchronized IMouseCaptureHandle captureMouse(int mouseId) {
67 Set<IMouseCaptureHandle> captures = mouseCapture.get(mouseId);
68 IMouseCaptureHandle capture = new MouseCaptureHandle(mouseId);
69 capture.addMouseCaptureHandleListener(new IMouseCaptureHandleListener() {
71 public void onCaptureReleased(IMouseCaptureHandle sender) {
72 synchronized(MouseCaptureContext.this)
74 Set<IMouseCaptureHandle> captures = mouseCapture.get(sender.mouseId());
75 if (!captures.contains(this)) return;
76 captures.remove(this);
77 if (captures.isEmpty()) {
78 mouseCapture.remove(captures);
79 fireMouseReleased(sender.mouseId());
84 captures = new HashSet<IMouseCaptureHandle>();
85 mouseCapture.put(mouseId, captures);
86 fireMouseCaptured(mouseId);
88 captures.add(capture);