bundles/org.simantics.g2d/src/org/simantics/g2d/canvas/impl/PaintableContextImpl.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management
   3  * in Industry THTH ry.
   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
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.g2d.canvas.impl;
  13
  14 import java.lang.reflect.Method;
  15
  16 import org.simantics.g2d.canvas.IContentContext;
  17 import org.simantics.utils.datastructures.ListenerList;
  18 import org.simantics.utils.threads.CurrentThread;
  19 import org.simantics.utils.threads.IThreadWorkQueue;
  20 import org.simantics.utils.threads.SyncListenerList;
  21
  22 /**
  23  *
  24  * @See {@link IContentContext}
  25  *
  26  * @author Toni Kalajainen
  27  */
  28 public class PaintableContextImpl implements IContentContext {
  29
  30         @Override
  31         public void setDirty() {
  32                 fireSetDirty();
  33         }
  34
  35         protected ListenerList<IContentListener> list =
  36         new ListenerList<IContentListener>(IContentListener.class);
  37         protected SyncListenerList<IContentListener> list2 =
  38         new SyncListenerList<IContentListener>(IContentListener.class);
  39
  40         @Override
  41     public void addPaintableContextListener(IContentListener listener) {
  42         list.add(listener);
  43     }
  44         @Override
  45     public void addPaintableContextListener(IContentListener listener, IThreadWorkQueue thread) {
  46                 if (thread==CurrentThread.getThreadAccess())
  47                         addPaintableContextListener(listener);
  48                 else
  49                         list2.add(thread, listener);
  50     }
  51         @Override
  52     public void removePaintableContextListener(IContentListener listener) {
  53         list.remove(listener);
  54     }
  55         @Override
  56     public void removePaintableContextListener(IContentListener listener, IThreadWorkQueue thread) {
  57                 if (thread==CurrentThread.getThreadAccess())
  58                         addPaintableContextListener(listener);
  59                 else
  60                         list2.remove(thread, listener);
  61     }
  62     private final static Method onDirty = SyncListenerList.getMethod(IContentListener.class, "onDirty");
  63     protected void fireSetDirty() {
  64         for (IContentListener l : list.getListeners())
  65                 l.onDirty(this);
  66         list2.fireEventSync(onDirty, this);
  67     }
  68     protected void fireAsyncSetDirty() {
  69         list2.fireEventAsync(onDirty, this);
  70     }
  71
  72
  73
  74 }