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

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
   3  * in Industry THTH ry.\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.g2d.canvas.impl;\r
  13 \r
  14 import java.lang.reflect.Method;\r
  15 \r
  16 import org.simantics.g2d.canvas.IContentContext;\r
  17 import org.simantics.utils.datastructures.ListenerList;\r
  18 import org.simantics.utils.threads.CurrentThread;\r
  19 import org.simantics.utils.threads.IThreadWorkQueue;\r
  20 import org.simantics.utils.threads.SyncListenerList;\r
  21 \r
  22 /**\r
  23  * \r
  24  * @See {@link IContentContext}\r
  25  * \r
  26  * @author Toni Kalajainen\r
  27  */\r
  28 public class PaintableContextImpl implements IContentContext {\r
  29 \r
  30         @Override\r
  31         public void setDirty() {\r
  32                 fireSetDirty();         \r
  33         }\r
  34         \r
  35         protected ListenerList<IContentListener> list =\r
  36         new ListenerList<IContentListener>(IContentListener.class);\r
  37         protected SyncListenerList<IContentListener> list2 =\r
  38         new SyncListenerList<IContentListener>(IContentListener.class);\r
  39 \r
  40         @Override\r
  41     public void addPaintableContextListener(IContentListener listener) {\r
  42         list.add(listener);\r
  43     }\r
  44         @Override\r
  45     public void addPaintableContextListener(IContentListener listener, IThreadWorkQueue thread) {\r
  46                 if (thread==CurrentThread.getThreadAccess()) \r
  47                         addPaintableContextListener(listener);\r
  48                 else\r
  49                         list2.add(thread, listener);\r
  50     }    \r
  51         @Override\r
  52     public void removePaintableContextListener(IContentListener listener) {\r
  53         list.remove(listener);\r
  54     }\r
  55         @Override\r
  56     public void removePaintableContextListener(IContentListener listener, IThreadWorkQueue thread) {\r
  57                 if (thread==CurrentThread.getThreadAccess()) \r
  58                         addPaintableContextListener(listener);\r
  59                 else\r
  60                         list2.remove(thread, listener);\r
  61     }\r
  62     private final static Method onDirty = SyncListenerList.getMethod(IContentListener.class, "onDirty");\r
  63     protected void fireSetDirty() {\r
  64         for (IContentListener l : list.getListeners())\r
  65                 l.onDirty(this);\r
  66         list2.fireEventSync(onDirty, this);\r
  67     }\r
  68     protected void fireAsyncSetDirty() {\r
  69         list2.fireEventAsync(onDirty, this);\r
  70     }\r
  71 \r
  72         \r
  73             \r
  74 }\r