bundles/org.simantics.g2d/src/org/simantics/g2d/example/chassis/ViewPartExample.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.example.chassis;\r
  13 \r
  14 import org.eclipse.swt.widgets.Composite;\r
  15 import org.eclipse.ui.part.ViewPart;\r
  16 import org.simantics.g2d.canvas.ICanvasContext;\r
  17 import org.simantics.g2d.canvas.impl.CanvasContext;\r
  18 import org.simantics.g2d.chassis.ICanvasChassis;\r
  19 import org.simantics.g2d.chassis.IChassisListener;\r
  20 import org.simantics.g2d.chassis.SWTChassis;\r
  21 import org.simantics.g2d.example.TestCanvas;\r
  22 import org.simantics.utils.threads.AWTThread;\r
  23 import org.simantics.utils.threads.IThreadWorkQueue;\r
  24 import org.simantics.utils.threads.ThreadUtils;\r
  25 \r
  26 public class ViewPartExample extends ViewPart {\r
  27     SWTChassis c;\r
  28 \r
  29     @Override\r
  30     public void createPartControl(Composite parent) {\r
  31         c = new SWTChassis(parent, 0);\r
  32         c.syncPopulate();\r
  33 \r
  34         IThreadWorkQueue thread = AWTThread.getThreadAccess();\r
  35         CanvasContext canvasContext = TestCanvas.createTestCanvas(thread);\r
  36 \r
  37         c.setCanvasContext(canvasContext);\r
  38 \r
  39         c.addChassisListener(new IChassisListener() {\r
  40             @Override\r
  41             public void chassisClosed(ICanvasChassis sender) {\r
  42                 // Prevent deadlock while disposing which using syncExec would result in. \r
  43                 ThreadUtils.asyncExec(c.getCanvasContext().getThreadAccess(), new Runnable() {\r
  44                     @Override\r
  45                     public void run() {\r
  46                         ICanvasContext ctx = c.getCanvasContext();\r
  47                         c.getAWTComponent().setCanvasContext(null);\r
  48                         ctx.dispose();\r
  49                     }\r
  50                 });\r
  51             }\r
  52         });\r
  53     }\r
  54 \r
  55     @Override\r
  56     public void setFocus() {\r
  57         c.setFocus();\r
  58     }\r
  59 \r
  60 }\r