bundles/org.simantics.simulation/src/org/simantics/simulation/project/CountingExperimentActivationListener.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.simulation.project;\r
  13 \r
  14 import java.util.concurrent.atomic.AtomicBoolean;\r
  15 import java.util.concurrent.atomic.AtomicInteger;\r
  16 \r
  17 import org.eclipse.core.runtime.IProgressMonitor;\r
  18 import org.eclipse.core.runtime.IStatus;\r
  19 import org.simantics.simulation.Activator;\r
  20 import org.simantics.simulation.experiment.IExperiment;\r
  21 \r
  22 /**\r
  23  * @author Tuukka Lehtonen\r
  24  */\r
  25 public class CountingExperimentActivationListener implements IExperimentActivationListener {\r
  26 \r
  27     IExperimentActivationListener proxy;\r
  28     AtomicInteger                 activationCounter;\r
  29     IProgressMonitor              monitor;\r
  30     AtomicBoolean                 excepted = new AtomicBoolean(false);\r
  31 \r
  32     public CountingExperimentActivationListener(IExperimentActivationListener proxy, int expectedActivations) {\r
  33         this(proxy, expectedActivations, null);\r
  34     }\r
  35 \r
  36     public CountingExperimentActivationListener(IExperimentActivationListener proxy, int expectedActivations, IProgressMonitor monitor) {\r
  37         this.proxy = proxy;\r
  38         this.activationCounter = new AtomicInteger(expectedActivations);\r
  39         this.monitor = monitor;\r
  40     }\r
  41 \r
  42     @Override\r
  43     public void onMessage(IStatus message) {\r
  44         proxy.onMessage(message);\r
  45     }\r
  46 \r
  47     @Override\r
  48     public void onExperimentActivated(IExperiment experiment) {\r
  49         if (activationCounter.decrementAndGet() == 0) {\r
  50             if (!excepted.get())\r
  51                 proxy.onExperimentActivated(experiment);\r
  52         }\r
  53     }\r
  54 \r
  55     @Override\r
  56     public void onFailure(Throwable e) {\r
  57         if (excepted.compareAndSet(false, true))\r
  58             proxy.onFailure(e);\r
  59         else\r
  60             Activator.logError(e.getMessage(), e);\r
  61     }\r
  62 \r
  63     @Override\r
  64     public IProgressMonitor getProgressMonitor() {\r
  65         return monitor != null ? monitor : proxy.getProgressMonitor();\r
  66     }\r
  67 \r
  68 }\r