bundles/org.simantics.equation/src/org/simantics/equation/Activator.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.equation;
  13
  14 import org.eclipse.ui.plugin.AbstractUIPlugin;
  15 import org.osgi.framework.BundleContext;
  16 import org.simantics.Simantics;
  17 import org.simantics.db.ReadGraph;
  18 import org.simantics.db.common.request.ReadRequest;
  19 import org.simantics.db.management.ISessionContext;
  20 import org.simantics.db.management.ISessionContextChangedListener;
  21 import org.simantics.db.management.SessionContextChangedEvent;
  22
  23 /**
  24  * The activator class controls the plug-in life cycle
  25  */
  26 public class Activator extends AbstractUIPlugin {
  27
  28         // The plug-in ID
  29         public static final String PLUGIN_ID = "org.simantics.equation";
  30
  31         // The shared instance
  32         private static Activator plugin;
  33
  34         /**
  35          * The constructor
  36          */
  37         public Activator() {
  38         }
  39
  40         /*
  41          * (non-Javadoc)
  42          * @see org.eclipse.ui.plugin.AbstractUIPlugin#start(org.osgi.framework.BundleContext)
  43          */
  44         public void start(BundleContext context) throws Exception {
  45                 super.start(context);
  46                 plugin = this;
  47
  48                 Simantics.getSessionContextProvider().addContextChangedListener(new ISessionContextChangedListener() {
  49                         @Override
  50                         public void sessionContextChanged(SessionContextChangedEvent event) {
  51                                 ISessionContext ctx = event.getNewValue();
  52                                 if (ctx != null) {
  53                                         ctx.getSession().asyncRequest(new ReadRequest() {
  54                                             @Override
  55                                             public void run(ReadGraph g) {
  56                                                 EquationResources.initialize(g);
  57                                             };
  58                                         });
  59                                 } else {
  60                                         EquationResources.deinitialize();
  61                                 }
  62                         }
  63                 });
  64
  65                 try {
  66                         Simantics.getSession().syncRequest(new ReadRequest() {
  67                             @Override
  68                             public void run(ReadGraph g) {
  69                                 EquationResources.initialize(g);
  70                             }
  71                         });
  72                 } catch (Exception e) {
  73
  74                 }
  75
  76
  77         }
  78
  79         /*
  80          * (non-Javadoc)
  81          * @see org.eclipse.ui.plugin.AbstractUIPlugin#stop(org.osgi.framework.BundleContext)
  82          */
  83         public void stop(BundleContext context) throws Exception {
  84                 plugin = null;
  85                 super.stop(context);
  86         }
  87
  88         /**
  89          * Returns the shared instance
  90          *
  91          * @return the shared instance
  92          */
  93         public static Activator getDefault() {
  94                 return plugin;
  95         }
  96
  97 }