org.simantics.proconf.processeditor/src/org/simantics/processeditor/Activator.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007 VTT Technical Research Centre of Finland and others.\r
   3  * All rights reserved. This program and the accompanying materials\r
   4  * are made available under the terms of the Eclipse Public License v1.0\r
   5  * which accompanies this distribution, and is available at\r
   6  * http://www.eclipse.org/legal/epl-v10.html\r
   7  *\r
   8  * Contributors:\r
   9  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  10  *******************************************************************************/\r
  11 package org.simantics.processeditor;\r
  12 \r
  13 import org.eclipse.ui.plugin.AbstractUIPlugin;\r
  14 import org.osgi.framework.BundleContext;\r
  15 import org.simantics.db.Graph;\r
  16 import org.simantics.db.GraphRequestAdapter;\r
  17 import org.simantics.db.GraphRequestStatus;\r
  18 import org.simantics.db.management.ISessionContext;\r
  19 import org.simantics.db.management.ISessionContextChangedListener;\r
  20 import org.simantics.db.management.SessionContextChangedEvent;\r
  21 import org.simantics.proconf.ui.ProConfUI;\r
  22 \r
  23 \r
  24 \r
  25 \r
  26 /**\r
  27  * The activator class controls the plug-in life cycle\r
  28  */\r
  29 public class Activator extends AbstractUIPlugin {\r
  30 \r
  31         // The plug-in ID\r
  32         public static final String PLUGIN_ID = "fi.vtt.simantics.processeditor";\r
  33 \r
  34         // The shared instance\r
  35         private static Activator plugin;\r
  36         \r
  37         /**\r
  38          * The constructor\r
  39          */\r
  40         public Activator() {\r
  41         }\r
  42 \r
  43         /*\r
  44          * (non-Javadoc)\r
  45          * @see org.eclipse.ui.plugin.AbstractUIPlugin#start(org.osgi.framework.BundleContext)\r
  46          */\r
  47         public void start(BundleContext context) throws Exception {\r
  48                 super.start(context);\r
  49                 plugin = this;\r
  50                 ProConfUI.getSessionContextProvider().addContextChangedListener(new ISessionContextChangedListener() {\r
  51                         @Override\r
  52                         public void sessionContextChanged(SessionContextChangedEvent event) {\r
  53                                 ISessionContext ctx = event.getNewValue();\r
  54                                 if (ctx != null) {\r
  55                                         ctx.getSession().asyncRead(new GraphRequestAdapter() {\r
  56                                                 public GraphRequestStatus perform(Graph g) throws Exception {\r
  57                                                         ProcessResource.initialize(g);\r
  58                                                         return GraphRequestStatus.transactionComplete();\r
  59                                                 };\r
  60                                         });\r
  61                                 } else {\r
  62                                         ProcessResource.deinitialize();\r
  63                                 }\r
  64                         }\r
  65                 });\r
  66                 try {\r
  67                         ProConfUI.getSession().asyncRead(new GraphRequestAdapter() {\r
  68                                 @Override\r
  69                                 public GraphRequestStatus perform(Graph g) throws Exception {\r
  70                                         ProcessResource.initialize(g);\r
  71                                         return GraphRequestStatus.transactionComplete();\r
  72                                 }\r
  73                         });\r
  74                 } catch (Exception e) {\r
  75                         \r
  76                 }\r
  77         }\r
  78 \r
  79         /*\r
  80          * (non-Javadoc)\r
  81          * @see org.eclipse.ui.plugin.AbstractUIPlugin#stop(org.osgi.framework.BundleContext)\r
  82          */\r
  83         public void stop(BundleContext context) throws Exception {\r
  84                 plugin = null;\r
  85                 super.stop(context);\r
  86         }\r
  87 \r
  88         /**\r
  89          * Returns the shared instance\r
  90          *\r
  91          * @return the shared instance\r
  92          */\r
  93         public static Activator getDefault() {\r
  94                 return plugin;\r
  95         }\r
  96 \r
  97 }\r