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