bundles/org.simantics.modeling/src/org/simantics/modeling/typicals/TypicalSupport.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2012 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.modeling.typicals;\r
  13 \r
  14 import org.eclipse.core.runtime.preferences.IEclipsePreferences;\r
  15 import org.eclipse.core.runtime.preferences.IEclipsePreferences.IPreferenceChangeListener;\r
  16 import org.eclipse.core.runtime.preferences.IEclipsePreferences.PreferenceChangeEvent;\r
  17 import org.eclipse.core.runtime.preferences.InstanceScope;\r
  18 import org.simantics.db.service.GraphChangeListenerSupport;\r
  19 import org.simantics.project.IProject;\r
  20 \r
  21 /**\r
  22  * @author Tuukka Lehtonen\r
  23  * @deprecated not to be used anymore, will be removed\r
  24  */\r
  25 public class TypicalSupport {\r
  26 \r
  27     protected IProject project;\r
  28     protected GraphChangeListenerSupport changeListenerSupport;\r
  29 \r
  30     private IEclipsePreferences typicalPreferences;\r
  31     private TypicalDiagramTemplateListener typicalDiagramTemplateListener;\r
  32     private IPreferenceChangeListener typicalSynchronizationPreferenceListener = new TypicalSynchronizationPreferenceListener();\r
  33 \r
  34     public TypicalSupport(IProject project) {\r
  35         this.project = project;\r
  36         this.changeListenerSupport = project.getSession().getService(GraphChangeListenerSupport.class);\r
  37 \r
  38         setTypicalSynchronization( isSyncEnabled() );\r
  39         typicalPreferences = InstanceScope.INSTANCE.getNode(TypicalPreferences.P_NODE);\r
  40         typicalPreferences.addPreferenceChangeListener(typicalSynchronizationPreferenceListener);\r
  41     }\r
  42 \r
  43     public void dispose() {\r
  44         if (typicalPreferences != null) {\r
  45             typicalPreferences.removePreferenceChangeListener(typicalSynchronizationPreferenceListener);\r
  46         }\r
  47         if (typicalDiagramTemplateListener != null) {\r
  48             changeListenerSupport.removeMetadataListener(typicalDiagramTemplateListener);\r
  49             typicalDiagramTemplateListener = null;\r
  50         }\r
  51     }\r
  52 \r
  53     public void setTypicalSynchronization(boolean enabled) {\r
  54         if (enabled) {\r
  55             if (typicalDiagramTemplateListener == null) {\r
  56                 typicalDiagramTemplateListener = new TypicalDiagramTemplateListener();\r
  57                 changeListenerSupport.addMetadataListener( typicalDiagramTemplateListener );\r
  58             }\r
  59         } else {\r
  60             if (typicalDiagramTemplateListener != null) {\r
  61                 changeListenerSupport.removeMetadataListener( typicalDiagramTemplateListener );\r
  62                 typicalDiagramTemplateListener = null;\r
  63             }\r
  64         }\r
  65     }\r
  66 \r
  67     private boolean isSyncEnabled() {\r
  68         return InstanceScope.INSTANCE\r
  69                 .getNode(TypicalPreferences.P_NODE)\r
  70                 .getBoolean(\r
  71                         TypicalPreferences.P_REALTIME_TYPICAL_SYNC_ENABLED,\r
  72                         TypicalPreferences.DEFAULT_REALTIME_TYPICAL_SYNC_ENABLED);\r
  73     }\r
  74 \r
  75     private class TypicalSynchronizationPreferenceListener implements IPreferenceChangeListener {\r
  76         @Override\r
  77         public void preferenceChange(PreferenceChangeEvent event) {\r
  78             if (project == null || project.isDisposed())\r
  79                 return;\r
  80 \r
  81             if (TypicalPreferences.P_REALTIME_TYPICAL_SYNC_ENABLED.equals(event.getKey())) {\r
  82                 boolean enabled = isSyncEnabled();\r
  83                 setTypicalSynchronization(enabled);\r
  84             }\r
  85         }\r
  86     }\r
  87 \r
  88 }\r