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

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