bundles/org.simantics.diagram/src/org/simantics/diagram/symbollibrary/SymbolManagerFeature.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.diagram.symbollibrary;
  13
  14 import java.util.Collection;
  15 import java.util.Collections;
  16 import java.util.HashSet;
  17
  18 import org.simantics.db.exception.DatabaseException;
  19 import org.simantics.diagram.synchronization.graph.BasicResources;
  20 import org.simantics.project.IProject;
  21 import org.simantics.project.exception.ProjectException;
  22 import org.simantics.project.features.AbstractProjectFeature;
  23 import org.simantics.utils.datastructures.disposable.AbstractDisposable;
  24 import org.simantics.utils.datastructures.disposable.IDisposable;
  25
  26 class SymbolManager extends AbstractDisposable implements ISymbolManager, IDisposable {
  27
  28     IProject project;
  29
  30     public SymbolManager(IProject project) {
  31         this.project = project;
  32         project.setHint(ISymbolManager.KEY_SYMBOL_GROUPS, Collections.emptySet());
  33     }
  34
  35     @Override
  36     protected void doDispose() {
  37         project.setHint(KEY_SYMBOL_GROUPS, Collections.emptySet());
  38     }
  39
  40     @Override
  41     public void addEntryPoints(Collection<ISymbolGroup> eps) {
  42         Collection<ISymbolGroup> groups = project.getHint(KEY_SYMBOL_GROUPS);
  43         Collection<ISymbolGroup> newGroups = new HashSet<ISymbolGroup>(groups);
  44         newGroups.addAll(eps);
  45         project.setHint(KEY_SYMBOL_GROUPS, Collections.unmodifiableCollection(newGroups));
  46     }
  47
  48     @Override
  49     public void removeEntryPoints(Collection<ISymbolGroup> eps) {
  50         Collection<ISymbolGroup> groups = project.getHint(KEY_SYMBOL_GROUPS);
  51         Collection<ISymbolGroup> newGroups = new HashSet<ISymbolGroup>(groups);
  52         newGroups.removeAll(eps);
  53         project.setHint(KEY_SYMBOL_GROUPS, Collections.unmodifiableCollection(newGroups));
  54     }
  55
  56 }
  57
  58 public class SymbolManagerFeature extends AbstractProjectFeature {
  59
  60     SymbolManager sm;
  61
  62     @Override
  63     public void configure() throws ProjectException {
  64         // IMPORTANT: This is vital for making sure that certain basic
  65         // resource classes are loaded into the database session as its
  66         // services (see org.simantics.db.ServiceLocator).
  67         try {
  68             BasicResources.getInstance(getSession());
  69         } catch (DatabaseException e) {
  70             throw new ProjectException(e);
  71         }
  72
  73         sm = new SymbolManager(getProject());
  74         getProjectElement().setHint(ISymbolManager.KEY_SYMBOL_MANAGER, sm);
  75     }
  76
  77     @Override
  78     public void deconfigure() throws ProjectException {
  79         if (getProjectElement().getHint(ISymbolManager.KEY_SYMBOL_MANAGER) == sm)
  80             getProjectElement().removeHint(ISymbolManager.KEY_SYMBOL_MANAGER);
  81         sm.dispose();
  82         sm = null;
  83     }
  84
  85 }