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