bundles/org.simantics.diagram/src/org/simantics/diagram/DiagramTypeUtils.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;\r
  13 \r
  14 import java.util.ArrayList;\r
  15 import java.util.Collection;\r
  16 \r
  17 import org.simantics.db.ReadGraph;\r
  18 import org.simantics.db.RequestProcessor;\r
  19 import org.simantics.db.Resource;\r
  20 import org.simantics.db.common.request.ResourceRead2;\r
  21 import org.simantics.db.exception.DatabaseException;\r
  22 import org.simantics.db.request.Read;\r
  23 import org.simantics.diagram.stubs.DiagramResource;\r
  24 import org.simantics.diagram.symbolcontribution.CompositeSymbolProviderFactory;\r
  25 import org.simantics.diagram.symbolcontribution.ISymbolProvider;\r
  26 import org.simantics.diagram.symbolcontribution.SymbolContribution;\r
  27 import org.simantics.diagram.symbolcontribution.SymbolProviderFactory;\r
  28 import org.simantics.diagram.symbollibrary.ISymbolGroup;\r
  29 import org.simantics.diagram.symbollibrary.ISymbolItem;\r
  30 import org.simantics.utils.ui.AdaptionUtils;\r
  31 \r
  32 /**\r
  33  * @author Tuukka Lehtonen\r
  34  */\r
  35 public final class DiagramTypeUtils {\r
  36 \r
  37     public static SymbolProviderFactory readSymbolProviderFactory(RequestProcessor processor, final Resource diagram) throws DatabaseException {\r
  38         return processor.syncRequest(new Read<SymbolProviderFactory>() {\r
  39             @Override\r
  40             public SymbolProviderFactory perform(ReadGraph graph) throws DatabaseException {\r
  41                 return readSymbolProviderFactory(graph, diagram);\r
  42             }\r
  43         });\r
  44     }\r
  45 \r
  46     public static SymbolProviderFactory readSymbolProviderFactory(ReadGraph graph, Resource diagram) throws DatabaseException {\r
  47         DiagramResource dr = DiagramResource.getInstance(graph);\r
  48 \r
  49         Collection<SymbolProviderFactory> factories = new ArrayList<SymbolProviderFactory>();\r
  50 \r
  51         for (Resource diagramType : graph.getTypes(diagram)) {\r
  52             for (Resource symbolContribution : graph.getObjects(diagramType, dr.HasSymbolContribution)) {\r
  53                 // TODO: consider how to react to possible adaption failures\r
  54                 SymbolContribution contribution = graph.adaptUnique(symbolContribution, SymbolContribution.class);\r
  55                 factories.add(contribution.create(graph, diagram));\r
  56             }\r
  57         }\r
  58 \r
  59         return new CompositeSymbolProviderFactory(factories);\r
  60     }\r
  61 \r
  62     public static ISymbolProvider readSymbolContributions(RequestProcessor processor, final Resource diagram) throws DatabaseException {\r
  63         return processor.syncRequest(new Read<ISymbolProvider>() {\r
  64             @Override\r
  65             public ISymbolProvider perform(ReadGraph graph) throws DatabaseException {\r
  66                 return readSymbolContributions(graph, diagram);\r
  67             }\r
  68         });\r
  69     }\r
  70 \r
  71     public static ISymbolProvider readSymbolContributions(ReadGraph graph, Resource diagram) throws DatabaseException {\r
  72         return readSymbolProviderFactory(graph, diagram).create(graph);\r
  73     }\r
  74 \r
  75 \r
  76     public static boolean symbolAllowedOnDiagram(RequestProcessor processor, ISymbolItem symbol, final Resource diagram) throws DatabaseException {\r
  77         return symbolFromGroupAllowedOnDiagram(processor, symbol.getGroup(), diagram);\r
  78     }\r
  79 \r
  80     public static boolean symbolFromGroupAllowedOnDiagram(RequestProcessor processor, ISymbolGroup group, final Resource diagram) throws DatabaseException {\r
  81         final Resource groupResource = AdaptionUtils.adaptToSingle(group, Resource.class);\r
  82         return symbolFromGroupAllowedOnDiagram(processor, groupResource, diagram);\r
  83     }\r
  84 \r
  85     public static boolean symbolFromGroupAllowedOnDiagram(RequestProcessor processor, final Resource symbolGroup, final Resource diagram) throws DatabaseException {\r
  86         // no semantic info, no validation\r
  87         if (diagram == null)\r
  88             return true;\r
  89         if (symbolGroup == null)\r
  90             return true;\r
  91 \r
  92         return processor.syncRequest(new ResourceRead2<Boolean>(diagram, symbolGroup) {\r
  93             @Override\r
  94             public Boolean perform(ReadGraph graph) throws DatabaseException {\r
  95                 DiagramResource DIA = DiagramResource.getInstance(graph);\r
  96                 for (Resource diagramType : graph.getTypes(diagram)) {\r
  97                     for (Resource symbolContribution : graph.getObjects(diagramType, DIA.HasSymbolContribution)) {\r
  98                         for (Resource symbolLibrary : graph.getObjects(symbolContribution, DIA.BasicSymbolContributionHasSymbolLibrary)) {\r
  99                             if (symbolGroup.equals(symbolLibrary))\r
 100                                 return Boolean.TRUE;\r
 101                         }\r
 102                     }\r
 103                 }\r
 104                 return Boolean.FALSE;\r
 105             }\r
 106         });\r
 107     }\r
 108 \r
 109 }\r