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