bundles/org.simantics.diagram/src/org/simantics/diagram/flag/DiagramFlagPreferences.java

   1 package org.simantics.diagram.flag;
   2
   3 import org.simantics.Simantics;
   4 import org.simantics.db.ReadGraph;
   5 import org.simantics.db.RequestProcessor;
   6 import org.simantics.db.Resource;
   7 import org.simantics.db.Session;
   8 import org.simantics.db.WriteGraph;
   9 import org.simantics.db.common.primitiverequest.PossibleObject;
  10 import org.simantics.db.common.request.ResourceRead;
  11 import org.simantics.db.common.request.WriteRequest;
  12 import org.simantics.db.exception.DatabaseException;
  13 import org.simantics.diagram.stubs.DiagramResource;
  14 import org.simantics.utils.datastructures.Callback;
  15 import org.simantics.utils.ui.ErrorLogger;
  16
  17 /**
  18  * @author Tuukka Lehtonen
  19  */
  20 public class DiagramFlagPreferences {
  21
  22     /**
  23      * Return the resource describing the currently active flag labeling scheme
  24      * from the specified resource. The default intended resource for checking
  25      * the scheme from is the active project.
  26      */
  27     public static class ReadFlagLabelingSchemeResource extends ResourceRead<Resource> {
  28
  29         public ReadFlagLabelingSchemeResource(Resource resource) {
  30             super(resource);
  31         }
  32
  33         @Override
  34         public Resource perform(ReadGraph graph) throws DatabaseException {
  35             DiagramResource DIA = DiagramResource.getInstance(graph);
  36             Resource scheme = graph.syncRequest(new PossibleObject(resource,
  37                     DIA.UsesLocalFlagLabelingScheme));
  38             return scheme;
  39         }
  40
  41     }
  42
  43     /**
  44      * Adapt {@link FlagLabelingScheme} instance from the resource describing
  45      * the currently active flag labeling scheme according to
  46      * {@link ReadFlagLabelingSchemeResource}.
  47      */
  48     public static class ReadFlagLabelingScheme extends ResourceRead<FlagLabelingScheme> {
  49
  50         public ReadFlagLabelingScheme(Resource resource) {
  51             super(resource);
  52         }
  53
  54         @Override
  55         public FlagLabelingScheme perform(ReadGraph graph) throws DatabaseException {
  56             DiagramResource DIA = DiagramResource.getInstance(graph);
  57             Resource scheme = graph.syncRequest(new ReadFlagLabelingSchemeResource(resource));
  58             if (scheme == null)
  59                 return graph.adapt(DIA.FlagLabelingScheme_Alphabetical, FlagLabelingScheme.class);
  60             return graph.adapt(scheme, FlagLabelingScheme.class);
  61         }
  62
  63     }
  64
  65     public static Resource getActiveFlagLabelingSchemeResource(RequestProcessor processor) throws DatabaseException {
  66         Resource project = Simantics.getProjectResource();
  67         if (project == null)
  68             throw new IllegalStateException("no project is active");
  69
  70         return processor.syncRequest(new ReadFlagLabelingSchemeResource(project));
  71     }
  72
  73     public static FlagLabelingScheme getActiveFlagLabelingScheme(RequestProcessor processor) throws DatabaseException {
  74         Resource project = Simantics.getProjectResource();
  75         if (project == null)
  76             throw new IllegalStateException("no project is active");
  77
  78         return processor.syncRequest(new ReadFlagLabelingScheme(project));
  79     }
  80
  81     public static void setProjectFlagLabelingScheme(Resource scheme) {
  82         Resource project = Simantics.getProjectResource();
  83         if (project == null)
  84             throw new IllegalStateException("no project is active");
  85         setFlagLabelingScheme(Simantics.getSession(), project, scheme);
  86     }
  87
  88     public static void setFlagLabelingScheme(Session session, final Resource forTarget, final Resource scheme) {
  89         session.asyncRequest(new WriteRequest() {
  90             @Override
  91             public void perform(WriteGraph graph) throws DatabaseException {
  92                 setFlagLabelingScheme(graph, forTarget, scheme);
  93             }
  94         }, new Callback<DatabaseException>() {
  95             @Override
  96             public void run(DatabaseException parameter) {
  97                 if (parameter != null)
  98                     ErrorLogger.defaultLogError(parameter);
  99             }
 100         });
 101     }
 102
 103     public static void setFlagLabelingScheme(WriteGraph graph, Resource forTarget, Resource scheme) throws DatabaseException {
 104         DiagramResource DIA = DiagramResource.getInstance(graph);
 105         graph.deny(forTarget, DIA.UsesLocalFlagLabelingScheme);
 106         graph.claim(forTarget, DIA.UsesLocalFlagLabelingScheme, scheme);
 107     }
 108
 109 }