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