bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/diagramEditor/DiagramViewerSelectionProvider.java

   1 package org.simantics.modeling.ui.diagramEditor;\r
   2 \r
   3 import java.util.ArrayList;\r
   4 \r
   5 import org.eclipse.jface.viewers.ISelection;\r
   6 import org.eclipse.jface.viewers.StructuredSelection;\r
   7 import org.eclipse.ui.IWorkbenchPartSite;\r
   8 import org.simantics.Simantics;\r
   9 import org.simantics.browsing.ui.swt.AdaptableHintContext;\r
  10 import org.simantics.db.ReadGraph;\r
  11 import org.simantics.db.Resource;\r
  12 import org.simantics.db.common.request.ResourceRead;\r
  13 import org.simantics.db.common.request.ResourceRead2;\r
  14 import org.simantics.db.common.utils.RequestUtil;\r
  15 import org.simantics.db.exception.DatabaseException;\r
  16 import org.simantics.db.layer0.SelectionHints;\r
  17 import org.simantics.db.layer0.request.PossibleModel;\r
  18 import org.simantics.db.layer0.variable.Variable;\r
  19 import org.simantics.db.layer0.variable.Variables;\r
  20 import org.simantics.diagram.Logger;\r
  21 import org.simantics.diagram.flag.FlagUtil;\r
  22 import org.simantics.diagram.stubs.DiagramResource;\r
  23 import org.simantics.diagram.ui.DiagramModelHints;\r
  24 import org.simantics.diagram.ui.WorkbenchSelectionProvider;\r
  25 import org.simantics.g2d.diagram.IDiagram;\r
  26 import org.simantics.g2d.element.ElementHints;\r
  27 import org.simantics.g2d.element.ElementUtils;\r
  28 import org.simantics.g2d.element.IElement;\r
  29 import org.simantics.layer0.Layer0;\r
  30 import org.simantics.modeling.ModelingResources;\r
  31 import org.simantics.ui.SimanticsUI;\r
  32 import org.simantics.ui.selection.AnyResource;\r
  33 import org.simantics.ui.selection.AnyVariable;\r
  34 import org.simantics.ui.selection.WorkbenchSelectionContentType;\r
  35 import org.simantics.utils.DataContainer;\r
  36 import org.simantics.utils.threads.IThreadWorkQueue;\r
  37 import org.simantics.utils.ui.ErrorLogger;\r
  38 \r
  39 /**\r
  40  * @author Antti Villberg\r
  41  */\r
  42 public class DiagramViewerSelectionProvider extends WorkbenchSelectionProvider {\r
  43 \r
  44     protected static class SelectionElement extends AdaptableHintContext {\r
  45 \r
  46         final public Resource runtime;\r
  47         final public Resource element;\r
  48 \r
  49         public SelectionElement(Key[] keys, Resource runtime, Resource element) {\r
  50             super(keys);\r
  51             this.runtime = runtime;\r
  52             this.element = element;\r
  53         }\r
  54 \r
  55         @SuppressWarnings("unchecked")\r
  56         @Override\r
  57         public <T> T getContent(WorkbenchSelectionContentType<T> contentType) {\r
  58                 if(contentType instanceof AnyResource) return (T)element;\r
  59                 else if(contentType instanceof AnyVariable) {\r
  60                 AnyVariable type = (AnyVariable)contentType;\r
  61                 try {\r
  62                     return (T) type.processor.sync(new ResourceRead2<Variable>(runtime, element) {\r
  63                         @Override\r
  64                         public Variable perform(ReadGraph graph) throws DatabaseException {\r
  65 \r
  66                             DiagramResource DIA = DiagramResource.getInstance(graph);\r
  67                             ModelingResources MOD = ModelingResources.getInstance(graph);\r
  68                             Layer0 L0 = Layer0.getInstance(graph);\r
  69 \r
  70                             String uri = graph.getPossibleRelatedValue(resource, DIA.RuntimeDiagram_HasVariable);\r
  71                             if (uri == null)\r
  72                                 return null;\r
  73 \r
  74                             Variable var = Variables.getPossibleVariable(graph, uri);\r
  75                             if (var == null)\r
  76                                 return null;\r
  77 \r
  78                             Resource config = graph.getPossibleObject(resource2, MOD.ElementToComponent);\r
  79                             if (config == null) {\r
  80                                 if (graph.isInstanceOf(resource2, DIA.Connection)) {\r
  81                                     Variable v = FlagUtil.getPossibleConnectionSignal(graph, var, resource2, L0.Entity);\r
  82                                     if (v != null)\r
  83                                         return v;\r
  84                                 }\r
  85                                 // Apros #9646: if resource2 is the diagram\r
  86                                 // itself, return the diagram composite variable\r
  87                                 // since it is generally more useful than the\r
  88                                 // variable to the diagram.\r
  89                                 Resource composite = graph.getPossibleObject(resource2, MOD.DiagramToComposite);\r
  90                                 if (composite != null && composite.equals(var.getPossibleRepresents(graph))) {\r
  91                                     //return Variables.getPossibleVariable(graph, resource2);\r
  92                                     return var;\r
  93                                 }\r
  94                                 \r
  95                                 if(graph.isInstanceOf(resource2, DIA.Flag)) {\r
  96                                         Variable signal = FlagUtil.getPossibleFlagSignal(graph, var, resource2, L0.Entity);\r
  97                                         if(signal != null)\r
  98                                                 return signal;\r
  99                                 }\r
 100 \r
 101                                 return null;\r
 102                                 \r
 103                             }\r
 104 \r
 105                             return var.browsePossible(graph, config);\r
 106 \r
 107                         }\r
 108                     });\r
 109                 } catch (DatabaseException e) {\r
 110                     Logger.defaultLogError(e);\r
 111                 }\r
 112             } \r
 113             return null;\r
 114         }\r
 115 \r
 116     }\r
 117 \r
 118     protected DataContainer<IDiagram> sourceDiagram;\r
 119 \r
 120     public DiagramViewerSelectionProvider(IThreadWorkQueue queue, IWorkbenchPartSite site, DataContainer<IDiagram> sourceDiagram) {\r
 121         super(queue, site);\r
 122         assert(sourceDiagram != null);\r
 123         this.sourceDiagram = sourceDiagram;\r
 124     }\r
 125 \r
 126         @Override\r
 127         protected ISelection constructAdaptableSelection(Iterable<?> selection) {\r
 128                 ArrayList<Object> objects = new ArrayList<Object>();\r
 129                 IDiagram diagram = sourceDiagram.get();\r
 130                 if (diagram != null) {\r
 131                         Resource runtime = diagram.getHint(DiagramModelHints.KEY_DIAGRAM_RUNTIME_RESOURCE);\r
 132                         Resource dr = diagram.getHint(DiagramModelHints.KEY_DIAGRAM_RESOURCE);\r
 133                         for (Object o : selection) {\r
 134                                 Resource resource = getSelectionResource(o);\r
 135                                 if (resource != null) {\r
 136                                         objects.add( constructSelectionElement(runtime, resource) );\r
 137                                 } else {\r
 138                                         System.out.println("  unrecognized selection: " + o.getClass() + ": " + o);\r
 139                                 }\r
 140                         }\r
 141                         if (objects.isEmpty() && runtime != null && dr != null) {\r
 142                                 objects.add( constructSelectionElement(runtime, dr) );\r
 143                         }\r
 144                 }\r
 145                 return new StructuredSelection(objects);\r
 146         }\r
 147 \r
 148         protected Resource getSelectionResource(Object o) {\r
 149                 if (o instanceof IElement) {\r
 150                         IElement e = (IElement) o;\r
 151                         Object object = e.getHint(ElementHints.KEY_OBJECT);\r
 152                         if (object instanceof Resource)\r
 153                                 return (Resource) object;\r
 154                         object = ElementUtils.adaptElement(e, Resource.class);\r
 155                         if (object != null)\r
 156                                 return (Resource) object;\r
 157                 }\r
 158                 return null;\r
 159         }\r
 160 \r
 161         /**\r
 162          * @param runtime\r
 163          * @param object\r
 164          * @return\r
 165          */\r
 166         protected static SelectionElement constructSelectionElement(Resource runtime, Resource object) {\r
 167                 SelectionElement context = new SelectionElement(SelectionHints.STD_KEYS, runtime, object);\r
 168                 context.setHint(SelectionHints.KEY_MAIN, object);\r
 169                 if (runtime != null) {\r
 170                         context.setHint(SelectionHints.KEY_VARIABLE_RESOURCE, runtime);\r
 171                         try {\r
 172                                 Resource model = RequestUtil.trySyncRequest(\r
 173                                                 Simantics.getSession(),\r
 174                                                 SimanticsUI.UI_THREAD_REQUEST_START_TIMEOUT,\r
 175                                                 SimanticsUI.UI_THREAD_REQUEST_EXECUTION_TIMEOUT,\r
 176                                                 null,\r
 177                                                 new ModelOfRuntime(runtime));\r
 178                                 if (model != null)\r
 179                                         context.setHint(SelectionHints.KEY_MODEL, model);\r
 180                         } catch (DatabaseException | InterruptedException ex) {\r
 181                                 ErrorLogger.defaultLogError(ex);\r
 182                         }\r
 183                 }\r
 184                 return context;\r
 185         }\r
 186 \r
 187         private static class ModelOfRuntime extends ResourceRead<Resource> {\r
 188                 public ModelOfRuntime(Resource runtime) {\r
 189                         super(runtime);\r
 190                 }\r
 191 \r
 192                 @Override\r
 193                 public Resource perform(ReadGraph graph) throws DatabaseException {\r
 194                         DiagramResource DIA = DiagramResource.getInstance(graph);\r
 195                         String uri = graph.getPossibleRelatedValue(resource, DIA.RuntimeDiagram_HasModelURI);\r
 196                         if (uri != null) {\r
 197                                 Resource resource = graph.getPossibleResource(uri);\r
 198                                 if(resource != null) return resource;\r
 199                         }\r
 200                         Resource diagram = graph.getPossibleObject(resource, DIA.RuntimeDiagram_HasConfiguration);\r
 201                         if (diagram == null)\r
 202                                 return null;\r
 203                         return graph.syncRequest(new PossibleModel(diagram));\r
 204                 }\r
 205         }\r
 206 \r
 207 }