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 \r
  69                             String uri = graph.getPossibleRelatedValue(resource, DIA.RuntimeDiagram_HasVariable);\r
  70                             if (uri == null)\r
  71                                 return null;\r
  72 \r
  73                             Variable var = Variables.getPossibleVariable(graph, uri);\r
  74                             if (var == null)\r
  75                                 return null;\r
  76 \r
  77                             Resource config = graph.getPossibleObject(resource2, MOD.ElementToComponent);\r
  78                             if (config == null) {\r
  79                                 // Apros #9646: if resource2 is the diagram\r
  80                                 // itself, return the diagram composite variable\r
  81                                 // since it is generally more useful than the\r
  82                                 // variable to the diagram.\r
  83                                 Resource composite = graph.getPossibleObject(resource2, MOD.DiagramToComposite);\r
  84                                 if (composite != null && composite.equals(var.getPossibleRepresents(graph))) {\r
  85                                     //return Variables.getPossibleVariable(graph, resource2);\r
  86                                     return var;\r
  87                                 }\r
  88                                 \r
  89                                 if(graph.isInstanceOf(resource2, DIA.Flag)) {\r
  90                                         Layer0 L0 = Layer0.getInstance(graph);\r
  91                                         Variable signal = FlagUtil.getPossibleFlagSignal(graph, var, resource2, L0.Entity);\r
  92                                         if(signal != null)\r
  93                                                 return signal;\r
  94                                 }\r
  95 \r
  96                                 return null;\r
  97                                 \r
  98                             }\r
  99 \r
 100                             return var.browsePossible(graph, config);\r
 101 \r
 102                         }\r
 103                     });\r
 104                 } catch (DatabaseException e) {\r
 105                     Logger.defaultLogError(e);\r
 106                 }\r
 107             } \r
 108             return null;\r
 109         }\r
 110 \r
 111     }\r
 112 \r
 113     protected DataContainer<IDiagram> sourceDiagram;\r
 114 \r
 115     public DiagramViewerSelectionProvider(IThreadWorkQueue queue, IWorkbenchPartSite site, DataContainer<IDiagram> sourceDiagram) {\r
 116         super(queue, site);\r
 117         assert(sourceDiagram != null);\r
 118         this.sourceDiagram = sourceDiagram;\r
 119     }\r
 120 \r
 121         @Override\r
 122         protected ISelection constructAdaptableSelection(Iterable<?> selection) {\r
 123                 ArrayList<Object> objects = new ArrayList<Object>();\r
 124                 IDiagram diagram = sourceDiagram.get();\r
 125                 if (diagram != null) {\r
 126                         Resource runtime = diagram.getHint(DiagramModelHints.KEY_DIAGRAM_RUNTIME_RESOURCE);\r
 127                         Resource dr = diagram.getHint(DiagramModelHints.KEY_DIAGRAM_RESOURCE);\r
 128                         for (Object o : selection) {\r
 129                                 Resource resource = getSelectionResource(o);\r
 130                                 if (resource != null) {\r
 131                                         objects.add( constructSelectionElement(runtime, resource) );\r
 132                                 } else {\r
 133                                         System.out.println("  unrecognized selection: " + o.getClass() + ": " + o);\r
 134                                 }\r
 135                         }\r
 136                         if (objects.isEmpty() && runtime != null && dr != null) {\r
 137                                 objects.add( constructSelectionElement(runtime, dr) );\r
 138                         }\r
 139                 }\r
 140                 return new StructuredSelection(objects);\r
 141         }\r
 142 \r
 143         protected Resource getSelectionResource(Object o) {\r
 144                 if (o instanceof IElement) {\r
 145                         IElement e = (IElement) o;\r
 146                         Object object = e.getHint(ElementHints.KEY_OBJECT);\r
 147                         if (object instanceof Resource)\r
 148                                 return (Resource) object;\r
 149                         object = ElementUtils.adaptElement(e, Resource.class);\r
 150                         if (object != null)\r
 151                                 return (Resource) object;\r
 152                 }\r
 153                 return null;\r
 154         }\r
 155 \r
 156         /**\r
 157          * @param runtime\r
 158          * @param object\r
 159          * @return\r
 160          */\r
 161         protected static SelectionElement constructSelectionElement(Resource runtime, Resource object) {\r
 162                 SelectionElement context = new SelectionElement(SelectionHints.STD_KEYS, runtime, object);\r
 163                 context.setHint(SelectionHints.KEY_MAIN, object);\r
 164                 if (runtime != null) {\r
 165                         context.setHint(SelectionHints.KEY_VARIABLE_RESOURCE, runtime);\r
 166                         try {\r
 167                                 Resource model = RequestUtil.trySyncRequest(\r
 168                                                 Simantics.getSession(),\r
 169                                                 SimanticsUI.UI_THREAD_REQUEST_START_TIMEOUT,\r
 170                                                 SimanticsUI.UI_THREAD_REQUEST_EXECUTION_TIMEOUT,\r
 171                                                 null,\r
 172                                                 new ModelOfRuntime(runtime));\r
 173                                 if (model != null)\r
 174                                         context.setHint(SelectionHints.KEY_MODEL, model);\r
 175                         } catch (DatabaseException | InterruptedException ex) {\r
 176                                 ErrorLogger.defaultLogError(ex);\r
 177                         }\r
 178                 }\r
 179                 return context;\r
 180         }\r
 181 \r
 182         private static class ModelOfRuntime extends ResourceRead<Resource> {\r
 183                 public ModelOfRuntime(Resource runtime) {\r
 184                         super(runtime);\r
 185                 }\r
 186 \r
 187                 @Override\r
 188                 public Resource perform(ReadGraph graph) throws DatabaseException {\r
 189                         DiagramResource DIA = DiagramResource.getInstance(graph);\r
 190                         String uri = graph.getPossibleRelatedValue(resource, DIA.RuntimeDiagram_HasModelURI);\r
 191                         if (uri != null) {\r
 192                                 Resource resource = graph.getPossibleResource(uri);\r
 193                                 if(resource != null) return resource;\r
 194                         }\r
 195                         Resource diagram = graph.getPossibleObject(resource, DIA.RuntimeDiagram_HasConfiguration);\r
 196                         if (diagram == null)\r
 197                                 return null;\r
 198                         return graph.syncRequest(new PossibleModel(diagram));\r
 199                 }\r
 200         }\r
 201 \r
 202 }