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