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