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

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