org.simantics.district.network.ui/src/org/simantics/district/network/ui/styles/DistrictNetworkHoverInfoStyle.java

   1 package org.simantics.district.network.ui.styles;
   2
   3 import java.awt.geom.Point2D;
   4 import java.awt.geom.Rectangle2D;
   5 import java.util.Collections;
   6 import java.util.List;
   7
   8 import org.simantics.Simantics;
   9 import org.simantics.databoard.Bindings;
  10 import org.simantics.db.ReadGraph;
  11 import org.simantics.db.Resource;
  12 import org.simantics.db.common.procedure.adapter.TransientCacheListener;
  13 import org.simantics.db.common.request.ResourceRead;
  14 import org.simantics.db.exception.DatabaseException;
  15 import org.simantics.db.layer0.exception.MissingVariableException;
  16 import org.simantics.db.layer0.exception.MissingVariableValueException;
  17 import org.simantics.db.layer0.exception.PendingVariableException;
  18 import org.simantics.db.layer0.util.Layer0Utils;
  19 import org.simantics.db.layer0.variable.Variable;
  20 import org.simantics.db.layer0.variable.Variables;
  21 import org.simantics.diagram.stubs.DiagramResource;
  22 import org.simantics.district.network.DistrictNetworkUtil;
  23 import org.simantics.district.network.ontology.DistrictNetworkResource;
  24 import org.simantics.district.network.ui.nodes.DistrictNetworkEdgeNode;
  25 import org.simantics.district.network.ui.nodes.DistrictNetworkNodeUtils;
  26 import org.simantics.district.network.ui.nodes.DistrictNetworkVertexNode;
  27 import org.simantics.layer0.Layer0;
  28 import org.simantics.scenegraph.INode;
  29 import org.simantics.scl.compiler.top.ValueNotFound;
  30 import org.simantics.scl.osgi.SCLOsgi;
  31 import org.simantics.scl.runtime.SCLContext;
  32 import org.simantics.scl.runtime.function.Function1;
  33 import org.simantics.scl.runtime.tuple.Tuple3;
  34 import org.simantics.structural.stubs.StructuralResource2;
  35 import org.slf4j.Logger;
  36 import org.slf4j.LoggerFactory;
  37
  38 public class DistrictNetworkHoverInfoStyle {
  39
  40     private static final Logger LOGGER = LoggerFactory.getLogger(DistrictNetworkHoverInfoStyle.class);
  41
  42     private static final String ACTIONS_MODULE = "Actions";
  43     private static final String HOVER_CONTRIBUTION = "hoverContribution";
  44
  45     public static class StyleResult {
  46         Point2D origin;
  47         List<Tuple3> labels;
  48
  49         public StyleResult(Point2D origin, List<Tuple3> labels) {
  50             this.origin = origin;
  51             this.labels = labels;
  52         }
  53
  54         public Point2D getOrigin() {
  55             return origin;
  56         }
  57
  58         public List<Tuple3> getLabels() {
  59             return labels;
  60         }
  61     }
  62
  63     public static StyleResult doCalculateStyleResult(ReadGraph graph, Resource runtimeDiagram, Resource mapElement) throws DatabaseException {
  64         DiagramResource DIA = DiagramResource.getInstance(graph);
  65         StructuralResource2 STR = StructuralResource2.getInstance(graph);
  66
  67         String variableURI = graph.getPossibleRelatedValue(runtimeDiagram, DIA.RuntimeDiagram_HasVariable,
  68                 Bindings.STRING);
  69         Variable activeVariable = org.simantics.db.layer0.variable.Variables.getPossibleVariable(graph, variableURI);
  70         if (activeVariable == null)
  71             return null;
  72
  73         Resource module = DistrictNetworkUtil.getMappedComponentCached(graph, mapElement);
  74         if (module == null)
  75             return null;
  76
  77         Resource moduleType = graph.getPossibleType(module, STR.Component);
  78         if (moduleType == null)
  79             return null;
  80
  81         Function1<Variable, List<Tuple3>> function = getUCTextGridFunctionCached(graph, moduleType);
  82         if (function == null)
  83             return null;
  84
  85         List<Tuple3> result;
  86         try {
  87             Variable variable = Variables.getVariable(graph, module);
  88             Variable moduleVariable = Variables.possibleActiveVariable(graph, variable);
  89             if (moduleVariable == null)
  90                 moduleVariable = variable;
  91
  92             result = Simantics.applySCLRead(graph, function, moduleVariable);
  93         } catch (PendingVariableException | MissingVariableValueException e) {
  94             result = Collections.singletonList(new Tuple3("<pending>", "", ""));
  95         } catch (MissingVariableException e) {
  96             // the requested variable is missing from the UC
  97             String message = e.getMessage();
  98             LOGGER.warn("Missing variable for calculating style with function {} {}", function, message);
  99             result = Collections.singletonList(new Tuple3("<" + message + ">", "", ""));
 100         }
 101
 102         Point2D point = calculatePoint(graph, mapElement);
 103
 104         return new StyleResult(point, result);
 105     }
 106
 107     public static Point2D calculatePoint(ReadGraph graph, Resource mapElement) throws DatabaseException {
 108         Point2D point;
 109         DiagramResource DIA = DiagramResource.getInstance(graph);
 110         DistrictNetworkResource DN = DistrictNetworkResource.getInstance(graph);
 111         if (graph.isInstanceOf(mapElement, DN.Vertex)) {
 112             double[] coords = graph.getRelatedValue(mapElement, DIA.HasLocation);
 113             point = DistrictNetworkNodeUtils.calculatePoint2D(new Point2D.Double(coords[0], coords[1]), null);
 114         } else if (graph.isInstanceOf(mapElement, DN.Edge)) {
 115             Resource v1 = graph.getSingleObject(mapElement, DN.HasStartVertex);
 116             double[] coords1 = graph.getRelatedValue(v1, DIA.HasLocation);
 117             Resource v2 = graph.getSingleObject(mapElement, DN.HasEndVertex);
 118             double[] coords2 = graph.getRelatedValue(v2, DIA.HasLocation);
 119             point = DistrictNetworkNodeUtils.calculatePoint2D(
 120                     new Point2D.Double((coords1[0] + coords2[0]) / 2, (coords1[1] + coords2[1]) / 2), null);
 121         } else {
 122             return null;
 123         }
 124         return point;
 125     }
 126
 127     public static Point2D calculatePoint(INode node, int zoomLevel) {
 128         if (node instanceof DistrictNetworkVertexNode) {
 129             DistrictNetworkVertexNode vertex = (DistrictNetworkVertexNode) node;
 130             Rectangle2D b = vertex.getBounds();
 131             return new Point2D.Double(b.getCenterX(), b.getCenterY());
 132         } else if (node instanceof DistrictNetworkEdgeNode) {
 133             DistrictNetworkEdgeNode edge = (DistrictNetworkEdgeNode) node;
 134             return (Point2D) edge.getCenterPoint(zoomLevel).clone();
 135         }
 136         return null;
 137     }
 138
 139     private static Function1<Variable, List<Tuple3>> getUCTextGridFunctionCached(ReadGraph graph, Resource componentType)
 140              throws DatabaseException {
 141         return graph.syncRequest(new UCTextGridFunctionRequest(componentType), TransientCacheListener.instance());
 142     }
 143
 144     private static final class UCTextGridFunctionRequest extends ResourceRead<Function1<Variable, List<Tuple3>>> {
 145         public UCTextGridFunctionRequest(Resource resource) {
 146             super(resource);
 147         }
 148
 149         @SuppressWarnings("unchecked")
 150         @Override
 151         public Function1<Variable, List<Tuple3>> perform(ReadGraph graph) throws DatabaseException {
 152             Resource actionsModule = Layer0Utils.getPossibleChild(graph, resource, ACTIONS_MODULE);
 153             if (actionsModule == null || !graph.isInstanceOf(actionsModule, Layer0.getInstance(graph).SCLModule))
 154                 return null;
 155
 156             String uri = graph.getURI(actionsModule);
 157             SCLContext sclContext = SCLContext.getCurrent();
 158             Object oldGraph = sclContext.get("graph");
 159             try {
 160                 sclContext.put("graph", graph);
 161                 return (Function1<Variable, List<Tuple3>>) SCLOsgi.MODULE_REPOSITORY.getValue(uri, HOVER_CONTRIBUTION);
 162             } catch (ValueNotFound e1) {
 163                 return null;
 164             } finally {
 165                 sclContext.put("graph", oldGraph);
 166             }
 167         }
 168     }
 169
 170 }