org.simantics.district.network.ui/src/org/simantics/district/network/ui/participants/DistrictFinderVisualisationParticipant.java

   1 package org.simantics.district.network.ui.participants;
   2
   3 import java.awt.Color;
   4 import java.util.Iterator;
   5
   6 import org.eclipse.e4.core.services.events.IEventBroker;
   7 import org.eclipse.jface.viewers.StructuredSelection;
   8 import org.simantics.browsing.ui.common.AdaptableHintContext;
   9 import org.simantics.db.Resource;
  10 import org.simantics.db.layer0.SelectionHints;
  11 import org.simantics.diagram.elements.DiagramNodeUtil;
  12 import org.simantics.district.network.ui.adapters.DistrictNetworkEdgeElement;
  13 import org.simantics.district.network.ui.adapters.DistrictNetworkVertexElement;
  14 import org.simantics.district.network.ui.nodes.DistrictNetworkEdgeNode;
  15 import org.simantics.district.network.ui.nodes.DistrictNetworkVertexNode;
  16 import org.simantics.g2d.canvas.ICanvasContext;
  17 import org.simantics.g2d.diagram.participant.AbstractDiagramParticipant;
  18 import org.simantics.g2d.element.IElement;
  19 import org.simantics.scenegraph.g2d.G2DParentNode;
  20 import org.simantics.utils.datastructures.hints.IHintContext.Key;
  21 import org.simantics.utils.datastructures.hints.IHintContext.KeyOf;
  22
  23 public class DistrictFinderVisualisationParticipant extends AbstractDiagramParticipant {
  24
  25     private static final String TOPIC = "org/simantics/district/selection/elementQuerySelection";
  26
  27     private IEventBroker broker;
  28
  29     public DistrictFinderVisualisationParticipant(IEventBroker broker) {
  30         this.broker = broker;
  31     }
  32
  33     public static final Key COLOR_KEY = new KeyOf(Color.class, "COLOR");
  34
  35     @Override
  36     public void addedToContext(ICanvasContext ctx) {
  37         super.addedToContext(ctx);
  38
  39         broker.subscribe(TOPIC, event -> {
  40             StructuredSelection selection = (StructuredSelection) event.getProperty(IEventBroker.DATA);
  41             Iterator<?> iterator = selection.iterator();
  42             while (iterator.hasNext()) {
  43                 AdaptableHintContext next = (AdaptableHintContext) iterator.next();
  44                 Resource resource = next.getHint(SelectionHints.KEY_MAIN);
  45                 Color colorr = next.getHint(COLOR_KEY);
  46                 IElement element = DiagramNodeUtil.findElement(ctx, resource);
  47                 final G2DParentNode node = element.getHint(DistrictNetworkEdgeElement.KEY_DN_EDGE_NODE);
  48                 if (node != null) {
  49                     // color is a bit special - if not present then reset with null value
  50                     ((DistrictNetworkEdgeNode) node).setDynamicColor(colorr);
  51                     node.repaint();
  52                 } else {
  53                     final G2DParentNode vertexNode = element.getHint(DistrictNetworkVertexElement.KEY_DN_VERTEX_NODE);
  54                     ((DistrictNetworkVertexNode) vertexNode).setDynamicColor(colorr);
  55                     vertexNode.repaint();
  56                 }
  57             }
  58         });
  59     }
  60
  61     @Override
  62     public void removedFromContext(ICanvasContext ctx) {
  63         super.removedFromContext(ctx);
  64     }
  65 }