org.simantics.district.network.ui/src/org/simantics/district/network/ui/DistrictDiagramViewer.java

   1 package org.simantics.district.network.ui;
   2
   3 import java.awt.Color;
   4 import java.awt.geom.AffineTransform;
   5 import java.util.Collections;
   6 import java.util.Map;
   7 import java.util.Objects;
   8 import java.util.concurrent.TimeUnit;
   9 import java.util.function.Consumer;
  10 import java.util.function.Supplier;
  11
  12 import org.eclipse.e4.core.contexts.IEclipseContext;
  13 import org.eclipse.e4.core.services.events.IEventBroker;
  14 import org.eclipse.ui.PlatformUI;
  15 import org.simantics.datatypes.literal.RGB;
  16 import org.simantics.db.ReadGraph;
  17 import org.simantics.db.Resource;
  18 import org.simantics.db.common.request.PossibleIndexRoot;
  19 import org.simantics.db.common.request.UnaryRead;
  20 import org.simantics.db.exception.DatabaseException;
  21 import org.simantics.db.procedure.Listener;
  22 import org.simantics.diagram.ui.DiagramModelHints;
  23 import org.simantics.district.network.DistrictNetworkUtil;
  24 import org.simantics.district.network.ontology.DistrictNetworkResource;
  25 import org.simantics.district.network.ui.internal.Activator;
  26 import org.simantics.district.network.ui.nodes.DistrictRenderingPreparationNode;
  27 import org.simantics.district.network.ui.nodes.DistrictSelectionNode;
  28 import org.simantics.district.network.ui.participants.DNPointerInteractor;
  29 import org.simantics.district.network.ui.participants.DistrictFinderVisualisationParticipant;
  30 import org.simantics.district.network.ui.participants.DynamicVisualisationContributionsParticipant;
  31 import org.simantics.district.network.ui.participants.MapRulerPainter;
  32 import org.simantics.district.network.visualisations.DynamicVisualisations;
  33 import org.simantics.district.network.visualisations.model.ColorBarOptions;
  34 import org.simantics.district.network.visualisations.model.DynamicColorContribution;
  35 import org.simantics.district.network.visualisations.model.DynamicSizeContribution;
  36 import org.simantics.district.network.visualisations.model.SizeBarOptions;
  37 import org.simantics.g2d.canvas.ICanvasContext;
  38 import org.simantics.g2d.canvas.impl.CanvasContext;
  39 import org.simantics.g2d.diagram.handler.PickRequest.PickFilter;
  40 import org.simantics.g2d.diagram.participant.DelayedBatchElementPainter;
  41 import org.simantics.g2d.diagram.participant.ElementPainter;
  42 import org.simantics.g2d.diagram.participant.ElementPainterConfiguration;
  43 import org.simantics.g2d.diagram.participant.Selection;
  44 import org.simantics.g2d.diagram.participant.ZOrderHandler;
  45 import org.simantics.g2d.participant.BackgroundPainter;
  46 import org.simantics.g2d.participant.GridPainter;
  47 import org.simantics.g2d.participant.PanZoomRotateHandler;
  48 import org.simantics.g2d.participant.RenderingQualityInteractor;
  49 import org.simantics.g2d.participant.TransformUtil;
  50 import org.simantics.g2d.participant.ZoomToAreaHandler;
  51 import org.simantics.g2d.scenegraph.SceneGraphConstants;
  52 import org.simantics.maps.MapScalingTransform;
  53 import org.simantics.maps.eclipse.MapPainter;
  54 import org.simantics.maps.sg.commands.MapCommands;
  55 import org.simantics.modeling.ui.diagramEditor.DiagramViewer;
  56 import org.simantics.scenegraph.g2d.G2DParentNode;
  57 import org.simantics.scenegraph.g2d.events.command.Command;
  58 import org.simantics.scenegraph.g2d.events.command.CommandEvent;
  59 import org.simantics.scenegraph.g2d.events.command.Commands;
  60 import org.simantics.utils.datastructures.hints.IHintContext;
  61 import org.simantics.utils.datastructures.hints.IHintContext.Key;
  62 import org.simantics.utils.datastructures.hints.IHintContext.KeyOf;
  63 import org.slf4j.Logger;
  64 import org.slf4j.LoggerFactory;
  65
  66 public class DistrictDiagramViewer extends DiagramViewer {
  67
  68         private static final Logger LOGGER = LoggerFactory.getLogger(DistrictDiagramViewer.class);
  69
  70     @Override
  71     protected void addDiagramParticipants(ICanvasContext ctx) {
  72         ctx.add(new ZOrderHandler());
  73         ctx.add(new Selection());
  74         ctx.add(new ElementPainter(new ElementPainterConfiguration().selectionNodeClass(DistrictSelectionNode.class)));
  75         ctx.add(new DNPointerInteractor());
  76
  77         AffineTransform tr = new AffineTransform(MapScalingTransform.INSTANCE);
  78         ctx.add(new MapPainter(tr));
  79
  80         DynamicVisualisationContributionsParticipant dynamicVisualisationContributionsParticipant = new DynamicVisualisationContributionsParticipant(tr);
  81         ctx.add(new NetworkDrawingParticipant(dynamicVisualisationContributionsParticipant, tr));
  82         ctx.add(dynamicVisualisationContributionsParticipant);
  83
  84         // Optimize AffineTransform memory allocations during district diagram rendering
  85         G2DParentNode spatialRoot = (G2DParentNode) ctx.getSceneGraph().lookupNode(SceneGraphConstants.SPATIAL_ROOT_NODE_ID);
  86         DistrictRenderingPreparationNode prepNode = new DistrictRenderingPreparationNode();
  87         prepNode.setZIndex(Integer.MIN_VALUE / 2);
  88         spatialRoot.addNode("districtRenderingPrepareNode", prepNode);
  89
  90
  91         IEclipseContext workbenchContext = getWorkbenchContext();
  92         IEventBroker eventBroker = workbenchContext.get(IEventBroker.class);
  93         DistrictFinderVisualisationParticipant districtFinderVisualisationParticipant = new DistrictFinderVisualisationParticipant(eventBroker);
  94         ctx.add(districtFinderVisualisationParticipant);
  95
  96     }
  97
  98     public static IEclipseContext getWorkbenchContext(){
  99         return PlatformUI.getWorkbench().getService(IEclipseContext.class);
 100     }
 101
 102     protected String getPopupId() {
 103         return "#DistrictDiagramPopup";
 104     }
 105
 106     @Override
 107     protected void fillInitialDiagramHints(Resource diagram, IHintContext initialHints) throws DatabaseException {
 108         super.fillInitialDiagramHints(diagram, initialHints);
 109
 110     }
 111
 112     @Override
 113     public void initializeCanvasContext(CanvasContext ctx) {
 114         super.initializeCanvasContext(ctx);
 115         IHintContext h = ctx.getDefaultHintContext();
 116         h.setHint(PanZoomRotateHandler.KEY_ZOOM_IN_LIMIT, 10000.0);
 117         h.setHint(PanZoomRotateHandler.KEY_ZOOM_OUT_LIMIT, 0.01);
 118         h.setHint(DiagramModelHints.KEY_DIAGRAM_RESOURCE, diagramResource);
 119     }
 120
 121     @Override
 122     protected void addPainterParticipants(ICanvasContext ctx) {
 123         ctx.add(new RenderingQualityInteractor());
 124         ctx.add(new DelayedBatchElementPainter(PickFilter.FILTER_MONITORS, 500, TimeUnit.MILLISECONDS));
 125     }
 126
 127     @Override
 128     protected void addGridRulerBackgroundParticipants(CanvasContext ctx) {
 129         ctx.add(new GridPainter());
 130         ctx.add(new MapRulerPainter());
 131         ctx.add(new BackgroundPainter());
 132     }
 133
 134     protected void addViewManipulationParticipants(CanvasContext ctx) {
 135         // Let's replace with our special util
 136         TransformUtil util = ctx.getAtMostOneItemOfClass(TransformUtil.class);
 137         if (util != null)
 138             ctx.remove(util);
 139         ctx.add(new DistrictTransformUtil());
 140         ctx.add(new DistrictPanZoomRotateHandler());
 141         //ctx.add(new MousePanZoomInteractor());
 142         //ctx.add(new MultitouchPanZoomRotateInteractor());
 143         // ctx.add( new OrientationRestorer() );
 144         ctx.add(new ZoomToAreaHandler());
 145     }
 146
 147     @Override
 148     protected void loadPageSettings(ICanvasContext ctx) {
 149         super.loadPageSettings(ctx);
 150         // this might be the wrong place to start such listening but at least
 151         // super.loadPageSettings() does async-db-operations
 152         setupDrawMapEnabled();
 153         setupBackgroundColor();
 154         setupColoringObjects();
 155         setupColorBarOptions();
 156         setupSizingObjects();
 157         setupSizeBarOptions();
 158         setupShowElevationServerBoundingBox();
 159
 160         // add listeners
 161         DistrictDiagramViewerListener[] listeners = Activator.getInstance().getDistrictDiagramViewerListeners();
 162         if (listeners != null) {
 163             for (DistrictDiagramViewerListener listener : listeners) {
 164                 listener.diagramLoaded(getRuntime(), canvasContext);
 165             }
 166         }
 167     }
 168
 169     @Override
 170     public void dispose() {
 171         DistrictDiagramViewerListener[] listeners = Activator.getInstance().getDistrictDiagramViewerListeners();
 172         if (listeners != null) {
 173             Resource runtime = getRuntime();
 174             for (DistrictDiagramViewerListener listener : listeners) {
 175                 listener.diagramDisposed(runtime, canvasContext);
 176             }
 177         }
 178         super.dispose();
 179     }
 180
 181     private void setupDrawMapEnabled() {
 182         sessionContext.getSession().asyncRequest(new DrawMapEnabledRequest(getInputResource()), new DrawMapEnabledListener(
 183                 result -> canvasContext.getEventQueue().queueEvent(new CommandEvent(canvasContext, System.currentTimeMillis(), result ? Commands.MAP_ENABLE : Commands.MAP_DISABLE)),
 184                 () -> DistrictDiagramViewer.this.isDisposed()));
 185     }
 186
 187     private void setupBackgroundColor() {
 188         sessionContext.getSession().asyncRequest(new MapBackgroundColorRequest(getInputResource()), new MapBackgroundColorListener(
 189                 result -> queueBackgroundColorChangeEvent(result),
 190                 () -> DistrictDiagramViewer.this.isDisposed()));
 191     }
 192
 193     private void queueBackgroundColorChangeEvent(RGB.Integer result) {
 194         if (result != null) {
 195             Color backgroundColor = new Color(result.red, result.green, result.blue);
 196             canvasContext.getDefaultHintContext().setHint(MapCommands.KEY_MAP_BACKGROUND_COLOR, backgroundColor);
 197             canvasContext.getEventQueue().queueEvent(new CommandEvent(canvasContext, System.currentTimeMillis(), MapCommands.MAP_BACKGROUND_COLOR_CHANGE));
 198         }
 199     }
 200
 201     private void setupColoringObjects() {
 202         sessionContext.getSession().asyncRequest(new ColoringObjectsRequest(getInputResource()), new ColoringObjectsListener(
 203                 result -> queueColoringObjectsChangeEvent(result),
 204                 () -> DistrictDiagramViewer.this.isDisposed()));
 205     }
 206
 207
 208     private void setupColorBarOptions() {
 209         sessionContext.getSession().asyncRequest(new ColorBarOptionsRequest(getInputResource()), new ColorBarOptionsListener(
 210                 result -> queueColorBarOptionsChangeEvent(result),
 211                 () -> DistrictDiagramViewer.this.isDisposed()));
 212     }
 213
 214     private void setupSizingObjects() {
 215         sessionContext.getSession().asyncRequest(new SizingObjectsRequest(getInputResource()), new SizingObjectsListener(
 216                 result -> queueSizingObjectsChangeEvent(result),
 217                 () -> DistrictDiagramViewer.this.isDisposed()));
 218     }
 219
 220     private void setupSizeBarOptions() {
 221         sessionContext.getSession().asyncRequest(new SizeBarOptionsRequest(getInputResource()), new SizeBarOptionsListener(
 222                 result -> queueSizeBarOptionsChangeEvent(result),
 223                 () -> DistrictDiagramViewer.this.isDisposed()));
 224     }
 225
 226     private void setupShowElevationServerBoundingBox() {
 227         sessionContext.getSession().asyncRequest(new ShowElevationServerRequest(getInputResource()), new ShowElevationServerListener(
 228                 result -> queueShowElevationServerChangeEvent(result),
 229                 () -> DistrictDiagramViewer.this.isDisposed()));
 230     }
 231
 232     public static final Key KEY_MAP_COLOR_BAR_OPTIONS = new KeyOf(ColorBarOptions.class, "colorBarOptions");
 233     public static final Command MAP_COLOR_BAR_OPTIONS_CHANGE = new Command("colorBarOptionsChange");
 234     public static final Key KEY_MAP_SIZE_BAR_OPTIONS = new KeyOf(SizeBarOptions.class, "sizeBarOptions");
 235     public static final Command MAP_SIZE_BAR_OPTIONS_CHANGE = new Command("sizeBarOptionsChange");
 236
 237     public static final Key KEY_MAP_COLORING_OBJECTS = new KeyOf(Map.class, "coloringObjects");
 238     public static final Command MAP_COLORING_OBJECTS_CHANGE = new Command("coloringObjectsChange");
 239
 240     public static final Key KEY_MAP_SIZING_OBJECTS = new KeyOf(Map.class, "sizingObjects");
 241     public static final Command MAP_SIZING_OBJECTS_CHANGE = new Command("sizingObjectsChange");
 242
 243     public static final Key KEY_SHOW_ELEVATION_SERVER = new KeyOf(Boolean.class, "showElevationServer");
 244     public static final Command SHOW_ELEVATION_SERVER_CHANGE = new Command("showElevationServerChange");
 245
 246     private void queueColoringObjectsChangeEvent(Map<String, DynamicColorContribution> result) {
 247         queueEventInternal(KEY_MAP_COLORING_OBJECTS, MAP_COLORING_OBJECTS_CHANGE, result);
 248     }
 249
 250     private void queueColorBarOptionsChangeEvent(ColorBarOptions result) {
 251         queueEventInternal(KEY_MAP_COLOR_BAR_OPTIONS, MAP_COLOR_BAR_OPTIONS_CHANGE, result);
 252     }
 253
 254     private void queueSizingObjectsChangeEvent(Map<String, DynamicSizeContribution> result) {
 255         queueEventInternal(KEY_MAP_SIZING_OBJECTS, MAP_SIZING_OBJECTS_CHANGE, result);
 256     }
 257
 258     private void queueSizeBarOptionsChangeEvent(SizeBarOptions result) {
 259         queueEventInternal(KEY_MAP_SIZE_BAR_OPTIONS, MAP_SIZE_BAR_OPTIONS_CHANGE, result);
 260     }
 261
 262     private void queueShowElevationServerChangeEvent(Boolean result) {
 263         queueEventInternal(KEY_SHOW_ELEVATION_SERVER, SHOW_ELEVATION_SERVER_CHANGE, result);
 264     }
 265
 266     private void queueEventInternal(Key key, Command command, Object result) {
 267         if (result != null && !canvasContext.isDisposed()) {
 268             canvasContext.getThreadAccess().asyncExec(() -> {
 269                 canvasContext.getDefaultHintContext().setHint(key, result);
 270                 canvasContext.getEventQueue().queueEvent(new CommandEvent(canvasContext, System.currentTimeMillis(), command));
 271             });
 272         } else {
 273             LOGGER.info("Result is either null or canvasContext is disposed", String.valueOf(result));
 274         }
 275     }
 276
 277     private static class DrawMapEnabledRequest extends UnaryRead<Resource, Boolean> {
 278
 279         public DrawMapEnabledRequest(Resource diagram) {
 280             super(diagram);
 281         }
 282
 283         @Override
 284         public Boolean perform(ReadGraph graph) throws DatabaseException {
 285             return DistrictNetworkUtil.drawMapEnabled(graph, parameter);
 286         }
 287     }
 288
 289     private static class DrawMapEnabledListener implements Listener<Boolean> {
 290
 291         private static final Logger LOGGER = LoggerFactory.getLogger(DrawMapEnabledListener.class);
 292
 293         private Consumer<Boolean> callback;
 294         private Supplier<Boolean> isDisposed;
 295
 296         private Boolean lastResult;
 297
 298         public DrawMapEnabledListener(Consumer<Boolean> callback, Supplier<Boolean> isDisposed) {
 299             this.callback = callback;
 300             this.isDisposed = isDisposed;
 301         }
 302
 303         @Override
 304         public void execute(Boolean result) {
 305             // Minor optimization
 306             if (!Objects.equals(lastResult, result)) {
 307                 lastResult = result;
 308                 callback.accept(result);
 309             }
 310         }
 311
 312         @Override
 313         public void exception(Throwable t) {
 314             LOGGER.error("Could not listen if draw map is enabled", t);
 315         }
 316
 317         @Override
 318         public boolean isDisposed() {
 319             return isDisposed.get();
 320         }
 321     }
 322
 323     private static class MapBackgroundColorRequest extends UnaryRead<Resource, RGB.Integer> {
 324
 325         public MapBackgroundColorRequest(Resource diagram) {
 326             super(diagram);
 327         }
 328
 329         @Override
 330         public RGB.Integer perform(ReadGraph graph) throws DatabaseException {
 331             return DistrictNetworkUtil.backgroundColor(graph, parameter);
 332         }
 333     }
 334
 335     private static class MapBackgroundColorListener implements Listener<RGB.Integer> {
 336
 337         private static final Logger LOGGER = LoggerFactory.getLogger(MapBackgroundColorListener.class);
 338
 339         private Consumer<RGB.Integer> callback;
 340         private Supplier<Boolean> isDisposed;
 341
 342         private RGB.Integer lastResult;
 343
 344         public MapBackgroundColorListener(Consumer<RGB.Integer> callback, Supplier<Boolean> isDisposed) {
 345             this.callback = callback;
 346             this.isDisposed = isDisposed;
 347         }
 348
 349         @Override
 350         public void execute(RGB.Integer result) {
 351             if (!Objects.equals(lastResult, result)) {
 352                 lastResult = result;
 353                 callback.accept(result);
 354             }
 355         }
 356
 357         @Override
 358         public void exception(Throwable t) {
 359             LOGGER.error("Could not listen map background color", t);
 360         }
 361
 362         @Override
 363         public boolean isDisposed() {
 364             return isDisposed.get();
 365         }
 366     }
 367
 368     private static class ColorBarOptionsRequest extends UnaryRead<Resource, ColorBarOptions> {
 369
 370         public ColorBarOptionsRequest(Resource diagram) {
 371             super(diagram);
 372         }
 373
 374         @Override
 375         public ColorBarOptions perform(ReadGraph graph) throws DatabaseException {
 376             DistrictNetworkResource DN = DistrictNetworkResource.getInstance(graph);
 377             Resource model = graph.syncRequest(new PossibleIndexRoot(parameter));
 378             if (model != null) {
 379                 Resource vf = DynamicVisualisations.getVisualisationFolder(graph, model);
 380                 if (vf != null) {
 381                     Resource activeVisualisation = graph.getPossibleObject(vf, DN.Diagram_hasActiveVisualisation);
 382                     if (activeVisualisation != null) {
 383                         return DynamicVisualisations.colorBarOptions(graph, activeVisualisation);
 384                     }
 385                 } else {
 386                     LOGGER.debug("No visualisation folder available for model {}", model);
 387                 }
 388             }
 389             return ColorBarOptions.useDefault();
 390         }
 391     }
 392
 393     private static class ColoringObjectsRequest extends UnaryRead<Resource, Map<String,DynamicColorContribution>> {
 394
 395         public ColoringObjectsRequest(Resource diagram) {
 396             super(diagram);
 397         }
 398
 399         @Override
 400         public Map<String, DynamicColorContribution> perform(ReadGraph graph) throws DatabaseException {
 401             DistrictNetworkResource DN = DistrictNetworkResource.getInstance(graph);
 402             Resource model = graph.syncRequest(new PossibleIndexRoot(parameter));
 403             if (model != null) {
 404                 Resource vf = DynamicVisualisations.getVisualisationFolder(graph, model);
 405                 if (vf != null) {
 406                     Resource activeVisualisation = graph.getPossibleObject(vf, DN.Diagram_hasActiveVisualisation);
 407                     if (activeVisualisation != null) {
 408                         return DynamicVisualisations.colorContributions(graph, activeVisualisation);
 409                     }
 410                 } else {
 411                     LOGGER.debug("No visualisation folder available for model {}", model);
 412                 }
 413             }
 414             return Collections.emptyMap();
 415         }
 416     }
 417
 418     private static class ColoringObjectsListener implements Listener<Map<String,DynamicColorContribution>> {
 419
 420         private static final Logger LOGGER = LoggerFactory.getLogger(ColoringObjectsListener.class);
 421
 422         private Consumer<Map<String,DynamicColorContribution>> callback;
 423         private Supplier<Boolean> isDisposed;
 424
 425         //private Map<String, DynamicColorContribution> lastResult
 426
 427         public ColoringObjectsListener(Consumer<Map<String,DynamicColorContribution>> callback, Supplier<Boolean> isDisposed) {
 428             this.callback = callback;
 429             this.isDisposed = isDisposed;
 430         }
 431
 432         @Override
 433         public void execute(Map<String,DynamicColorContribution> result) {
 434             callback.accept(result);
 435         }
 436
 437         @Override
 438         public void exception(Throwable t) {
 439             LOGGER.error("Could not listen ColoringObjects", t);
 440         }
 441
 442         @Override
 443         public boolean isDisposed() {
 444             return isDisposed.get();
 445         }
 446     }
 447
 448     private static class ColorBarOptionsListener implements Listener<ColorBarOptions> {
 449
 450         private static final Logger LOGGER = LoggerFactory.getLogger(ColorBarOptionsListener.class);
 451
 452         private Consumer<ColorBarOptions> callback;
 453         private Supplier<Boolean> isDisposed;
 454
 455         public ColorBarOptionsListener(Consumer<ColorBarOptions> callback, Supplier<Boolean> isDisposed) {
 456             this.callback = callback;
 457             this.isDisposed = isDisposed;
 458         }
 459
 460         @Override
 461         public void execute(ColorBarOptions result) {
 462             callback.accept(result);
 463         }
 464
 465         @Override
 466         public void exception(Throwable t) {
 467             LOGGER.error("Could not listen ColorBarOptions", t);
 468         }
 469
 470         @Override
 471         public boolean isDisposed() {
 472             return isDisposed.get();
 473         }
 474     }
 475
 476     private static class SizeBarOptionsRequest extends UnaryRead<Resource, SizeBarOptions> {
 477
 478         public SizeBarOptionsRequest(Resource diagram) {
 479             super(diagram);
 480         }
 481
 482         @Override
 483         public SizeBarOptions perform(ReadGraph graph) throws DatabaseException {
 484             DistrictNetworkResource DN = DistrictNetworkResource.getInstance(graph);
 485             Resource model = graph.syncRequest(new PossibleIndexRoot(parameter));
 486             if (model != null) {
 487                 Resource vf = DynamicVisualisations.getVisualisationFolder(graph, model);
 488                 if (vf != null) {
 489                     Resource activeVisualisation = graph.getPossibleObject(vf, DN.Diagram_hasActiveVisualisation);
 490                     if (activeVisualisation != null) {
 491                         return DynamicVisualisations.sizeBarOptions(graph, activeVisualisation);
 492                     }
 493                 } else {
 494                     LOGGER.debug("No visualisation folder available for model {}", model);
 495                 }
 496             }
 497             return SizeBarOptions.useDefault();
 498         }
 499     }
 500
 501     private static class SizeBarOptionsListener implements Listener<SizeBarOptions> {
 502
 503         private static final Logger LOGGER = LoggerFactory.getLogger(SizeBarOptionsListener.class);
 504
 505         private Consumer<SizeBarOptions> callback;
 506         private Supplier<Boolean> isDisposed;
 507
 508         public SizeBarOptionsListener(Consumer<SizeBarOptions> callback, Supplier<Boolean> isDisposed) {
 509             this.callback = callback;
 510             this.isDisposed = isDisposed;
 511         }
 512
 513         @Override
 514         public void execute(SizeBarOptions result) {
 515             callback.accept(result);
 516         }
 517
 518         @Override
 519         public void exception(Throwable t) {
 520             LOGGER.error("Could not listen SizeBarOptions", t);
 521         }
 522
 523         @Override
 524         public boolean isDisposed() {
 525             return isDisposed.get();
 526         }
 527     }
 528
 529     private static class SizingObjectsRequest extends UnaryRead<Resource, Map<String, DynamicSizeContribution>> {
 530
 531         public SizingObjectsRequest(Resource diagram) {
 532             super(diagram);
 533         }
 534
 535         @Override
 536         public Map<String, DynamicSizeContribution> perform(ReadGraph graph) throws DatabaseException {
 537             DistrictNetworkResource DN = DistrictNetworkResource.getInstance(graph);
 538             Resource model = graph.syncRequest(new PossibleIndexRoot(parameter));
 539             if (model != null) {
 540                 Resource vf = DynamicVisualisations.getVisualisationFolder(graph, model);
 541                 if (vf != null) {
 542                     Resource activeVisualisation = graph.getPossibleObject(vf, DN.Diagram_hasActiveVisualisation);
 543                     if (activeVisualisation != null) {
 544                         return DynamicVisualisations.sizeContributions(graph, activeVisualisation);
 545                     }
 546                 } else {
 547                     LOGGER.debug("No visualisation folder available for model {}", model);
 548                 }
 549             }
 550             return Collections.emptyMap();
 551         }
 552     }
 553
 554     private static class SizingObjectsListener implements Listener<Map<String,DynamicSizeContribution>> {
 555
 556         private static final Logger LOGGER = LoggerFactory.getLogger(SizingObjectsListener.class);
 557
 558         private Consumer<Map<String,DynamicSizeContribution>> callback;
 559         private Supplier<Boolean> isDisposed;
 560
 561         public SizingObjectsListener(Consumer<Map<String, DynamicSizeContribution>> callback, Supplier<Boolean> isDisposed) {
 562             this.callback = callback;
 563             this.isDisposed = isDisposed;
 564         }
 565
 566         @Override
 567         public void execute(Map<String, DynamicSizeContribution> result) {
 568             callback.accept(result);
 569         }
 570
 571         @Override
 572         public void exception(Throwable t) {
 573             LOGGER.error("Could not listen SizingObjectsOptions", t);
 574         }
 575
 576         @Override
 577         public boolean isDisposed() {
 578             return isDisposed.get();
 579         }
 580     }
 581
 582     private static class ShowElevationServerRequest extends UnaryRead<Resource, Boolean> {
 583
 584         public ShowElevationServerRequest(Resource diagram) {
 585             super(diagram);
 586         }
 587
 588         @Override
 589         public Boolean perform(ReadGraph graph) throws DatabaseException {
 590             DistrictNetworkResource DN = DistrictNetworkResource.getInstance(graph);
 591             Resource model = graph.syncRequest(new PossibleIndexRoot(parameter));
 592             if (model != null) {
 593                 Resource vf = DynamicVisualisations.getVisualisationFolder(graph, model);
 594                 if (vf != null) {
 595                     Resource activeVisualisation = graph.getPossibleObject(vf, DN.Diagram_hasActiveVisualisation);
 596                     if (activeVisualisation != null) {
 597                         return DynamicVisualisations.showElevationServerBoundingBox(graph, activeVisualisation);
 598                     }
 599                 } else {
 600                     LOGGER.debug("No visualisation folder available for model {}", model);
 601                 }
 602             }
 603             return false;
 604         }
 605     }
 606
 607     private static class ShowElevationServerListener implements Listener<Boolean> {
 608
 609         private static final Logger LOGGER = LoggerFactory.getLogger(ShowElevationServerListener.class);
 610
 611         private Consumer<Boolean> callback;
 612         private Supplier<Boolean> isDisposed;
 613
 614         public ShowElevationServerListener(Consumer<Boolean> callback, Supplier<Boolean> isDisposed) {
 615             this.callback = callback;
 616             this.isDisposed = isDisposed;
 617         }
 618
 619         @Override
 620         public void execute(Boolean result) {
 621             callback.accept(result);
 622         }
 623
 624         @Override
 625         public void exception(Throwable t) {
 626             LOGGER.error("Could not listen Show Elevation Server", t);
 627         }
 628
 629         @Override
 630         public boolean isDisposed() {
 631             return isDisposed.get();
 632         }
 633     }
 634 }