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