Display clusters

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/*
 * Copyright 2024 Esri.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

package com.esri.samples.display_clusters;

import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import com.esri.arcgisruntime.ArcGISRuntimeEnvironment;
import com.esri.arcgisruntime.concurrent.ListenableFuture;
import com.esri.arcgisruntime.geometry.Point;
import com.esri.arcgisruntime.layers.FeatureLayer;
import com.esri.arcgisruntime.loadable.LoadStatus;
import com.esri.arcgisruntime.mapping.ArcGISMap;
import com.esri.arcgisruntime.mapping.popup.Popup;
import com.esri.arcgisruntime.mapping.view.Callout;
import com.esri.arcgisruntime.mapping.view.IdentifyLayerResult;
import com.esri.arcgisruntime.mapping.view.MapView;
import com.esri.arcgisruntime.portal.Portal;
import com.esri.arcgisruntime.portal.PortalItem;
import javafx.application.Application;
import javafx.geometry.Point2D;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.ToggleButton;
import javafx.scene.layout.Pane;
import javafx.scene.web.WebEngine;
import javafx.scene.web.WebView;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;

public class DisplayClustersSample extends Application {

  private ArcGISMap map;
  private MapView mapView;
  private PortalItem portalItem; // keep loadable in scope to avoid garbage collection
  private FeatureLayer powerPlantsLayer;
  private Callout callout;
  private WebEngine webEngine;

  @Override
  public void start(Stage stage) {

    try {
      // create stack pane and application scene
      StackPane stackPane = new StackPane();
      Scene scene = new Scene(stackPane);

      // set title, size, and add scene to stage
      stage.setTitle("Display Clusters Sample");
      stage.setWidth(800);
      stage.setHeight(700);
      stage.setScene(scene);
      stage.show();

      // authentication with an API key or named user is required to access basemaps and other location services
      String yourAPIKey = System.getProperty("apiKey");
      ArcGISRuntimeEnvironment.setApiKey(yourAPIKey);

      // create a button to toggle clustering
      ToggleButton featureClusteringToggle = new ToggleButton("Toggle Feature Clustering");
      featureClusteringToggle.setDisable(true);
      // The cluster layer is enabled by default, so let's also set the togglebutton toggled
      featureClusteringToggle.setSelected(true);

      // create a portal and portal item, using the portal and item ID
      var portal = new Portal("https://www.arcgis.com/");
      portalItem = new PortalItem(portal, "8916d50c44c746c1aafae001552bad23");

      map = new ArcGISMap(portalItem);
      map.addDoneLoadingListener(() -> {
        if (map.getLoadStatus() == LoadStatus.LOADED) {
          featureClusteringToggle.setDisable(false);

          powerPlantsLayer = (FeatureLayer)map.getOperationalLayers().get(0);

          WebView webView = new WebView();
          webView.setMaxHeight(200);
          webView.setMaxWidth(150);
          Pane region = new Pane();
          callout = mapView.getCallout();
          callout.setCustomView(region);
          webEngine = webView.getEngine();
          region.getChildren().add(webView);

          // when the button is clicked, toggle the feature clustering
          mapView.setOnMouseClicked(mouseEvent -> {
            if (mapView == null) {
              return;
            }

            mapView.getCallout().dismiss();
            Point2D point = new Point2D(mouseEvent.getX(), mouseEvent.getY());
            ListenableFuture<IdentifyLayerResult> identifiedLayerResultsFuture = mapView.identifyLayerAsync(powerPlantsLayer, point, 3.0, false);
            identifiedLayerResultsFuture.addDoneListener(() -> {
              IdentifyLayerResult identifiedLayerResults = null;
              try {
                identifiedLayerResults = identifiedLayerResultsFuture.get(10, TimeUnit.SECONDS);
                if (identifiedLayerResults == null || identifiedLayerResults.getPopups().isEmpty()) {
                  return;
                }

                Popup popup = identifiedLayerResults.getPopups().get(0);

                String htmlText = popup.getDescription();

                webEngine.loadContent(htmlText);

                callout.screenToLocal(point);
                // show the callout where the user clicked
                Point mapPoint = mapView.screenToLocation(point);
                callout.showCalloutAt(mapPoint);

              } catch (TimeoutException | ExecutionException | InterruptedException e) {
                throw new RuntimeException(e);
              }
            });
          });

          featureClusteringToggle.setOnAction(event -> {
            powerPlantsLayer.getFeatureReduction().setEnabled(!powerPlantsLayer.getFeatureReduction().isEnabled());
            mapView.getCallout().dismiss();
          });
        }
      });

      // create a map view and set the map to it
      mapView = new MapView();
      mapView.setMap(map);

      // add the map view, button, and progress bar to stack pane
      stackPane.getChildren().addAll(mapView, featureClusteringToggle);
      StackPane.setAlignment(featureClusteringToggle, Pos.TOP_RIGHT);

    } catch (Exception e) {
      // on any error, display the stack trace.
      e.printStackTrace();
    }
  }

  /**
   * Stops and releases all resources used in application.
   */
  @Override
  public void stop() {

    if (mapView != null) {
      mapView.dispose();
    }
  }

  /**
   * Opens and runs application.
   *
   * @param args arguments passed to this application
   */
  public static void main(String[] args) {

    Application.launch(args);
  }

}