WMTS layer

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/*
 * Copyright 2017 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.wmts_layer;

import java.util.List;
import java.util.stream.Collectors;

import com.esri.arcgisruntime.layers.WmtsLayer;
import com.esri.arcgisruntime.loadable.LoadStatus;
import com.esri.arcgisruntime.mapping.ArcGISMap;
import com.esri.arcgisruntime.mapping.Basemap;
import com.esri.arcgisruntime.mapping.view.MapView;
import com.esri.arcgisruntime.ogc.wmts.WmtsLayerInfo;
import com.esri.arcgisruntime.ogc.wmts.WmtsService;
import com.esri.arcgisruntime.ogc.wmts.WmtsServiceInfo;
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Alert;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;

public class WmtsLayerSample extends Application {

  private MapView mapView;
  private WmtsService wmtsService;  // keep loadable in scope to avoid garbage collection

  @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("WMTS Layer Sample");
      stage.setWidth(800);
      stage.setHeight(700);
      stage.setScene(scene);
      stage.show();

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

      // create a WMTS service from a URL
      String serviceURL = "https://gibs.earthdata.nasa.gov/wmts/epsg4326/best";
      wmtsService = new WmtsService(serviceURL);
      wmtsService.addDoneLoadingListener(() -> {
        if (wmtsService.getLoadStatus() == LoadStatus.LOADED) {
          WmtsServiceInfo wmtsServiceInfo = wmtsService.getServiceInfo();
          // obtain the read only list of WMTS layer info objects, and select the one with the desired Id value.
          List<WmtsLayerInfo> wmtsLayerInfos = wmtsServiceInfo.getLayerInfos();
          WmtsLayerInfo layerInfo = wmtsLayerInfos.stream()
            .filter(layer -> layer.getId().equals("SRTM_Color_Index")).collect(Collectors.toList()).get(0);
          // create the WMTS layer with the LayerInfo
          WmtsLayer wmtsLayer = new WmtsLayer(layerInfo);
          map.setBasemap(new Basemap(wmtsLayer));
        } else {
          Alert alert = new Alert(Alert.AlertType.ERROR, "Failed to load WMTS layer");
          alert.show();
        }
      });
      wmtsService.loadAsync();

      // add the map view to stack pane
      stackPane.getChildren().addAll(mapView);
    } 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);
  }

}