Access load status

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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.access_load_status;

import javafx.application.Application;
import javafx.application.Platform;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.TextArea;
import javafx.scene.layout.Background;
import javafx.scene.layout.BackgroundFill;
import javafx.scene.layout.CornerRadii;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Paint;
import javafx.stage.Stage;

import com.esri.arcgisruntime.ArcGISRuntimeEnvironment;
import com.esri.arcgisruntime.mapping.ArcGISMap;
import com.esri.arcgisruntime.mapping.BasemapStyle;
import com.esri.arcgisruntime.mapping.view.MapView;

public class AccessLoadStatusSample extends Application {

  private MapView mapView;
  private ArcGISMap map;

  @Override
  public void start(Stage stage) {

    try {
      // create stack pane and application scene
      StackPane stackPane = new StackPane();
      Scene scene = new Scene(stackPane);
      scene.getStylesheets().add(getClass().getResource("/access_load_status/style.css").toExternalForm());

      // set title, size, and add scene to stage
      stage.setTitle("Access Load Status 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 control panel
      var controlsVBox = new VBox(6);
      controlsVBox.setBackground(new Background(new BackgroundFill(Paint.valueOf("rgba(0,0,0,0.3)"), CornerRadii.EMPTY,
          Insets.EMPTY)));
      controlsVBox.setPadding(new Insets(10.0));
      controlsVBox.setMaxSize(210, 150);
      controlsVBox.getStyleClass().add("panel-region");

      // create area to display load status text
      var loadStatusLabel = new Label("Load Status");
      loadStatusLabel.getStyleClass().add("panel-label");
      TextArea loadStatusText = new TextArea();
      loadStatusText.setMaxHeight(200);

      var reloadMapButton = new Button("Reload ArcGISMap");
      reloadMapButton.setMaxWidth(Double.MAX_VALUE);

      // reload the map when the button is clicked
      reloadMapButton.setOnAction(event -> {
        loadStatusText.clear();

        // reload the map
        map = new ArcGISMap(BasemapStyle.ARCGIS_IMAGERY_STANDARD);

        map.loadStatusProperty().addListener((observable, oldValue, newValue) -> {
          // create and update a string variable depending on the load status
          String loadingStatus;
          switch (newValue) {
            case LOADING:
              loadingStatus = "Load Status: LOADING!";
              break;
            case FAILED_TO_LOAD:
              loadingStatus = "Load Status: FAILED TO LOAD!";
              break;
            case NOT_LOADED:
              loadingStatus = "Load Status: NOT LOADED!";
              break;
            case LOADED:
              loadingStatus = "Load Status: LOADED!";
              break;
            default:
              loadingStatus = "Load Status: ERROR!";
          }

          // update the load status text to the loading status that was fired
          Platform.runLater(() -> loadStatusText.appendText(loadingStatus + "\n"));
        });

        mapView.setMap(map);
      });

      // add label, text and button to the control panel
      controlsVBox.getChildren().addAll(loadStatusLabel, loadStatusText, reloadMapButton);

      // create a map with the standard imagery basemap style
      map = new ArcGISMap(BasemapStyle.ARCGIS_IMAGERY_STANDARD);

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

      // add the map view and control panel to stack pane
      stackPane.getChildren().addAll(mapView, controlsVBox);
      StackPane.setAlignment(controlsVBox, Pos.TOP_LEFT);
      StackPane.setMargin(controlsVBox, new Insets(10, 0, 0, 10));

    } 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);
  }

}