Create and save map

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/*
 * Copyright 2019 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.create_and_save_map;

import java.util.Arrays;
import java.util.List;
import java.util.concurrent.ExecutionException;

import javafx.fxml.FXML;
import javafx.geometry.Insets;
import javafx.scene.control.Alert;
import javafx.scene.control.Button;
import javafx.scene.control.ComboBox;
import javafx.scene.control.ListCell;
import javafx.scene.control.ListView;
import javafx.scene.control.ProgressIndicator;
import javafx.scene.control.SelectionMode;
import javafx.scene.control.TextArea;
import javafx.scene.control.TextField;
import javafx.scene.layout.VBox;
import javafx.util.StringConverter;

import com.esri.arcgisruntime.concurrent.ListenableFuture;
import com.esri.arcgisruntime.layers.ArcGISMapImageLayer;
import com.esri.arcgisruntime.layers.Layer;
import com.esri.arcgisruntime.loadable.LoadStatus;
import com.esri.arcgisruntime.mapping.ArcGISMap;
import com.esri.arcgisruntime.mapping.Basemap;
import com.esri.arcgisruntime.mapping.BasemapStyle;
import com.esri.arcgisruntime.mapping.view.MapView;
import com.esri.arcgisruntime.portal.Portal;
import com.esri.arcgisruntime.portal.PortalFolder;
import com.esri.arcgisruntime.portal.PortalItem;
import com.esri.arcgisruntime.portal.PortalUserContent;
import com.esri.arcgisruntime.security.AuthenticationManager;
import com.esri.arcgisruntime.security.DefaultAuthenticationChallengeHandler;

public class CreateAndSaveMapController {

  @FXML private MapView mapView;
  @FXML private TextField title;
  @FXML private TextField tags;
  @FXML private TextArea description;
  @FXML private ComboBox<PortalFolder> folderList;
  @FXML private ListView<BasemapStyle> basemapStyleListView;
  @FXML private ListView<Layer> layersList;
  @FXML private Button saveButton;
  @FXML private ProgressIndicator progress;
  @FXML private VBox vBox;

  private ArcGISMap map;
  private Portal portal;

  @FXML
  private void initialize() {

    // set up the authentication manager to handle authentication challenges
    DefaultAuthenticationChallengeHandler defaultAuthenticationChallengeHandler = new DefaultAuthenticationChallengeHandler();
    AuthenticationManager.setAuthenticationChallengeHandler(defaultAuthenticationChallengeHandler);

    portal = new Portal("https://www.arcgis.com", true);
    portal.addDoneLoadingListener(() -> {
      if (portal.getLoadStatus() == LoadStatus.LOADED) {
        try {
          // get the users list of portal folders
          PortalUserContent portalUserContent = portal.getUser().fetchContentAsync().get();
          List<PortalFolder> portalFolders = portalUserContent.getFolders();
          folderList.getItems().addAll(portalFolders);
        } catch (Exception e) {
          e.printStackTrace();
        }

        saveButton.setDisable(false);

        // set the basemap style options
        basemapStyleListView.getItems().addAll(
          BasemapStyle.ARCGIS_STREETS,
          BasemapStyle.ARCGIS_IMAGERY_STANDARD,
          BasemapStyle.ARCGIS_TOPOGRAPHIC,
          BasemapStyle.ARCGIS_OCEANS);

        basemapStyleListView.setCellFactory(c -> new BasemapCell());
        // update the basemap when the selection changes
        basemapStyleListView.getSelectionModel().selectFirst();
        basemapStyleListView.getSelectionModel().selectedItemProperty().addListener(o -> {

          Basemap selectedBasemap = new Basemap(basemapStyleListView.getSelectionModel().getSelectedItem());
          map.setBasemap(selectedBasemap);
        });

        // create a map with the first basemap style option, and authenticate the basemap to access it using your API key
        map = new ArcGISMap(new Basemap(basemapStyleListView.getSelectionModel().getSelectedItem()));
        mapView.setMap(map);
        mapView.setViewInsets(new Insets(0, 0, 0, vBox.getWidth()));

        // set operational layer options
        ArcGISMapImageLayer worldElevation = new ArcGISMapImageLayer(
          "https://sampleserver6.arcgisonline.com/arcgis/rest/services/WorldTimeZones/MapServer");
        worldElevation.loadAsync();

        ArcGISMapImageLayer worldCensus = new ArcGISMapImageLayer(
          "https://sampleserver6.arcgisonline.com/arcgis/rest/services/Census/MapServer");
        worldCensus.loadAsync();

        layersList.getItems().addAll(worldElevation, worldCensus);
        layersList.getSelectionModel().setSelectionMode(SelectionMode.MULTIPLE);

        layersList.getSelectionModel().selectedItemProperty().addListener(o -> {
          map.getOperationalLayers().clear();
          map.getOperationalLayers().addAll(layersList.getSelectionModel().getSelectedItems());
        });

        layersList.setCellFactory(c -> new LayerCell());

        // set portal folder title converter
        folderList.setConverter(new StringConverter<>() {

          @Override
          public String toString(PortalFolder folder) {
            return folder != null ? folder.getTitle() : "";
          }

          @Override
          public PortalFolder fromString(String string) {
            return null;
          }
        });

      } else if (portal.getLoadStatus() == LoadStatus.FAILED_TO_LOAD) {

        // show alert message on error
        new Alert(Alert.AlertType.ERROR, "Authentication failed: " + portal.getLoadError().getMessage()).show();
      }
    });

    // load the portal info of a secured resource. This will invoke the authentication challenge
    portal.loadAsync();

  }

  /**
   * Shows a BasemapStyle title in a ListView.
   */
  private static class BasemapCell extends ListCell<BasemapStyle> {

    @Override
    protected void updateItem(BasemapStyle basemapStyle, boolean empty) {
      super.updateItem(basemapStyle, empty);
      setText(empty || basemapStyle == null ? null : basemapStyle.name());
      setGraphic(null);
    }
  }

  /**
   * Shows a Layer title in a ListView.
   */
  private static class LayerCell extends ListCell<Layer> {

    @Override
    protected void updateItem(Layer layer, boolean empty) {
      super.updateItem(layer, empty);
      setText(empty || layer == null ? null : layer.getName());
      setGraphic(null);
    }
  }

  /**
   * Save the map to the portal.
   */
  @FXML
  private void saveMap() {
    progress.setVisible(true);
    try {
      ListenableFuture<PortalItem> result = map.saveAsAsync(portal, folderList.getSelectionModel().getSelectedItem(),
        title.getText(), Arrays.asList(tags.getText().split(",")), description.getText(), null, true);
      result.addDoneListener(() -> {
        try {
          PortalItem portalItem = result.get();
          new Alert(Alert.AlertType.CONFIRMATION, "Map titled " + title.getText() + " saved to portal item with id: " + portalItem.getItemId()).show();
        } catch (InterruptedException | ExecutionException e) {
          new Alert(Alert.AlertType.ERROR, "Save Unsuccessful: " + e.getCause().getMessage()).show();
        } finally {
          progress.setVisible(false);
        }
      });
    } catch (Exception e) {
      progress.setVisible(false);
      new Alert(Alert.AlertType.ERROR, "Could not save map. " + e.getMessage()).show();
    }
  }

  /**
   * Stops and releases all resources used in application.
   */
  void terminate() {

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

}