Format coordinates

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/*
 * Copyright 2018 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.format_coordinates;

import com.esri.arcgisruntime.ArcGISRuntimeException;
import com.esri.arcgisruntime.geometry.CoordinateFormatter;
import com.esri.arcgisruntime.geometry.Point;
import com.esri.arcgisruntime.layers.ArcGISTiledLayer;
import com.esri.arcgisruntime.mapping.ArcGISMap;
import com.esri.arcgisruntime.mapping.Basemap;
import com.esri.arcgisruntime.mapping.view.Callout;
import com.esri.arcgisruntime.mapping.view.MapView;
import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.geometry.Point2D;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
import javafx.scene.input.MouseButton;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

public class FormatCoordinatesSample extends Application {

  private MapView mapView;
  private Callout callout;
  private Label decimalDegreesLabel;
  private Label degMinSecLabel;
  private Label utmLabel;
  private Label usngLabel;

  @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("Format Coordinates Sample");
      stage.setWidth(800);
      stage.setHeight(700);
      stage.setScene(scene);
      stage.show();

      // create a map with a wgs84 basemap and set it to the map view
      mapView = new MapView();
      ArcGISTiledLayer basemapLayer = new ArcGISTiledLayer("https://wi.maptiles.arcgis" +
        ".com/arcgis/rest/services/World_Imagery/MapServer");
      Basemap basemap = new Basemap(basemapLayer);
      ArcGISMap map = new ArcGISMap(basemap);
      mapView.setMap(map);

      // configure the callout to show coordinate information
      callout = mapView.getCallout();
      decimalDegreesLabel = new Label();
      degMinSecLabel = new Label();
      utmLabel  = new Label();
      usngLabel  = new Label();
      var calloutVBox = new VBox();
      calloutVBox.setMinWidth(400);
      calloutVBox.setMaxWidth(400);
      calloutVBox.getChildren().addAll(decimalDegreesLabel, degMinSecLabel, utmLabel, usngLabel);
      callout.setCustomView(calloutVBox);

      // click event to display the callout with the formatted coordinates of the clicked location
      mapView.setOnMouseClicked(e -> {
        // check that the primary mouse button was clicked and user is not panning
        if (e.isStillSincePress() && e.getButton() == MouseButton.PRIMARY) {
          // get the map point where the user clicked
          Point2D point = new Point2D(e.getX(), e.getY());
          Point mapPoint = mapView.screenToLocation(point);
          // show the callout at the point with the different coordinate format strings
          showCalloutWithLocationCoordinates(mapPoint);
        }
      });

      // create text field to input user's own coordinate string
      TextField input = new TextField();
      input.setMaxWidth(300);
      input.setPromptText("Input a coordinate string (LatLon, UTM, or USNG)");
      input.setOnAction(e -> {
        String inputText = input.getText();
        if (!"".equals(inputText)) {
          // try each coordinate format converter, use the first one with the correct format
          try {
            Point point = CoordinateFormatter.fromLatitudeLongitude(inputText, map.getSpatialReference());
            showCalloutWithLocationCoordinates(point);
            return;
          } catch (ArcGISRuntimeException ex) {
            // ignore, wrong format
          }
          try {
            Point point = CoordinateFormatter.fromUtm(inputText, map.getSpatialReference(), CoordinateFormatter.UtmConversionMode.LATITUDE_BAND_INDICATORS);
            showCalloutWithLocationCoordinates(point);
            return;
          } catch (ArcGISRuntimeException ex) {
            // ignore, wrong format
          }
          try {
            Point point = CoordinateFormatter.fromUsng(inputText, map.getSpatialReference());
            showCalloutWithLocationCoordinates(point);
          } catch (ArcGISRuntimeException ex) {
            // ignore, wrong format
          }
        }
      });

      // add map view and text field to stack pane
      stackPane.getChildren().addAll(mapView, input);
      StackPane.setAlignment(input, Pos.TOP_LEFT);
      StackPane.setMargin(input, new Insets(10, 0, 0, 10));
    } catch (Exception e) {
      // on any error, print the stack trace
      e.printStackTrace();
    }
  }

  /**
   * Shows a callout at the specified location with different coordinate formats displayed within the callout view.
   *
   * @param location coordinate to show coordinate formats for
   */
  private void showCalloutWithLocationCoordinates(Point location) {
    // update callout content to show information for provided location
    decimalDegreesLabel.setText("Decimal Degrees: " +
      CoordinateFormatter.toLatitudeLongitude(location, CoordinateFormatter.LatitudeLongitudeFormat.DECIMAL_DEGREES, 4));
    degMinSecLabel.setText("DMS: " +
      CoordinateFormatter.toLatitudeLongitude(location, CoordinateFormatter.LatitudeLongitudeFormat.DEGREES_MINUTES_SECONDS, 1));
    utmLabel.setText("UTM: " +
      CoordinateFormatter.toUtm(location, CoordinateFormatter.UtmConversionMode.LATITUDE_BAND_INDICATORS, true));
    usngLabel.setText("USNG: " + CoordinateFormatter.toUsng(location, 4, true));
    // display the callout
    callout.showCalloutAt(location);
  }

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

    // release resources when the application closes
    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);
  }

}