Feature collection layer

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/*
 * Copyright 2016 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.feature_collection_layer;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;

import com.esri.arcgisruntime.ArcGISRuntimeEnvironment;
import com.esri.arcgisruntime.data.Feature;
import com.esri.arcgisruntime.data.FeatureCollection;
import com.esri.arcgisruntime.data.FeatureCollectionTable;
import com.esri.arcgisruntime.data.Field;
import com.esri.arcgisruntime.geometry.GeometryType;
import com.esri.arcgisruntime.geometry.Point;
import com.esri.arcgisruntime.geometry.PolygonBuilder;
import com.esri.arcgisruntime.geometry.PolylineBuilder;
import com.esri.arcgisruntime.geometry.SpatialReference;
import com.esri.arcgisruntime.geometry.SpatialReferences;
import com.esri.arcgisruntime.layers.FeatureCollectionLayer;
import com.esri.arcgisruntime.mapping.ArcGISMap;
import com.esri.arcgisruntime.mapping.BasemapStyle;
import com.esri.arcgisruntime.mapping.view.MapView;
import com.esri.arcgisruntime.symbology.SimpleFillSymbol;
import com.esri.arcgisruntime.symbology.SimpleLineSymbol;
import com.esri.arcgisruntime.symbology.SimpleMarkerSymbol;
import com.esri.arcgisruntime.symbology.SimpleMarkerSymbol.Style;
import com.esri.arcgisruntime.symbology.SimpleRenderer;

public class FeatureCollectionLayerSample extends Application {

  private MapView mapView;

  private static final SpatialReference WGS84 = SpatialReferences.getWgs84();

  @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("Feature Collection Layer 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 map with the oceans basemap style
      ArcGISMap map = new ArcGISMap(BasemapStyle.ARCGIS_OCEANS);

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

      // set initial location for view
      mapView.setViewpointCenterAsync(new Point(-79.497238, 8.849289, WGS84), 1000000);

      // create feature collection and add to the map as a layer
      FeatureCollection featureCollection = new FeatureCollection();
      FeatureCollectionLayer featureCollectionLayer = new FeatureCollectionLayer(featureCollection);
      map.getOperationalLayers().add(featureCollectionLayer);

      // add point, line, and polygon geometry to feature collection
      createPointTable(featureCollection);
      createPolylineTable(featureCollection);
      createPolygonTables(featureCollection);

      // add the map view to stack pane
      stackPane.getChildren().addAll(mapView);
    } catch (Exception e) {
      // on any error, display the stack trace.
      e.printStackTrace();
    }
  }

  /**
   * Creates a Point Feature Collection Table with one Point and adds it to the Feature collection that was passed.
   *
   * @param featureCollection that the point Feature Collection Table will be added to
   */
  private void createPointTable(FeatureCollection featureCollection) {

    // defines the schema for the geometry's attribute
    List<Field> pointFields = new ArrayList<>();
    pointFields.add(Field.createString("Place", "Place Name", 50));

    // a feature collection table that creates point geometry
    FeatureCollectionTable pointsTable = new FeatureCollectionTable(pointFields, GeometryType.POINT, WGS84);

    // set a default symbol for features in the collection table
    SimpleMarkerSymbol markerSymbol = new SimpleMarkerSymbol(Style.TRIANGLE, 0xFFFF0000, 18);
    SimpleRenderer renderer = new SimpleRenderer(markerSymbol);
    pointsTable.setRenderer(renderer);

    // add feature collection table to feature collection
    featureCollection.getTables().add(pointsTable);

    // create feature using the collection table by passing an attribute and geometry
    Map<String, Object> attributes = new HashMap<>();
    attributes.put(pointFields.get(0).getName(), "Current Location");
    Point point = new Point(-79.497238, 8.849289, WGS84);
    Feature addedFeature = pointsTable.createFeature(attributes, point);

    // add feature to collection table
    pointsTable.addFeatureAsync(addedFeature);
  }

  /**
   * Creates a PolyLine Feature Collection Table with one PolyLine and adds it to the Feature collection that was passed.
   *
   * @param featureCollection that the polyline Feature Collection Table will be added to
   */
  private void createPolylineTable(FeatureCollection featureCollection) {

    // defines the schema for the geometry's attribute
    List<Field> polylineFields = new ArrayList<>();
    polylineFields.add(Field.createString("Boundary", "Boundary Name", 50));

    // a feature collection table that creates polyline geometry
    FeatureCollectionTable polylineTable = new FeatureCollectionTable(polylineFields, GeometryType.POLYLINE, WGS84);

    // set a default symbol for features in the collection table
    SimpleLineSymbol lineSymbol = new SimpleLineSymbol(SimpleLineSymbol.Style.DASH, 0xFF00FF00, 3);
    SimpleRenderer renderer = new SimpleRenderer(lineSymbol);
    polylineTable.setRenderer(renderer);

    // add feature collection table to feature collection
    featureCollection.getTables().add(polylineTable);

    // create feature using the collection table by passing an attribute and geometry
    Map<String, Object> attributes = new HashMap<>();
    attributes.put(polylineFields.get(0).getName(), "AManAPlanACanalPanama");
    PolylineBuilder builder = new PolylineBuilder(WGS84);
    builder.addPoint(new Point(-79.497238, 8.849289, WGS84));
    builder.addPoint(new Point(-80.035568, 9.432302, WGS84));
    Feature addedFeature = polylineTable.createFeature(attributes, builder.toGeometry());

    // add feature to collection table
    polylineTable.addFeatureAsync(addedFeature);
  }

  /**
   * Creates a Polygon Feature Collection Table with one Polygon and adds it to the Feature collection that was passed.
   *
   * @param featureCollection that the polygon Feature Collection Table will be added to
   */
  private void createPolygonTables(FeatureCollection featureCollection) {

    // defines the schema for the geometry's attribute
    List<Field> polygonFields = new ArrayList<>();
    polygonFields.add(Field.createString("Area", "Area Name", 50));

    // a feature collection table that creates polygon geometry
    FeatureCollectionTable polygonTable = new FeatureCollectionTable(polygonFields, GeometryType.POLYGON, WGS84);

    // set a default symbol for features in the collection table
    SimpleLineSymbol lineSymbol = new SimpleLineSymbol(SimpleLineSymbol.Style.SOLID, 0xFF0000FF, 2);
    SimpleFillSymbol fillSymbol = new SimpleFillSymbol(SimpleFillSymbol.Style.DIAGONAL_CROSS, 0xFF00FFFF, lineSymbol);
    SimpleRenderer renderer = new SimpleRenderer(fillSymbol);
    polygonTable.setRenderer(renderer);

    // add feature collection table to feature collection
    featureCollection.getTables().add(polygonTable);

    // create feature using the collection table by passing an attribute and geometry
    Map<String, Object> attributes = new HashMap<>();
    attributes.put(polygonFields.get(0).getName(), "Restricted area");
    PolygonBuilder builder = new PolygonBuilder(WGS84);
    builder.addPoint(new Point(-79.497238, 8.849289, WGS84));
    builder.addPoint(new Point(-79.337936, 8.638903, WGS84));
    builder.addPoint(new Point(-79.11409, 8.895422, WGS84));
    Feature addedFeature = polygonTable.createFeature(attributes, builder.toGeometry());

    // add feature to collection table
    polygonTable.addFeatureAsync(addedFeature);
  }

  /**
   * 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);
  }
}