Custom dictionary style

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
/*
 * 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.custom_dictionary_style;

import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Alert;
import javafx.scene.control.Label;
import javafx.scene.control.ProgressIndicator;
import javafx.scene.control.RadioButton;
import javafx.scene.control.ToggleGroup;
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.data.ServiceFeatureTable;
import com.esri.arcgisruntime.geometry.Point;
import com.esri.arcgisruntime.layers.FeatureLayer;
import com.esri.arcgisruntime.loadable.LoadStatus;
import com.esri.arcgisruntime.mapping.ArcGISMap;
import com.esri.arcgisruntime.mapping.BasemapStyle;
import com.esri.arcgisruntime.mapping.Viewpoint;
import com.esri.arcgisruntime.mapping.view.MapView;
import com.esri.arcgisruntime.portal.Portal;
import com.esri.arcgisruntime.portal.PortalItem;
import com.esri.arcgisruntime.symbology.DictionaryRenderer;
import com.esri.arcgisruntime.symbology.DictionarySymbolStyle;
import com.esri.arcgisruntime.symbology.Renderer;

import java.io.File;
import java.util.HashMap;

public class CustomDictionaryStyleSample extends Application {

  private MapView mapView;
  private DictionarySymbolStyle dictSymbStyleFromPortal; // keep loadables in scope to avoid garbage collection
  private DictionaryRenderer webStyleDictionaryRenderer;

  private VBox controlsVBox;
  private ToggleGroup toggleGroup;
  private RadioButton webStyleButton;
  private RadioButton fileStyleButton;
  private ProgressIndicator progressIndicator;

  @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("/custom_dictionary_style/style.css").toExternalForm());

      // set title, size, and add scene to stage
      stage.setTitle("Custom Dictionary Style 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 topographic basemap style
      ArcGISMap map = new ArcGISMap(BasemapStyle.ARCGIS_TOPOGRAPHIC);

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

      // set the initial viewpoint to the Esri Redlands campus
      map.setInitialViewpoint(
        new Viewpoint(new Point(-13046305, 4036698.1412000, map.getSpatialReference()), 5000));

      // set up the UI
      setupUI();

      // enable UI interactions once the map has loaded
      map.addDoneLoadingListener(() -> {
        if (map.getLoadStatus() == LoadStatus.LOADED) {
          controlsVBox.setDisable(false);
        } else {
          new Alert(Alert.AlertType.ERROR, "Map failed to load").show();
        }
      });

      // create a stylex file from a local location
      File stylxFile = new File(System.getProperty("data.dir"), "./samples-data/stylx/Restaurant.stylx");
      // create a dictionary symbol style from the stylx file, and create a new dictionary renderer from it
      DictionarySymbolStyle dictSymbStyleFromFile = DictionarySymbolStyle.createFromFile(stylxFile.getAbsolutePath());
      DictionaryRenderer dictRendFromFile = new DictionaryRenderer(dictSymbStyleFromFile);
      // set the renderer from the style file to the UI
      fileStyleButton.setUserData(dictRendFromFile);

      // create a portal item using the portal and the item id of the dictionary web style
      Portal portal = new Portal("https://arcgisruntime.maps.arcgis.com");
      PortalItem portalItem = new PortalItem(portal, "adee951477014ec68d7cf0ea0579c800");

      // map the input fields in the feature layer to the dictionary symbol style's expected fields for symbols and text
      HashMap<String, String> fieldMap = new HashMap<>();
      fieldMap.put("healthgrade", "Inspection");

      // create a new dictionary symbol style from the web style in the portal item
      dictSymbStyleFromPortal = new DictionarySymbolStyle(portalItem);
      // load the symbol dictionary
      dictSymbStyleFromPortal.loadAsync();

      dictSymbStyleFromPortal.addDoneLoadingListener(() -> {
        if (dictSymbStyleFromPortal.getLoadStatus() == LoadStatus.LOADED) {
          // enable the UI
          controlsVBox.setDisable(false);
          // create a dictionary renderer with the dictionary symbol style,
          // and manually map the feature layer's attribute name to those expected by the dictionary symbol style
          webStyleDictionaryRenderer = new DictionaryRenderer(dictSymbStyleFromPortal, fieldMap, fieldMap);
          // set the renderer from web style to the UI
          webStyleButton.setUserData(webStyleDictionaryRenderer);
          progressIndicator.setVisible(false);
        } else {
          new Alert(Alert.AlertType.ERROR, "Dictionary symbol style failed to load!").show();
        }
      });

      // create a service feature table and create a feature layer from it (restaurant data)
      var serviceFeatureTable =
        new ServiceFeatureTable("https://services2.arcgis.com/ZQgQTuoyBrtmoGdP/ArcGIS/rest/services/Redlands_Restaurants/FeatureServer/0");
      FeatureLayer restaurantLayer = new FeatureLayer(serviceFeatureTable);
      map.getOperationalLayers().add(restaurantLayer);

      // add a listener to the radio button toggle group to change the dictionary renderer
      toggleGroup.selectedToggleProperty().addListener((observable -> {
          if (toggleGroup.getSelectedToggle() != null) {
            // set the chosen dictionary renderer to the feature layer
            restaurantLayer.setRenderer((Renderer) toggleGroup.getSelectedToggle().getUserData());
          }
        })
      );

      // show the style file symbols by default
      toggleGroup.selectToggle(fileStyleButton);

      // add the control panel, map view, and progress indicator to the stack pane
      stackPane.getChildren().addAll(mapView, controlsVBox, progressIndicator);
      StackPane.setAlignment(controlsVBox, Pos.TOP_LEFT);
      StackPane.setAlignment(progressIndicator, Pos.CENTER);
      StackPane.setMargin(controlsVBox, new Insets(10, 0, 0, 10));
    } catch (Exception e) {
      e.printStackTrace();
    }
  }

  /**
   * Sets up control panel with radio buttons to toggle between the dictionary symbol styles.
   */
  public void setupUI() {
    // create a label
    Label symbolStyleLabel = new Label("Choose a Dictionary Symbol Style:");

    // create radio buttons for toggling between the web and file styles
    webStyleButton = new RadioButton("Web style");
    fileStyleButton = new RadioButton("Local style file");

    // set the radio buttons to a toggle group
    toggleGroup = new ToggleGroup();
    toggleGroup.getToggles().addAll(webStyleButton, fileStyleButton);

    // show progress indicator when the dictionary symbol styles are loading
    progressIndicator = new ProgressIndicator();
    progressIndicator.setMaxWidth(30);
    progressIndicator.setVisible(true);

    // create a control panel
    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, 80);
    controlsVBox.getStyleClass().add("panel-region");
    controlsVBox.setDisable(true);
    // add the label and radio buttons to the control panel
    controlsVBox.getChildren().addAll(symbolStyleLabel, webStyleButton, fileStyleButton);
  }

  /**
   * 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);
  }
}