Symbol Dictionary—ArcGIS Runtime SDK for Java

Demonstrates how to search for symbol primitives within a Symbol Dictionary using the mil2525d specification and display those symbols.

How it works

How to search through a SymbolDictionary:

Create a symbol dictionary with the mil2525d specification, SymbolDictionary("mil2525d")
Load the dictionary asynchronously, DictionarySymbol.loadAsync()
- this will allows the application to continue working while the dictionary loads all symbol primitives found within the mil2525d specification
Create search parameters for the dictionary, StyleSymbolSearchParameters().
Set the parameters to search through the dictionary.
- Name, StyleSymbolSearchParameters.getNames().add()
- Tag, StyleSymbolSearchParameters.getTags().add()
- Symbol Class, StyleSymbolSearchParameters.getSymbolClasses().add()
- Category, StyleSymbolSearchParameters.getCategories().add()
- Key, StyleSymbolSearchParameters.getKeys().add()
Search through dictionary using parameters,DictionarySymbol.searchSymbolsAsync(StyleSymbolSearchParameters).
Cycle through the StyleSymbolSearchResult list that was returned and display it to screen.
- get CimSymbol,StyleSymbolSearchResult.getSymbol(), and create an image from it, CimSymbol.createSwatchAsync()
- use other get methods for the symbol's name, tags, symbolClass, category, and key, like StyleSymbolSearchResult.getName()

Code

/*
 * 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.symbology.symbol_dictionary;

import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;

public class SymbolDictionarySample extends Application {

  @Override
  public void start(Stage stage) throws Exception {
    Parent root = FXMLLoader.load(getClass().getResource("/fxml/symbol_dictionary.fxml"));
    Scene scene = new Scene(root);

    // set title, size, and add scene to stage
    stage.setTitle("Symbol Dictionary Sample");
    stage.setWidth(800);
    stage.setHeight(700);
    stage.setScene(scene);
    stage.show();
  }

  /**
   * Opens and runs application.
   *
   * @param args arguments passed to this application
   */
  public static void main(String[] args) {

    Application.launch(args);
  }

}

/*
 * 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.symbology.symbol_dictionary;

import java.util.List;
import java.util.concurrent.ExecutionException;
import java.util.stream.Collectors;

import javafx.collections.FXCollections;
import javafx.collections.ListChangeListener;
import javafx.collections.ObservableList;
import javafx.fxml.FXML;
import javafx.scene.control.ListView;
import javafx.scene.control.Pagination;
import javafx.scene.control.TextField;
import javafx.scene.text.Text;

import com.esri.arcgisruntime.concurrent.ListenableFuture;
import com.esri.arcgisruntime.symbology.DictionarySymbolStyle;
import com.esri.arcgisruntime.symbology.SymbolStyleSearchParameters;
import com.esri.arcgisruntime.symbology.SymbolStyleSearchResult;

public class SymbolDictionaryController {

  @FXML private TextField nameField;
  @FXML private TextField tagField;
  @FXML private TextField symbolClassField;
  @FXML private TextField categoryField;
  @FXML private TextField keyField;
  @FXML private Text searchResultsFound;
  @FXML private Pagination resultPages;

  private ObservableList<SymbolStyleSearchResult> results;
  private DictionarySymbolStyle dictionarySymbol;
  private static final int MAX_RESULTS_PER_PAGE = 20;

  public void initialize() {
    // loads a specification for the symbol dictionary
    dictionarySymbol = new DictionarySymbolStyle("mil2525d");
    dictionarySymbol.loadAsync();

    // initialize result list
    results = FXCollections.observableArrayList();

    // add listener to update pagination control when results change
    results.addListener((ListChangeListener<SymbolStyleSearchResult>) e -> {
      int resultSize = results.size();
      resultPages.setPageCount(resultSize / MAX_RESULTS_PER_PAGE + 1);
      resultPages.setCurrentPageIndex(0);
      resultPages.setPageFactory(pageIndex -> {
        ListView<SymbolView> resultsList = new ListView<>();
        int start = pageIndex * MAX_RESULTS_PER_PAGE;
        List<SymbolView> resultViews = results.subList(start, Math.min(start + MAX_RESULTS_PER_PAGE, results.size()))
          .stream()
          .map(SymbolView::new)
          .collect(Collectors.toList());
        resultsList.getItems().addAll(resultViews);
        return resultsList;
      });
    });
  }

  /**
   * Searches through the symbol dictionary using the text from the search fields.
   */
  @FXML
  private void handleSearchAction() {
    // get parameters from input fields
    SymbolStyleSearchParameters searchParameters = new SymbolStyleSearchParameters();
    searchParameters.getNames().add(nameField.getText());
    searchParameters.getTags().add(tagField.getText());
    searchParameters.getSymbolClasses().add(symbolClassField.getText());
    searchParameters.getCategories().add(categoryField.getText());
    searchParameters.getKeys().add(keyField.getText());

    // search for any matching symbols
    ListenableFuture<List<SymbolStyleSearchResult>> search = dictionarySymbol.searchSymbolsAsync(searchParameters);
    search.addDoneListener(() -> {
      try {
        // update the result list (triggering the listener)
        List<SymbolStyleSearchResult> searchResults = search.get();
        searchResultsFound.setText(String.valueOf(searchResults.size()));
        results.clear();
        results.addAll(searchResults);
      } catch (ExecutionException | InterruptedException e) {
        e.printStackTrace();
      }
    });
  }

  /**
   * Clears search results and any text in the search fields.
   */
  @FXML
  private void handleClearAction() {
    nameField.clear();
    tagField.clear();
    symbolClassField.clear();
    categoryField.clear();
    keyField.clear();
    results.clear();
    searchResultsFound.setText("");
  }
}

/*
 * 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.symbology.symbol_dictionary;

import java.io.IOException;
import java.net.URL;
import java.util.ResourceBundle;
import java.util.concurrent.ExecutionException;

import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.fxml.Initializable;
import javafx.scene.control.Label;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.HBox;

import com.esri.arcgisruntime.concurrent.ListenableFuture;
import com.esri.arcgisruntime.geometry.Point;
import com.esri.arcgisruntime.symbology.Symbol;
import com.esri.arcgisruntime.symbology.SymbolStyleSearchResult;

class SymbolView extends HBox implements Initializable {

  @FXML private ImageView imageView;
  @FXML private Label name;
  @FXML private Label tags;
  @FXML private Label symbolClass;
  @FXML private Label category;
  @FXML private Label key;

  private final SymbolStyleSearchResult styleSymbolSearchResult;

  /**
   * Creates a view of a symbol with a picture and description.
   *
   * @param symbolResult symbol result from a symbol dictionary search
   */
  SymbolView(SymbolStyleSearchResult symbolResult) {
    styleSymbolSearchResult = symbolResult;

    // Set the view of this component to the fxml file
    FXMLLoader loader = new FXMLLoader(getClass().getResource("/fxml/symbol_dictionary_view.fxml"));
    loader.setRoot(this);
    loader.setController(this);

    try {
      loader.load();
    } catch (IOException e) {
      e.printStackTrace();
    }
  }

  @Override
  public void initialize(URL location, ResourceBundle resources) {
    // initialize the component values
    name.setText(styleSymbolSearchResult.getName());
    tags.setText(styleSymbolSearchResult.getTags().toString());
    symbolClass.setText(styleSymbolSearchResult.getSymbolClass());
    category.setText(styleSymbolSearchResult.getCategory());
    key.setText(styleSymbolSearchResult.getKey());

    // set image for non-text symbols
    if (!category.getText().startsWith("Text")) {
      Symbol symbol = styleSymbolSearchResult.getSymbol();
      ListenableFuture<Image> imageResult = symbol.createSwatchAsync(40, 40, 0x00FFFFFF, new Point(0, 0, 0));
      imageResult.addDoneListener(() -> {
        try {
          imageView.setImage(imageResult.get());
        } catch (ExecutionException | InterruptedException e) {
          e.printStackTrace();
        }
      });
    }
  }
}

<?xml version="1.0" encoding="UTF-8"?>
<!--
  ~ 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.
  -->

<?import javafx.geometry.Insets?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.control.Pagination?>
<?import javafx.scene.control.TextField?>
<?import javafx.scene.layout.*?>
<?import javafx.scene.text.Text?>
<BorderPane fx:controller="com.esri.samples.symbology.symbol_dictionary.SymbolDictionaryController"
            xmlns:fx="http://javafx.com/fxml" stylesheets="/css/style.css">
    <padding>
        <Insets bottom="10"/>
    </padding>
    <!-- Top Pane for Search Result -->
    <top>
        <GridPane hgap="10" vgap="10"  prefHeight="200">
            <padding><Insets top="25" bottom="25" left="25"/></padding>
            <Label text="Name: " GridPane.columnIndex="0" GridPane.rowIndex="0"/>
            <!-- Search Result Fields -->
            <TextField fx:id="nameField" GridPane.columnIndex="1" GridPane.rowIndex="0"/>
            <Label text="Tag: " GridPane.columnIndex="0" GridPane.rowIndex="1"/>
            <TextField fx:id="tagField" GridPane.columnIndex="1" GridPane.rowIndex="1"/>
            <Label text="Symbol Class: " GridPane.columnIndex="0" GridPane.rowIndex="2"/>
            <TextField fx:id="symbolClassField" GridPane.columnIndex="1" GridPane.rowIndex="2"/>
            <Label text="Category: " GridPane.columnIndex="0" GridPane.rowIndex="3"/>
            <TextField fx:id="categoryField" GridPane.columnIndex="1" GridPane.rowIndex="3"/>
            <Label text="Key: " GridPane.columnIndex="0" GridPane.rowIndex="4"/>
            <TextField fx:id="keyField" GridPane.columnIndex="1" GridPane.rowIndex="4"/>
            <!--  Button Actions-->
            <Button text="Search for Symbols" onAction="#handleSearchAction"
                    GridPane.columnIndex="2" GridPane.rowIndex="5"/>
            <HBox alignment="center_right"  GridPane.columnIndex="1" GridPane.rowIndex="5">
                <Button text="Clear" onAction="#handleClearAction" alignment="bottom_right"/>
            </HBox>
            <!--  Displaying Results-->
            <Label text="Result(s) Found: " GridPane.columnIndex="0" GridPane.rowIndex="6"/>
            <Text fx:id="searchResultsFound" GridPane.columnIndex="1" GridPane.rowIndex="6"/>
        </GridPane>
    </top>
    <center>
        <Pagination fx:id="resultPages" pageCount="1"/>
    </center>
</BorderPane>

<?xml version="1.0" encoding="UTF-8"?>
<!--
  ~ 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.
  -->

<?import javafx.scene.image.ImageView?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.layout.GridPane?>
<fx:root type="javafx.scene.layout.HBox" xmlns:fx="http://javafx.com/fxml" spacing="10">
    <ImageView fx:id="imageView" fitWidth="40"/>
    <GridPane hgap="10" vgap="3">
        <Label text="Name:" GridPane.rowIndex="0" GridPane.columnIndex="0"/>
        <Label fx:id="name" GridPane.rowIndex="0" GridPane.columnIndex="1"/>
        <Label text="Tags:" GridPane.rowIndex="1" GridPane.columnIndex="0"/>
        <Label fx:id="tags" GridPane.rowIndex="1" GridPane.columnIndex="1"/>
        <Label text="Symbol Class:" GridPane.rowIndex="2" GridPane.columnIndex="0"/>
        <Label fx:id="symbolClass" GridPane.rowIndex="2" GridPane.columnIndex="1"/>
        <Label text="Category:" GridPane.rowIndex="3" GridPane.columnIndex="0"/>
        <Label fx:id="category" GridPane.rowIndex="3" GridPane.columnIndex="1"/>
        <Label text="Key:" GridPane.rowIndex="4" GridPane.columnIndex="0"/>
        <Label fx:id="key" GridPane.rowIndex="4" GridPane.columnIndex="1"/>
    </GridPane>
</fx:root>

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