Initial experiments

src/main/java/com/mycompany/app/App.java

@@ -20,8 +20,16 @@
 import com.esri.arcgisruntime.mapping.BasemapStyle;
 import com.esri.arcgisruntime.mapping.ArcGISMap;
 import com.esri.arcgisruntime.mapping.view.MapView;
+import com.sun.net.httpserver.HttpContext;
+import com.sun.net.httpserver.HttpExchange;
+import com.sun.net.httpserver.HttpHandler;
+import com.sun.net.httpserver.HttpServer;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.net.InetSocketAddress;
 import javafx.application.Application;
 import javafx.scene.Scene;
+import javafx.scene.control.Button;
 import javafx.scene.layout.StackPane;
 import javafx.stage.Stage;
 
@@ -48,22 +56,21 @@ public void start(Stage stage) {
         Scene scene = new Scene(stackPane);
         stage.setScene(scene);
 
-        // Note: it is not best practice to store API keys in source code.
-        // An API key is required to enable access to services, web maps, and web scenes hosted in ArcGIS Online.
-        // If you haven't already, go to your developer dashboard to get your API key.
-        // Please refer to https://developers.arcgis.com/java/get-started/ for more information
-        String yourApiKey = "YOUR_API_KEY";
-        ArcGISRuntimeEnvironment.setApiKey(yourApiKey);
+        Button button = new Button("Login");
+        button.setOnAction(event -> {
 
-        // create a MapView to display the map and add it to the stack pane
-        mapView = new MapView();
-        stackPane.getChildren().add(mapView);
 
-        // create an ArcGISMap with an imagery basemap
-        ArcGISMap map = new ArcGISMap(BasemapStyle.ARCGIS_IMAGERY);
+            System.out.println("pressed login");
 
-        // display the map by setting the map on the map view
-        mapView.setMap(map);
+            String clientID = "55QgK81zBgA3q7Zw";
+            String response_type = "code";
+            String redirect = "http://localhost:1234/auth";
+
+            oAuth oAuth = new oAuth(clientID, redirect, "https://www.arcgis.com", stage, getHostServices());
+            oAuth.authenticate();
+        });
+
+        stackPane.getChildren().add(button);
     }
 
     /**

src/main/java/com/mycompany/app/oAuth.java

@@ -0,0 +1,70 @@
+package com.mycompany.app;
+
+import com.sun.net.httpserver.HttpContext;
+import com.sun.net.httpserver.HttpExchange;
+import com.sun.net.httpserver.HttpServer;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.net.InetSocketAddress;
+import javafx.application.HostServices;
+import javafx.stage.Stage;
+
+public class oAuth {
+  private String clientID;
+  private String redirectURI;
+  private String baseUrl;
+  private HostServices hostServices;
+  private HttpServer httpServer;
+
+  private Stage stage;
+
+  public oAuth (String clientID, String redirectURI, String url, Stage stage, HostServices hostServices) {
+    this.clientID = clientID;
+    this.redirectURI = redirectURI;
+    this.baseUrl = url;
+    this.stage = stage;
+    this.hostServices = hostServices;
+  }
+
+  public void authenticate() {
+
+    // set up a http server to listen to redirect
+    try {
+      httpServer = HttpServer.create(new InetSocketAddress("localhost", 1234), 0);
+      HttpContext context = httpServer.createContext("/auth");
+      context.setHandler(exchange -> handleRequest(exchange));
+      httpServer.start();
+
+      // open up default browser with login page
+      String loginURL = baseUrl + "/sharing/oauth2/authorize?client_id=" +
+      clientID + "&response_type=code&redirect_uri=" + redirectURI;
+
+      hostServices.showDocument(loginURL);
+
+    } catch (IOException e) {
+      throw new RuntimeException(e);
+    }
+  }
+
+  private void handleRequest(HttpExchange exchange) throws IOException {
+
+    // crude capture of the auth code needed to get the token
+    System.out.println("message : " + exchange.getRequestURI().toString());
+
+    // output something in the web browser to say go back to your app
+    String response = "Please return to your app";
+    exchange.sendResponseHeaders(200, response.getBytes().length);//response code and length
+    OutputStream os = exchange.getResponseBody();
+    os.write(response.getBytes());
+    os.close();
+
+    // stop the server
+    this.httpServer.stop(0);
+
+    // attempt to return focus to the JavaFX app, but this doesn't work
+    this.stage.requestFocus();
+  }
+
+
+
+}

src/main/java/module-info.java

@@ -19,6 +19,7 @@
   requires com.esri.arcgisruntime;
   requires javafx.graphics;
   requires org.slf4j.nop;
+  requires jdk.httpserver;
 
   exports com.mycompany.app;
 }