add tor status indicator to status bar

src/main/java/com/sparrowwallet/sparrow/AppController.java

@@ -1602,6 +1602,29 @@ public class AppController implements Initializable {
         tabLabel.getGraphic().getStyleClass().remove("failure");
     }
 
+    private void setTorIcon() {
+        TorStatusLabel torStatusLabel = null;
+        for(Node node : statusBar.getRightItems()) {
+            if(node instanceof TorStatusLabel) {
+                torStatusLabel = (TorStatusLabel)node;
+            }
+        }
+
+        if(!AppServices.isUsingProxy()) {
+            if(torStatusLabel != null) {
+                torStatusLabel.update();
+                statusBar.getRightItems().removeAll(torStatusLabel);
+            }
+        } else {
+            if(torStatusLabel == null) {
+                torStatusLabel = new TorStatusLabel();
+                statusBar.getRightItems().add(Math.max(statusBar.getRightItems().size() - 2, 0), torStatusLabel);
+            } else {
+                torStatusLabel.update();
+            }
+        }
+    }
+
     @Subscribe
     public void themeChanged(ThemeChangedEvent event) {
         String darkCss = getClass().getResource("darktheme.css").toExternalForm();
@@ -1859,6 +1882,7 @@ public class AppController implements Initializable {
         String status = CONNECTION_FAILED_PREFIX + event.getMessage();
         statusUpdated(new StatusEvent(status));
         serverToggleStopAnimation();
+        setTorIcon();
     }
 
     @Subscribe
@@ -1867,6 +1891,7 @@ public class AppController implements Initializable {
         statusUpdated(new StatusEvent(status));
         setServerToggleTooltip(event.getBlockHeight());
         serverToggleStopAnimation();
+        setTorIcon();
     }
 
     @Subscribe
@@ -1993,18 +2018,21 @@ public class AppController implements Initializable {
     public void torBootStatus(TorBootStatusEvent event) {
         serverToggle.setDisable(true);
         statusUpdated(new StatusEvent(event.getStatus(), 120));
+        setTorIcon();
     }
 
     @Subscribe
     public void torFailedStatus(TorFailedStatusEvent event) {
         serverToggle.setDisable(false);
         statusUpdated(new StatusEvent(event.getStatus()));
+        setTorIcon();
     }
 
     @Subscribe
     public void torReadyStatus(TorReadyStatusEvent event) {
         serverToggle.setDisable(false);
         statusUpdated(new StatusEvent(event.getStatus()));
+        setTorIcon();
     }
 
     @Subscribe

src/main/java/com/sparrowwallet/sparrow/AppServices.java

@@ -119,6 +119,11 @@ public class AppServices {
         public void changed(ObservableValue<? extends Boolean> observable, Boolean oldValue, Boolean online) {
             if(online) {
                 if(Config.get().requiresInternalTor() && !isTorRunning()) {
+                    if(torService.getState() == Worker.State.SCHEDULED) {
+                        torService.cancel();
+                        torService.reset();
+                    }
+
                     torService.start();
                 } else {
                     restartServices();

src/main/java/com/sparrowwallet/sparrow/control/TorStatusLabel.java

@@ -0,0 +1,88 @@
+package com.sparrowwallet.sparrow.control;
+
+import com.google.common.net.HostAndPort;
+import com.sparrowwallet.sparrow.AppServices;
+import com.sparrowwallet.sparrow.glyphfont.FontAwesome5;
+import com.sparrowwallet.sparrow.io.Config;
+import javafx.concurrent.ScheduledService;
+import javafx.concurrent.Task;
+import javafx.geometry.Insets;
+import javafx.scene.Group;
+import javafx.scene.Node;
+import javafx.scene.control.Label;
+import javafx.scene.control.Tooltip;
+import javafx.util.Duration;
+import org.controlsfx.glyphfont.Glyph;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.IOException;
+import java.net.Socket;
+
+public class TorStatusLabel extends Label {
+    private static final Logger log = LoggerFactory.getLogger(TorStatusLabel.class);
+
+    private final TorConnectionTest torConnectionTest = new TorConnectionTest();
+
+    public TorStatusLabel() {
+        getStyleClass().add("tor-status");
+        setPadding(new Insets(1, 0, 0, 3));
+        setGraphic(getIcon());
+        update();
+    }
+
+    public void update() {
+        boolean proxyInUse = AppServices.isUsingProxy();
+        boolean internal = AppServices.isTorRunning();
+
+        if(!proxyInUse || internal) {
+            torConnectionTest.cancel();
+            if(internal) {
+                setTooltip(new Tooltip("Internal Tor proxy enabled"));
+            }
+        } else if(!torConnectionTest.isRunning()) {
+            torConnectionTest.setPeriod(Duration.seconds(20.0));
+            torConnectionTest.setOnSucceeded(workerStateEvent -> {
+                getStyleClass().remove("failure");
+                setTooltip(new Tooltip("External Tor proxy enabled"));
+            });
+            torConnectionTest.setOnFailed(workerStateEvent -> {
+                if(!getStyleClass().contains("failure")) {
+                    getStyleClass().add("failure");
+                }
+                setTooltip(new Tooltip("External Tor proxy error: " + workerStateEvent.getSource().getException().getMessage()));
+                log.warn("Failed to connect to external Tor proxy: " + workerStateEvent.getSource().getException().getMessage());
+            });
+            torConnectionTest.start();
+        }
+    }
+
+    private Node getIcon() {
+        Glyph adjust = new Glyph(FontAwesome5.FONT_NAME, FontAwesome5.Glyph.ADJUST);
+        adjust.setFontSize(15);
+        adjust.setRotate(180);
+
+        Glyph bullseye = new Glyph(FontAwesome5.FONT_NAME, FontAwesome5.Glyph.BULLSEYE);
+        bullseye.setFontSize(14);
+
+        Group group = new Group();
+        group.getChildren().addAll(adjust, bullseye);
+
+        return group;
+    }
+
+    private static class TorConnectionTest extends ScheduledService<Void> {
+        @Override
+        protected Task<Void> createTask() {
+            return new Task<>() {
+                protected Void call() throws IOException {
+                    HostAndPort proxyHostAndPort = HostAndPort.fromString(Config.get().getProxyServer());
+                    Socket socket = new Socket(proxyHostAndPort.getHost(), proxyHostAndPort.getPort());
+                    socket.close();
+
+                    return null;
+                }
+            };
+        }
+    }
+}

src/main/java/com/sparrowwallet/sparrow/glyphfont/FontAwesome5.java

@@ -15,6 +15,7 @@ public class FontAwesome5 extends GlyphFont {
      * The individual glyphs offered by the FontAwesome5 font.
      */
     public static enum Glyph implements INamedCharacter {
+        ADJUST('\uf042'),
         ARROW_CIRCLE_DOWN('\uf0ab'),
         ANGLE_DOUBLE_RIGHT('\uf101'),
         ARROW_DOWN('\uf063'),
@@ -22,6 +23,7 @@ public class FontAwesome5 extends GlyphFont {
         BAN('\uf05e'),
         BIOHAZARD('\uf780'),
         BTC('\uf15a'),
+        BULLSEYE('\uf140'),
         CAMERA('\uf030'),
         CHECK_CIRCLE('\uf058'),
         CIRCLE('\uf111'),

src/main/resources/com/sparrowwallet/sparrow/app.css

@@ -24,6 +24,10 @@
     -fx-text-fill: rgb(202, 18, 67);
 }
 
+.tor-status.failure .glyph-font {
+    -fx-text-fill: rgb(202, 18, 67);
+}
+
 .master-only {
     -fx-tab-max-height: 0;
 }

src/main/resources/com/sparrowwallet/sparrow/darktheme.css

@@ -87,6 +87,10 @@
     -fx-fill: #e06c75;
 }
 
+.status-bar .tor-status.failure .glyph-font {
+    -fx-text-fill: #e06c75;
+}
+
 .root .titled-description-pane .status-error .text, .root .titled-description-pane .description-error .text {
     -fx-fill: #e06c75;
 }