display address on device, device support improvements

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

@@ -113,6 +113,8 @@ public class AppController implements Initializable {
 
     private ElectrumServer.ConnectionService connectionService;
 
+    private Hwi.ScheduledEnumerateService deviceEnumerateService;
+
     private static Integer currentBlockHeight;
 
     public static boolean showTxHexProperty;
@@ -291,6 +293,25 @@ public class AppController implements Initializable {
         return ratesService;
     }
 
+    private Hwi.ScheduledEnumerateService createDeviceEnumerateService() {
+        Hwi.ScheduledEnumerateService enumerateService = new Hwi.ScheduledEnumerateService(null);
+        enumerateService.setPeriod(new Duration(ENUMERATE_HW_PERIOD));
+        enumerateService.setOnSucceeded(workerStateEvent -> {
+            List<Device> devices = enumerateService.getValue();
+
+            //Null devices are returned if the app is currently prompting for a pin. Otherwise, the enumerate clears the pin screen
+            if(devices != null) {
+                //If another instance of HWI is currently accessing the usb interface, HWI returns empty device models. Ignore this run if that happens
+                List<Device> validDevices = devices.stream().filter(device -> device.getModel() != null).collect(Collectors.toList());
+                if(validDevices.size() == devices.size()) {
+                    Platform.runLater(() -> EventManager.get().post(new UsbDeviceEvent(devices)));
+                }
+            }
+        });
+
+        return enumerateService;
+    }
+
     public void setApplication(MainApp application) {
         this.application = application;
     }
@@ -509,7 +530,7 @@ public class AppController implements Initializable {
     }
 
     public static List<Device> getDevices() {
-        return devices;
+        return devices == null ? new ArrayList<>() : devices;
     }
 
     public Map<Wallet, Storage> getOpenWallets() {
@@ -739,24 +760,6 @@ public class AppController implements Initializable {
             EventManager.get().register(walletForm);
             controller.setWalletForm(walletForm);
 
-            if(!storage.getWalletFile().exists() || wallet.containsSource(KeystoreSource.HW_USB)) {
-                Hwi.ScheduledEnumerateService enumerateService = new Hwi.ScheduledEnumerateService(null);
-                enumerateService.setPeriod(new Duration(ENUMERATE_HW_PERIOD));
-                enumerateService.setOnSucceeded(workerStateEvent -> {
-                    List<Device> devices = enumerateService.getValue();
-
-                    //Null devices are returned if the app is currently prompting for a pin. Otherwise, the enumerate clears the pin screen
-                    if(devices != null) {
-                        //If another instance of HWI is currently accessing the usb interface, HWI returns empty device models. Ignore this run if that happens
-                        List<Device> validDevices = devices.stream().filter(device -> device.getModel() != null).collect(Collectors.toList());
-                        if(validDevices.size() == devices.size()) {
-                            EventManager.get().post(new UsbDeviceEvent(devices));
-                        }
-                    }
-                });
-                enumerateService.start();
-            }
-
             tabs.getTabs().add(tab);
             return tab;
         } catch(IOException e) {
@@ -1080,6 +1083,36 @@ public class AppController implements Initializable {
         fiatCurrencyExchangeRate = event.getCurrencyRate();
     }
 
+    @Subscribe
+    public void openWallets(OpenWalletsEvent event) {
+        boolean usbWallet = false;
+        for(Map.Entry<Wallet, Storage> entry : event.getWalletsMap().entrySet()) {
+            Wallet wallet = entry.getKey();
+            Storage storage = entry.getValue();
+
+            if(!storage.getWalletFile().exists() || wallet.containsSource(KeystoreSource.HW_USB)) {
+                usbWallet = true;
+
+                if(deviceEnumerateService == null) {
+                    deviceEnumerateService = createDeviceEnumerateService();
+                }
+
+                if(deviceEnumerateService.getState() == Worker.State.CANCELLED) {
+                    deviceEnumerateService.reset();
+                }
+
+                if(!deviceEnumerateService.isRunning()) {
+                    deviceEnumerateService.start();
+                }
+            }
+        }
+
+        if(!usbWallet && deviceEnumerateService != null && deviceEnumerateService.isRunning()) {
+            deviceEnumerateService.cancel();
+            EventManager.get().post(new UsbDeviceEvent(Collections.emptyList()));
+        }
+    }
+
     @Subscribe
     public void requestOpenWallets(RequestOpenWalletsEvent event) {
         EventManager.get().post(new OpenWalletsEvent(getOpenWallets()));

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

@@ -0,0 +1,35 @@
+package com.sparrowwallet.sparrow.control;
+
+import com.google.common.eventbus.Subscribe;
+import com.sparrowwallet.drongo.KeyDerivation;
+import com.sparrowwallet.drongo.wallet.Wallet;
+import com.sparrowwallet.sparrow.EventManager;
+import com.sparrowwallet.sparrow.event.AddressDisplayedEvent;
+import com.sparrowwallet.sparrow.io.Device;
+
+import java.util.List;
+
+public class DeviceAddressDialog extends DeviceDialog<String> {
+    private final Wallet wallet;
+    private final KeyDerivation keyDerivation;
+
+    public DeviceAddressDialog(List<Device> devices, Wallet wallet, KeyDerivation keyDerivation) {
+        super(devices);
+        this.wallet = wallet;
+        this.keyDerivation = keyDerivation;
+
+        EventManager.get().register(this);
+    }
+
+    @Override
+    protected DevicePane getDevicePane(Device device) {
+        return new DevicePane(wallet, keyDerivation, device);
+    }
+
+    @Subscribe
+    public void addressDisplayed(AddressDisplayedEvent event) {
+        EventManager.get().unregister(this);
+        setResult(event.getAddress());
+        this.close();
+    }
+}

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

@@ -0,0 +1,126 @@
+package com.sparrowwallet.sparrow.control;
+
+import com.sparrowwallet.sparrow.AppController;
+import com.sparrowwallet.sparrow.EventManager;
+import com.sparrowwallet.sparrow.event.UsbDeviceEvent;
+import com.sparrowwallet.sparrow.glyphfont.FontAwesome5Brands;
+import com.sparrowwallet.sparrow.io.Device;
+import com.sparrowwallet.sparrow.io.Hwi;
+import javafx.application.Platform;
+import javafx.event.ActionEvent;
+import javafx.geometry.Pos;
+import javafx.scene.control.*;
+import javafx.scene.layout.AnchorPane;
+import javafx.scene.layout.StackPane;
+import javafx.scene.layout.VBox;
+import org.controlsfx.glyphfont.Glyph;
+
+import java.util.List;
+
+public abstract class DeviceDialog<R> extends Dialog<R> {
+    private final List<Device> operationDevices;
+    private final Accordion deviceAccordion;
+    private final VBox scanBox;
+    private final Label scanLabel;
+
+    public DeviceDialog() {
+        this(null);
+    }
+
+    public DeviceDialog(List<Device> operationDevices) {
+        this.operationDevices = operationDevices;
+
+        final DialogPane dialogPane = getDialogPane();
+        dialogPane.getStylesheets().add(AppController.class.getResource("general.css").toExternalForm());
+
+        StackPane stackPane = new StackPane();
+        dialogPane.setContent(stackPane);
+
+        AnchorPane anchorPane = new AnchorPane();
+        ScrollPane scrollPane = new ScrollPane();
+        scrollPane.setPrefHeight(280);
+        scrollPane.setHbarPolicy(ScrollPane.ScrollBarPolicy.NEVER);
+        anchorPane.getChildren().add(scrollPane);
+        scrollPane.setFitToWidth(true);
+        AnchorPane.setLeftAnchor(scrollPane, 0.0);
+        AnchorPane.setRightAnchor(scrollPane, 0.0);
+
+        deviceAccordion = new Accordion();
+        scrollPane.setContent(deviceAccordion);
+
+        scanBox = new VBox();
+        scanBox.setSpacing(30);
+        scanBox.setAlignment(Pos.CENTER);
+        Glyph usb = new Glyph(FontAwesome5Brands.FONT_NAME, FontAwesome5Brands.Glyph.USB);
+        usb.setFontSize(50);
+        scanLabel = new Label("Connect Hardware Wallet");
+        Button button = new Button("Scan...");
+        button.setPrefSize(120, 60);
+        button.setOnAction(event -> {
+            scan();
+        });
+        scanBox.getChildren().addAll(usb, scanLabel, button);
+        scanBox.managedProperty().bind(scanBox.visibleProperty());
+
+        stackPane.getChildren().addAll(anchorPane, scanBox);
+
+        List<Device> devices = AppController.getDevices();
+        if(devices == null || devices.isEmpty()) {
+            scanBox.setVisible(true);
+        } else {
+            Platform.runLater(() -> setDevices(devices));
+            scanBox.setVisible(false);
+        }
+
+        final ButtonType rescanButtonType = new javafx.scene.control.ButtonType("Rescan", ButtonBar.ButtonData.NO);
+        final ButtonType cancelButtonType = new javafx.scene.control.ButtonType("Cancel", ButtonBar.ButtonData.CANCEL_CLOSE);
+        dialogPane.getButtonTypes().addAll(rescanButtonType, cancelButtonType);
+
+        Button rescanButton = (Button) dialogPane.lookupButton(rescanButtonType);
+        rescanButton.managedProperty().bind(rescanButton.visibleProperty());
+        rescanButton.visibleProperty().bind(scanBox.visibleProperty().not());
+        rescanButton.addEventFilter(ActionEvent.ACTION, event -> {
+            scan();
+            event.consume();
+        });
+
+        dialogPane.setPrefWidth(500);
+        dialogPane.setPrefHeight(360);
+    }
+
+    private void scan() {
+        Hwi.EnumerateService enumerateService = new Hwi.EnumerateService(null);
+        enumerateService.setOnSucceeded(workerStateEvent -> {
+            List<Device> devices = enumerateService.getValue();
+            setDevices(devices);
+            Platform.runLater(() -> EventManager.get().post(new UsbDeviceEvent(devices)));
+        });
+        enumerateService.setOnFailed(workerStateEvent -> {
+            scanBox.setVisible(true);
+            scanLabel.setText(workerStateEvent.getSource().getException().getMessage());
+        });
+        enumerateService.start();
+    }
+
+    protected void setDevices(List<Device> devices) {
+        List<Device> dialogDevices = devices;
+        if(operationDevices != null && dialogDevices.containsAll(operationDevices)) {
+            dialogDevices = operationDevices;
+        }
+
+        deviceAccordion.getPanes().clear();
+
+        if(dialogDevices.isEmpty()) {
+            scanBox.setVisible(true);
+            scanLabel.setText("No devices found");
+        } else {
+            scanBox.setVisible(false);
+            for(Device device : dialogDevices) {
+                DevicePane devicePane = getDevicePane(device);
+                deviceAccordion.getPanes().add(devicePane);
+            }
+        }
+    }
+
+    protected abstract DevicePane getDevicePane(Device device);
+}

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

@@ -8,6 +8,7 @@ import com.sparrowwallet.drongo.wallet.Keystore;
 import com.sparrowwallet.drongo.wallet.KeystoreSource;
 import com.sparrowwallet.drongo.wallet.Wallet;
 import com.sparrowwallet.sparrow.EventManager;
+import com.sparrowwallet.sparrow.event.AddressDisplayedEvent;
 import com.sparrowwallet.sparrow.event.KeystoreImportEvent;
 import com.sparrowwallet.sparrow.event.PSBTSignedEvent;
 import com.sparrowwallet.sparrow.io.Device;
@@ -35,6 +36,7 @@ public class DevicePane extends TitledDescriptionPane {
     private final DeviceOperation deviceOperation;
     private final Wallet wallet;
     private final PSBT psbt;
+    private final KeyDerivation keyDerivation;
     private final Device device;
 
     private CustomPasswordField pinField;
@@ -43,14 +45,16 @@ public class DevicePane extends TitledDescriptionPane {
     private Button setPassphraseButton;
     private SplitMenuButton importButton;
     private Button signButton;
+    private Button displayAddressButton;
 
     private final SimpleStringProperty passphrase = new SimpleStringProperty("");
 
-    public DevicePane(DeviceOperation deviceOperation, Wallet wallet, Device device) {
+    public DevicePane(Wallet wallet, Device device) {
         super(device.getModel().toDisplayString(), "", "", "image/" + device.getType() + ".png");
-        this.deviceOperation = deviceOperation;
+        this.deviceOperation = DeviceOperation.IMPORT;
         this.wallet = wallet;
         this.psbt = null;
+        this.keyDerivation = null;
         this.device = device;
 
         setDefaultStatus();
@@ -70,11 +74,12 @@ public class DevicePane extends TitledDescriptionPane {
         buttonBox.getChildren().addAll(setPassphraseButton, importButton);
     }
 
-    public DevicePane(DeviceOperation deviceOperation, PSBT psbt, Device device) {
+    public DevicePane(PSBT psbt, Device device) {
         super(device.getModel().toDisplayString(), "", "", "image/" + device.getType() + ".png");
-        this.deviceOperation = deviceOperation;
+        this.deviceOperation = DeviceOperation.SIGN;
         this.wallet = null;
         this.psbt = psbt;
+        this.keyDerivation = null;
         this.device = device;
 
         setDefaultStatus();
@@ -94,6 +99,31 @@ public class DevicePane extends TitledDescriptionPane {
         buttonBox.getChildren().addAll(setPassphraseButton, signButton);
     }
 
+    public DevicePane(Wallet wallet, KeyDerivation keyDerivation, Device device) {
+        super(device.getModel().toDisplayString(), "", "", "image/" + device.getType() + ".png");
+        this.deviceOperation = DeviceOperation.DISPLAY_ADDRESS;
+        this.wallet = wallet;
+        this.psbt = null;
+        this.keyDerivation = keyDerivation;
+        this.device = device;
+
+        setDefaultStatus();
+        showHideLink.setVisible(false);
+
+        createSetPassphraseButton();
+        createDisplayAddressButton();
+
+        if (device.getNeedsPinSent() != null && device.getNeedsPinSent()) {
+            unlockButton.setVisible(true);
+        } else if(device.getNeedsPassphraseSent() != null && device.getNeedsPassphraseSent()) {
+            setPassphraseButton.setVisible(true);
+        } else {
+            showOperationButton();
+        }
+
+        buttonBox.getChildren().addAll(setPassphraseButton, displayAddressButton);
+    }
+
     @Override
     protected Control createButton() {
         createUnlockButton();
@@ -153,6 +183,7 @@ public class DevicePane extends TitledDescriptionPane {
         signButton = new Button("Sign");
         signButton.setDefaultButton(true);
         signButton.setAlignment(Pos.CENTER_RIGHT);
+        signButton.setMinWidth(44);
         signButton.setOnAction(event -> {
             signButton.setDisable(true);
             sign();
@@ -161,6 +192,22 @@ public class DevicePane extends TitledDescriptionPane {
         signButton.setVisible(false);
     }
 
+    private void createDisplayAddressButton() {
+        displayAddressButton = new Button("Display Address");
+        displayAddressButton.setDefaultButton(true);
+        displayAddressButton.setAlignment(Pos.CENTER_RIGHT);
+        displayAddressButton.setOnAction(event -> {
+            displayAddressButton.setDisable(true);
+            displayAddress();
+        });
+        displayAddressButton.managedProperty().bind(displayAddressButton.visibleProperty());
+        displayAddressButton.setVisible(false);
+
+        if(device.getFingerprint() != null && !device.getFingerprint().equals(keyDerivation.getMasterFingerprint())) {
+            displayAddressButton.setDisable(true);
+        }
+    }
+
     private void unlock(Device device) {
         if(device.getModel().equals(WalletModel.TREZOR_1)) {
             promptPin();
@@ -375,6 +422,20 @@ public class DevicePane extends TitledDescriptionPane {
         signPSBTService.start();
     }
 
+    private void displayAddress() {
+        Hwi.DisplayAddressService displayAddressService = new Hwi.DisplayAddressService(device, passphrase.get(), wallet.getScriptType(), keyDerivation.getDerivationPath());
+        displayAddressService.setOnSucceeded(successEvent -> {
+            String address = displayAddressService.getValue();
+            EventManager.get().post(new AddressDisplayedEvent(address));
+        });
+        displayAddressService.setOnFailed(failedEvent -> {
+            setError(displayAddressService.getException().getMessage(), null);
+            displayAddressButton.setDisable(false);
+        });
+        setDescription("Check device for address");
+        displayAddressService.start();
+    }
+
     private void showOperationButton() {
         if(deviceOperation.equals(DeviceOperation.IMPORT)) {
             importButton.setVisible(true);
@@ -384,6 +445,9 @@ public class DevicePane extends TitledDescriptionPane {
         } else if(deviceOperation.equals(DeviceOperation.SIGN)) {
             signButton.setVisible(true);
             showHideLink.setVisible(false);
+        } else if(deviceOperation.equals(DeviceOperation.DISPLAY_ADDRESS)) {
+            displayAddressButton.setVisible(true);
+            showHideLink.setVisible(false);
         }
     }
 
@@ -424,6 +488,6 @@ public class DevicePane extends TitledDescriptionPane {
     }
 
     public enum DeviceOperation {
-        IMPORT, SIGN;
+        IMPORT, SIGN, DISPLAY_ADDRESS;
     }
 }

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

@@ -2,124 +2,31 @@ package com.sparrowwallet.sparrow.control;
 
 import com.google.common.eventbus.Subscribe;
 import com.sparrowwallet.drongo.psbt.PSBT;
-import com.sparrowwallet.sparrow.AppController;
 import com.sparrowwallet.sparrow.EventManager;
 import com.sparrowwallet.sparrow.event.PSBTSignedEvent;
-import com.sparrowwallet.sparrow.glyphfont.FontAwesome5Brands;
 import com.sparrowwallet.sparrow.io.Device;
-import com.sparrowwallet.sparrow.io.Hwi;
-import javafx.event.ActionEvent;
-import javafx.geometry.Pos;
-import javafx.scene.control.*;
-import javafx.scene.layout.AnchorPane;
-import javafx.scene.layout.StackPane;
-import javafx.scene.layout.VBox;
-import org.controlsfx.glyphfont.Glyph;
 
 import java.util.List;
 
-public class DeviceSignDialog extends Dialog<PSBT> {
+public class DeviceSignDialog extends DeviceDialog<PSBT> {
     private final PSBT psbt;
-    private final Accordion deviceAccordion;
-    private final VBox scanBox;
-    private final Label scanLabel;
 
-    public DeviceSignDialog(PSBT psbt) {
+    public DeviceSignDialog(List<Device> devices, PSBT psbt) {
+        super(devices);
         this.psbt = psbt;
-
         EventManager.get().register(this);
-
+        setResultConverter(dialogButton -> dialogButton.getButtonData().isCancelButton() ? null : psbt);
-        final DialogPane dialogPane = getDialogPane();
-        dialogPane.getStylesheets().add(AppController.class.getResource("general.css").toExternalForm());
-
-        StackPane stackPane = new StackPane();
-        dialogPane.setContent(stackPane);
-
-        AnchorPane anchorPane = new AnchorPane();
-        ScrollPane scrollPane = new ScrollPane();
-        scrollPane.setPrefHeight(280);
-        scrollPane.setHbarPolicy(ScrollPane.ScrollBarPolicy.NEVER);
-        anchorPane.getChildren().add(scrollPane);
-        scrollPane.setFitToWidth(true);
-        AnchorPane.setLeftAnchor(scrollPane, 0.0);
-        AnchorPane.setRightAnchor(scrollPane, 0.0);
-
-        deviceAccordion = new Accordion();
-        scrollPane.setContent(deviceAccordion);
-
-        scanBox = new VBox();
-        scanBox.setSpacing(30);
-        scanBox.setAlignment(Pos.CENTER);
-        Glyph usb = new Glyph(FontAwesome5Brands.FONT_NAME, FontAwesome5Brands.Glyph.USB);
-        usb.setFontSize(50);
-        scanLabel = new Label("Connect Hardware Wallet");
-        Button button = new Button("Scan...");
-        button.setPrefSize(120, 60);
-        button.setOnAction(event -> {
-            scan();
-        });
-        scanBox.getChildren().addAll(usb, scanLabel, button);
-        scanBox.managedProperty().bind(scanBox.visibleProperty());
-
-        stackPane.getChildren().addAll(anchorPane, scanBox);
-
-        List<Device> devices = AppController.getDevices();
-        if(devices == null || devices.isEmpty()) {
-            scanBox.setVisible(true);
-        } else {
-            setDevices(devices);
-            scanBox.setVisible(false);
-        }
-
-        final ButtonType rescanButtonType = new javafx.scene.control.ButtonType("Rescan", ButtonBar.ButtonData.NO);
-        final ButtonType cancelButtonType = new javafx.scene.control.ButtonType("Cancel", ButtonBar.ButtonData.CANCEL_CLOSE);
-        dialogPane.getButtonTypes().addAll(rescanButtonType, cancelButtonType);
-
-        Button rescanButton = (Button) dialogPane.lookupButton(rescanButtonType);
-        rescanButton.managedProperty().bind(rescanButton.visibleProperty());
-        rescanButton.visibleProperty().bind(scanBox.visibleProperty().not());
-        rescanButton.addEventFilter(ActionEvent.ACTION, event -> {
-            scan();
-            event.consume();
-        });
-
-        dialogPane.setPrefWidth(500);
-        dialogPane.setPrefHeight(360);
-
-        setResultConverter(dialogButton -> dialogButton != cancelButtonType ? psbt : null);
     }
 
-    private void scan() {
+    @Override
-        Hwi.EnumerateService enumerateService = new Hwi.EnumerateService(null);
+    protected DevicePane getDevicePane(Device device) {
-        enumerateService.setOnSucceeded(workerStateEvent -> {
+        return new DevicePane(psbt, device);
-            List<Device> devices = enumerateService.getValue();
-            setDevices(devices);
-        });
-        enumerateService.setOnFailed(workerStateEvent -> {
-            scanBox.setVisible(true);
-            scanLabel.setText(workerStateEvent.getSource().getException().getMessage());
-        });
-        enumerateService.start();
-    }
-
-    private void setDevices(List<Device> devices) {
-        deviceAccordion.getPanes().clear();
-
-        if(devices.isEmpty()) {
-            scanBox.setVisible(true);
-            scanLabel.setText("No devices found");
-        } else {
-            scanBox.setVisible(false);
-            for(Device device : devices) {
-                DevicePane devicePane = new DevicePane(DevicePane.DeviceOperation.SIGN, psbt, device);
-                deviceAccordion.getPanes().add(devicePane);
-            }
-        }
     }
 
     @Subscribe
     public void psbtSigned(PSBTSignedEvent event) {
         if(psbt == event.getPsbt()) {
+            EventManager.get().unregister(this);
             setResult(event.getSignedPsbt());
             this.close();
         }

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

@@ -47,8 +47,6 @@ public class QRDisplayDialog extends Dialog<UR> {
         this.ur = ur;
         this.encoder = new UREncoder(ur, MAX_FRAGMENT_LENGTH, MIN_FRAGMENT_LENGTH, 0);
 
-        EventManager.get().register(this);
-
         final DialogPane dialogPane = getDialogPane();
 
         StackPane stackPane = new StackPane();

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

@@ -64,6 +64,7 @@ public class WalletExportDialog extends Dialog<Wallet> {
 
     @Subscribe
     public void walletExported(WalletExportEvent event) {
+        EventManager.get().unregister(this);
         wallet = event.getWallet();
         setResult(wallet);
         this.close();

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

@@ -51,6 +51,7 @@ public class WalletImportDialog extends Dialog<Wallet> {
 
     @Subscribe
     public void walletImported(WalletImportEvent event) {
+        EventManager.get().unregister(this);
         wallet = event.getWallet();
         setResult(wallet);
         this.close();

src/main/java/com/sparrowwallet/sparrow/event/AddressDisplayedEvent.java

@@ -0,0 +1,17 @@
+package com.sparrowwallet.sparrow.event;
+
+/**
+ * This event is used by the DeviceAddressDialog to indicate that a USB device has displayed an address
+ *
+ */
+public class AddressDisplayedEvent {
+    private final String address;
+
+    public AddressDisplayedEvent(String address) {
+        this.address = address;
+    }
+
+    public String getAddress() {
+        return address;
+    }
+}

src/main/java/com/sparrowwallet/sparrow/event/UsbDeviceEvent.java

@@ -5,7 +5,7 @@ import com.sparrowwallet.sparrow.io.Device;
 import java.util.List;
 
 public class UsbDeviceEvent {
-    private List<Device> devices;
+    private final List<Device> devices;
 
     public UsbDeviceEvent(List<Device> devices) {
         this.devices = devices;

src/main/java/com/sparrowwallet/sparrow/io/Device.java

@@ -2,6 +2,8 @@ package com.sparrowwallet.sparrow.io;
 
 import com.sparrowwallet.drongo.wallet.WalletModel;
 
+import java.util.Objects;
+
 public class Device {
     private String type;
     private String path;
@@ -61,4 +63,22 @@ public class Device {
     public String toString() {
         return getModel() + ":" + getPath();
     }
+
+    @Override
+    public boolean equals(Object o) {
+        if(this == o) {
+            return true;
+        }
+        if(o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        Device device = (Device) o;
+        return Objects.equals(type, device.type) &&
+                Objects.equals(path, device.path);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(type, path);
+    }
 }

src/main/java/com/sparrowwallet/sparrow/io/DisplayAddressException.java

@@ -0,0 +1,19 @@
+package com.sparrowwallet.sparrow.io;
+
+public class DisplayAddressException extends Exception {
+    public DisplayAddressException() {
+        super();
+    }
+
+    public DisplayAddressException(String message) {
+        super(message);
+    }
+
+    public DisplayAddressException(Throwable cause) {
+        super(cause);
+    }
+
+    public DisplayAddressException(String message, Throwable cause) {
+        super(message, cause);
+    }
+}

src/main/java/com/sparrowwallet/sparrow/io/Hwi.java

@@ -3,6 +3,7 @@ package com.sparrowwallet.sparrow.io;
 import com.google.common.io.ByteStreams;
 import com.google.common.io.CharStreams;
 import com.google.gson.*;
+import com.sparrowwallet.drongo.protocol.ScriptType;
 import com.sparrowwallet.drongo.psbt.PSBT;
 import com.sparrowwallet.drongo.psbt.PSBTParseException;
 import com.sparrowwallet.drongo.wallet.WalletModel;
@@ -20,9 +21,8 @@ import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.attribute.PosixFilePermission;
 import java.nio.file.attribute.PosixFilePermissions;
-import java.util.Arrays;
+import java.util.*;
-import java.util.List;
+import java.util.stream.Collectors;
-import java.util.Set;
 import java.util.zip.GZIPInputStream;
 import java.util.zip.ZipEntry;
 import java.util.zip.ZipInputStream;
@@ -88,6 +88,37 @@ public class Hwi {
         }
     }
 
+    public String displayAddress(Device device, String passphrase, ScriptType scriptType, String derivationPath) throws DisplayAddressException {
+        try {
+            if(!List.of(ScriptType.P2PKH, ScriptType.P2SH_P2WPKH, ScriptType.P2WPKH).contains(scriptType)) {
+                throw new IllegalArgumentException("Cannot display address for script type " + scriptType + ": Only single sig types supported");
+            }
+
+            String type = null;
+            if(scriptType == ScriptType.P2SH_P2WPKH) {
+                type = "--sh_wpkh";
+            } else if(scriptType == ScriptType.P2WPKH) {
+                type = "--wpkh";
+            }
+
+            String output;
+            if(passphrase != null && device.getModel().equals(WalletModel.TREZOR_1)) {
+                output = execute(getDeviceCommand(device, passphrase, Command.DISPLAY_ADDRESS, "--path", derivationPath, type));
+            } else {
+                output = execute(getDeviceCommand(device, Command.DISPLAY_ADDRESS, "--path", derivationPath, type));
+            }
+
+            JsonObject result = JsonParser.parseString(output).getAsJsonObject();
+            if(result.get("address") != null) {
+                return result.get("address").getAsString();
+            } else {
+                throw new DisplayAddressException("Could not retrieve address");
+            }
+        } catch(IOException e) {
+            throw new DisplayAddressException(e);
+        }
+    }
+
     public PSBT signPSBT(Device device, String passphrase, PSBT psbt) throws SignTransactionException {
         try {
             String psbtBase64 = psbt.toBase64String();
@@ -251,12 +282,16 @@ public class Hwi {
         return List.of(getHwiExecutable(command).getAbsolutePath(), "--device-path", device.getPath(), "--device-type", device.getType(), command.toString());
     }
 
-    private List<String> getDeviceCommand(Device device, Command command, String data) throws IOException {
+    private List<String> getDeviceCommand(Device device, Command command, String... commandData) throws IOException {
-        return List.of(getHwiExecutable(command).getAbsolutePath(), "--device-path", device.getPath(), "--device-type", device.getType(), command.toString(), data);
+        List<String> elements = new ArrayList<>(List.of(getHwiExecutable(command).getAbsolutePath(), "--device-path", device.getPath(), "--device-type", device.getType(), command.toString()));
+        elements.addAll(Arrays.stream(commandData).filter(Objects::nonNull).collect(Collectors.toList()));
+        return elements;
     }
 
-    private List<String> getDeviceCommand(Device device, String passphrase, Command command, String data) throws IOException {
+    private List<String> getDeviceCommand(Device device, String passphrase, Command command, String... commandData) throws IOException {
-        return List.of(getHwiExecutable(command).getAbsolutePath(), "--device-path", device.getPath(), "--device-type", device.getType(), "--password", passphrase, command.toString(), data);
+        List<String> elements = new ArrayList<>(List.of(getHwiExecutable(command).getAbsolutePath(), "--device-path", device.getPath(), "--device-type", device.getType(), "--password", passphrase, command.toString()));
+        elements.addAll(Arrays.stream(commandData).filter(Objects::nonNull).collect(Collectors.toList()));
+        return elements;
     }
 
     public static class EnumerateService extends Service<List<Device>> {
@@ -337,6 +372,30 @@ public class Hwi {
         }
     }
 
+    public static class DisplayAddressService extends Service<String> {
+        private final Device device;
+        private final String passphrase;
+        private final ScriptType scriptType;
+        private final String derivationPath;
+
+        public DisplayAddressService(Device device, String passphrase, ScriptType scriptType, String derivationPath) {
+            this.device = device;
+            this.passphrase = passphrase;
+            this.scriptType = scriptType;
+            this.derivationPath = derivationPath;
+        }
+
+        @Override
+        protected Task<String> createTask() {
+            return new Task<>() {
+                protected String call() throws DisplayAddressException {
+                    Hwi hwi = new Hwi();
+                    return hwi.displayAddress(device, passphrase, scriptType, derivationPath);
+                }
+            };
+        }
+    }
+
     public static class GetXpubService extends Service<String> {
         private final Device device;
         private final String passphrase;
@@ -406,6 +465,7 @@ public class Hwi {
         ENUMERATE("enumerate", true),
         PROMPT_PIN("promptpin", true),
         SEND_PIN("sendpin", false),
+        DISPLAY_ADDRESS("displayaddress", true),
         GET_XPUB("getxpub", true),
         SIGN_TX("signtx", true);
 

src/main/java/com/sparrowwallet/sparrow/keystoreimport/HwUsbDevicesController.java

@@ -14,7 +14,7 @@ public class HwUsbDevicesController extends KeystoreImportDetailController {
 
     public void initializeView(List<Device> devices) {
         for(Device device : devices) {
-            DevicePane devicePane = new DevicePane(DevicePane.DeviceOperation.IMPORT, getMasterController().getWallet(), device);
+            DevicePane devicePane = new DevicePane(getMasterController().getWallet(), device);
             deviceAccordion.getPanes().add(devicePane);
         }
     }

src/main/java/com/sparrowwallet/sparrow/keystoreimport/HwUsbScanController.java

@@ -1,7 +1,10 @@
 package com.sparrowwallet.sparrow.keystoreimport;
 
+import com.sparrowwallet.sparrow.EventManager;
+import com.sparrowwallet.sparrow.event.UsbDeviceEvent;
 import com.sparrowwallet.sparrow.io.Device;
 import com.sparrowwallet.sparrow.io.Hwi;
+import javafx.application.Platform;
 import javafx.event.ActionEvent;
 import javafx.fxml.FXML;
 import javafx.scene.control.Button;
@@ -33,6 +36,7 @@ public class HwUsbScanController extends KeystoreImportDetailController {
             } else {
                 getMasterController().showUsbDevices(devices);
             }
+            Platform.runLater(() -> EventManager.get().post(new UsbDeviceEvent(devices)));
         });
         enumerateService.setOnFailed(workerStateEvent -> {
             getMasterController().showUsbError(enumerateService.getException().getMessage());

src/main/java/com/sparrowwallet/sparrow/transaction/HeadersController.java

@@ -11,6 +11,7 @@ import com.sparrowwallet.sparrow.EventManager;
 import com.sparrowwallet.sparrow.control.*;
 import com.sparrowwallet.sparrow.event.*;
 import com.sparrowwallet.sparrow.glyphfont.FontAwesome5Brands;
+import com.sparrowwallet.sparrow.io.Device;
 import com.sparrowwallet.sparrow.io.ElectrumServer;
 import com.sparrowwallet.sparrow.io.Storage;
 import com.sparrowwallet.sparrow.wallet.TransactionEntry;
@@ -627,15 +628,21 @@ public class HeadersController extends TransactionFormController implements Init
     }
 
     private void signUsbKeystores() {
-        if(headersForm.getSigningWallet().getKeystores().stream().noneMatch(keystore -> keystore.getSource().equals(KeystoreSource.HW_USB))) {
-            return;
-        }
-
         if(headersForm.getPsbt().isSigned()) {
             return;
         }
 
-        DeviceSignDialog dlg = new DeviceSignDialog(headersForm.getPsbt());
+        List<String> fingerprints = headersForm.getSigningWallet().getKeystores().stream().map(keystore -> keystore.getKeyDerivation().getMasterFingerprint()).collect(Collectors.toList());
+        List<Device> signingDevices = AppController.getDevices().stream().filter(device -> fingerprints.contains(device.getFingerprint())).collect(Collectors.toList());
+        if(signingDevices.isEmpty() && headersForm.getSigningWallet().getKeystores().stream().noneMatch(keystore -> keystore.getSource().equals(KeystoreSource.HW_USB))) {
+            return;
+        }
+
+        if(signingDevices.isEmpty()) {
+            signingDevices = AppController.getDevices().stream().filter(device -> device.getNeedsPinSent() || device.getNeedsPassphraseSent()).collect(Collectors.toList());
+        }
+
+        DeviceSignDialog dlg = new DeviceSignDialog(signingDevices.isEmpty() ? null : signingDevices, headersForm.getPsbt());
         Optional<PSBT> optionalSignedPsbt = dlg.showAndWait();
         if(optionalSignedPsbt.isPresent()) {
             PSBT signedPsbt = optionalSignedPsbt.get();

src/main/java/com/sparrowwallet/sparrow/wallet/ReceiveController.java

@@ -6,20 +6,28 @@ import com.google.zxing.client.j2se.MatrixToImageConfig;
 import com.google.zxing.client.j2se.MatrixToImageWriter;
 import com.google.zxing.common.BitMatrix;
 import com.google.zxing.qrcode.QRCodeWriter;
+import com.sparrowwallet.drongo.KeyDerivation;
 import com.sparrowwallet.drongo.KeyPurpose;
+import com.sparrowwallet.drongo.policy.PolicyType;
 import com.sparrowwallet.drongo.wallet.BlockTransactionHashIndex;
+import com.sparrowwallet.drongo.wallet.Keystore;
+import com.sparrowwallet.drongo.wallet.KeystoreSource;
+import com.sparrowwallet.drongo.wallet.Wallet;
 import com.sparrowwallet.sparrow.AppController;
 import com.sparrowwallet.sparrow.EventManager;
-import com.sparrowwallet.sparrow.control.CopyableLabel;
+import com.sparrowwallet.sparrow.control.*;
-import com.sparrowwallet.sparrow.control.CopyableTextField;
-import com.sparrowwallet.sparrow.control.ScriptArea;
 import com.sparrowwallet.sparrow.event.ReceiveToEvent;
+import com.sparrowwallet.sparrow.event.UsbDeviceEvent;
 import com.sparrowwallet.sparrow.event.WalletHistoryChangedEvent;
 import com.sparrowwallet.sparrow.event.WalletNodesChangedEvent;
 import com.sparrowwallet.sparrow.glyphfont.FontAwesome5;
+import com.sparrowwallet.sparrow.io.Device;
+import com.sparrowwallet.sparrow.io.Hwi;
+import javafx.application.Platform;
 import javafx.event.ActionEvent;
 import javafx.fxml.FXML;
 import javafx.fxml.Initializable;
+import javafx.scene.control.Button;
 import javafx.scene.control.Label;
 import javafx.scene.control.TextField;
 import javafx.scene.image.Image;
@@ -34,8 +42,10 @@ import java.io.ByteArrayOutputStream;
 import java.net.URL;
 import java.text.DateFormat;
 import java.text.SimpleDateFormat;
+import java.util.List;
 import java.util.ResourceBundle;
 import java.util.Set;
+import java.util.stream.Collectors;
 
 public class ReceiveController extends WalletFormController implements Initializable {
     private static final Logger log = LoggerFactory.getLogger(ReceiveController.class);
@@ -63,6 +73,9 @@ public class ReceiveController extends WalletFormController implements Initializ
     @FXML
     private CodeArea outputDescriptor;
 
+    @FXML
+    private Button displayAddress;
+
     private NodeEntry currentEntry;
 
     @Override
@@ -73,6 +86,9 @@ public class ReceiveController extends WalletFormController implements Initializ
     @Override
     public void initializeView() {
         initializeScriptField(scriptPubKeyArea);
+
+        displayAddress.managedProperty().bind(displayAddress.visibleProperty());
+        displayAddress.setVisible(false);
     }
 
     public void setNodeEntry(NodeEntry nodeEntry) {
@@ -97,6 +113,8 @@ public class ReceiveController extends WalletFormController implements Initializ
 
         outputDescriptor.clear();
         outputDescriptor.appendText(nodeEntry.getOutputDescriptor());
+
+        updateDisplayAddress(AppController.getDevices());
     }
 
     private void updateLastUsed() {
@@ -115,6 +133,33 @@ public class ReceiveController extends WalletFormController implements Initializ
         }
     }
 
+    private void updateDisplayAddress(List<Device> devices) {
+        //Can only display address for single sig wallets. See https://github.com/bitcoin-core/HWI/issues/224
+        Wallet wallet = getWalletForm().getWallet();
+        if(wallet.getPolicyType().equals(PolicyType.SINGLE)) {
+            List<Device> addressDevices = devices.stream().filter(device -> wallet.getKeystores().get(0).getKeyDerivation().getMasterFingerprint().equals(device.getFingerprint())).collect(Collectors.toList());
+            if(addressDevices.isEmpty()) {
+                addressDevices = devices.stream().filter(device -> device.getNeedsPinSent() || device.getNeedsPassphraseSent()).collect(Collectors.toList());
+            }
+
+            if(!addressDevices.isEmpty()) {
+                if(currentEntry != null) {
+                    displayAddress.setVisible(true);
+                }
+
+                displayAddress.setUserData(addressDevices);
+                return;
+            } else if(currentEntry != null && wallet.getKeystores().stream().anyMatch(keystore -> keystore.getSource().equals(KeystoreSource.HW_USB))) {
+                displayAddress.setVisible(true);
+                displayAddress.setUserData(null);
+                return;
+            }
+        }
+
+        displayAddress.setVisible(false);
+        displayAddress.setUserData(null);
+    }
+
     private Image getQrCode(String address) {
         try {
             QRCodeWriter qrCodeWriter = new QRCodeWriter();
@@ -137,6 +182,36 @@ public class ReceiveController extends WalletFormController implements Initializ
         setNodeEntry(freshEntry);
     }
 
+    @SuppressWarnings("unchecked")
+    public void displayAddress(ActionEvent event) {
+        Wallet wallet = getWalletForm().getWallet();
+        if(wallet.getPolicyType() == PolicyType.SINGLE && currentEntry != null) {
+            Keystore keystore = wallet.getKeystores().get(0);
+            KeyDerivation fullDerivation = keystore.getKeyDerivation().extend(currentEntry.getNode().getDerivation());
+
+            List<Device> possibleDevices = (List<Device>)displayAddress.getUserData();
+            if(possibleDevices != null && !possibleDevices.isEmpty()) {
+                if(possibleDevices.size() > 1 || possibleDevices.get(0).getNeedsPinSent() || possibleDevices.get(0).getNeedsPassphraseSent()) {
+                    DeviceAddressDialog dlg = new DeviceAddressDialog(possibleDevices.size() == 1 ? List.of(possibleDevices.get(0)) : null, wallet, fullDerivation);
+                    dlg.showAndWait();
+                } else {
+                    Device actualDevice = possibleDevices.get(0);
+                    Hwi.DisplayAddressService displayAddressService = new Hwi.DisplayAddressService(actualDevice, "", wallet.getScriptType(), fullDerivation.getDerivationPath());
+                    displayAddressService.setOnFailed(failedEvent -> {
+                        Platform.runLater(() -> {
+                            DeviceAddressDialog dlg = new DeviceAddressDialog(null, wallet, fullDerivation);
+                            dlg.showAndWait();
+                        });
+                    });
+                    displayAddressService.start();
+                }
+            } else {
+                DeviceAddressDialog dlg = new DeviceAddressDialog(null, wallet, fullDerivation);
+                dlg.showAndWait();
+            }
+        }
+    }
+
     public void clear() {
         if(currentEntry != null) {
             label.textProperty().unbindBidirectional(currentEntry.labelProperty());
@@ -189,4 +264,9 @@ public class ReceiveController extends WalletFormController implements Initializ
             }
         }
     }
-}
+
+    @Subscribe
+    public void usbDevicesFound(UsbDeviceEvent event) {
+        updateDisplayAddress(event.getDevices());
+    }
+}

src/main/resources/com/sparrowwallet/sparrow/wallet/receive.fxml

@@ -86,11 +86,19 @@
             <padding>
                 <Insets left="25.0" right="25.0" bottom="25.0" />
             </padding>
-            <Button fx:id="nextAddress" graphicTextGap="5" text="Get Next Address" defaultButton="true" AnchorPane.rightAnchor="10" onAction="#getNewAddress">
+            <HBox AnchorPane.rightAnchor="10">
-                <graphic>
+                <Button fx:id="displayAddress" graphicTextGap="5" text="Display Address" AnchorPane.rightAnchor="10" onAction="#displayAddress">
-                    <Glyph fontFamily="FontAwesome" icon="ARROW_DOWN" fontSize="12" />
+                    <graphic>
-                </graphic>
+                        <Glyph fontFamily="Font Awesome 5 Brands Regular" fontSize="12" icon="USB" />
-            </Button>
+                    </graphic>
+                </Button>
+                <Region HBox.hgrow="ALWAYS" style="-fx-min-width: 20px" />
+                <Button fx:id="nextAddress" graphicTextGap="5" text="Get Next Address" defaultButton="true" AnchorPane.rightAnchor="10" onAction="#getNewAddress">
+                    <graphic>
+                        <Glyph fontFamily="FontAwesome" icon="ARROW_DOWN" fontSize="12" />
+                    </graphic>
+                </Button>
+            </HBox>
         </AnchorPane>
     </bottom>
 </BorderPane>