add utility buttons to import and export xpubs with qr codes, show slip132 versions

drongo

@@ -1 +1 @@
-Subproject commit fee042679938316f034ceee137cfa056be566ffd
+Subproject commit 3642ddc9581c4485b13d4d0fffee6290703a5768

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

@@ -76,6 +76,28 @@ public class QRDisplayDialog extends Dialog<UR> {
         setResultConverter(dialogButton -> dialogButton != cancelButtonType ? ur : null);
     }
 
+    public QRDisplayDialog(String data) {
+        this.ur = null;
+        this.encoder = null;
+
+        final DialogPane dialogPane = getDialogPane();
+        AppController.setStageIcon(dialogPane.getScene().getWindow());
+
+        StackPane stackPane = new StackPane();
+        qrImageView = new ImageView();
+        stackPane.getChildren().add(qrImageView);
+
+        dialogPane.setContent(Borders.wrap(stackPane).lineBorder().buildAll());
+        qrImageView.setImage(getQrCode(data));
+
+        final ButtonType cancelButtonType = new javafx.scene.control.ButtonType("Cancel", ButtonBar.ButtonData.CANCEL_CLOSE);
+        dialogPane.getButtonTypes().addAll(cancelButtonType);
+        dialogPane.setPrefWidth(500);
+        dialogPane.setPrefHeight(550);
+
+        setResultConverter(dialogButton -> dialogButton != cancelButtonType ? ur : null);
+    }
+
     private void nextPart() {
         String fragment = encoder.nextPart();
         currentPart = fragment.toUpperCase();

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

@@ -1,6 +1,7 @@
 package com.sparrowwallet.sparrow.control;
 
 import com.github.sarxos.webcam.WebcamResolution;
+import com.sparrowwallet.drongo.ExtendedKey;
 import com.sparrowwallet.drongo.Utils;
 import com.sparrowwallet.drongo.address.Address;
 import com.sparrowwallet.drongo.protocol.Base43;
@@ -106,6 +107,15 @@ public class QRScanDialog extends Dialog<QRScanDialog.Result> {
                 Transaction transaction;
                 BitcoinURI bitcoinURI;
                 Address address;
+                ExtendedKey extendedKey;
+                try {
+                    extendedKey = ExtendedKey.fromDescriptor(qrtext);
+                    result = new Result(extendedKey);
+                    return;
+                } catch(Exception e) {
+                    //Ignore, not a valid xpub
+                }
+
                 try {
                     bitcoinURI = new BitcoinURI(qrtext);
                     result = new Result(bitcoinURI);
@@ -180,6 +190,7 @@ public class QRScanDialog extends Dialog<QRScanDialog.Result> {
         public final Transaction transaction;
         public final PSBT psbt;
         public final BitcoinURI uri;
+        public final ExtendedKey extendedKey;
         public final String error;
         public final Throwable exception;
 
@@ -187,6 +198,7 @@ public class QRScanDialog extends Dialog<QRScanDialog.Result> {
             this.transaction = transaction;
             this.psbt = null;
             this.uri = null;
+            this.extendedKey = null;
             this.error = null;
             this.exception = null;
         }
@@ -195,6 +207,7 @@ public class QRScanDialog extends Dialog<QRScanDialog.Result> {
             this.transaction = null;
             this.psbt = psbt;
             this.uri = null;
+            this.extendedKey = null;
             this.error = null;
             this.exception = null;
         }
@@ -203,6 +216,7 @@ public class QRScanDialog extends Dialog<QRScanDialog.Result> {
             this.transaction = null;
             this.psbt = null;
             this.uri = uri;
+            this.extendedKey = null;
             this.error = null;
             this.exception = null;
         }
@@ -211,6 +225,16 @@ public class QRScanDialog extends Dialog<QRScanDialog.Result> {
             this.transaction = null;
             this.psbt = null;
             this.uri = BitcoinURI.fromAddress(address);
+            this.extendedKey = null;
+            this.error = null;
+            this.exception = null;
+        }
+
+        public Result(ExtendedKey extendedKey) {
+            this.transaction = null;
+            this.psbt = null;
+            this.uri = null;
+            this.extendedKey = extendedKey;
             this.error = null;
             this.exception = null;
         }
@@ -219,6 +243,7 @@ public class QRScanDialog extends Dialog<QRScanDialog.Result> {
             this.transaction = null;
             this.psbt = null;
             this.uri = null;
+            this.extendedKey = null;
             this.error = error;
             this.exception = null;
         }
@@ -227,6 +252,7 @@ public class QRScanDialog extends Dialog<QRScanDialog.Result> {
             this.transaction = null;
             this.psbt = null;
             this.uri = null;
+            this.extendedKey = null;
             this.error = null;
             this.exception = exception;
         }

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

@@ -23,6 +23,7 @@ public class FontAwesome5 extends GlyphFont {
         CHECK_CIRCLE('\uf058'),
         CIRCLE('\uf111'),
         COINS('\uf51e'),
+        EXCHANGE_ALT('\uf362'),
         EXCLAMATION_CIRCLE('\uf06a'),
         EXCLAMATION_TRIANGLE('\uf071'),
         EXTERNAL_LINK_ALT('\uf35d'),

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

@@ -7,6 +7,8 @@ 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.QRDisplayDialog;
+import com.sparrowwallet.sparrow.control.QRScanDialog;
 import com.sparrowwallet.sparrow.control.SeedDisplayDialog;
 import com.sparrowwallet.sparrow.control.WalletPasswordDialog;
 import com.sparrowwallet.sparrow.event.StorageEvent;
@@ -29,6 +31,9 @@ import org.controlsfx.validation.ValidationResult;
 import org.controlsfx.validation.ValidationSupport;
 import org.controlsfx.validation.Validator;
 import org.controlsfx.validation.decoration.StyleClassValidationDecoration;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import tornadofx.control.Field;
 
 import java.net.URL;
 import java.util.Optional;
@@ -36,6 +41,8 @@ import java.util.ResourceBundle;
 import java.util.stream.Collectors;
 
 public class KeystoreController extends WalletFormController implements Initializable {
+    private static final Logger log = LoggerFactory.getLogger(KeystoreController.class);
+
     private Keystore keystore;
 
     @FXML
@@ -56,6 +63,9 @@ public class KeystoreController extends WalletFormController implements Initiali
     @FXML
     private TextField label;
 
+    @FXML
+    private Field xpubField;
+
     @FXML
     private TextArea xpub;
 
@@ -65,6 +75,15 @@ public class KeystoreController extends WalletFormController implements Initiali
     @FXML
     private TextField fingerprint;
 
+    @FXML
+    private Button scanXpubQR;
+
+    @FXML
+    private Button displayXpubQR;
+
+    @FXML
+    private Button switchXpubHeader;
+
     private final ValidationSupport validationSupport = new ValidationSupport();
 
     @Override
@@ -87,6 +106,9 @@ public class KeystoreController extends WalletFormController implements Initiali
         }
 
         viewSeedButton.managedProperty().bind(viewSeedButton.visibleProperty());
+        scanXpubQR.managedProperty().bind(scanXpubQR.visibleProperty());
+        displayXpubQR.managedProperty().bind(displayXpubQR.visibleProperty());
+        displayXpubQR.visibleProperty().bind(scanXpubQR.visibleProperty().not());
 
         updateType();
 
@@ -97,6 +119,8 @@ public class KeystoreController extends WalletFormController implements Initiali
         if(keystore.getExtendedPublicKey() != null) {
             xpub.setText(keystore.getExtendedPublicKey().toString());
             setXpubContext(keystore.getExtendedPublicKey());
+        } else {
+            switchXpubHeader.setDisable(true);
         }
 
         if(keystore.getKeyDerivation() != null) {
@@ -121,15 +145,19 @@ public class KeystoreController extends WalletFormController implements Initiali
             }
         });
         xpub.textProperty().addListener((observable, oldValue, newValue) -> {
-            if(ExtendedKey.isValid(newValue)) {
+            boolean valid = ExtendedKey.isValid(newValue);
+            if(valid) {
                 ExtendedKey extendedKey = ExtendedKey.fromDescriptor(newValue);
                 setXpubContext(extendedKey);
-                keystore.setExtendedPublicKey(extendedKey);
-                EventManager.get().post(new SettingsChangedEvent(walletForm.getWallet(), SettingsChangedEvent.Type.KEYSTORE_XPUB));
+                if(!extendedKey.equals(keystore.getExtendedPublicKey()) && extendedKey.getKey().isPubKeyOnly()) {
+                    keystore.setExtendedPublicKey(extendedKey);
+                    EventManager.get().post(new SettingsChangedEvent(walletForm.getWallet(), SettingsChangedEvent.Type.KEYSTORE_XPUB));
+                }
             } else {
-                xpub.setTooltip(null);
                 xpub.setContextMenu(null);
+                switchXpubHeader.setDisable(true);
             }
+            scanXpubQR.setVisible(!valid);
         });
     }
 
@@ -148,7 +176,7 @@ public class KeystoreController extends WalletFormController implements Initiali
         if(header != Network.get().getXpubHeader()) {
             String otherPub = extendedKey.getExtendedKey(header);
 
-            MenuItem copyOtherPub = new MenuItem("Copy " + header.getName().replace('p', 'P'));
+            MenuItem copyOtherPub = new MenuItem("Copy " + header.getDisplayName());
             copyOtherPub.setOnAction(AE -> {
                 contextMenu.hide();
                 ClipboardContent content = new ClipboardContent();
@@ -157,13 +185,16 @@ public class KeystoreController extends WalletFormController implements Initiali
             });
             contextMenu.getItems().add(copyOtherPub);
 
-            Tooltip tooltip = new Tooltip(otherPub);
-            xpub.setTooltip(tooltip);
+            xpubField.setText("xPub / " + header.getDisplayName() + ":");
+            switchXpubHeader.setDisable(false);
+            switchXpubHeader.setTooltip(new Tooltip("Show as " + header.getDisplayName()));
         } else {
-            xpub.setTooltip(null);
+            xpubField.setText("xPub:");
+            switchXpubHeader.setDisable(true);
         }
 
         xpub.setContextMenu(contextMenu);
+        scanXpubQR.setVisible(false);
     }
 
     public void selectSource(ActionEvent event) {
@@ -223,6 +254,7 @@ public class KeystoreController extends WalletFormController implements Initiali
         fingerprint.setEditable(editable);
         derivation.setEditable(editable);
         xpub.setEditable(editable);
+        scanXpubQR.setVisible(editable);
     }
 
     private String getTypeLabel(Keystore keystore) {
@@ -284,6 +316,7 @@ public class KeystoreController extends WalletFormController implements Initiali
 
             if(keystore.getExtendedPublicKey() != null) {
                 xpub.setText(keystore.getExtendedPublicKey().toString());
+                setXpubContext(keystore.getExtendedPublicKey());
             } else {
                 xpub.setText("");
             }
@@ -321,6 +354,44 @@ public class KeystoreController extends WalletFormController implements Initiali
         dlg.showAndWait();
     }
 
+    public void scanXpubQR(ActionEvent event) {
+        QRScanDialog qrScanDialog = new QRScanDialog();
+        Optional<QRScanDialog.Result> optionalResult = qrScanDialog.showAndWait();
+        if(optionalResult.isPresent()) {
+            QRScanDialog.Result result = optionalResult.get();
+            if(result.extendedKey != null && result.extendedKey.getKey().isPubKeyOnly()) {
+                xpub.setText(result.extendedKey.getExtendedKey());
+            } else if(result.error != null) {
+                AppController.showErrorDialog("Invalid QR Code", result.error);
+            } else if(result.exception != null) {
+                log.error("Error opening webcam", result.exception);
+                AppController.showErrorDialog("Error opening webcam", result.exception.getMessage());
+            } else {
+                AppController.showErrorDialog("Invalid QR Code", "QR Code did not contain a valid xPub");
+            }
+        }
+    }
+
+    public void displayXpubQR(ActionEvent event) {
+        QRDisplayDialog qrDisplayDialog = new QRDisplayDialog(xpub.getText());
+        qrDisplayDialog.showAndWait();
+    }
+
+    public void switchXpubHeader(ActionEvent event) {
+        if(keystore.getExtendedPublicKey() != null) {
+            ExtendedKey.Header header = ExtendedKey.Header.fromScriptType(walletForm.getWallet().getScriptType(), false);
+            if(!xpub.getText().startsWith(header.getName())) {
+                String otherPub = keystore.getExtendedPublicKey().getExtendedKey(header);
+                xpub.setText(otherPub);
+                switchXpubHeader.setTooltip(new Tooltip("Show as xPub"));
+            } else {
+                String xPub = keystore.getExtendedPublicKey().getExtendedKey();
+                xpub.setText(xPub);
+                switchXpubHeader.setTooltip(new Tooltip("Show as " + header.getDisplayName()));
+            }
+        }
+    }
+
     @Subscribe
     public void update(SettingsChangedEvent event) {
         if(walletForm.getWallet().equals(event.getWallet()) && event.getType().equals(SettingsChangedEvent.Type.SCRIPT_TYPE)) {

src/main/resources/com/sparrowwallet/sparrow/wallet/keystore.css

@@ -21,3 +21,12 @@
 #type {
     -fx-padding: 0 17 0 0;
 }
+
+.xpub-buttons {
+    -fx-max-width: 40;
+    -fx-padding: 0 0 0 3;
+}
+
+.xpub-buttons .button {
+    -fx-pref-width: 35;
+}

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

@@ -41,13 +41,36 @@
                 <TextField fx:id="label" maxWidth="160"/>
             </Field>
             <Field text="Master fingerprint:">
-                <TextField fx:id="fingerprint" maxWidth="80" promptText="ffffffff"/> <HelpLabel helpText="A master fingerprint is the first 4 bytes of the master public key hash. It is safe to use any valid value (ffffffff) for Watch Only Wallets." />
+                <TextField fx:id="fingerprint" maxWidth="80" promptText="00000000"/> <HelpLabel helpText="A master fingerprint is the first 4 bytes of the master public key hash. It is safe to use any valid value (00000000) for Watch Only Wallets." />
             </Field>
             <Field text="Derivation:">
-                <TextField fx:id="derivation" maxWidth="200"/>
+                <TextField fx:id="derivation" maxWidth="200"/> <HelpLabel helpText="The derivation path to the xPub from the master private key. For safety, derivations that match defaults for other script types are not valid." />
             </Field>
-            <Field text="xPub:">
-                <TextArea fx:id="xpub" wrapText="true" prefRowCount="2" maxHeight="50" />
+            <Field fx:id="xpubField" text="xPub:">
+                <TextArea fx:id="xpub" wrapText="true" prefRowCount="2" maxHeight="52" />
+                <VBox styleClass="xpub-buttons" HBox.hgrow="NEVER">
+                    <Button fx:id="scanXpubQR" onAction="#scanXpubQR">
+                        <graphic>
+                            <Glyph fontFamily="Font Awesome 5 Free Solid" fontSize="12" icon="CAMERA" />
+                        </graphic>
+                        <tooltip>
+                            <Tooltip text="Scan a QR code" />
+                        </tooltip>
+                    </Button>
+                    <Button fx:id="displayXpubQR" onAction="#displayXpubQR">
+                        <graphic>
+                            <Glyph fontFamily="Font Awesome 5 Free Solid" fontSize="12" icon="QRCODE" />
+                        </graphic>
+                        <tooltip>
+                            <Tooltip text="Display as a QR code" />
+                        </tooltip>
+                    </Button>
+                    <Button fx:id="switchXpubHeader" onAction="#switchXpubHeader">
+                        <graphic>
+                            <Glyph fontFamily="Font Awesome 5 Free Solid" fontSize="12" icon="EXCHANGE_ALT" />
+                        </graphic>
+                    </Button>
+                </VBox>
             </Field>
         </Fieldset>
     </Form>