Add password validations to UnlockView

desktop/src/main/java/bisq/desktop/common/validation/InputValidator.java

@@ -18,12 +18,17 @@
 package bisq.desktop.common.validation;
 
 
+import bisq.desktop.components.controls.validator.ValidatorBase;
 import bisq.i18n.Res;
 
 import java.math.BigInteger;
 import java.util.Objects;
 import java.util.function.Function;
 
+/**
+ * Deprecated. Use {@link ValidatorBase} instead.
+ */
+@Deprecated
 public class InputValidator {
 
     public ValidationResult validate(String input) {

desktop/src/main/java/bisq/desktop/common/validation/PasswordValidator.java

@@ -18,8 +18,13 @@
 package bisq.desktop.common.validation;
 
 
+import bisq.desktop.components.controls.validator.ValidatorBase;
 import bisq.i18n.Res;
 
+/**
+ * Deprecated. Use an instance of {@link ValidatorBase} instead.
+ */
+@Deprecated
 public class PasswordValidator extends InputValidator {
     public ValidationResult validate(CharSequence value) {
         //todo trim

desktop/src/main/java/bisq/desktop/components/controls/MaterialPasswordField.java

@@ -60,6 +60,7 @@ public MaterialPasswordField(@Nullable String description, @Nullable String prom
                     if ((newValue == null || newValue.length() == 0) && !textProperty().isBound()) {
                         setText("");
                     }
+                    validate();
                 }).get());
 
         password.set(getText());

desktop/src/main/java/bisq/desktop/components/controls/MaterialTextField.java

@@ -22,11 +22,15 @@
 import bisq.desktop.common.threading.UIThread;
 import bisq.desktop.common.utils.ClipboardUtil;
 import bisq.desktop.common.validation.InputValidator;
+import bisq.desktop.components.controls.validator.ValidationControl;
+import bisq.desktop.components.controls.validator.ValidatorBase;
 import bisq.i18n.Res;
 import de.jensd.fx.fontawesome.AwesomeIcon;
 import javafx.beans.property.ReadOnlyBooleanProperty;
+import javafx.beans.property.ReadOnlyObjectProperty;
 import javafx.beans.property.StringProperty;
 import javafx.beans.value.ChangeListener;
+import javafx.collections.ObservableList;
 import javafx.event.ActionEvent;
 import javafx.event.EventHandler;
 import javafx.geometry.Pos;
@@ -42,6 +46,8 @@
 import javax.annotation.Nullable;
 import java.lang.ref.WeakReference;
 
+import static bisq.desktop.components.controls.validator.ValidatorBase.PSEUDO_CLASS_ERROR;
+
 @Slf4j
 public class MaterialTextField extends Pane {
     protected final Region bg = new Region();
@@ -80,7 +86,7 @@ public MaterialTextField(@Nullable String description, @Nullable String prompt,
 
         selectionLine.setPrefWidth(0);
         selectionLine.setPrefHeight(2);
-        selectionLine.getStyleClass().add("bisq-green-line");
+        selectionLine.getStyleClass().add("material-text-field-selection-line");
         selectionLine.setMouseTransparent(true);
 
         descriptionLabel.setLayoutX(16);
@@ -142,10 +148,45 @@ public MaterialTextField(@Nullable String description, @Nullable String prompt,
         textInputControl.setOnMouseEntered(e -> onMouseEntered());
         textInputControl.setOnMouseExited(e -> onMouseExited());
 
+        validationControl = new ValidationControl(this.textInputControl);
+
         doLayout();
         update();
     }
 
+    ///////////////////////////////////////////////////////////////////////////////////////////////////
+    // Validation
+    ///////////////////////////////////////////////////////////////////////////////////////////////////
+
+    protected ValidationControl validationControl;
+
+    public ValidatorBase getActiveValidator() {
+        return validationControl.getActiveValidator();
+    }
+
+    public ReadOnlyObjectProperty<ValidatorBase> activeValidatorProperty() {
+        return validationControl.activeValidatorProperty();
+    }
+
+    public ObservableList<ValidatorBase> getValidators() {
+        return validationControl.getValidators();
+    }
+
+    public void setValidators(ValidatorBase... validators) {
+        validationControl.setValidators(validators);
+    }
+
+    public boolean validate() {
+        var isValid = validationControl.validate();
+        selectionLine.pseudoClassStateChanged(PSEUDO_CLASS_ERROR, !isValid);
+        descriptionLabel.pseudoClassStateChanged(PSEUDO_CLASS_ERROR, !isValid);
+        return isValid;
+    }
+
+    public void resetValidation() {
+        validationControl.resetValidation();
+    }
+
 
     ///////////////////////////////////////////////////////////////////////////////////////////////////
     // Description

desktop/src/main/java/bisq/desktop/components/controls/validator/RequiredFieldValidator.java

@@ -0,0 +1,16 @@
+package bisq.desktop.components.controls.validator;
+
+import javafx.scene.control.TextInputControl;
+
+public class RequiredFieldValidator extends ValidatorBase {
+
+    public RequiredFieldValidator(String message) {
+        super(message);
+    }
+
+    @Override
+    protected void eval() {
+        TextInputControl textField = (TextInputControl) srcControl.get();
+        hasErrors.set(textField.getText() == null || textField.getText().isEmpty());
+    }
+}

desktop/src/main/java/bisq/desktop/components/controls/validator/TextMinLengthValidator.java

@@ -0,0 +1,24 @@
+package bisq.desktop.components.controls.validator;
+
+import javafx.scene.control.TextInputControl;
+
+public class TextMinLengthValidator extends ValidatorBase {
+
+    private static final int DEFAULT_MIN_LENGTH = 8;
+    private final int minLength;
+
+    public TextMinLengthValidator(String message, int minLength) {
+        super(message);
+        this.minLength = minLength;
+    }
+
+    public TextMinLengthValidator(String message) {
+        this(message, DEFAULT_MIN_LENGTH);
+    }
+
+    @Override
+    protected void eval() {
+        var textField = (TextInputControl) srcControl.get();
+        hasErrors.set(textField.getText().length() < minLength);
+    }
+}

desktop/src/main/java/bisq/desktop/components/controls/validator/ValidationControl.java

@@ -0,0 +1,68 @@
+package bisq.desktop.components.controls.validator;
+
+import javafx.beans.property.ReadOnlyObjectProperty;
+import javafx.beans.property.ReadOnlyObjectWrapper;
+import javafx.collections.FXCollections;
+import javafx.collections.ObservableList;
+import javafx.scene.control.Control;
+
+public class ValidationControl {
+
+    private final ReadOnlyObjectWrapper<ValidatorBase> activeValidator = new ReadOnlyObjectWrapper<>();
+
+    private final Control control;
+
+    public ValidationControl(Control control) {
+        this.control = control;
+    }
+
+    public ValidatorBase getActiveValidator() {
+        return activeValidator.get();
+    }
+
+    public ReadOnlyObjectProperty<ValidatorBase> activeValidatorProperty() {
+        return this.activeValidator.getReadOnlyProperty();
+    }
+
+    ReadOnlyObjectWrapper<ValidatorBase> activeValidatorWritableProperty() {
+        return this.activeValidator;
+    }
+
+    /**
+     * list of validators that will validate the text value upon calling
+     * {{@link #validate()}
+     */
+    private final ObservableList<ValidatorBase> validators = FXCollections.observableArrayList();
+
+    public ObservableList<ValidatorBase> getValidators() {
+        return validators;
+    }
+
+    public void setValidators(ValidatorBase... validators) {
+        this.validators.addAll(validators);
+    }
+
+    /**
+     * validates the text value using the list of validators provided by the user
+     * {{@link #setValidators(ValidatorBase...)}
+     *
+     * @return true if the value is valid else false
+     */
+    public boolean validate() {
+        for (ValidatorBase validator : validators) {
+            validator.setSrcControl(control);
+            validator.validate();
+            if (validator.getHasErrors()) {
+                activeValidator.set(validator);
+                return false;
+            }
+        }
+        activeValidator.set(null);
+        return true;
+    }
+
+    public void resetValidation() {
+        control.pseudoClassStateChanged(ValidatorBase.PSEUDO_CLASS_ERROR, false);
+        activeValidator.set(null);
+    }
+}