Examples with Binding com.vaadin.flow.data.binder.Binder.Binding used on opensource projects

Example 1 with Binding

use of com.vaadin.flow.data.binder.Binder.Binding in project flow by vaadin.

the class BinderConverterValidatorTest method binderLoad_withCrossFieldValidation_clearsErrors.

@Test
public void binderLoad_withCrossFieldValidation_clearsErrors() {
    TestTextField lastNameField = new TestTextField();
    final SerializablePredicate<String> lengthPredicate = v -> v.length() > 2;
    BindingBuilder<Person, String> firstNameBinding = binder.forField(nameField).withValidator(lengthPredicate, "length");
    firstNameBinding.bind(Person::getFirstName, Person::setFirstName);
    Binding<Person, String> lastNameBinding = binder.forField(lastNameField).withValidator(v -> !nameField.getValue().isEmpty() || lengthPredicate.test(v), "err").withValidator(lengthPredicate, "length").bind(Person::getLastName, Person::setLastName);
    // this will be triggered as a new bean is bound with binder.bind(),
    // causing a validation error to be visible until reset is done
    nameField.addValueChangeListener(v -> lastNameBinding.validate());
    Person person = new Person();
    binder.setBean(person);
    Assert.assertFalse(componentErrors.containsKey(nameField));
    Assert.assertFalse(componentErrors.containsKey(lastNameField));
    nameField.setValue("x");
    Assert.assertTrue(componentErrors.containsKey(nameField));
    Assert.assertTrue(componentErrors.containsKey(lastNameField));
    binder.setBean(person);
    Assert.assertFalse(componentErrors.containsKey(nameField));
    Assert.assertFalse(componentErrors.containsKey(lastNameField));
}

Example 2 with Binding

use of com.vaadin.flow.data.binder.Binder.Binding in project flow by vaadin.

the class BinderConverterValidatorTest method validate_failedBothBeanValidatorAndFieldValidator.

@Test
public void validate_failedBothBeanValidatorAndFieldValidator() {
    String msg1 = "foo";
    BindingBuilder<Person, String> binding = binder.forField(nameField).withValidator(new NotEmptyValidator<>(msg1));
    binding.bind(Person::getFirstName, Person::setFirstName);
    String msg2 = "bar";
    binder.withValidator(Validator.from(bean -> false, msg2));
    Person person = new Person();
    binder.setBean(person);
    List<BindingValidationStatus<?>> errors = binder.validate().getFieldValidationErrors();
    assertEquals(1, errors.size());
    BindingValidationStatus<?> error = errors.get(0);
    assertEquals(msg1, error.getMessage().get());
    assertEquals(nameField, error.getField());
    assertEquals(msg1, nameField.getErrorMessage());
}

Example 3 with Binding

use of com.vaadin.flow.data.binder.Binder.Binding in project flow by vaadin.

the class BinderTest method save_bound_bean_disable_validation_binding.

@Test
public void save_bound_bean_disable_validation_binding() throws ValidationException {
    Binder<Person> binder = new Binder<>();
    Binding<Person, String> nameBinding = binder.forField(nameField).withValidator((value, context) -> {
        if (value.equals("Mike"))
            return ValidationResult.ok();
        else
            return ValidationResult.error("value must be Mike");
    }).bind(Person::getFirstName, Person::setFirstName);
    binder.forField(ageField).withConverter(new StringToIntegerConverter("")).bind(Person::getAge, Person::setAge);
    Person person = new Person();
    String fieldValue = "John";
    nameField.setValue(fieldValue);
    int age = 10;
    ageField.setValue("10");
    person.setFirstName("Mark");
    nameBinding.setValidatorsDisabled(true);
    binder.writeBean(person);
    // name is now written as validation was disabled
    assertEquals(fieldValue, person.getFirstName());
    assertEquals(age, person.getAge());
}

Example 4 with Binding

use of com.vaadin.flow.data.binder.Binder.Binding in project flow by vaadin.

the class BinderTest method setRequired_withCustomValidator_fieldGetsRequiredIndicatorAndValidator.

@Test
public void setRequired_withCustomValidator_fieldGetsRequiredIndicatorAndValidator() {
    TestTextField textField = new TestTextField();
    assertFalse(textField.isRequiredIndicatorVisible());
    BindingBuilder<Person, String> binding = binder.forField(textField);
    assertFalse(textField.isRequiredIndicatorVisible());
    AtomicInteger invokes = new AtomicInteger();
    Validator<String> customRequiredValidator = (value, context) -> {
        invokes.incrementAndGet();
        if (StringUtils.isBlank(value)) {
            return ValidationResult.error("Input is required.");
        }
        return ValidationResult.ok();
    };
    binding.asRequired(customRequiredValidator);
    assertTrue(textField.isRequiredIndicatorVisible());
    binding.bind(Person::getFirstName, Person::setFirstName);
    binder.setBean(item);
    assertThat(textField.getErrorMessage(), isEmptyString());
    assertEquals(1, invokes.get());
    textField.setValue("        ");
    String errorMessage = textField.getErrorMessage();
    assertNotNull(errorMessage);
    assertEquals("Input is required.", componentErrors.get(textField));
    // validation is done for all changed bindings once.
    assertEquals(2, invokes.get());
    textField.setValue("value");
    assertFalse(textField.isInvalid());
    assertTrue(textField.isRequiredIndicatorVisible());
}

Example 5 with Binding

use of com.vaadin.flow.data.binder.Binder.Binding in project flow by vaadin.

the class BinderConverterValidatorTest method validate_failedBeanValidatorWithFieldValidator.

@Test
public void validate_failedBeanValidatorWithFieldValidator() {
    String msg = "foo";
    BindingBuilder<Person, String> binding = binder.forField(nameField).withValidator(new NotEmptyValidator<>(msg));
    binding.bind(Person::getFirstName, Person::setFirstName);
    binder.withValidator(Validator.from(bean -> false, msg));
    Person person = new Person();
    binder.setBean(person);
    List<BindingValidationStatus<?>> errors = binder.validate().getFieldValidationErrors();
    assertEquals(1, errors.size());
    BindingValidationStatus<?> error = errors.get(0);
    assertEquals(msg, error.getMessage().get());
    assertEquals(nameField, error.getField());
    assertInvalidField(msg, nameField);
}