Package com.vaadin.flow.component.textfield

Class EmailField

java.lang.Object
com.vaadin.flow.component.Component
com.vaadin.flow.component.AbstractField<C,T>
com.vaadin.flow.component.AbstractSinglePropertyField<TComponent,TValue>
com.vaadin.flow.component.textfield.TextFieldBase<EmailField,String>
com.vaadin.flow.component.textfield.EmailField
All Implemented Interfaces:
com.vaadin.flow.component.AttachNotifier, com.vaadin.flow.component.BlurNotifier<EmailField>, com.vaadin.flow.component.CompositionNotifier, com.vaadin.flow.component.DetachNotifier, com.vaadin.flow.component.Focusable<EmailField>, com.vaadin.flow.component.FocusNotifier<EmailField>, com.vaadin.flow.component.HasAriaLabel, com.vaadin.flow.component.HasElement, com.vaadin.flow.component.HasEnabled, com.vaadin.flow.component.HasHelper, com.vaadin.flow.component.HasLabel, com.vaadin.flow.component.HasPlaceholder, com.vaadin.flow.component.HasSize, com.vaadin.flow.component.HasStyle, com.vaadin.flow.component.HasTheme, com.vaadin.flow.component.HasValidation, com.vaadin.flow.component.HasValue<com.vaadin.flow.component.AbstractField.ComponentValueChangeEvent<EmailField,String>,String>, com.vaadin.flow.component.HasValueAndElement<com.vaadin.flow.component.AbstractField.ComponentValueChangeEvent<EmailField,String>,String>, com.vaadin.flow.component.InputNotifier, com.vaadin.flow.component.KeyNotifier, HasAllowedCharPattern, HasClearButton, HasPrefix, HasSuffix, HasThemeVariant<TextFieldVariant>, HasTooltip, HasValidationProperties, InputField<com.vaadin.flow.component.AbstractField.ComponentValueChangeEvent<EmailField,String>,String>, HasAutocapitalize, HasAutocomplete, HasAutocorrect, HasPrefixAndSuffix, com.vaadin.flow.data.binder.HasValidator<String>, com.vaadin.flow.data.value.HasValueChangeMode, Serializable
@Tag("vaadin-email-field") @NpmPackage(value="@vaadin/email-field", version="25.0.0-alpha17") @JsModule("@vaadin/email-field/src/vaadin-email-field.js") public class EmailField extends TextFieldBase<EmailField,String> implements HasAllowedCharPattern, HasThemeVariant<TextFieldVariant>
Email Field is an extension of Text Field that only accepts email addresses as input.

Validation

Email Field comes with a built-in validation mechanism based on constraints. Validation is triggered whenever the user applies an input change, for example by pressing Enter or blurring the field. Programmatic value changes trigger validation as well. In eager and lazy value change modes, validation is also triggered on every character press with a delay according to the selected mode.

Validation verifies that the address adheres to the RFC 5322 standard email format and satisfies the specified constraints. If validation fails, the component is marked as invalid and an error message is displayed below the input.

The following constraints are supported:

setPattern(String) can be used to modify the default email format, for example, to require a specific email domain.

Error messages for email format and constraints can be configured with the EmailField.EmailFieldI18n object, using the respective properties. If you want to provide a single catch-all error message, you can also use the setErrorMessage(String) method. Note that such an error message will take priority over i18n error messages if both are set.

In addition to validation, constraints may also limit user input. For example, the browser will prevent the user from entering more text than specified by the maximum length constraint.

For more advanced validation that requires custom rules, you can use Binder. By default, before running custom validators, Binder will also check the component constraints and display error messages from the EmailField.EmailFieldI18n object. The exception is the required constraint, for which Binder provides its own API, see asRequired().

However, if Binder doesn't fit your needs and you want to implement fully custom validation logic, you can disable the constraint validation by setting setManualValidation(boolean) to true. This will allow you to control the invalid state and the error message manually using HasValidationProperties.setInvalid(boolean) and setErrorMessage(String) API.

Author:
Vaadin Ltd.
See Also:

  • Nested Class Summary

    Nested Classes
    Modifier and Type
    Class
    Description
    static class 
    EmailField.EmailFieldI18n
    The internationalization properties for EmailField.

    Nested classes/interfaces inherited from class com.vaadin.flow.component.AbstractField

    com.vaadin.flow.component.AbstractField.ComponentValueChangeEvent<C extends com.vaadin.flow.component.Component,V extends Object>

    Nested classes/interfaces inherited from interface com.vaadin.flow.component.BlurNotifier

    com.vaadin.flow.component.BlurNotifier.BlurEvent<C extends com.vaadin.flow.component.Component>

    Nested classes/interfaces inherited from interface com.vaadin.flow.component.FocusNotifier

    com.vaadin.flow.component.FocusNotifier.FocusEvent<C extends com.vaadin.flow.component.Component>

    Nested classes/interfaces inherited from interface com.vaadin.flow.component.HasValue

    com.vaadin.flow.component.HasValue.ValueChangeEvent<V extends Object>, com.vaadin.flow.component.HasValue.ValueChangeListener<E extends com.vaadin.flow.component.HasValue.ValueChangeEvent<?>>

  • Field Summary

    Fields inherited from interface com.vaadin.flow.component.textfield.HasAutocapitalize

    AUTOCAPITALIZE_ATTRIBUTE

    Fields inherited from interface com.vaadin.flow.component.textfield.HasAutocomplete

    AUTOCOMPLETE_ATTRIBUTE

    Fields inherited from interface com.vaadin.flow.component.textfield.HasAutocorrect

    AUTOCORRECT_ATTRIBUTE

    Fields inherited from interface com.vaadin.flow.data.value.HasValueChangeMode

    DEFAULT_CHANGE_TIMEOUT

  • Constructor Summary

    Constructors
    Constructor
    Description
    EmailField()
    Constructs an empty EmailField.
    EmailField(com.vaadin.flow.component.HasValue.ValueChangeListener<? super com.vaadin.flow.component.AbstractField.ComponentValueChangeEvent<EmailField,String>> listener)
    Constructs an empty EmailField with a value change listener.
    EmailField(String label)
    Constructs an empty EmailField with the given label.
    EmailField(String label, com.vaadin.flow.component.HasValue.ValueChangeListener<? super com.vaadin.flow.component.AbstractField.ComponentValueChangeEvent<EmailField,String>> listener)
    Constructs an empty EmailField with a value change listener and a label.
    EmailField(String label, String placeholder)
    Constructs an empty EmailField with the given label and placeholder text.
    EmailField(String label, String initialValue, com.vaadin.flow.component.HasValue.ValueChangeListener<? super com.vaadin.flow.component.AbstractField.ComponentValueChangeEvent<EmailField,String>> listener)
    Constructs a EmailField with a value change listener, a label and an initial value.

  • Method Summary

    Modifier and Type
    Method
    Description
    com.vaadin.flow.data.binder.Validator<String>
    getDefaultValidator()
     
    String
    getEmptyValue()
     
    EmailField.EmailFieldI18n
    getI18n()
    Gets the internationalization object previously set for this component.
    int
    getMaxLength()
    Gets the maximum number of characters (in Unicode code points) that the user can enter.
    int
    getMinLength()
    Gets the minimum number of characters (in Unicode code points) that the user can enter.
    String
    getPattern()
    A regular expression that specifies a custom email format to use instead of the RFC 5322 standard format during validation.
    String
    getValue()
    Returns the current value of the email field.
    void
    setErrorMessage(String errorMessage)
    void
    setI18n(EmailField.EmailFieldI18n i18n)
    Sets the internationalization object for this component.
    void
    setManualValidation(boolean enabled)
     
    void
    setMaxLength(int maxLength)
    Sets the maximum number of characters (in Unicode code points) that the user can enter.
    void
    setMinLength(int minLength)
    Sets the minimum number of characters (in Unicode code points) that the user can enter.
    void
    setPattern(String pattern)
    Sets a regular expression that specifies a custom email format.
    void
    setRequiredIndicatorVisible(boolean required)
    Sets whether the user is required to provide a value.
    void
    setValue(String value)
    Sets the value of this email field.
    protected void
    validate()
    Validates the current value against the constraints and sets the invalid property and the errorMessage property based on the result.

    Methods inherited from class com.vaadin.flow.component.textfield.TextFieldBase

    addToInput, addToPrefix, addToSuffix, getAriaLabel, getAriaLabelledBy, getTitle, getValueChangeMode, getValueChangeTimeout, isAutofocus, isAutoselect, isRequired, isRequiredIndicatorVisible, setAriaLabel, setAriaLabelledBy, setAutofocus, setAutoselect, setLabel, setRequired, setTitle, setValueChangeMode, setValueChangeTimeout

    Methods inherited from class com.vaadin.flow.component.AbstractSinglePropertyField

    getSynchronizationRegistration, hasValidValue, setPresentationValue, setSynchronizedEvent

    Methods inherited from class com.vaadin.flow.component.AbstractField

    addValueChangeListener, isEmpty, setModelValue, valueEquals

    Methods inherited from class com.vaadin.flow.component.Component

    addListener, findAncestor, fireEvent, from, get, getChildren, getElement, getEventBus, getId, getListeners, getLocale, getParent, getTranslation, getTranslation, getTranslation, getTranslation, getTranslation, getTranslation, getUI, hasListener, isAttached, isTemplateMapped, isVisible, onAttach, onDetach, onEnabledStateChanged, removeFromParent, scrollIntoView, scrollIntoView, set, setElement, setId, setVisible

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    Methods inherited from interface com.vaadin.flow.component.AttachNotifier

    addAttachListener

    Methods inherited from interface com.vaadin.flow.component.BlurNotifier

    addBlurListener

    Methods inherited from interface com.vaadin.flow.component.CompositionNotifier

    addCompositionEndListener, addCompositionStartListener, addCompositionUpdateListener

    Methods inherited from interface com.vaadin.flow.component.DetachNotifier

    addDetachListener

    Methods inherited from interface com.vaadin.flow.component.Focusable

    addFocusShortcut, blur, focus, getTabIndex, setTabIndex

    Methods inherited from interface com.vaadin.flow.component.FocusNotifier

    addFocusListener

    Methods inherited from interface com.vaadin.flow.component.shared.HasAllowedCharPattern

    getAllowedCharPattern, setAllowedCharPattern

    Methods inherited from interface com.vaadin.flow.component.textfield.HasAutocapitalize

    getAutocapitalize, setAutocapitalize

    Methods inherited from interface com.vaadin.flow.component.textfield.HasAutocomplete

    getAutocomplete, setAutocomplete

    Methods inherited from interface com.vaadin.flow.component.textfield.HasAutocorrect

    isAutocorrect, setAutocorrect

    Methods inherited from interface com.vaadin.flow.component.shared.HasClearButton

    isClearButtonVisible, setClearButtonVisible

    Methods inherited from interface com.vaadin.flow.component.HasElement

    getElement

    Methods inherited from interface com.vaadin.flow.component.HasEnabled

    isEnabled, setEnabled

    Methods inherited from interface com.vaadin.flow.component.HasHelper

    getHelperComponent, getHelperText, setHelperComponent, setHelperText

    Methods inherited from interface com.vaadin.flow.component.HasLabel

    getLabel

    Methods inherited from interface com.vaadin.flow.component.HasPlaceholder

    getPlaceholder, setPlaceholder

    Methods inherited from interface com.vaadin.flow.component.shared.HasPrefix

    getPrefixComponent, setPrefixComponent

    Methods inherited from interface com.vaadin.flow.component.HasSize

    getHeight, getHeightUnit, getMaxHeight, getMaxWidth, getMinHeight, getMinWidth, getWidth, getWidthUnit, setHeight, setHeight, setHeightFull, setMaxHeight, setMaxHeight, setMaxWidth, setMaxWidth, setMinHeight, setMinHeight, setMinWidth, setMinWidth, setSizeFull, setSizeUndefined, setWidth, setWidth, setWidthFull

    Methods inherited from interface com.vaadin.flow.component.HasStyle

    addClassName, addClassNames, getClassName, getClassNames, getStyle, hasClassName, removeClassName, removeClassNames, setClassName, setClassName

    Methods inherited from interface com.vaadin.flow.component.shared.HasSuffix

    getSuffixComponent, setSuffixComponent

    Methods inherited from interface com.vaadin.flow.component.HasTheme

    addThemeName, addThemeNames, getThemeName, getThemeNames, hasThemeName, removeThemeName, removeThemeNames, setThemeName, setThemeName

    Methods inherited from interface com.vaadin.flow.component.shared.HasThemeVariant

    addThemeVariants, removeThemeVariants

    Methods inherited from interface com.vaadin.flow.component.shared.HasTooltip

    getTooltip, setTooltipText

    Methods inherited from interface com.vaadin.flow.component.shared.HasValidationProperties

    getErrorMessage, isInvalid, setInvalid

    Methods inherited from interface com.vaadin.flow.data.binder.HasValidator

    addValidationStatusChangeListener

    Methods inherited from interface com.vaadin.flow.component.HasValue

    addValueChangeListener, clear, getOptionalValue, isEmpty

    Methods inherited from interface com.vaadin.flow.component.HasValueAndElement

    isReadOnly, setReadOnly

    Methods inherited from interface com.vaadin.flow.component.InputNotifier

    addInputListener

    Methods inherited from interface com.vaadin.flow.component.KeyNotifier

    addKeyDownListener, addKeyDownListener, addKeyPressListener, addKeyPressListener, addKeyUpListener, addKeyUpListener

  • Constructor Details

    • EmailField

      public EmailField()
      Constructs an empty EmailField.

    • EmailField

      public EmailField(String label)
      Constructs an empty EmailField with the given label.
      Parameters:
      label - the text to set as the label

    • EmailField

      public EmailField(String label, String placeholder)
      Constructs an empty EmailField with the given label and placeholder text.
      Parameters:
      label - the text to set as the label
      placeholder - the placeholder text to set

    • EmailField

      public EmailField(com.vaadin.flow.component.HasValue.ValueChangeListener<? super com.vaadin.flow.component.AbstractField.ComponentValueChangeEvent<EmailField,String>> listener)
      Constructs an empty EmailField with a value change listener.
      Parameters:
      listener - the value change listener
      See Also:
      • AbstractField.addValueChangeListener(com.vaadin.flow.component.HasValue.ValueChangeListener)

    • EmailField

      public EmailField(String label, com.vaadin.flow.component.HasValue.ValueChangeListener<? super com.vaadin.flow.component.AbstractField.ComponentValueChangeEvent<EmailField,String>> listener)
      Constructs an empty EmailField with a value change listener and a label.
      Parameters:
      label - the text to set as the label
      listener - the value change listener
      See Also:

    • EmailField

      public EmailField(String label, String initialValue, com.vaadin.flow.component.HasValue.ValueChangeListener<? super com.vaadin.flow.component.AbstractField.ComponentValueChangeEvent<EmailField,String>> listener)
      Constructs a EmailField with a value change listener, a label and an initial value.
      Parameters:
      label - the text to set as the label
      initialValue - the initial value
      listener - the value change listener
      See Also:
      • TextFieldBase.setLabel(String)
      • AbstractField.setValue(Object)
      • AbstractField.addValueChangeListener(com.vaadin.flow.component.HasValue.ValueChangeListener)

  • Method Details

    • setErrorMessage

      public void setErrorMessage(String errorMessage)

      Distinct error messages for email format and different constraints can be configured with the EmailField.EmailFieldI18n object, using the respective properties. However, note that the error message set with setErrorMessage(String) will take priority and override any i18n error messages if both are set.

      Specified by:
      setErrorMessage in interface com.vaadin.flow.component.HasValidation
      Specified by:
      setErrorMessage in interface HasValidationProperties

    • setRequiredIndicatorVisible

      public void setRequiredIndicatorVisible(boolean required)
      Description copied from class: TextFieldBase
      Sets whether the user is required to provide a value. When required, an indicator appears next to the label and the field invalidates if the value is cleared.

      NOTE: The required indicator is only visible when the field has a label, see TextFieldBase.setLabel(String).

      Specified by:
      setRequiredIndicatorVisible in interface com.vaadin.flow.component.HasValue<com.vaadin.flow.component.AbstractField.ComponentValueChangeEvent<EmailField,String>,String>
      Specified by:
      setRequiredIndicatorVisible in interface com.vaadin.flow.component.HasValueAndElement<com.vaadin.flow.component.AbstractField.ComponentValueChangeEvent<EmailField,String>,String>
      Overrides:
      setRequiredIndicatorVisible in class TextFieldBase<EmailField,String>
      Parameters:
      required - true to make the field required, false otherwise
      See Also:

    • setMaxLength

      public void setMaxLength(int maxLength)
      Sets the maximum number of characters (in Unicode code points) that the user can enter. Emails with a length exceeding this limit will cause the component to invalidate.

      The maximum length is inclusive.

      Parameters:
      maxLength - the maximum length
      See Also:

    • getMaxLength

      public int getMaxLength()
      Gets the maximum number of characters (in Unicode code points) that the user can enter.
      Returns:
      the maximum length
      See Also:

    • setMinLength

      public void setMinLength(int minLength)
      Sets the minimum number of characters (in Unicode code points) that the user can enter. Emails with a length shorter than this limit will cause the component to invalidate.

      The minimum length is inclusive.

      Parameters:
      minLength - the minimum length
      See Also:

    • getMinLength

      public int getMinLength()
      Gets the minimum number of characters (in Unicode code points) that the user can enter.
      Returns:
      the minimum length
      See Also:

    • setPattern

      public void setPattern(String pattern)
      Sets a regular expression that specifies a custom email format. This will override the RFC 5322 standard format, which is used by default during validation. Emails that do not match the pattern will cause the component to invalidate.

      The pattern must be a valid JavaScript Regular Expression that matches the entire value, not just some subset.

      Parameters:
      pattern - the custom format pattern
      See Also:

    • getPattern

      public String getPattern()
      A regular expression that specifies a custom email format to use instead of the RFC 5322 standard format during validation.
      Returns:
      the custom format pattern
      See Also:

    • getEmptyValue

      public String getEmptyValue()
      Specified by:
      getEmptyValue in interface com.vaadin.flow.component.HasValue<com.vaadin.flow.component.AbstractField.ComponentValueChangeEvent<EmailField,String>,String>
      Overrides:
      getEmptyValue in class com.vaadin.flow.component.AbstractField<EmailField,String>

    • setValue

      public void setValue(String value)
      Sets the value of this email field. If the new value is not equal to getValue(), fires a value change event. Throws NullPointerException, if the value is null.

      Note: Binder will take care of the null conversion when integrates with email field, as long as no new converter is defined.

      Specified by:
      setValue in interface com.vaadin.flow.component.HasValue<com.vaadin.flow.component.AbstractField.ComponentValueChangeEvent<EmailField,String>,String>
      Overrides:
      setValue in class com.vaadin.flow.component.AbstractField<EmailField,String>
      Parameters:
      value - the new value, not null

    • getValue

      public String getValue()
      Returns the current value of the email field. By default, the empty email field will return an empty string.
      Specified by:
      getValue in interface com.vaadin.flow.component.HasValue<com.vaadin.flow.component.AbstractField.ComponentValueChangeEvent<EmailField,String>,String>
      Overrides:
      getValue in class com.vaadin.flow.component.AbstractField<EmailField,String>
      Returns:
      the current value.

    • getDefaultValidator

      public com.vaadin.flow.data.binder.Validator<String> getDefaultValidator()
      Specified by:
      getDefaultValidator in interface com.vaadin.flow.data.binder.HasValidator<String>

    • setManualValidation

      public void setManualValidation(boolean enabled)
      Specified by:
      setManualValidation in interface com.vaadin.flow.component.HasValidation

    • validate

      protected void validate()
      Validates the current value against the constraints and sets the invalid property and the errorMessage property based on the result. If a custom error message is provided with setErrorMessage(String), it is used. Otherwise, the error message defined in the i18n object is used.

      The method does nothing if the manual validation mode is enabled.

    • getI18n

      public EmailField.EmailFieldI18n getI18n()
      Gets the internationalization object previously set for this component.

      NOTE: Updating the instance that is returned from this method will not update the component if not set again using setI18n(EmailFieldI18n)

      Returns:
      the i18n object or null if no i18n object has been set

    • setI18n

      public void setI18n(EmailField.EmailFieldI18n i18n)
      Sets the internationalization object for this component.
      Parameters:
      i18n - the i18n object, not null