Package com.vaadin.flow.component.timepicker

Class TimePicker

java.lang.Object
com.vaadin.flow.component.Component
com.vaadin.flow.component.AbstractField<C,T>
com.vaadin.flow.component.AbstractSinglePropertyField<TimePicker,LocalTime>
com.vaadin.flow.component.timepicker.TimePicker
All Implemented Interfaces:
AttachNotifier, BlurNotifier<TimePicker>, DetachNotifier, Focusable<TimePicker>, FocusNotifier<TimePicker>, HasAriaLabel, HasElement, HasEnabled, HasHelper, HasLabel, HasSize, HasStyle, HasTheme, HasValidation, HasValue<AbstractField.ComponentValueChangeEvent<TimePicker,LocalTime>,LocalTime>, HasValueAndElement<AbstractField.ComponentValueChangeEvent<TimePicker,LocalTime>,LocalTime>, HasAllowedCharPattern, HasAutoOpen, HasClearButton, HasClientValidation, HasOverlayClassName, HasPrefix, HasThemeVariant<TimePickerVariant>, HasTooltip, HasValidationProperties, HasValidator<LocalTime>, Serializable
@Tag("vaadin-time-picker") @NpmPackage(value="@vaadin/polymer-legacy-adapter",version="24.1.6") @NpmPackage(value="@vaadin/time-picker",version="24.1.6") @JsModule("@vaadin/polymer-legacy-adapter/style-modules.js") @JsModule("@vaadin/time-picker/src/vaadin-time-picker.js") @JsModule("./vaadin-time-picker/timepickerConnector.js") public class TimePicker extends AbstractSinglePropertyField<TimePicker,LocalTime> implements Focusable<TimePicker>, HasAllowedCharPattern, HasAriaLabel, HasAutoOpen, HasClearButton, HasClientValidation, HasHelper, HasLabel, HasPrefix, HasOverlayClassName, HasSize, HasStyle, HasTooltip, HasThemeVariant<TimePickerVariant>, HasValidationProperties, HasValidator<LocalTime>
Time Picker is an input field for entering or selecting a specific time. The time can be entered directly using a keyboard or by choosing a value from a set of predefined options presented in an overlay. The overlay opens when the field is clicked or any input is entered when the field is focused.
Author:
Vaadin Ltd
See Also:

  • Constructor Details

  • Method Details

    • setLabel

      public void setLabel(String label)
      Sets the label for the time picker.
      Specified by:
      setLabel in interface HasLabel
      Parameters:
      label - value for the label property in the time picker

    • setValue

      public void setValue(LocalTime value)
      Sets the selected time value of the component. The value can be cleared by setting null.

      The value will be truncated to millisecond precision, as that is the maximum that the time picker supports. This means that AbstractField.getValue() might return a different value than what was passed in.

      Specified by:
      setValue in interface HasValue<AbstractField.ComponentValueChangeEvent<TimePicker,LocalTime>,LocalTime>
      Overrides:
      setValue in class AbstractField<TimePicker,LocalTime>
      Parameters:
      value - the LocalTime instance representing the selected time, or null

    • getLabel

      public String getLabel()
      Gets the label of the time picker.
      Specified by:
      getLabel in interface HasLabel
      Returns:
      the label property of the time picker

    • setAriaLabel

      public void setAriaLabel(String ariaLabel)
      Description copied from interface: HasAriaLabel
      Set the aria-label of the component to the given text.

      This method should not be used if HasAriaLabel.setAriaLabelledBy(String) is also used. If both attributes are present, aria-labelledby will take precedence over aria-label.

      Specified by:
      setAriaLabel in interface HasAriaLabel
      Parameters:
      ariaLabel - the aria-label text to set or null to clear

    • getAriaLabel

      public Optional<String> getAriaLabel()
      Description copied from interface: HasAriaLabel
      Gets the aria-label of the component.
      Specified by:
      getAriaLabel in interface HasAriaLabel
      Returns:
      an optional aria-label of the component if no aria-label has been set

    • setAriaLabelledBy

      public void setAriaLabelledBy(String labelledBy)
      Description copied from interface: HasAriaLabel
      Set the aria-labelledby of the component. The value must be a valid id attribute of another element that labels the component. The label element must be in the same DOM scope of the component, otherwise screen readers may fail to announce the label content properly.

      This method should not be used if HasAriaLabel.setAriaLabel(String) is also used. If both attributes are present, aria-labelledby will take precedence over aria-label.

      Specified by:
      setAriaLabelledBy in interface HasAriaLabel
      Parameters:
      labelledBy - the string with the id of the element that will be used as label or null to clear

    • getAriaLabelledBy

      public Optional<String> getAriaLabelledBy()
      Description copied from interface: HasAriaLabel
      Gets the aria-labelledby of the component
      Specified by:
      getAriaLabelledBy in interface HasAriaLabel
      Returns:
      an optional aria-labelledby of the component if no aria-labelledby has been set

    • getDefaultValidator

      public Validator<LocalTime> getDefaultValidator()
      Description copied from interface: HasValidator
      Returns a validator that checks the state of the Value. This should be overridden for components with internal value conversion or validation, e.g. when the user is providing a string that has to be parsed into a date. An invalid input from user will be exposed to a Binder and can be seen as a validation failure.
      Specified by:
      getDefaultValidator in interface HasValidator<LocalTime>
      Returns:
      state validator

    • addValidationStatusChangeListener

      public Registration addValidationStatusChangeListener(ValidationStatusChangeListener<LocalTime> listener)
      Description copied from interface: HasValidator
      Enables the implementing components to notify changes in their validation status to the observers.

      Note: This method can be overridden by the implementing classes e.g. components, to enable the associated Binder.Binding instance subscribing for their validation change events and revalidate itself.

      This method primarily designed for notifying the Binding about the validation status changes of a bound component at the client-side. WebComponents such as <vaadin-date-picker> or any other component that accept a formatted text as input should be able to communicate their invalid status to their server-side instance, and a bound server-side component instance must notify its binding about this validation status change as well. When the binding instance revalidates, a chain of validators and convertors get executed one of which is the default validator provided by HasValidator.getDefaultValidator(). Thus, In order for the binding to be able to show/clear errors for its associated bound field, it is important that implementing components take that validation status into account while implementing any validator and converter including HasValidator.getDefaultValidator(). Here is an example: 

       @Tag("date-picker-demo")
 public class DatePickerDemo implements HasValidator<LocalDate> {

     // Each web component has a way to communicate its validation status
     // to its server-side component instance. The following clientSideValid
     // state is introduced here just for the sake of simplicity of this code
     // snippet:
     boolean clientSideValid = true;

     /**
      * Note how clientSideValid engaged in the definition
      * of this method. It is important to reflect this status either
      * in the returning validation result of this method or any other
      * validation that is associated with this component.
      */
     @Override
     public Validator getDefaultValidator() {
          return (value, valueContext) -> clientSideValid ? ValidationResult.ok()
                 : ValidationResult.error("Invalid date format");
     }

     private final Collection<ValidationStatusChangeListener<LocalDate>>
         validationStatusListeners = new ArrayList<>();

     /**
      * This enables the binding to subscribe for the validation status
      * change events that are fired by this component and revalidate
      * itself respectively.
      */
     @Override
     public Registration addValidationStatusChangeListener(
             ValidationStatusChangeListener<LocalDate> listener) {
         validationStatusListeners.add(listener);
         return () -> validationStatusListeners.remove(listener);
     }

     private void fireValidationStatusChangeEvent(
             boolean newValidationStatus) {
         if (this.clientSideValid != newValidationStatus) {
             this.clientSideValid = newValidationStatus;
             var event = new ValidationStatusChangeEvent<>(this,
                     newValidationStatus);
             validationStatusListeners.forEach(
                     listener -> listener.validationStatusChanged(event));
         }
     }
 }
      Specified by:
      addValidationStatusChangeListener in interface HasValidator<LocalTime>
      Returns:
      Registration of the added listener.
      See Also:

    • isInputValuePresent

      @Synchronize(property="_hasInputValue", value="has-input-value-changed") protected boolean isInputValuePresent()
      Returns whether the input element has a value or not.
      Returns:
      true if the input element's value is populated, false otherwise

    • setPlaceholder

      public void setPlaceholder(String placeholder)
      Sets the placeholder text that should be displayed in the input element, when the user has not entered a value.
      Parameters:
      placeholder - the placeholder text

    • getPlaceholder

      public String getPlaceholder()
      The placeholder text that should be displayed in the input element, when the user has not entered a value.
      Returns:
      the placeholder property of the time picker

    • setRequired

      public void setRequired(boolean required)
      Sets whether the time picker is marked as input required.
      Parameters:
      required - the boolean value to set

    • setRequiredIndicatorVisible

      public void setRequiredIndicatorVisible(boolean requiredIndicatorVisible)
      Description copied from interface: HasValue
      Sets the required indicator visible or not.

      If set visible, it is visually indicated in the user interface.

      The method is intended to be used with Binder which does server-side validation. In case HTML element has its own (client-side) validation it should be disabled when setRequiredIndicatorVisible(true) is called and re-enabled back on setRequiredIndicatorVisible(false). It's responsibility of each component implementation to follow the contract so that the method call doesn't do anything else than show/hide the "required" indication. Usually components provide their own setRequired method which should be called in case the client-side validation is required.

      Specified by:
      setRequiredIndicatorVisible in interface HasValue<AbstractField.ComponentValueChangeEvent<TimePicker,LocalTime>,LocalTime>
      Specified by:
      setRequiredIndicatorVisible in interface HasValueAndElement<AbstractField.ComponentValueChangeEvent<TimePicker,LocalTime>,LocalTime>
      Parameters:
      requiredIndicatorVisible - true to make the required indicator visible, false if not

    • isRequired

      public boolean isRequired()
      Determines whether the time picker is marked as input required.

      This property is not synchronized automatically from the client side, so the returned value may not be the same as in client side.

      Returns:
      true if the input is required, false otherwise

    • setStep

      public void setStep(Duration step)
      Sets the step property of the time picker using duration. It specifies the intervals for the displayed items in the time picker dropdown and also the displayed time format.

      The set step needs to evenly divide a day or an hour and has to be larger than 0 milliseconds. By default, the format is hh:mm (same as * Duration.ofHours(1)

      If the step is less than 60 seconds, the format will be changed to hh:mm:ss and it can be in hh:mm:ss.fff format, when the step is less than 1 second.

      NOTE: If the step is less than 900 seconds, the dropdown is hidden.

      NOTE: changing the step to a larger duration can cause a new HasValue.ValueChangeEvent to be fired if some parts (eg. seconds) is discarded from the value.

      Parameters:
      step - the step to set, not null and should divide a day or an hour evenly

    • getStep

      public Duration getStep()
      Gets the step of the time picker.

      This property is not synchronized automatically from the client side, so the returned value may not be the same as in client side.

      Returns:
      the step property from the picker, unit seconds

    • addInvalidChangeListener

      public Registration addInvalidChangeListener(ComponentEventListener<TimePicker.InvalidChangeEvent> listener)
      Adds a listener for invalid-changed events fired by the webcomponent.
      Parameters:
      listener - the listener
      Returns:
      a Registration for removing the event listener

    • validate

      protected void validate()
      Performs server-side validation of the current value. This is needed because it is possible to circumvent the client-side validation constraints using browser development tools.

    • onAttach

      protected void onAttach(AttachEvent attachEvent)
      Description copied from class: Component
      Called when the component is attached to a UI.

      The default implementation does nothing.

      This method is invoked before the AttachEvent is fired for the component.

      Overrides:
      onAttach in class Component
      Parameters:
      attachEvent - the attach event

    • setLocale

      public void setLocale(Locale locale)
      Set the Locale for the Time Picker. The displayed time will be formatted by the browser using the given locale.

      By default, the locale is null until the component is attached to an UI, and then locale is set to UI.getLocale(), unless a locale has been explicitly set before that.

      The time formatting is done in the browser using the Date.toLocaleTimeString() function.

      If for some reason the browser doesn't support the given locale, the en-US locale is used.

      NOTE: only the language + country/region codes are used. This means that the script and variant information is not used and supported. NOTE: timezone related data is not supported. NOTE: changing the locale does not cause a new HasValue.ValueChangeEvent to be fired.

      Parameters:
      locale - the locale set to the time picker, cannot be [@code null}

    • getLocale

      public Locale getLocale()
      Gets the Locale for this time picker.

      By default, the locale is null until the component is attached to an UI, and then locale is set to UI.getLocale(), unless setLocale(Locale) has been explicitly called before that.

      Overrides:
      getLocale in class Component
      Returns:
      the locale used for this time picker

    • setMin

      public void setMin(LocalTime min)
      Sets the minimum time in the time picker. Times before that will be disabled in the popup.
      Parameters:
      min - the minimum time that is allowed to be selected, or null to remove any minimum constraints

    • getMin

      public LocalTime getMin()
      Gets the minimum time in the time picker. Time before that will be disabled in the popup.
      Returns:
      the minimum time that is allowed to be selected, or null if there's no minimum

    • setMax

      public void setMax(LocalTime max)
      Sets the maximum time in the time picker. Times after that will be disabled in the popup.
      Parameters:
      max - the maximum time that is allowed to be selected, or null to remove any maximum constraints

    • getMax

      public LocalTime getMax()
      Gets the maximum time in the time picker. Times after that will be disabled in the popup.
      Returns:
      the maximum time that is allowed to be selected, or null if there's no maximum

    • getSupportedAvailableLocales

      public static Stream<Locale> getSupportedAvailableLocales()
      Returns a stream of all the available locales that are supported by the time picker component.

      This is a shorthand for Locale.getAvailableLocales() where all locales without the Locale.getLanguage() have been filtered out, as the browser cannot localize the time for those.

      Returns:
      a stream of the available locales that are supported by the time picker component
      See Also: