Accessibility in Blazor Datetime Picker Component

7 Aug 20235 minutes to read

The web accessibility defines a way to make web content and web applications more accessible to disabled people. It especially helps the dynamic content change and advanced user interface components developed with Ajax, HTML, JavaScript, and related technologies.

DateTimePicker provides built-in compliance with the WAI-ARIA specifications. WAI-ARIA support is achieved through the attributes like aria-expanded, aria-disabled, aria-activedescendant applied to the input element.

To learn about the accessibility of Calendar, refer to the Calendar’s Accessibility section.

It helps to provide information about the widget for assistive technology to the disabled person in screen reader.

• aria-expanded: Attribute indicates the state of a collapsible element.

• aria-disabled: Attribute indicates the disabled state of this DateTimePicker component.

• aria-activedescendent: Attribute helps in managing the current active child of the DateTimePicker component.

Keyboard interaction

You can use the following keys to interact with the DateTimePicker. The component implements the keyboard navigation support by following the WAI-ARIA practices.

DateTimePicker supports the below list of shortcut keys:

Input navigation

Before opening the popup, use the following keys to control the popup element.

Keys	Description
Alt + Down Arrow	Opens the select popup
Alt + Down Arrow + Alt + Down Arrow	Toggles between two popups

Calendar navigation

Use the following keys to interact with the Calendar after the DatePicker popup has opened:

Keys	Description
Upper Arrow	Focuses the previous week date.
Down Arrow	Focuses the next week date.
Left Arrow	Focuses the previous date.
Right Arrow	Focuses the next date.
Home	Focuses the first date in the month.
End	Focuses the last date in the month.
Page Up	Focuses the same date in the previous month.
Page Down	Focuses the same date in the next month.
Enter	Selects the currently focused date.
Shift + Page Up	Focuses the same date in the previous year.
Shift + Page Down	Focuses the same date in the previous year.
Control + Upper Arrow	Moves into the inner level of view like month-year, year-decade
Control + Down Arrow	Moves out from the depth level view like decade-year, year-month
Control +Home	Focuses the starting date in the current year.
Control +End	Focuses the ending date in the current year.

Use the following shortcut keys to interact with the TimePicker after the TimePicker Popup has opened:

Keys	Description
Upper Arrow	Navigates and selects the previous item.
Down Arrow	Navigates and selects the next item.
Left Arrow	Moves the cursor towards arrow key pressed direction.
Right Arrow	Moves the cursor towards arrow key pressed direction.
Home	Navigates and selects the first item.
End	Navigates and selects the last item.
Enter	Selects the currently focused item and close the popup.
Alt + Upper Arrow	Closes the popup.
Alt + Down Arrow	Opens the popup.
Esc	Closes the popup.

NOTE

To focus out the DateTimePicker component, use the t keys. For additional information about native event, click here.

@using Syncfusion.Blazor.Calendars

<SfDateTimePicker TValue="DateTime?" @onkeypress="@(e => KeyPressed(e))" @ref="DateTimeObj"></SfDateTimePicker>

@code {
    public SfDateTimePicker<DateTime?> DateTimeObj;
    public void KeyPressed(KeyboardEventArgs args)
    {
        if (args.Key == "t")
        {
            this.DateTimeObj.FocusOutAsync();
        }
    }
}