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ASP.NET Core DropDownTree Keyboard Navigation

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HtmlHelper
TagHelper
Files:
keyboard_navigation.cshtml
Keyboard_Navigation_TagHelper.cshtml

Also available for:

CLIENT-SIDE API SERVER-SIDE API

Description

Keyboard navigation provides all web and app users with a fast keyboard-only navigation capability and is also part of the web accessibility features–it enables users with disabilities to fully control their website or app access through the keyboard.

By default, users can only navigate to links, buttons, and form controls with a keyboard. The navigation order in which interactive items receive keyboard focus has to be logical and intuitive. Generally, keyboard navigation logic needs to follow the visual horizontal and vertical flow of the page, for example, left to right and top to bottom, header first followed by the main and then the page navigation.

The keyboard navigation of the Telerik UI for ASP.NET Core DropDownTree is always available as demonstrated in this demo.

The DropDownTree supports the following keyboard shortcuts:

Focus

  • Alt + W Focuses the component.

Closed Popup

  • Left Arrow Highlights the previously selected item.
  • Right Arrow Highlights the next selected item.
  • Home Highlights the first selected item.
  • End Highlights the last selected item.
  • Delete Deletes the highlighted item.
  • Backspace Deletes the highlighted item or the last item.
  • Alt + Down Arrow Opens the popup.
  • Esc Clears all items.

Opened Popup

  • Up Arrow Highlights the previous item.
  • Down Arrow Highlights the next item.
  • Home Highlights the first item in the popup.
  • End Highlights the last item in the popup.
  • Esc Closes the popup.
  • Alt + Up Arrow Closes the popup.

TreeView Navigation

  • Up Arrow Highlights the previous item.
  • Left Arrow Collapses the item.
  • Down Arrow Highlights the next item.
  • Right Arrow Expands the item.
  • Home Highlights the first item in the list.
  • End Highlights the last item in the list.
  • Enter Selects the highlighted item when there are no checkboxes.
  • Space Checks the highlighted item when there are checkboxes.

Additional Apps

This DropDownTree example is part of unique collection of hundreds of ASP.NET Core demos, with which you can see all Telerik ASP.NET Core components and their features in action. View the source code of the demos from the library or directly adapt, and edit them and their theme appearance in Telerik REPL for ASP.NET Core or ThemeBuilder.

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