Prevent arrow keys changing page when button elements are focused

[foster999]

Subject: Change document event listener, so that arrow keys can be used to access tabbed content

Feature or Bugfix

• Bugfix

Purpose

• Left and right arrow key presses trigger sphinx docs to switch the previous or next page, respectively. Left and right arrow keys may be required for keyboard-only users to access content within a page. For example, where button elements are used to switch between tabbed content. This minor change prevents the arrow keys from triggering a page change when the active element is a button, as in the case of accessible tabs. This allows users to switch accessible tabbed content using only a keyboard.

Detail

• Bug - accessible tabs cannot be accessed by keyboard-only users.

Relates

• Supports accessibility improvements to tabbed content in sphinx extensions.

[tk0miya]

Thank you for your contribution!