blob: 44608c2bceaa1eb6a2b8c5113a04b7ec266d2403 (
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var keyboardNavigation = false,
keyboardNavigationKeycodes = [ 9, 32, 37, 38, 39, 40 ]; // keyCodes for tab, space, left, up, right, down respectively
document.addEventListener( 'keydown', function( event ) {
if ( keyboardNavigation ) {
return;
}
if ( keyboardNavigationKeycodes.indexOf( event.keyCode ) !== -1 ) {
keyboardNavigation = true;
document.documentElement.classList.add( 'accessible-focus' );
}
} );
document.addEventListener( 'mouseup', function() {
if ( ! keyboardNavigation ) {
return;
}
keyboardNavigation = false;
document.documentElement.classList.remove( 'accessible-focus' );
} );
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