react-tray/lib/helpers/focusManager.js

An accessible tray component useful for navigation menus

'use strict';

var focusLaterElement = null;

exports.markForFocusLater = function markForFocusLater() {
  focusLaterElement = document.activeElement;
};

exports.returnFocus = function returnFocus() {
  try {
    focusLaterElement.focus();
  } catch (e) {
    /* eslint no-console:0 */
    console.warn('You tried to return focus to ' + focusLaterElement + ' but it is not in the DOM anymore');
  }
  focusLaterElement = null;
};