/* Переключение вкладок на странице карты. */
(function () {
  'use strict';
  var tabs = Array.prototype.slice.call(document.querySelectorAll('[data-map-tab]'));
  if (!tabs.length) return;
  var panes = {
    live: document.getElementById('pane-live'),
    scheme: document.getElementById('pane-scheme')
  };

  function select(key) {
    tabs.forEach(function (t) {
      var on = t.getAttribute('data-map-tab') === key;
      t.classList.toggle('on', on);
      t.setAttribute('aria-selected', on ? 'true' : 'false');
    });
    Object.keys(panes).forEach(function (k) {
      if (panes[k]) panes[k].hidden = (k !== key);
    });
    try {
      if (history.replaceState) history.replaceState(null, '', '#' + key);
    } catch (e) {}
  }

  tabs.forEach(function (t) {
    t.addEventListener('click', function () { select(t.getAttribute('data-map-tab')); });
  });

  if (location.hash === '#scheme') select('scheme');
})();