meetup-web-mocks/node_modules/history/lib/BrowserProtocol.js

Meetup Web Mocks

'use strict';

exports.__esModule = true;
exports.go = exports.replaceLocation = exports.pushLocation = exports.startListener = exports.getUserConfirmation = exports.getCurrentLocation = undefined;

var _LocationUtils = require('./LocationUtils');

var _DOMUtils = require('./DOMUtils');

var _DOMStateStorage = require('./DOMStateStorage');

var _PathUtils = require('./PathUtils');

var _ExecutionEnvironment = require('./ExecutionEnvironment');

var PopStateEvent = 'popstate';
var HashChangeEvent = 'hashchange';

var needsHashchangeListener = _ExecutionEnvironment.canUseDOM && !(0, _DOMUtils.supportsPopstateOnHashchange)();

var _createLocation = function _createLocation(historyState) {
  var key = historyState && historyState.key;

  return (0, _LocationUtils.createLocation)({
    pathname: window.location.pathname,
    search: window.location.search,
    hash: window.location.hash,
    state: key ? (0, _DOMStateStorage.readState)(key) : undefined
  }, undefined, key);
};

var getCurrentLocation = exports.getCurrentLocation = function getCurrentLocation() {
  var historyState = void 0;
  try {
    historyState = window.history.state || {};
  } catch (error) {
    // IE 11 sometimes throws when accessing window.history.state
    // See https://github.com/ReactTraining/history/pull/289
    historyState = {};
  }

  return _createLocation(historyState);
};

var getUserConfirmation = exports.getUserConfirmation = function getUserConfirmation(message, callback) {
  return callback(window.confirm(message));
}; // eslint-disable-line no-alert

var startListener = exports.startListener = function startListener(listener) {
  var handlePopState = function handlePopState(event) {
    if (event.state !== undefined) // Ignore extraneous popstate events in WebKit
      listener(_createLocation(event.state));
  };

  (0, _DOMUtils.addEventListener)(window, PopStateEvent, handlePopState);

  var handleUnpoppedHashChange = function handleUnpoppedHashChange() {
    return listener(getCurrentLocation());
  };

  if (needsHashchangeListener) {
    (0, _DOMUtils.addEventListener)(window, HashChangeEvent, handleUnpoppedHashChange);
  }

  return function () {
    (0, _DOMUtils.removeEventListener)(window, PopStateEvent, handlePopState);

    if (needsHashchangeListener) {
      (0, _DOMUtils.removeEventListener)(window, HashChangeEvent, handleUnpoppedHashChange);
    }
  };
};

var updateLocation = function updateLocation(location, updateState) {
  var state = location.state;
  var key = location.key;


  if (state !== undefined) (0, _DOMStateStorage.saveState)(key, state);

  updateState({ key: key }, (0, _PathUtils.createPath)(location));
};

var pushLocation = exports.pushLocation = function pushLocation(location) {
  return updateLocation(location, function (state, path) {
    return window.history.pushState(state, null, path);
  });
};

var replaceLocation = exports.replaceLocation = function replaceLocation(location) {
  return updateLocation(location, function (state, path) {
    return window.history.replaceState(state, null, path);
  });
};

var go = exports.go = function go(n) {
  if (n) window.history.go(n);
};