@atlaskit/editor-plugin-interactivity/dist/cjs/collector/lifecycle-observer.js

Interactivity plugin for @atlaskit/editor-core

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.LifecycleObserver = void 0;
var _classCallCheck2 = _interopRequireDefault(require("@babel/runtime/helpers/classCallCheck"));
var _createClass2 = _interopRequireDefault(require("@babel/runtime/helpers/createClass"));
var _bindEventListener = require("bind-event-listener");
var _browserApis = require("@atlaskit/browser-apis");
/**
 * Reports the page lifecycle signals that force an extra snapshot: the tab being hidden or
 * shown again, and the page being unloaded or restored from the back/forward cache.
 *
 * None of them is guaranteed to arrive — a mobile browser being killed raises nothing at all.
 * Snapshots carry session-to-date values, so losing the last one costs only the tail of that
 * session.
 */
var LifecycleObserver = exports.LifecycleObserver = /*#__PURE__*/function () {
  function LifecycleObserver(handlers) {
    (0, _classCallCheck2.default)(this, LifecycleObserver);
    this.handlers = handlers;
  }
  return (0, _createClass2.default)(LifecycleObserver, [{
    key: "start",
    value: function start() {
      var _this = this;
      var doc = (0, _browserApis.getDocument)();
      var unbindVisibilityChange = doc ? (0, _bindEventListener.bind)(doc, {
        type: 'visibilitychange',
        listener: function listener() {
          if (doc.visibilityState === 'hidden') {
            _this.handlers.onHidden();
          } else {
            _this.handlers.onVisible();
          }
        }
      }) : undefined;
      var unbindPageHide = (0, _bindEventListener.bind)(window, {
        type: 'pagehide',
        listener: function listener() {
          return _this.handlers.onPageHide();
        }
      });
      var unbindPageShow = (0, _bindEventListener.bind)(window, {
        type: 'pageshow',
        listener: function listener() {
          return _this.handlers.onPageShow();
        }
      });
      this.unbind = function () {
        unbindVisibilityChange === null || unbindVisibilityChange === void 0 || unbindVisibilityChange();
        unbindPageHide();
        unbindPageShow();
      };
    }
  }, {
    key: "stop",
    value: function stop() {
      var _this$unbind;
      (_this$unbind = this.unbind) === null || _this$unbind === void 0 || _this$unbind.call(this);
      this.unbind = undefined;
    }
  }]);
}();