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

Interactivity plugin for @atlaskit/editor-core

import _classCallCheck from "@babel/runtime/helpers/classCallCheck";
import _createClass from "@babel/runtime/helpers/createClass";
import { bind } from 'bind-event-listener';
import { getDocument } from '@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.
 */
export var LifecycleObserver = /*#__PURE__*/function () {
  function LifecycleObserver(handlers) {
    _classCallCheck(this, LifecycleObserver);
    this.handlers = handlers;
  }
  return _createClass(LifecycleObserver, [{
    key: "start",
    value: function start() {
      var _this = this;
      var doc = getDocument();
      var unbindVisibilityChange = doc ? bind(doc, {
        type: 'visibilitychange',
        listener: function listener() {
          if (doc.visibilityState === 'hidden') {
            _this.handlers.onHidden();
          } else {
            _this.handlers.onVisible();
          }
        }
      }) : undefined;
      var unbindPageHide = bind(window, {
        type: 'pagehide',
        listener: function listener() {
          return _this.handlers.onPageHide();
        }
      });
      var unbindPageShow = 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;
    }
  }]);
}();