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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.PostmessageTransport = void 0;
var _events = require("events");
var _ = require("..");
function _typeof(obj) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (obj) { return typeof obj; } : function (obj) { return obj && "function" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }, _typeof(obj); }
function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); enumerableOnly && (symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; })), keys.push.apply(keys, symbols); } return keys; }
function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = null != arguments[i] ? arguments[i] : {}; i % 2 ? ownKeys(Object(source), !0).forEach(function (key) { _defineProperty(target, key, source[key]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)) : ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } return target; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, _toPropertyKey(descriptor.key), descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); Object.defineProperty(Constructor, "prototype", { writable: false }); return Constructor; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); Object.defineProperty(subClass, "prototype", { writable: false }); if (superClass) _setPrototypeOf(subClass, superClass); }
function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf ? Object.setPrototypeOf.bind() : function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } else if (call !== void 0) { throw new TypeError("Derived constructors may only return object or undefined"); } return _assertThisInitialized(self); }
function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }
function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf.bind() : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
function _defineProperty(obj, key, value) { key = _toPropertyKey(key); if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
function _toPropertyKey(arg) { var key = _toPrimitive(arg, "string"); return _typeof(key) === "symbol" ? key : String(key); }
function _toPrimitive(input, hint) { if (_typeof(input) !== "object" || input === null) return input; var prim = input[Symbol.toPrimitive]; if (prim !== undefined) { var res = prim.call(input, hint || "default"); if (_typeof(res) !== "object") return res; throw new TypeError("@@toPrimitive must return a primitive value."); } return (hint === "string" ? String : Number)(input); } /*
* Copyright 2020 The Matrix.org Foundation C.I.C.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* Transport for the Widget API over postMessage.
*/
var PostmessageTransport = /*#__PURE__*/function (_EventEmitter) {
_inherits(PostmessageTransport, _EventEmitter);
var _super = _createSuper(PostmessageTransport);
function PostmessageTransport(sendDirection, initialWidgetId, transportWindow, inboundWindow) {
var _this;
_classCallCheck(this, PostmessageTransport);
_this = _super.call(this);
_this.sendDirection = sendDirection;
_this.initialWidgetId = initialWidgetId;
_this.transportWindow = transportWindow;
_this.inboundWindow = inboundWindow;
_defineProperty(_assertThisInitialized(_this), "strictOriginCheck", false);
_defineProperty(_assertThisInitialized(_this), "targetOrigin", "*");
_defineProperty(_assertThisInitialized(_this), "timeoutSeconds", 10);
_defineProperty(_assertThisInitialized(_this), "_ready", false);
_defineProperty(_assertThisInitialized(_this), "_widgetId", null);
_defineProperty(_assertThisInitialized(_this), "outboundRequests", new Map());
_defineProperty(_assertThisInitialized(_this), "stopController", new AbortController());
_this._widgetId = initialWidgetId;
return _this;
}
_createClass(PostmessageTransport, [{
key: "ready",
get: function get() {
return this._ready;
}
}, {
key: "widgetId",
get: function get() {
return this._widgetId || null;
}
}, {
key: "nextRequestId",
get: function get() {
var idBase = "widgetapi-".concat(Date.now());
var index = 0;
var id = idBase;
while (this.outboundRequests.has(id)) {
id = "".concat(idBase, "-").concat(index++);
}
// reserve the ID
this.outboundRequests.set(id, null);
return id;
}
}, {
key: "sendInternal",
value: function sendInternal(message) {
console.log("[PostmessageTransport] Sending object to ".concat(this.targetOrigin, ": "), message);
this.transportWindow.postMessage(message, this.targetOrigin);
}
}, {
key: "reply",
value: function reply(request, responseData) {
return this.sendInternal(_objectSpread(_objectSpread({}, request), {}, {
response: responseData
}));
}
}, {
key: "send",
value: function send(action, data) {
return this.sendComplete(action, data).then(function (r) {
return r.response;
});
}
}, {
key: "sendComplete",
value: function sendComplete(action, data) {
var _this2 = this;
if (!this.ready || !this.widgetId) {
return Promise.reject(new Error("Not ready or unknown widget ID"));
}
var request = {
api: this.sendDirection,
widgetId: this.widgetId,
requestId: this.nextRequestId,
action: action,
data: data
};
if (action === _.WidgetApiToWidgetAction.UpdateVisibility) {
request['visible'] = data['visible'];
}
return new Promise(function (prResolve, prReject) {
var resolve = function resolve(response) {
cleanUp();
prResolve(response);
};
var reject = function reject(err) {
cleanUp();
prReject(err);
};
var timerId = setTimeout(function () {
return reject(new Error("Request timed out"));
}, (_this2.timeoutSeconds || 1) * 1000);
var onStop = function onStop() {
return reject(new Error("Transport stopped"));
};
_this2.stopController.signal.addEventListener("abort", onStop);
var cleanUp = function cleanUp() {
_this2.outboundRequests["delete"](request.requestId);
clearTimeout(timerId);
_this2.stopController.signal.removeEventListener("abort", onStop);
};
_this2.outboundRequests.set(request.requestId, {
request: request,
resolve: resolve,
reject: reject
});
_this2.sendInternal(request);
});
}
}, {
key: "start",
value: function start() {
var _this3 = this;
this.inboundWindow.addEventListener("message", function (ev) {
_this3.handleMessage(ev);
});
this._ready = true;
}
}, {
key: "stop",
value: function stop() {
this._ready = false;
this.stopController.abort();
}
}, {
key: "handleMessage",
value: function handleMessage(ev) {
if (this.stopController.signal.aborted) return;
if (!ev.data) return; // invalid event
if (this.strictOriginCheck && ev.origin !== window.origin) return; // bad origin
// treat the message as a response first, then downgrade to a request
var response = ev.data;
if (!response.action || !response.requestId || !response.widgetId) return; // invalid request/response
if (!response.response) {
// it's a request
var request = response;
if (request.api !== (0, _.invertedDirection)(this.sendDirection)) return; // wrong direction
this.handleRequest(request);
} else {
// it's a response
if (response.api !== this.sendDirection) return; // wrong direction
this.handleResponse(response);
}
}
}, {
key: "handleRequest",
value: function handleRequest(request) {
if (this.widgetId) {
if (this.widgetId !== request.widgetId) return; // wrong widget
} else {
this._widgetId = request.widgetId;
}
this.emit("message", new CustomEvent("message", {
detail: request
}));
}
}, {
key: "handleResponse",
value: function handleResponse(response) {
if (response.widgetId !== this.widgetId) return; // wrong widget
var req = this.outboundRequests.get(response.requestId);
if (!req) return; // response to an unknown request
if ((0, _.isErrorResponse)(response.response)) {
var _err = response.response;
req.reject(new Error(_err.error.message));
} else {
req.resolve(response);
}
}
}]);
return PostmessageTransport;
}(_events.EventEmitter);
exports.PostmessageTransport = PostmessageTransport;
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