60 lines
2.4 KiB
TypeScript
60 lines
2.4 KiB
TypeScript
/**
|
|
* @license
|
|
* Copyright Google LLC All Rights Reserved.
|
|
*
|
|
* Use of this source code is governed by an MIT-style license that can be
|
|
* found in the LICENSE file at https://angular.io/license
|
|
*/
|
|
|
|
// we have to patch the instance since the proto is non-configurable
|
|
export function apply(api: _ZonePrivate, _global: any) {
|
|
const {ADD_EVENT_LISTENER_STR, REMOVE_EVENT_LISTENER_STR} = api.getGlobalObjects()!;
|
|
const WS = (<any>_global).WebSocket;
|
|
// On Safari window.EventTarget doesn't exist so need to patch WS add/removeEventListener
|
|
// On older Chrome, no need since EventTarget was already patched
|
|
if (!(<any>_global).EventTarget) {
|
|
api.patchEventTarget(_global, api, [WS.prototype]);
|
|
}
|
|
(<any>_global).WebSocket = function(x: any, y: any) {
|
|
const socket = arguments.length > 1 ? new WS(x, y) : new WS(x);
|
|
let proxySocket: any;
|
|
|
|
let proxySocketProto: any;
|
|
|
|
// Safari 7.0 has non-configurable own 'onmessage' and friends properties on the socket instance
|
|
const onmessageDesc = api.ObjectGetOwnPropertyDescriptor(socket, 'onmessage');
|
|
if (onmessageDesc && onmessageDesc.configurable === false) {
|
|
proxySocket = api.ObjectCreate(socket);
|
|
// socket have own property descriptor 'onopen', 'onmessage', 'onclose', 'onerror'
|
|
// but proxySocket not, so we will keep socket as prototype and pass it to
|
|
// patchOnProperties method
|
|
proxySocketProto = socket;
|
|
[ADD_EVENT_LISTENER_STR, REMOVE_EVENT_LISTENER_STR, 'send', 'close'].forEach(function(
|
|
propName) {
|
|
proxySocket[propName] = function() {
|
|
const args = api.ArraySlice.call(arguments);
|
|
if (propName === ADD_EVENT_LISTENER_STR || propName === REMOVE_EVENT_LISTENER_STR) {
|
|
const eventName = args.length > 0 ? args[0] : undefined;
|
|
if (eventName) {
|
|
const propertySymbol = Zone.__symbol__('ON_PROPERTY' + eventName);
|
|
socket[propertySymbol] = proxySocket[propertySymbol];
|
|
}
|
|
}
|
|
return socket[propName].apply(socket, args);
|
|
};
|
|
});
|
|
} else {
|
|
// we can patch the real socket
|
|
proxySocket = socket;
|
|
}
|
|
|
|
api.patchOnProperties(proxySocket, ['close', 'error', 'message', 'open'], proxySocketProto);
|
|
return proxySocket;
|
|
};
|
|
|
|
const globalWebSocket = _global['WebSocket'];
|
|
for (const prop in WS) {
|
|
globalWebSocket[prop] = WS[prop];
|
|
}
|
|
}
|