39 lines
1.5 KiB
TypeScript
39 lines
1.5 KiB
TypeScript
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/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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export function patchCallbacks(
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api: _ZonePrivate, target: any, targetName: string, method: string, callbacks: string[]) {
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const symbol = Zone.__symbol__(method);
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if (target[symbol]) {
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return;
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}
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const nativeDelegate = target[symbol] = target[method];
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target[method] = function(name: any, opts: any, options?: any) {
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if (opts && opts.prototype) {
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callbacks.forEach(function(callback) {
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const source = `${targetName}.${method}::` + callback;
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const prototype = opts.prototype;
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if (prototype.hasOwnProperty(callback)) {
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const descriptor = api.ObjectGetOwnPropertyDescriptor(prototype, callback);
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if (descriptor && descriptor.value) {
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descriptor.value = api.wrapWithCurrentZone(descriptor.value, source);
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api._redefineProperty(opts.prototype, callback, descriptor);
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} else if (prototype[callback]) {
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prototype[callback] = api.wrapWithCurrentZone(prototype[callback], source);
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}
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} else if (prototype[callback]) {
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prototype[callback] = api.wrapWithCurrentZone(prototype[callback], source);
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}
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});
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}
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return nativeDelegate.call(target, name, opts, options);
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};
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api.attachOriginToPatched(target[method], nativeDelegate);
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}
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