78 lines
2.7 KiB
TypeScript
78 lines
2.7 KiB
TypeScript
/**
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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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Zone.__load_patch('jsonp', (global: any, Zone: ZoneType, api: _ZonePrivate) => {
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const noop = function() {};
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// because jsonp is not a standard api, there are a lot of
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// implementations, so zone.js just provide a helper util to
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// patch the jsonp send and onSuccess/onError callback
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// the options is an object which contains
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// - jsonp, the jsonp object which hold the send function
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// - sendFuncName, the name of the send function
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// - successFuncName, success func name
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// - failedFuncName, failed func name
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(Zone as any)[Zone.__symbol__('jsonp')] = function patchJsonp(options: any) {
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if (!options || !options.jsonp || !options.sendFuncName) {
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return;
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}
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const noop = function() {};
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[options.successFuncName, options.failedFuncName].forEach(methodName => {
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if (!methodName) {
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return;
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}
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const oriFunc = global[methodName];
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if (oriFunc) {
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api.patchMethod(global, methodName, (delegate: Function) => (self: any, args: any[]) => {
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const task = global[api.symbol('jsonTask')];
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if (task) {
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task.callback = delegate;
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return task.invoke.apply(self, args);
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} else {
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return delegate.apply(self, args);
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}
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});
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} else {
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Object.defineProperty(global, methodName, {
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configurable: true,
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enumerable: true,
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get: function() {
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return function() {
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const task = global[api.symbol('jsonpTask')];
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const target = this ? this : global;
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const delegate = global[api.symbol(`jsonp${methodName}callback`)];
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if (task) {
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if (delegate) {
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task.callback = delegate;
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}
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global[api.symbol('jsonpTask')] = undefined;
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return task.invoke.apply(this, arguments);
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} else {
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if (delegate) {
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return delegate.apply(this, arguments);
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}
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}
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return null;
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};
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},
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set: function(callback: Function) {
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this[api.symbol(`jsonp${methodName}callback`)] = callback;
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}
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});
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}
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});
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api.patchMethod(
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options.jsonp, options.sendFuncName, (delegate: Function) => (self: any, args: any[]) => {
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global[api.symbol('jsonpTask')] = Zone.current.scheduleMacroTask(
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'jsonp', noop, {}, (task: Task) => { return delegate.apply(self, args); }, noop);
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});
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};
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});
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