66 lines
2.4 KiB
TypeScript
66 lines
2.4 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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Zone.__load_patch('mediaQuery', (global: any, Zone: ZoneType, api: _ZonePrivate) => {
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function patchAddListener(proto: any) {
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api.patchMethod(proto, 'addListener', (delegate: Function) => (self: any, args: any[]) => {
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const callback = args.length > 0 ? args[0] : null;
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if (typeof callback === 'function') {
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const wrapperedCallback = Zone.current.wrap(callback, 'MediaQuery');
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callback[api.symbol('mediaQueryCallback')] = wrapperedCallback;
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return delegate.call(self, wrapperedCallback);
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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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}
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function patchRemoveListener(proto: any) {
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api.patchMethod(proto, 'removeListener', (delegate: Function) => (self: any, args: any[]) => {
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const callback = args.length > 0 ? args[0] : null;
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if (typeof callback === 'function') {
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const wrapperedCallback = callback[api.symbol('mediaQueryCallback')];
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if (wrapperedCallback) {
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return delegate.call(self, wrapperedCallback);
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} else {
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return delegate.apply(self, args);
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}
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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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}
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if (global['MediaQueryList']) {
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const proto = global['MediaQueryList'].prototype;
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patchAddListener(proto);
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patchRemoveListener(proto);
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} else if (global['matchMedia']) {
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api.patchMethod(global, 'matchMedia', (delegate: Function) => (self: any, args: any[]) => {
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const mql = delegate.apply(self, args);
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if (mql) {
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// try to patch MediaQueryList.prototype
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const proto = Object.getPrototypeOf(mql);
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if (proto && proto['addListener']) {
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// try to patch proto, don't need to worry about patch
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// multiple times, because, api.patchEventTarget will check it
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patchAddListener(proto);
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patchRemoveListener(proto);
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patchAddListener(mql);
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patchRemoveListener(mql);
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} else if (mql['addListener']) {
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// proto not exists, or proto has no addListener method
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// try to patch mql instance
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patchAddListener(mql);
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patchRemoveListener(mql);
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}
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}
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return mql;
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});
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}
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});
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