40 lines
1.3 KiB
TypeScript
40 lines
1.3 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 eventTargetPatch(_global: any, api: _ZonePrivate) {
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if ((Zone as any)[api.symbol('patchEventTarget')]) {
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// EventTarget is already patched.
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return;
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}
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const {eventNames, zoneSymbolEventNames, TRUE_STR, FALSE_STR, ZONE_SYMBOL_PREFIX} =
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api.getGlobalObjects() !;
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// predefine all __zone_symbol__ + eventName + true/false string
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for (let i = 0; i < eventNames.length; i++) {
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const eventName = eventNames[i];
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const falseEventName = eventName + FALSE_STR;
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const trueEventName = eventName + TRUE_STR;
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const symbol = ZONE_SYMBOL_PREFIX + falseEventName;
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const symbolCapture = ZONE_SYMBOL_PREFIX + trueEventName;
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zoneSymbolEventNames[eventName] = {};
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zoneSymbolEventNames[eventName][FALSE_STR] = symbol;
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zoneSymbolEventNames[eventName][TRUE_STR] = symbolCapture;
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}
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const EVENT_TARGET = _global['EventTarget'];
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if (!EVENT_TARGET || !EVENT_TARGET.prototype) {
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return;
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}
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api.patchEventTarget(_global, [EVENT_TARGET && EVENT_TARGET.prototype]);
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return true;
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}
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export function patchEvent(global: any, api: _ZonePrivate) {
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api.patchEventPrototype(global, api);
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}
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