/**

* @license

* Copyright Google Inc. 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

*/

export function eventTargetLegacyPatch(_global: any, api: _ZonePrivate) {

const {eventNames, globalSources, zoneSymbolEventNames, TRUE_STR, FALSE_STR, ZONE_SYMBOL_PREFIX} =

api.getGlobalObjects()!;

const WTF_ISSUE_555 =

'Anchor,Area,Audio,BR,Base,BaseFont,Body,Button,Canvas,Content,DList,Directory,Div,Embed,FieldSet,Font,Form,Frame,FrameSet,HR,Head,Heading,Html,IFrame,Image,Input,Keygen,LI,Label,Legend,Link,Map,Marquee,Media,Menu,Meta,Meter,Mod,OList,Object,OptGroup,Option,Output,Paragraph,Pre,Progress,Quote,Script,Select,Source,Span,Style,TableCaption,TableCell,TableCol,Table,TableRow,TableSection,TextArea,Title,Track,UList,Unknown,Video';

const NO_EVENT_TARGET =

'ApplicationCache,EventSource,FileReader,InputMethodContext,MediaController,MessagePort,Node,Performance,SVGElementInstance,SharedWorker,TextTrack,TextTrackCue,TextTrackList,WebKitNamedFlow,Window,Worker,WorkerGlobalScope,XMLHttpRequest,XMLHttpRequestEventTarget,XMLHttpRequestUpload,IDBRequest,IDBOpenDBRequest,IDBDatabase,IDBTransaction,IDBCursor,DBIndex,WebSocket'

.split(',');

const EVENT_TARGET = 'EventTarget';

let apis: any[] = [];

const isWtf = _global['wtf'];

const WTF_ISSUE_555_ARRAY = WTF_ISSUE_555.split(',');

if (isWtf) {

// Workaround for: https://github.com/google/tracing-framework/issues/555

apis = WTF_ISSUE_555_ARRAY.map((v) => 'HTML' + v + 'Element').concat(NO_EVENT_TARGET);

} else if (_global[EVENT_TARGET]) {

apis.push(EVENT_TARGET);

} else {

// Note: EventTarget is not available in all browsers,

// if it's not available, we instead patch the APIs in the IDL that inherit from EventTarget

apis = NO_EVENT_TARGET;

}

const isDisableIECheck = _global['__Zone_disable_IE_check'] || false;

const isEnableCrossContextCheck = _global['__Zone_enable_cross_context_check'] || false;

const ieOrEdge = api.isIEOrEdge();

const ADD_EVENT_LISTENER_SOURCE = '.addEventListener:';

const FUNCTION_WRAPPER = '[object FunctionWrapper]';

const BROWSER_TOOLS = 'function __BROWSERTOOLS_CONSOLE_SAFEFUNC() { [native code] }';

// predefine all __zone_symbol__ + eventName + true/false string

for (let i = 0; i < eventNames.length; i++) {

const eventName = eventNames[i];

const falseEventName = eventName + FALSE_STR;

const trueEventName = eventName + TRUE_STR;

const symbol = ZONE_SYMBOL_PREFIX + falseEventName;

const symbolCapture = ZONE_SYMBOL_PREFIX + trueEventName;

zoneSymbolEventNames[eventName] = {};

zoneSymbolEventNames[eventName][FALSE_STR] = symbol;

zoneSymbolEventNames[eventName][TRUE_STR] = symbolCapture;

}

// predefine all task.source string

for (let i = 0; i < WTF_ISSUE_555.length; i++) {

const target: any = WTF_ISSUE_555_ARRAY[i];

const targets: any = globalSources[target] = {};

for (let j = 0; j < eventNames.length; j++) {

const eventName = eventNames[j];

targets[eventName] = target + ADD_EVENT_LISTENER_SOURCE + eventName;

}

}

const checkIEAndCrossContext = function(

nativeDelegate: any, delegate: any, target: any, args: any) {

if (!isDisableIECheck && ieOrEdge) {

if (isEnableCrossContextCheck) {

try {

const testString = delegate.toString();

if ((testString === FUNCTION_WRAPPER || testString == BROWSER_TOOLS)) {

nativeDelegate.apply(target, args);

return false;

}

} catch (error) {

nativeDelegate.apply(target, args);

return false;

}

} else {

const testString = delegate.toString();

if ((testString === FUNCTION_WRAPPER || testString == BROWSER_TOOLS)) {

nativeDelegate.apply(target, args);

return false;

}

}

} else if (isEnableCrossContextCheck) {

try {

delegate.toString();

} catch (error) {

nativeDelegate.apply(target, args);

return false;

}

}

return true;

};

const apiTypes: any[] = [];

for (let i = 0; i < apis.length; i++) {

const type = _global[apis[i]];

apiTypes.push(type && type.prototype);

}

// vh is validateHandler to check event handler

// is valid or not(for security check)

api.patchEventTarget(_global, apiTypes, {vh: checkIEAndCrossContext});

(Zone as any)[api.symbol('patchEventTarget')] = !!_global[EVENT_TARGET];

return true;

}

export function patchEvent(global: any, api: _ZonePrivate) {

api.patchEventPrototype(global, api);

}