701 lines
26 KiB
TypeScript
701 lines
26 KiB
TypeScript
/**
|
|
* @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
|
|
*/
|
|
/**
|
|
* @fileoverview
|
|
* @suppress {missingRequire}
|
|
*/
|
|
|
|
import {ADD_EVENT_LISTENER_STR, FALSE_STR, ObjectGetPrototypeOf, REMOVE_EVENT_LISTENER_STR, TRUE_STR, ZONE_SYMBOL_PREFIX, attachOriginToPatched, isNode, zoneSymbol} from './utils';
|
|
|
|
|
|
/** @internal **/
|
|
interface EventTaskData extends TaskData {
|
|
// use global callback or not
|
|
readonly useG?: boolean;
|
|
}
|
|
|
|
let passiveSupported = false;
|
|
|
|
if (typeof window !== 'undefined') {
|
|
try {
|
|
const options =
|
|
Object.defineProperty({}, 'passive', {get: function() { passiveSupported = true; }});
|
|
|
|
window.addEventListener('test', options, options);
|
|
window.removeEventListener('test', options, options);
|
|
} catch (err) {
|
|
passiveSupported = false;
|
|
}
|
|
}
|
|
|
|
// an identifier to tell ZoneTask do not create a new invoke closure
|
|
const OPTIMIZED_ZONE_EVENT_TASK_DATA: EventTaskData = {
|
|
useG: true
|
|
};
|
|
|
|
export const zoneSymbolEventNames: any = {};
|
|
export const globalSources: any = {};
|
|
|
|
const EVENT_NAME_SYMBOL_REGX = new RegExp('^' + ZONE_SYMBOL_PREFIX + '(\\w+)(true|false)$');
|
|
const IMMEDIATE_PROPAGATION_SYMBOL = zoneSymbol('propagationStopped');
|
|
|
|
export interface PatchEventTargetOptions {
|
|
// validateHandler
|
|
vh?: (nativeDelegate: any, delegate: any, target: any, args: any) => boolean;
|
|
// addEventListener function name
|
|
add?: string;
|
|
// removeEventListener function name
|
|
rm?: string;
|
|
// prependEventListener function name
|
|
prepend?: string;
|
|
// listeners function name
|
|
listeners?: string;
|
|
// removeAllListeners function name
|
|
rmAll?: string;
|
|
// useGlobalCallback flag
|
|
useG?: boolean;
|
|
// check duplicate flag when addEventListener
|
|
chkDup?: boolean;
|
|
// return target flag when addEventListener
|
|
rt?: boolean;
|
|
// event compare handler
|
|
diff?: (task: any, delegate: any) => boolean;
|
|
// support passive or not
|
|
supportPassive?: boolean;
|
|
// get string from eventName (in nodejs, eventName maybe Symbol)
|
|
eventNameToString?: (eventName: any) => string;
|
|
// transfer eventName
|
|
transferEventName?: (eventName: string) => string;
|
|
}
|
|
|
|
export function patchEventTarget(
|
|
_global: any, apis: any[], patchOptions?: PatchEventTargetOptions) {
|
|
const ADD_EVENT_LISTENER = (patchOptions && patchOptions.add) || ADD_EVENT_LISTENER_STR;
|
|
const REMOVE_EVENT_LISTENER = (patchOptions && patchOptions.rm) || REMOVE_EVENT_LISTENER_STR;
|
|
|
|
const LISTENERS_EVENT_LISTENER = (patchOptions && patchOptions.listeners) || 'eventListeners';
|
|
const REMOVE_ALL_LISTENERS_EVENT_LISTENER =
|
|
(patchOptions && patchOptions.rmAll) || 'removeAllListeners';
|
|
|
|
const zoneSymbolAddEventListener = zoneSymbol(ADD_EVENT_LISTENER);
|
|
|
|
const ADD_EVENT_LISTENER_SOURCE = '.' + ADD_EVENT_LISTENER + ':';
|
|
|
|
const PREPEND_EVENT_LISTENER = 'prependListener';
|
|
const PREPEND_EVENT_LISTENER_SOURCE = '.' + PREPEND_EVENT_LISTENER + ':';
|
|
|
|
const invokeTask = function(task: any, target: any, event: Event) {
|
|
// for better performance, check isRemoved which is set
|
|
// by removeEventListener
|
|
if (task.isRemoved) {
|
|
return;
|
|
}
|
|
const delegate = task.callback;
|
|
if (typeof delegate === 'object' && delegate.handleEvent) {
|
|
// create the bind version of handleEvent when invoke
|
|
task.callback = (event: Event) => delegate.handleEvent(event);
|
|
task.originalDelegate = delegate;
|
|
}
|
|
// invoke static task.invoke
|
|
task.invoke(task, target, [event]);
|
|
const options = task.options;
|
|
if (options && typeof options === 'object' && options.once) {
|
|
// if options.once is true, after invoke once remove listener here
|
|
// only browser need to do this, nodejs eventEmitter will cal removeListener
|
|
// inside EventEmitter.once
|
|
const delegate = task.originalDelegate ? task.originalDelegate : task.callback;
|
|
target[REMOVE_EVENT_LISTENER].call(target, event.type, delegate, options);
|
|
}
|
|
};
|
|
|
|
// global shared zoneAwareCallback to handle all event callback with capture = false
|
|
const globalZoneAwareCallback = function(this: unknown, event: Event) {
|
|
// https://github.com/angular/zone.js/issues/911, in IE, sometimes
|
|
// event will be undefined, so we need to use window.event
|
|
event = event || _global.event;
|
|
if (!event) {
|
|
return;
|
|
}
|
|
// event.target is needed for Samsung TV and SourceBuffer
|
|
// || global is needed https://github.com/angular/zone.js/issues/190
|
|
const target: any = this || event.target || _global;
|
|
const tasks = target[zoneSymbolEventNames[event.type][FALSE_STR]];
|
|
if (tasks) {
|
|
// invoke all tasks which attached to current target with given event.type and capture = false
|
|
// for performance concern, if task.length === 1, just invoke
|
|
if (tasks.length === 1) {
|
|
invokeTask(tasks[0], target, event);
|
|
} else {
|
|
// https://github.com/angular/zone.js/issues/836
|
|
// copy the tasks array before invoke, to avoid
|
|
// the callback will remove itself or other listener
|
|
const copyTasks = tasks.slice();
|
|
for (let i = 0; i < copyTasks.length; i++) {
|
|
if (event && (event as any)[IMMEDIATE_PROPAGATION_SYMBOL] === true) {
|
|
break;
|
|
}
|
|
invokeTask(copyTasks[i], target, event);
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
// global shared zoneAwareCallback to handle all event callback with capture = true
|
|
const globalZoneAwareCaptureCallback = function(this: unknown, event: Event) {
|
|
// https://github.com/angular/zone.js/issues/911, in IE, sometimes
|
|
// event will be undefined, so we need to use window.event
|
|
event = event || _global.event;
|
|
if (!event) {
|
|
return;
|
|
}
|
|
// event.target is needed for Samsung TV and SourceBuffer
|
|
// || global is needed https://github.com/angular/zone.js/issues/190
|
|
const target: any = this || event.target || _global;
|
|
const tasks = target[zoneSymbolEventNames[event.type][TRUE_STR]];
|
|
if (tasks) {
|
|
// invoke all tasks which attached to current target with given event.type and capture = false
|
|
// for performance concern, if task.length === 1, just invoke
|
|
if (tasks.length === 1) {
|
|
invokeTask(tasks[0], target, event);
|
|
} else {
|
|
// https://github.com/angular/zone.js/issues/836
|
|
// copy the tasks array before invoke, to avoid
|
|
// the callback will remove itself or other listener
|
|
const copyTasks = tasks.slice();
|
|
for (let i = 0; i < copyTasks.length; i++) {
|
|
if (event && (event as any)[IMMEDIATE_PROPAGATION_SYMBOL] === true) {
|
|
break;
|
|
}
|
|
invokeTask(copyTasks[i], target, event);
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
function patchEventTargetMethods(obj: any, patchOptions?: PatchEventTargetOptions) {
|
|
if (!obj) {
|
|
return false;
|
|
}
|
|
|
|
let useGlobalCallback = true;
|
|
if (patchOptions && patchOptions.useG !== undefined) {
|
|
useGlobalCallback = patchOptions.useG;
|
|
}
|
|
const validateHandler = patchOptions && patchOptions.vh;
|
|
|
|
let checkDuplicate = true;
|
|
if (patchOptions && patchOptions.chkDup !== undefined) {
|
|
checkDuplicate = patchOptions.chkDup;
|
|
}
|
|
|
|
let returnTarget = false;
|
|
if (patchOptions && patchOptions.rt !== undefined) {
|
|
returnTarget = patchOptions.rt;
|
|
}
|
|
|
|
let proto = obj;
|
|
while (proto && !proto.hasOwnProperty(ADD_EVENT_LISTENER)) {
|
|
proto = ObjectGetPrototypeOf(proto);
|
|
}
|
|
if (!proto && obj[ADD_EVENT_LISTENER]) {
|
|
// somehow we did not find it, but we can see it. This happens on IE for Window properties.
|
|
proto = obj;
|
|
}
|
|
|
|
if (!proto) {
|
|
return false;
|
|
}
|
|
if (proto[zoneSymbolAddEventListener]) {
|
|
return false;
|
|
}
|
|
|
|
const eventNameToString = patchOptions && patchOptions.eventNameToString;
|
|
|
|
// a shared global taskData to pass data for scheduleEventTask
|
|
// so we do not need to create a new object just for pass some data
|
|
const taskData: any = {};
|
|
|
|
const nativeAddEventListener = proto[zoneSymbolAddEventListener] = proto[ADD_EVENT_LISTENER];
|
|
const nativeRemoveEventListener = proto[zoneSymbol(REMOVE_EVENT_LISTENER)] =
|
|
proto[REMOVE_EVENT_LISTENER];
|
|
|
|
const nativeListeners = proto[zoneSymbol(LISTENERS_EVENT_LISTENER)] =
|
|
proto[LISTENERS_EVENT_LISTENER];
|
|
const nativeRemoveAllListeners = proto[zoneSymbol(REMOVE_ALL_LISTENERS_EVENT_LISTENER)] =
|
|
proto[REMOVE_ALL_LISTENERS_EVENT_LISTENER];
|
|
|
|
let nativePrependEventListener: any;
|
|
if (patchOptions && patchOptions.prepend) {
|
|
nativePrependEventListener = proto[zoneSymbol(patchOptions.prepend)] =
|
|
proto[patchOptions.prepend];
|
|
}
|
|
|
|
function checkIsPassive(task: Task) {
|
|
if (!passiveSupported && typeof taskData.options !== 'boolean' &&
|
|
typeof taskData.options !== 'undefined' && taskData.options !== null) {
|
|
// options is a non-null non-undefined object
|
|
// passive is not supported
|
|
// don't pass options as object
|
|
// just pass capture as a boolean
|
|
(task as any).options = !!taskData.options.capture;
|
|
taskData.options = (task as any).options;
|
|
}
|
|
}
|
|
|
|
const customScheduleGlobal = function(task: Task) {
|
|
// if there is already a task for the eventName + capture,
|
|
// just return, because we use the shared globalZoneAwareCallback here.
|
|
if (taskData.isExisting) {
|
|
return;
|
|
}
|
|
checkIsPassive(task);
|
|
return nativeAddEventListener.call(
|
|
taskData.target, taskData.eventName,
|
|
taskData.capture ? globalZoneAwareCaptureCallback : globalZoneAwareCallback,
|
|
taskData.options);
|
|
};
|
|
|
|
const customCancelGlobal = function(task: any) {
|
|
// if task is not marked as isRemoved, this call is directly
|
|
// from Zone.prototype.cancelTask, we should remove the task
|
|
// from tasksList of target first
|
|
if (!task.isRemoved) {
|
|
const symbolEventNames = zoneSymbolEventNames[task.eventName];
|
|
let symbolEventName;
|
|
if (symbolEventNames) {
|
|
symbolEventName = symbolEventNames[task.capture ? TRUE_STR : FALSE_STR];
|
|
}
|
|
const existingTasks = symbolEventName && task.target[symbolEventName];
|
|
if (existingTasks) {
|
|
for (let i = 0; i < existingTasks.length; i++) {
|
|
const existingTask = existingTasks[i];
|
|
if (existingTask === task) {
|
|
existingTasks.splice(i, 1);
|
|
// set isRemoved to data for faster invokeTask check
|
|
task.isRemoved = true;
|
|
if (existingTasks.length === 0) {
|
|
// all tasks for the eventName + capture have gone,
|
|
// remove globalZoneAwareCallback and remove the task cache from target
|
|
task.allRemoved = true;
|
|
task.target[symbolEventName] = null;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
// if all tasks for the eventName + capture have gone,
|
|
// we will really remove the global event callback,
|
|
// if not, return
|
|
if (!task.allRemoved) {
|
|
return;
|
|
}
|
|
return nativeRemoveEventListener.call(
|
|
task.target, task.eventName,
|
|
task.capture ? globalZoneAwareCaptureCallback : globalZoneAwareCallback, task.options);
|
|
};
|
|
|
|
const customScheduleNonGlobal = function(task: Task) {
|
|
checkIsPassive(task);
|
|
return nativeAddEventListener.call(
|
|
taskData.target, taskData.eventName, task.invoke, taskData.options);
|
|
};
|
|
|
|
const customSchedulePrepend = function(task: Task) {
|
|
return nativePrependEventListener.call(
|
|
taskData.target, taskData.eventName, task.invoke, taskData.options);
|
|
};
|
|
|
|
const customCancelNonGlobal = function(task: any) {
|
|
return nativeRemoveEventListener.call(task.target, task.eventName, task.invoke, task.options);
|
|
};
|
|
|
|
const customSchedule = useGlobalCallback ? customScheduleGlobal : customScheduleNonGlobal;
|
|
const customCancel = useGlobalCallback ? customCancelGlobal : customCancelNonGlobal;
|
|
|
|
const compareTaskCallbackVsDelegate = function(task: any, delegate: any) {
|
|
const typeOfDelegate = typeof delegate;
|
|
return (typeOfDelegate === 'function' && task.callback === delegate) ||
|
|
(typeOfDelegate === 'object' && task.originalDelegate === delegate);
|
|
};
|
|
|
|
const compare =
|
|
(patchOptions && patchOptions.diff) ? patchOptions.diff : compareTaskCallbackVsDelegate;
|
|
|
|
const blackListedEvents: string[] = (Zone as any)[zoneSymbol('BLACK_LISTED_EVENTS')];
|
|
|
|
const makeAddListener = function(
|
|
nativeListener: any, addSource: string, customScheduleFn: any, customCancelFn: any,
|
|
returnTarget = false, prepend = false) {
|
|
return function(this: unknown) {
|
|
const target = this || _global;
|
|
let eventName = arguments[0];
|
|
if (patchOptions && patchOptions.transferEventName) {
|
|
eventName = patchOptions.transferEventName(eventName);
|
|
}
|
|
let delegate = arguments[1];
|
|
if (!delegate) {
|
|
return nativeListener.apply(this, arguments);
|
|
}
|
|
if (isNode && eventName === 'uncaughtException') {
|
|
// don't patch uncaughtException of nodejs to prevent endless loop
|
|
return nativeListener.apply(this, arguments);
|
|
}
|
|
|
|
// don't create the bind delegate function for handleEvent
|
|
// case here to improve addEventListener performance
|
|
// we will create the bind delegate when invoke
|
|
let isHandleEvent = false;
|
|
if (typeof delegate !== 'function') {
|
|
if (!delegate.handleEvent) {
|
|
return nativeListener.apply(this, arguments);
|
|
}
|
|
isHandleEvent = true;
|
|
}
|
|
|
|
if (validateHandler && !validateHandler(nativeListener, delegate, target, arguments)) {
|
|
return;
|
|
}
|
|
|
|
const options = arguments[2];
|
|
|
|
if (blackListedEvents) {
|
|
// check black list
|
|
for (let i = 0; i < blackListedEvents.length; i++) {
|
|
if (eventName === blackListedEvents[i]) {
|
|
return nativeListener.apply(this, arguments);
|
|
}
|
|
}
|
|
}
|
|
|
|
let capture;
|
|
let once = false;
|
|
if (options === undefined) {
|
|
capture = false;
|
|
} else if (options === true) {
|
|
capture = true;
|
|
} else if (options === false) {
|
|
capture = false;
|
|
} else {
|
|
capture = options ? !!options.capture : false;
|
|
once = options ? !!options.once : false;
|
|
}
|
|
|
|
const zone = Zone.current;
|
|
const symbolEventNames = zoneSymbolEventNames[eventName];
|
|
let symbolEventName;
|
|
if (!symbolEventNames) {
|
|
// the code is duplicate, but I just want to get some better performance
|
|
const falseEventName =
|
|
(eventNameToString ? eventNameToString(eventName) : eventName) + FALSE_STR;
|
|
const trueEventName =
|
|
(eventNameToString ? eventNameToString(eventName) : 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;
|
|
symbolEventName = capture ? symbolCapture : symbol;
|
|
} else {
|
|
symbolEventName = symbolEventNames[capture ? TRUE_STR : FALSE_STR];
|
|
}
|
|
let existingTasks = target[symbolEventName];
|
|
let isExisting = false;
|
|
if (existingTasks) {
|
|
// already have task registered
|
|
isExisting = true;
|
|
if (checkDuplicate) {
|
|
for (let i = 0; i < existingTasks.length; i++) {
|
|
if (compare(existingTasks[i], delegate)) {
|
|
// same callback, same capture, same event name, just return
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
existingTasks = target[symbolEventName] = [];
|
|
}
|
|
let source;
|
|
const constructorName = target.constructor['name'];
|
|
const targetSource = globalSources[constructorName];
|
|
if (targetSource) {
|
|
source = targetSource[eventName];
|
|
}
|
|
if (!source) {
|
|
source = constructorName + addSource +
|
|
(eventNameToString ? eventNameToString(eventName) : eventName);
|
|
}
|
|
// do not create a new object as task.data to pass those things
|
|
// just use the global shared one
|
|
taskData.options = options;
|
|
if (once) {
|
|
// if addEventListener with once options, we don't pass it to
|
|
// native addEventListener, instead we keep the once setting
|
|
// and handle ourselves.
|
|
taskData.options.once = false;
|
|
}
|
|
taskData.target = target;
|
|
taskData.capture = capture;
|
|
taskData.eventName = eventName;
|
|
taskData.isExisting = isExisting;
|
|
|
|
const data = useGlobalCallback ? OPTIMIZED_ZONE_EVENT_TASK_DATA : undefined;
|
|
|
|
// keep taskData into data to allow onScheduleEventTask to access the task information
|
|
if (data) {
|
|
(data as any).taskData = taskData;
|
|
}
|
|
|
|
const task: any =
|
|
zone.scheduleEventTask(source, delegate, data, customScheduleFn, customCancelFn);
|
|
|
|
// should clear taskData.target to avoid memory leak
|
|
// issue, https://github.com/angular/angular/issues/20442
|
|
taskData.target = null;
|
|
|
|
// need to clear up taskData because it is a global object
|
|
if (data) {
|
|
(data as any).taskData = null;
|
|
}
|
|
|
|
// have to save those information to task in case
|
|
// application may call task.zone.cancelTask() directly
|
|
if (once) {
|
|
options.once = true;
|
|
}
|
|
if (!(!passiveSupported && typeof task.options === 'boolean')) {
|
|
// if not support passive, and we pass an option object
|
|
// to addEventListener, we should save the options to task
|
|
task.options = options;
|
|
}
|
|
task.target = target;
|
|
task.capture = capture;
|
|
task.eventName = eventName;
|
|
if (isHandleEvent) {
|
|
// save original delegate for compare to check duplicate
|
|
(task as any).originalDelegate = delegate;
|
|
}
|
|
if (!prepend) {
|
|
existingTasks.push(task);
|
|
} else {
|
|
existingTasks.unshift(task);
|
|
}
|
|
|
|
if (returnTarget) {
|
|
return target;
|
|
}
|
|
};
|
|
};
|
|
|
|
proto[ADD_EVENT_LISTENER] = makeAddListener(
|
|
nativeAddEventListener, ADD_EVENT_LISTENER_SOURCE, customSchedule, customCancel,
|
|
returnTarget);
|
|
if (nativePrependEventListener) {
|
|
proto[PREPEND_EVENT_LISTENER] = makeAddListener(
|
|
nativePrependEventListener, PREPEND_EVENT_LISTENER_SOURCE, customSchedulePrepend,
|
|
customCancel, returnTarget, true);
|
|
}
|
|
|
|
proto[REMOVE_EVENT_LISTENER] = function() {
|
|
const target = this || _global;
|
|
let eventName = arguments[0];
|
|
if (patchOptions && patchOptions.transferEventName) {
|
|
eventName = patchOptions.transferEventName(eventName);
|
|
}
|
|
const options = arguments[2];
|
|
|
|
let capture;
|
|
if (options === undefined) {
|
|
capture = false;
|
|
} else if (options === true) {
|
|
capture = true;
|
|
} else if (options === false) {
|
|
capture = false;
|
|
} else {
|
|
capture = options ? !!options.capture : false;
|
|
}
|
|
|
|
const delegate = arguments[1];
|
|
if (!delegate) {
|
|
return nativeRemoveEventListener.apply(this, arguments);
|
|
}
|
|
|
|
if (validateHandler &&
|
|
!validateHandler(nativeRemoveEventListener, delegate, target, arguments)) {
|
|
return;
|
|
}
|
|
|
|
const symbolEventNames = zoneSymbolEventNames[eventName];
|
|
let symbolEventName;
|
|
if (symbolEventNames) {
|
|
symbolEventName = symbolEventNames[capture ? TRUE_STR : FALSE_STR];
|
|
}
|
|
const existingTasks = symbolEventName && target[symbolEventName];
|
|
if (existingTasks) {
|
|
for (let i = 0; i < existingTasks.length; i++) {
|
|
const existingTask = existingTasks[i];
|
|
if (compare(existingTask, delegate)) {
|
|
existingTasks.splice(i, 1);
|
|
// set isRemoved to data for faster invokeTask check
|
|
(existingTask as any).isRemoved = true;
|
|
if (existingTasks.length === 0) {
|
|
// all tasks for the eventName + capture have gone,
|
|
// remove globalZoneAwareCallback and remove the task cache from target
|
|
(existingTask as any).allRemoved = true;
|
|
target[symbolEventName] = null;
|
|
// in the target, we have an event listener which is added by on_property
|
|
// such as target.onclick = function() {}, so we need to clear this internal
|
|
// property too if all delegates all removed
|
|
if (typeof eventName === 'string') {
|
|
const onPropertySymbol = ZONE_SYMBOL_PREFIX + 'ON_PROPERTY' + eventName;
|
|
target[onPropertySymbol] = null;
|
|
}
|
|
}
|
|
existingTask.zone.cancelTask(existingTask);
|
|
if (returnTarget) {
|
|
return target;
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
// issue 930, didn't find the event name or callback
|
|
// from zone kept existingTasks, the callback maybe
|
|
// added outside of zone, we need to call native removeEventListener
|
|
// to try to remove it.
|
|
return nativeRemoveEventListener.apply(this, arguments);
|
|
};
|
|
|
|
proto[LISTENERS_EVENT_LISTENER] = function() {
|
|
const target = this || _global;
|
|
let eventName = arguments[0];
|
|
if (patchOptions && patchOptions.transferEventName) {
|
|
eventName = patchOptions.transferEventName(eventName);
|
|
}
|
|
|
|
const listeners: any[] = [];
|
|
const tasks =
|
|
findEventTasks(target, eventNameToString ? eventNameToString(eventName) : eventName);
|
|
|
|
for (let i = 0; i < tasks.length; i++) {
|
|
const task: any = tasks[i];
|
|
let delegate = task.originalDelegate ? task.originalDelegate : task.callback;
|
|
listeners.push(delegate);
|
|
}
|
|
return listeners;
|
|
};
|
|
|
|
proto[REMOVE_ALL_LISTENERS_EVENT_LISTENER] = function() {
|
|
const target = this || _global;
|
|
|
|
let eventName = arguments[0];
|
|
if (!eventName) {
|
|
const keys = Object.keys(target);
|
|
for (let i = 0; i < keys.length; i++) {
|
|
const prop = keys[i];
|
|
const match = EVENT_NAME_SYMBOL_REGX.exec(prop);
|
|
let evtName = match && match[1];
|
|
// in nodejs EventEmitter, removeListener event is
|
|
// used for monitoring the removeListener call,
|
|
// so just keep removeListener eventListener until
|
|
// all other eventListeners are removed
|
|
if (evtName && evtName !== 'removeListener') {
|
|
this[REMOVE_ALL_LISTENERS_EVENT_LISTENER].call(this, evtName);
|
|
}
|
|
}
|
|
// remove removeListener listener finally
|
|
this[REMOVE_ALL_LISTENERS_EVENT_LISTENER].call(this, 'removeListener');
|
|
} else {
|
|
if (patchOptions && patchOptions.transferEventName) {
|
|
eventName = patchOptions.transferEventName(eventName);
|
|
}
|
|
const symbolEventNames = zoneSymbolEventNames[eventName];
|
|
if (symbolEventNames) {
|
|
const symbolEventName = symbolEventNames[FALSE_STR];
|
|
const symbolCaptureEventName = symbolEventNames[TRUE_STR];
|
|
|
|
const tasks = target[symbolEventName];
|
|
const captureTasks = target[symbolCaptureEventName];
|
|
|
|
if (tasks) {
|
|
const removeTasks = tasks.slice();
|
|
for (let i = 0; i < removeTasks.length; i++) {
|
|
const task = removeTasks[i];
|
|
let delegate = task.originalDelegate ? task.originalDelegate : task.callback;
|
|
this[REMOVE_EVENT_LISTENER].call(this, eventName, delegate, task.options);
|
|
}
|
|
}
|
|
|
|
if (captureTasks) {
|
|
const removeTasks = captureTasks.slice();
|
|
for (let i = 0; i < removeTasks.length; i++) {
|
|
const task = removeTasks[i];
|
|
let delegate = task.originalDelegate ? task.originalDelegate : task.callback;
|
|
this[REMOVE_EVENT_LISTENER].call(this, eventName, delegate, task.options);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (returnTarget) {
|
|
return this;
|
|
}
|
|
};
|
|
|
|
// for native toString patch
|
|
attachOriginToPatched(proto[ADD_EVENT_LISTENER], nativeAddEventListener);
|
|
attachOriginToPatched(proto[REMOVE_EVENT_LISTENER], nativeRemoveEventListener);
|
|
if (nativeRemoveAllListeners) {
|
|
attachOriginToPatched(proto[REMOVE_ALL_LISTENERS_EVENT_LISTENER], nativeRemoveAllListeners);
|
|
}
|
|
if (nativeListeners) {
|
|
attachOriginToPatched(proto[LISTENERS_EVENT_LISTENER], nativeListeners);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
let results: any[] = [];
|
|
for (let i = 0; i < apis.length; i++) {
|
|
results[i] = patchEventTargetMethods(apis[i], patchOptions);
|
|
}
|
|
|
|
return results;
|
|
}
|
|
|
|
export function findEventTasks(target: any, eventName: string): Task[] {
|
|
const foundTasks: any[] = [];
|
|
for (let prop in target) {
|
|
const match = EVENT_NAME_SYMBOL_REGX.exec(prop);
|
|
let evtName = match && match[1];
|
|
if (evtName && (!eventName || evtName === eventName)) {
|
|
const tasks: any = target[prop];
|
|
if (tasks) {
|
|
for (let i = 0; i < tasks.length; i++) {
|
|
foundTasks.push(tasks[i]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return foundTasks;
|
|
}
|
|
|
|
export function patchEventPrototype(global: any, api: _ZonePrivate) {
|
|
const Event = global['Event'];
|
|
if (Event && Event.prototype) {
|
|
api.patchMethod(
|
|
Event.prototype, 'stopImmediatePropagation',
|
|
(delegate: Function) => function(self: any, args: any[]) {
|
|
self[IMMEDIATE_PROPAGATION_SYMBOL] = true;
|
|
// we need to call the native stopImmediatePropagation
|
|
// in case in some hybrid application, some part of
|
|
// application will be controlled by zone, some are not
|
|
delegate && delegate.apply(self, args);
|
|
});
|
|
}
|
|
}
|