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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 | 2x 2x 2x 2x 2x 2x 363x 363x 363x 363x 162x 162x 363x 363x 2x 20x 20x 20x 20x 20x 3x 20x 17x 1x 1x 1x 1x 1x 17x 16x 16x 17x 17x 17x 20x 20x 2x 2x 2x 2x 2x 2x 1x 1x 1x 2x 2x 2x 2x 2x 12x 12x 12x 12x 12x 12x 12x 1x 1x 1x 12x 2x 2x 2x 9x 9x 12x 1x 1x 12x 3x 3x 3x 5x 5x 5x 2x 337x 337x 337x 337x 337x 337x 12x 12x 12x 12x 12x 12x 12x 337x 337x | import { isArray } from '@vue/shared'
import type { ComponentInternalInstance } from '../component'
import { ErrorCodes, callWithAsyncErrorHandling } from '../errorHandling'
import { DeprecationTypes, assertCompatEnabled } from './compatConfig'
import type { ComponentPublicInstance } from '../componentPublicInstance'
interface EventRegistry {
[event: string]: Function[] | undefined
}
const eventRegistryMap = /*@__PURE__*/ new WeakMap<
ComponentInternalInstance,
EventRegistry
>()
export function getRegistry(
instance: ComponentInternalInstance,
): EventRegistry {
let events = eventRegistryMap.get(instance)
if (!events) {
eventRegistryMap.set(instance, (events = Object.create(null)))
}
return events!
}
export function on(
instance: ComponentInternalInstance,
event: string | string[],
fn: Function,
): ComponentPublicInstance | null {
if (isArray(event)) {
event.forEach(e => on(instance, e, fn))
} else {
if (event.startsWith('hook:')) {
assertCompatEnabled(
DeprecationTypes.INSTANCE_EVENT_HOOKS,
instance,
event,
)
} else {
assertCompatEnabled(DeprecationTypes.INSTANCE_EVENT_EMITTER, instance)
}
const events = getRegistry(instance)
;(events[event] || (events[event] = [])).push(fn)
}
return instance.proxy
}
export function once(
instance: ComponentInternalInstance,
event: string,
fn: Function,
): ComponentPublicInstance | null {
const wrapped = (...args: any[]) => {
off(instance, event, wrapped)
fn.apply(instance.proxy, args)
}
wrapped.fn = fn
on(instance, event, wrapped)
return instance.proxy
}
export function off(
instance: ComponentInternalInstance,
event?: string | string[],
fn?: Function,
): ComponentPublicInstance | null {
assertCompatEnabled(DeprecationTypes.INSTANCE_EVENT_EMITTER, instance)
const vm = instance.proxy
// all
if (!event) {
eventRegistryMap.set(instance, Object.create(null))
return vm
}
// array of events
if (isArray(event)) {
event.forEach(e => off(instance, e, fn))
return vm
}
// specific event
const events = getRegistry(instance)
const cbs = events[event!]
if (!cbs) {
return vm
}
if (!fn) {
events[event!] = undefined
return vm
}
events[event!] = cbs.filter(cb => !(cb === fn || (cb as any).fn === fn))
return vm
}
export function emit(
instance: ComponentInternalInstance,
event: string,
args: any[],
): ComponentPublicInstance | null {
const cbs = getRegistry(instance)[event]
if (cbs) {
callWithAsyncErrorHandling(
cbs.map(cb => cb.bind(instance.proxy)),
instance,
ErrorCodes.COMPONENT_EVENT_HANDLER,
args,
)
}
return instance.proxy
}
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