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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 | 2x 2x 2x 2x 2x 2x 2x 2x 2x 2423x 2423x 2x 2x 2x 2x 2x 2423x 2x 1994x 1994x 2x 1x 1x 1x 1x 1x 1x 1x 1x 1x 2x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 2x 34x 33x 33x 33x 33x 33x 33x 33x 34x 1x 1x 34x 2x 5797x 5792x 5792x 5792x 5797x 2x 5798x 5786x 5786x 5786x 5798x 2x 354x 354x 354x 354x 369x 369x 354x 354x 4x 4x 354x 354x 1x 1x 1x 1x 1x 354x 1x 1x 1x 354x 354x 354x 2x 2x 26x 26x 2x 275x 275x 2x 6x 5x 6x 1x 1x 1x 1x 6x | import type { ReactiveEffect } from './effect'
import { warn } from './warning'
export let activeEffectScope: EffectScope | undefined
export class EffectScope {
/**
* @internal
*/
private _active = true
/**
* @internal track `on` calls, allow `on` call multiple times
*/
private _on = 0
/**
* @internal
*/
effects: ReactiveEffect[] = []
/**
* @internal
*/
cleanups: (() => void)[] = []
private _isPaused = false
/**
* only assigned by undetached scope
* @internal
*/
parent: EffectScope | undefined
/**
* record undetached scopes
* @internal
*/
scopes: EffectScope[] | undefined
/**
* track a child scope's index in its parent's scopes array for optimized
* removal
* @internal
*/
private index: number | undefined
constructor(public detached = false) {
this.parent = activeEffectScope
if (!detached && activeEffectScope) {
this.index =
(activeEffectScope.scopes || (activeEffectScope.scopes = [])).push(
this,
) - 1
}
}
get active(): boolean {
return this._active
}
pause(): void {
if (this._active) {
this._isPaused = true
let i, l
if (this.scopes) {
for (i = 0, l = this.scopes.length; i < l; i++) {
this.scopes[i].pause()
}
}
for (i = 0, l = this.effects.length; i < l; i++) {
this.effects[i].pause()
}
}
}
/**
* Resumes the effect scope, including all child scopes and effects.
*/
resume(): void {
if (this._active) {
if (this._isPaused) {
this._isPaused = false
let i, l
if (this.scopes) {
for (i = 0, l = this.scopes.length; i < l; i++) {
this.scopes[i].resume()
}
}
for (i = 0, l = this.effects.length; i < l; i++) {
this.effects[i].resume()
}
}
}
}
run<T>(fn: () => T): T | undefined {
if (this._active) {
const currentEffectScope = activeEffectScope
try {
activeEffectScope = this
return fn()
} finally {
activeEffectScope = currentEffectScope
}
} else if (__DEV__) {
warn(`cannot run an inactive effect scope.`)
}
}
prevScope: EffectScope | undefined
/**
* This should only be called on non-detached scopes
* @internal
*/
on(): void {
if (++this._on === 1) {
this.prevScope = activeEffectScope
activeEffectScope = this
}
}
/**
* This should only be called on non-detached scopes
* @internal
*/
off(): void {
if (this._on > 0 && --this._on === 0) {
activeEffectScope = this.prevScope
this.prevScope = undefined
}
}
stop(fromParent?: boolean): void {
if (this._active) {
this._active = false
let i, l
for (i = 0, l = this.effects.length; i < l; i++) {
this.effects[i].stop()
}
this.effects.length = 0
for (i = 0, l = this.cleanups.length; i < l; i++) {
this.cleanups[i]()
}
this.cleanups.length = 0
if (this.scopes) {
for (i = 0, l = this.scopes.length; i < l; i++) {
this.scopes[i].stop(true)
}
this.scopes.length = 0
}
// nested scope, dereference from parent to avoid memory leaks
if (!this.detached && this.parent && !fromParent) {
// optimized O(1) removal
const last = this.parent.scopes!.pop()
if (last && last !== this) {
this.parent.scopes![this.index!] = last
last.index = this.index!
}
}
this.parent = undefined
}
}
}
/**
* Creates an effect scope object which can capture the reactive effects (i.e.
* computed and watchers) created within it so that these effects can be
* disposed together. For detailed use cases of this API, please consult its
* corresponding {@link https://github.com/vuejs/rfcs/blob/master/active-rfcs/0041-reactivity-effect-scope.md | RFC}.
*
* @param detached - Can be used to create a "detached" effect scope.
* @see {@link https://vuejs.org/api/reactivity-advanced.html#effectscope}
*/
export function effectScope(detached?: boolean): EffectScope {
return new EffectScope(detached)
}
/**
* Returns the current active effect scope if there is one.
*
* @see {@link https://vuejs.org/api/reactivity-advanced.html#getcurrentscope}
*/
export function getCurrentScope(): EffectScope | undefined {
return activeEffectScope
}
/**
* Registers a dispose callback on the current active effect scope. The
* callback will be invoked when the associated effect scope is stopped.
*
* @param fn - The callback function to attach to the scope's cleanup.
* @see {@link https://vuejs.org/api/reactivity-advanced.html#onscopedispose}
*/
export function onScopeDispose(fn: () => void, failSilently = false): void {
if (activeEffectScope) {
activeEffectScope.cleanups.push(fn)
} else if (__DEV__ && !failSilently) {
warn(
`onScopeDispose() is called when there is no active effect scope` +
` to be associated with.`,
)
}
}
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