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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 | 7x 7x 7x 36x 36x 36x 36x 36x 36x 36x 36x 8x 8x 5x 36x 36x 36x 6x 28x 27x 27x | import { scope } from '../constants'
import { destroyWatchers, watchWithScope } from '../helpers'
import { type Observer } from '../types'
export class Watch implements Observer {
// Observer
destructors = new Set<Function>()
childWatchers = new Set<Observer>()
destroyed = false
isCache = false
readonly watcher: (update: boolean) => void
constructor (watcher: (update: boolean) => void, freeParent?: boolean, freeUpdate?: boolean) {
this.watcher = watcher
if (!freeParent) {
const { activeWatcher } = scope
if (activeWatcher) {
activeWatcher.childWatchers.add(this)
activeWatcher.destructors.add(() => {
activeWatcher.childWatchers.delete(this)
})
}
}
if (!freeUpdate) {
watchWithScope(this, () => {
watcher(false)
})
}
}
destroy () {
destroyWatchers(this)
}
update () {
if (!this.destroyed) {
watchWithScope(this, () => {
this.watcher(true)
})
}
}
}
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