elk/composables/vue.ts
2023-01-07 02:43:49 +08:00

46 lines
1.4 KiB
TypeScript

import type { ComponentInternalInstance } from 'vue'
import { onActivated, onDeactivated, ref } from 'vue'
import type { ActiveHeadEntry, HeadEntryOptions, UseHeadInput } from '@vueuse/head'
import type { HeadAugmentations } from '@nuxt/schema'
import { useHead } from '#head'
export const isHydrated = ref(false)
/**
* ### Whether the current component is running in the background
*
* for handling problems caused by the keepalive function
*/
export function useDeactivated() {
const deactivated = ref(false)
onActivated(() => deactivated.value = false)
onDeactivated(() => deactivated.value = true)
return deactivated
}
/**
* ### When the component is restored from the background
*
* for handling problems caused by the keepalive function
*/
export function onReactivated(hook: Function, target?: ComponentInternalInstance | null): void {
const initial = ref(true)
onActivated(() => {
if (initial.value)
return
hook()
}, target)
onDeactivated(() => initial.value = false)
}
// TODO: Workaround for Nuxt bug: https://github.com/elk-zone/elk/pull/199#issuecomment-1329771961
export function useHeadFixed<T extends HeadAugmentations>(input: UseHeadInput<T>, options?: HeadEntryOptions): ActiveHeadEntry<UseHeadInput<T>> | void {
const deactivated = useDeactivated()
return useHead(() => {
if (deactivated.value)
return {}
return resolveUnref(input)
}, options)
}