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component.ts
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component.ts
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import { h, ref, defineComponent, watch, onUnmounted } from 'vue-demi'
import { createFocusTrap } from 'focus-trap'
import type { FocusTrap } from 'focus-trap'
import { unrefElement } from '@vueuse/core'
import { RenderableComponent } from '@vueuse/core/types'
export const UseFocusTrap = defineComponent<RenderableComponent>({
name: 'UseFocusTrap',
props: ['as'] as unknown as undefined,
setup(props, { slots }) {
let trap: undefined | FocusTrap
const target = ref()
const activate = () => trap && trap.activate()
const deactivate = () => trap && trap.deactivate()
watch(
() => unrefElement(target),
(el) => {
if (!el)
return
trap = createFocusTrap(el, {})
activate()
}, { flush: 'post' })
// Cleanup on unmount
onUnmounted(() => deactivate())
return () => {
if (slots.default)
return h(props.as || 'div', { ref: target }, slots.default())
}
},
})