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elk/composables/magickeys.ts

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2023-03-08 04:32:21 +09:00
import type { ComputedRef } from 'vue'
// TODO: consider to allow combinations similar to useMagicKeys using proxy?
// e.g. `const magicSequence = useMagicSequence()`
// `magicSequence['Shift+Ctrl+A']`
// `const { Ctrl_A_B } = useMagicSequence()`
/**
* source: inspired by https://github.com/vueuse/vueuse/issues/427#issuecomment-815619446
* @param keys ordered list of keys making up the sequence
*/
export function useMagicSequence(keys: string[]): ComputedRef<boolean> {
const magicKeys = useMagicKeys()
const success = ref(false)
const i = ref(0)
let down = false
watch(
() => magicKeys.current,
() => {
if (magicKeys[keys[i.value]].value && !down) {
down = true
i.value += 1
}
else if (i.value > 0 && !magicKeys[keys[i.value - 1]].value && down) {
down = false
}
else {
i.value = 0
down = false
success.value = false
}
if (i.value >= keys.length && !down) {
i.value = 0
down = false
success.value = true
}
}, {
deep: true,
})
return computed(() => success.value)
}