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39 lines
1.1 KiB
TypeScript
39 lines
1.1 KiB
TypeScript
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import type { TourProps } from './interface';
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import type { Ref } from 'vue';
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import { ref, computed, watch } from 'vue';
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interface Props {
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defaultType?: Ref<string>;
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steps?: Ref<TourProps['steps']>;
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current?: Ref<number>;
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defaultCurrent?: Ref<number>;
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}
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/**
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* returns the merged type of a step or the default type.
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*/
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const useMergedType = ({ defaultType, steps, current, defaultCurrent }: Props) => {
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const innerCurrent = ref(defaultCurrent?.value);
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const mergedCurrent = computed(() => current?.value);
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watch(
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mergedCurrent,
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val => {
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innerCurrent.value = val ?? defaultCurrent?.value;
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},
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{ immediate: true },
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);
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const updateInnerCurrent = (val: number) => {
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innerCurrent.value = val;
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};
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const innerType = computed(() => {
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return typeof innerCurrent.value === 'number'
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? steps && steps.value?.[innerCurrent.value]?.type
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: defaultType?.value;
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});
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const currentMergedType = computed(() => innerType.value ?? defaultType?.value);
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return { currentMergedType, updateInnerCurrent };
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};
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export default useMergedType;
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