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fix(useDefault): 修改数据绑定的逻辑 #1776

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fix(useDefault): 修改数据绑定的逻辑 #1776

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41 changes: 20 additions & 21 deletions src/shared/useDefault/index.ts
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
import { computed, ref, watchEffect, WritableComputedRef } from 'vue';
import { computed, ref, watch, WritableComputedRef } from 'vue';
import { camelCase } from 'lodash-es';

function getDefaultName(key: string): string {
Expand All @@ -24,32 +24,31 @@ function getEventPropsName(eventName: string): string {
export function useDefault<V, T>(props: T, emit: (...args: any[]) => void, key: string, eventName: string) {
const modelValue = 'modelValue';
const defaultName = getDefaultName(String(key));

const isUsedModelValue = props[modelValue] !== undefined;
const isUsedKey = props[key] !== undefined;

const innerValue = ref<V>();

if (isUsedKey) {
innerValue.value = props[key];
} else if (isUsedModelValue) {
innerValue.value = props[modelValue];
} else {
innerValue.value = props[defaultName];
}
watchEffect(() => {
if (isUsedModelValue) {
innerValue.value = props[modelValue];
}
if (isUsedKey) {
innerValue.value = props[key];
}
});
let isUsedModelValue = props[modelValue] !== undefined;
let isUsedKey = props[key] !== undefined;

watch(
[() => props[modelValue], () => props[key]],
(newValue, oldValue) => {
if (newValue[0] !== oldValue[0]) {
isUsedModelValue = true;
innerValue.value = props[modelValue];
} else if (newValue[1] !== oldValue[1]) {
isUsedKey = true;
innerValue.value = props[key];
} else {
innerValue.value = props[defaultName];
}
},
{ immediate: true },
);

function emitEvents<T extends Array<any>>(value: V, ...arg: T) {
const updateKeys = [`update:${key}`];
if (isUsedModelValue) {
updateKeys.push(`update:modelValue`);
updateKeys.push(`update:${modelValue}`);
}
// Props Event exists in Vue3. `props.onChange()` is equal `context.emit('change')`
updateKeys.forEach((updateKey) => {
Expand Down