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klp-oa/klp-ui/src/components/MemoInput/index.vue

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<template>
<el-autocomplete class="inline-input" v-model="inputValue" :fetch-suggestions="querySearch" placeholder="请输入内容"
:trigger-on-focus="triggerMode === 'focus'" @select="handleSelect" @change="handleInputChange"
clearable></el-autocomplete>
</template>
<script>
export default {
name: 'LocalStorageAutocomplete',
props: {
// localStorage 存储键名,必填
value: {
type: String,
default: ''
},
storageKey: {
type: String,
required: true,
validator: (value) => value.trim() !== '' // 校验非空
},
// 最大缓存数量默认100条
maxCacheCount: {
type: Number,
default: 100,
validator: (value) => value > 0 // 校验正整数
},
// 匹配规则start-前缀匹配contain-包含匹配,默认前缀匹配
matchRule: {
type: String,
default: 'start',
validator: (value) => ['start', 'contain'].includes(value)
},
// 触发模式focus-激活即列出input-输入后匹配默认focus
triggerMode: {
type: String,
default: 'focus',
validator: (value) => ['focus', 'input'].includes(value)
}
},
data() {
return {
inputValue: '',
// 缓存历史列表(格式:[{value: 'xxx'}, ...]
historyList: []
};
},
computed: {
innerKey() {
if (!this.storageKey) {
throw new Error('storageKey is required');
}
return 'mono-' + this.storageKey;
}
},
watch: {
value: {
handler(newVal, oldVal) {
if (newVal !== oldVal) {
this.inputValue = newVal;
}
},
immediate: true
}
},
mounted() {
// 初始化时从localStorage读取历史记录
this.initHistoryList();
},
methods: {
/**
* 从localStorage初始化历史列表
*/
initHistoryList() {
const storedData = localStorage.getItem(this.innerKey);
this.historyList = storedData ? JSON.parse(storedData) : [];
},
/**
* 搜索查询方法Element UI autocomplete 要求的格式
* @param {string} queryString - 输入的查询字符串
* @param {function} cb - 回调函数返回匹配结果
*/
querySearch(queryString, cb) {
let results = [...this.historyList]; // 深拷贝避免修改原数组
// 根据查询字符串过滤结果
if (queryString) {
const lowerQuery = queryString.toLowerCase();
results = results.filter(item => {
const lowerValue = item.value.toLowerCase();
// 前缀匹配或包含匹配
return this.matchRule === 'start'
? lowerValue.indexOf(lowerQuery) === 0
: lowerValue.includes(lowerQuery);
});
}
cb(results); // 回调返回匹配结果
},
/**
* 选中建议项时的处理
* @param {object} item - 选中的项 {value: 'xxx'}
*/
handleSelect(item) {
this.cacheInputValue(item.value);
this.inputValue = item.value;
// 触发自定义事件,通知父组件选中结果
this.$emit('input', item.value);
},
/**
* 输入框内容变化时的处理比如手动输入后回车/失焦
* @param {string} value - 输入框的值
*/
handleInputChange(value) {
if (value && value.trim() !== '') {
this.cacheInputValue(value.trim());
// 触发自定义事件,通知父组件输入结果
this.$emit('input', value.trim());
}
},
/**
* 缓存输入值到localStorage
* @param {string} value - 要缓存的值
*/
cacheInputValue(value) {
// 去重:如果已存在则移除原记录(保证最新输入在最前面)
this.historyList = this.historyList.filter(item => item.value !== value);
// 添加新记录到头部
this.historyList.unshift({ value });
// 限制最大缓存数量
if (this.historyList.length > this.maxCacheCount) {
this.historyList = this.historyList.slice(0, this.maxCacheCount);
}
// 保存到localStorage
localStorage.setItem(this.innerKey, JSON.stringify(this.historyList));
},
/**
* 清空历史记录提供给父组件调用的方法
*/
clearHistory() {
this.historyList = [];
localStorage.removeItem(this.innerKey);
this.inputValue = '';
this.$emit('clear');
}
}
};
</script>
<style scoped>
.demo-autocomplete {
margin-bottom: 20px;
}
.sub-title {
margin-bottom: 10px;
color: #666;
font-size: 14px;
}
.inline-input {
width: 100%;
}
</style>