前端代码
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liumengyu
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<template>
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<div class="header-search">
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<svg-icon class-name="search-icon" icon-class="search" @click.stop="click" />
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<el-dialog
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:visible.sync="show"
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width="600px"
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@close="close"
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@opened="onDialogOpened"
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:show-close="false"
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append-to-body
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>
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<el-input
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v-model="search"
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ref="headerSearchSelectRef"
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size="large"
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@input="querySearch"
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prefix-icon="el-icon-search"
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placeholder="菜单搜索，支持标题、URL模糊查询"
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clearable
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@keyup.enter.native="selectActiveResult"
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@keydown.up.native="navigateResult('up')"
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@keydown.down.native="navigateResult('down')"
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>
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</el-input>
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<div class="result-count" v-if="search && options.length > 0">
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找到 <strong>{{ options.length }}</strong> 个结果
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</div>
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<el-scrollbar wrap-class="right-scrollbar-wrapper">
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<div class="result-wrap">
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<template v-if="options.length > 0">
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<div
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class="search-item"
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v-for="(item, index) in options"
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:key="item.path"
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:class="{ 'is-active': index === activeIndex }"
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:style="activeStyle(index)"
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@mouseenter="activeIndex = index"
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@mouseleave="activeIndex = -1"
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>
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<div class="left">
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<svg-icon class="menu-icon" :icon-class="item.icon" />
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</div>
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<div class="search-info" @click="change(item)">
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<div class="menu-title" v-html="highlightText(item.title.join(' / '))"></div>
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<div class="menu-path" v-html="highlightText(item.path)"></div>
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</div>
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<svg-icon icon-class="enter" v-show="index === activeIndex" />
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</div>
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</template>
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<div class="empty-state" v-else-if="search && options.length === 0">
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<i class="el-icon-search empty-icon"></i>
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<p class="empty-text">未找到 "<strong>{{ search }}</strong>" 相关菜单</p>
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<p class="empty-tip">试试其他关键词或路径</p>
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</div>
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</div>
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</el-scrollbar>
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<div class="search-footer">
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<span class="shortcut-item">
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<kbd>↑</kbd><kbd>↓</kbd> 切换
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</span>
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<span class="shortcut-item">
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<kbd>↵</kbd> 选择
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</span>
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<span class="shortcut-item">
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<kbd>Esc</kbd> 关闭
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</span>
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</div>
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</el-dialog>
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</div>
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</template>
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<script>
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import Fuse from 'fuse.js/dist/fuse.min.js'
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import path from 'path'
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import { isHttp } from '@/utils/validate'
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export default {
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name: 'HeaderSearch',
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data() {
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return {
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search: '',
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options: [],
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searchPool: [],
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activeIndex: -1,
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show: false,
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fuse: undefined
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}
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},
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computed: {
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theme() {
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return this.$store.state.settings.theme
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},
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routes() {
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return this.$store.getters.defaultRoutes
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}
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},
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watch: {
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routes() {
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this.searchPool = this.generateRoutes(this.routes)
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},
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searchPool(list) {
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this.initFuse(list)
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}
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},
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mounted() {
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this.searchPool = this.generateRoutes(this.routes)
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},
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methods: {
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click() {
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this.show = !this.show
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if (this.show) {
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this.options = this.searchPool
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}
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},
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onDialogOpened() {
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this.$nextTick(() => {
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this.$refs.headerSearchSelectRef && this.$refs.headerSearchSelectRef.focus()
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})
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},
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close() {
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this.$refs.headerSearchSelectRef && this.$refs.headerSearchSelectRef.blur()
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this.search = ''
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this.options = this.searchPool
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this.show = false
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this.activeIndex = -1
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},
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change(val) {
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const p = val.path
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const query = val.query
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if (isHttp(val.path)) {
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// http(s):// 路径新窗口打开
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const pindex = p.indexOf('http')
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window.open(p.substr(pindex, p.length), '_blank')
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} else {
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if (query) {
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this.$router.push({ path: p, query: JSON.parse(query) })
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} else {
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this.$router.push(p)
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}
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}
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this.search = ''
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this.options = this.searchPool
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this.$nextTick(() => {
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this.show = false
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})
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},
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initFuse(list) {
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this.fuse = new Fuse(list, {
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shouldSort: true,
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threshold: 0.2,
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minMatchCharLength: 1,
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keys: [{
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name: 'title',
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weight: 0.7
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}, {
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name: 'path',
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weight: 0.3
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}]
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})
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},
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generateRoutes(routes, basePath = '/', prefixTitle = []) {
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let res = []
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for (const router of routes) {
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if (router.hidden) { continue }
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const data = {
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path: !isHttp(router.path) ? path.resolve(basePath, router.path) : router.path,
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title: [...prefixTitle],
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icon: ''
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}
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if (router.meta && router.meta.title) {
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data.title = [...data.title, router.meta.title]
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data.icon = router.meta.icon
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if (router.redirect !== 'noRedirect') {
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res.push(data)
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}
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}
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if (router.query) {
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data.query = router.query
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}
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if (router.children) {
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const tempRoutes = this.generateRoutes(router.children, data.path, data.title)
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if (tempRoutes.length >= 1) {
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res = [...res, ...tempRoutes]
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}
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}
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}
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return res
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},
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querySearch(query) {
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this.activeIndex = -1
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if (query !== '') {
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const q = query.toLowerCase()
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const pathMatches = this.searchPool.filter(item =>
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item.path.toLowerCase().includes(q)
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)
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const fuseMatches = this.fuse.search(query).map(item => item.item)
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const merged = [...pathMatches]
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fuseMatches.forEach(item => {
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if (!merged.find(m => m.path === item.path)) {
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merged.push(item)
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}
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})
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this.options = merged
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} else {
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this.options = this.searchPool
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}
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},
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activeStyle(index) {
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if (index !== this.activeIndex) return {}
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return {
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'background-color': this.theme,
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'color': '#fff'
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}
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},
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navigateResult(direction) {
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if (direction === 'up') {
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this.activeIndex = this.activeIndex <= 0 ? this.options.length - 1 : this.activeIndex - 1
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} else if (direction === 'down') {
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this.activeIndex = this.activeIndex >= this.options.length - 1 ? 0 : this.activeIndex + 1
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}
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},
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selectActiveResult() {
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if (this.options.length > 0 && this.activeIndex >= 0) {
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this.change(this.options[this.activeIndex])
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}
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},
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highlightText(text) {
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if (!text) return ''
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if (!this.search) return text
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const keyword = this.escapeRegExp(this.search)
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const reg = new RegExp(`(${keyword})`, 'gi')
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return text.replace(reg, '<span class="highlight">$1</span>')
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},
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escapeRegExp(str) {
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return str.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')
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}
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}
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}
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</script>
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<style lang='scss' scoped>
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::v-deep {
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.el-dialog__header {
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padding: 6px !important;
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}
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.highlight {
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color: red;
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font-weight: 600;
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}
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.is-active .highlight {
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color: rgba(255, 255, 255, 0.9);
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font-weight: 600;
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}
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}
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.header-search {
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.search-icon {
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cursor: pointer;
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font-size: 18px;
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vertical-align: middle;
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}
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}
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.result-count {
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padding: 6px 16px 0;
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font-size: 12px;
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color: #aaa;
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strong {
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color: red;
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font-weight: 600;
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}
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}
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.result-wrap {
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height: 280px;
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margin: 4px 0;
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.search-item {
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display: flex;
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height: 48px;
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align-items: center;
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padding-right: 10px;
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border-radius: 4px;
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transition: background 0.15s;
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.left {
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width: 60px;
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text-align: center;
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flex-shrink: 0;
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.menu-icon {
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width: 18px;
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height: 18px;
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}
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}
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.search-info {
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padding-left: 5px;
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margin-top: 10px;
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width: 100%;
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display: flex;
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flex-direction: column;
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justify-content: flex-start;
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flex: 1;
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overflow: hidden;
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.menu-title,
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.menu-path {
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height: 20px;
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white-space: nowrap;
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overflow: hidden;
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text-overflow: ellipsis;
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}
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.menu-path {
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color: #ccc;
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font-size: 10px;
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}
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}
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}
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.search-item:hover {
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cursor: pointer;
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}
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.empty-state {
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display: flex;
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flex-direction: column;
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align-items: center;
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justify-content: center;
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height: 100%;
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.empty-icon {
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font-size: 42px;
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color: #e0e0e0;
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margin-bottom: 14px;
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}
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.empty-text {
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font-size: 14px;
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color: #999;
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margin: 0 0 6px;
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strong {
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color: #666;
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}
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}
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.empty-tip {
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font-size: 12px;
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color: #bbb;
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margin: 0;
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}
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}
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}
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.search-footer {
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display: flex;
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align-items: center;
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gap: 28px;
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padding: 10px 20px;
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border-top: 1px solid #f0f0f0;
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color: #999;
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font-size: 12px;
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.shortcut-item {
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display: flex;
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align-items: center;
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gap: 5px;
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}
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kbd {
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display: inline-flex;
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align-items: center;
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justify-content: center;
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min-width: 20px;
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height: 20px;
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padding: 0 5px;
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border: 1px solid #ddd;
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border-radius: 4px;
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background: #f7f7f7;
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color: #555;
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font-size: 11px;
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font-family: inherit;
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line-height: 1;
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box-shadow: 0 1px 0 #ccc;
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}
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}
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</style>
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