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+<template>
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+ <el-menu
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+ :default-active="activeMenu"
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+ mode="horizontal"
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+ @select="handleSelect"
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+ >
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+ <template v-for="(item, index) in topMenus">
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+ <el-menu-item :index="item.path" :key="index" v-if="index < visibleNumber"
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+ ><svg-icon :icon-class="item.meta.icon" />
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+ {{ item.meta.title }}</el-menu-item
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+ >
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+ </template>
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+
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+ <!-- 顶部菜单超出数量折叠 -->
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+ <el-submenu index="more" v-if="topMenus.length > visibleNumber">
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+ <template slot="title">更多菜单</template>
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+ <template v-for="(item, index) in topMenus">
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+ <el-menu-item
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+ :index="item.path"
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+ :key="index"
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+ v-if="index >= visibleNumber"
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+ ><svg-icon :icon-class="item.meta.icon" />
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+ {{ item.meta.title }}</el-menu-item
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+ >
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+ </template>
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+ </el-submenu>
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+ </el-menu>
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+</template>
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+
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+<script>
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+import { constantRoutes } from "@/router";
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+
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+export default {
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+ data() {
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+ return {
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+ // 顶部栏初始数
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+ visibleNumber: 5,
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+ // 是否为首次加载
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+ isFrist: false,
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+ };
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+ },
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+ computed: {
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+ // 顶部显示菜单
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+ topMenus() {
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+ return this.routers.map((menu) => ({
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+ ...menu,
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+ children: undefined,
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+ }));
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+ },
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+ // 所有的路由信息
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+ routers() {
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+ return this.$store.state.permission.topbarRouters;
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+ },
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+ // 设置子路由
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+ childrenMenus() {
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+ var childrenMenus = [];
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+ this.routers.map((router) => {
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+ for (var item in router.children) {
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+ if (router.children[item].parentPath === undefined) {
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+ router.children[item].path = router.path + "/" + router.children[item].path;
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+ router.children[item].parentPath = router.path;
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+ }
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+ childrenMenus.push(router.children[item]);
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+ }
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+ });
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+ return constantRoutes.concat(childrenMenus);
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+ },
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+ // 默认激活的菜单
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+ activeMenu() {
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+ const path = this.$route.path;
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+ let activePath = this.routers[0].path;
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+ if (path.lastIndexOf("/") > 0) {
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+ const tmpPath = path.substring(1, path.length);
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+ activePath = "/" + tmpPath.substring(0, tmpPath.indexOf("/"));
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+ } else if ("/index" == path || "" == path) {
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+ if (!this.isFrist) {
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+ this.isFrist = true;
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+ } else {
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+ activePath = "index";
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+ }
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+ }
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+ this.activeRoutes(activePath);
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+ return activePath;
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+ },
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+ },
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+ mounted() {
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+ this.setVisibleNumber();
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+ },
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+ methods: {
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+ // 根据宽度计算设置显示栏数
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+ setVisibleNumber() {
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+ const width = document.body.getBoundingClientRect().width - 200;
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+ const elWidth = this.$el.getBoundingClientRect().width;
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+ const menuItemNodes = this.$el.children;
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+ const menuWidth = Array.from(menuItemNodes).map(
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+ (i) => i.getBoundingClientRect().width
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+ );
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+ this.visibleNumber = (
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+ parseInt(width - elWidth) / parseInt(menuWidth)
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+ ).toFixed(0);
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+ },
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+ // 菜单选择事件
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+ handleSelect(key, keyPath) {
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+ if (key.indexOf("http://") !== -1 || key.indexOf("https://") !== -1) {
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+ // http(s):// 路径新窗口打开
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+ window.open(key, "_blank");
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+ } else {
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+ this.activeRoutes(key);
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+ }
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+ },
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+ // 当前激活的路由
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+ activeRoutes(key) {
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+ var routes = [];
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+ if (this.childrenMenus && this.childrenMenus.length > 0) {
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+ this.childrenMenus.map((item) => {
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+ if (key == item.parentPath || (key == "index" && "" == item.path)) {
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+ routes.push(item);
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+ }
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+ });
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+ }
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+ this.$store.commit("SET_SIDEBAR_ROUTERS", routes);
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+ },
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+ },
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+};
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+</script>
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+
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+<style lang="scss" scoped>
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+.el-menu--horizontal > .el-menu-item {
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+ float: left;
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+ height: 50px;
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+ line-height: 50px;
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+ margin: 0;
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+ border-bottom: 3px solid transparent;
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+ color: #999093;
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+ padding: 0 5px;
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+ margin: 0 10px;
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+}
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+
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+.el-menu--horizontal > .el-menu-item.is-active {
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+ border-bottom: 3px solid #409eff;
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+ color: #303133;
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+}
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+</style>
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RuoYi