实现思路及细节
1、利用前面博客所讲的Vuex的知识;定义几个变量
Options:存放tab页对象的容器(主要是路由路径以及tab页的名字)
activeIndex:被激活的tab页路由路径
showName:tab页的标题
Role:用来区分是否是因为左侧菜单被点击造成的路由路径发生改变;
是:pass;不是:nopass
2、左侧导航菜单绑定点击事件
将被点击的菜单名称存放到Vuex中,供路由路径变化监听时,tab页标题显示;
标记一下role为pass,到时新增tab页的时候需要作为判断依据
3、右侧对tab页进行操作
Tab页的点击(切换到被点击的tab页完成路由跳转;标记一下role为nopass,到时新增tab页的时候需要作为判断依据;);
Tab页的移除(删除指定的tab页对象;如果删除的tab页对象处于选中状态,需要将选中状态的下标移到最后一个,因为原来选中的tab页已经删除了;标记一下role为nopass,到时新增tab页的时候需要作为判断依据;))
4、监听路由路径变化
点亮已经存在的tab页(Vuex中showName与option中的哪个tab页对象的name相同,那么就点亮哪一个)
新增tab页(首先路由路径的变化是因为左侧栏的点击,其次要option中不存在的tab页对象)
效果图
State.js
export default{
resturntName:'胡歌直播',
verificationJwt:null,//这是用来保存用户等登录验证码jwt身份识别的
options: [],//存放tab页的容器
activeIndex: '',//激活的tab页路由路径
showName:'show',//tab页的标题
role:""//用来区分是否是因为左侧菜单被点击造成的路由路径发生改变,是:pass;不是:nopass
}
Mutations.js
export default {
// type(事件类型):用于赋值改变state中的数据,可以理解为set方法
// payload:官方给它还取了一个高大上的名字:载荷,其实就是一个保存要传递参数的容器
setResturantName: (state,payload)=>{
state.resturntName = payload.resturntName;
},
setVerificationJwt: (state, payload) => {
state.verificationJwt = payload.verificationJwt;
},
// 添加tabs(data包含了路由路径跟tab页名字)
add_tabs(state, data) {
this.state.options.push(data);
},
// 删除tabs (route是路由路径)
delete_tabs(state, route) {
let index = 0;
for (let option of state.options) {
if (option.route === route) {
break;
}
index++;
}
this.state.options.splice(index, 1); //删除options里面下标为Index的一个数
},
// 设置当前激活的tab
set_active_index(state, index) {
this.state.activeIndex = index;
},
//设置tab页显示标题
set_showName(state, name) {
this.state.showName = name;
},
set_role(state, role) {
this.state.role = role;
}
}
Getters.js
export default{
getResuletName:(state)=>{
return state.resturntName;
},
getShowName:(state) => {
return state.showName;
},
getOptions:(state) => {
return state.options;
},
getRole:(state) =>{
return state.role;
}
}
LeftNav.vue
<template> <el-menu router :default-active="$route.path" class="el-menu-vertical-demo" background-color="#334157" text-color="#fff" active-text-color="#ffd04b" :collapse="leftCollapsed"> <!-- <el-menu default-active="2" :collapse="collapsed" collapse-transition router :default-active="$route.path" unique-opened class="el-menu-vertical-demo" background-color="#334157" text-color="#fff" active-text-color="#ffd04b"> --> <div class="logobox"> <img class="logoimg" src="../assets/img/logo.png" alt=""> </div> <el-submenu :index="'id_'+m.treeNodeId" v-for="m in menus"> <template slot="title"> <i :class="m.icon"></i> <span>{{m.treeNodeName}}</span> </template> <el-menu-item :key="'id_'+m2.treeNodeId" :index="m2.url" v-for="m2 in m.children" @click="showName(m2.treeNodeName)"> <i :class="m2.icon"></i> <span>{{m2.treeNodeName}}</span> </el-menu-item> </el-submenu> </el-menu> </template> <script> export default { name: 'LeftAside', props: ['leftCollapsed'], data: function() { return { menus:[] } }, computed: { showLeftAside: function() { return this.leftCollapsed; } }, //加载表格数据 created(){ let url = this.axios.urls.SYSTEM_MENU_TREE; this.axios.post(url,{} ).then(resp => { //nsole.log(resp); this.menus=resp.data.result; }).catch(resp => {}); }, methods: { showName(name) { // 把菜单名称放进去,当成tab页的名称 this.$store.commit('set_showName', name) this.$store.commit('set_role', "pass"); } } } </script> <style> .el-menu-vertical-demo:not(.el-menu--collapse) { width: 240px; min-height: 400px; } .el-menu-vertical-demo:not(.el-menu--collapse) { border: none; text-align: left; } .el-menu-item-group__title { padding: 0px; } .el-menu-bg { background-color: #1f2d3d !important; } .el-menu { border: none; } .logobox { height: 40px; line-height: 40px; color: #9d9d9d; font-size: 20px; text-align: center; padding: 20px 0px; } .logoimg { height: 40px; } </style>
Main.vue
<template> <el-container class="main-container"> <el-aside :class="showLeftAside"> <LeftAside :left-collapsed="collapsed"></LeftAside> </el-aside> <el-container> <el-header class="main-header"> <TopNav @topnav-collapsed="openCollapsed"></TopNav> </el-header> <div class="template-tabs"> <el-tabs v-model="activeIndex" type="border-card" closable @tab-click="tabClick" @tab-remove="tabRemove"> <el-tab-pane :key="item.name" v-for="(item, index) in options" :label="item.name" :name="item.route"> </el-tab-pane> </el-tabs> </div> <el-main class="main-center"> <router-view></router-view> </el-main> </el-container> </el-container> </template> <script> // 实现折叠效果 // 点击TopNav折叠LeftAside // // 注: // 1) 父组件Main.Vue // 2) 子组件TopNav.vue和Leftside.vue // // 思路: // 1)点击TopNav->Mani->LefrtAside // 2)TopNav->Mani :子组件到父组件 使用时间this.$emit() // 3)Mani->LefrtAside 父组件到子组件 使用prop // 导入组件 import TopNav from '@/components/TopNav.vue' import LeftAside from '@/components/LeftAside.vue' // 导出模块 export default { name:'Main', data:function(){ return{ //asideClass:'main-aside', collapsed:false }; }, methods:{ openCollapsed:function(collapsed){ this.collapsed=collapsed; console.log(this.collapsed); }, // tab切换时,动态的切换路由 tabClick(tab) { // v-model="activeIndex"是路由路径 let path = this.activeIndex; this.$router.push({ path: path }); this.$store.commit('set_role',"nopass"); }, tabRemove(targetName) { // console.log(targetName);targetName是路由路径 this.$store.commit('set_role',"nopass"); // let tabs = this.editableTabs; this.$store.commit('delete_tabs', targetName); // 如果激活tab页被关闭,那么需要激活别的tab页,最后一个tab页被关闭,那么跳转主界面 if (this.activeIndex === targetName) { // 设置当前激活的路由 if (this.options && this.options.length >= 1) { this.$store.commit('set_active_index', this.options[this.options.length - 1].route); this.$router.push({ path: this.activeIndex }); } else { this.$router.push({ path: '/Main' }); } } } }, watch: { '$route'(to) { // 只要路由发生改变,就会触发此事件(点击左侧菜单时会触发,删除右侧tab页会触发,切换右侧已存在的tab页会触发) let role=this.$store.state.role; let showName=this.$store.getters.getShowName let flag = false;//判断是否页面中是否已经存在该路由下的tab页 //options记录当前页面中已存在的tab页 for (let option of this.options) { //用名称匹配,如果存在即将对应的tab页设置为active显示桌面前端 if (option.name === showName) { flag = true; this.$store.commit('set_active_index', to.path); break; } } //如果不存在,则新增tab页,再将新增的tab页设置为active显示在桌面前端 // if(role!='nopass'){} if(role=='pass'){ if (!flag) { this.$store.commit('add_tabs', { route: to.path, name: showName}); this.$store.commit('set_active_index', to.path); } } } }, components:{ TopNav, LeftAside }, computed:{ showLeftAside:function(){ return !this.collapsed?'main-aside':'main-aside-collapsed ' }, options() { return this.$store.state.options; }, //动态设置及获取当前激活的tab页 activeIndex: { get() { return this.$store.state.activeIndex; }, set(val) { this.$store.commit('set_active_index', val); } } } }; </script> <style type="text/css"> .el-tabs--border-card>.el-tabs__content { padding: 0px; } </style> <style scoped> .main-container { height: 100%; width: 100%; box-sizing: border-box; } .main-aside-collapsed { /* 在CSS中,通过对某一样式声明! important ,可以更改默认的CSS样式优先级规则,使该条样式属性声明具有最高优先级 */ width: 64px !important; height: 100%; background-color: #334157; margin: 0px; } .main-aside { width: 240px !important; height: 100%; background-color: #334157; margin: 0px; } .main-header, .main-center { padding: 0px; border-left: 2px solid #333; } </style>
子tab页
添加一个子tab页数据
相关代码
<template> <div> <el-tabs :tab-position="tabPosition" style="height: 200px;"> <el-tab-pane label="游客评论">游客评论管理</el-tab-pane> <el-tab-pane label="普通会员评论">普通会员评论管理</el-tab-pane> <el-tab-pane label="VIP会员评论">VIP会员评论管理</el-tab-pane> <el-tab-pane label="SVIP会员评论">SVIP会员评论管理</el-tab-pane> </el-tabs> </div> </template> <script> export default { data() { return { tabPosition: '评论管理' }; } } </script> <style> </style>
然后自己配置一下路由router/index.js
import Vue from 'vue'
import Router from 'vue-router'
import Login from '@/views/Login'
import Register from '@/views/Register'
import Main from '@/views/Main'
import Articles from '@/views/sys/Articles'
//vuex
import VuexPage1 from '@/views/sys/VuexPage1'
import VuexPage2 from '@/views/sys/VuexPage2'
import Comment from '@/views/sys/Comment'
Vue.use(Router)
export default new Router({
routes: [{
path: '/',
name: 'Login',
component: Login
},
{
path: '/Register',
name: 'Register',
component: Register
},
{
path: '/Main',
name: 'Main',
component: Main,
children: [{
path: '/sys/Articles',
name: 'Articles',
component: Articles
},
{
path: '/sys/VuexPage2',
name: 'VuexPage2',
component: VuexPage2
},
{
path: '/sys/VuexPage1',
name: 'VuexPage1',
component: VuexPage1
},
{
path: '/sys/Comment',
name: 'Comment',
component: Comment
},
]
}
]
})
效果如下