Vue實現多頁簽組件
直接看效果,增加瞭右鍵菜單,分別有重新加載、關閉左邊、關閉右邊、關閉其他功能。
也可以到我的github上看看代碼(如果覺得這個組件有用的話,別忘瞭順手給個小星星)
代碼:https://github.com/Caijt/VuePageTab
演示:https://caijt.github.io/VuePageTab/
我這個多頁簽組件裡面的刪除緩存的方法不是使用keep-alive組件自帶的include、exculde結合的效果,而是使用暴力刪除緩存的方法,這個在上個博客中也有提到,用這種方法的話,可以實現更完整的多頁簽功能,例如同個路由可以根據參數的不同同時打開不同的頁簽,也能不用去寫那些路由的name值。
先直接看組件代碼(裡面用瞭一些element-ui的組件,如果你們不用element-ui的話。可以去掉,自己實現)
<template> <div class="__common-layout-pageTabs"> <el-scrollbar> <div class="__tabs"> <div class="__tab-item" v-for="item in openedPageRouters" :class="{ '__is-active': item.fullPath == $route.fullPath, }" :key="item.fullPath" @click="onClick(item)" @contextmenu.prevent="showContextMenu($event, item)" > {{ item.meta.title }} <span class="el-icon-close" @click.stop="onClose(item)" @contextmenu.prevent.stop="" :style="openedPageRouters.length <= 1 ? 'width:0;' : ''" ></span> </div> </div> </el-scrollbar> <div v-show="contextMenuVisible"> <ul :style="{ left: contextMenuLeft + 'px', top: contextMenuTop + 'px' }" class="__contextmenu" > <li> <el-button type="text" @click="reload()" size="mini"> 重新加載 </el-button> </li> <li> <el-button type="text" @click="closeOtherLeft" :disabled="false" size="mini" >關閉左邊</el-button > </li> <li> <el-button type="text" @click="closeOtherRight" :disabled="false" size="mini" >關閉右邊</el-button > </li> <li> <el-button type="text" @click="closeOther" size="mini" >關閉其他</el-button > </li> </ul> </div> </div> </template> <script> export default { props: { keepAliveComponentInstance: {}, //keep-alive控件實例對象 blankRouteName: { type: String, default: "blank", }, //空白路由的name值 }, data() { return { contextMenuVisible: false, //右鍵菜單是否顯示 contextMenuLeft: 0, //右鍵菜單顯示位置 contextMenuTop: 0, //右鍵菜單顯示位置 contextMenuTargetPageRoute: null, //右鍵所指向的菜單路由 openedPageRouters: [], //已打開的路由頁面 }; }, watch: { //當路由變更時,執行打開頁面的方法 $route: { handler(v) { this.openPage(v); }, immediate: true, }, }, mounted() { //添加點擊關閉右鍵菜單 window.addEventListener("click", this.closeContextMenu); }, destroyed() { window.removeEventListener("click", this.closeContextMenu); }, methods: { //打開頁面 openPage(route) { if (route.name == this.blankRouteName) { return; } let isExist = this.openedPageRouters.some( (item) => item.fullPath == route.fullPath ); if (!isExist) { let openedPageRoute = this.openedPageRouters.find( (item) => item.path == route.path ); //判斷頁面是否支持不同參數多開頁面功能,如果不支持且已存在path值一樣的頁面路由,那就替換它 if (!route.meta.canMultipleOpen && openedPageRoute != null) { this.delRouteCache(openedPageRoute.fullPath); this.openedPageRouters.splice( this.openedPageRouters.indexOf(openedPageRoute), 1, route ); } else { this.openedPageRouters.push(route); } } }, //點擊頁面標簽卡時 onClick(route) { if (route.fullPath !== this.$route.fullPath) { this.$router.push(route.fullPath); } }, //關閉頁面標簽時 onClose(route) { let index = this.openedPageRouters.indexOf(route); this.delPageRoute(route); if (route.fullPath === this.$route.fullPath) { //刪除頁面後,跳轉到上一頁面 this.$router.replace( this.openedPageRouters[index == 0 ? 0 : index - 1] ); } }, //右鍵顯示菜單 showContextMenu(e, route) { this.contextMenuTargetPageRoute = route; this.contextMenuLeft = e.layerX; this.contextMenuTop = e.layerY; this.contextMenuVisible = true; }, //隱藏右鍵菜單 closeContextMenu() { this.contextMenuVisible = false; this.contextMenuTargetPageRoute = null; }, //重載頁面 reload() { this.delRouteCache(this.contextMenuTargetPageRoute.fullPath); if (this.contextMenuTargetPageRoute.fullPath === this.$route.fullPath) { this.$router.replace({ name: this.blankRouteName }).then(() => { this.$router.replace(this.contextMenuTargetPageRoute); }); } }, //關閉其他頁面 closeOther() { for (let i = 0; i < this.openedPageRouters.length; i++) { let r = this.openedPageRouters[i]; if (r !== this.contextMenuTargetPageRoute) { this.delPageRoute(r); i--; } } if (this.contextMenuTargetPageRoute.fullPath != this.$route.fullPath) { this.$router.replace(this.contextMenuTargetPageRoute); } }, //根據路徑獲取索引 getPageRouteIndex(fullPath) { for (let i = 0; i < this.openedPageRouters.length; i++) { if (this.openedPageRouters[i].fullPath === fullPath) { return i; } } }, //關閉左邊頁面 closeOtherLeft() { let index = this.openedPageRouters.indexOf( this.contextMenuTargetPageRoute ); let currentIndex = this.getPageRouteIndex(this.$route.fullPath); if (index > currentIndex) { this.$router.replace(this.contextMenuTargetPageRoute); } for (let i = 0; i < index; i++) { let r = this.openedPageRouters[i]; this.delPageRoute(r); i--; index--; } }, //關閉右邊頁面 closeOtherRight() { let index = this.openedPageRouters.indexOf( this.contextMenuTargetPageRoute ); let currentIndex = this.getPageRouteIndex(this.$route.fullPath); for (let i = index + 1; i < this.openedPageRouters.length; i++) { let r = this.openedPageRouters[i]; this.delPageRoute(r); i--; } if (index < currentIndex) { this.$router.replace(this.contextMenuTargetPageRoute); } }, //刪除頁面 delPageRoute(route) { let routeIndex = this.openedPageRouters.indexOf(route); if (routeIndex >= 0) { this.openedPageRouters.splice(routeIndex, 1); } this.delRouteCache(route.fullPath); }, //刪除頁面緩存 delRouteCache(key) { let cache = this.keepAliveComponentInstance.cache; let keys = this.keepAliveComponentInstance.keys; for (let i = 0; i < keys.length; i++) { if (keys[i] == key) { keys.splice(i, 1); if (cache[key] != null) { delete cache[key]; } break; } } }, }, }; </script> <style lang="scss"> .__common-layout-pageTabs { .__contextmenu { // width: 100px; margin: 0; border: 1px solid #e4e7ed; background: #fff; z-index: 3000; position: absolute; list-style-type: none; padding: 5px 0; border-radius: 4px; font-size: 14px; color: #333; box-shadow: 1px 1px 3px 0 rgba(0, 0, 0, 0.1); li { margin: 0; padding: 0px 15px; &:hover { background: #f2f2f2; cursor: pointer; } button { color: #2c3e50; } } } $c-tab-border-color: #dcdfe6; position: relative; &::before { content: ""; border-bottom: 1px solid $c-tab-border-color; position: absolute; left: 0; right: 0; bottom: 0; height: 100%; } .__tabs { display: flex; .__tab-item { white-space: nowrap; padding: 8px 6px 8px 18px; font-size: 12px; border: 1px solid $c-tab-border-color; border-left: none; border-bottom: 0px; line-height: 14px; cursor: pointer; transition: color 0.3s cubic-bezier(0.645, 0.045, 0.355, 1), padding 0.3s cubic-bezier(0.645, 0.045, 0.355, 1); &:first-child { border-left: 1px solid $c-tab-border-color; border-top-left-radius: 2px; margin-left: 10px; } &:last-child { border-top-right-radius: 2px; margin-right: 10px; } &:not(.__is-active):hover { color: #409eff; .el-icon-close { width: 12px; margin-right: 0px; } } &.__is-active { padding-right: 12px; border-bottom: 1px solid #fff; color: #409eff; .el-icon-close { width: 12px; margin-right: 0px; margin-left: 2px; } } .el-icon-close { width: 0px; height: 12px; overflow: hidden; border-radius: 50%; font-size: 12px; margin-right: 12px; transform-origin: 100% 50%; transition: all 0.3s cubic-bezier(0.645, 0.045, 0.355, 1); vertical-align: text-top; &:hover { background-color: #c0c4cc; color: #fff; } } } } } </style>
這個組件它需要兩個屬性,一個是keepAliveComponentInstance(keep-alive的控件實例對象),blankRouteName(空白路由的名稱)
為什麼我需要keep-alive的控件實例對象呢,因為這個對象裡面有兩個屬性,一個是cache,一個是keys,存儲著keep-alive的緩存的數據,有瞭這個對象,我就能在頁簽關閉時手動刪除緩存。那這個對象怎麼獲取呢,如下所示,在keep-alive所在的父頁面上的mounted事件上進行獲取(如果keep-alive跟多頁簽組件不在同一個父頁面,那可能就得借用vuex來傳值瞭)
<template> <div id="app"> <page-tabs :keep-alive-component-instance="keepAliveComponentInstance" /> <div ref="keepAliveContainer"> <keep-alive> <router-view :key="$route.fullPath" /> </keep-alive> </div> </div> </template> <script> import pageTabs from "./components/pageTabs.vue"; export default { name: "App", components: { pageTabs, }, mounted() { if (this.$refs.keepAliveContainer) { this.keepAliveComponentInstance = this.$refs.keepAliveContainer.childNodes[0].__vue__;//獲取keep-alive的控件實例對象 } }, data() { return { keepAliveComponentInstance: null, }; } }; </script>
而空白路由的名稱,是幹什麼,主要我要實現刷新當前頁面的功能,我們知道vue是不允許跳轉到當前頁面,那麼我就想我先跳轉到別的頁面,再跳轉回回來的頁面,不就也實現刷新的效果瞭。(當然我用的是relpace,所以不會產生歷史記錄)
註:這個空白路由並不是固定定義在根路由上,需根據多頁簽組件所在位置,假如你有一個根router-view,還有一個佈局組件,這個組件裡面也有一個子router-view,多頁簽組件就在這個佈局組件裡,那麼空白路由就需定義在佈局組件對應的路由的children裡面瞭
還有這個組件會根據路由對象的meta對象進行不同的配置,如下所示
let router = new Router({ routes: [ //這個是空白頁面,重新加載當前頁面會用到 { name: "blank", path: "/blank", }, { path: "/a", component: A, meta: { title: "A頁面", //頁面標題 canMultipleOpen: true //支持根據參數不同多開不同頁簽,如果你需要/a跟/a?v=123都分別打開兩個頁簽,請設置為true,否則就隻會顯示一個頁簽,後打開的會替換到前打開的頁簽 } } }
以上就是Vue實現多頁簽組件的詳細內容,更多關於Vue實現多頁簽組件的資料請關註WalkonNet其它相關文章!
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