Vue에서 탭 구성 요소와 다중 탭 페이지를 구현하는 방법은 무엇입니까?

<template>
  <div>
    <div class="tab-header">
      <div class="tab-item" 
           v-for="(tab, index) in tabs" 
           :key="index"
           :class="{ active: index === currentIndex }" 
           @click="handleTab(index)">
        {{ tab.title }}
      </div>
    </div>
    <div class="tab-content">
      <slot></slot>
    </div>
  </div>
</template>

<script>
export default {
  name: 'Tab',
  props: {
    tabs: {
      type: Array,
      required: true,
    },
    currentIndex: {
      type: Number,
      default: 0,
    },
  },
  methods: {
    handleTab(index) {
      this.$emit('tabchange', index);
    },
  },
};
</script>

<template>
  <div>
    <Tab :tabs="tabs" :currentIndex="currentIndex" @tabchange="handleChange">
      <div v-for="(tab, index) in tabs" :key="index">
        {{ tab.content }}
      </div>
    </Tab>
  </div>
</template>

<script>
import Tab from './Tab.vue';

export default {
  name: 'App',
  components: {
    Tab,
  },
  data() {
    return {
      currentIndex: 0,
      tabs: [
        {
          title: 'tab1',
          content: '这是第一个 tab 页的内容',
        },
        {
          title: 'tab2',
          content: '这是第二个 tab 页的内容',
        },
      ],
    };
  },
  methods: {
    handleChange(index) {
      this.currentIndex = index;
    },
  },
};
</script>

<template>
  <div class="page-container">
    <el-container>
      <el-header>
        <h1>{{ pageTitle }}</h1>
      </el-header>
      <el-container>
        <el-aside style="width: 200px; height: 100%">
          <el-menu
            :default-active="activeMenu"
            @select="handleSelect"
            unique-opened
            :collapse="isCollapse">
            <el-submenu v-for="menuGroup in menuList" :key="menuGroup.name" :index="menuGroup.name">
              <template slot="title">
                <i :class="menuGroup.icon"></i>
                <span>{{ menuGroup.title }}</span>
              </template>
              <el-menu-item v-for="menuItem in menuGroup.children" :key="menuItem.path" :index="menuItem.path">
                <i :class="menuItem.icon"></i>
                <span slot="title">{{ menuItem.title }}</span>
              </el-menu-item>
            </el-submenu>
          </el-menu>
        </el-aside>
        <el-main>
          <router-view/>
        </el-main>
      </el-container>
    </el-container>
  </div>
</template>

<script>
export default {
  name: 'PageLayout',
  data() {
    return {
      pageTitle: '多标签页示例',
      menuList: [
        {
          name: 'group1',
          title: '分组 1',
          icon: 'el-icon-s-home',
          children: [
            {
              title: '页面 1',
              path: '/page1',
              icon: 'el-icon-s-order',
            },
            {
              title: '页面 2',
              path: '/page2',
              icon: 'el-icon-s-data',
            },
          ],
        },
        {
          name: 'group2',
          title: '分组 2',
          icon: 'el-icon-s-management',
          children: [
            {
              title: '页面 3',
              path: '/page3',
              icon: 'el-icon-s-flag',
            },
            {
              title: '页面 4',
              path: '/page4',
              icon: 'el-icon-menu',
            },
          ],
        },
      ],
      activeMenu: '',
      isCollapse: false,
    };
  },
  methods: {
    handleSelect(index) {
      this.activeMenu = index;
      this.$router.push(index);
    },
  },
};
</script>

<template>
  <div class="tab-bar" :class="{ fixed: isFixed }">
    <div class="tab-bar-content">
      <div v-for="(tab, index) in tabs" :key="index" class="tab-item" :class="{ active: currentIndex === index }" @click="handleChange(index)">
        {{ tab.title }}
        <i class="el-icon-close" @click.stop="handleRemoveTab(index)"></i>
      </div>
      <i class="el-icon-circle-plus add-tab-btn" @click.stop="handleAddTab"></i>
    </div>
  </div>
</template>

<script>
export default {
  name: 'TabBar',
  props: {
    tabs: {
      type: Array,
      required: true,
    },
    currentIndex: {
      type: Number,
      default: 0,
    },
    isFixed: {
      type: Boolean,
      default: false,
    },
  },
  methods: {
    handleChange(index) {
      this.$emit('tabchange', index);
    },
    handleAddTab() {
      this.$emit('addtab');
    },
    handleRemoveTab(index) {
      this.$emit('removetab', index);
    },
  },
};
</script>

<template>
  <div class="page-container">
    ...
    <el-main>
      <tab-bar :tabs="tabs" :currentIndex="currentIndex" :isFixed="isFixed" @tabchange="handleChange" @addtab="handleAddTab" @removetab="handleRemoveTab"/>
      <router-view v-if="$route.meta.keepAlive"/>
      <keep-alive>
        <router-view v-if="!$route.meta.keepAlive"/>
      </keep-alive>
    </el-main>
  </div>
</template>

<script>
import TabBar from '../components/TabBar.vue';

export default {
  name: 'PageLayout',
  components: {
    TabBar,
  },
  data() {
    return {
      tabs: [
        {
          title: '首页',
          path: '/',
        },
      ],
      currentIndex: 0,
      isFixed: false,
    };
  },
  created() {
    this.$router.afterEach((to, from) => {
      const index = this.tabs.findIndex(tab => tab.path === to.path);
      if (index !== -1) {
        this.currentIndex = index;
        this.isFixed = false;
      } else {
        this.addTab(to);
      }
    });
  },
  methods: {
    handleChange(index) {
      this.$router.push(this.tabs[index].path);
    },
    handleAddTab() {
      const isExist = this.tabs.find(tab => tab.path === this.$route.path);
      if (!isExist) {
        this.tabs.push({
          title: this.$route.meta.title || '',
          path: this.$route.path,
        });
        this.currentIndex = this.tabs.length - 1;
        this.isFixed = false;
      } else {
        this.currentIndex = this.tabs.indexOf(isExist);
        this.isFixed = false;
      }
      this.$router.push(this.$route.path);
    },
    handleRemoveTab(index) {
      const targetTab = this.tabs[index];
      const targetPath = targetTab.path;
      this.tabs.splice(index, 1);
      if (targetPath === this.$route.path) {
        const lastIndex = this.tabs.length - 1;
        const lastTab = this.tabs[lastIndex];
        this.currentIndex = lastIndex;
        this.$router.push(lastTab.path);
      } else {
        this.currentIndex = this.tabs.findIndex(tab => tab.path === this.$route.path);
      }
    },
  },
};
</script>