标签导航支持对应路由缓存 #

<template>
  <div class="app-main">
    <!-- vue3 路由缓存 https://next.router.vuejs.org/guide/migration/index.html#router-view-keep-alive-and-transition -->
    <router-view v-slot={Component}>
      <transition name="fade-transform" mode="out-in">
        <keep-alive :include="cachedViews">
          <component :is="Component" :key="key" />
        </keep-alive>
      </transition>
    </router-view>
  </div>
</template>

<script lang="ts">
import { computed, defineComponent } from 'vue'
import { useRoute } from 'vue-router'
import { useStore } from '@/store'

export default defineComponent({
  name: 'AppMain',
  setup() {
    const route = useRoute()
    const store = useStore()
    const key = computed(() => route.path)
    // 缓存路由集合 暂时先是空数组
    const cachedViews = computed(() => store.state.tagsView.cachedViews)
    return {
      key,
      cachedViews
    }
  }
})
</script>

<style lang="scss" scoped>
.app-main {
  /* navbar 50px  */
  min-height: calc(100vh - 50px);
}

.fade-transform-enter-active,
.fade-transform-leave-active {
  transition: all .5s;
}

.fade-transform-enter-from {
  opacity: 0;
  transform: translateX(-30px);
}

.fade-transform-leave-to {
  opacity: 0;
  transform: translateX(30px);
}
</style>

<template>
  <div>
    <el-dropdown trigger="click" @command="handleSize">
      <div>
        <svg-icon class-name="size-icon" icon-class="size"></svg-icon>
      </div>
      <template #dropdown>
        <el-dropdown-menu>
          <el-dropdown-item
            v-for="item in sizeOptions"
            :key="item.value"
            :command="item.value"
            :disabled="item.value === size"
          >
            {{ item.label }}
          </el-dropdown-item>
        </el-dropdown-menu>
      </template>
    </el-dropdown>
  </div>
</template>

<script lang="ts">
import { Size } from '@/plugins/element'
import {
  defineComponent,
  ref,
  getCurrentInstance,
  ComponentInternalInstance,
  ComponentPublicInstance,
  computed
} from 'vue'
import { useRoute, useRouter } from 'vue-router'
import { useStore } from '@/store'
import { nextTick } from 'process'

export default defineComponent({
  name: 'SizeSelect',
  setup() {
    const store = useStore()
    const route = useRoute()
    const router = useRouter()
    const { proxy } = getCurrentInstance() as ComponentInternalInstance
    // store中获取size
    const size = computed(() => store.getters.size)
    // element size 选项
    const sizeOptions = ref([
      { label: 'Default', value: 'default' },
      { label: 'Medium', value: 'medium' },
      { label: 'Small', value: 'small' },
      { label: 'Mini', value: 'mini' }
    ])

    // 刷新当前路由
    const refreshView = () => {
      // 需要清除路由缓存 否则size配置改变后组件size状态被缓存不更新
      store.dispatch('tagsView/delAllCachedViews')
      const { fullPath } = route
      nextTick(() => {
        // 跳转到重定向中间页 实现当前路由刷新
        router.replace({
          path: '/redirect' + fullPath
        })
      })
    }

    // command 获取点击按钮的command属性值 作为size值
    const handleSize = (command: Size) => {
      // 修改element-plus组件尺寸
      (proxy as ComponentPublicInstance).$ELEMENT.size = command
      // 更新store
      store.dispatch('app/setSize', command)
      // 切换size需要刷新路由才能生效
      refreshView()
      proxy?.$message.success({
        type: 'success',
        message: 'Switch Size Success'
      })
    }

    return {
      sizeOptions,
      size,
      handleSize
    }
  }
})
</script>

<style lang="scss">
  .size-icon {
    font-size: 18px;
  }
</style>