<template>
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<el-container class="layout-container flex-column">
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<LayoutHeader />
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<el-container class="layout-mian-height">
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<LayoutAside />
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<div class="flex-column layout-backtop">
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<LayoutTagsView v-if="isTagsview" />
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<LayoutMain ref="layoutMainRef" />
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</div>
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</el-container>
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</el-container>
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</template>
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<script setup lang="ts" name="layoutClassic">
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import { defineAsyncComponent, computed, ref, watch, nextTick, onMounted } from 'vue';
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import { useRoute } from 'vue-router';
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import { storeToRefs } from 'pinia';
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import { useThemeConfig } from '/@/stores/themeConfig';
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// 引入组件
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const LayoutAside = defineAsyncComponent(() => import('/@/layout/component/aside.vue'));
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const LayoutHeader = defineAsyncComponent(() => import('/@/layout/component/header.vue'));
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const LayoutMain = defineAsyncComponent(() => import('/@/layout/component/main.vue'));
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const LayoutTagsView = defineAsyncComponent(() => import('/@/layout/navBars/tagsView/tagsView.vue'));
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// 定义变量内容
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const layoutMainRef = ref<InstanceType<typeof LayoutMain>>();
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const route = useRoute();
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const storesThemeConfig = useThemeConfig();
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const { themeConfig } = storeToRefs(storesThemeConfig);
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// 判断是否显示 tasgview
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const isTagsview = computed(() => {
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return themeConfig.value.isTagsview;
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});
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// 重置滚动条高度，更新子级 scrollbar
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const updateScrollbar = () => {
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layoutMainRef.value?.layoutMainScrollbarRef.update();
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};
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// 重置滚动条高度，由于组件是异步引入的
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const initScrollBarHeight = () => {
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nextTick(() => {
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setTimeout(() => {
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updateScrollbar();
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// '!' not null 断言操作符，不执行运行时检查
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if (layoutMainRef.value) layoutMainRef.value!.layoutMainScrollbarRef.wrapRef.scrollTop = 0;
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}, 500);
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});
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};
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// 页面加载时
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onMounted(() => {
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initScrollBarHeight();
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});
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// 监听路由的变化，切换界面时，滚动条置顶
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watch(
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() => route.path,
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() => {
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initScrollBarHeight();
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}
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);
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// 监听 themeConfig 配置文件的变化，更新菜单 el-scrollbar 的高度
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watch(
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themeConfig,
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() => {
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updateScrollbar();
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},
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{
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deep: true,
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}
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);
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</script>
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