td_official/src/views/system/menu/index.vue

<template>
  <div class="p-2">
    <transition :enter-active-class="proxy?.animate.searchAnimate.enter" :leave-active-class="proxy?.animate.searchAnimate.leave">
      <div v-show="showSearch" class="mb-[10px]">
        <el-card shadow="hover">
          <el-form ref="queryFormRef" :model="queryParams" :inline="true">
            <el-form-item label="菜单名称" prop="menuName">
              <el-input v-model="queryParams.menuName" placeholder="请输入菜单名称" clearable @keyup.enter="handleQuery" />
            </el-form-item>
            <el-form-item label="状态" prop="status">
              <el-select v-model="queryParams.status" placeholder="菜单状态" clearable>
                <el-option v-for="dict in sys_normal_disable" :key="dict.value" :label="dict.label" :value="dict.value" />
              </el-select>
            </el-form-item>
            <el-form-item>
              <el-button type="primary" icon="Search" @click="handleQuery">搜索</el-button>
              <el-button icon="Refresh" @click="resetQuery">重置</el-button>
            </el-form-item>
          </el-form>
        </el-card>
      </div>
    </transition>

    <el-card shadow="hover">
      <template #header>
        <el-row :gutter="10">
          <el-col :span="1.5">
            <el-button v-hasPermi="['system:menu:add']" type="primary" plain icon="Plus" @click="handleAdd()">新增 </el-button>
          </el-col>
          <el-col :span="1.5">
            <el-button type="info" plain icon="Sort" @click="handleToggleExpandAll">展开/折叠</el-button>
          </el-col>
          <right-toolbar v-model:show-search="showSearch" @query-table="getList"></right-toolbar>
        </el-row>
      </template>

      <!-- 关键修改：开启lazy模式，使用本地数据筛选子节点 -->
      <el-table
        ref="menuTableRef"
        v-loading="loading"
        :data="menuList"
        row-key="menuId"
        :tree-props="{ children: 'children', hasChildren: 'hasChildren' }"
        :default-expand-all="isExpandAll"
        lazy
        :load="loadChildren"
        :has-children="hasChildren"
      >
        <el-table-column prop="menuName" label="菜单名称" :show-overflow-tooltip="true" width="160"></el-table-column>
        <el-table-column prop="icon" label="图标" align="center" width="100">
          <template #default="scope">
            <svg-icon :icon-class="scope.row.icon" />
          </template>
        </el-table-column>
        <el-table-column prop="orderNum" label="排序" width="60"></el-table-column>
        <el-table-column prop="perms" label="权限标识" :show-overflow-tooltip="true"></el-table-column>
        <el-table-column prop="component" label="组件路径" :show-overflow-tooltip="true"></el-table-column>
        <el-table-column prop="status" label="状态" width="80">
          <template #default="scope">
            <dict-tag :options="sys_normal_disable" :value="scope.row.status" />
          </template>
        </el-table-column>
        <el-table-column label="创建时间" align="center" prop="createTime">
          <template #default="scope">
            <span>{{ scope.row.createTime }}</span>
          </template>
        </el-table-column>
        <el-table-column fixed="right" label="操作" width="180">
          <template #default="scope">
            <el-tooltip content="修改" placement="top">
              <el-button v-hasPermi="['system:menu:edit']" link type="primary" icon="Edit" @click="handleUpdate(scope.row)" />
            </el-tooltip>
            <el-tooltip content="新增" placement="top">
              <el-button v-hasPermi="['system:menu:add']" link type="primary" icon="Plus" @click="handleAdd(scope.row)" />
            </el-tooltip>
            <el-tooltip content="删除" placement="top">
              <el-button v-hasPermi="['system:menu:remove']" link type="primary" icon="Delete" @click="handleDelete(scope.row)" />
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
    </el-card>

    <el-dialog v-model="dialog.visible" :title="dialog.title" destroy-on-close append-to-body width="750px">
      <el-form ref="menuFormRef" :model="form" :rules="rules" label-width="100px">
        <el-row>
          <el-col :span="24">
            <el-form-item label="上级菜单">
              <el-tree-select
                v-model="form.parentId"
                :data="menuOptions"
                :props="{ value: 'menuId', label: 'menuName', children: 'children' }"
                value-key="menuId"
                placeholder="选择上级菜单"
                check-strictly
              />
            </el-form-item>
          </el-col>
          <el-col :span="24">
            <el-form-item label="菜单类型" prop="menuType">
              <el-radio-group v-model="form.menuType">
                <el-radio value="M">目录</el-radio>
                <el-radio value="C">菜单</el-radio>
                <el-radio value="F">按钮</el-radio>
              </el-radio-group>
            </el-form-item>
          </el-col>
          <el-col v-if="form.menuType !== 'F'" :span="24">
            <el-form-item label="菜单图标" prop="icon">
              <icon-select v-model="form.icon" />
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item label="菜单名称" prop="menuName">
              <el-input v-model="form.menuName" placeholder="请输入菜单名称" />
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item label="显示排序" prop="orderNum">
              <el-input-number v-model="form.orderNum" controls-position="right" :min="0" />
            </el-form-item>
          </el-col>
          <el-col v-if="form.menuType !== 'F'" :span="12">
            <el-form-item>
              <template #label>
                <span>
                  <el-tooltip content="选择是外链则路由地址需要以`http(s)://`开头" placement="top">
                    <el-icon><question-filled /></el-icon>
                  </el-tooltip>
                  是否外链
                </span>
              </template>
              <el-radio-group v-model="form.isFrame">
                <el-radio label="0">是</el-radio>
                <el-radio label="1">否</el-radio>
              </el-radio-group>
            </el-form-item>
          </el-col>
          <el-col v-if="form.menuType !== 'F'" :span="12">
            <el-form-item prop="path">
              <template #label>
                <span>
                  <el-tooltip content="访问的路由地址，如：`user`，如外网地址需内链访问则以`http(s)://`开头" placement="top">
                    <el-icon><question-filled /></el-icon>
                  </el-tooltip>
                  路由地址
                </span>
              </template>
              <el-input v-model="form.path" placeholder="请输入路由地址" />
            </el-form-item>
          </el-col>
          <el-col v-if="form.menuType === 'C'" :span="12">
            <el-form-item prop="component">
              <template #label>
                <span>
                  <el-tooltip content="访问的组件路径，如：`system/user/index`，默认在`views`目录下" placement="top">
                    <el-icon><question-filled /></el-icon>
                  </el-tooltip>
                  组件路径
                </span>
              </template>
              <el-input v-model="form.component" placeholder="请输入组件路径" />
            </el-form-item>
          </el-col>
          <el-col v-if="form.menuType !== 'M'" :span="12">
            <el-form-item>
              <el-input v-model="form.perms" placeholder="请输入权限标识" maxlength="100" />
              <template #label>
                <span>
                  <el-tooltip content="控制器中定义的权限字符，如：@SaCheckPermission('system:user:list')" placement="top">
                    <el-icon><question-filled /></el-icon>
                  </el-tooltip>
                  权限字符
                </span>
              </template>
            </el-form-item>
          </el-col>
          <el-col v-if="form.menuType === 'C'" :span="12">
            <el-form-item>
              <el-input v-model="form.queryParam" placeholder="请输入路由参数" maxlength="255" />
              <template #label>
                <span>
                  <el-tooltip content='访问路由的默认传递参数，如：`{"id": 1, "name": "ry"}`' placement="top">
                    <el-icon><question-filled /></el-icon>
                  </el-tooltip>
                  路由参数
                </span>
              </template>
            </el-form-item>
          </el-col>
          <el-col v-if="form.menuType === 'C'" :span="12">
            <el-form-item>
              <template #label>
                <span>
                  <el-tooltip content="选择是则会被`keep-alive`缓存，需要匹配组件的`name`和地址保持一致" placement="top">
                    <el-icon><question-filled /></el-icon>
                  </el-tooltip>
                  是否缓存
                </span>
              </template>
              <el-radio-group v-model="form.isCache">
                <el-radio label="0">缓存</el-radio>
                <el-radio label="1">不缓存</el-radio>
              </el-radio-group>
            </el-form-item>
          </el-col>
          <el-col v-if="form.menuType !== 'F'" :span="12">
            <el-form-item>
              <template #label>
                <span>
                  <el-tooltip content="选择隐藏则路由将不会出现在侧边栏，但仍然可以访问" placement="top">
                    <el-icon><question-filled /></el-icon>
                  </el-tooltip>
                  显示状态
                </span>
              </template>
              <el-radio-group v-model="form.visible">
                <el-radio v-for="dict in sys_show_hide" :key="dict.value" :label="dict.value">{{ dict.label }} </el-radio>
              </el-radio-group>
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item>
              <template #label>
                <span>
                  <el-tooltip content="选择停用则路由将不会出现在侧边栏，也不能被访问" placement="top">
                    <el-icon><question-filled /></el-icon>
                  </el-tooltip>
                  菜单状态
                </span>
              </template>
              <el-radio-group v-model="form.status">
                <el-radio v-for="dict in sys_normal_disable" :key="dict.value" :label="dict.value">
                  {{ dict.label }}
                </el-radio>
              </el-radio-group>
            </el-form-item>
          </el-col>
        </el-row>
      </el-form>
      <template #footer>
        <div class="dialog-footer">
          <el-button type="primary" @click="submitForm">确 定</el-button>
          <el-button @click="cancel">取 消</el-button>
        </div>
      </template>
    </el-dialog>
  </div>
</template>

<script setup name="Menu" lang="ts">
import { addMenu, delMenu, getMenu, listMenu, updateMenu } from '@/api/system/menu';
import { MenuForm, MenuQuery, MenuVO } from '@/api/system/menu/types';
import { MenuTypeEnum } from '@/enums/MenuTypeEnum';
import { ElFormInstance, ElTableInstance } from 'element-plus';
import { ComponentInternalInstance, getCurrentInstance, onMounted, ref, reactive, toRefs } from 'vue';

// 类型定义
interface DialogOption {
  visible: boolean;
  title: string;
}

interface PageData<T, U> {
  form: T;
  queryParams: U;
  rules: Record<string, any[]>;
}

interface MenuOptionsType {
  menuId: number;
  menuName: string;
  children: MenuOptionsType[] | undefined;
}

// 全局变量
const { proxy } = getCurrentInstance() as ComponentInternalInstance;
const { sys_show_hide, sys_normal_disable } = toRefs<any>(proxy?.useDict('sys_show_hide', 'sys_normal_disable'));

// 1. 存储完整数据的数组（一次性获取后本地保存）
const fullMenuList = ref<MenuVO[]>([]);
// 2. 子节点缓存（优化查询性能）
const childrenCache = ref<Record<number, MenuVO[]>>({});

// 页面状态
const menuList = ref<MenuVO[]>([]);
const loading = ref(true);
const showSearch = ref(true);
const menuOptions = ref<MenuOptionsType[]>([]);
const isExpandAll = ref(false);

// 弹窗状态
const dialog = reactive<DialogOption>({
  visible: false,
  title: ''
});

// 表单相关
const queryFormRef = ref<ElFormInstance>();
const menuFormRef = ref<ElFormInstance>();
const initFormData = {
  path: '',
  menuId: undefined,
  parentId: 0,
  menuName: '',
  icon: '',
  menuType: MenuTypeEnum.M,
  orderNum: 1,
  isFrame: '1',
  isCache: '0',
  visible: '0',
  status: '0',
  menuSource: 1
};
const data = reactive<PageData<MenuForm, MenuQuery>>({
  form: { ...initFormData },
  queryParams: {
    menuName: undefined,
    status: undefined
  },
  rules: {
    menuName: [{ required: true, message: '菜单名称不能为空', trigger: 'blur' }],
    orderNum: [{ required: true, message: '菜单顺序不能为空', trigger: 'blur' }],
    path: [
      {
        required: (() => data.form.menuType !== 'F') as any,
        message: '路由地址不能为空',
        trigger: 'blur'
      }
    ]
  }
});

const menuTableRef = ref<ElTableInstance>();
const { queryParams, form, rules } = toRefs<PageData<MenuForm, MenuQuery>>(data);

/**
 * 初始化加载：一次性获取所有数据并处理
 * 仅在表格展示根节点，子节点通过懒加载从本地数据中筛选
 */
const getList = async () => {
  loading.value = true;
  try {
    // 1. 一次性获取所有数据
    const res = await listMenu(queryParams.value);
    fullMenuList.value = res.data || [];

    // 2. 构建缓存（提前计算所有节点的子节点）
    buildChildrenCache();
    console.log(11111);

    // 3. 只展示根节点（parentId=0）
    menuList.value = filterChildren(0);
  } catch (err) {
    proxy?.$modal.msgError('加载菜单失败');
  } finally {
    loading.value = false;
  }
};

/**
 * 构建子节点缓存
 * 一次性处理所有数据，建立父ID到子节点列表的映射
 */
const buildChildrenCache = () => {
  const cache: Record<number, MenuVO[]> = {};

  // 初始化所有可能的父ID
  fullMenuList.value.forEach((item) => {
    if (!cache[item.parentId!]) {
      cache[item.parentId!] = [];
    }
  });
  // 为每个父ID添加子节点
  fullMenuList.value.forEach((item) => {
    if (cache[item.parentId!]) {
      // 标记节点是否有子节点（用于显示展开图标）
      const hasChildren = fullMenuList.value.some((child) => child.parentId == item.menuId);
      cache[item.parentId!].push({ ...item, hasChildren });
    }
  });
  // 按排序号排序子节点
  // Object.keys(cache).forEach((parentId) => {
  //   cache[Number(parentId)].sort((a, b) => (a.orderNum || 0) - (b.orderNum || 0));
  // });

  childrenCache.value = cache;
};

/**
 * 从缓存中筛选指定父节点的子节点
 * @param parentId 父节点ID
 * @returns 子节点列表
 */
const filterChildren = (parentId: number): MenuVO[] => {
  return childrenCache.value[parentId] || [];
};

/**
 * 懒加载子节点实现
 * 从本地缓存中获取子节点，不发起额外请求
 */
const loadChildren = async (row, treeNode: any, resolve: (data: MenuVO[]) => void) => {
  const parentId = row.menuId;
  console.log(childrenCache.value);
  // 从缓存获取子节点并返回
  resolve(filterChildren(parentId));
};

/**
 * 判断节点是否有子节点
 * @param row 节点数据
 * @returns 是否有子节点
 */
const hasChildren = (row: MenuVO) => {
  return row.hasChildren || false;
};

/** 查询菜单下拉树结构 */
const getTreeselect = async () => {
  menuOptions.value = [];
  const response = await listMenu();
  const menu: MenuOptionsType = { menuId: 0, menuName: '主类目', children: [] };
  menu.children = proxy?.handleTree<MenuOptionsType>(response.data, 'menuId');
  menuOptions.value.push(menu);
};

/** 取消按钮 */
const cancel = () => {
  reset();
  dialog.visible = false;
};

/** 表单重置 */
const reset = () => {
  form.value = { ...initFormData };
  menuFormRef.value?.resetFields();
};

/** 搜索按钮操作 */
const handleQuery = () => {
  getList();
};

/** 重置按钮操作 */
const resetQuery = () => {
  queryFormRef.value?.resetFields();
  handleQuery();
};

/** 新增按钮操作 */
const handleAdd = (row?: MenuVO) => {
  reset();
  getTreeselect();
  row && row.menuId ? (form.value.parentId = row.menuId) : (form.value.parentId = 0);
  dialog.visible = true;
  dialog.title = '添加菜单';
};

/** 展开/折叠操作 */
const handleToggleExpandAll = () => {
  isExpandAll.value = !isExpandAll.value;
  toggleExpandAll(menuList.value, isExpandAll.value);
};

/** 展开/折叠所有节点 */
const toggleExpandAll = (data: MenuVO[], status: boolean) => {
  data.forEach((item: MenuVO) => {
    menuTableRef.value?.toggleRowExpansion(item, status);
    // 如果有子节点，递归处理
    if (item.hasChildren) {
      toggleExpandAll(filterChildren(item.menuId!), status);
    }
  });
};

/** 修改按钮操作 */
const handleUpdate = async (row: MenuVO) => {
  reset();
  await getTreeselect();
  if (row.menuId) {
    const { data } = await getMenu(row.menuId);
    form.value = data;
  }
  dialog.visible = true;
  dialog.title = '修改菜单';
};

/** 提交按钮 */
const submitForm = () => {
  menuFormRef.value?.validate(async (valid: boolean) => {
    if (valid) {
      // 保存数据到后端
      if (form.value.menuId) {
        await updateMenu(form.value);
      } else {
        await addMenu(form.value);
      }

      proxy?.$modal.msgSuccess('操作成功');
      dialog.visible = false;

      // 重新加载所有数据并重建缓存
      await getList();
    }
  });
};

/** 删除按钮操作 */
const handleDelete = async (row: MenuVO) => {
  await proxy?.$modal.confirm('是否确认删除名称为"' + row.menuName + '"的数据项?');
  await delMenu(row.menuId);

  // 重新加载所有数据并重建缓存
  await getList();
  proxy?.$modal.msgSuccess('删除成功');
};

// 初始化加载所有数据
onMounted(() => {
  getList();
});
</script>