前端启动成功

schoolNewsWeb/src/components/MenuItem.vue

@@ -0,0 +1,228 @@
+<template>
+  <div class="menu-item">
+    <!-- 有子菜单的情况 -->
+    <template v-if="hasChildren">
+      <div 
+        class="menu-item-content" 
+        :class="{ 
+          'active': isActive,
+          'collapsed': collapsed 
+        }"
+        @click="toggleExpanded"
+      >
+        <div class="menu-item-inner">
+          <i class="menu-icon" :class="menu.icon || 'icon-folder'"></i>
+          <span class="menu-title" v-if="!collapsed">{{ menu.name }}</span>
+          <i 
+            class="expand-icon" 
+            :class="{ 'expanded': expanded }"
+            v-if="!collapsed"
+          ></i>
+        </div>
+      </div>
+      
+      <!-- 子菜单 -->
+      <transition name="submenu">
+        <div 
+          class="submenu" 
+          v-if="expanded && !collapsed"
+        >
+          <MenuItem 
+            v-for="child in menu.children"
+            :key="child.menuID"
+            :menu="child" 
+            :collapsed="false"
+            :level="level + 1"
+            @menu-click="$emit('menu-click', $event)"
+          />
+        </div>
+      </transition>
+    </template>
+    
+    <!-- 没有子菜单的情况 -->
+    <template v-else>
+      <div 
+        class="menu-item-content" 
+        :class="{ 
+          'active': isActive,
+          'collapsed': collapsed 
+        }"
+        @click="handleClick"
+      >
+        <div class="menu-item-inner">
+          <i class="menu-icon" :class="menu.icon || 'icon-file'"></i>
+          <span class="menu-title" v-if="!collapsed">{{ menu.name }}</span>
+        </div>
+      </div>
+    </template>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { ref, computed } from 'vue';
+import { useRoute } from 'vue-router';
+import type { SysMenu } from '@/types';
+import { MenuType } from '@/types/enums';
+
+// 递归组件需要声明名称（Vue 3.5+）
+defineOptions({
+  name: 'MenuItem'
+});
+
+// Props
+interface Props {
+  menu: SysMenu;
+  collapsed?: boolean;
+  level?: number;
+}
+
+const props = withDefaults(defineProps<Props>(), {
+  level: 0
+});
+
+// Emits
+const emit = defineEmits<{
+  'menu-click': [menu: SysMenu];
+}>();
+
+// 状态
+const expanded = ref(false);
+
+// Composition API
+const route = useRoute();
+
+// 计算属性
+const hasChildren = computed(() => {
+  return props.menu.children && props.menu.children.length > 0;
+});
+
+const isActive = computed(() => {
+  // 检查当前路由是否匹配此菜单
+  return route.path === props.menu.url;
+});
+
+// 方法 - 使用 function 声明
+function toggleExpanded() {
+  if (hasChildren.value) {
+    expanded.value = !expanded.value;
+  }
+}
+
+function handleClick() {
+  if (props.menu.type === MenuType.MENU && props.menu.url) {
+    emit('menu-click', props.menu);
+  }
+}
+</script>
+
+<style lang="scss" scoped>
+.menu-item {
+  margin: 2px 8px;
+}
+
+.menu-item-content {
+  position: relative;
+  border-radius: 4px;
+  cursor: pointer;
+  transition: all 0.2s ease;
+  
+  &:hover {
+    background-color: rgba(255, 255, 255, 0.1);
+  }
+  
+  &.active {
+    background-color: #1890ff;
+    
+    .menu-item-inner {
+      color: white;
+    }
+  }
+  
+  &.collapsed {
+    margin: 4px 0;
+    text-align: center;
+  }
+}
+
+.menu-item-inner {
+  display: flex;
+  align-items: center;
+  padding: 12px 16px;
+  color: rgba(255, 255, 255, 0.85);
+  font-size: 14px;
+  line-height: 1;
+  
+  .collapsed & {
+    justify-content: center;
+    padding: 12px 8px;
+  }
+}
+
+.menu-icon {
+  font-size: 16px;
+  width: 16px;
+  text-align: center;
+  margin-right: 12px;
+  
+  .collapsed & {
+    margin-right: 0;
+  }
+}
+
+.menu-title {
+  flex: 1;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.expand-icon {
+  font-size: 12px;
+  transition: transform 0.2s ease;
+  margin-left: auto;
+  
+  &::before {
+    content: "▶";
+  }
+  
+  &.expanded {
+    transform: rotate(90deg);
+  }
+}
+
+.submenu {
+  background-color: rgba(0, 0, 0, 0.1);
+  border-radius: 4px;
+  margin: 4px 0;
+  overflow: hidden;
+  
+  .menu-item-content {
+    margin: 0 4px;
+    
+    .menu-item-inner {
+      padding-left: 48px;
+      font-size: 13px;
+    }
+  }
+}
+
+/* 动画效果 */
+.submenu-enter-active,
+.submenu-leave-active {
+  transition: all 0.3s ease;
+}
+
+.submenu-enter-from,
+.submenu-leave-to {
+  opacity: 0;
+  transform: translateY(-10px);
+}
+
+/* 图标字体类（简单实现，实际项目中使用图标库） */
+.icon-folder::before { content: "📁"; }
+.icon-file::before { content: "📄"; }
+.icon-dashboard::before { content: "📊"; }
+.icon-user::before { content: "👤"; }
+.icon-news::before { content: "📰"; }
+.icon-settings::before { content: "⚙️"; }
+</style>