feat(editor): 添加目录大纲侧边栏功能

- 在编辑器工具栏添加目录切换按钮，支持显示/隐藏目录侧边栏
- 实现实时目录生成功能，自动解析Markdown标题并生成大纲
- 添加目录点击跳转功能，点击目录项可滚动到对应标题位置
- 优化编辑器布局，支持侧边栏展开/收起动画效果

src/components/EditorToolbar.vue

@@ -1,6 +1,16 @@
 <template>
   <div class="editor-toolbar">
     <a-space :size="4">
+      <!-- 目录切换 -->
+      <a-button type="text" size="small" @click="$emit('action', 'toggleToc')" :title="tocVisible ? '隐藏目录' : '显示目录'">
+        <template #icon>
+          <MenuFoldOutlined v-if="tocVisible" />
+          <MenuUnfoldOutlined v-else />
+        </template>
+      </a-button>
+
+      <a-divider type="vertical" style="height: 1.2em; background-color: var(--border-color);" />
+
       <!-- 标题 -->
       <a-dropdown :trigger="['click']">
         <a-button type="text" size="small" title="标题">
@@ -66,9 +76,15 @@ import {
   MessageOutlined,
   UnorderedListOutlined,
   OrderedListOutlined,
-  LinkOutlined
+  LinkOutlined,
+  MenuUnfoldOutlined,
+  MenuFoldOutlined
 } from '@ant-design/icons-vue';
 
+defineProps({
+  tocVisible: Boolean
+});
+
 defineEmits(['action']);
 </script>
 

src/components/LivePreviewEditor.vue

@@ -1,7 +1,37 @@
 <template>
   <div class="live-editor" @click="handleEditorClick">
-    <EditorToolbar @action="handleToolbarAction" />
-    <codemirror v-model="code" placeholder="请输入 Markdown 内容..." :style="{ height: '0', flex: 1, fontSize: 'var(--editor-font-size)', color: 'var(--primary-color)' }" :autofocus="true" :indent-with-tab="true" :tab-size="2" :extensions="extensions" @ready="handleReady" @change="handleChange" />
+    <EditorToolbar @action="handleToolbarAction" :tocVisible="showToc" />
+    
+    <div class="editor-main">
+      <!-- 目录大纲侧边栏 -->
+      <div class="toc-sidebar" :class="{ collapsed: !showToc }">
+        <div class="toc-content">
+          <div v-if="toc.length === 0" class="toc-empty">暂无大纲</div>
+          <div 
+            v-for="(item, index) in toc" 
+            :key="index"
+            class="toc-item"
+            :class="`toc-level-${item.level}`"
+            @click.stop="scrollToHeader(item.line)"
+            :title="item.text"
+          >
+            {{ item.text }}
+          </div>
+        </div>
+      </div>
+
+      <codemirror 
+        v-model="code" 
+        placeholder="请输入 Markdown 内容..." 
+        :style="{ height: '100%', flex: 1, fontSize: 'var(--editor-font-size)', color: 'var(--primary-color)' }" 
+        :autofocus="true" 
+        :indent-with-tab="true" 
+        :tab-size="2" 
+        :extensions="extensions" 
+        @ready="handleReady" 
+        @change="handleChange" 
+      />
+    </div>
     
     <!-- 图片预览弹窗 -->
     <Teleport to="body">
@@ -51,6 +81,55 @@ const { onEditorAction } = useEditor();
 const { activeTab } = useTabs();
 const { applyHeading, wrapSelection, prefixLines, insertLink } = useMarkdownActions();
 
+// 目录相关
+const showToc = ref(true);
+const toc = shallowRef([]);
+
+const debounce = (fn, delay) => {
+  let timer = null;
+  return function (...args) {
+    if (timer) clearTimeout(timer);
+    timer = setTimeout(() => {
+      fn.apply(this, args);
+    }, delay);
+  };
+};
+
+const generateToc = debounce((content) => {
+  if (!content) {
+    toc.value = [];
+    return;
+  }
+  
+  const lines = content.split('\n');
+  const newToc = [];
+  // 简单匹配 # 开头的行
+  const reg = /^(#{1,6})\s+(.+)$/;
+  
+  let inCodeBlock = false;
+  
+  lines.forEach((line, index) => {
+    // 简单的代码块检测
+    if (line.trim().startsWith('```')) {
+      inCodeBlock = !inCodeBlock;
+      return;
+    }
+    
+    if (inCodeBlock) return;
+    
+    const match = line.match(reg);
+    if (match) {
+      newToc.push({
+        level: match[1].length,
+        text: match[2].trim(),
+        line: index + 1
+      });
+    }
+  });
+  
+  toc.value = newToc;
+}, 300);
+
 // 配置 Markdown 扩展
 const markdownExtension = markdown({ base: markdownLanguage, codeLanguages: languages });
 
@@ -67,6 +146,7 @@ const liveEditorTheme = computed(() => {
       },
       ".cm-scroller": {
         fontFamily: "var(--app-font-family)",
+        scrollBehavior: "smooth",
       },
       ".cm-content": {
         padding: "30px 40px",
@@ -75,8 +155,6 @@ const liveEditorTheme = computed(() => {
         margin: "0 auto",
         caretColor: "var(--primary-color)",
       },
-      // ... 其他保持不变，但需要确保 monospaceFont 的地方也改了
-
       ".cm-selectionBackground, ::selection": {
         backgroundColor: "var(--primary-color-bg)",
       },
@@ -92,7 +170,6 @@ const liveEditorTheme = computed(() => {
       ".cm-activeLineGutter": {
         backgroundColor: "transparent",
       },
-
       // Markdown 语法标记样式
       ".cm-md-syntax": {
         color: "var(--text-color-secondary)",
@@ -104,7 +181,6 @@ const liveEditorTheme = computed(() => {
       ".cm-md-syntax-hidden": {
         display: "none !important",
       },
-
       // 标题样式
       ".cm-line.cm-md-heading": {
         fontWeight: "600",
@@ -127,7 +203,6 @@ const liveEditorTheme = computed(() => {
       ".cm-line.cm-md-h4": { fontSize: "1.2em" },
       ".cm-line.cm-md-h5": { fontSize: "1.1em" },
       ".cm-line.cm-md-h6": { fontSize: "1em", color: "var(--text-color-secondary)" },
-
       // 引用样式
       ".cm-line.cm-md-blockquote": {
         color: "var(--text-color-secondary)",
@@ -135,7 +210,6 @@ const liveEditorTheme = computed(() => {
         paddingLeft: "16px",
         margin: "4px 0",
       },
-
       // 列表样式
       ".cm-line.cm-md-list": {
         paddingLeft: "4px",
@@ -143,7 +217,6 @@ const liveEditorTheme = computed(() => {
       ".cm-line.cm-md-task": {
         paddingLeft: "4px",
       },
-
       // 行内代码样式
       ".cm-md-monospace": {
         fontFamily: "var(--editor-font-family)",
@@ -152,7 +225,6 @@ const liveEditorTheme = computed(() => {
         borderRadius: "4px",
         fontSize: "0.9em",
       },
-
       // 代码块样式
       ".cm-line.cm-md-fenced-code": {
         fontFamily: "var(--editor-font-family)",
@@ -160,7 +232,6 @@ const liveEditorTheme = computed(() => {
         paddingLeft: "16px",
         fontSize: "0.9em",
       },
-      // 激活状态的代码块（稍微深一点，或者保持一致）
       ".cm-line.cm-md-fenced-code.cm-active": {
         backgroundColor: "var(--hover-background)",
         outline: "1px solid var(--border-color)",
@@ -172,7 +243,6 @@ const liveEditorTheme = computed(() => {
         float: "right",
         marginRight: "8px",
       },
-
       // 表格预览样式 (Widget)
       ".cm-md-table-preview": {
         display: "block",
@@ -197,14 +267,12 @@ const liveEditorTheme = computed(() => {
         fontFamily: "var(--editor-font-family)",
         whiteSpace: "pre",
       },
-
       // 分割线预览样式
       ".cm-md-hr-preview": {
         border: "none",
         borderBottom: "2px solid var(--border-color)",
         margin: "24px 0",
       },
-
       // 图片预览样式
       ".cm-md-image-preview": {
         maxWidth: "100%",
@@ -214,14 +282,12 @@ const liveEditorTheme = computed(() => {
         borderRadius: "4px",
         cursor: "default",
       },
-
       // 链接文本样式
       ".cm-md-link-text": {
         color: "var(--primary-color)",
         textDecoration: "underline",
         cursor: "pointer",
       },
-
       // 任务列表样式
       ".cm-md-task-checkbox": {
         display: "inline-block",
@@ -229,7 +295,6 @@ const liveEditorTheme = computed(() => {
         verticalAlign: "middle",
         cursor: "default",
       },
-
       // 删除线样式
       ".cm-md-strikethrough": {
         textDecoration: "line-through",
@@ -258,6 +323,11 @@ watch(
   },
 );
 
+// 监听代码变化生成大纲
+watch(code, (val) => {
+  generateToc(val);
+}, { immediate: true });
+
 const handleChange = (val) => {
   emit("update:modelValue", val);
 };
@@ -287,6 +357,10 @@ const handleReady = (payload) => {
 };
 
 const handleToolbarAction = (action, payload) => {
+  if (action === 'toggleToc') {
+    showToc.value = !showToc.value;
+    return;
+  }
   if (!editorView.value) return;
   executeAction(editorView.value, action, payload);
 };
@@ -323,6 +397,26 @@ const executeAction = (view, action, payload) => {
   }
 };
 
+const scrollToHeader = (lineNumber) => {
+  if (!editorView.value) return;
+  
+  const view = editorView.value;
+  // 获取行信息
+  const line = view.state.doc.line(lineNumber);
+  
+  // 滚动到指定位置并将该行设为顶部，同时移动光标
+  view.dispatch({
+    effects: EditorView.scrollIntoView(line.from, {
+      y: 'start',
+      yMargin: 20
+    }),
+    selection: { anchor: line.from }
+  });
+  
+  // 聚焦编辑器
+  view.focus();
+};
+
 // 图片预览相关逻辑
 const previewImage = reactive({
   visible: false,
@@ -366,6 +460,67 @@ onUnmounted(() => {
   background: var(--card-background);
 }
 
+.editor-main {
+  display: flex;
+  flex: 1;
+  height: 0;
+  width: 100%;
+  overflow: hidden;
+}
+
+.toc-sidebar {
+  width: 220px;
+  flex-shrink: 0;
+  border-right: 1px solid var(--border-color);
+  overflow-y: auto;
+  overflow-x: hidden;
+  background-color: var(--card-background);
+  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
+  opacity: 1;
+}
+
+.toc-sidebar.collapsed {
+  width: 0;
+  opacity: 0;
+  border-right-width: 0;
+}
+
+.toc-content {
+  width: 220px; /* 固定宽度，防止内容挤压 */
+  padding: 12px 0;
+}
+
+.toc-empty {
+  padding: 20px;
+  text-align: center;
+  color: var(--text-color-secondary);
+  font-size: 13px;
+}
+
+.toc-item {
+  padding: 6px 12px;
+  cursor: pointer;
+  color: var(--text-color);
+  font-size: 14px;
+  line-height: 1.5;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  transition: all 0.2s;
+}
+
+.toc-item:hover {
+  background-color: var(--hover-background);
+  color: var(--primary-color);
+}
+
+.toc-level-1 { padding-left: 12px; font-weight: 600; }
+.toc-level-2 { padding-left: 24px; }
+.toc-level-3 { padding-left: 36px; }
+.toc-level-4 { padding-left: 48px; font-size: 0.9em; color: var(--text-color-secondary); }
+.toc-level-5 { padding-left: 60px; font-size: 0.9em; color: var(--text-color-secondary); }
+.toc-level-6 { padding-left: 72px; font-size: 0.9em; color: var(--text-color-secondary); }
+
 :deep(.ͼ7) {
   text-decoration: none;
 }