diff --git a/src/codemirror/liveMarkdownDecorations.js b/src/codemirror/liveMarkdownDecorations.js
index f4feeee..45f019a 100644
--- a/src/codemirror/liveMarkdownDecorations.js
+++ b/src/codemirror/liveMarkdownDecorations.js
@@ -1,6 +1,41 @@
 import { RangeSetBuilder } from '@codemirror/state'
 import { Decoration, ViewPlugin, WidgetType } from '@codemirror/view'
 import { syntaxTree } from '@codemirror/language'
+import MarkdownIt from 'markdown-it'
+
+/**
+ * 帮助函数：判断是否为绝对路径或特殊 URL
+ */
+const isAbsoluteOrSpecialUrl = (rawUrl) => {
+  if (!rawUrl) return true
+  if (rawUrl.startsWith('#')) return true
+  if (rawUrl.startsWith('//')) return true
+  return /^[a-zA-Z][a-zA-Z\d+\-.]*:/.test(rawUrl)
+}
+
+/**
+ * 帮助函数：解析文件 URL
+ */
+const resolveToFileUrl = (rawUrl, baseDirFileUrl) => {
+  if (!rawUrl || !baseDirFileUrl) return rawUrl || ''
+  if (isAbsoluteOrSpecialUrl(rawUrl)) return rawUrl
+  try {
+    return new URL(rawUrl, baseDirFileUrl).href
+  } catch {
+    return rawUrl
+  }
+}
+
+/**
+ * 获取当前文件的基础目录 URL
+ */
+const getBaseDirFileUrl = (filePath) => {
+  if (!filePath) return ''
+  const normalized = filePath.replace(/\\/g, '/')
+  const lastSlashIndex = normalized.lastIndexOf('/')
+  const dirPath = lastSlashIndex >= 0 ? normalized.slice(0, lastSlashIndex + 1) : normalized
+  return encodeURI(`file:///${dirPath}`)
+}
 
 /**
  * 判断光标是否与给定的范围 [from, to] 重叠
@@ -22,10 +57,112 @@ class HiddenWidget extends WidgetType {
   }
 }
 
+/**
+ * 图片预览 Widget
+ */
+class ImageWidget extends WidgetType {
+  constructor(url, alt, title) {
+    super()
+    this.url = url
+    this.alt = alt
+    this.title = title
+  }
+
+  eq(other) {
+    return other.url === this.url && other.alt === this.alt && other.title === this.title
+  }
+
+  toDOM() {
+    const img = document.createElement('img')
+    img.src = this.url
+    img.alt = this.alt
+    if (this.title) img.title = this.title
+    img.className = 'cm-md-image-preview'
+    return img
+  }
+}
+
+/**
+ * 复选框 Widget
+ */
+class CheckboxWidget extends WidgetType {
+  constructor(checked) {
+    super()
+    this.checked = checked
+  }
+
+  eq(other) {
+    return other.checked === this.checked
+  }
+
+  toDOM() {
+    const wrap = document.createElement('span')
+    wrap.className = 'cm-md-task-checkbox'
+    const input = document.createElement('input')
+    input.type = 'checkbox'
+    input.checked = this.checked
+    // 阻止点击事件传播，避免光标移动或编辑器行为异常
+    // 注意：这里仅作展示，暂不支持直接点击修改文档
+    input.addEventListener('mousedown', e => e.preventDefault())
+    input.addEventListener('click', e => e.preventDefault()) 
+    wrap.appendChild(input)
+    return wrap
+  }
+}
+
+/**
+ * 表格预览 Widget
+ */
+class TableWidget extends WidgetType {
+  constructor(markdownText, filePath) {
+    super()
+    this.markdownText = markdownText
+    this.filePath = filePath
+  }
+
+  eq(other) {
+    return other.markdownText === this.markdownText && other.filePath === this.filePath
+  }
+
+  toDOM() {
+    const div = document.createElement('div')
+    div.className = 'cm-md-table-preview'
+    
+    // 初始化临时的 markdown-it 实例，配置正确的 baseDir
+    const md = new MarkdownIt({ html: true })
+    const env = { baseDirFileUrl: getBaseDirFileUrl(this.filePath) }
+    
+    // 复用图片路径解析逻辑
+    const defaultImageRule = md.renderer.rules.image
+    md.renderer.rules.image = (tokens, idx, options, env, self) => {
+      const token = tokens[idx]
+      const src = token.attrGet('src')
+      const resolved = resolveToFileUrl(src, env?.baseDirFileUrl)
+      if (resolved) token.attrSet('src', resolved)
+      if (defaultImageRule) return defaultImageRule(tokens, idx, options, env, self)
+      return self.renderToken(tokens, idx, options)
+    }
+
+    div.innerHTML = md.render(this.markdownText, env)
+    return div
+  }
+}
+
+/**
+ * 分割线预览 Widget
+ */
+class HRWidget extends WidgetType {
+  toDOM() {
+    const hr = document.createElement('hr')
+    hr.className = 'cm-md-hr-preview'
+    return hr
+  }
+}
+
 /**
  * 遍历语法树并构建 Decorations
  */
-const buildDecorations = (view) => {
+const buildDecorations = (view, filePath) => {
   const builder = new RangeSetBuilder()
   const { state } = view
   const doc = state.doc
@@ -40,8 +177,6 @@ const buildDecorations = (view) => {
         const nodeFrom = node.from
         const nodeTo = node.to
 
-        // console.log(typeName, nodeFrom, nodeTo, doc.sliceString(nodeFrom, nodeTo))
-
         // 1. 标题 (ATXHeading)
         if (typeName.startsWith('ATXHeading')) {
           const level = parseInt(typeName.replace('ATXHeading', '')) || 1
@@ -52,32 +187,22 @@ const buildDecorations = (view) => {
         
         // 1.1 标题标记 (HeaderMark: #, ## ...)
         if (typeName === 'HeaderMark') {
-          // 获取 HeaderMark 所在的父节点 (ATXHeading)
-          // 只有当光标在整个 Heading 范围内时，才显示 #
           const parent = node.node.parent
           const parentFrom = parent ? parent.from : nodeFrom
           const parentTo = parent ? parent.to : nodeTo
 
           if (!isCursorInRange(state, parentFrom, parentTo)) {
-            // 使用 Widget 替换实现彻底隐藏
             builder.add(nodeFrom, nodeTo, Decoration.replace({ widget: new HiddenWidget() }))
           } else {
              builder.add(nodeFrom, nodeTo, Decoration.mark({ class: 'cm-md-syntax cm-md-heading-mark' }))
           }
         }
 
-        // 2. 引用 (Blockquote) - 仅作为块标识
-        // Blockquote 节点可能包含多个段落，Lezer 的 Blockquote 结构通常是:
-        // Blockquote -> QuoteMark, Paragraph ...
-        // 这里的 QuoteMark 可能每一行都有，也可能只在首行（取决于是否紧凑）
-        
-        // 2.1 引用标记 (QuoteMark: >)
+        // 2. 引用 (Blockquote)
         if (typeName === 'QuoteMark') {
           const line = doc.lineAt(nodeFrom)
-          // 给该行添加引用样式
           builder.add(line.from, line.from, Decoration.line({ class: 'cm-md-blockquote' }))
           
-          // 判断光标是否在这一行
           if (!isCursorInRange(state, line.from, line.to)) {
              builder.add(nodeFrom, nodeTo, Decoration.replace({ widget: new HiddenWidget() }))
           } else {
@@ -86,31 +211,33 @@ const buildDecorations = (view) => {
         }
 
         // 3. 列表 (ListItem)
-        // ListMark: -, *, +, 1.
         if (typeName === 'ListMark') {
            const line = doc.lineAt(nodeFrom)
-           // 判断是否在 Task 列表内
-           // Lezer Markdown: ListItem -> ListMark, [Task -> TaskMark, ...]
-           // 或者 TaskListItem? 需要 Debug 确认，通常 ListItem 包含 ListMark
-           
            builder.add(line.from, line.from, Decoration.line({ class: 'cm-md-list' }))
-           
-           // 列表标记通常不隐藏，保持缩进结构
            builder.add(nodeFrom, nodeTo, Decoration.mark({ class: 'cm-md-syntax cm-md-list-mark' }))
         }
 
-        // 3.1 任务标记 (TaskMark: [ ] or [x])
+        // 3.1 任务列表 (Task)
         if (typeName === 'TaskMark') {
            const line = doc.lineAt(nodeFrom)
-           // 叠加 Task 样式
+           // 获取标记文本，例如 "[ ]" 或 "[x]"
+           const markText = doc.sliceString(nodeFrom, nodeTo)
+           const isChecked = markText.toLowerCase().includes('x')
+           
            builder.add(line.from, line.from, Decoration.line({ class: 'cm-md-task' }))
-           builder.add(nodeFrom, nodeTo, Decoration.mark({ class: 'cm-md-syntax cm-md-task-mark' }))
+           
+           // 如果光标不在该行，显示 Checkbox Widget
+           if (!isCursorInRange(state, line.from, line.to)) {
+              builder.add(nodeFrom, nodeTo, Decoration.replace({ 
+                 widget: new CheckboxWidget(isChecked) 
+              }))
+           } else {
+              builder.add(nodeFrom, nodeTo, Decoration.mark({ class: 'cm-md-syntax cm-md-task-mark' }))
+           }
         }
 
-        // 4. 加粗/斜体 (EmphasisMark: *, _, **, __)
-        if (typeName === 'EmphasisMark') {
-          // 找到 Emphasis / StrongEmphasis 父节点
-          // Lezer: Emphasis -> EmphasisMark ... EmphasisMark
+        // 4. 加粗/斜体/删除线 (Emphasis/Strikethrough)
+        if (typeName === 'EmphasisMark' || typeName === 'StrikethroughMark') {
           const parent = node.node.parent
           if (parent && !isCursorInRange(state, parent.from, parent.to)) {
              builder.add(nodeFrom, nodeTo, Decoration.replace({ widget: new HiddenWidget() }))
@@ -118,14 +245,16 @@ const buildDecorations = (view) => {
              builder.add(nodeFrom, nodeTo, Decoration.mark({ class: 'cm-md-syntax' }))
           }
         }
+        
+        // 4.1 删除线内容样式
+        if (typeName === 'Strikethrough') {
+           builder.add(nodeFrom, nodeTo, Decoration.mark({ class: 'cm-md-strikethrough' }))
+        }
 
         // 5. 代码块 (FencedCode)
         if (typeName === 'FencedCode') {
-           // 给代码块范围内的所有行添加背景
            const startLine = doc.lineAt(nodeFrom)
            const endLine = doc.lineAt(nodeTo)
-           
-           // 判断光标是否在代码块内
            const cursorInBlock = isCursorInRange(state, nodeFrom, nodeTo)
            const blockClass = cursorInBlock ? 'cm-md-fenced-code cm-active' : 'cm-md-fenced-code'
 
@@ -135,18 +264,16 @@ const buildDecorations = (view) => {
            }
         }
 
-        // 5.1 代码块标记 (CodeMark: ```)
+        // 5.1 代码块标记 (CodeMark)
         if (typeName === 'CodeMark') {
            const parent = node.node.parent
            if (parent?.name === 'FencedCode') {
-             // 如果光标不在整个代码块内，隐藏首尾的 ```
              if (!isCursorInRange(state, parent.from, parent.to)) {
                 builder.add(nodeFrom, nodeTo, Decoration.replace({ widget: new HiddenWidget() }))
              } else {
                 builder.add(nodeFrom, nodeTo, Decoration.mark({ class: 'cm-md-syntax' }))
              }
            } else if (parent?.name === 'InlineCode') {
-              // 行内代码的反引号
               if (!isCursorInRange(state, parent.from, parent.to)) {
                  builder.add(nodeFrom, nodeTo, Decoration.replace({ widget: new HiddenWidget() }))
               } else {
@@ -155,30 +282,90 @@ const buildDecorations = (view) => {
            }
         }
         
-        // 5.2 代码信息 (CodeInfo: javascript)
+        // 5.2 代码信息 (CodeInfo)
         if (typeName === 'CodeInfo') {
-            const parent = node.node.parent
-            // 如果光标不在代码块内，可以隐藏语言标识，或者显示得更好看
-            // 这里选择始终显示，但样式弱化
             builder.add(nodeFrom, nodeTo, Decoration.mark({ class: 'cm-md-code-info' }))
         }
         
         // 6. 链接 (Link) -> LinkMark, URL, LinkTitle...
-        if (typeName === 'LinkMark') {
-           const parent = node.node.parent
-           if (parent && !isCursorInRange(state, parent.from, parent.to)) {
-              builder.add(nodeFrom, nodeTo, Decoration.replace({ widget: new HiddenWidget() }))
-           } else {
-              builder.add(nodeFrom, nodeTo, Decoration.mark({ class: 'cm-md-syntax' }))
+        // 结构通常是: Link( [ LinkMark( [ ) ... LinkMark( ] ) LinkMark( ( ) URL ... LinkMark( ) ) ] )
+        // 我们希望在非编辑状态下：隐藏所有 LinkMark 和 URL，只显示 Link 文本
+        if (typeName === 'Link') {
+           if (!isCursorInRange(state, nodeFrom, nodeTo)) {
+              // 遍历 Link 内部子节点
+              let cursor = node.node.cursor()
+              if (cursor.firstChild()) {
+                 do {
+                    const subType = cursor.type.name
+                    // 隐藏 [ ] ( ) 和 URL
+                    if (subType === 'LinkMark' || subType === 'URL' || subType === 'LinkTitle') {
+                       builder.add(cursor.from, cursor.to, Decoration.replace({ widget: new HiddenWidget() }))
+                    }
+                 } while (cursor.nextSibling())
+              }
+              // 给整个 Link 范围添加链接样式
+              builder.add(nodeFrom, nodeTo, Decoration.mark({ class: 'cm-md-link-text' }))
            }
         }
+        // 如果光标在 Link 内，显示源码，LinkMark 等不需要处理（默认显示）
+        // 之前的 LinkMark 隐藏逻辑需要调整，避免冲突
+        // 为了简单起见，如果 typeName === 'Link' 已经处理了隐藏，下面针对 LinkMark/URL 的独立逻辑需要加条件
         
-        // URL 隐藏
-        if (typeName === 'URL') {
-           const parent = node.node.parent
-           if (parent && parent.name === 'Link' && !isCursorInRange(state, parent.from, parent.to)) {
-              // 隐藏 URL
-              builder.add(nodeFrom, nodeTo, Decoration.replace({ widget: new HiddenWidget() }))
+        // 7. 图片 (Image)
+        if (typeName === 'Image') {
+           if (!isCursorInRange(state, nodeFrom, nodeTo)) {
+              // 解析图片 URL
+              let url = ''
+              let alt = ''
+              let title = ''
+              
+              // 简单的正则提取，比遍历子节点快
+              const text = doc.sliceString(nodeFrom, nodeTo)
+              const match = /!\[(.*?)\]\((.*?)(?:\s+"(.*?)")?\)/.exec(text)
+              if (match) {
+                 alt = match[1]
+                 url = match[2]
+                 title = match[3]
+              }
+
+              if (url) {
+                 const baseDirFileUrl = getBaseDirFileUrl(filePath)
+                 const resolvedUrl = resolveToFileUrl(url, baseDirFileUrl)
+                 builder.add(nodeFrom, nodeTo, Decoration.replace({ 
+                    widget: new ImageWidget(resolvedUrl, alt, title),
+                    block: false // 行内图片
+                 }))
+              }
+           }
+        }
+
+        // 8. 表格 (Table)
+        if (typeName === 'Table') {
+          if (!isCursorInRange(state, nodeFrom, nodeTo)) {
+             const markdownText = doc.sliceString(nodeFrom, nodeTo)
+             builder.add(nodeFrom, nodeTo, Decoration.replace({ 
+               widget: new TableWidget(markdownText, filePath),
+               block: true 
+             }))
+          } else {
+             const startLine = doc.lineAt(nodeFrom)
+             const endLine = doc.lineAt(nodeTo)
+             for (let l = startLine.number; l <= endLine.number; l++) {
+               const lineInfo = doc.line(l)
+               builder.add(lineInfo.from, lineInfo.from, Decoration.line({ class: 'cm-md-table-source' }))
+             }
+          }
+        }
+
+        // 9. 分割线 (HorizontalRule)
+        if (typeName === 'HorizontalRule') {
+           if (!isCursorInRange(state, nodeFrom, nodeTo)) {
+              builder.add(nodeFrom, nodeTo, Decoration.replace({ 
+                 widget: new HRWidget(),
+                 block: true
+              }))
+           } else {
+              builder.add(nodeFrom, nodeTo, Decoration.mark({ class: 'cm-md-syntax' }))
            }
         }
       }
@@ -188,16 +375,16 @@ const buildDecorations = (view) => {
   return builder.finish()
 }
 
-export const liveMarkdownDecorations = () => {
+export const liveMarkdownDecorations = (filePath) => {
   return ViewPlugin.fromClass(
     class {
       constructor(view) {
-        this.decorations = buildDecorations(view)
+        this.decorations = buildDecorations(view, filePath)
       }
 
       update(update) {
         if (update.docChanged || update.viewportChanged || update.selectionSet) {
-          this.decorations = buildDecorations(update.view)
+          this.decorations = buildDecorations(update.view, filePath)
         }
       }
     },
diff --git a/src/components/Editor.vue b/src/components/Editor.vue
index 24526d8..7ffeda3 100644
--- a/src/components/Editor.vue
+++ b/src/components/Editor.vue
@@ -20,6 +20,9 @@ import { oneDark } from '@codemirror/theme-one-dark'
 import { EditorView } from "@codemirror/view"
 import { useTheme } from '../composables/useTheme'
 import { attachImagePaste } from '../codemirror/imagePaste'
+import { useEditor } from '../composables/useEditor'
+import { useMarkdownActions } from '../composables/useMarkdownActions'
+import { useTabs } from '../composables/useTabs'
 
 const props = defineProps({
   modelValue: String,
@@ -30,6 +33,10 @@ const emit = defineEmits(['update:modelValue'])
 
 const code = ref(props.modelValue || '')
 const { isDark } = useTheme()
+const { onEditorAction } = useEditor()
+const { activeTab } = useTabs()
+const { applyHeading, wrapSelection, prefixLines, insertLink } = useMarkdownActions()
+
 const markdownExtension = markdown()
 const editorTheme = EditorView.theme({
   '&': {
@@ -68,13 +75,19 @@ const handleChange = (val) => {
   emit('update:modelValue', val)
 }
 
+const editorView = ref(null)
 let detachPaste = null
+let removeActionListener = null
+
 onUnmounted(() => {
   if (typeof detachPaste === 'function') detachPaste()
+  if (removeActionListener) removeActionListener()
 })
 
 const handleReady = (payload) => {
   const view = payload.view;
+  editorView.value = view
+  
   if (typeof detachPaste === 'function') detachPaste()
   detachPaste = attachImagePaste({
     view,
@@ -84,5 +97,27 @@ const handleReady = (payload) => {
       emit('update:modelValue', newDoc)
     }
   })
+
+  // 注册事件监听
+  if (removeActionListener) removeActionListener()
+  removeActionListener = onEditorAction((action, payload) => {
+    // 只有当自己是当前激活的 Tab 且编辑器实例存在且可见时才响应
+    if (activeTab.value?.filePath !== props.filePath || !editorView.value) return
+    // 简单检查可见性
+    if (editorView.value.dom.offsetParent === null) return
+
+    const v = editorView.value
+    switch (action) {
+      case 'heading': applyHeading(v, payload); break;
+      case 'bold': wrapSelection(v, '**', '**'); break;
+      case 'italic': wrapSelection(v, '*', '*'); break;
+      case 'strike': wrapSelection(v, '~~', '~~'); break;
+      case 'inlineCode': wrapSelection(v, '`', '`'); break;
+      case 'quote': prefixLines(v, () => '> '); break;
+      case 'unorderedList': prefixLines(v, () => '- '); break;
+      case 'orderedList': prefixLines(v, (i) => `${i + 1}. `); break;
+      case 'link': insertLink(v); break;
+    }
+  })
 }
 </script>
diff --git a/src/components/FileTree.vue b/src/components/FileTree.vue
index 81eea73..18aef40 100644
--- a/src/components/FileTree.vue
+++ b/src/components/FileTree.vue
@@ -1,7 +1,17 @@
 <template>
   <div class="file-tree-container">
     <div class="tree-header">
-      <span class="title">资源管理器</span>
+      <a-input
+        v-model:value="searchKeyword"
+        placeholder="搜索文件..."
+        size="small"
+        allow-clear
+        class="search-input"
+      >
+        <template #prefix>
+          <SearchOutlined />
+        </template>
+      </a-input>
       <div class="header-actions">
         <a-button type="text" size="small" @click="handleRefresh" title="刷新">
           <template #icon><ReloadOutlined /></template>
@@ -79,8 +89,8 @@
 </template>
 
 <script setup>
-import { computed, ref } from 'vue';
-import { EyeInvisibleOutlined, EyeOutlined, ReloadOutlined } from '@ant-design/icons-vue';
+import { computed, ref, watch } from 'vue';
+import { EyeInvisibleOutlined, EyeOutlined, ReloadOutlined, SearchOutlined } from '@ant-design/icons-vue';
 import { useFileTree } from '../composables/useFileTree';
 import { useTabs } from '../composables/useTabs';
 import { useConfig } from '../composables/useConfig';
@@ -96,6 +106,7 @@ const modalInputValue = ref('');
 const modalPlaceholder = ref('');
 const currentAction = ref(null);
 const currentNode = ref(null);
+const searchKeyword = ref('');
 
 // 将 nodes 转换为 treeData，主要处理 isLeaf
 const transformNodes = (nodes) => {
@@ -117,21 +128,91 @@ const isHiddenItemName = (name) => {
 
 const filterNodes = (nodes) => {
   if (!Array.isArray(nodes) || nodes.length === 0) return [];
-  if (showHiddenItems.value) {
-    return nodes.map(node => ({
-      ...node,
-      children: node.children === undefined ? undefined : filterNodes(node.children)
-    }));
+  
+  // 1. 处理隐藏文件
+  let filtered = nodes;
+  if (!showHiddenItems.value) {
+    filtered = nodes.filter(node => !isHiddenItemName(node?.name));
   }
-  return nodes
-    .filter(node => !isHiddenItemName(node?.name))
-    .map(node => ({
-      ...node,
-      children: node.children === undefined ? undefined : filterNodes(node.children)
-    }));
+  
+  // 递归处理子节点
+  return filtered.map(node => ({
+    ...node,
+    children: node.children === undefined ? undefined : filterNodes(node.children)
+  }));
 };
 
-const treeData = computed(() => transformNodes(filterNodes(state.nodes)));
+const searchFilterNodes = (nodes, keyword) => {
+  if (!Array.isArray(nodes) || nodes.length === 0) return [];
+  const lowerKeyword = keyword.toLowerCase();
+  
+  const result = [];
+  for (const node of nodes) {
+    const nameMatch = node.name.toLowerCase().includes(lowerKeyword);
+    // 递归处理子节点
+    let filteredChildren = [];
+    if (node.children) {
+      filteredChildren = searchFilterNodes(node.children, keyword);
+    }
+    
+    // 如果当前节点匹配，或者子节点有匹配项，则保留
+    if (nameMatch || filteredChildren.length > 0) {
+      result.push({
+        ...node,
+        children: node.children ? filteredChildren : undefined
+      });
+    }
+  }
+  return result;
+};
+
+// 获取所有需要展开的路径
+const getExpandedKeys = (nodes, keyword, result = []) => {
+  if (!keyword) return result;
+  const lowerKeyword = keyword.toLowerCase();
+  
+  for (const node of nodes) {
+    const nameMatch = node.name.toLowerCase().includes(lowerKeyword);
+    let hasChildMatch = false;
+    
+    if (node.children) {
+      const initialLength = result.length;
+      getExpandedKeys(node.children, keyword, result);
+      if (result.length > initialLength) {
+        hasChildMatch = true;
+      }
+    }
+    
+    // 如果子节点有匹配，当前节点需要展开
+    if (hasChildMatch) {
+      result.push(node.path);
+    }
+  }
+  return result;
+};
+
+const treeData = computed(() => {
+  // 1. 基础过滤（隐藏文件）
+  let nodes = filterNodes(state.nodes);
+  
+  // 2. 搜索过滤
+  if (searchKeyword.value) {
+    nodes = searchFilterNodes(nodes, searchKeyword.value);
+  }
+  
+  return transformNodes(nodes);
+});
+
+// 监听搜索关键词，自动展开
+watch(searchKeyword, (newVal) => {
+  if (newVal) {
+    const nodes = filterNodes(state.nodes); // 基于基础过滤后的节点计算
+    const keysToExpand = [];
+    getExpandedKeys(nodes, newVal, keysToExpand);
+    // 合并并去重
+    state.expandedKeys = [...new Set([...state.expandedKeys, ...keysToExpand])];
+  }
+});
 
 const toggleShowHiddenItems = async () => {
   if (!state.rootPath) return;
@@ -369,8 +450,9 @@ const handleModalOk = async () => {
   gap: 4px;
 }
 
-.title {
-  font-weight: 600;
+.search-input {
+  flex: 1;
+  margin-right: 8px;
 }
 
 .tree-content {
diff --git a/src/components/LivePreviewEditor.vue b/src/components/LivePreviewEditor.vue
index 187376f..bd306a4 100644
--- a/src/components/LivePreviewEditor.vue
+++ b/src/components/LivePreviewEditor.vue
@@ -1,39 +1,5 @@
 <template>
   <div class="live-editor">
-    <div class="live-editor-toolbar">
-      <a-space size="small">
-        <a-button size="small" type="text" @click="applyHeading(1)" title="H1">H1</a-button>
-        <a-button size="small" type="text" @click="applyHeading(2)" title="H2">H2</a-button>
-        <a-button size="small" type="text" @click="applyHeading(3)" title="H3">H3</a-button>
-        <a-divider type="vertical" />
-        <a-button size="small" type="text" @click="toggleBold" title="加粗">
-          <template #icon><BoldOutlined /></template>
-        </a-button>
-        <a-button size="small" type="text" @click="toggleItalic" title="斜体">
-          <template #icon><ItalicOutlined /></template>
-        </a-button>
-        <a-button size="small" type="text" @click="toggleStrike" title="删除线">
-          <template #icon><StrikethroughOutlined /></template>
-        </a-button>
-        <a-button size="small" type="text" @click="toggleInlineCode" title="行内代码">
-          <template #icon><CodeOutlined /></template>
-        </a-button>
-        <a-divider type="vertical" />
-        <a-button size="small" type="text" @click="toggleQuote" title="引用">
-          <template #icon><MessageOutlined /></template>
-        </a-button>
-        <a-button size="small" type="text" @click="toggleUnorderedList" title="无序列表">
-          <template #icon><UnorderedListOutlined /></template>
-        </a-button>
-        <a-button size="small" type="text" @click="toggleOrderedList" title="有序列表">
-          <template #icon><OrderedListOutlined /></template>
-        </a-button>
-        <a-divider type="vertical" />
-        <a-button size="small" type="text" @click="insertLink" title="链接">
-          <template #icon><LinkOutlined /></template>
-        </a-button>
-      </a-space>
-    </div>
     <codemirror
       v-model="code"
       placeholder="请输入 Markdown 内容..."
@@ -53,20 +19,12 @@ import { computed, onUnmounted, ref, watch } from 'vue'
 import { Codemirror } from 'vue-codemirror'
 import { markdown } from '@codemirror/lang-markdown'
 import { EditorView } from '@codemirror/view'
-import { EditorSelection } from '@codemirror/state'
-import {
-  BoldOutlined,
-  CodeOutlined,
-  ItalicOutlined,
-  LinkOutlined,
-  MessageOutlined,
-  OrderedListOutlined,
-  StrikethroughOutlined,
-  UnorderedListOutlined
-} from '@ant-design/icons-vue'
 import { useTheme } from '../composables/useTheme'
 import { liveMarkdownDecorations } from '../codemirror/liveMarkdownDecorations'
 import { attachImagePaste } from '../codemirror/imagePaste'
+import { useEditor } from '../composables/useEditor'
+import { useMarkdownActions } from '../composables/useMarkdownActions'
+import { useTabs } from '../composables/useTabs'
 
 const props = defineProps({
   modelValue: String,
@@ -77,12 +35,16 @@ const emit = defineEmits(['update:modelValue'])
 
 const code = ref(props.modelValue || '')
 const { isDark } = useTheme()
+const { onEditorAction } = useEditor()
+const { activeTab } = useTabs()
+const { applyHeading, wrapSelection, prefixLines, insertLink } = useMarkdownActions()
+
+// 配置 Markdown 扩展
 const markdownExtension = markdown()
+
 const editorView = ref(null)
 let detachPaste = null
-onUnmounted(() => {
-  if (typeof detachPaste === 'function') detachPaste()
-})
+let removeActionListener = null
 
 const liveEditorTheme = computed(() => {
   const contentFont = '-apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif'
@@ -190,12 +152,80 @@ const liveEditorTheme = computed(() => {
       fontFamily: contentFont,
       float: 'right',
       marginRight: '8px'
+    },
+
+    // 表格预览样式 (Widget)
+    '.cm-md-table-preview': {
+      display: 'block',
+      width: '100%',
+      overflow: 'auto',
+      marginBottom: '16px'
+    },
+    '.cm-md-table-preview table': {
+      width: '100%',
+      borderSpacing: 0,
+      borderCollapse: 'collapse'
+    },
+    '.cm-md-table-preview th, .cm-md-table-preview td': {
+      padding: '6px 13px',
+      border: '1px solid var(--border-color)'
+    },
+    '.cm-md-table-preview tr:nth-child(2n)': {
+      backgroundColor: 'var(--hover-background)'
+    },
+    // 表格源码编辑时的样式
+    '.cm-line.cm-md-table-source': {
+      fontFamily: monospaceFont,
+      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%',
+      maxHeight: '400px',
+      display: 'block',
+      margin: '8px auto',
+      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',
+      marginRight: '8px',
+      verticalAlign: 'middle',
+      cursor: 'default'
+    },
+    
+    // 删除线样式
+    '.cm-md-strikethrough': {
+      textDecoration: 'line-through',
+      color: 'var(--text-color-secondary)'
     }
   }, { dark: isDark.value })
 })
 
 const extensions = computed(() => {
-  return [markdownExtension, liveMarkdownDecorations(), EditorView.lineWrapping, liveEditorTheme.value]
+  return [
+    markdownExtension, 
+    liveMarkdownDecorations(props.filePath), 
+    EditorView.lineWrapping, 
+    liveEditorTheme.value
+  ]
 })
 
 watch(() => props.modelValue, (val) => {
@@ -206,130 +236,9 @@ const handleChange = (val) => {
   emit('update:modelValue', val)
 }
 
-const syncDocToModel = () => {
-  const view = editorView.value
-  if (!view) return
-  const newDoc = view.state.doc.toString()
-  code.value = newDoc
-  emit('update:modelValue', newDoc)
-}
-
-const focusEditor = () => {
-  const view = editorView.value
-  if (!view) return
-  view.focus()
-}
-
-const getSelectedLineNumbers = (state) => {
-  const main = state.selection.main
-  const fromLine = state.doc.lineAt(main.from).number
-  const toLine = state.doc.lineAt(main.to).number
-  return { fromLine, toLine }
-}
-
-const applyHeading = (level) => {
-  const view = editorView.value
-  if (!view) return
-
-  const { state } = view
-  const { fromLine, toLine } = getSelectedLineNumbers(state)
-  const changes = []
-  const prefix = `${'#'.repeat(level)} `
-
-  for (let ln = toLine; ln >= fromLine; ln -= 1) {
-    const line = state.doc.line(ln)
-    const match = /^(#{1,6})\s+/.exec(line.text)
-    if (match) {
-      const replaceFrom = line.from
-      const replaceTo = line.from + match[0].length
-      changes.push({ from: replaceFrom, to: replaceTo, insert: prefix })
-    } else {
-      changes.push({ from: line.from, to: line.from, insert: prefix })
-    }
-  }
-
-  view.dispatch(state.update({ changes }))
-  syncDocToModel()
-  focusEditor()
-}
-
-const wrapSelection = (left, right) => {
-  const view = editorView.value
-  if (!view) return
-
-  const { state } = view
-  const main = state.selection.main
-  const selectedText = state.doc.sliceString(main.from, main.to)
-  const insertText = `${left}${selectedText}${right}`
-
-  const cursorFrom = main.from + left.length
-  const cursorTo = cursorFrom + selectedText.length
-
-  view.dispatch(
-    state.update({
-      changes: { from: main.from, to: main.to, insert: insertText },
-      selection: EditorSelection.single(cursorFrom, cursorTo)
-    })
-  )
-  syncDocToModel()
-  focusEditor()
-}
-
-const prefixLines = (makePrefix) => {
-  const view = editorView.value
-  if (!view) return
-
-  const { state } = view
-  const { fromLine, toLine } = getSelectedLineNumbers(state)
-  const changes = []
-
-  for (let ln = toLine; ln >= fromLine; ln -= 1) {
-    const line = state.doc.line(ln)
-    const indentMatch = /^(\s*)/.exec(line.text)
-    const indentLen = indentMatch ? indentMatch[1].length : 0
-    const insertAt = line.from + indentLen
-    const prefix = makePrefix(ln - fromLine)
-    changes.push({ from: insertAt, to: insertAt, insert: prefix })
-  }
-
-  view.dispatch(state.update({ changes }))
-  syncDocToModel()
-  focusEditor()
-}
-
-const toggleBold = () => wrapSelection('**', '**')
-const toggleItalic = () => wrapSelection('*', '*')
-const toggleStrike = () => wrapSelection('~~', '~~')
-const toggleInlineCode = () => wrapSelection('`', '`')
-const toggleQuote = () => prefixLines(() => '> ')
-const toggleUnorderedList = () => prefixLines(() => '- ')
-const toggleOrderedList = () => prefixLines((index) => `${index + 1}. `)
-
-const insertLink = () => {
-  const view = editorView.value
-  if (!view) return
-
-  const { state } = view
-  const main = state.selection.main
-  const selectedText = state.doc.sliceString(main.from, main.to)
-
-  const textPart = selectedText || '链接文字'
-  const insertText = `[${textPart}](https://)`
-  const urlFrom = main.from + 2 + textPart.length
-  const urlTo = urlFrom + 'https://'.length
-
-  view.dispatch(
-    state.update({
-      changes: { from: main.from, to: main.to, insert: insertText },
-      selection: EditorSelection.single(urlFrom, urlTo)
-    })
-  )
-  syncDocToModel()
-  focusEditor()
-}
-
 const handleReady = (payload) => {
   editorView.value = payload.view
+  
   if (typeof detachPaste === 'function') detachPaste()
   detachPaste = attachImagePaste({
     view: payload.view,
@@ -339,7 +248,32 @@ const handleReady = (payload) => {
       emit('update:modelValue', newDoc)
     }
   })
+
+  // 注册事件监听
+  if (removeActionListener) removeActionListener()
+  removeActionListener = onEditorAction((action, payload) => {
+    // 只有当自己是当前激活的 Tab 且编辑器实例存在时才响应
+    if (activeTab.value?.filePath !== props.filePath || !editorView.value) return
+
+    const view = editorView.value
+    switch (action) {
+      case 'heading': applyHeading(view, payload); break;
+      case 'bold': wrapSelection(view, '**', '**'); break;
+      case 'italic': wrapSelection(view, '*', '*'); break;
+      case 'strike': wrapSelection(view, '~~', '~~'); break;
+      case 'inlineCode': wrapSelection(view, '`', '`'); break;
+      case 'quote': prefixLines(view, () => '> '); break;
+      case 'unorderedList': prefixLines(view, () => '- '); break;
+      case 'orderedList': prefixLines(view, (i) => `${i + 1}. `); break;
+      case 'link': insertLink(view); break;
+    }
+  })
 }
+
+onUnmounted(() => {
+  if (typeof detachPaste === 'function') detachPaste()
+  if (removeActionListener) removeActionListener()
+})
 </script>
 
 <style scoped>
@@ -350,14 +284,4 @@ const handleReady = (payload) => {
   overflow: hidden;
   background: var(--card-background);
 }
-
-.live-editor-toolbar {
-  height: 40px;
-  display: flex;
-  align-items: center;
-  padding: 0 12px;
-  border-bottom: 1px solid var(--border-color);
-  background: var(--card-background);
-  flex-shrink: 0;
-}
 </style>
diff --git a/src/components/TabBar.vue b/src/components/TabBar.vue
index dea4107..1994e74 100644
--- a/src/components/TabBar.vue
+++ b/src/components/TabBar.vue
@@ -1,25 +1,42 @@
 <template>
   <div class="tab-bar">
-    <div 
+    <a-dropdown 
       v-for="tab in state.tabs" 
-      :key="tab.id"
-      :class="['tab-item', { active: tab.id === state.activeTabId }]"
-      @click="activateTab(tab.id)"
-      @contextmenu.prevent="onContextMenu($event, tab)"
+      :key="tab.id" 
+      :trigger="['contextmenu']"
     >
-      <HomeOutlined v-if="tab.type === 'home'" />
-      <span v-else class="tab-title">{{ tab.title }}</span>
-      
-      <span v-if="tab.isDirty" class="dirty-dot">●</span>
-      
       <div 
-        v-if="tab.closable" 
-        class="close-btn"
-        @click.stop="closeTab(tab.id)"
+        :class="['tab-item', { active: tab.id === state.activeTabId }]"
+        @click="activateTab(tab.id)"
+        @mousedown.middle.prevent="tab.closable && closeTab(tab.id)"
       >
-        <CloseOutlined />
+        <HomeOutlined v-if="tab.type === 'home'" />
+        <span v-else class="tab-title">{{ tab.title }}</span>
+        
+        <span v-if="tab.isDirty" class="dirty-dot">●</span>
+        
+        <div 
+          v-if="tab.closable" 
+          class="close-btn"
+          @click.stop="closeTab(tab.id)"
+        >
+          <CloseOutlined />
+        </div>
       </div>
-    </div>
+      <template #overlay>
+        <a-menu>
+          <a-menu-item key="close" :disabled="!tab.closable" @click="closeTab(tab.id)">
+            关闭
+          </a-menu-item>
+          <a-menu-item key="closeOther" @click="closeOtherTabs(tab.id)">
+            保留当前关闭其他
+          </a-menu-item>
+          <a-menu-item key="closeAll" @click="closeAllTabs()">
+            全部关闭
+          </a-menu-item>
+        </a-menu>
+      </template>
+    </a-dropdown>
   </div>
 </template>
 
@@ -27,11 +44,8 @@
 import { HomeOutlined, CloseOutlined } from '@ant-design/icons-vue';
 import { useTabs } from '../composables/useTabs';
 
-const { state, activateTab, closeTab } = useTabs();
+const { state, activateTab, closeTab, closeOtherTabs, closeAllTabs } = useTabs();
 
-const onContextMenu = (e, tab) => {
-  // 可以在这里添加右键菜单：关闭其他、关闭右侧等
-};
 </script>
 
 <style scoped>
diff --git a/src/components/Toolbar.vue b/src/components/Toolbar.vue
index 5535bdf..21d1441 100644
--- a/src/components/Toolbar.vue
+++ b/src/components/Toolbar.vue
@@ -63,7 +63,15 @@ import {
   GithubOutlined,
   ExportOutlined,
   SettingOutlined,
-  HistoryOutlined
+  HistoryOutlined,
+  BoldOutlined,
+  ItalicOutlined,
+  StrikethroughOutlined,
+  CodeOutlined,
+  MessageOutlined,
+  UnorderedListOutlined,
+  OrderedListOutlined,
+  LinkOutlined
 } from '@ant-design/icons-vue';
 import { useFileTree } from '../composables/useFileTree';
 import { useTabs } from '../composables/useTabs';
@@ -72,10 +80,12 @@ import { message } from 'ant-design-vue';
 
 const { state } = useFileTree();
 const { activeTab } = useTabs();
-const { saveCurrentFile } = useEditor();
+const { saveCurrentFile, triggerAction } = useEditor();
 
 defineEmits(['select-directory', 'toggle-search', 'toggle-git', 'toggle-settings', 'toggle-history']);
 
+const isFileTab = computed(() => activeTab.value && activeTab.value.type === 'file');
+
 const canSave = computed(() => {
   return activeTab.value && activeTab.value.type === 'file' && activeTab.value.isDirty;
 });
diff --git a/src/composables/useEditor.js b/src/composables/useEditor.js
index 7d5a00a..55ae0f2 100644
--- a/src/composables/useEditor.js
+++ b/src/composables/useEditor.js
@@ -38,6 +38,20 @@ export function useEditor() {
 
   return {
     content,
-    saveCurrentFile
+    saveCurrentFile,
+    triggerAction,
+    onEditorAction
   };
 }
+
+// 事件总线
+const listeners = new Set();
+
+const triggerAction = (action, payload) => {
+  listeners.forEach(fn => fn(action, payload));
+};
+
+const onEditorAction = (fn) => {
+  listeners.add(fn);
+  return () => listeners.delete(fn);
+};
diff --git a/src/composables/useMarkdownActions.js b/src/composables/useMarkdownActions.js
new file mode 100644
index 0000000..315153d
--- /dev/null
+++ b/src/composables/useMarkdownActions.js
@@ -0,0 +1,102 @@
+import { EditorSelection } from '@codemirror/state'
+
+export function useMarkdownActions() {
+  const getSelectedLineNumbers = (state) => {
+    const main = state.selection.main
+    const fromLine = state.doc.lineAt(main.from).number
+    const toLine = state.doc.lineAt(main.to).number
+    return { fromLine, toLine }
+  }
+
+  const applyHeading = (view, level) => {
+    if (!view) return
+
+    const { state } = view
+    const { fromLine, toLine } = getSelectedLineNumbers(state)
+    const changes = []
+    const prefix = `${'#'.repeat(level)} `
+
+    for (let ln = toLine; ln >= fromLine; ln -= 1) {
+      const line = state.doc.line(ln)
+      const match = /^(#{1,6})\s+/.exec(line.text)
+      if (match) {
+        const replaceFrom = line.from
+        const replaceTo = line.from + match[0].length
+        changes.push({ from: replaceFrom, to: replaceTo, insert: prefix })
+      } else {
+        changes.push({ from: line.from, to: line.from, insert: prefix })
+      }
+    }
+
+    view.dispatch(state.update({ changes }))
+    view.focus()
+  }
+
+  const wrapSelection = (view, left, right) => {
+    if (!view) return
+
+    const { state } = view
+    const main = state.selection.main
+    const selectedText = state.doc.sliceString(main.from, main.to)
+    const insertText = `${left}${selectedText}${right}`
+
+    const cursorFrom = main.from + left.length
+    const cursorTo = cursorFrom + selectedText.length
+
+    view.dispatch(
+      state.update({
+        changes: { from: main.from, to: main.to, insert: insertText },
+        selection: EditorSelection.single(cursorFrom, cursorTo)
+      })
+    )
+    view.focus()
+  }
+
+  const prefixLines = (view, makePrefix) => {
+    if (!view) return
+
+    const { state } = view
+    const { fromLine, toLine } = getSelectedLineNumbers(state)
+    const changes = []
+
+    for (let ln = toLine; ln >= fromLine; ln -= 1) {
+      const line = state.doc.line(ln)
+      const indentMatch = /^(\s*)/.exec(line.text)
+      const indentLen = indentMatch ? indentMatch[1].length : 0
+      const insertAt = line.from + indentLen
+      const prefix = makePrefix(ln - fromLine)
+      changes.push({ from: insertAt, to: insertAt, insert: prefix })
+    }
+
+    view.dispatch(state.update({ changes }))
+    view.focus()
+  }
+
+  const insertLink = (view) => {
+    if (!view) return
+
+    const { state } = view
+    const main = state.selection.main
+    const selectedText = state.doc.sliceString(main.from, main.to)
+
+    const textPart = selectedText || '链接文字'
+    const insertText = `[${textPart}](https://)`
+    const urlFrom = main.from + 2 + textPart.length
+    const urlTo = urlFrom + 'https://'.length
+
+    view.dispatch(
+      state.update({
+        changes: { from: main.from, to: main.to, insert: insertText },
+        selection: EditorSelection.single(urlFrom, urlTo)
+      })
+    )
+    view.focus()
+  }
+
+  return {
+    applyHeading,
+    wrapSelection,
+    prefixLines,
+    insertLink
+  }
+}
diff --git a/src/composables/useTabs.js b/src/composables/useTabs.js
index 6a28f95..a9a915a 100644
--- a/src/composables/useTabs.js
+++ b/src/composables/useTabs.js
@@ -75,6 +75,23 @@ export function useTabs() {
     state.tabs.splice(index, 1);
   };
 
+  // 关闭其他 Tab
+  const closeOtherTabs = (keepTabId) => {
+    state.tabs = state.tabs.filter(t => t.id === keepTabId || !t.closable);
+    if (state.activeTabId !== keepTabId) {
+        state.activeTabId = keepTabId;
+    }
+  };
+
+  // 关闭所有 Tab (除了不可关闭的，如首页)
+  const closeAllTabs = () => {
+    state.tabs = state.tabs.filter(t => !t.closable);
+    // 如果还有剩余的 Tab（例如首页），激活第一个；否则（理论上应该有首页）保持或重置
+    if (state.tabs.length > 0) {
+        state.activeTabId = state.tabs[0].id;
+    }
+  };
+
   // 切换 Tab
   const activateTab = (tabId) => {
     state.activeTabId = tabId;
@@ -93,6 +110,8 @@ export function useTabs() {
     activeTab,
     openFile,
     closeTab,
+    closeOtherTabs,
+    closeAllTabs,
     activateTab,
     updateTab
   };