♻️ Refactor cursor position cache

frontend/src/stores/documentStore.ts

@@ -70,12 +70,11 @@ export const useDocumentStore = defineStore('document', () => {
     // 在新窗口中打开文档
     const openDocumentInNewWindow = async (docId: number): Promise<boolean> => {
         try {
-            await OpenDocumentWindow(docId);
             const tabStore = useTabStore();
             if (tabStore.isTabsEnabled && tabStore.hasTab(docId)) {
                 tabStore.closeTab(docId);
             }
-            
+            await OpenDocumentWindow(docId);
             return true;
         } catch (error) {
             console.error('Failed to open document in new window:', error);

frontend/src/stores/editorStore.ts

@@ -13,6 +13,7 @@ import {createFontExtensionFromBackend, updateFontConfig} from '@/views/editor/b
 import {createStatsUpdateExtension} from '@/views/editor/basic/statsExtension';
 import {createContentChangePlugin} from '@/views/editor/basic/contentChangeExtension';
 import {createWheelZoomExtension} from '@/views/editor/basic/wheelZoomExtension';
+import {createCursorPositionExtension, scrollToCursor} from '@/views/editor/basic/cursorPositionExtension';
 import {createDynamicKeymapExtension, updateKeymapExtension} from '@/views/editor/keymap';
 import {
     createDynamicExtensions,
@@ -21,7 +22,7 @@ import {
     setExtensionManagerView
 } from '@/views/editor/manager';
 import {useExtensionStore} from './extensionStore';
-import createCodeBlockExtension, {blockState} from "@/views/editor/extensions/codeblock";
+import createCodeBlockExtension from "@/views/editor/extensions/codeblock";
 import {LruCache} from '@/common/utils/lruCache';
 import {AsyncManager} from '@/common/utils/asyncManager';
 import {generateContentHash} from "@/common/utils/hashUtils";
@@ -35,7 +36,7 @@ export interface DocumentStats {
     selectedCharacters: number;
 }
 
-// 修复：只保存光标位置，恢复时自动滚动到光标处（更简单可靠）
+// 修复：只保存光标位置，恢复时自动滚动到光标处
 export interface EditorViewState {
     cursorPos: number;
 }
@@ -180,6 +181,9 @@ export const useEditorStore = defineStore('editor', () => {
             enableAutoDetection: true
         });
 
+        // 光标位置持久化扩展
+        const cursorPositionExtension = createCursorPositionExtension(documentId);
+
         // 再次检查操作有效性
         if (!operationManager.isOperationValid(operationId, documentId)) {
             throw new Error('Operation cancelled');
@@ -212,13 +216,23 @@ export const useEditorStore = defineStore('editor', () => {
             statsExtension,
             contentChangeExtension,
             codeBlockExtension,
+            cursorPositionExtension,
             ...dynamicExtensions,
         ];
 
-        // 创建编辑器状态
+        // 获取保存的光标位置
+        const savedState = documentStore.documentStates[documentId];
+        const docLength = content.length;
+        const initialCursorPos = savedState?.cursorPos !== undefined 
+            ? Math.min(savedState.cursorPos, docLength) 
+            : docLength;
+
+
+        // 创建编辑器状态，设置初始光标位置
         const state = EditorState.create({
             doc: content,
-            extensions
+            extensions,
+            selection: { anchor: initialCursorPos, head: initialCursorPos }
         });
 
         return new EditorView({
@@ -316,6 +330,9 @@ export const useEditorStore = defineStore('editor', () => {
             //使用 nextTick + requestAnimationFrame 确保 DOM 完全渲染
             nextTick(() => {
                 requestAnimationFrame(() => {
+                    // 滚动到当前光标位置
+                    scrollToCursor(instance.view);
+                    
                     // 聚焦编辑器
                     instance.view.focus();
                     
@@ -487,15 +504,6 @@ export const useEditorStore = defineStore('editor', () => {
                     await saveEditorContent(documentId);
                 }
 
-                // 保存光标位置
-                if (instance.view && instance.view.state) {
-                    const currentState: EditorViewState = {
-                        cursorPos: instance.view.state.selection.main.head
-                    };
-                    // 保存到 documentStore 用于持久化
-                    documentStore.documentStates[documentId] = currentState;
-                }
-
                 // 清除自动保存定时器
                 instance.autoSaveTimer.clear();
 
@@ -578,22 +586,10 @@ export const useEditorStore = defineStore('editor', () => {
         operationManager.cancelAllOperations();
         
         editorCache.clear((_documentId, instance) => {
-            // 修复：清空前只保存光标位置
-            if (instance.view) {
-                const currentState: EditorViewState = {
-                    cursorPos: instance.view.state.selection.main.head
-                };
-                // 同时保存到实例和 documentStore
-                instance.editorState = currentState;
-                documentStore.documentStates[instance.documentId] = currentState;
-            }
-            
             // 清除自动保存定时器
             instance.autoSaveTimer.clear();
-            
             // 从扩展管理器移除
             removeExtensionManagerView(instance.documentId);
-            
             // 移除DOM元素
             if (instance.view.dom.parentElement) {
                 instance.view.dom.remove();

frontend/src/stores/tabStore.ts

@@ -156,10 +156,10 @@ export const useTabStore = defineStore('tab', () => {
      */
     const validateTabs = () => {
         const validDocIds = Object.keys(documentStore.documents).map(Number);
-        
+
         // 找出无效的标签页（文档已被删除）
         const invalidTabIds = tabOrder.value.filter(docId => !validDocIds.includes(docId));
-        
+
         if (invalidTabIds.length > 0) {
             // 批量清理无效标签页
             invalidTabIds.forEach(docId => {
@@ -175,7 +175,7 @@ export const useTabStore = defineStore('tab', () => {
     const initializeTab = () => {
         // 先验证并清理无效的标签页（处理持久化的脏数据）
         validateTabs();
-        
+
         if (isTabsEnabled.value) {
             const currentDoc = documentStore.currentDocument;
             if (currentDoc) {
@@ -254,7 +254,7 @@ export const useTabStore = defineStore('tab', () => {
     return {
         tabsMap,
         tabOrder,
-        
+
         // 状态
         tabs: readonly(tabs),
         draggedTabId,
@@ -283,9 +283,5 @@ export const useTabStore = defineStore('tab', () => {
         getTab
     };
 }, {
-    persist: {
-        key: 'voidraft-tabs',
-        storage: localStorage,
-        pick: ['tabsMap', 'tabOrder'],
-    },
+    persist: false,
 });

frontend/src/views/editor/basic/cursorPositionExtension.ts

@@ -0,0 +1,67 @@
+import {EditorView, ViewPlugin, ViewUpdate} from '@codemirror/view';
+import {useDocumentStore} from '@/stores/documentStore';
+import {createDebounce} from '@/common/utils/debounce';
+
+/**
+ * 光标位置持久化扩展
+ * 实时监听光标位置变化并持久化到 documentStore
+ */
+export function createCursorPositionExtension(documentId: number) {
+  return ViewPlugin.fromClass(
+    class CursorPositionPlugin {
+      private readonly documentStore = useDocumentStore();
+      private readonly debouncedSave;
+
+      constructor(private view: EditorView) {
+        const { debouncedFn, flush } = createDebounce(
+          () => this.saveCursorPosition(),
+          { delay: 400 }
+        );
+        this.debouncedSave = { fn: debouncedFn, flush };
+
+        // 初始化时保存一次光标位置
+        this.saveCursorPosition();
+      }
+
+      update(update: ViewUpdate) {
+        // 只在选择变化时触发
+        if (!update.selectionSet) {
+          return;
+        }
+
+        // 防抖保存光标位置
+        this.debouncedSave.fn();
+      }
+
+      destroy() {
+        // 销毁时立即执行待保存的操作
+        this.debouncedSave.flush();
+        // 再保存一次确保最新状态
+        this.saveCursorPosition();
+      }
+
+      private saveCursorPosition() {
+        const cursorPos = this.view.state.selection.main.head;
+        // 持久化到 documentStore
+        this.documentStore.documentStates[documentId] = {
+            cursorPos
+        };
+      }
+    }
+  );
+}
+
+/**
+ * 滚动到当前光标位置（视口中心）
+ * @param view 编辑器视图
+ */
+export function scrollToCursor(view: EditorView) {
+  const cursorPos = view.state.selection.main.head;
+  view.dispatch({
+    effects: EditorView.scrollIntoView(cursorPos, {
+      y: 'center',
+      x: 'center'
+    })
+  });
+}
+