fix: improve CodeEditor controlled mode, prevent unnecessary trimming (#6221)

* fix: improve CodeEditor controlled mode, prevent unnecessary trimming

* fix: useEffect dependency

src/renderer/src/components/CodeBlockView/index.tsx

@@ -199,12 +199,11 @@ const CodeBlockView: React.FC<Props> = ({ children, language, onSave }) => {
 
   // 源代码视图组件
   const sourceView = useMemo(() => {
-    const SourceView = codeEditor.enabled ? CodeEditor : CodePreview
+    if (codeEditor.enabled) {
-    return (
+      return <CodeEditor value={children} language={language} onSave={onSave} options={{ stream: true }} />
-      <SourceView language={language} onSave={onSave}>
+    } else {
-        {children}
+      return <CodePreview language={language}>{children}</CodePreview>
-      </SourceView>
+    }
-    )
   }, [children, codeEditor.enabled, language, onSave])
 
   // 特殊视图组件映射

src/renderer/src/components/CodeEditor/hook.ts

@@ -0,0 +1,65 @@
+import { useCodeStyle } from '@renderer/context/CodeStyleProvider'
+import { Extension } from '@uiw/react-codemirror'
+import { useEffect, useState } from 'react'
+
+let linterPromise: Promise<any> | null = null
+function importLintPackage() {
+  if (!linterPromise) {
+    linterPromise = import('@codemirror/lint').then((mod) => mod.linter)
+  }
+  return linterPromise
+}
+
+// 语言对应的 linter 加载器
+const linterLoaders: Record<string, () => Promise<any>> = {
+  json: async () => {
+    const [linter, jsonParseLinter] = await Promise.all([
+      importLintPackage(),
+      import('@codemirror/lang-json').then((mod) => mod.jsonParseLinter)
+    ])
+    return linter(jsonParseLinter())
+  }
+}
+
+export const useLanguageExtensions = (language: string, lint?: boolean) => {
+  const { languageMap } = useCodeStyle()
+  const [extensions, setExtensions] = useState<Extension[]>([])
+
+  // 加载语言
+  useEffect(() => {
+    let normalizedLang = languageMap[language as keyof typeof languageMap] || language.toLowerCase()
+
+    // 如果语言名包含 `-`，转换为驼峰命名法
+    if (normalizedLang.includes('-')) {
+      normalizedLang = normalizedLang.replace(/-([a-z])/g, (_, char) => char.toUpperCase())
+    }
+
+    import('@uiw/codemirror-extensions-langs')
+      .then(({ loadLanguage }) => {
+        const extension = loadLanguage(normalizedLang as any)
+        if (extension) {
+          setExtensions((prev) => [...prev, extension])
+        }
+      })
+      .catch((error) => {
+        console.debug(`Failed to load language: ${normalizedLang}`, error)
+      })
+  }, [language, languageMap])
+
+  useEffect(() => {
+    if (!lint) return
+
+    const loader = linterLoaders[language]
+    if (loader) {
+      loader()
+        .then((extension) => {
+          setExtensions((prev) => [...prev, extension])
+        })
+        .catch((error) => {
+          console.error(`Failed to load linter for ${language}`, error)
+        })
+    }
+  }, [language, lint])
+
+  return extensions
+}

src/renderer/src/components/CodeEditor/index.tsx

@@ -14,17 +14,23 @@ import { useCallback, useEffect, useMemo, useRef, useState } from 'react'
 import { memo } from 'react'
 import { useTranslation } from 'react-i18next'
 
+import { useLanguageExtensions } from './hook'
+
 // 标记非用户编辑的变更
 const External = Annotation.define<boolean>()
 
 interface Props {
-  children: string
+  value: string
+  placeholder?: string | HTMLElement
   language: string
   onSave?: (newContent: string) => void
   onChange?: (newContent: string) => void
+  minHeight?: string
   maxHeight?: string
   /** 用于覆写编辑器的某些设置 */
   options?: {
+    stream?: boolean // 用于流式响应场景，默认 false
+    lint?: boolean
     collapsible?: boolean
     wrappable?: boolean
     keymap?: boolean
@@ -36,11 +42,22 @@ interface Props {
 }
 
 /**
- * 源代码编辑器，基于 CodeMirror
+ * 源代码编辑器，基于 CodeMirror，封装了 ReactCodeMirror。
  *
  * 目前必须和 CodeToolbar 配合使用。
  */
-const CodeEditor = ({ children, language, onSave, onChange, maxHeight, options, extensions, style }: Props) => {
+const CodeEditor = ({
+  value,
+  placeholder,
+  language,
+  onSave,
+  onChange,
+  minHeight,
+  maxHeight,
+  options,
+  extensions,
+  style
+}: Props) => {
   const {
     fontSize,
     codeShowLineNumbers: _lineNumbers,
@@ -61,38 +78,18 @@ const CodeEditor = ({ children, language, onSave, onChange, maxHeight, options,
     }
   }, [codeEditor, _lineNumbers, options])
 
-  const { activeCmTheme, languageMap } = useCodeStyle()
+  const { activeCmTheme } = useCodeStyle()
   const [isExpanded, setIsExpanded] = useState(!collapsible)
   const [isUnwrapped, setIsUnwrapped] = useState(!wrappable)
-  const initialContent = useRef(children?.trimEnd() ?? '')
+  const initialContent = useRef(options?.stream ? (value ?? '').trimEnd() : (value ?? ''))
-  const [langExtension, setLangExtension] = useState<Extension[]>([])
   const [editorReady, setEditorReady] = useState(false)
   const editorViewRef = useRef<EditorView | null>(null)
   const { t } = useTranslation()
 
+  const langExtensions = useLanguageExtensions(language, options?.lint)
+
   const { registerTool, removeTool } = useCodeToolbar()
 
-  // 加载语言
-  useEffect(() => {
-    let normalizedLang = languageMap[language as keyof typeof languageMap] || language.toLowerCase()
-
-    // 如果语言名包含 `-`，转换为驼峰命名法
-    if (normalizedLang.includes('-')) {
-      normalizedLang = normalizedLang.replace(/-([a-z])/g, (_, char) => char.toUpperCase())
-    }
-
-    import('@uiw/codemirror-extensions-langs')
-      .then(({ loadLanguage }) => {
-        const extension = loadLanguage(normalizedLang as any)
-        if (extension) {
-          setLangExtension([extension])
-        }
-      })
-      .catch((error) => {
-        console.debug(`Failed to load language: ${normalizedLang}`, error)
-      })
-  }, [language, languageMap])
-
   // 展开/折叠工具
   useEffect(() => {
     registerTool({
@@ -144,7 +141,7 @@ const CodeEditor = ({ children, language, onSave, onChange, maxHeight, options,
   useEffect(() => {
     if (!editorViewRef.current) return
 
-    const newContent = children?.trimEnd() ?? ''
+    const newContent = options?.stream ? (value ?? '').trimEnd() : (value ?? '')
     const currentDoc = editorViewRef.current.state.doc.toString()
 
     const changes = prepareCodeChanges(currentDoc, newContent)
@@ -155,7 +152,7 @@ const CodeEditor = ({ children, language, onSave, onChange, maxHeight, options,
         annotations: [External.of(true)]
       })
     }
-  }, [children])
+  }, [options?.stream, value])
 
   useEffect(() => {
     setIsExpanded(!collapsible)
@@ -182,17 +179,19 @@ const CodeEditor = ({ children, language, onSave, onChange, maxHeight, options,
   const customExtensions = useMemo(() => {
     return [
       ...(extensions ?? []),
-      ...langExtension,
+      ...langExtensions,
       ...(isUnwrapped ? [] : [EditorView.lineWrapping]),
       ...(enableKeymap ? [saveKeymap] : [])
     ]
-  }, [extensions, langExtension, isUnwrapped, enableKeymap, saveKeymap])
+  }, [extensions, langExtensions, isUnwrapped, enableKeymap, saveKeymap])
 
   return (
     <CodeMirror
       // 维持一个稳定值，避免触发 CodeMirror 重置
       value={initialContent.current}
+      placeholder={placeholder}
       width="100%"
+      minHeight={minHeight}
       maxHeight={collapsible && !isExpanded ? (maxHeight ?? '350px') : 'none'}
       editable={true}
       // @ts-ignore 强制使用，见 react-codemirror 的 Example.tsx

src/renderer/src/pages/settings/MCPSettings/AddMcpServerModal.tsx

@@ -4,9 +4,8 @@ import { CodeToolbarProvider } from '@renderer/components/CodeToolbar'
 import { useAppDispatch } from '@renderer/store'
 import { setMCPServerActive } from '@renderer/store/mcp'
 import { MCPServer } from '@renderer/types'
-import { Extension } from '@uiw/react-codemirror'
 import { Form, Modal } from 'antd'
-import { FC, useCallback, useEffect, useState } from 'react'
+import { FC, useCallback, useState } from 'react'
 import { useTranslation } from 'react-i18next'
 
 interface AddMcpServerModalProps {
@@ -57,23 +56,6 @@ const AddMcpServerModal: FC<AddMcpServerModalProps> = ({ visible, onClose, onSuc
   const [form] = Form.useForm()
   const [loading, setLoading] = useState(false)
   const dispatch = useAppDispatch()
-  const [editorExtensions, setEditorExtensions] = useState<Extension[]>([]) // 新增 editorExtensions 狀態
-
-  // 載入 CodeMirror JSON Linter 擴充功能
-  useEffect(() => {
-    let isMounted = true
-    Promise.all([
-      import('@codemirror/lang-json').then((mod) => mod.jsonParseLinter),
-      import('@codemirror/lint').then((mod) => mod.linter)
-    ]).then(([jsonParseLinter, linter]) => {
-      if (isMounted) {
-        setEditorExtensions([linter(jsonParseLinter())])
-      }
-    })
-    return () => {
-      isMounted = false
-    }
-  }, [])
 
   const handleOk = async () => {
     try {
@@ -177,10 +159,14 @@ const AddMcpServerModal: FC<AddMcpServerModalProps> = ({ visible, onClose, onSuc
           rules={[{ required: true, message: t('settings.mcp.addServer.importFrom.placeholder') }]}>
           <CodeToolbarProvider>
             <CodeEditor
+              // 如果表單值為空，顯示範例 JSON；否則顯示表單值
+              value={serverConfigValue}
+              placeholder={initialJsonExample}
               language="json"
               onChange={handleEditorChange}
               maxHeight="300px"
               options={{
+                lint: true,
                 collapsible: true,
                 wrappable: true,
                 lineNumbers: true,
@@ -188,11 +174,7 @@ const AddMcpServerModal: FC<AddMcpServerModalProps> = ({ visible, onClose, onSuc
                 highlightActiveLine: true,
                 keymap: true
               }}
-              extensions={editorExtensions}
+            />
-              // 如果表單值為空，顯示範例 JSON；否則顯示表單值
-            >
-              {serverConfigValue ?? initialJsonExample}
-            </CodeEditor>
           </CodeToolbarProvider>
         </Form.Item>
       </Form>

src/renderer/src/pages/settings/MCPSettings/EditMcpJsonPopup.tsx

@@ -4,17 +4,16 @@ import { TopView } from '@renderer/components/TopView'
 import { useAppDispatch, useAppSelector } from '@renderer/store'
 import { setMCPServers } from '@renderer/store/mcp'
 import { MCPServer } from '@renderer/types'
-import { Extension } from '@uiw/react-codemirror'
 import { Modal, Typography } from 'antd'
-import { useCallback, useEffect, useState } from 'react'
+import { useEffect, useState } from 'react'
 import { useTranslation } from 'react-i18next'
+
 interface Props {
   resolve: (data: any) => void
 }
 
 const PopupContainer: React.FC<Props> = ({ resolve }) => {
   const [open, setOpen] = useState(true)
-  const [editorExtensions, setEditorExtensions] = useState<Extension[]>([])
   const [jsonConfig, setJsonConfig] = useState('')
   const [jsonSaving, setJsonSaving] = useState(false)
   const [jsonError, setJsonError] = useState('')
@@ -23,21 +22,6 @@ const PopupContainer: React.FC<Props> = ({ resolve }) => {
   const dispatch = useAppDispatch()
   const { t } = useTranslation()
 
-  useEffect(() => {
-    let isMounted = true
-    Promise.all([
-      import('@codemirror/lang-json').then((mod) => mod.jsonParseLinter),
-      import('@codemirror/lint').then((mod) => mod.linter)
-    ]).then(([jsonParseLinter, linter]) => {
-      if (isMounted) {
-        setEditorExtensions([linter(jsonParseLinter())])
-      }
-    })
-    return () => {
-      isMounted = false
-    }
-  }, [])
-
   useEffect(() => {
     try {
       const mcpServersObj: Record<string, any> = {}
@@ -116,10 +100,6 @@ const PopupContainer: React.FC<Props> = ({ resolve }) => {
     resolve({})
   }
 
-  const handleChange = useCallback((newContent: string) => {
-    setJsonConfig(newContent)
-  }, [])
-
   EditMcpJsonPopup.hide = onCancel
 
   return (
@@ -143,10 +123,12 @@ const PopupContainer: React.FC<Props> = ({ resolve }) => {
         <div style={{ marginBottom: '16px' }}>
           <CodeToolbarProvider>
             <CodeEditor
+              value={jsonConfig}
               language="json"
-              onChange={handleChange}
+              onChange={(value) => setJsonConfig(value)}
               maxHeight="60vh"
               options={{
+                lint: true,
                 collapsible: true,
                 wrappable: true,
                 lineNumbers: true,
@@ -154,9 +136,7 @@ const PopupContainer: React.FC<Props> = ({ resolve }) => {
                 highlightActiveLine: true,
                 keymap: true
               }}
-              extensions={editorExtensions}>
+            />
-              {jsonConfig}
-            </CodeEditor>
           </CodeToolbarProvider>
         </div>
       )}