refactor(编辑器): 去掉 vue-codemirror，代码编辑器、协作编辑器、教程编辑器改用自己的薄外壳

三个编辑器只用到它的 v-model、extensions、只读、缩进、占位文字、尺寸和 ready，
shared/components/CodeMirror.vue 照它的做法写了这几样，功能和手感不变：
- 它默认带的 basicSetup（行号、撤销、折叠、搜索、括号……）照样带上
- 各项配置的先后顺序和它一致；外部改代码仍是一次不带 userEvent 的 changes，
  提交时的编辑过程统计不受影响
- @codemirror/commands 现在直接 import，显式声明进依赖

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

apps/web/package.json

@@ -12,6 +12,7 @@
   },
   "dependencies": {
     "@codemirror/autocomplete": "^6.20.3",
+    "@codemirror/commands": "^6.10.4",
     "@codemirror/lang-cpp": "^6.0.3",
     "@codemirror/lang-markdown": "^6.5.2",
     "@codemirror/lang-python": "^6.2.1",
@@ -47,7 +48,6 @@
     "pinyin-pro": "^3.29.5",
     "vue": "^3.5.43",
     "vue-chartjs": "^5.3.4",
-    "vue-codemirror": "^6.1.1",
     "vue-router": "^5.4.0",
     "y-codemirror.next": "^0.3.6",
     "y-protocols": "1.0.7",

apps/web/src/oj/problem/utils/editTrace.ts

@@ -11,7 +11,7 @@ import type { SubmissionTrace } from "@oj2/contract"
  * 直接失效。计数本身也不需要响应式。
  *
  * **只数带 userEvent 的事务。** 下面这些都不带，所以天然不会被算进去：
- * - `codeStore.setCode()` —— vue-codemirror 的 setDoc 只 dispatch 一个 changes：
+ * - `codeStore.setCode()` —— shared/components/CodeMirror.vue 同步 v-model 时只 dispatch 一个 changes：
  *   提交前的自动格式化、载入草稿 / 模板、切语言都走这条；
  * - 课堂协作里对方的改动 —— y-codemirror.next 应用远程更新时只挂 ySyncAnnotation。
  *

apps/web/src/shared/components/CodeEditor.vue

@@ -3,7 +3,7 @@ import { cpp } from "@codemirror/lang-cpp"
 import { python } from "@codemirror/lang-python"
 import { sql, SQLite } from "@codemirror/lang-sql"
 import { bracketMatching } from "@codemirror/language"
-import { Codemirror } from "vue-codemirror"
+import CodeMirror from "./CodeMirror.vue"
 import type { Extension } from "@codemirror/state"
 import { autocompletion, closeBrackets, completeAnyWord } from "@codemirror/autocomplete"
 import type { LANGUAGE } from "utils/types"
@@ -53,13 +53,13 @@ const extensions = computed(() => [
 </script>
 
 <template>
-  <Codemirror
+  <CodeMirror
     v-model="code"
-    indentWithTab
     :extensions="extensions"
     :disabled="readonly"
     :tab-size="4"
     :placeholder="placeholder"
-    :style="{ height, fontSize: `${fontSize}px` }"
+    :height="height"
+    :font-size="`${fontSize}px`"
   />
 </template>

apps/web/src/shared/components/CodeMirror.vue

@@ -0,0 +1,115 @@
+<script setup lang="ts">
+/**
+ * CodeMirror 6 的 Vue 外壳，代码编辑器、协作编辑器、教程编辑器共用。
+ *
+ * 原来是 vue-codemirror，三个编辑器只用到它的 v-model、extensions、只读、缩进、
+ * 占位文字、尺寸和 ready 这几样，这里照它的做法写了这几样：
+ * - **basicSetup 是它默认带的**（行号、撤销、折叠、搜索、括号……），这里也带上，
+ *   漏了编辑器会少一大截功能；
+ * - 各项配置的先后顺序和它一致（同优先级下排前面的赢），换掉之后行为不变。
+ */
+import { basicSetup } from "codemirror"
+import { indentWithTab } from "@codemirror/commands"
+import { indentUnit } from "@codemirror/language"
+import { Compartment, EditorState, type Extension } from "@codemirror/state"
+import { EditorView, keymap, placeholder as placeholderExt } from "@codemirror/view"
+
+const {
+  extensions = [],
+  disabled = false,
+  tabSize = 4,
+  placeholder = "",
+  height = "100%",
+  fontSize = "",
+} = defineProps<{
+  /** 传稳定的数组实例：每换一个新数组，编辑器就重配一次 */
+  extensions?: Extension[]
+  disabled?: boolean
+  tabSize?: number
+  placeholder?: string
+  height?: string
+  fontSize?: string
+}>()
+const code = defineModel<string>({ default: "" })
+const emit = defineEmits<{ ready: [view: EditorView] }>()
+
+const container = useTemplateRef("container")
+let view: EditorView | null = null
+
+const compartments = {
+  extensions: new Compartment(),
+  disabled: new Compartment(),
+  tabSize: new Compartment(),
+  placeholder: new Compartment(),
+  size: new Compartment(),
+}
+
+const disabledExt = (value: boolean) =>
+  value ? [EditorView.editable.of(false), EditorState.readOnly.of(true)] : []
+const tabSizeExt = (size: number) => [EditorState.tabSize.of(size), indentUnit.of(" ".repeat(size))]
+const placeholderOf = (text: string) => (text ? placeholderExt(text) : [])
+const sizeExt = (h: string, fs: string) =>
+  EditorView.theme({ "&": fs ? { height: h, fontSize: fs } : { height: h } })
+
+onMounted(() => {
+  view = new EditorView({
+    parent: container.value!,
+    state: EditorState.create({
+      doc: code.value,
+      extensions: [
+        basicSetup,
+        EditorView.updateListener.of((update) => {
+          if (!update.docChanged) return
+          const doc = update.state.doc.toString()
+          if (doc !== code.value) code.value = doc
+        }),
+        compartments.extensions.of(extensions),
+        compartments.disabled.of(disabledExt(disabled)),
+        keymap.of([indentWithTab]),
+        compartments.tabSize.of(tabSizeExt(tabSize)),
+        compartments.placeholder.of(placeholderOf(placeholder)),
+        compartments.size.of(sizeExt(height, fontSize)),
+      ],
+    }),
+  })
+  emit("ready", view)
+})
+
+onBeforeUnmount(() => {
+  view?.destroy()
+  view = null
+})
+
+function reconfigure(compartment: Compartment, extension: Extension) {
+  view?.dispatch({ effects: compartment.reconfigure(extension) })
+}
+
+watch(code, (value) => {
+  if (!view) return
+  const current = view.state.doc.toString()
+  if (value === current) return
+  view.dispatch({ changes: { from: 0, to: current.length, insert: value } })
+})
+watch(
+  () => extensions,
+  (value) => reconfigure(compartments.extensions, value),
+)
+watch(
+  () => disabled,
+  (value) => reconfigure(compartments.disabled, disabledExt(value)),
+)
+watch(
+  () => tabSize,
+  (value) => reconfigure(compartments.tabSize, tabSizeExt(value)),
+)
+watch(
+  () => placeholder,
+  (value) => reconfigure(compartments.placeholder, placeholderOf(value)),
+)
+watch([() => height, () => fontSize], ([h, fs]) => reconfigure(compartments.size, sizeExt(h, fs)))
+</script>
+
+<template>
+  <!-- display: contents，和原来 vue-codemirror 的外层一样不占布局 -->
+  <div ref="container" style="display: contents" />
+</template>

apps/web/src/shared/components/MarkdownEditor.vue

@@ -3,7 +3,7 @@ import { markdown } from "@codemirror/lang-markdown"
 import { EditorSelection } from "@codemirror/state"
 import { EditorView, keymap } from "@codemirror/view"
 import { Icon } from "@iconify/vue"
-import { Codemirror } from "vue-codemirror"
+import CodeMirror from "./CodeMirror.vue"
 import { uploadImage } from "../../admin/api"
 import { styleTheme } from "../extensions/baseTheme"
 import { oneDark } from "../themes/oneDark"
@@ -196,12 +196,12 @@ const tools = computed(() => [
       <input ref="fileInput" type="file" accept="image/*" multiple hidden @change="onPickImages" />
     </div>
     <div class="body">
-      <Codemirror
+      <CodeMirror
         v-model="modelValue"
         :extensions="extensions"
         :tab-size="4"
-        :style="{ height: '100%', fontSize: '14px' }"
+        font-size="14px"
-        @ready="view = $event.view"
+        @ready="view = $event"
       />
     </div>
   </div>

apps/web/src/shared/components/SyncCodeEditor.vue

@@ -1,6 +1,6 @@
 <script lang="ts" setup>
 import { bracketMatching } from "@codemirror/language"
-import { Codemirror } from "vue-codemirror"
+import CodeMirror from "./CodeMirror.vue"
 import { autocompletion, closeBrackets, completeAnyWord } from "@codemirror/autocomplete"
 import type { EditorView } from "@codemirror/view"
 import type { Extension } from "@codemirror/state"
@@ -68,10 +68,6 @@ const extensions = computed(() => [
   ...extraExtensions,
 ])
 
-interface EditorReadyPayload {
-  view: EditorView
-}
-
 // shallowRef，不是 ref：CodeMirror 的 EditorView 是带 getter 的类实例，
 // Vue 的 UnwrapRef 深度展开会把它结构化成一个丢了原型方法的假类型，
 // vue-tsc 会报 "missing dispatchTransactions/_root/..." 这类莫名其妙的错。
@@ -123,11 +119,11 @@ const detach = () => {
   if (wasBound && collabStore.room) collabStore.leave("left")
 }
 
-const handleEditorReady = (payload: EditorReadyPayload) => {
+const handleEditorReady = (view: EditorView) => {
-  editorView.value = payload.view
+  editorView.value = view
   // 也从这里起：学生排队时切去看提交记录、老师在这期间接了单，
   // 等他切回来时 room 早就非空了，只靠下面的 watch 是等不到的
-  bind(payload.view)
+  bind(view)
 }
 
 /**
@@ -206,14 +202,14 @@ onUnmounted(() => {
 </script>
 
 <template>
-  <Codemirror
+  <CodeMirror
     v-model="code"
-    indentWithTab
     :extensions="extensions"
     :disabled="readonly"
     :tab-size="4"
     :placeholder="placeholder"
-    :style="{ height, fontSize: `${fontSize}px` }"
+    :height="height"
+    :font-size="`${fontSize}px`"
     @ready="handleEditorReady"
   />
 </template>

bun.lock

@@ -41,6 +41,7 @@
       "version": "1.9.0",
       "dependencies": {
         "@codemirror/autocomplete": "^6.20.3",
+        "@codemirror/commands": "^6.10.4",
         "@codemirror/lang-cpp": "^6.0.3",
         "@codemirror/lang-markdown": "^6.5.2",
         "@codemirror/lang-python": "^6.2.1",
@@ -76,7 +77,6 @@
         "pinyin-pro": "^3.29.5",
         "vue": "^3.5.43",
         "vue-chartjs": "^5.3.4",
-        "vue-codemirror": "^6.1.1",
         "vue-router": "^5.4.0",
         "y-codemirror.next": "^0.3.6",
         "y-protocols": "1.0.7",
@@ -1565,8 +1565,6 @@
 
     "vue-chartjs": ["vue-chartjs@5.3.4", "https://registry.npmjs.com/vue-chartjs/-/vue-chartjs-5.3.4.tgz", { "peerDependencies": { "chart.js": "^4.1.1", "vue": "^3.0.0-0 || ^2.7.0" } }, "sha512-x3Fqob8RQvrTdssfi9ecsCzEkFOd8JPmNwSkSQzdfKj/uBsRJs/Y88cZcZIEcPsTVfMGwMo4MOoihoDG2DoE/g=="],
 
-    "vue-codemirror": ["vue-codemirror@6.1.1", "https://registry.npmjs.com/vue-codemirror/-/vue-codemirror-6.1.1.tgz", { "dependencies": { "@codemirror/commands": "6.x", "@codemirror/language": "6.x", "@codemirror/state": "6.x", "@codemirror/view": "6.x" }, "peerDependencies": { "codemirror": "6.x", "vue": "3.x" } }, "sha512-rTAYo44owd282yVxKtJtnOi7ERAcXTeviwoPXjIc6K/IQYUsoDkzPvw/JDFtSP6T7Cz/2g3EHaEyeyaQCKoDMg=="],
-
     "vue-demi": ["vue-demi@0.14.10", "https://registry.npmjs.com/vue-demi/-/vue-demi-0.14.10.tgz", { "peerDependencies": { "@vue/composition-api": "^1.0.0-rc.1", "vue": "^3.0.0-0 || ^2.6.0" }, "optionalPeers": ["@vue/composition-api"], "bin": { "vue-demi-fix": "bin/vue-demi-fix.js", "vue-demi-switch": "bin/vue-demi-switch.js" } }, "sha512-nMZBOwuzabUO0nLgIcc6rycZEebF6eeUfaiQx9+WSk8e29IbLvPU9feI6tqW4kTo3hvoYAJkMh8n8D0fuISphg=="],
 
     "vue-router": ["vue-router@5.4.0", "https://registry.npmjs.com/vue-router/-/vue-router-5.4.0.tgz", { "dependencies": { "@vue-macros/common": "^3.1.3", "@vue/devtools-api": "^8.1.5", "ast-walker-scope": "^0.10.0", "chokidar": "^5.0.0", "confbox": "^0.3.1", "local-pkg": "^1.2.1", "magic-string": "^1.4.3", "mlly": "^1.8.2", "muggle-string": "^0.4.1", "nostics": "^1.3.0", "pathe": "^2.0.3", "picomatch": "^4.0.7", "scule": "^1.3.0", "tinyglobby": "^0.2.17", "unplugin": "^3.4.0", "unplugin-utils": "^0.3.2" }, "peerDependencies": { "@pinia/colada": ">=0.21.2", "@vue/compiler-sfc": "^3.5.34 || ^4.0.0", "pinia": "^3.0.4 || ^4.0.2", "vite": "^7.3.0 || ^8.0.0", "vue": "^3.5.34 || ^4.0.0" }, "optionalPeers": ["@pinia/colada", "@vue/compiler-sfc", "pinia", "vite"] }, "sha512-pFvcYcxinDHjZUlf7AzFBrT8r8Xqvv4uMHoJnjc+EqPawXQvHTkF8S4tfSmQLpriVHUGfkaKlI7Et0KRjTMTdw=="],