🎨 Modify code block logic

frontend/src/views/editor/extensions/codeblock/annotation.ts

@@ -0,0 +1,53 @@
+import { Annotation, Transaction } from "@codemirror/state";
+
+/**
+ * 统一的 CodeBlock 注解，用于标记内部触发的事务。
+ */
+export const codeBlockEvent = Annotation.define<string>();
+
+export const LANGUAGE_CHANGE = "codeblock-language-change";
+export const ADD_NEW_BLOCK = "codeblock-add-new-block";
+export const MOVE_BLOCK = "codeblock-move-block";
+export const DELETE_BLOCK = "codeblock-delete-block";
+export const CURRENCIES_LOADED = "codeblock-currencies-loaded";
+
+/**
+ * 统一管理的 userEvent 常量，方便复用与检索。
+ */
+export const USER_EVENTS = {
+  INPUT: "input",
+  DELETE: "delete",
+  MOVE: "move",
+  SELECT: "select",
+  DELETE_LINE: "delete.line",
+  DELETE_CUT: "delete.cut",
+  INPUT_PASTE: "input.paste",
+  MOVE_LINE: "move.line",
+  MOVE_CHARACTER: "move.character",
+  SELECT_BLOCK_BOUNDARY: "select.block-boundary",
+} as const;
+
+/**
+ * 判断事务列表中是否包含指定注解。
+ */
+export function transactionsHasAnnotation(
+  transactions: readonly Transaction[],
+  annotation: string
+) {
+  return transactions.some(
+    tr => tr.annotation(codeBlockEvent) === annotation
+  );
+}
+
+/**
+ * 判断事务列表中是否包含任一注解。
+ */
+export function transactionsHasAnnotationsAny(
+  transactions: readonly Transaction[],
+  annotations: readonly string[]
+) {
+  return transactions.some(tr => {
+    const value = tr.annotation(codeBlockEvent);
+    return value ? annotations.includes(value) : false;
+  });
+}