feat: manually mirror opencoze's code from bytedance

Change-Id: I09a73aadda978ad9511264a756b2ce51f5761adf

frontend/packages/common/editor-plugins/src/shared/hooks/use-editor-readonly.ts

@@ -0,0 +1,41 @@
+/*
+ * Copyright 2025 coze-dev Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+ 
+import { useEffect, useState } from 'react';
+
+import { useEditor } from '@coze-editor/editor/react';
+import { type EditorAPI } from '@coze-editor/editor/preset-prompt';
+import { type ViewUpdate } from '@codemirror/view';
+export const useReadonly = () => {
+  const editor = useEditor<EditorAPI>();
+  const [isReadOnly, setIsReadOnly] = useState(false);
+  useEffect(() => {
+    if (!editor) {
+      return;
+    }
+    setIsReadOnly(editor.$view.state.readOnly);
+    const handleViewUpdate = (update: ViewUpdate) => {
+      if (update.startState.readOnly !== update.state.readOnly) {
+        setIsReadOnly(update.state.readOnly);
+      }
+    };
+    editor.$on('viewUpdate', handleViewUpdate);
+    return () => {
+      editor.$off('viewUpdate', handleViewUpdate);
+    };
+  }, [editor]);
+  return isReadOnly;
+};