diff --git a/demo-edit-es-module/module/editor.d.ts b/demo-edit-es-module/module/editor.d.ts
index 34b7bb51e..500603daf 100644
--- a/demo-edit-es-module/module/editor.d.ts
+++ b/demo-edit-es-module/module/editor.d.ts
@@ -304,11 +304,11 @@ export interface IEditorView extends View, HasTheme, Focusable {
   getController(): EditorViewController;
 
   onControllerUpdate: IEvent<EditorViewController>
-}
 
-export interface EditorView extends IEditorView, IDisposable {
   setReadonly(flag: boolean): void
+}
 
+export interface EditorView extends IEditorView, IDisposable {
   setModel(model: ITextModel): void
 
   onDidChangeModel: IEvent<IModelChangedEvent>
diff --git a/demo-edit-es-module/src/main/java/org/sudu/experiments/esm/JsEditorView.java b/demo-edit-es-module/src/main/java/org/sudu/experiments/esm/JsEditorView.java
index 599bc3b98..b7bc9011c 100644
--- a/demo-edit-es-module/src/main/java/org/sudu/experiments/esm/JsEditorView.java
+++ b/demo-edit-es-module/src/main/java/org/sudu/experiments/esm/JsEditorView.java
@@ -4,7 +4,6 @@
 import org.sudu.experiments.js.JsFunctions;
 
 public interface JsEditorView extends JsIEditorView {
-  void setReadonly(boolean flag);
   void setModel(JsITextModel model);
   JsDisposable onDidChangeModel(JsFunctions.Consumer<JsIModelChangedEvent> f);
 }
diff --git a/demo-edit-es-module/src/main/java/org/sudu/experiments/esm/JsIEditorView.java b/demo-edit-es-module/src/main/java/org/sudu/experiments/esm/JsIEditorView.java
index 805f99f3a..6ebb4fbef 100644
--- a/demo-edit-es-module/src/main/java/org/sudu/experiments/esm/JsIEditorView.java
+++ b/demo-edit-es-module/src/main/java/org/sudu/experiments/esm/JsIEditorView.java
@@ -23,4 +23,5 @@ public interface JsIEditorView extends JsView {
   void revealPosition(JsPosition position);
 
   JsEditorViewController getController();
+  void setReadonly(boolean flag);
 }
diff --git a/demo-edit-es-module/src/main/java/org/sudu/experiments/esm/JsRemoteEditor.java b/demo-edit-es-module/src/main/java/org/sudu/experiments/esm/JsRemoteEditor.java
index ded46c9d2..559135a9f 100644
--- a/demo-edit-es-module/src/main/java/org/sudu/experiments/esm/JsRemoteEditor.java
+++ b/demo-edit-es-module/src/main/java/org/sudu/experiments/esm/JsRemoteEditor.java
@@ -188,4 +188,9 @@ public void setExternalDialogProvider(JsDialogProvider opener) {}
 
   @Override
   public void setExternalMessageBar(JsExternalMessageBar emb) {}
+
+  @Override
+  public void setReadonly(boolean flag) {
+    editor.readonly = flag;
+  }
 }