UPDATE: VERSION-20260327

modeler/src/utils/event.ts

@@ -1,7 +1,7 @@
 /*
  * This file is part of the kernelstudio package.
  *
- * (c) 2014-2025 zlin <admin@kernelstudio.com>
+ * (c) 2014-2026 zlin <admin@kernelstudio.com>
  *
  * For the full copyright and license information, please view the LICENSE file
  * that was distributed with this source code.
@@ -23,14 +23,14 @@ export class EventError {
 
 export class EventListener {
 
-  private readonly _listeners: Record<string, Function[]>;
+  private _listeners: Record<string, Function[]>;
 
   constructor(listeners: Record<string, Function[]> = {}) {
     this._listeners = listeners;
   }
 
   all(): Record<string, Function[]> {
-    return {...this._listeners}; // 返回副本，避免外部直接修改
+    return { ...this._listeners }; // 返回副本，避免外部直接修改
   }
 
   has(name: string): boolean {
@@ -55,16 +55,24 @@ export class EventListener {
       [...listeners].forEach(f => f(options));
     }
   }
+
+  clear(){
+    for (const key in this._listeners) {
+      if (this._listeners.hasOwnProperty(key)) {
+        delete this._listeners[key];
+      }
+    }
+  }
 }
 
 export const safePreventDefault = (event: any) => {
   if (event && typeof event.preventDefault === 'function') {
     event.preventDefault();
   }
-}
+};
 
 export const safeStopPropagation = (event: any) => {
   if (event && typeof event.stopPropagation === 'function') {
     event.stopPropagation();
   }
-}
+};