本文介绍了一个名为DeleteItemInterceptor的类，该类通过MessageInterceptor注解定义了购物车商品删除事件的处理流程。当触发删除操作时，系统会弹出警告框询问用户是否确定删除商品，如果用户确认，则继续执行删除操作。
public class DeleteItemInterceptor {
[MessageInterceptor(type="com.bookstore.events.ShoppingCartDeleteEvent")]
public function interceptDeleteEvent (processor:MessageProcessor) : void {
var listener:Function = function (event:CloseEvent) : void {
if (event.detail == Alert.OK) {
processor.proceed();
}
};
Alert.show("Do you really want to delete this item?", "Warning",
Alert.OK | Alert.CANCEL, null, listener);
}
}
[MessageInterceptor(type="com.bookstore.events.ShoppingCartDeleteEvent")]
public function interceptDeleteEvent (processor:MessageProcessor) : void {
var listener:Function = function (event:CloseEvent) : void {
if (event.detail == Alert.OK) {
processor.proceed();
}
};
Alert.show("Do you really want to delete this item?", "Warning",
Alert.OK | Alert.CANCEL, null, listener);
}
}
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