插件回调问题

namespace FairyEditor.Dialog

{

    public class InputDialog : DialogBase

    {

        Action<string> _callback;



        public InputDialog()

        {

            this.contentPane = UIPackage.CreateObject("Builder", "InputDialog").asCom;

            this.modal = true;

            this.frame.text = App.GetString(84);

            contentPane.GetChild("ok").onClick.Add(ActionEventHandler);

            contentPane.GetChild("cancel").onClick.Add(closeEventHandler);

        }



        public void Open(string prompt, string content = null, Action<string> callback = null)

        {

            Show();

            this.contentPane.GetChild("prompt").text = prompt;

            this.contentPane.GetChild("input").text = content;

            _callback = callback;

            this.Center(true);

        }



        override public void ActionHandler()

        {

            this.Hide();

            Action<string> f = _callback;

            _callback = null;

            if (f != null)

                f(this.contentPane.GetChild("input").text);

        }

    }

}