using Lba_Ciac;

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Windows.Forms;

namespace Lbb.Cx.Ciac.Utility

{

    public class WaitingFormHelper

    {

        private Loading waitingForm = null;

        private Action _method = null;

        private WaitingFormHelper(Action method, string message)

        {

            this._method = method;

            this.waitingForm = new Loading();

            this.waitingForm.Text = message;

            this.waitingForm.StartPosition = FormStartPosition.CenterParent;

            this.waitingForm.Shown += new EventHandler(this.waitingForm_Shown);

        }

        public static void ShowWaitingForm(Action method, string message)

        {

            WaitingFormHelper waitingFormHelper = new WaitingFormHelper(method, message);

            waitingFormHelper.waitingForm.ShowDialog();

        }

        private void waitingForm_Shown(object sender, EventArgs e)

        {

            try

            {

                this._method.BeginInvoke(new AsyncCallback(this.callBack), null);

            }

            catch (System.ObjectDisposedException)

            {

                return;//如果主界面已经退出了，那线程也退出好了。

            }

        }

        private void callBack(IAsyncResult ar)

        {

            if (this.waitingForm != null && !this.waitingForm.IsDisposed)

            {

                this.waitingForm.Invoke(new Action(delegate

                {

                    this.waitingForm.Close();

                }));

            }

        }

    }

}