using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using Android.App;
using Android.Content;
using Android.OS;
using Android.Runtime;
using Android.Util;
using Android.Views;
using Android.Widget;

namespace CommonLib
{
    public delegate void DialogOK();

    public class MessageBox : DialogFragment
    {
        public Activity parent;
        public string strTitle;
        public string strMessage;
        public string strOK;
        public string strCancel;
        public event DialogOK okEvent = null;

        public static MessageBox NewInstance(Bundle bundle)
        {
            MessageBox fragment = new MessageBox();
            fragment.Arguments = bundle;
            return fragment;
        }

        public static MessageBox Execute(Activity parent, string strTitle, string strMessage, string strOK = "¿¹", string strCancel = "¾Æ´Ï¿À")
        {
            FragmentTransaction ft = parent.FragmentManager.BeginTransaction();
            //Remove fragment else it will crash as it is already added to backstack
            Fragment prev = parent.FragmentManager.FindFragmentByTag("dialog");
            if (prev != null)
            {
                ft.Remove(prev);
            }

            ft.AddToBackStack(null);

            // Create and show the dialog.
            MessageBox newFragment = MessageBox.NewInstance(null);
            newFragment.parent = parent;
            newFragment.strTitle = strTitle;
            newFragment.strMessage = strMessage;
            newFragment.strOK = strOK;
            newFragment.strCancel = strCancel;

            //Add fragment
            newFragment.Show(ft, "dialog");
            return newFragment;
        }

        public override void OnCreate(Bundle savedInstanceState)
        {
            base.OnCreate(savedInstanceState);

            // Create your fragment here
        }

        public override Dialog OnCreateDialog(Bundle savedInstanceState)
        {
            AlertDialog.Builder alert = new AlertDialog.Builder(Activity);
            alert.SetTitle(this.strTitle);
            alert.SetMessage(this.strMessage);
            alert.SetPositiveButton(this.strOK, (senderAlert, args) =>
            {
                if (this.okEvent != null)
                    this.okEvent();
                //                Toast.MakeText(Activity, "Deleted!", ToastLength.Short).Show();
            });
            alert.SetNegativeButton(this.strCancel, (senderAlert, args) =>
            {
            });
            Dialog dialog = alert.Create();
            dialog.Show();
            return dialog;
        }
    }
}