using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;

namespace SamplePreSystem.UI.BaseControls
{
    public class PasswordAttaExt
    {


        public static string GetCustomPwd(DependencyObject obj)
        {
            return (string)obj.GetValue(CustomPwdProperty);
        }

        public static void SetCustomPwd(DependencyObject obj, string value)
        {
            obj.SetValue(CustomPwdProperty, value);
        }

        // Using a DependencyProperty as the backing store for CustomPwd.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty CustomPwdProperty =
            DependencyProperty.RegisterAttached("CustomPwd", typeof(string), typeof(PasswordAttaExt), new PropertyMetadata("", OnPropertyChangeBack));

        private static void OnPropertyChangeBack(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            PasswordBox pb = d as PasswordBox;
            if (pb != null)
            {
                if (e.NewValue.ToString() != pb.Password)
                {
                    pb.Password = e.NewValue.ToString();
                }

            }

        }


        #region 设置事件绑定触发条件


        public static bool GetIsOpenPwdBading(DependencyObject obj)
        {
            return (bool)obj.GetValue(IsOpenPwdBadingProperty);
        }

        public static void SetIsOpenPwdBading(DependencyObject obj, bool value)
        {
            obj.SetValue(IsOpenPwdBadingProperty, value);
        }

        // Using a DependencyProperty as the backing store for IsOpenPwdBading.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty IsOpenPwdBadingProperty =
            DependencyProperty.RegisterAttached("IsOpenPwdBading", typeof(bool), typeof(PasswordAttaExt), new PropertyMetadata(false, OnValEventChangeBack));

        private static void OnValEventChangeBack(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            PasswordBox pd = d as PasswordBox;
            if (pd != null)
            {
                pd.PasswordChanged -= Pd_PasswordChanged;
                pd.PasswordChanged += Pd_PasswordChanged;
            }

        }

        private static void Pd_PasswordChanged(object sender, RoutedEventArgs e)
        {
            PasswordBox pb = sender as PasswordBox;
            if (pb != null)
            {
                SetCustomPwd((DependencyObject)sender, pb.Password);

            }

        }


        #endregion
    }
}