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using System;
using System.Windows;
using System.Windows.Controls;
namespace Gestor.Application.Helpers
{
public static class PasswordBoxAssistant
{
public readonly static DependencyProperty BoundPassword;
public readonly static DependencyProperty BindPassword;
private readonly static DependencyProperty UpdatingPassword;
static PasswordBoxAssistant()
{
PasswordBoxAssistant.BoundPassword = DependencyProperty.RegisterAttached("BoundPassword", typeof(string), typeof(PasswordBoxAssistant), new PropertyMetadata(string.Empty, new PropertyChangedCallback(PasswordBoxAssistant.OnBoundPasswordChanged)));
PasswordBoxAssistant.BindPassword = DependencyProperty.RegisterAttached("BindPassword", typeof(bool), typeof(PasswordBoxAssistant), new PropertyMetadata(false, new PropertyChangedCallback(PasswordBoxAssistant.OnBindPasswordChanged)));
PasswordBoxAssistant.UpdatingPassword = DependencyProperty.RegisterAttached("UpdatingPassword", typeof(bool), typeof(PasswordBoxAssistant), new PropertyMetadata(false));
}
public static bool GetBindPassword(DependencyObject dp)
{
return (bool)dp.GetValue(PasswordBoxAssistant.BindPassword);
}
public static string GetBoundPassword(DependencyObject dp)
{
return (string)dp.GetValue(PasswordBoxAssistant.BoundPassword);
}
private static bool GetUpdatingPassword(DependencyObject dp)
{
return (bool)dp.GetValue(PasswordBoxAssistant.UpdatingPassword);
}
private static void HandlePasswordChanged(object sender, RoutedEventArgs e)
{
PasswordBox passwordBox = sender as PasswordBox;
PasswordBoxAssistant.SetUpdatingPassword(passwordBox, true);
PasswordBoxAssistant.SetBoundPassword(passwordBox, passwordBox.Password);
PasswordBoxAssistant.SetUpdatingPassword(passwordBox, false);
}
private static void OnBindPasswordChanged(DependencyObject dp, DependencyPropertyChangedEventArgs e)
{
PasswordBox passwordBox = dp as PasswordBox;
if (passwordBox == null)
{
return;
}
bool oldValue = (bool)e.OldValue;
bool newValue = (bool)e.NewValue;
if (oldValue)
{
passwordBox.PasswordChanged -= new RoutedEventHandler(PasswordBoxAssistant.HandlePasswordChanged);
}
if (newValue)
{
passwordBox.PasswordChanged += new RoutedEventHandler(PasswordBoxAssistant.HandlePasswordChanged);
}
}
private static void OnBoundPasswordChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
PasswordBox passwordBox = d as PasswordBox;
if (d == null || !PasswordBoxAssistant.GetBindPassword(d))
{
return;
}
passwordBox.PasswordChanged -= new RoutedEventHandler(PasswordBoxAssistant.HandlePasswordChanged);
string newValue = (string)e.NewValue;
if (!PasswordBoxAssistant.GetUpdatingPassword(passwordBox))
{
passwordBox.Password = newValue;
}
passwordBox.PasswordChanged += new RoutedEventHandler(PasswordBoxAssistant.HandlePasswordChanged);
}
public static void SetBindPassword(DependencyObject dp, bool value)
{
dp.SetValue(PasswordBoxAssistant.BindPassword, value);
}
public static void SetBoundPassword(DependencyObject dp, string value)
{
dp.SetValue(PasswordBoxAssistant.BoundPassword, value);
}
private static void SetUpdatingPassword(DependencyObject dp, bool value)
{
dp.SetValue(PasswordBoxAssistant.UpdatingPassword, value);
}
}
}
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