internal void SetDefaultButton()
{
this.Focus();
//kind of acts like a selective 'IsDefault' mechanism.
switch (this.ButtonStyle)
{
case MessageDialogStyle.Affirmative:
PART_AffirmativeButton.Focus();
break;
case MessageDialogStyle.AffirmativeAndNegative:
case MessageDialogStyle.AffirmativeAndNegativeAndDoubleAuxiliary:
case MessageDialogStyle.AffirmativeAndNegativeAndSingleAuxiliary:
PART_NegativeButton.Focus();
break;
}
}
internal Task <MessageDialogResult> WaitForButtonPressAsync()
{
Dispatcher.BeginInvoke(new Action(() =>
{
this.Focus();
//kind of acts like a selective 'IsDefault' mechanism.
if (ButtonStyle == MessageDialogStyle.Affirmative)
{
PART_AffirmativeButton.Focus();
}
else if (ButtonStyle == MessageDialogStyle.AffirmativeAndNegative)
{
PART_NegativeButton.Focus();
}
}));
TaskCompletionSource <MessageDialogResult> tcs = new TaskCompletionSource <MessageDialogResult>();
RoutedEventHandler negativeHandler = null;
KeyEventHandler negativeKeyHandler = null;
RoutedEventHandler affirmativeHandler = null;
KeyEventHandler affirmativeKeyHandler = null;
RoutedEventHandler firstAuxHandler = null;
KeyEventHandler firstAuxKeyHandler = null;
RoutedEventHandler secondAuxHandler = null;
KeyEventHandler secondAuxKeyHandler = null;
Action cleanUpHandlers = () =>
{
PART_NegativeButton.Click -= negativeHandler;
PART_AffirmativeButton.Click -= affirmativeHandler;
PART_FirstAuxiliaryButton.Click -= firstAuxHandler;
PART_SecondAuxiliaryButton.Click -= secondAuxHandler;
PART_NegativeButton.KeyDown -= negativeKeyHandler;
PART_AffirmativeButton.KeyDown -= affirmativeKeyHandler;
PART_FirstAuxiliaryButton.KeyDown -= firstAuxKeyHandler;
PART_SecondAuxiliaryButton.KeyDown -= secondAuxKeyHandler;
};
negativeKeyHandler = new KeyEventHandler((sender, e) =>
{
if (e.Key == Key.Enter)
{
cleanUpHandlers();
tcs.TrySetResult(MessageDialogResult.Negative);
}
});
affirmativeKeyHandler = new KeyEventHandler((sender, e) =>
{
if (e.Key == Key.Enter)
{
cleanUpHandlers();
tcs.TrySetResult(MessageDialogResult.Affirmative);
}
});
firstAuxKeyHandler = new KeyEventHandler((sender, e) =>
{
if (e.Key == Key.Enter)
{
cleanUpHandlers();
tcs.TrySetResult(MessageDialogResult.FirstAuxiliary);
}
});
secondAuxKeyHandler = new KeyEventHandler((sender, e) =>
{
if (e.Key == Key.Enter)
{
cleanUpHandlers();
tcs.TrySetResult(MessageDialogResult.SecondAuxiliary);
}
});
negativeHandler = new RoutedEventHandler((sender, e) =>
{
cleanUpHandlers();
tcs.TrySetResult(MessageDialogResult.Negative);
e.Handled = true;
});
affirmativeHandler = new RoutedEventHandler((sender, e) =>
{
cleanUpHandlers();
tcs.TrySetResult(MessageDialogResult.Affirmative);
e.Handled = true;
});
firstAuxHandler = new RoutedEventHandler((sender, e) =>
{
cleanUpHandlers();
tcs.TrySetResult(MessageDialogResult.FirstAuxiliary);
e.Handled = true;
});
secondAuxHandler = new RoutedEventHandler((sender, e) =>
{
cleanUpHandlers();
tcs.TrySetResult(MessageDialogResult.SecondAuxiliary);
e.Handled = true;
});
PART_NegativeButton.KeyDown += negativeKeyHandler;
PART_AffirmativeButton.KeyDown += affirmativeKeyHandler;
PART_FirstAuxiliaryButton.KeyDown += firstAuxKeyHandler;
PART_SecondAuxiliaryButton.KeyDown += secondAuxKeyHandler;
PART_NegativeButton.Click += negativeHandler;
PART_AffirmativeButton.Click += affirmativeHandler;
PART_FirstAuxiliaryButton.Click += firstAuxHandler;
PART_SecondAuxiliaryButton.Click += secondAuxHandler;
return(tcs.Task);
}
internal Task <MessageDialogResult> WaitForButtonPressAsync()
{
Dispatcher.BeginInvoke(new Action(() => {
this.Focus();
//kind of acts like a selective 'IsDefault' mechanism.
switch (this.ButtonStyle)
{
case MessageDialogStyle.Affirmative:
PART_AffirmativeButton.Focus();
break;
case MessageDialogStyle.AffirmativeAndNegative:
case MessageDialogStyle.AffirmativeAndNegativeAndDoubleAuxiliary:
case MessageDialogStyle.AffirmativeAndNegativeAndSingleAuxiliary:
PART_NegativeButton.Focus();
break;
}
}));
TaskCompletionSource <MessageDialogResult> tcs = new TaskCompletionSource <MessageDialogResult>();
RoutedEventHandler negativeHandler = null;
KeyEventHandler negativeKeyHandler = null;
RoutedEventHandler affirmativeHandler = null;
KeyEventHandler affirmativeKeyHandler = null;
RoutedEventHandler firstAuxHandler = null;
KeyEventHandler firstAuxKeyHandler = null;
RoutedEventHandler secondAuxHandler = null;
KeyEventHandler secondAuxKeyHandler = null;
KeyEventHandler escapeKeyHandler = null;
Action cleanUpHandlers = null;
var cancellationTokenRegistration = DialogSettings.CancellationToken.Register(() =>
{
cleanUpHandlers();
tcs.TrySetResult(ButtonStyle == MessageDialogStyle.Affirmative ? MessageDialogResult.Affirmative : MessageDialogResult.Negative);
});
cleanUpHandlers = () => {
PART_NegativeButton.Click -= negativeHandler;
PART_AffirmativeButton.Click -= affirmativeHandler;
PART_FirstAuxiliaryButton.Click -= firstAuxHandler;
PART_SecondAuxiliaryButton.Click -= secondAuxHandler;
PART_NegativeButton.KeyDown -= negativeKeyHandler;
PART_AffirmativeButton.KeyDown -= affirmativeKeyHandler;
PART_FirstAuxiliaryButton.KeyDown -= firstAuxKeyHandler;
PART_SecondAuxiliaryButton.KeyDown -= secondAuxKeyHandler;
KeyDown -= escapeKeyHandler;
cancellationTokenRegistration.Dispose();
};
negativeKeyHandler = (sender, e) => {
if (e.Key == Key.Enter)
{
cleanUpHandlers();
tcs.TrySetResult(MessageDialogResult.Negative);
}
};
affirmativeKeyHandler = (sender, e) => {
if (e.Key == Key.Enter)
{
cleanUpHandlers();
tcs.TrySetResult(MessageDialogResult.Affirmative);
}
};
firstAuxKeyHandler = (sender, e) => {
if (e.Key == Key.Enter)
{
cleanUpHandlers();
tcs.TrySetResult(MessageDialogResult.FirstAuxiliary);
}
};
secondAuxKeyHandler = (sender, e) => {
if (e.Key == Key.Enter)
{
cleanUpHandlers();
tcs.TrySetResult(MessageDialogResult.SecondAuxiliary);
}
};
negativeHandler = (sender, e) => {
cleanUpHandlers();
tcs.TrySetResult(MessageDialogResult.Negative);
e.Handled = true;
};
affirmativeHandler = (sender, e) => {
cleanUpHandlers();
tcs.TrySetResult(MessageDialogResult.Affirmative);
e.Handled = true;
};
firstAuxHandler = (sender, e) => {
cleanUpHandlers();
tcs.TrySetResult(MessageDialogResult.FirstAuxiliary);
e.Handled = true;
};
secondAuxHandler = (sender, e) => {
cleanUpHandlers();
tcs.TrySetResult(MessageDialogResult.SecondAuxiliary);
e.Handled = true;
};
escapeKeyHandler = (sender, e) => {
if (e.Key == Key.Escape)
{
cleanUpHandlers();
tcs.TrySetResult(ButtonStyle == MessageDialogStyle.Affirmative ? MessageDialogResult.Affirmative : MessageDialogResult.Negative);
}
else if (e.Key == Key.Enter)
{
cleanUpHandlers();
tcs.TrySetResult(MessageDialogResult.Affirmative);
}
};
PART_NegativeButton.KeyDown += negativeKeyHandler;
PART_AffirmativeButton.KeyDown += affirmativeKeyHandler;
PART_FirstAuxiliaryButton.KeyDown += firstAuxKeyHandler;
PART_SecondAuxiliaryButton.KeyDown += secondAuxKeyHandler;
PART_NegativeButton.Click += negativeHandler;
PART_AffirmativeButton.Click += affirmativeHandler;
PART_FirstAuxiliaryButton.Click += firstAuxHandler;
PART_SecondAuxiliaryButton.Click += secondAuxHandler;
KeyDown += escapeKeyHandler;
return(tcs.Task);
}
