public Task <SwitchProfileResult> WaitForButtonPressAsync()
{
Dispatcher.BeginInvoke(new Action(() =>
{
this.Focus();
PART_ProfileComboBox.Focus();
}));
var tcs = new TaskCompletionSource <SwitchProfileResult>();
RoutedEventHandler negativeHandler = null;
KeyEventHandler negativeKeyHandler = null;
RoutedEventHandler affirmativeHandler = null;
KeyEventHandler affirmativeKeyHandler = null;
RoutedEventHandler importHandler = null;
RoutedEventHandler newProfileHandler = null;
KeyEventHandler escapeKeyHandler = null;
Action cleanUpHandlers = () =>
{
this.KeyDown -= escapeKeyHandler;
PART_NegativeButton.Click -= negativeHandler;
PART_AffirmativeButton.Click -= affirmativeHandler;
PART_NewProfileButton.Click -= newProfileHandler;
PART_NegativeButton.KeyDown -= negativeKeyHandler;
PART_AffirmativeButton.KeyDown -= affirmativeKeyHandler;
};
escapeKeyHandler = (sender, e) =>
{
if (e.Key == Key.Escape)
{
cleanUpHandlers();
tcs.TrySetResult(null);
}
};
negativeKeyHandler = (sender, e) =>
{
if (e.Key == Key.Enter)
{
cleanUpHandlers();
tcs.TrySetResult(null);
}
};
affirmativeKeyHandler = (sender, e) =>
{
if (e.Key == Key.Enter)
{
cleanUpHandlers();
tcs.TrySetResult(new SwitchProfileResult()
{
Input = this.Input, Result = SwitchProfileDialogResult.OK
});
}
};
negativeHandler = (sender, e) =>
{
cleanUpHandlers();
tcs.TrySetResult(null);
e.Handled = true;
};
affirmativeHandler = (sender, e) =>
{
cleanUpHandlers();
tcs.TrySetResult(new SwitchProfileResult()
{
Input = this.Input, Result = SwitchProfileDialogResult.OK
});
e.Handled = true;
};
importHandler = (sender, e) =>
{
OpenFileDialog dialog = new OpenFileDialog();
dialog.InitialDirectory = Environment.CurrentDirectory;
dialog.Multiselect = false;
if (dialog.ShowDialog() != true)
{
return;
}
string fileName = dialog.FileName;
if (string.IsNullOrEmpty(fileName))
{
return;
}
cleanUpHandlers();
tcs.TrySetResult(new SwitchProfileResult()
{
Input = fileName, Result = SwitchProfileDialogResult.Import
});
e.Handled = true;
};
newProfileHandler = (sender, e) =>
{
cleanUpHandlers();
tcs.TrySetResult(new SwitchProfileResult()
{
Input = string.Empty, Result = SwitchProfileDialogResult.New
});
e.Handled = true;
};
PART_NegativeButton.KeyDown += negativeKeyHandler;
PART_AffirmativeButton.KeyDown += affirmativeKeyHandler;
this.KeyDown += escapeKeyHandler;
PART_NegativeButton.Click += negativeHandler;
PART_AffirmativeButton.Click += affirmativeHandler;
PART_ImportButton.Click += importHandler;
PART_NewProfileButton.Click += newProfileHandler;
return(tcs.Task);
}