public static Task <object> ShowBaseMetroDialog(this MetroWindow window, BaseMetroDialog dialog)
{
window.Dispatcher.VerifyAccess();
return(HandleOverlayOnShow(null, window).ContinueWith(z =>
{
return (Task <object>)window.Dispatcher.Invoke(new Func <Task <object> >(() =>
{
SizeChangedEventHandler sizeHandler = SetupAndOpenDialog(window, dialog);
dialog.SizeChangedHandler = sizeHandler;
return dialog.WaitForLoadAsync().ContinueWith(x =>
{
if (DialogOpened != null)
{
window.Dispatcher.BeginInvoke(new Action(() => DialogOpened(window, new DialogStateChangedEventArgs())));
}
return dialog.WaitForButtonPressAsync().ContinueWith(y =>
{
//once a button as been clicked, begin removing the dialog.
dialog.OnClose();
if (DialogClosed != null)
{
window.Dispatcher.BeginInvoke(new Action(() => DialogClosed(window, new DialogStateChangedEventArgs())));
}
Task closingTask = (Task)window.Dispatcher.Invoke(new Func <Task>(() => dialog._WaitForCloseAsync()));
return closingTask.ContinueWith(a =>
{
return ((Task)window.Dispatcher.Invoke(new Func <Task>(() =>
{
window.SizeChanged -= sizeHandler;
window.RemoveDialog(dialog);
return HandleOverlayOnHide(null, window);
}))).ContinueWith(y3 => y).Unwrap();
});
}).Unwrap();
}).Unwrap().Unwrap();
}));
}).Unwrap());
}