protected static MetroWindow GetMetroWindow(object context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
if (!DialogParticipation.IsRegistered(context))
{
throw new InvalidOperationException(
"Context is not registered. Consider using DialogParticipation.Register in XAML to bind in the DataContext.");
}
var association = DialogParticipation.GetAssociation(context);
var metroWindow = association.Invoke(() => Window.GetWindow(association) as MetroWindow);
if (metroWindow == null)
{
throw new InvalidOperationException("Control is not inside a MetroWindow.");
}
return(metroWindow);
}
private static async Task <MetroWindow> GetMetroWindowAsync(object context)
{
if (context == null)
{
throw new ArgumentNullException("context");
}
if (!DialogParticipation.IsRegistered(context))
{
var tcs = new TaskCompletionSource <DependencyObject>();
ContextRegistrationChangedEventHandler handler = null;
handler = (c, o) =>
{
if (c == context)
{
DialogParticipation.ContextRegistrationChanged -= handler;
tcs.TrySetResult(o);
}
};
DialogParticipation.ContextRegistrationChanged += handler;
var task = tcs.Task;
if (await task.WithTimeout(TimeSpan.FromSeconds(2)))
{
return(AssociationToWindow(task.Result));
}
else
{
throw new InvalidOperationException(
"Context is not registered. Consider using DialogParticipation.Register in XAML to bind in the DataContext.");
}
}
var association = DialogParticipation.GetAssociation(context);
return(AssociationToWindow(association));
}