/// <summary>
/// Shows a dialog asynchronously
/// </summary>
/// <param name="sender">The object that is launching the dialog</param>
/// <param name="dialog">The dialog to be shown</param>
/// <returns>The task that is used to open the dialog or null if no listener is found</returns>
public static Task ShowDialogAsync(object sender, BaseDialog dialog)
{
var type = sender.GetType();
DialogContainer genericListener = null,
specificListener = null;
foreach (var listener in _Listeners)
{
if (listener.Item2.Equals(type))
{
// We found a listener specific for that type, so let's use that
specificListener = listener.Item1;
break;
}
else if (listener.Item2.IsAssignableFrom(type))
{
/* In case we don't find a specific listener, use any that subscribed
* for a type that is a parent class of the sender
*
* For example, if the sender is a Window and we find no one listening
* for that specific type, we could use someone who's listening for an
* UIElement. */
genericListener = listener.Item1;
}
}
if (specificListener != null)
{
specificListener.DisplayDialogAsync(dialog);
return(dialog.WaitForLoadAsync());
}
else if (genericListener != null)
{
genericListener.DisplayDialogAsync(dialog);
return(dialog.WaitForLoadAsync());
}
_DialogsOnQueue.Add(new Tuple <Type, BaseDialog>(type, dialog));
return(null);
}
