/// <summary>
/// Gets the listener recorded for the given owner with the given (unique) resource id.
/// A listener is created if not found and create it set to true.
/// </summary>
/// <remarks>This method is not thread safe.</remarks>
internal static T GetOrCreate <T>(this View view, int resourceId, bool create, Action <T> initialize)
where T : class, new()
{
var listener = (T)view.GetTag(resourceId);
if ((listener == null) && create)
{
listener = new T();
view.SetTag(resourceId, listener);
if (initialize != null)
{
initialize(listener);
}
}
return(listener);
}