private void CleanupSubscription(PropertyChangedSubscription sub)
{
List <PropertyChangedSubscription> subsForProperty;
if (subscribers.TryGetValue(sub.PropertyName, out subsForProperty) == false)
{
throw new KeyNotFoundException("The given subscription was not found");
}
subsForProperty.Remove(sub);
if (subsForProperty.Count == 0)
{
subscribers.Remove(sub.PropertyName);
}
}
/// <summary>
/// Subscribes to be notified when the given property changes.
/// </summary>
/// <param name="propertyName">The name of the property to subscribe to or ObservableObject.AnyProperty if you want to be notified of any property change.</param>
/// <param name="handler">The action to call for notifications</param>
/// <returns>A subscription that will receive notifications until it is disposed</returns>
public IDisposable SubscribeUnmanaged(string propertyName, Action handler)
{
if (propertyName.Contains(".") == false)
{
var sub = new PropertyChangedSubscription(propertyName, handler, CleanupSubscription);
List <PropertyChangedSubscription> subsForProperty;
if (subscribers.TryGetValue(propertyName, out subsForProperty) == false)
{
subsForProperty = new List <PropertyChangedSubscription>();
subscribers.Add(propertyName, subsForProperty);
}
subsForProperty.Add(sub);
return(sub);
}
else
{
return(DeepSubscribeInternal(propertyName, handler));
}
}
