/// <summary>
/// Add or remove change listeners as needed
/// </summary>
public void AddOrRemoveChangeListener(ExtensionPropertyChangedEventHandler handler, EventHandlerAction action)
{
IPropertyProvider interfaceInstance;
if (null != (interfaceInstance = myInstance) &&
0 != (interfaceInstance.ProviderFeatures & PropertyProviderFeatures.ChangeNotifications))
{
if (action == EventHandlerAction.Add)
{
interfaceInstance.PropertyChanged += handler;
}
else
{
interfaceInstance.PropertyChanged -= handler;
}
}
}
void IPropertyProviderService.AddOrRemoveChangeListener(Type extendableElementType, ExtensionPropertyChangedEventHandler handler, EventHandlerAction action)
{
if (extendableElementType == null)
{
throw new ArgumentNullException("extendableElementType");
}
if ((object)handler == null)
{
throw new ArgumentNullException("handler");
}
LinkedNode<ProviderInstance> providerNode;
if (myProviderDictionary.TryGetValue(extendableElementType.TypeHandle, out providerNode))
{
while (providerNode != null)
{
providerNode.Value.AddOrRemoveChangeListener(handler, action);
providerNode = providerNode.Next;
}
}
}
/// <summary>
/// Add or remove change listeners as needed
/// </summary>
public void AddOrRemoveChangeListener(ExtensionPropertyChangedEventHandler handler, EventHandlerAction action)
{
IPropertyProvider interfaceInstance;
if (null != (interfaceInstance = myInstance) &&
0 != (interfaceInstance.ProviderFeatures & PropertyProviderFeatures.ChangeNotifications))
{
if (action == EventHandlerAction.Add)
{
interfaceInstance.PropertyChanged += handler;
}
else
{
interfaceInstance.PropertyChanged -= handler;
}
}
}
void IPropertyProviderService.AddOrRemoveChangeListener(Type extendableElementType, ExtensionPropertyChangedEventHandler handler, EventHandlerAction action)
{
if (extendableElementType == null)
{
throw new ArgumentNullException("extendableElementType");
}
if ((object)handler == null)
{
throw new ArgumentNullException("handler");
}
LinkedNode <CountedProviderInstance> providerNode;
if (myProviderDictionary.TryGetValue(extendableElementType.TypeHandle, out providerNode))
{
while (providerNode != null)
{
providerNode.Value.Instance.AddOrRemoveChangeListener(handler, action);
providerNode = providerNode.Next;
}
}
}
