protected virtual void OnPropertyChanged(DependencyPropertyChangedEventArgs e)
{
PropertyMetadata pm = e.Property.GetMetadata(this);
if (pm.PropertyChangedCallback != null)
{
pm.PropertyChangedCallback(this, e);
}
}
internal void RaiseMetadataPropertyChangedCallback(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs e)
{
// metadata's changed callback will be raised for
// - the original owner metadata
// - every attached property metadata
// - every metadata that the currently changed object derives from its owner type
foreach (Type type in GetOrderedTypeMetadata())
{
if (!type.IsInstanceOfType(dependencyObject) && (!IsAttached || type != OwnerType))
{
continue;
}
PropertyMetadata propertyMetadata = typeMetadata[type];
if (propertyMetadata.PropertyChangedCallback != null)
{
propertyMetadata.PropertyChangedCallback(dependencyObject, e);
}
}
}
