public static bool Change <T>(
this IPropertyOwner owner, T oldValue, T value, Action setter, [CallerMemberName] string propertyName = null,
params string[] derivedProperties)
{
if (AreEqual(oldValue, value))
{
return(false);
}
string isDefaultedPropertyName = PropertyOwnerExtensions.IsDefaultedPropertyName(propertyName);
bool isDefaultedChange = owner.HasProperty(isDefaultedPropertyName) &&
(owner.IsDefaulted(propertyName) ^ ((object)value is null));
PropertyChangeNotifier.OnChanging(owner, propertyName);
if (isDefaultedChange)
{
PropertyChangeNotifier.OnChanging(owner, isDefaultedPropertyName);
}
if (derivedProperties?.Any() ?? false)
{
PropertyChangeNotifier.OnChanging(owner, derivedProperties);
}
setter();
PropertyChangeNotifier.OnChanged(owner, propertyName);
if (isDefaultedChange)
{
PropertyChangeNotifier.OnChanged(owner, isDefaultedPropertyName);
}
if (derivedProperties?.Any() ?? false)
{
PropertyChangeNotifier.OnChanged(owner, derivedProperties);
}
return(true);
}
