// if shouldRemove flag is true, newPropertyValue should be default
void SetOrRemoveProperty(ObjectType obj, PropertyType newPropertyValue, bool shouldRemove = false)
{
APropertyValueWrapper <ObjectType, PropertyType> valueWrapper =
GetValueWrapper(obj);
PropertyType oldPropertyValue = GetCurrentValueFromWrapper(valueWrapper);
if (oldPropertyValue.ObjEquals(newPropertyValue))
{
// do not do or any event firing if the property did not change
// this is important to prevent circlular updates
// in case of the bindings.
return;
}
// check the global BeforePropertyChanged Event
if (BeforePropertyChangedFn != null)
{
// if returned false, do not proceed
if (!BeforePropertyChangedFn(obj, oldPropertyValue, newPropertyValue))
{
return;
}
}
if (!shouldRemove)
{
if (valueWrapper == null)
{
valueWrapper = new APropertyValueWrapper <ObjectType, PropertyType>
{
Obj = obj
};
_objectToPropValueMap.Add(obj, valueWrapper);
}
valueWrapper.APropertyValue = newPropertyValue;
}
else
{
_objectToPropValueMap.Remove(obj);
}
valueWrapper.FireOnPropertyChangedEvent(oldPropertyValue);
if (shouldRemove)
{
valueWrapper.ClearOnPropertyChangedEvent();
}
OnPropertyChangedFn?.Invoke(obj, oldPropertyValue, newPropertyValue);
}
public override void OnPropertyChanged([CallerMemberName] string?propertyName = null) => _methodOnPropertyChangedDelegate?.Invoke(propertyName);
