public override void Dispose()
{
if (_child != null)
{
ObjectInstance.Tree.RemoveKey(_child.WrappedObject);
_child.Dispose();
}
using (NotificationGate.BeginOutbound())
{
ObjectInstance.ClearValue(ClassProperty.DependencyProperty);
}
_depProperty.Dispose();
}
public ObjectPropertyAtom(IObjectInstance objectInstance, ClassProperty classProperty, bool hasChildObject)
: base(objectInstance, classProperty)
{
_hasChildObject = hasChildObject;
if (ClassProperty.CanRead)
{
// When the property is out of date, update it from the wrapped object.
_depProperty = new Computed(delegate
{
object value = ClassProperty.GetObjectValue(ObjectInstance.WrappedObject);
if (_hasChildObject)
{
IObjectInstance oldChild = _child;
object oldValue = oldChild == null ? null : oldChild.WrappedObject;
_child = null;
IObjectInstance wrapper;
if (value == null)
{
wrapper = null;
}
else if (value == oldValue)
{
wrapper = oldChild;
_child = wrapper;
}
else
{
if (WrapObject(value, out wrapper))
{
_child = wrapper;
}
}
ClassProperty.SetUserOutput(ObjectInstance, wrapper);
if (oldChild != _child && oldChild != null)
{
ObjectInstance.Tree.RemoveKey(oldValue);
oldChild.Dispose();
}
}
else
{
ClassProperty.SetUserOutput(ObjectInstance, value);
}
});
}
}
