IObserver.h

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// SPDX-License-Identifier: LGPL-2.1-or-later OR GPL-2.0-or-later OR GPL-3.0-or-later OR LicenseRef-ACF-Commercial
#pragma once
 
 
// ACF includes
#include <istd/IPolymorphic.h>
#include <istd/IChangeable.h>
#include <imod/imod.h>
 
 
namespace imod
{
 
 
class IModel;
 
 
class IObserver: virtual public istd::IPolymorphic
{
public:
       virtual bool IsModelAttached(const IModel* modelPtr = NULL) const = 0;
       
       virtual bool OnModelAttached(IModel* modelPtr, istd::IChangeable::ChangeSet& changeMask) = 0;
 
       virtual bool OnModelDetached(IModel* modelPtr) = 0;
 
       virtual void BeforeUpdate(IModel* modelPtr) = 0;
 
       virtual void AfterUpdate(IModel* modelPtr, const istd::IChangeable::ChangeSet& changeSet) = 0;
};
 
 
typedef istd::TUniqueInterfacePtr<imod::IObserver> IObserverPtr;
 
 
} // namespace imod