LabelModelSourceObserver.h

// Copyright eeGeo Ltd (2012-2014), All Rights Reserved

#pragma once

#include "ILabelModelSourceObserver.h"
#include "LabelModelRepository.h"
#include "Types.h"
#include "CallbackCollection.h"

namespace Eegeo
{
    namespace Labels
    {
        class LabelModelSourceObserver : public ILabelModelSourceObserver, private Eegeo::NonCopyable
        {
        public:
            LabelModelSourceObserver();
            
            ~LabelModelSourceObserver();
            
            
            void RegisterLabelModelAddedCallback(CallbackType& callback);
            
            void RegisterLabelModelRemovedCallback(CallbackType& callback);
            
            void UnregisterLabelModelAddedCallback(CallbackType& callback);
            
            void UnregisterLabelModelRemovedCallback(CallbackType& callback);
            
        private:
            void OnItemAdded(const ItemType& item);
            
            void OnItemRemoved(const ItemType& item);
            
            Helpers::TCallback1<LabelModelSourceObserver, const ItemType> m_labelModelAddedHandler;
            Helpers::TCallback1<LabelModelSourceObserver, const ItemType> m_labelModelRemovedHandler;
            
            Helpers::CallbackCollection1<const Labels::IAnchoredLabel> m_labelAddedCallbacks;
            Helpers::CallbackCollection1<const Labels::IAnchoredLabel> m_labelRemovedCallbacks;
        };
    }
}