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Attribute.h
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Attribute.h
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#pragma once
#include "Event.h"
namespace Helium
{
template< class T >
class Attribute
{
public:
struct ChangeArgs
{
ChangeArgs( const T& oldValue, const T& newValue );
const T& m_OldValue;
const T& m_NewValue;
};
struct ChangingArgs : public ChangeArgs
{
ChangingArgs( const T& oldValue, const T& newValue );
mutable bool m_Veto;
};
typedef Helium::Signature< const ChangingArgs& > ChangingSignature;
typedef Helium::Signature< const ChangeArgs& > ChangedSignature;
Attribute();
Attribute( const T& value );
T& Value();
const T& Get() const;
bool Set(const T& value);
typename ChangingSignature::Event& Changing();
typename ChangedSignature::Event& Changed();
void RaiseChanged( const T& previous = T() );
protected:
T m_Value;
typename ChangingSignature::Event m_Changing;
typename ChangedSignature::Event m_Changed;
};
}
#include "Foundation/Attribute.inl"