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Attribute.inl
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Attribute.inl
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template< class T >
Helium::Attribute< T >::ChangeArgs::ChangeArgs( const T& oldValue, const T& newValue )
: m_OldValue( oldValue )
, m_NewValue( newValue )
{
}
template< class T >
Helium::Attribute< T >::ChangingArgs::ChangingArgs( const T& oldValue, const T& newValue )
: ChangeArgs( oldValue, newValue )
, m_Veto( false )
{
}
template< class T >
Helium::Attribute< T >::Attribute()
: m_Value ()
{
}
template< class T >
Helium::Attribute< T >::Attribute( const T& value )
: m_Value ( value )
{
}
template< class T >
T& Helium::Attribute< T >::Value()
{
return m_Value;
}
template< class T >
const T& Helium::Attribute< T >::Get() const
{
return m_Value;
}
template< class T >
bool Helium::Attribute< T >::Set(const T& value)
{
if ( m_Value != value )
{
ChangingArgs args ( m_Value, value );
m_Changing.Raise( args );
if ( !args.m_Veto )
{
T previous = m_Value;
m_Value = value;
m_Changed.Raise( ChangeArgs( previous, m_Value ) );
return true;
}
}
return false;
}
template< class T >
typename Helium::Attribute< T >::ChangingSignature::Event& Helium::Attribute< T >::Changing()
{
return m_Changing;
}
template< class T >
typename Helium::Attribute< T >::ChangedSignature::Event& Helium::Attribute< T >::Changed()
{
return m_Changed;
}
template< class T >
void Helium::Attribute< T >::RaiseChanged( const T& previous )
{
m_Changed.Raise( ChangeArgs( previous, m_Value ) );
}