weakref.hxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
 
#ifndef INCLUDED_CPPUHELPER_WEAKREF_HXX
#define INCLUDED_CPPUHELPER_WEAKREF_HXX
 
#include "sal/config.h"
 
#include <cstddef>
 
#include "com/sun/star/uno/Reference.hxx"
#include "com/sun/star/uno/XInterface.hpp"
#include "cppuhelper/cppuhelperdllapi.h"
 
 
namespace com
{
namespace sun
{
namespace star
{
namespace uno
{
 
class OWeakRefListener;
class XWeak;
 
class CPPUHELPER_DLLPUBLIC WeakReferenceHelper
{
public:
    WeakReferenceHelper()
        : m_pImpl( NULL )
        {}
 
    WeakReferenceHelper( const WeakReferenceHelper & rWeakRef );
 
#if defined LIBO_INTERNAL_ONLY
    WeakReferenceHelper(WeakReferenceHelper && other) noexcept : m_pImpl(other.m_pImpl)
    { other.m_pImpl = nullptr; }
#endif
 
    WeakReferenceHelper( const css::uno::Reference< css::uno::XInterface > & xInt );
 
#if defined LIBO_INTERNAL_ONLY
    WeakReferenceHelper( const css::uno::Reference< css::uno::XWeak > & xWeak );
#endif
 
    ~WeakReferenceHelper();
 
    WeakReferenceHelper & SAL_CALL operator = ( const WeakReferenceHelper & rWeakRef );
 
#if defined LIBO_INTERNAL_ONLY
    WeakReferenceHelper & operator =(WeakReferenceHelper && other);
#endif
 
    WeakReferenceHelper & SAL_CALL operator = (
            const css::uno::Reference< css::uno::XInterface > & xInt );
 
#if defined LIBO_INTERNAL_ONLY
    WeakReferenceHelper & operator = (
            const css::uno::Reference< css::uno::XWeak > & xWeak );
#endif
 
    bool SAL_CALL operator == ( const WeakReferenceHelper & rObj ) const
        { return (get() == rObj.get()); }
 
    css::uno::Reference< css::uno::XInterface > SAL_CALL get() const;
 
    SAL_CALL operator Reference< XInterface > () const
        { return get(); }
 
    void SAL_CALL clear();
 
protected:
    OWeakRefListener * m_pImpl;
};
 
template< class interface_type >
class SAL_WARN_UNUSED WeakReference : public WeakReferenceHelper
{
public:
    WeakReference()
        : WeakReferenceHelper()
        {}
 
    WeakReference( const Reference< interface_type > & rRef )
        : WeakReferenceHelper( rRef )
        {}
 
    WeakReference & SAL_CALL operator = (
            const css::uno::Reference< interface_type > & xInt )
        { WeakReferenceHelper::operator=(xInt); return *this; }
 
#if defined LIBO_INTERNAL_ONLY
    WeakReference & operator = (
            const css::uno::Reference< css::uno::XWeak > & xWeak )
        { WeakReferenceHelper::operator=(xWeak); return *this; }
#endif
 
    SAL_CALL operator Reference< interface_type > () const
        { return Reference< interface_type >::query( get() ); }
};
 
}
}
}
}
 
#endif
 
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