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#ifndef _VCL_GTKINST_HXX
#define _VCL_GTKINST_HXX

#include <salinst.h>
#include <salsys.h>

class GtkYieldMutex : public SalYieldMutex
{
public:
                                                GtkYieldMutex();
    virtual void								acquire();
    virtual void								release();
    virtual sal_Bool 							tryToAcquire();

    virtual int Grab();
    virtual void Ungrab( int );

    class GtkYieldGuard
    {
        GtkYieldMutex*	m_pMutex;
        int				m_nGrab;
    public:
        GtkYieldGuard( GtkYieldMutex* pMutex ) 
                : m_pMutex( pMutex )
        {
            m_nGrab = m_pMutex->Grab();
        }
        ~GtkYieldGuard()
        {
            m_pMutex->Ungrab( m_nGrab );
        }
    };
};

class GtkHookedYieldMutex : public GtkYieldMutex
{
    virtual int		 Grab()				{ return 0; };
    virtual void	 Ungrab(int )		{};
    std::list<sal_uLong> aYieldStack;
public:
    GtkHookedYieldMutex();
    virtual void      acquire();
    virtual void      release();
    virtual sal_Bool  tryToAcquire() { return SalYieldMutex::tryToAcquire(); }
    void ThreadsEnter();
    void ThreadsLeave();
};


#define GTK_YIELD_GRAB() GtkYieldMutex::GtkYieldGuard aLocalGtkYieldGuard( static_cast<GtkYieldMutex*>(GetSalData()->m_pInstance->GetYieldMutex()) )

class GtkInstance : public X11SalInstance
{
public:
    GtkInstance( SalYieldMutex* pMutex ) 
            : X11SalInstance( pMutex )
    {}
    virtual ~GtkInstance();

    virtual SalFrame*			CreateFrame( SalFrame* pParent, sal_uLong nStyle );
    virtual SalFrame*           CreateChildFrame( SystemParentData* pParent, sal_uLong nStyle );
    virtual SalObject*			CreateObject( SalFrame* pParent, SystemWindowData* pWindowData, sal_Bool bShow = sal_True );
    virtual SalSystem*			CreateSalSystem();
    virtual void                AddToRecentDocumentList(const rtl::OUString& rFileUrl, const rtl::OUString& rMimeType);
};

class GtkSalSystem : public X11SalSystem
{
public:
    GtkSalSystem() : X11SalSystem() {}
    virtual ~GtkSalSystem();
    virtual int ShowNativeDialog( const String& rTitle,
                                  const String& rMessage,
                                  const std::list< String >& rButtons,
                                  int nDefButton );
};

#endif // _VCL_GTKINST_HXX

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