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#ifndef INCLUDED_VCL_INC_UNX_SCREENSAVERINHIBITOR_HXX
#define INCLUDED_VCL_INC_UNX_SCREENSAVERINHIBITOR_HXX

#include <X11/Xlib.h>
#include <X11/Xutil.h>
#if !defined(SOLARIS) && !defined(AIX)
#include <X11/extensions/dpms.h>
#endif

#include <rtl/ustring.hxx>
#include <vcl/dllapi.h>

#include <boost/optional.hpp>

class VCL_PLUGIN_PUBLIC ScreenSaverInhibitor
{
public:
    void inhibit( bool bInhibit, const rtl::OUString& sReason,
                  bool bIsX11, const boost::optional<unsigned int> xid, boost::optional<Display*> pDisplay );

private:
    // These are all used as guint, however this header may be included
    // in kde/tde/etc backends, where we would ideally avoid having
    // any glib dependencies, hence the direct use of unsigned int.
    boost::optional<unsigned int> mnFDOCookie; // FDO ScreenSaver Inhibit
    boost::optional<unsigned int> mnFDOPMCookie; // FDO PowerManagement Inhibit
    boost::optional<unsigned int> mnGSMCookie;
    boost::optional<unsigned int> mnMSMCookie;

    boost::optional<int> mnXScreenSaverTimeout;

#if !defined(SOLARIS) && !defined(AIX)
    BOOL mbDPMSWasEnabled;
    CARD16 mnDPMSStandbyTimeout;
    CARD16 mnDPMSSuspendTimeout;
    CARD16 mnDPMSOffTimeout;
#endif

    // There are a bunch of different dbus based inhibition APIs. Some call
    // themselves ScreenSaver inhibition, some are PowerManagement inhibition,
    // but they appear to have the same effect. There doesn't appear to be one
    // all encompassing standard, hence we should just try all of tem.
    //
    // The current APIs we have: (note: the list of supported environments is incomplete)
    // FDO: org.freedesktop.ScreenSaver::Inhibit - appears to be supported only by KDE?
    // FDOPM: org.freedesktop.PowerManagement.Inhibit::Inhibit - XFCE, (KDE) ?
    //        (KDE: doesn't inhibit screensaver, but does inhibit PowerManagement)
    // GSM: org.gnome.SessionManager::Inhibit - gnome 3
    // MSM: org.mate.Sessionmanager::Inhibit - Mate <= 1.10, is identical to GSM
    //       (This is replaced by the GSM interface from Mate 1.12 onwards)
    //
    // Note: the Uninhibit call has different spelling in FDO (UnInhibit) vs GSM (Uninhibit)
    void inhibitFDO( bool bInhibit, const char* appname, const char* reason );
    void inhibitFDOPM( bool bInhibit, const char* appname, const char* reason );
    void inhibitGSM( bool bInhibit, const char* appname, const char* reason, const unsigned int xid );
    void inhibitMSM( bool bInhibit, const char* appname, const char* reason, const unsigned int xid );

    void inhibitXScreenSaver( bool bInhibit, Display* pDisplay );
    static void inhibitXAutoLock( bool bInhibit, Display* pDisplay );
    void inhibitDPMS( bool bInhibit, Display* pDisplay );
};

#endif // INCLUDED_VCL_INC_UNX_SCREENSAVERINHIBITOR_HXX

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