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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
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#include <vcl/svapp.hxx>

#include <idlemgr.hxx>

// =======================================================================

struct ImplIdleData
{
    Link        maIdleHdl;
    sal_uInt16      mnPriority;
    sal_Bool        mbTimeout;
};

#define IMPL_IDLETIMEOUT         350

// =======================================================================

ImplIdleMgr::ImplIdleMgr()
{
    mpIdleList  = new ImplIdleList();

    maTimer.SetTimeout( IMPL_IDLETIMEOUT );
    maTimer.SetTimeoutHdl( LINK( this, ImplIdleMgr, TimeoutHdl ) );
}

// -----------------------------------------------------------------------

ImplIdleMgr::~ImplIdleMgr()
{
    // Liste loeschen
    for ( size_t i = 0, n = mpIdleList->size(); i < n; ++i ) {
        delete (*mpIdleList)[ i ];
    }
    mpIdleList->clear();
    delete mpIdleList;
}

// -----------------------------------------------------------------------

sal_Bool ImplIdleMgr::InsertIdleHdl( const Link& rLink, sal_uInt16 nPriority )
{
    size_t nPos = (size_t)-1;
    size_t n = mpIdleList->size();
    for ( size_t i = 0; i < n; ++i ) {
        // we need to check each element to verify that rLink isn't in the array
        if ( (*mpIdleList)[ i ]->maIdleHdl == rLink ) {
            return sal_False;
        }
        if ( nPriority <= (*mpIdleList)[ i ]->mnPriority ) {
            nPos = i;
        }
    }

    ImplIdleData* pIdleData = new ImplIdleData;
    pIdleData->maIdleHdl    = rLink;
    pIdleData->mnPriority   = nPriority;
    pIdleData->mbTimeout    = sal_False;

    if ( nPos < mpIdleList->size() ) {
        ImplIdleList::iterator it = mpIdleList->begin();
        ::std::advance( it, nPos );
        mpIdleList->insert( it, pIdleData );
    } else {
        mpIdleList->push_back( pIdleData );
    }

    // Wenn Timer noch nicht gestartet ist, dann starten
    if ( !maTimer.IsActive() )
        maTimer.Start();

    return sal_True;
}

// -----------------------------------------------------------------------

void ImplIdleMgr::RemoveIdleHdl( const Link& rLink )
{
    for ( ImplIdleList::iterator it = mpIdleList->begin(); it != mpIdleList->end(); ++it ) {
        if ( (*it)->maIdleHdl == rLink ) {
            delete *it;
            mpIdleList->erase( it );
            break;
        }
    }

    // keine Handdler mehr da
    if ( mpIdleList->empty() )
        maTimer.Stop();
}

// -----------------------------------------------------------------------

IMPL_LINK_NOARG(ImplIdleMgr, TimeoutHdl)
{
    for ( size_t i = 0; i < mpIdleList->size(); ++i ) {
        ImplIdleData* pIdleData = (*mpIdleList)[ i ];
        if ( !pIdleData->mbTimeout ) {
            pIdleData->mbTimeout = sal_True;
            pIdleData->maIdleHdl.Call( GetpApp() );
            // May have been removed in the handler
            for ( size_t j = 0; j < mpIdleList->size(); ++j ) {
                if ( (*mpIdleList)[ j ] == pIdleData ) {
                    pIdleData->mbTimeout = sal_False;
                    break;
                }
            }
        }
    }

    return 0;
}

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