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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * Copyright 2000, 2010 Oracle and/or its affiliates.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * This file is part of OpenOffice.org.
 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
 *
 ************************************************************************/


/**
  this file implements the sal printer interface ( SalPrinter, SalInfoPrinter
  and some printer relevant methods of SalInstance and SalGraphicsData )

  as aunderlying library the printer features of psprint are used.

  The query methods of a SalInfoPrinter are implemented by querying psprint

  The job methods of a SalPrinter are implemented by calling psprint
  printer job functions.
 */

// For spawning PDF and FAX generation
#if defined( UNX )
#  include <unistd.h>
#  include <sys/wait.h>
#  include <sys/stat.h>
#endif

#include "rtl/ustring.hxx"

#include "osl/module.h"

#include "vcl/svapp.hxx"
#include "vcl/print.hxx"
#include "vcl/pdfwriter.hxx"
#include "vcl/printerinfomanager.hxx"

#include "saldatabasic.hxx"
#include "generic/genprn.h"
#include "generic/geninst.h"
#include "generic/genpspgraphics.h"

#include "jobset.h"
#include "print.h"
#include "salptype.hxx"

#include <com/sun/star/beans/PropertyValue.hpp>

using namespace psp;
using namespace com::sun::star;

using ::rtl::OUString;
using ::rtl::OUStringHash;
using ::rtl::OUStringToOString;

/*
 *  static helpers
 */

static oslModule driverLib                  = NULL;
extern "C"
{
typedef int(*setupFunction)(PrinterInfo&);
static setupFunction pSetupFunction         = NULL;
typedef int(*faxFunction)(OUString&);
static faxFunction pFaxNrFunction           = NULL;
}

static rtl::OUString getPdfDir( const PrinterInfo& rInfo )
{
    rtl::OUString aDir;
    sal_Int32 nIndex = 0;
    while( nIndex != -1 )
    {
        rtl::OUString aToken( rInfo.m_aFeatures.getToken( 0, ',', nIndex ) );
        if( ! aToken.compareToAscii( "pdf=", 4 ) )
        {
            sal_Int32 nPos = 0;
            aDir = aToken.getToken( 1, '=', nPos );
            if( aDir.isEmpty() && getenv( "HOME" ) )
                aDir = rtl::OUString( getenv( "HOME" ), strlen( getenv( "HOME" ) ), osl_getThreadTextEncoding() );
            break;
        }
    }
    return aDir;
}

static void getPaLib()
{
#if defined( UNX ) && !( defined( QUARTZ ) || defined( IOS ) )
    if( ! driverLib )
    {
        OUString aLibName( RTL_CONSTASCII_USTRINGPARAM( _XSALSET_LIBNAME ) );
        driverLib   = osl_loadModuleRelative( (oslGenericFunction)getPaLib, aLibName.pData, SAL_LOADMODULE_DEFAULT );
        if ( !driverLib )
        {
            return;
        }

        pSetupFunction  = (setupFunction)osl_getAsciiFunctionSymbol( driverLib, "Sal_SetupPrinterDriver" );
        if ( !pSetupFunction )
            fprintf( stderr, "could not resolve Sal_SetupPrinterDriver\n" );

        pFaxNrFunction = (faxFunction)osl_getAsciiFunctionSymbol( driverLib, "Sal_queryFaxNumber" );
        if ( !pFaxNrFunction )
            fprintf( stderr, "could not resolve Sal_queryFaxNumber\n" );
    }
#endif
}

inline int PtTo10Mu( int nPoints ) { return (int)((((double)nPoints)*35.27777778)+0.5); }

inline int TenMuToPt( int nUnits ) { return (int)((((double)nUnits)/35.27777778)+0.5); }

static void copyJobDataToJobSetup( ImplJobSetup* pJobSetup, JobData& rData )
{
    pJobSetup->meOrientation    = (Orientation)(rData.m_eOrientation == orientation::Landscape ? ORIENTATION_LANDSCAPE : ORIENTATION_PORTRAIT);

    // copy page size
    OUString aPaper;
    int width, height;

    rData.m_aContext.getPageSize( aPaper, width, height );
    pJobSetup->mePaperFormat    = PaperInfo::fromPSName(OUStringToOString( aPaper, RTL_TEXTENCODING_ISO_8859_1 ));

    pJobSetup->mnPaperWidth     = 0;
    pJobSetup->mnPaperHeight    = 0;
    if( pJobSetup->mePaperFormat == PAPER_USER )
    {
        // transform to 100dth mm
        width               = PtTo10Mu( width );
        height              = PtTo10Mu( height );

        if( rData.m_eOrientation == psp::orientation::Portrait )
        {
            pJobSetup->mnPaperWidth = width;
            pJobSetup->mnPaperHeight= height;
        }
        else
        {
            pJobSetup->mnPaperWidth = height;
            pJobSetup->mnPaperHeight= width;
        }
    }

    // copy input slot
    const PPDKey* pKey = NULL;
    const PPDValue* pValue = NULL;

    pJobSetup->mnPaperBin = 0;
    if( rData.m_pParser )
        pKey                    = rData.m_pParser->getKey( OUString( RTL_CONSTASCII_USTRINGPARAM( "InputSlot" ) ) );
    if( pKey )
        pValue                  = rData.m_aContext.getValue( pKey );
    if( pKey && pValue )
    {
        for( pJobSetup->mnPaperBin = 0;
             pValue != pKey->getValue( pJobSetup->mnPaperBin ) &&
                 pJobSetup->mnPaperBin < pKey->countValues();
             pJobSetup->mnPaperBin++ )
            ;
        if( pJobSetup->mnPaperBin >= pKey->countValues() )
            pJobSetup->mnPaperBin = 0;
    }

    // copy duplex
    pKey = NULL;
    pValue = NULL;

    pJobSetup->meDuplexMode = DUPLEX_UNKNOWN;
    if( rData.m_pParser )
        pKey = rData.m_pParser->getKey( OUString( RTL_CONSTASCII_USTRINGPARAM( "Duplex" ) ) );
    if( pKey )
        pValue = rData.m_aContext.getValue( pKey );
    if( pKey && pValue )
    {
        if( pValue->m_aOption.EqualsIgnoreCaseAscii( "None" ) ||
            pValue->m_aOption.EqualsIgnoreCaseAscii( "Simplex", 0, 7 )
           )
        {
            pJobSetup->meDuplexMode = DUPLEX_OFF;
        }
        else if( pValue->m_aOption.EqualsIgnoreCaseAscii( "DuplexNoTumble" ) )
        {
            pJobSetup->meDuplexMode = DUPLEX_LONGEDGE;
        }
        else if( pValue->m_aOption.EqualsIgnoreCaseAscii( "DuplexTumble" ) )
        {
            pJobSetup->meDuplexMode = DUPLEX_SHORTEDGE;
        }
    }

    // copy the whole context
    if( pJobSetup->mpDriverData )
        rtl_freeMemory( pJobSetup->mpDriverData );

    int nBytes;
    void* pBuffer = NULL;
    if( rData.getStreamBuffer( pBuffer, nBytes ) )
    {
        pJobSetup->mnDriverDataLen = nBytes;
        pJobSetup->mpDriverData = (sal_uInt8*)pBuffer;
    }
    else
    {
        pJobSetup->mnDriverDataLen = 0;
        pJobSetup->mpDriverData = NULL;
    }
}

// Needs a cleaner abstraction ...
#if defined( UNX )
static bool passFileToCommandLine( const OUString& rFilename, const OUString& rCommandLine, bool bRemoveFile = true )
{
    bool bSuccess = false;

    rtl_TextEncoding aEncoding = osl_getThreadTextEncoding();
    rtl::OString aCmdLine(rtl::OUStringToOString(rCommandLine, aEncoding));
    rtl::OString aFilename(rtl::OUStringToOString(rFilename, aEncoding));

    bool bPipe = aCmdLine.indexOf( "(TMP)" ) != -1 ? false : true;

    // setup command line for exec
    if( ! bPipe )
        aCmdLine = aCmdLine.replaceAll(rtl::OString("(TMP)"), aFilename);

#if OSL_DEBUG_LEVEL > 1
    fprintf( stderr, "%s commandline: \"%s\"\n",
             bPipe ? "piping to" : "executing",
             aCmdLine.getStr() );
    struct stat aStat;
    if( stat( aFilename.getStr(), &aStat ) )
        fprintf( stderr, "stat( %s ) failed\n", aFilename.getStr() );
    fprintf( stderr, "Tmp file %s has modes: 0%03lo\n", aFilename.getStr(), (long)aStat.st_mode );
#endif
    const char* argv[4];
    if( ! ( argv[ 0 ] = getenv( "SHELL" ) ) )
        argv[ 0 ] = "/bin/sh";
    argv[ 1 ] = "-c";
    argv[ 2 ] = aCmdLine.getStr();
    argv[ 3 ] = 0;

    bool bHavePipes = false;
    int pid, fd[2];

    if( bPipe )
        bHavePipes = pipe( fd ) ? false : true;
    if( ( pid = fork() ) > 0 )
    {
        if( bPipe && bHavePipes )
        {
            close( fd[0] );
            char aBuffer[ 2048 ];
            FILE* fp = fopen( aFilename.getStr(), "r" );
            while (fp && !feof(fp))
            {
                size_t nBytesRead = fread(aBuffer, 1, sizeof( aBuffer ), fp);
                if (nBytesRead )
                {
                    size_t nBytesWritten = write(fd[1], aBuffer, nBytesRead);
                    OSL_ENSURE(nBytesWritten == nBytesRead, "short write");
                    if (nBytesWritten != nBytesRead)
                        break;
                }
            }
            fclose( fp );<--- Possible null pointer dereference: fp - otherwise it is redundant to check if fp is null at line 275
            close( fd[ 1 ] );
        }
        int status = 0;
        waitpid( pid, &status, 0 );
        if( ! status )
            bSuccess = true;
    }
    else if( ! pid )
    {
        if( bPipe && bHavePipes )
        {
            close( fd[1] );
            if( fd[0] != STDIN_FILENO ) // not probable, but who knows :)
                dup2( fd[0], STDIN_FILENO );
        }
        execv( argv[0], const_cast<char**>(argv) );
        fprintf( stderr, "failed to execute \"%s\"\n", aCmdLine.getStr() );
        _exit( 1 );
    }
    else
        fprintf( stderr, "failed to fork\n" );

    // clean up the mess
    if( bRemoveFile )
        unlink( aFilename.getStr() );

    return bSuccess;
}
#endif

static bool sendAFax( const OUString& rFaxNumber, const OUString& rFileName, const OUString& rCommand )
{
#if defined( UNX )
    std::list< OUString > aFaxNumbers;

    if( rFaxNumber.isEmpty() )
    {
        getPaLib();
        if( pFaxNrFunction )
        {
            OUString aNewNr;
            if( pFaxNrFunction( aNewNr ) )
                aFaxNumbers.push_back( aNewNr );
        }
    }
    else
    {
        sal_Int32 nIndex = 0;
        OUString aFaxes( rFaxNumber );
        OUString aBeginToken( RTL_CONSTASCII_USTRINGPARAM("<Fax#>") );
        OUString aEndToken( RTL_CONSTASCII_USTRINGPARAM("</Fax#>") );
        while( nIndex != -1 )
        {
            nIndex = aFaxes.indexOf( aBeginToken, nIndex );
            if( nIndex != -1 )
            {
                sal_Int32 nBegin = nIndex + aBeginToken.getLength();
                nIndex = aFaxes.indexOf( aEndToken, nIndex );
                if( nIndex != -1 )
                {
                    aFaxNumbers.push_back( aFaxes.copy( nBegin, nIndex-nBegin ) );
                    nIndex += aEndToken.getLength();
                }
            }
        }
    }

    bool bSuccess = true;
    if( aFaxNumbers.begin() != aFaxNumbers.end() )
    {
        while( aFaxNumbers.begin() != aFaxNumbers.end() && bSuccess )
        {
            OUString aFaxNumber( aFaxNumbers.front() );
            aFaxNumbers.pop_front();
            OUString aCmdLine(
                rCommand.replaceAll("(PHONE)", aFaxNumber));
#if OSL_DEBUG_LEVEL > 1
            fprintf( stderr, "sending fax to \"%s\"\n", OUStringToOString( aFaxNumber, osl_getThreadTextEncoding() ).getStr() );
#endif
            bSuccess = passFileToCommandLine( rFileName, aCmdLine, false );
        }
    }
    else
        bSuccess = false;

    // clean up temp file
    unlink(rtl::OUStringToOString(rFileName, osl_getThreadTextEncoding()).getStr());

    return bSuccess;
#else
    (void)rFaxNumber; (void)rFileName; (void)rCommand;
    return false;
#endif
}

static bool createPdf( const OUString& rToFile, const OUString& rFromFile, const OUString& rCommandLine )
{
#if defined( UNX )
    OUString aCommandLine(
        rCommandLine.replaceAll("(OUTFILE)", rToFile));

    return passFileToCommandLine( rFromFile, aCommandLine );
#else
    (void)rToFile; (void)rFromFile; (void)rCommandLine;
    return false;
#endif
}

/*
 *  SalInstance
 */

void SalGenericInstance::configurePspInfoPrinter(PspSalInfoPrinter *pPrinter,
    SalPrinterQueueInfo* pQueueInfo, ImplJobSetup* pJobSetup)
{
    if( pJobSetup )
    {
        PrinterInfoManager& rManager( PrinterInfoManager::get() );
        PrinterInfo aInfo( rManager.getPrinterInfo( pQueueInfo->maPrinterName ) );
        pPrinter->m_aJobData = aInfo;
        pPrinter->m_aPrinterGfx.Init( pPrinter->m_aJobData );

        if( pJobSetup->mpDriverData )
            JobData::constructFromStreamBuffer( pJobSetup->mpDriverData, pJobSetup->mnDriverDataLen, aInfo );

        pJobSetup->mnSystem         = JOBSETUP_SYSTEM_UNIX;
        pJobSetup->maPrinterName    = pQueueInfo->maPrinterName;
        pJobSetup->maDriver         = aInfo.m_aDriverName;
        copyJobDataToJobSetup( pJobSetup, aInfo );
    }
}

SalInfoPrinter* SalGenericInstance::CreateInfoPrinter( SalPrinterQueueInfo*    pQueueInfo,
                                                   ImplJobSetup*            pJobSetup )
{
    mbPrinterInit = true;
    // create and initialize SalInfoPrinter
    PspSalInfoPrinter* pPrinter = new PspSalInfoPrinter();
    configurePspInfoPrinter(pPrinter, pQueueInfo, pJobSetup);
    return pPrinter;
}

void SalGenericInstance::DestroyInfoPrinter( SalInfoPrinter* pPrinter )
{
    delete pPrinter;
}

SalPrinter* SalGenericInstance::CreatePrinter( SalInfoPrinter* pInfoPrinter )
{
    mbPrinterInit = true;
    // create and initialize SalPrinter
    PspSalPrinter* pPrinter = new PspSalPrinter( pInfoPrinter );
    pPrinter->m_aJobData = static_cast<PspSalInfoPrinter*>(pInfoPrinter)->m_aJobData;

    return pPrinter;
}

void SalGenericInstance::DestroyPrinter( SalPrinter* pPrinter )
{
    delete pPrinter;
}

void SalGenericInstance::GetPrinterQueueInfo( ImplPrnQueueList* pList )
{
    mbPrinterInit = true;
    PrinterInfoManager& rManager( PrinterInfoManager::get() );
    static const char* pNoSyncDetection = getenv( "SAL_DISABLE_SYNCHRONOUS_PRINTER_DETECTION" );
    if( ! pNoSyncDetection || ! *pNoSyncDetection )
    {
        // #i62663# synchronize possible asynchronouse printer detection now
        rManager.checkPrintersChanged( true );
    }
    ::std::list< OUString > aPrinters;
    rManager.listPrinters( aPrinters );

    for( ::std::list< OUString >::iterator it = aPrinters.begin(); it != aPrinters.end(); ++it )
    {
        const PrinterInfo& rInfo( rManager.getPrinterInfo( *it ) );
        // Neuen Eintrag anlegen
        SalPrinterQueueInfo* pInfo = new SalPrinterQueueInfo;
        pInfo->maPrinterName    = *it;
        pInfo->maDriver         = rInfo.m_aDriverName;
        pInfo->maLocation       = rInfo.m_aLocation;
        pInfo->maComment        = rInfo.m_aComment;
        pInfo->mpSysData        = NULL;

        sal_Int32 nIndex = 0;
        while( nIndex != -1 )
        {
            rtl::OUString aToken( rInfo.m_aFeatures.getToken( 0, ',', nIndex ) );
            if( aToken.matchAsciiL( RTL_CONSTASCII_STRINGPARAM("pdf=") ) )
            {
                pInfo->maLocation = getPdfDir( rInfo );
                break;
            }
        }

        pList->Add( pInfo );
    }
}

void SalGenericInstance::DeletePrinterQueueInfo( SalPrinterQueueInfo* pInfo )
{
    delete pInfo;
}

void SalGenericInstance::GetPrinterQueueState( SalPrinterQueueInfo* )
{
    mbPrinterInit = true;
}

rtl::OUString SalGenericInstance::GetDefaultPrinter()
{
    mbPrinterInit = true;
    PrinterInfoManager& rManager( PrinterInfoManager::get() );
    return rManager.getDefaultPrinter();
}

PspSalInfoPrinter::PspSalInfoPrinter()
    : m_pGraphics( NULL )
{
}

PspSalInfoPrinter::~PspSalInfoPrinter()
{
    if( m_pGraphics )
    {
        delete m_pGraphics;
        m_pGraphics = NULL;
    }
}

void PspSalInfoPrinter::InitPaperFormats( const ImplJobSetup* )
{
    m_aPaperFormats.clear();
    m_bPapersInit = true;

    if( m_aJobData.m_pParser )
    {
        const PPDKey* pKey = m_aJobData.m_pParser->getKey( OUString( RTL_CONSTASCII_USTRINGPARAM( "PageSize" ) ) );
        if( pKey )
        {
            int nValues = pKey->countValues();
            for( int i = 0; i < nValues; i++ )
            {
                const PPDValue* pValue = pKey->getValue( i );
                int nWidth = 0, nHeight = 0;
                m_aJobData.m_pParser->getPaperDimension( pValue->m_aOption, nWidth, nHeight );
                PaperInfo aInfo(PtTo10Mu( nWidth ), PtTo10Mu( nHeight ));
                m_aPaperFormats.push_back( aInfo );
            }
        }
    }
}

int PspSalInfoPrinter::GetLandscapeAngle( const ImplJobSetup* )
{
    return 900;
}

SalGraphics* PspSalInfoPrinter::GetGraphics()
{
    // return a valid pointer only once
    // the reasoning behind this is that we could have different
    // SalGraphics that can run in multiple threads
    // (future plans)
    SalGraphics* pRet = NULL;
    if( ! m_pGraphics )
    {
        m_pGraphics = GetGenericInstance()->CreatePrintGraphics();
        m_pGraphics->Init( &m_aJobData, &m_aPrinterGfx, NULL, false, this );
        pRet = m_pGraphics;
    }
    return pRet;
}

void PspSalInfoPrinter::ReleaseGraphics( SalGraphics* pGraphics )
{
    if( pGraphics == m_pGraphics )
    {
        delete pGraphics;
        m_pGraphics = NULL;
    }
    return;
}

sal_Bool PspSalInfoPrinter::Setup( SalFrame* pFrame, ImplJobSetup* pJobSetup )
{
    if( ! pFrame || ! pJobSetup )
        return sal_False;

    getPaLib();

    if( ! pSetupFunction )
        return sal_False;

    PrinterInfoManager& rManager = PrinterInfoManager::get();

    PrinterInfo aInfo( rManager.getPrinterInfo( pJobSetup->maPrinterName ) );
    if ( pJobSetup->mpDriverData )
    {
        SetData( ~0, pJobSetup );
        JobData::constructFromStreamBuffer( pJobSetup->mpDriverData, pJobSetup->mnDriverDataLen, aInfo );
    }

    if( pSetupFunction( aInfo ) )
    {
        rtl_freeMemory( pJobSetup->mpDriverData );
        pJobSetup->mpDriverData = NULL;

        int nBytes;
        void* pBuffer = NULL;
        aInfo.getStreamBuffer( pBuffer, nBytes );
        pJobSetup->mnDriverDataLen  = nBytes;
        pJobSetup->mpDriverData     = (sal_uInt8*)pBuffer;

        // copy everything to job setup
        copyJobDataToJobSetup( pJobSetup, aInfo );
        JobData::constructFromStreamBuffer( pJobSetup->mpDriverData, pJobSetup->mnDriverDataLen, m_aJobData );
        return sal_True;
    }
    return sal_False;
}

// This function gets the driver data and puts it into pJobSetup
// If pJobSetup->mpDriverData is NOT NULL, then the independend
// data should be merged into the driver data
// If pJobSetup->mpDriverData IS NULL, then the driver defaults
// should be merged into the independent data
sal_Bool PspSalInfoPrinter::SetPrinterData( ImplJobSetup* pJobSetup )
{
    if( pJobSetup->mpDriverData )
        return SetData( ~0, pJobSetup );

    copyJobDataToJobSetup( pJobSetup, m_aJobData );

    return sal_True;
}

// This function merges the independ driver data
// and sets the new independ data in pJobSetup
// Only the data must be changed, where the bit
// in nGetDataFlags is set
sal_Bool PspSalInfoPrinter::SetData(
    sal_uLong nSetDataFlags,
    ImplJobSetup* pJobSetup )
{
    JobData aData;
    JobData::constructFromStreamBuffer( pJobSetup->mpDriverData, pJobSetup->mnDriverDataLen, aData );

    if( aData.m_pParser )
    {
        const PPDKey* pKey;
        const PPDValue* pValue;

        // merge papersize if necessary
        if( nSetDataFlags & SAL_JOBSET_PAPERSIZE )
        {
            OUString aPaper;

            if( pJobSetup->mePaperFormat == PAPER_USER )
                aPaper = aData.m_pParser->matchPaper(
                    TenMuToPt( pJobSetup->mnPaperWidth ),
                    TenMuToPt( pJobSetup->mnPaperHeight ) );
            else
                aPaper = rtl::OStringToOUString(PaperInfo::toPSName(pJobSetup->mePaperFormat), RTL_TEXTENCODING_ISO_8859_1);

            pKey = aData.m_pParser->getKey( OUString( RTL_CONSTASCII_USTRINGPARAM( "PageSize" ) ) );
            pValue = pKey ? pKey->getValueCaseInsensitive( aPaper ) : NULL;

            // some PPD files do not specify the standard paper names (e.g. C5 instead of EnvC5)
            // try to find the correct paper anyway using the size
            if( pKey && ! pValue && pJobSetup->mePaperFormat != PAPER_USER )
            {
                PaperInfo aInfo( pJobSetup->mePaperFormat );
                aPaper = aData.m_pParser->matchPaper(
                    TenMuToPt( aInfo.getWidth() ),
                    TenMuToPt( aInfo.getHeight() ) );
                pValue = pKey->getValueCaseInsensitive( aPaper );
            }

            if( ! ( pKey && pValue && aData.m_aContext.setValue( pKey, pValue, false ) == pValue ) )
                return sal_False;
        }

        // merge paperbin if necessary
        if( nSetDataFlags & SAL_JOBSET_PAPERBIN )
        {
            pKey = aData.m_pParser->getKey( OUString( RTL_CONSTASCII_USTRINGPARAM( "InputSlot" ) ) );
            if( pKey )
            {
                int nPaperBin = pJobSetup->mnPaperBin;
                if( nPaperBin >= pKey->countValues() )
                    pValue = pKey->getDefaultValue();
                else
                    pValue = pKey->getValue( pJobSetup->mnPaperBin );

                // may fail due to constraints;
                // real paper bin is copied back to jobsetup in that case
                aData.m_aContext.setValue( pKey, pValue );
            }
            // if printer has no InputSlot key simply ignore this setting
            // (e.g. SGENPRT has no InputSlot)
        }

        // merge orientation if necessary
        if( nSetDataFlags & SAL_JOBSET_ORIENTATION )
            aData.m_eOrientation = pJobSetup->meOrientation == ORIENTATION_LANDSCAPE ? orientation::Landscape : orientation::Portrait;

        // merge duplex if necessary
        if( nSetDataFlags & SAL_JOBSET_DUPLEXMODE )
        {
            pKey = aData.m_pParser->getKey( OUString( RTL_CONSTASCII_USTRINGPARAM( "Duplex" ) ) );
            if( pKey )
            {
                pValue = NULL;
                switch( pJobSetup->meDuplexMode )
                {
                case DUPLEX_OFF:
                    pValue = pKey->getValue( OUString( RTL_CONSTASCII_USTRINGPARAM( "None" ) ) );
                    if( pValue == NULL )
                        pValue = pKey->getValue( OUString( RTL_CONSTASCII_USTRINGPARAM( "SimplexNoTumble" ) ) );
                    break;
                case DUPLEX_SHORTEDGE:
                    pValue = pKey->getValue( OUString( RTL_CONSTASCII_USTRINGPARAM( "DuplexTumble" ) ) );
                    break;
                case DUPLEX_LONGEDGE:
                    pValue = pKey->getValue( OUString( RTL_CONSTASCII_USTRINGPARAM( "DuplexNoTumble" ) ) );
                    break;
                case DUPLEX_UNKNOWN:
                default:
                    pValue = 0;
                    break;
                }
                if( ! pValue )
                    pValue = pKey->getDefaultValue();
                aData.m_aContext.setValue( pKey, pValue );
            }
        }

        m_aJobData = aData;
        copyJobDataToJobSetup( pJobSetup, aData );
        return sal_True;
    }

    return sal_False;
}

void PspSalInfoPrinter::GetPageInfo(
    const ImplJobSetup* pJobSetup,
    long& rOutWidth, long& rOutHeight,
    long& rPageOffX, long& rPageOffY,
    long& rPageWidth, long& rPageHeight )
{
    if( ! pJobSetup )
        return;

    JobData aData;
    JobData::constructFromStreamBuffer( pJobSetup->mpDriverData, pJobSetup->mnDriverDataLen, aData );

    // get the selected page size
    if( aData.m_pParser )
    {

        OUString aPaper;
        int width, height;
        int left = 0, top = 0, right = 0, bottom = 0;
        int nDPI = aData.m_aContext.getRenderResolution();


        if( aData.m_eOrientation == psp::orientation::Portrait )
        {
            aData.m_aContext.getPageSize( aPaper, width, height );
            aData.m_pParser->getMargins( aPaper, left, right, top, bottom );
        }
        else
        {
            aData.m_aContext.getPageSize( aPaper, height, width );
            aData.m_pParser->getMargins( aPaper, top, bottom, right, left );
        }

        rPageWidth  = width * nDPI / 72;
        rPageHeight = height * nDPI / 72;
        rPageOffX   = left * nDPI / 72;
        rPageOffY   = top * nDPI / 72;
        rOutWidth   = ( width  - left - right ) * nDPI / 72;
        rOutHeight  = ( height - top  - bottom ) * nDPI / 72;
    }
}

sal_uLong PspSalInfoPrinter::GetPaperBinCount( const ImplJobSetup* pJobSetup )
{
    if( ! pJobSetup )
        return 0;

    JobData aData;
    JobData::constructFromStreamBuffer( pJobSetup->mpDriverData, pJobSetup->mnDriverDataLen, aData );

    const PPDKey* pKey = aData.m_pParser ? aData.m_pParser->getKey( OUString( RTL_CONSTASCII_USTRINGPARAM( "InputSlot" ) ) ): NULL;
    return pKey ? pKey->countValues() : 0;
}

rtl::OUString PspSalInfoPrinter::GetPaperBinName( const ImplJobSetup* pJobSetup, sal_uLong nPaperBin )
{
    JobData aData;
    JobData::constructFromStreamBuffer( pJobSetup->mpDriverData, pJobSetup->mnDriverDataLen, aData );

    OUString aRet;
    if( aData.m_pParser )
    {
        const PPDKey* pKey = aData.m_pParser ? aData.m_pParser->getKey( OUString( RTL_CONSTASCII_USTRINGPARAM( "InputSlot" ) ) ): NULL;
        if( ! pKey || nPaperBin >= (sal_uLong)pKey->countValues() )
            aRet = aData.m_pParser->getDefaultInputSlot();
        else
        {
            const PPDValue* pValue = pKey->getValue( nPaperBin );
            if( pValue )
                aRet = aData.m_pParser->translateOption( pKey->getKey(), pValue->m_aOption );
        }
    }

    return aRet;
}

sal_uLong PspSalInfoPrinter::GetCapabilities( const ImplJobSetup* pJobSetup, sal_uInt16 nType )
{
    switch( nType )
    {
        case PRINTER_CAPABILITIES_SUPPORTDIALOG:
            return 1;
        case PRINTER_CAPABILITIES_COPIES:
            return 0xffff;
        case PRINTER_CAPABILITIES_COLLATECOPIES:
        {
            // see if the PPD contains a value to set Collate to True
            JobData aData;
            JobData::constructFromStreamBuffer( pJobSetup->mpDriverData, pJobSetup->mnDriverDataLen, aData );

            const PPDKey* pKey = aData.m_pParser ? aData.m_pParser->getKey( OUString( RTL_CONSTASCII_USTRINGPARAM( "Collate" ) ) ) : NULL;
            const PPDValue* pVal = pKey ? pKey->getValue( OUString( RTL_CONSTASCII_USTRINGPARAM( "True" ) ) ) : NULL;

            // PPDs don't mention the number of possible collated copies.
            // so let's guess as many as we want ?
            return pVal ? 0xffff : 0;
        }
        case PRINTER_CAPABILITIES_SETORIENTATION:
            return 1;
        case PRINTER_CAPABILITIES_SETDUPLEX:
            return 1;
        case PRINTER_CAPABILITIES_SETPAPERBIN:
            return 1;
        case PRINTER_CAPABILITIES_SETPAPERSIZE:
            return 1;
        case PRINTER_CAPABILITIES_SETPAPER:
            return 0;
        case PRINTER_CAPABILITIES_FAX:
            return PrinterInfoManager::get().checkFeatureToken( pJobSetup->maPrinterName, "fax" ) ? 1 : 0;
        case PRINTER_CAPABILITIES_PDF:
            if( PrinterInfoManager::get().checkFeatureToken( pJobSetup->maPrinterName, "pdf" ) )
                return 1;
            else
            {
                // see if the PPD contains a value to set Collate to True
                JobData aData = PrinterInfoManager::get().getPrinterInfo( pJobSetup->maPrinterName );
                if( pJobSetup->mpDriverData )
                    JobData::constructFromStreamBuffer( pJobSetup->mpDriverData, pJobSetup->mnDriverDataLen, aData );
                return aData.m_nPDFDevice > 0 ? 1 : 0;
            }
        case PRINTER_CAPABILITIES_EXTERNALDIALOG:
            return PrinterInfoManager::get().checkFeatureToken( pJobSetup->maPrinterName, "external_dialog" ) ? 1 : 0;
        case PRINTER_CAPABILITIES_USEPULLMODEL:
        {
            // see if the PPD contains a value to set Collate to True
            JobData aData = PrinterInfoManager::get().getPrinterInfo( pJobSetup->maPrinterName );
            if( pJobSetup->mpDriverData )
                JobData::constructFromStreamBuffer( pJobSetup->mpDriverData, pJobSetup->mnDriverDataLen, aData );
            return aData.m_nPDFDevice > 0 ? 1 : 0;
        }
        default: break;
    };
    return 0;
}

/*
 *  SalPrinter
 */
PspSalPrinter::PspSalPrinter( SalInfoPrinter* pInfoPrinter )
 : m_bFax( false ),
   m_bPdf( false ),
   m_bSwallowFaxNo( false ),
   m_bIsPDFWriterJob( false ),
   m_pGraphics( NULL ),
   m_nCopies( 1 ),
   m_bCollate( false ),
   m_pInfoPrinter( pInfoPrinter )
{
}

PspSalPrinter::~PspSalPrinter()
{
}

static rtl::OUString getTmpName()
{
    rtl::OUString aTmp, aSys;
    osl_createTempFile( NULL, NULL, &aTmp.pData );
    osl_getSystemPathFromFileURL( aTmp.pData, &aSys.pData );

    return aSys;
}

sal_Bool PspSalPrinter::StartJob(
    const rtl::OUString* pFileName,
    const rtl::OUString& rJobName,
    const rtl::OUString& rAppName,
    sal_uLong nCopies,
    bool bCollate,
    bool bDirect,
    ImplJobSetup* pJobSetup )
{
    OSL_TRACE("PspSalPrinter::StartJob");
    GetSalData()->m_pInstance->jobStartedPrinterUpdate();

    m_bFax      = false;
    m_bPdf      = false;
    m_aFileName = pFileName ? *pFileName : rtl::OUString();
    m_aTmpFile  = rtl::OUString();
    m_nCopies   = nCopies;
    m_bCollate  = bCollate;

    JobData::constructFromStreamBuffer( pJobSetup->mpDriverData, pJobSetup->mnDriverDataLen, m_aJobData );
    if( m_nCopies > 1 )
    {
        // in case user did not do anything (m_nCopies=1)
        // take the default from jobsetup
        m_aJobData.m_nCopies = m_nCopies;
        m_aJobData.setCollate( bCollate );
    }

    int nMode = 0;
#if defined( UNX )
    // check whether this printer is configured as fax
    sal_Int32 nIndex = 0;
    const PrinterInfo& rInfo( PrinterInfoManager::get().getPrinterInfo( m_aJobData.m_aPrinterName ) );
    while( nIndex != -1 )
    {
        OUString aToken( rInfo.m_aFeatures.getToken( 0, ',', nIndex ) );
        if( ! aToken.compareToAscii( "fax", 3 ) )
        {
            m_bFax = true;
            m_aTmpFile = getTmpName();
            nMode = S_IRUSR | S_IWUSR;

            ::boost::unordered_map< ::rtl::OUString, ::rtl::OUString, ::rtl::OUStringHash >::const_iterator it;
            it = pJobSetup->maValueMap.find( ::rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("FAX#")) );
            if( it != pJobSetup->maValueMap.end() )
                m_aFaxNr = it->second;

            sal_Int32 nPos = 0;
            m_bSwallowFaxNo = ! aToken.getToken( 1, '=', nPos ).compareToAscii( "swallow", 7 ) ? true : false;

            break;
        }
        if( ! aToken.compareToAscii( "pdf=", 4 ) )
        {
            m_bPdf = true;
            m_aTmpFile = getTmpName();
            nMode = S_IRUSR | S_IWUSR;

            if( m_aFileName.isEmpty() )
            {
                rtl::OUStringBuffer aFileName( getPdfDir( rInfo ) );
                aFileName.append( '/' );
                aFileName.append( rJobName );
                aFileName.appendAscii( RTL_CONSTASCII_STRINGPARAM( ".pdf" ) );
                m_aFileName = aFileName.makeStringAndClear();
            }
            break;
        }
    }
#endif
    m_aPrinterGfx.Init( m_aJobData );

    return m_aPrintJob.StartJob( ! m_aTmpFile.isEmpty() ? m_aTmpFile : m_aFileName, nMode, rJobName, rAppName, m_aJobData, &m_aPrinterGfx, bDirect ) ? sal_True : sal_False;
}

sal_Bool PspSalPrinter::EndJob()
{
    sal_Bool bSuccess = sal_False;
    if( m_bIsPDFWriterJob )
        bSuccess = sal_True;
    else
    {
        bSuccess = m_aPrintJob.EndJob();
       OSL_TRACE("PspSalPrinter::EndJob %d", bSuccess);

        if( bSuccess )
        {
            // check for fax
            if( m_bFax )
            {
                const PrinterInfo& rInfo( PrinterInfoManager::get().getPrinterInfo( m_aJobData.m_aPrinterName ) );
                // sendAFax removes the file after use
                bSuccess = sendAFax( m_aFaxNr, m_aTmpFile, rInfo.m_aCommand );
            }
            else if( m_bPdf )
            {
                const PrinterInfo& rInfo( PrinterInfoManager::get().getPrinterInfo( m_aJobData.m_aPrinterName ) );
                bSuccess = createPdf( m_aFileName, m_aTmpFile, rInfo.m_aCommand );
            }
        }
    }
    GetSalData()->m_pInstance->jobEndedPrinterUpdate();
    return bSuccess;
}

sal_Bool PspSalPrinter::AbortJob()
{
    sal_Bool bAbort = m_aPrintJob.AbortJob() ? sal_True : sal_False;
    GetSalData()->m_pInstance->jobEndedPrinterUpdate();
    return bAbort;
}

SalGraphics* PspSalPrinter::StartPage( ImplJobSetup* pJobSetup, sal_Bool )
{
    OSL_TRACE("PspSalPrinter::StartPage");

    JobData::constructFromStreamBuffer( pJobSetup->mpDriverData, pJobSetup->mnDriverDataLen, m_aJobData );
    m_pGraphics = GetGenericInstance()->CreatePrintGraphics();
    m_pGraphics->Init( &m_aJobData, &m_aPrinterGfx, m_bFax ? &m_aFaxNr : NULL,
                       m_bSwallowFaxNo, m_pInfoPrinter );
    if( m_nCopies > 1 )
    {
        // in case user did not do anything (m_nCopies=1)
        // take the default from jobsetup
        m_aJobData.m_nCopies = m_nCopies;
        m_aJobData.setCollate( m_nCopies > 1 && m_bCollate );
    }

    m_aPrintJob.StartPage( m_aJobData );
    m_aPrinterGfx.Init( m_aPrintJob );

    return m_pGraphics;
}

sal_Bool PspSalPrinter::EndPage()
{
    sal_Bool bResult = m_aPrintJob.EndPage();
    m_aPrinterGfx.Clear();
    OSL_TRACE("PspSalPrinter::EndPage");
    return bResult ? sal_True : sal_False;
}

sal_uLong PspSalPrinter::GetErrorCode()
{
    return 0;
}

struct PDFNewJobParameters
{
    Size        maPageSize;
    sal_uInt16      mnPaperBin;

    PDFNewJobParameters( const Size& i_rSize = Size(),
                         sal_uInt16 i_nPaperBin = 0xffff )
    : maPageSize( i_rSize ), mnPaperBin( i_nPaperBin ) {}

    bool operator!=(const PDFNewJobParameters& rComp ) const
    {
        Size aCompLSSize( rComp.maPageSize.Height(), rComp.maPageSize.Width() );
        return
            (maPageSize != rComp.maPageSize && maPageSize != aCompLSSize)
        ||  mnPaperBin != rComp.mnPaperBin
        ;
    }

    bool operator==(const PDFNewJobParameters& rComp) const
    {
        return ! this->operator!=(rComp);
    }
};

struct PDFPrintFile
{
    rtl::OUString       maTmpURL;
    PDFNewJobParameters maParameters;

    PDFPrintFile( const rtl::OUString& i_rURL, const PDFNewJobParameters& i_rNewParameters )
    : maTmpURL( i_rURL )
    , maParameters( i_rNewParameters ) {}
};

sal_Bool PspSalPrinter::StartJob( const rtl::OUString* i_pFileName, const rtl::OUString& i_rJobName, const rtl::OUString& i_rAppName,
                              ImplJobSetup* i_pSetupData, vcl::PrinterController& i_rController )
{
    OSL_TRACE( "StartJob with controller: pFilename = %s", i_pFileName ? rtl::OUStringToOString( *i_pFileName, RTL_TEXTENCODING_UTF8 ).getStr() : "<nil>" );
    // mark for endjob
    m_bIsPDFWriterJob = true;
    // reset IsLastPage
    i_rController.setLastPage( sal_False );

    // update job data
    if( i_pSetupData )
        JobData::constructFromStreamBuffer( i_pSetupData->mpDriverData, i_pSetupData->mnDriverDataLen, m_aJobData );

    OSL_ASSERT( m_aJobData.m_nPDFDevice > 0 );
    m_aJobData.m_nPDFDevice = 1;

    // possibly create one job for collated output
    sal_Bool bSinglePrintJobs = sal_False;
    beans::PropertyValue* pSingleValue = i_rController.getValue( rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "PrintCollateAsSingleJobs" ) ) );
    if( pSingleValue )
    {
        pSingleValue->Value >>= bSinglePrintJobs;
    }

    int nCopies = i_rController.getPrinter()->GetCopyCount();
    bool bCollate = i_rController.getPrinter()->IsCollateCopy();

    // notify start of real print job
    i_rController.jobStarted();

    // setup PDFWriter context
    vcl::PDFWriter::PDFWriterContext aContext;
    aContext.Version            = vcl::PDFWriter::PDF_1_4;
    aContext.Tagged             = false;
    aContext.EmbedStandardFonts = true;
    aContext.DocumentLocale     = Application::GetSettings().GetLocale();
    aContext.ColorMode          = i_rController.getPrinter()->GetPrinterOptions().IsConvertToGreyscales()
    ? vcl::PDFWriter::DrawGreyscale : vcl::PDFWriter::DrawColor;

    // prepare doc info
    aContext.DocumentInfo.Title              = i_rJobName;
    aContext.DocumentInfo.Creator            = i_rAppName;
    aContext.DocumentInfo.Producer           = i_rAppName;

    // define how we handle metafiles in PDFWriter
    vcl::PDFWriter::PlayMetafileContext aMtfContext;
    aMtfContext.m_bOnlyLosslessCompression = true;

    boost::shared_ptr<vcl::PDFWriter> pWriter;
    std::vector< PDFPrintFile > aPDFFiles;
    boost::shared_ptr<Printer> pPrinter( i_rController.getPrinter() );
    int nAllPages = i_rController.getFilteredPageCount();
    i_rController.createProgressDialog();
    bool bAborted = false;
    PDFNewJobParameters aLastParm;

    aContext.DPIx = pPrinter->ImplGetDPIX();
    aContext.DPIy = pPrinter->ImplGetDPIY();
    for( int nPage = 0; nPage < nAllPages && ! bAborted; nPage++ )
    {
        if( nPage == nAllPages-1 )
            i_rController.setLastPage( sal_True );

        // get the page's metafile
        GDIMetaFile aPageFile;
        vcl::PrinterController::PageSize aPageSize = i_rController.getFilteredPageFile( nPage, aPageFile );
        if( i_rController.isProgressCanceled() )
        {
            bAborted = true;
            if( nPage != nAllPages-1 )
            {
                i_rController.createProgressDialog();
                i_rController.setLastPage( sal_True );
                i_rController.getFilteredPageFile( nPage, aPageFile );
            }
        }
        else
        {
            pPrinter->SetMapMode( MapMode( MAP_100TH_MM ) );
            pPrinter->SetPaperSizeUser( aPageSize.aSize, true );
            PDFNewJobParameters aNewParm( pPrinter->GetPaperSize(), pPrinter->GetPaperBin() );

            // create PDF writer on demand
            // either on first page
            // or on paper format change - cups does not support multiple paper formats per job (yet?)
            // so we need to start a new job to get a new paper format from the printer
            // orientation switches (that is switch of height and width) is handled transparently by CUPS
            if( ! pWriter ||
                (aNewParm != aLastParm && ! i_pFileName ) )
            {
                if( pWriter )
                {
                    pWriter->Emit();
                }
                // produce PDF file
                OUString aPDFUrl;
                if( i_pFileName )
                    aPDFUrl = *i_pFileName;
                else
                    osl_createTempFile( NULL, NULL, &aPDFUrl.pData );
                // normalize to file URL
                if( aPDFUrl.compareToAscii( "file:", 5 ) != 0 )
                {
                    // this is not a file URL, but it should
                    // form it into a osl friendly file URL
                    rtl::OUString aTmp;
                    osl_getFileURLFromSystemPath( aPDFUrl.pData, &aTmp.pData );
                    aPDFUrl = aTmp;
                }
                // save current file and paper format
                aLastParm = aNewParm;
                aPDFFiles.push_back( PDFPrintFile( aPDFUrl, aNewParm ) );
                // update context
                aContext.URL = aPDFUrl;

                // create and initialize PDFWriter
                #if defined __SUNPRO_CC
                #pragma disable_warn
                #endif
                pWriter.reset( new vcl::PDFWriter( aContext, uno::Reference< beans::XMaterialHolder >() ) );
                #if defined __SUNPRO_CC
                #pragma enable_warn
                #endif
            }

            pWriter->NewPage( TenMuToPt( aNewParm.maPageSize.Width() ),
                              TenMuToPt( aNewParm.maPageSize.Height() ),
                              vcl::PDFWriter::Portrait );

            pWriter->PlayMetafile( aPageFile, aMtfContext, NULL );
        }
    }

    // emit the last file
    if( pWriter )
        pWriter->Emit();

    // handle collate, copy count and multiple jobs correctly
    int nOuterJobs = 1;
    if( bSinglePrintJobs )
    {
        nOuterJobs = nCopies;
        m_aJobData.m_nCopies = 1;
    }
    else
    {
        if( bCollate )
        {
            if( aPDFFiles.size() == 1 && pPrinter->HasSupport( SUPPORT_COLLATECOPY ) )
            {
                m_aJobData.setCollate( true );
                m_aJobData.m_nCopies = nCopies;
            }
            else
            {
                nOuterJobs = nCopies;
                m_aJobData.m_nCopies = 1;
            }
        }
        else
        {
            m_aJobData.setCollate( false );
            m_aJobData.m_nCopies = nCopies;
        }
    }

    // spool files
    if( ! i_pFileName && ! bAborted )
    {
        bool bFirstJob = true;
        for( int nCurJob = 0; nCurJob < nOuterJobs; nCurJob++ )
        {
            for( size_t i = 0; i < aPDFFiles.size(); i++ )
            {
                oslFileHandle pFile = NULL;
                osl_openFile( aPDFFiles[i].maTmpURL.pData, &pFile, osl_File_OpenFlag_Read );
                if (pFile && (osl_setFilePos(pFile, osl_Pos_Absolut, 0) == osl_File_E_None))
                {
                    std::vector< char > buffer( 0x10000, 0 );
                    // update job data with current page size
                    Size aPageSize( aPDFFiles[i].maParameters.maPageSize );
                    m_aJobData.setPaper( TenMuToPt( aPageSize.Width() ), TenMuToPt( aPageSize.Height() ) );
                    // update job data with current paperbin
                    m_aJobData.setPaperBin( aPDFFiles[i].maParameters.mnPaperBin );

                    // spool current file
                    FILE* fp = PrinterInfoManager::get().startSpool( pPrinter->GetName(), i_rController.isDirectPrint() );
                    if( fp )
                    {
                        sal_uInt64 nBytesRead = 0;
                        do
                        {
                            osl_readFile( pFile, &buffer[0], buffer.size(), &nBytesRead );
                            if( nBytesRead > 0 )
                            {
                                size_t nBytesWritten = fwrite(&buffer[0], 1, nBytesRead, fp);
                                OSL_ENSURE(nBytesRead == nBytesWritten, "short write");
                                if (nBytesRead != nBytesWritten)
                                    break;
                            }
                        } while( nBytesRead == buffer.size() );
                        rtl::OUStringBuffer aBuf( i_rJobName.getLength() + 8 );
                        aBuf.append( i_rJobName );
                        if( i > 0 || nCurJob > 0 )
                        {
                            aBuf.append( sal_Unicode(' ') );
                            aBuf.append( sal_Int32( i + nCurJob * aPDFFiles.size() ) );
                        }
                        PrinterInfoManager::get().endSpool( pPrinter->GetName(), aBuf.makeStringAndClear(), fp, m_aJobData, bFirstJob );
                        bFirstJob = false;
                    }
                }
                osl_closeFile( pFile );
            }
        }
    }

    // job has been spooled
    i_rController.setJobState( bAborted ? view::PrintableState_JOB_ABORTED : view::PrintableState_JOB_SPOOLED );

    // clean up the temporary PDF files
    if( ! i_pFileName || bAborted )
    {
        for( size_t i = 0; i < aPDFFiles.size(); i++ )
        {
            osl_removeFile( aPDFFiles[i].maTmpURL.pData );
            OSL_TRACE( "removed print PDF file %s", rtl::OUStringToOString( aPDFFiles[i].maTmpURL, RTL_TEXTENCODING_UTF8 ).getStr() );
        }
    }

    return sal_True;
}


class PrinterUpdate
{
    static Timer* pPrinterUpdateTimer;
    static int    nActiveJobs;

    static void doUpdate();
    DECL_STATIC_LINK( PrinterUpdate, UpdateTimerHdl, void* );
public:
    static void update(SalGenericInstance &rInstance);
    static void jobStarted() { nActiveJobs++; }
    static void jobEnded();
};

Timer* PrinterUpdate::pPrinterUpdateTimer = NULL;
int PrinterUpdate::nActiveJobs = 0;

void PrinterUpdate::doUpdate()
{
    ::psp::PrinterInfoManager& rManager( ::psp::PrinterInfoManager::get() );
    SalGenericInstance *pInst = static_cast<SalGenericInstance *>( GetSalData()->m_pInstance );
    if( pInst && rManager.checkPrintersChanged( false ) )
        pInst->PostPrintersChanged();
}

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

IMPL_STATIC_LINK_NOINSTANCE( PrinterUpdate, UpdateTimerHdl, void*, EMPTYARG )
{
    if( nActiveJobs < 1 )
    {
        doUpdate();
        delete pPrinterUpdateTimer;
        pPrinterUpdateTimer = NULL;
    }
    else
        pPrinterUpdateTimer->Start();

    return 0;
}

void PrinterUpdate::update(SalGenericInstance &rInstance)
{
    if( Application::GetSettings().GetMiscSettings().GetDisablePrinting() )
        return;

    if( ! rInstance.isPrinterInit() )
    {
        // #i45389# start background printer detection
        psp::PrinterInfoManager::get();
        return;
    }

    if( nActiveJobs < 1 )
        doUpdate();
    else if( ! pPrinterUpdateTimer )
    {
        pPrinterUpdateTimer = new Timer();
        pPrinterUpdateTimer->SetTimeout( 500 );
        pPrinterUpdateTimer->SetTimeoutHdl( STATIC_LINK( NULL, PrinterUpdate, UpdateTimerHdl ) );
        pPrinterUpdateTimer->Start();
    }
}

void SalGenericInstance::updatePrinterUpdate()
{
    PrinterUpdate::update(*this);
}

void SalGenericInstance::jobStartedPrinterUpdate()
{
    PrinterUpdate::jobStarted();
}

void PrinterUpdate::jobEnded()
{
    nActiveJobs--;
    if( nActiveJobs < 1 )
    {
        if( pPrinterUpdateTimer )
        {
            pPrinterUpdateTimer->Stop();
            delete pPrinterUpdateTimer;
            pPrinterUpdateTimer = NULL;
            doUpdate();
        }
    }
}

void SalGenericInstance::jobEndedPrinterUpdate()
{
    PrinterUpdate::jobEnded();
}

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