kmmanager.cpp

/*
 *  This file is part of the KDE libraries
 *  Copyright (c) 2001 Michael Goffioul <tdeprint@swing.be>
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Library General Public
 *  License version 2 as published by the Free Software Foundation.
 *
 *  This library 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
 *  Library General Public License for more details.
 *
 *  You should have received a copy of the GNU Library General Public License
 *  along with this library; see the file COPYING.LIB.  If not, write to
 *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 *  Boston, MA 02110-1301, USA.
 **/
 
#include "kmmanager.h"
#include "kmprinter.h"
#include "kmdbentry.h"
#include "kmfactory.h"
#include "kmvirtualmanager.h"
#include "kmspecialmanager.h"
#include "printerfilter.h"
#include "kprinter.h"
 
#include <zlib.h>
#include <tqfile.h>
#include <tdestandarddirs.h>
#include <tdeconfig.h>
#include <tdelocale.h>
#include <kdebug.h>
#include <tdeapplication.h>
#include <klibloader.h>
#include <unistd.h>
 
KMManager::KMManager(TQObject *parent, const char *name)
: TQObject(parent,name)
{
    m_printers.setAutoDelete(true);
    m_fprinters.setAutoDelete(false);
    m_hasmanagement = false;
    m_printeroperationmask = 0;
    m_serveroperationmask = 0;
    m_printerfilter = new PrinterFilter(this);
 
    m_specialmgr = new KMSpecialManager(this);
    TQ_CHECK_PTR(m_specialmgr);
    m_virtualmgr = new KMVirtualManager(this);
    TQ_CHECK_PTR(m_virtualmgr);
 
    // set default to true to not disturb code that
    // hasn't been adapted yet. Otherwise, should be false
    m_updatepossible = true;
}
 
KMManager::~KMManager()
{
}
 
KMManager* KMManager::self()
{
    return KMFactory::self()->manager();
}
 
bool KMManager::notImplemented()
{
    setErrorMsg(i18n("This operation is not implemented."));
    return false;
}
 
bool KMManager::modifyPrinter(KMPrinter *oldp, KMPrinter *newp)
{
    if (oldp->printerName() != newp->printerName())
    {
        // remove the old one, then create the new one. But before removing
        // the old one, retrieve its driver so that the new printer has the
        // same.
        DrMain  *driver = loadPrinterDriver(oldp, true);
        newp->setDriver(driver);
        if (!removePrinter(oldp))
            return false;
    }
    return createPrinter(newp);
}
 
bool KMManager::createPrinter(KMPrinter*)
{
    return notImplemented();
}
 
bool KMManager::removePrinter(KMPrinter*)
{
    return notImplemented();
}
 
bool KMManager::removePrinter(const TQString& name)
{
    KMPrinter   *p = findPrinter(name);
    return (p ? removePrinter(p) : false);
}
 
bool KMManager::enablePrinter(KMPrinter*, bool)
{
    return notImplemented();
}
 
bool KMManager::enablePrinter(const TQString& name, bool state)
{
    KMPrinter   *p = findPrinter(name);
    return (p ? enablePrinter(p, state) : false);
}
 
bool KMManager::startPrinter(KMPrinter*, bool)
{
    return notImplemented();
}
 
bool KMManager::startPrinter(const TQString& name, bool state)
{
    KMPrinter   *p = findPrinter(name);
    return (p ? startPrinter(p, state) : false);
}
 
bool KMManager::upPrinter(KMPrinter *p, bool state)
{
    bool    result = enablePrinter(p, state);
    if (result)
        result = startPrinter(p, state);
    return result;
}
 
bool KMManager::completePrinter(KMPrinter*)
{
    notImplemented();
    return true;    // not false to allow instance config/creation
}
 
bool KMManager::completePrinterShort(KMPrinter *p)
{
    return completePrinter(p);
}
 
bool KMManager::completePrinter(const TQString& name)
{
    KMPrinter   *p = findPrinter(name);
    return (p ? completePrinter(p) : false);
}
 
bool KMManager::setDefaultPrinter(KMPrinter*)
{
    return notImplemented();
}
 
bool KMManager::setDefaultPrinter(const TQString& name)
{
    KMPrinter   *p = findPrinter(name);
    return (p ? setDefaultPrinter(p) : false);
}
 
bool KMManager::testPrinter(KMPrinter *prt)
{
    // standard Test mechanism
    TQString    testpage = testPage();
    if (testpage.isEmpty())
    {
        setErrorMsg(i18n("Unable to locate test page."));
        return false;
    }
    KPrinter    pr;
    bool        prExist = (findPrinter(prt->printerName()) != 0), result(false);
    pr.setPrinterName(prt->printerName());
    pr.setSearchName(prt->name());
    pr.setDocName("TDE Print Test");
    // the printing mechanism may involve some needed operations on the
    // printer, so temporary printers (created when testing) should be
    // temporarily added to the printer list, then taken out.
    if (!prExist)
        m_printers.append(prt);
    result = pr.printFiles(testpage, false, false);
    if (!prExist)
        m_printers.take(m_printers.count()-1);
    return result;
    // return notImplemented();
}
 
KMPrinter* KMManager::findPrinter(const TQString& name)
{
    TQPtrListIterator<KMPrinter>    it(m_printers);
    for (;it.current();++it)
        if (it.current()->name() == name) return it.current();
    //setErrorMsg(i18n("%1: printer not found.").arg(name));
    return 0;
}
 
KMPrinter* KMManager::softDefault() const
{
    TQPtrListIterator<KMPrinter>    it(m_printers);
    for (;it.current();++it)
        if (it.current()->isSoftDefault()) return it.current();
    return 0;
}
 
KMPrinter* KMManager::hardDefault() const
{
    TQPtrListIterator<KMPrinter>    it(m_printers);
    for (; it.current();++it)
        if (it.current()->isHardDefault())
            return it.current();
    return 0;
}
 
KMPrinter* KMManager::defaultPrinter()
{
    printerList(false);
    KMPrinter   *prt = softDefault();
    if (!prt)
        prt = hardDefault();
    return prt;
}
 
TQPtrList<KMPrinter>* KMManager::printerList(bool reload)
{
    setErrorMsg(TQString::null);
    //kdDebug(500) << "Getting printer list: " << reload << endl;
 
    if (reload || m_printers.count() == 0)
    {
        // reset filter
        m_printerfilter->update();
        m_fprinters.clear();
 
        // first discard all printers
        discardAllPrinters(true);
 
        // make sure virtual printers will be reloaded if we don't have
        // any printer (for example if settings are wrong)
        if (m_printers.count() == 0)
            m_virtualmgr->reset();
 
        // List real printers (in subclasses)
        if ( m_updatepossible )
            listPrinters();
        // Listing of special printers has to be done before the instances
        // because now special printers can also have instances
        m_specialmgr->refresh();
        // list virtual printers (and undiscard virtual printers if necessary)
        if ( m_updatepossible )
            m_virtualmgr->refresh();
 
        // remove discarded printers
        for (uint i=0; i<m_printers.count(); i++)
        {
            KMPrinter   *prt = m_printers.at(i);
            if (prt->isDiscarded())
            {
                m_printers.remove(i);
                i--;
            }
            else if (prt->isSpecial() || m_printerfilter->filter(prt))
                m_fprinters.append(prt);
        }
 
        // try to find the default printer from these situations:
        //   - it already exists from .lpoptions file
        //   - use the PRINTER variable
        if (!softDefault())
        {
            KMPrinter   *defprinter = findPrinter(TQString::fromLatin1(getenv("PRINTER")));
            if (defprinter)
                setSoftDefault(defprinter);
        }
        emit printerListUpdated();
    }
 
    return &m_fprinters;
}
 
TQPtrList<KMPrinter>* KMManager::printerListComplete(bool reload)
{
    printerList(reload);
    return &m_printers;
}
 
void KMManager::listPrinters()
{
    // do nothing
}
 
void KMManager::addPrinter(KMPrinter *p)
{
    if (p)
    {
        if (p->name().isEmpty())
            // discard printer with empty name
            delete p;
        else
        {
            KMPrinter   *other = findPrinter(p->name());
            if (other)
            {
                other->copy(*p);
                delete p;
            }
            else
            {
                p->setDiscarded(false);
                m_printers.inSort(p);
            }
        }
    }
}
 
TQString KMManager::driverDbCreationProgram()
{
    return TQString::null;
}
 
TQString KMManager::driverDirectory()
{
    return TQString::null;
}
 
DrMain* KMManager::loadPrinterDriver(KMPrinter*, bool)
{
    return NULL;
}
 
DrMain* KMManager::loadDbDriver(KMDBEntry *entry)
{
    return loadFileDriver(entry->file);
}
 
DrMain* KMManager::loadFileDriver(const TQString&)
{
    return NULL;
}
 
DrMain* KMManager::loadDriver(KMPrinter *p, bool config)
{
    if (p->isSpecial())
        return m_specialmgr->loadDriver(p);
    else
        return loadPrinterDriver(p, config);
}
 
bool KMManager::savePrinterDriver(KMPrinter*,DrMain*)
{
    return notImplemented();
}
 
bool KMManager::uncompressFile(const TQString& filename, TQString& destname)
{
    TQFile  f(filename);
    bool    result(true);
    destname = TQString::null;
    if (f.exists() && f.open(IO_ReadOnly))
    {
        char    buf[1024] = {0};
        f.readBlock(buf,2);
        if ((uchar)(buf[0]) == 037 && (uchar)(buf[1]) == 0213)
        {
            f.close();
            destname = locateLocal("tmp","tdeprint_") + TDEApplication::randomString(8);
            f.setName(destname);
 
            if (f.open(IO_WriteOnly))
            {
                gzFile  in = gzopen(filename.latin1(),"r");
                int n(0);
                while ((n=gzread(in,buf,1024)) > 0)
                    if (f.writeBlock(buf,n) != n)
                        break;
                if (n != 0) result = false;
                gzclose(in);
                f.close();
            }
        }
    }
    return result;
}
 
void KMManager::setHardDefault(KMPrinter *p)
{
    TQPtrListIterator<KMPrinter>    it(m_printers);
    for (;it.current();++it)
        it.current()->setHardDefault(false);
    if (p) p->setHardDefault(true);
}
 
void KMManager::setSoftDefault(KMPrinter *p)
{
    TQPtrListIterator<KMPrinter>    it(m_printers);
    for (;it.current();++it)
        {
        it.current()->setSoftDefault(false);
        it.current()->setOwnSoftDefault(false);
        }
    if (p)
        {
                p->setSoftDefault(true);
                KMPrinter       *pp = findPrinter(p->printerName());
                if (pp)
                        pp->setOwnSoftDefault(true);
        }
}
 
bool KMManager::restartServer()
{
    return notImplemented();
}
 
bool KMManager::configureServer(TQWidget*)
{
    return notImplemented();
}
 
TQString KMManager::testPage()
{
    TDEConfig   *conf = KMFactory::self()->printConfig();
    conf->setGroup("General");
    TQString    tpage = conf->readPathEntry("TestPage");
    if (tpage.isEmpty())
        tpage = locate("data","tdeprint/testprint.ps");
    return tpage;
}
 
void KMManager::discardAllPrinters(bool on)
{
    TQPtrListIterator<KMPrinter>    it(m_printers);
    for (;it.current();++it)
        if (!on || !it.current()->isSpecial())
            it.current()->setDiscarded(on);
}
 
bool KMManager::validateDbDriver(KMDBEntry*)
{
    return true;
}
 
bool KMManager::createSpecialPrinter(KMPrinter *p)
{
    if (p && p->isSpecial())
    {
        KMPrinter   *old = findPrinter(p->name());
        if (old && !old->isSpecial())
        {
            setErrorMsg(i18n("Can't overwrite regular printer with special printer settings."));
            return false;
        }
        // if the special printer already exists, it will be overwritten
        addPrinter(p);
        return m_specialmgr->savePrinters();
    }
    return false;
}
 
bool KMManager::removeSpecialPrinter(KMPrinter *p)
{
    if (p && p->isSpecial() && m_printers.findRef(p) != -1)
    {
        m_printers.removeRef(p);
        return m_specialmgr->savePrinters();
    }
    return false;
}
 
/* format of output:
    Class0, URI0, Desc0, Printer0, Class1, URI1, Desc1, Printer1, ...
 
  Defaults to 3 parallel printers
*/
TQStringList KMManager::detectLocalPrinters()
{
    TQStringList    list;
    for (int i=0; i<3; i++)
        list << TQString() << TQString::fromLatin1("parallel:/dev/lp%1").arg(i) << i18n("Parallel Port #%1").arg(i+1) << TQString();
    return list;
}
 
int KMManager::addPrinterWizard(TQWidget *parent)
{
    KLibrary    *lib = KLibLoader::self()->library("libtdeprint_management_module");
    if (!lib)
        setErrorMsg(i18n("Unable to load TDE print management library: %1").arg(KLibLoader::self()->lastErrorMessage()));
    else
    {
        int (*func)(TQWidget*) = (int(*)(TQWidget*))lib->symbol("add_printer_wizard");
        if (!func)
            setErrorMsg(i18n("Unable to find wizard object in management library."));
        else
            return func(parent);
    }
    return (-1);
}
 
bool KMManager::invokeOptionsDialog(TQWidget *parent)
{
    KLibrary    *lib = KLibLoader::self()->library("libtdeprint_management_module");
    if (!lib)
        setErrorMsg(i18n("Unable to load TDE print management library: %1").arg(KLibLoader::self()->lastErrorMessage()));
    else
    {
        bool (*func)(TQWidget*) = (bool(*)(TQWidget*))lib->symbol("config_dialog");
        if (!func)
            setErrorMsg(i18n("Unable to find options dialog in management library."));
        else
            return func(parent);
    }
    return false;
}
 
void KMManager::createPluginActions(TDEActionCollection*)
{
}
 
void KMManager::validatePluginActions(TDEActionCollection*, KMPrinter*)
{
}
 
void KMManager::enableFilter(bool on)
{
    m_printerfilter->setEnabled(on);
}
 
bool KMManager::isFilterEnabled() const
{
    return m_printerfilter->isEnabled();
}
 
TQString KMManager::stateInformation()
{
    return i18n("No plugin information available");
}
 
void KMManager::checkUpdatePossible()
{
    m_updatepossible = false;
    checkUpdatePossibleInternal();
}
 
void KMManager::checkUpdatePossibleInternal()
{
    setUpdatePossible( true );
}
 
void KMManager::setUpdatePossible( bool value )
{
    if ( value != m_updatepossible )
        m_virtualmgr->reset();
    m_updatepossible = value;
    emit updatePossible( m_updatepossible );
}
 
#include "kmmanager.moc"