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kapplication.cpp

/* This file is part of the KDE libraries
    Copyright (C) 1997 Matthias Kalle Dalheimer (kalle@kde.org)
    Copyright (C) 1998, 1999, 2000 KDE Team

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    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., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.
        */

// $Id: kapplication.cpp,v 1.637.2.14 2004/06/08 09:27:57 waba Exp $

#include "config.h"

#undef QT_NO_TRANSLATION
#include <qtranslator.h>
#define QT_NO_TRANSLATION
#include <qdir.h>
#include <qptrcollection.h>
#include <qwidgetlist.h>
#include <qstrlist.h>
#include <qfile.h>
#include <qmessagebox.h>
#include <qtextstream.h>
#include <qregexp.h>
#include <qlineedit.h>
#include <qtextedit.h>
#include <qsessionmanager.h>
#include <qptrlist.h>
#include <qtimer.h>
#include <qstylesheet.h>
#include <qpixmapcache.h>
#include <qtooltip.h>
#include <qstylefactory.h>
#include <qmetaobject.h>
#ifndef QT_NO_SQL
#include <qsqlpropertymap.h>
#endif

#undef QT_NO_TRANSLATION
#include "kapplication.h"
#define QT_NO_TRANSLATION
#include <kglobal.h>
#include <kstandarddirs.h>
#include <kdebug.h>
#include <klocale.h>
#include <kstyle.h>
#include <kiconloader.h>
#include <kclipboard.h>
#include <kconfig.h>
#include <ksimpleconfig.h>
#include <kcmdlineargs.h>
#include <kaboutdata.h>
#include <kglobalsettings.h>
#include <kcrash.h>
#include <kdatastream.h>
#include <klibloader.h>
#include <kmimesourcefactory.h>
#include <kstdaccel.h>
#include <kaccel.h>
#include "kcheckaccelerators.h"
#include <qptrdict.h>
#include <kmacroexpander.h>
#include <kshell.h>
#include <kprotocolinfo.h>

#if defined Q_WS_X11 && ! defined K_WS_QTONLY
#include <kstartupinfo.h> // schroder
#endif

#include <dcopclient.h>
#include <dcopref.h>

#include <sys/types.h>
#ifdef HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#include <sys/wait.h>

#include "kwin.h"

#include <fcntl.h>
#include <stdlib.h> // getenv(), srand(), rand()
#include <signal.h>
#include <unistd.h>
#include <time.h>
#include <sys/time.h>
#include <errno.h>
#include <string.h>
#include <netdb.h>
#if defined Q_WS_X11 && ! defined K_WS_QTONLY
//#ifndef Q_WS_QWS //FIXME(E): NetWM should talk to QWS...
#include <netwm.h> // schroder
#endif

#include "kprocctrl.h"

#ifdef HAVE_PATHS_H
#include <paths.h>
#endif

//#if defined Q_WS_X11 && ! defined K_WS_QTONLY
#ifdef Q_WS_X11
#include <X11/Xlib.h> // schrode
#include <X11/Xutil.h> // schrode
#include <X11/Xatom.h> // schrode
#include <X11/SM/SMlib.h> // schrode
#include <fixx11h.h> // schrode
#endif
#include <KDE-ICE/ICElib.h>

#ifdef Q_WS_X11
#define DISPLAY "DISPLAY"
#elif defined(Q_WS_QWS)
#define DISPLAY "QWS_DISPLAY"
#endif

#if defined Q_WS_X11 && ! defined K_WS_QTONLY
#include <kipc.h> // schroder
#endif

#include "kappdcopiface.h"

bool kde_have_kipc = true; // magic hook to disable kipc in kdm
bool kde_kiosk_exception = false; // flag to disable kiosk restrictions
bool kde_kiosk_admin = false;

KApplication* KApplication::KApp = 0L;
bool KApplication::loadedByKdeinit = false;
DCOPClient *KApplication::s_DCOPClient = 0L;
bool KApplication::s_dcopClientNeedsPostInit = false;

static Atom atom_DesktopWindow;
static Atom atom_NetSupported;
#if KDE_IS_VERSION( 3, 2, 91 )
#warning Obsolete, remove.
// remove atom_KdeNetUserTime related stuff (l.lunak@kde.org)
#endif
static Atom atom_KdeNetUserTime;
static Atom kde_net_wm_user_time     = 0;
#if KDE_IS_VERSION( 3, 2, 91 )
#warning This should be in Qt already, check.
// remove things related to qt_x_user_time that should be in Qt by now (l.lunak@kde.org)
#endif
Time   qt_x_user_time = CurrentTime;
extern Time qt_x_time;
static Atom kde_xdnd_drop;

// duplicated from patched Qt, so that there won't be unresolved symbols if Qt gets
// replaced by unpatched one
bool qt_qclipboard_bailout_hack = false;

template class QPtrList<KSessionManaged>;

#ifdef Q_WS_X11
extern "C" {
static int kde_xio_errhandler( Display * dpy )
{
  return kapp->xioErrhandler( dpy );
}

static int kde_x_errhandler( Display *dpy, XErrorEvent *err )
{
  return kapp->xErrhandler( dpy, err );
}

}
#endif

extern "C" {
static void kde_ice_ioerrorhandler( IceConn conn )
{
    if(kapp)
        kapp->iceIOErrorHandler( conn );
    // else ignore the error for now
}
}

/*
  Private data to make keeping binary compatibility easier
 */
class KApplicationPrivate
{
public:
  KApplicationPrivate()
    :   actionRestrictions( false ),
    refCount( 1 ),
    oldIceIOErrorHandler( 0 ),
    checkAccelerators( 0 ),
    overrideStyle( QString::null ),
    startup_id( "0" ),
        app_started_timer( NULL ),
    m_KAppDCOPInterface( 0L ),
    session_save( false ),
        oldXErrorHandler( NULL ),
        oldXIOErrorHandler( NULL )
  {
  }

  ~KApplicationPrivate()
  {}


  bool actionRestrictions : 1;
  bool guiEnabled : 1;
  int refCount;
  IceIOErrorHandler oldIceIOErrorHandler;
  KCheckAccelerators* checkAccelerators;
  QString overrideStyle;
  QString geometry_arg;
  QCString startup_id;
  QTimer* app_started_timer;
  KAppDCOPInterface *m_KAppDCOPInterface;
  bool session_save;
  int (*oldXErrorHandler)(Display*,XErrorEvent*);
  int (*oldXIOErrorHandler)(Display*);

  class URLActionRule
  {
  public:
#define checkExactMatch(s, b) \
        if (s.isEmpty()) b = true; \
        else if (s[s.length()-1] == '!') \
        { b = false; s.truncate(s.length()-1); } \
        else b = true;
#define checkStartWildCard(s, b) \
        if (s.isEmpty()) b = true; \
        else if (s[0] == '*') \
        { b = true; s = s.mid(1); } \
        else b = false;
#define checkEqual(s, b) \
        b = (s == "=");

     URLActionRule(const QString &act,
                   const QString &bProt, const QString &bHost, const QString &bPath,
                   const QString &dProt, const QString &dHost, const QString &dPath,
                   bool perm)
                   : action(act),
                     baseProt(bProt), baseHost(bHost), basePath(bPath),
                     destProt(dProt), destHost(dHost), destPath(dPath),
                     permission(perm)
                   {
                      checkExactMatch(baseProt, baseProtWildCard);
                      checkStartWildCard(baseHost, baseHostWildCard);
                      checkExactMatch(basePath, basePathWildCard);
                      checkExactMatch(destProt, destProtWildCard);
                      checkStartWildCard(destHost, destHostWildCard);
                      checkExactMatch(destPath, destPathWildCard);
                      checkEqual(destProt, destProtEqual);
                      checkEqual(destHost, destHostEqual);
                   }

     bool baseMatch(const KURL &url, const QString &protClass)
     {
        if (baseProtWildCard)
        {
           if ( !baseProt.isEmpty() && !url.protocol().startsWith(baseProt) &&
                (protClass.isEmpty() || (protClass != baseProt)) )
              return false;
        }
        else
        {
           if ( (url.protocol() != baseProt) &&
                (protClass.isEmpty() || (protClass != baseProt)) )
              return false;
        }
        if (baseHostWildCard)
        {
           if (!baseHost.isEmpty() && !url.host().endsWith(baseHost))
              return false;
        }
        else
        {
           if (url.host() != baseHost)
              return false;
        }
        if (basePathWildCard)
        {
           if (!basePath.isEmpty() && !url.path().startsWith(basePath))
              return false;
        }
        else
        {
           if (url.path() != basePath)
              return false;
        }
        return true;
     }

     bool destMatch(const KURL &url, const QString &protClass, const KURL &base, const QString &baseClass)
     {
        if (destProtEqual)
        {
           if ( (url.protocol() != base.protocol()) &&
                (protClass.isEmpty() || baseClass.isEmpty() || protClass != baseClass) )
              return false;
        }
        else if (destProtWildCard)
        {
           if ( !destProt.isEmpty() && !url.protocol().startsWith(destProt) &&
                (protClass.isEmpty() || (protClass != destProt)) )
              return false;
        }
        else
        {
           if ( (url.protocol() != destProt) &&
                (protClass.isEmpty() || (protClass != destProt)) )
              return false;
        }
        if (destHostWildCard)
        {
           if (!destHost.isEmpty() && !url.host().endsWith(destHost))
              return false;
        }
        else if (destHostEqual)
        {
           if (url.host() != base.host())
              return false;
        }
        else
        {
           if (url.host() != destHost)
              return false;
        }
        if (destPathWildCard)
        {
           if (!destPath.isEmpty() && !url.path().startsWith(destPath))
              return false;
        }
        else
        {
           if (url.path() != destPath)
              return false;
        }
        return true;
     }

     QString action;
     QString baseProt;
     QString baseHost;
     QString basePath;
     QString destProt;
     QString destHost;
     QString destPath;
     bool baseProtWildCard : 1;
     bool baseHostWildCard : 1;
     bool basePathWildCard : 1;
     bool destProtWildCard : 1;
     bool destHostWildCard : 1;
     bool destPathWildCard : 1;
     bool destProtEqual    : 1;
     bool destHostEqual    : 1;
     bool permission;
  };
  QPtrList<URLActionRule> urlActionRestrictions;

    QString sessionKey;
    QString pSessionConfigFile;
};


static QPtrList<QWidget>*x11Filter = 0;
static bool autoDcopRegistration = true;

void KApplication::installX11EventFilter( QWidget* filter )
{
    if ( !filter )
        return;
    if (!x11Filter)
        x11Filter = new QPtrList<QWidget>;
    connect ( filter, SIGNAL( destroyed() ), this, SLOT( x11FilterDestroyed() ) );
    x11Filter->append( filter );
}

void KApplication::x11FilterDestroyed()
{
    removeX11EventFilter( static_cast< const QWidget* >( sender()));
}

void KApplication::removeX11EventFilter( const QWidget* filter )
{
    if ( !x11Filter || !filter )
        return;
    x11Filter->removeRef( filter );
    if ( x11Filter->isEmpty() ) {
        delete x11Filter;
        x11Filter = 0;
    }
}

// FIXME: remove this when we've get a better method of
// customizing accelerator handling -- hopefully in Qt.
// For now, this is set whenever an accelerator is overridden
// in KAccelEventHandler so that the AccelOverride isn't sent twice. -- ellis, 19/10/02
extern bool kde_g_bKillAccelOverride;

bool KApplication::notify(QObject *receiver, QEvent *event)
{
    QEvent::Type t = event->type();
    if (kde_g_bKillAccelOverride)
    {
       kde_g_bKillAccelOverride = false;
       // Indicate that the accelerator has been overridden.
       if (t == QEvent::AccelOverride)
       {
          static_cast<QKeyEvent *>(event)->accept();
          return true;
       }
       else
          kdWarning(125) << "kde_g_bKillAccelOverride set, but received an event other than AccelOverride." << endl;
    }

    if ((t == QEvent::AccelOverride) || (t == QEvent::KeyPress))
    {
       static const KShortcut& _selectAll = KStdAccel::selectAll();
       if (receiver && receiver->inherits("QLineEdit"))
       {
          QLineEdit *edit = static_cast<QLineEdit *>(receiver);
          // We have a keypress for a lineedit...
          QKeyEvent *kevent = static_cast<QKeyEvent *>(event);
          KKey key(kevent);
          if (_selectAll.contains(key))
          {
             if (t == QEvent::KeyPress)
             {
                edit->selectAll();
                return true;
             }
             else
             {
                kevent->accept();
             }
          }
          // Ctrl-U deletes from start of line.
          if (key == KKey(Qt::CTRL + Qt::Key_U))
          {
             if (t == QEvent::KeyPress)
             {
                if (!edit->isReadOnly())
                {
                   QString t(edit->text());
                   t = t.mid(edit->cursorPosition());
                   edit->validateAndSet(t, 0, 0, 0);
                }
                return true;
             }
             else
             {
                kevent->accept();
             }

          }
       }
       if (receiver && receiver->inherits("QTextEdit"))
       {
          QTextEdit *medit = static_cast<QTextEdit *>(receiver);
          // We have a keypress for a multilineedit...
          QKeyEvent *kevent = static_cast<QKeyEvent *>(event);
          if (_selectAll.contains(KKey(kevent)))
          {
             if (t == QEvent::KeyPress)
             {
                medit->selectAll();
                return true;
             }
             else
             {
                kevent->accept();
             }
          }
       }
    }
    if( event->type() == QEvent::Show && receiver->isWidgetType())
    {
    QWidget* w = static_cast< QWidget* >( receiver );
        if( w->isTopLevel() && !startupId().isEmpty()) // TODO better done using window group leader?
            KStartupInfo::setWindowStartupId( w->winId(), startupId());
    if( w->isTopLevel() && qt_x_user_time != CurrentTime ) // CurrentTime means no input event yet
            XChangeProperty( qt_xdisplay(), w->winId(), kde_net_wm_user_time, XA_CARDINAL,
                32, PropModeReplace, (unsigned char*)&qt_x_user_time, 1 );
    }
    if( event->type() == QEvent::Show && receiver->isWidgetType())
    {
    QWidget* w = static_cast< QWidget* >( receiver );
        if( w->isTopLevel() && !w->testWFlags( WX11BypassWM ) && !w->isPopup() && !event->spontaneous())
        {
            if( d->app_started_timer == NULL )
            {
                d->app_started_timer = new QTimer( this );
                connect( d->app_started_timer, SIGNAL( timeout()), SLOT( checkAppStartedSlot()));
            }
            if( !d->app_started_timer->isActive())
                d->app_started_timer->start( 0, true );
        }
    }
    return QApplication::notify(receiver, event);
}

void KApplication::checkAppStartedSlot()
{
    KStartupInfo::handleAutoAppStartedSending();
}

// the help class for session management communication
static QPtrList<KSessionManaged>* sessionClients()
{
    static QPtrList<KSessionManaged>* session_clients = 0L;
    if ( !session_clients )
        session_clients = new QPtrList<KSessionManaged>;
    return session_clients;
}

/*
  Auxiliary function to calculate a a session config name used for the
  instance specific config object.
  Syntax:  "session/<appname>_<sessionId>"
 */
QString KApplication::sessionConfigName() const
{
#if QT_VERSION < 0x030100
    return QString("session/%1_%2_%3").arg(name()).arg(sessionId()).arg(d->sessionKey);
#else
    QString sessKey = sessionKey();
    if ( sessKey.isEmpty() && !d->sessionKey.isEmpty() )
        sessKey = d->sessionKey;
    return QString("session/%1_%2_%3").arg(name()).arg(sessionId()).arg(sessKey);
#endif
}

#ifndef Q_WS_QWS
static SmcConn mySmcConnection = 0;
static SmcConn tmpSmcConnection = 0;
#else
// FIXME(E): Implement for Qt Embedded
// Possibly "steal" XFree86's libSM?
#endif
static QTime* smModificationTime = 0;

KApplication::KApplication( int& argc, char** argv, const QCString& rAppName,
                            bool allowStyles, bool GUIenabled ) :
  QApplication( argc, argv, GUIenabled ), KInstance(rAppName),
#ifdef Q_WS_X11
  display(0L),
#endif
  d (new KApplicationPrivate())
{
    read_app_startup_id();
    if (!GUIenabled)
       allowStyles = false;
    useStyles = allowStyles;
    Q_ASSERT (!rAppName.isEmpty());
    setName(rAppName);

    installSigpipeHandler();
    KCmdLineArgs::initIgnore(argc, argv, rAppName.data());
    parseCommandLine( );
    init(GUIenabled);
    d->m_KAppDCOPInterface = new KAppDCOPInterface(this);
}

KApplication::KApplication( bool allowStyles, bool GUIenabled ) :
  QApplication( *KCmdLineArgs::qt_argc(), *KCmdLineArgs::qt_argv(),
                GUIenabled ),
  KInstance( KCmdLineArgs::about),
#ifdef Q_WS_X11
  display(0L),
#endif
  d (new KApplicationPrivate)
{
    read_app_startup_id();
    if (!GUIenabled)
       allowStyles = false;
    useStyles = allowStyles;
    setName( instanceName() );

    installSigpipeHandler();
    parseCommandLine( );
    init(GUIenabled);
    d->m_KAppDCOPInterface = new KAppDCOPInterface(this);
}

KApplication::KApplication( bool allowStyles, bool GUIenabled, KInstance* _instance ) :
  QApplication( *KCmdLineArgs::qt_argc(), *KCmdLineArgs::qt_argv(),
                GUIenabled ),
  KInstance( _instance ),
#ifdef Q_WS_X11
  display(0L),
#endif
  d (new KApplicationPrivate)
{
    read_app_startup_id();
    if (!GUIenabled)
       allowStyles = false;
    useStyles = allowStyles;
    setName( instanceName() );

    installSigpipeHandler();
    parseCommandLine( );
    init(GUIenabled);
    d->m_KAppDCOPInterface = new KAppDCOPInterface(this);
}

#ifdef Q_WS_X11
KApplication::KApplication(Display *display, int& argc, char** argv, const QCString& rAppName,
                           bool allowStyles, bool GUIenabled ) :
  QApplication( display ), KInstance(rAppName),
  display(0L),
  d (new KApplicationPrivate())
{
    read_app_startup_id();
    if (!GUIenabled)
       allowStyles = false;
    useStyles = allowStyles;

    Q_ASSERT (!rAppName.isEmpty());
    setName(rAppName);

    installSigpipeHandler();
    KCmdLineArgs::initIgnore(argc, argv, rAppName.data());
    parseCommandLine( );
    init(GUIenabled);
    d->m_KAppDCOPInterface = new KAppDCOPInterface(this);
}
#endif

int KApplication::xioErrhandler( Display* dpy )
{
    if(kapp)
    {
        emit shutDown();
        d->oldXIOErrorHandler( dpy );
    }
    exit( 1 );
    return 0;
}

int KApplication::xErrhandler( Display* dpy, void* err_ )
{ // no idea how to make forward decl. for XErrorEvent
    XErrorEvent* err = static_cast< XErrorEvent* >( err_ );
    if(kapp)
    {
        // add KDE specific stuff here
        d->oldXErrorHandler( dpy, err );
    }
    return 0;
}

void KApplication::iceIOErrorHandler( _IceConn *conn )
{
    emit shutDown();

    if ( d->oldIceIOErrorHandler != NULL )
      (*d->oldIceIOErrorHandler)( conn );

    exit( 1 );
}

class KDETranslator : public QTranslator
{
public:
  KDETranslator(QObject *parent) : QTranslator(parent, "kdetranslator") {}
  virtual QTranslatorMessage findMessage(const char* context,
                     const char *sourceText,
                     const char* message) const
  {
    QTranslatorMessage res;
    res.setTranslation(KGlobal::locale()->translateQt(context, sourceText, message));
    return res;
  }
};

void KApplication::init(bool GUIenabled)
{
  d->guiEnabled = GUIenabled;
  if ((getuid() != geteuid()) ||
      (getgid() != getegid()))
  {
     fprintf(stderr, "The KDE libraries are not designed to run with suid privileges.\n");
     ::exit(127);
  }

  KProcessController::ref();

  (void) KClipboardSynchronizer::self();

  QApplication::setDesktopSettingsAware( false );

  KApp = this;


#ifdef Q_WS_X11 //FIXME(E)
  // create all required atoms in _one_ roundtrip to the X server
  if ( GUIenabled ) {
      const int max = 20;
      Atom* atoms[max];
      char* names[max];
      Atom atoms_return[max];
      int n = 0;

      atoms[n] = &kipcCommAtom;
      names[n++] = (char *) "KIPC_COMM_ATOM";

      atoms[n] = &atom_DesktopWindow;
      names[n++] = (char *) "KDE_DESKTOP_WINDOW";

      atoms[n] = &atom_NetSupported;
      names[n++] = (char *) "_NET_SUPPORTED";

      atoms[n] = &atom_KdeNetUserTime;
      names[n++] = (char *) "_KDE_NET_USER_TIME";

      atoms[n] = &kde_net_wm_user_time;
      names[n++] = (char *) "_NET_WM_USER_TIME";

      atoms[n] = &kde_xdnd_drop;
      names[n++] = (char *) "XdndDrop";

      XInternAtoms( qt_xdisplay(), names, n, false, atoms_return );

      for (int i = 0; i < n; i++ )
      *atoms[i] = atoms_return[i];
  }
#endif

  dcopAutoRegistration();
  dcopClientPostInit();

  smw = 0;

  // Initial KIPC event mask.
#if defined Q_WS_X11 && ! defined K_WS_QTONLY
  kipcEventMask = (1 << KIPC::StyleChanged) | (1 << KIPC::PaletteChanged) |
                  (1 << KIPC::FontChanged) | (1 << KIPC::BackgroundChanged) |
                  (1 << KIPC::ToolbarStyleChanged) | (1 << KIPC::SettingsChanged) |
                  (1 << KIPC::ClipboardConfigChanged);
#endif

  // Trigger creation of locale.
  (void) KGlobal::locale();

  KConfig* config = KGlobal::config();
  d->actionRestrictions = config->hasGroup("KDE Action Restrictions" ) && !kde_kiosk_exception;
  // For brain-dead configurations where the user's local config file is not writable.
  // * We use kdialog to warn the user, so we better not generate warnings from
  //   kdialog itself.
  // * Don't warn if we run with a read-only $HOME
  QCString readOnly = getenv("KDE_HOME_READONLY");
  if (readOnly.isEmpty() && (qstrcmp(name(), "kdialog") != 0))
  {
    KConfigGroupSaver saver(config, "KDE Action Restrictions");
    if (config->readBoolEntry("warn_unwritable_config",true))
       config->checkConfigFilesWritable(true);
  }

  if (GUIenabled)
  {
#ifdef Q_WS_X11
    // this is important since we fork() to launch the help (Matthias)
    fcntl(ConnectionNumber(qt_xdisplay()), F_SETFD, FD_CLOEXEC);
    // set up the fancy (=robust and error ignoring ) KDE xio error handlers (Matthias)
    d->oldXErrorHandler = XSetErrorHandler( kde_x_errhandler );
    d->oldXIOErrorHandler = XSetIOErrorHandler( kde_xio_errhandler );
#endif

    connect( this, SIGNAL( aboutToQuit() ), this, SIGNAL( shutDown() ) );

#ifdef Q_WS_X11 //FIXME(E)
    display = desktop()->x11Display();
#endif

    {
        QStringList plugins = KGlobal::dirs()->resourceDirs( "qtplugins" );
        QStringList::Iterator it = plugins.begin();
        while (it != plugins.end()) {
            addLibraryPath( *it );
            ++it;
        }

    }
    kdisplaySetStyle();
    kdisplaySetFont();
//    kdisplaySetPalette(); done by kdisplaySetStyle
    propagateSettings(SETTINGS_QT);

    // Set default mime-source factory
    // XXX: This is a hack. Make our factory the default factory, but add the
    // previous default factory to the list of factories. Why? When the default
    // factory can't resolve something, it iterates in the list of factories.
    // But it QWhatsThis only uses the default factory. So if there was already
    // a default factory (which happens when using an image library using uic),
    // we prefer KDE's factory and so we put that old default factory in the
    // list and use KDE as the default. This may speed up things as well.
    QMimeSourceFactory* oldDefaultFactory = QMimeSourceFactory::takeDefaultFactory();
    QMimeSourceFactory::setDefaultFactory( mimeSourceFactory() );
    if ( oldDefaultFactory ) {
        QMimeSourceFactory::addFactory( oldDefaultFactory );
    }

    KConfigGroupSaver saver( config, "Development" );
    if( config->hasKey( "CheckAccelerators" ) || config->hasKey( "AutoCheckAccelerators" ))
        d->checkAccelerators = new KCheckAccelerators( this );
  }

  // save and restore the RTL setting, as installTranslator calls qt_detectRTLLanguage,
  // which makes it impossible to use the -reverse cmdline switch with KDE apps
  bool rtl = reverseLayout();
  installTranslator(new KDETranslator(this));
  setReverseLayout( rtl );
  if (i18n( "_: Dear Translator! Translate this string to the string 'LTR' in "
     "left-to-right languages (as english) or to 'RTL' in right-to-left "
     "languages (such as Hebrew and Arabic) to get proper widget layout." ) == "RTL")
    setReverseLayout( !rtl );

  // install appdata resource type
  KGlobal::dirs()->addResourceType("appdata", KStandardDirs::kde_default("data")
                                   + QString::fromLatin1(name()) + '/');
  pSessionConfig = 0L;
  bSessionManagement = true;

#ifdef Q_WS_X11
  // register a communication window for desktop changes (Matthias)
  if (GUIenabled && kde_have_kipc )
  {
    smw = new QWidget(0,0);
    long data = 1;
    XChangeProperty(qt_xdisplay(), smw->winId(),
            atom_DesktopWindow, atom_DesktopWindow,
            32, PropModeReplace, (unsigned char *)&data, 1);
  }
#else
  // FIXME(E): Implement for Qt Embedded
#endif

  d->oldIceIOErrorHandler = IceSetIOErrorHandler( kde_ice_ioerrorhandler );
}

static int my_system (const char *command) {
   int pid, status;

   QApplication::flushX();
   pid = fork();
   if (pid == -1)
      return -1;
   if (pid == 0) {
      const char* shell = "/bin/sh";
      execl(shell, shell, "-c", command, (void *)0);
      ::exit(127);
   }
   do {
      if (waitpid(pid, &status, 0) == -1) {
         if (errno != EINTR)
            return -1;
       } else
            return status;
   } while(1);
}


DCOPClient *KApplication::dcopClient()
{
  if (s_DCOPClient)
    return s_DCOPClient;

  s_DCOPClient = new DCOPClient();
  KCmdLineArgs *args = KCmdLineArgs::parsedArgs("kde");
  if (args && args->isSet("dcopserver"))
  {
    s_DCOPClient->setServerAddress( args->getOption("dcopserver"));
  }
  if( kapp ) {
    connect(s_DCOPClient, SIGNAL(attachFailed(const QString &)),
            kapp, SLOT(dcopFailure(const QString &)));
    connect(s_DCOPClient, SIGNAL(blockUserInput(bool) ),
            kapp, SLOT(dcopBlockUserInput(bool)) );
  }
  else
    s_dcopClientNeedsPostInit = true;

  DCOPClient::setMainClient( s_DCOPClient );
  return s_DCOPClient;
}

void KApplication::dcopClientPostInit()
{
  if( s_dcopClientNeedsPostInit )
    {
    s_dcopClientNeedsPostInit = false;
    connect(s_DCOPClient, SIGNAL(blockUserInput(bool) ),
            SLOT(dcopBlockUserInput(bool)) );
    s_DCOPClient->bindToApp(); // Make sure we get events from the DCOPClient.
    }
}

void KApplication::dcopAutoRegistration()
{
  if (autoDcopRegistration)
     {
     ( void ) dcopClient();
     if( dcopClient()->appId().isEmpty())
         dcopClient()->registerAs(name());
     }
}

void KApplication::disableAutoDcopRegistration()
{
  autoDcopRegistration = false;
}

KConfig* KApplication::sessionConfig()
{
    if (pSessionConfig)
        return pSessionConfig;

    // create an instance specific config object
    pSessionConfig = new KConfig( sessionConfigName(), false, false);
    return pSessionConfig;
}

void KApplication::ref()
{
    d->refCount++;
    //kdDebug() << "KApplication::ref() : refCount = " << d->refCount << endl;
}

void KApplication::deref()
{
    d->refCount--;
    //kdDebug() << "KApplication::deref() : refCount = " << d->refCount << endl;
    if ( d->refCount <= 0 )
        quit();
}

KSessionManaged::KSessionManaged()
{
    sessionClients()->remove( this );
    sessionClients()->append( this );
}

KSessionManaged::~KSessionManaged()
{
    sessionClients()->remove( this );
}

bool KSessionManaged::saveState(QSessionManager&)
{
    return true;
}

bool KSessionManaged::commitData(QSessionManager&)
{
    return true;
}


void KApplication::disableSessionManagement() {
  bSessionManagement = false;
}

void KApplication::enableSessionManagement() {
  bSessionManagement = true;
  // Session management support in Qt/KDE is awfully broken.
  // If konqueror disables session management right after its startup,
  // and enables it later (preloading stuff), it won't be properly
  // saved on session shutdown.
  // I'm not actually sure why it doesn't work, but saveState()
  // doesn't seem to be called on session shutdown, possibly
  // because disabling session management after konqueror startup
  // disabled it somehow. Forcing saveState() here for this application
  // seems to fix it.
  if( mySmcConnection ) {
        SmcRequestSaveYourself( mySmcConnection, SmSaveLocal, False,
                SmInteractStyleAny,
                False, False );

    // flush the request
    IceFlush(SmcGetIceConnection(mySmcConnection));
  }
}


bool KApplication::requestShutDown(
    ShutdownConfirm confirm, ShutdownType sdtype, ShutdownMode sdmode )
{
#ifdef Q_WS_X11
    QApplication::syncX();
    /*  use ksmserver's dcop interface if necessary  */
    if ( confirm == ShutdownConfirmYes ||
         sdtype != ShutdownTypeDefault ||
         sdmode != ShutdownModeDefault )
    {
        QByteArray data;
        QDataStream arg(data, IO_WriteOnly);
        arg << (int)confirm << (int)sdtype << (int)sdmode;
    return dcopClient()->send( "ksmserver", "ksmserver",
                                   "logout(int,int,int)", data );
    }

    if ( mySmcConnection ) {
        // we already have a connection to the session manager, use it.
        SmcRequestSaveYourself( mySmcConnection, SmSaveBoth, True,
                SmInteractStyleAny,
                confirm == ShutdownConfirmNo, True );

    // flush the request
    IceFlush(SmcGetIceConnection(mySmcConnection));
        return true;
    }

    // open a temporary connection, if possible

    propagateSessionManager();
    QCString smEnv = ::getenv("SESSION_MANAGER");
    if (smEnv.isEmpty())
        return false;

    if (! tmpSmcConnection) {
    char cerror[256];
    char* myId = 0;
    char* prevId = 0;
    SmcCallbacks cb;
    tmpSmcConnection = SmcOpenConnection( 0, 0, 1, 0,
                          0, &cb,
                          prevId,
                          &myId,
                          255,
                          cerror );
    ::free( myId ); // it was allocated by C
    if (!tmpSmcConnection )
        return false;
    }

    SmcRequestSaveYourself( tmpSmcConnection, SmSaveBoth, True,
                SmInteractStyleAny, False, True );

    // flush the request
    IceFlush(SmcGetIceConnection(tmpSmcConnection));
    return true;
#else
    // FIXME(E): Implement for Qt Embedded
    return false;
#endif
}

void KApplication::propagateSessionManager()
{
    QCString fName = QFile::encodeName(locateLocal("socket", "KSMserver"));
    QCString display = ::getenv(DISPLAY);
    // strip the screen number from the display
    display.replace(QRegExp("\\.[0-9]+$"), "");
    int i;
    while( (i = display.find(':')) >= 0)
       display[i] = '_';

    fName += "_"+display;
    QCString smEnv = ::getenv("SESSION_MANAGER");
    bool check = smEnv.isEmpty();
    if ( !check && smModificationTime ) {
         QFileInfo info( fName );
         QTime current = info.lastModified().time();
         check = current > *smModificationTime;
    }
    if ( check ) {
        delete smModificationTime;
        QFile f( fName );
        if ( !f.open( IO_ReadOnly ) )
            return;
        QFileInfo info ( f );
        smModificationTime = new QTime( info.lastModified().time() );
        QTextStream t(&f);
        t.setEncoding( QTextStream::Latin1 );
        QString s = t.readLine();
        f.close();
        ::setenv( "SESSION_MANAGER", s.latin1(), true  );
    }
}

void KApplication::commitData( QSessionManager& sm )
{
    d->session_save = true;
    bool canceled = false;
    for (KSessionManaged* it = sessionClients()->first();
         it && !canceled;
         it = sessionClients()->next() ) {
        canceled = !it->commitData( sm );
    }
    if ( canceled )
        sm.cancel();

    if ( sm.allowsInteraction() ) {
        QWidgetList done;
        QWidgetList *list = QApplication::topLevelWidgets();
        bool canceled = false;
        QWidget* w = list->first();
        while ( !canceled && w ) {
            if ( !w->testWState( WState_ForceHide ) && !w->inherits("KMainWindow") ) {
                QCloseEvent e;
                sendEvent( w, &e );
                canceled = !e.isAccepted();
                if ( !canceled )
                    done.append( w );
                delete list; // one never knows...
                list = QApplication::topLevelWidgets();
                w = list->first();
            } else {
                w = list->next();
            }
            while ( w && done.containsRef( w ) )
                w = list->next();
        }
        delete list;
    }


    if ( !bSessionManagement )
        sm.setRestartHint( QSessionManager::RestartNever );
    else
    sm.setRestartHint( QSessionManager::RestartIfRunning );
    d->session_save = false;
}

void KApplication::saveState( QSessionManager& sm )
{
    d->session_save = true;
#ifndef Q_WS_QWS
    static bool firstTime = true;
    mySmcConnection = (SmcConn) sm.handle();

    if ( !bSessionManagement ) {
        sm.setRestartHint( QSessionManager::RestartNever );
    d->session_save = false;
        return;
    }
    else
        sm.setRestartHint( QSessionManager::RestartIfRunning );

#if QT_VERSION < 0x030100
    {
        // generate a new session key
        timeval tv;
        gettimeofday( &tv, 0 );
        d->sessionKey  = QString::number( tv.tv_sec ) + "_" + QString::number(tv.tv_usec);
    }
#endif

    if ( firstTime ) {
        firstTime = false;
    d->session_save = false;
        return; // no need to save the state.
    }

    // remove former session config if still existing, we want a new
    // and fresh one. Note that we do not delete the config file here,
    // this is done by the session manager when it executes the
    // discard commands. In fact it would be harmful to remove the
    // file here, as the session might be stored under a different
    // name, meaning the user still might need it eventually.
    if ( pSessionConfig ) {
        delete pSessionConfig;
        pSessionConfig = 0;
    }

    // tell the session manager about our new lifecycle
    QStringList restartCommand = sm.restartCommand();
#if QT_VERSION < 0x030100
    restartCommand.clear();
    restartCommand  << argv()[0] << "-session" << sm.sessionId() << "-smkey" << d->sessionKey;
    sm.setRestartCommand( restartCommand );
#endif


    QCString multiHead = getenv("KDE_MULTIHEAD");
    if (multiHead.lower() == "true") {
        // if multihead is enabled, we save our -display argument so that
        // we are restored onto the correct head... one problem with this
        // is that the display is hard coded, which means we cannot restore
        // to a different display (ie. if we are in a university lab and try,
        // try to restore a multihead session, our apps could be started on
        // someone else's display instead of our own)
        QCString displayname = getenv(DISPLAY);
        if (! displayname.isNull()) {
            // only store the command if we actually have a DISPLAY
            // environment variable
            restartCommand.append("-display");
            restartCommand.append(displayname);
        }
        sm.setRestartCommand( restartCommand );
    }


    // finally: do session management
    emit saveYourself(); // for compatibility
    bool canceled = false;
    for (KSessionManaged* it = sessionClients()->first();
         it && !canceled;
         it = sessionClients()->next() ) {
        canceled = !it->saveState( sm );
    }

    // if we created a new session config object, register a proper discard command
    if ( pSessionConfig ) {
        pSessionConfig->sync();
        QStringList discard;
        discard  << "rm" << locateLocal("config", sessionConfigName());
        sm.setDiscardCommand( discard );
    } else {
    sm.setDiscardCommand( "" );
    }

    if ( canceled )
        sm.cancel();
#else
    // FIXME(E): Implement for Qt Embedded
#endif
    d->session_save = false;
}

bool KApplication::sessionSaving() const
{
    return d->session_save;
}

void KApplication::startKdeinit()
{
  // Try to launch kdeinit.
  QString srv = KStandardDirs::findExe(QString::fromLatin1("kdeinit"));
  if (srv.isEmpty())
     srv = KStandardDirs::findExe(QString::fromLatin1("kdeinit"), KDEDIR+QString::fromLatin1("/bin"));
  if (srv.isEmpty())
     return;
  if (kapp && (Tty != kapp->type()))
    setOverrideCursor( Qt::waitCursor );
  my_system(QFile::encodeName(srv)+" --suicide");
  if (kapp && (Tty != kapp->type()))
    restoreOverrideCursor();
}

void KApplication::dcopFailure(const QString &msg)
{
  static int failureCount = 0;
  failureCount++;
  if (failureCount == 1)
  {
     startKdeinit();
     return;
  }
  if (failureCount == 2)
  {
     QString msgStr(i18n("There was an error setting up inter-process\n"
                      "communications for KDE. The message returned\n"
                      "by the system was:\n\n"));
     msgStr += msg;
     msgStr += i18n("\n\nPlease check that the \"dcopserver\" program is running!");

     if (Tty != kapp->type())
     {
       QMessageBox::critical
         (
           kapp->mainWidget(),
           i18n("DCOP communications error (%1)").arg(kapp->caption()),
           msgStr,
           i18n("OK")
         );
     }
     else
     {
       fprintf(stderr, "%s\n", msgStr.local8Bit().data());
     }

     return;
  }
}

static const KCmdLineOptions qt_options[] =
{
  //FIXME: Check if other options are specific to Qt/X11
#ifdef Q_WS_X11
   { "display <displayname>", I18N_NOOP("Use the X-server display 'displayname'."), 0},
#else
   { "display <displayname>", I18N_NOOP("Use the QWS display 'displayname'."), 0},
#endif
   { "session <sessionId>", I18N_NOOP("Restore the application for the given 'sessionId'."), 0},
   { "cmap", I18N_NOOP("Causes the application to install a private color\nmap on an 8-bit display."), 0},
   { "ncols <count>", I18N_NOOP("Limits the number of colors allocated in the color\ncube on an 8-bit display, if the application is\nusing the QApplication::ManyColor color\nspecification."), 0},
   { "nograb", I18N_NOOP("tells Qt to never grab the mouse or the keyboard."), 0},
   { "dograb", I18N_NOOP("running under a debugger can cause an implicit\n-nograb, use -dograb to override."), 0},
   { "sync", I18N_NOOP("switches to synchronous mode for debugging."), 0},
   { "fn", 0, 0},
   { "font <fontname>", I18N_NOOP("defines the application font."), 0},
   { "bg", 0, 0},
   { "background <color>", I18N_NOOP("sets the default background color and an\napplication palette (light and dark shades are\ncalculated)."), 0},
   { "fg", 0, 0},
   { "foreground <color>", I18N_NOOP("sets the default foreground color."), 0},
   { "btn", 0, 0},
   { "button <color>", I18N_NOOP("sets the default button color."), 0},
   { "name <name>", I18N_NOOP("sets the application name."), 0},
   { "title <title>", I18N_NOOP("sets the application title (caption)."), 0},
#ifdef Q_WS_X11
   { "visual TrueColor", I18N_NOOP("forces the application to use a TrueColor visual on\nan 8-bit display."), 0},
   { "inputstyle <inputstyle>", I18N_NOOP("sets XIM (X Input Method) input style. Possible\nvalues are onthespot, overthespot, offthespot and\nroot."), 0 },
   { "im <XIM server>", I18N_NOOP("set XIM server."),0},
   { "noxim", I18N_NOOP("disable XIM."), 0 },
#endif
#ifdef Q_WS_QWS
   { "qws", I18N_NOOP("forces the application to run as QWS Server."), 0},
#endif
   { "reverse", I18N_NOOP("mirrors the whole layout of widgets."), 0},
   KCmdLineLastOption
};

static const KCmdLineOptions kde_options[] =
{
   { "caption <caption>",       I18N_NOOP("Use 'caption' as name in the titlebar."), 0},
   { "icon <icon>",             I18N_NOOP("Use 'icon' as the application icon."), 0},
   { "miniicon <icon>",         I18N_NOOP("Use 'icon' as the icon in the titlebar."), 0},
   { "config <filename>",       I18N_NOOP("Use alternative configuration file."), 0},
   { "dcopserver <server>",     I18N_NOOP("Use the DCOP Server specified by 'server'."), 0},
   { "nocrashhandler",          I18N_NOOP("Disable crash handler, to get core dumps."), 0},
   { "waitforwm",          I18N_NOOP("Waits for a WM_NET compatible windowmanager."), 0},
   { "style <style>", I18N_NOOP("sets the application GUI style."), 0},
   { "geometry <geometry>", I18N_NOOP("sets the client geometry of the main widget."), 0},
#if QT_VERSION < 0x030100
   { "smkey <sessionKey>", I18N_NOOP("Define a 'sessionKey' for the session id. Only valid with -session"), 0},
#else
   { "smkey <sessionKey>", 0, 0}, // this option is obsolete and exists only to allow smooth upgrades from sessions
                                  // saved under Qt 3.0.x -- Qt 3.1.x includes the session key now automatically in
                  // the session id (Simon)
#endif
   KCmdLineLastOption
};

void
KApplication::addCmdLineOptions()
{
   KCmdLineArgs::addCmdLineOptions(qt_options, "Qt", "qt");
   KCmdLineArgs::addCmdLineOptions(kde_options, "KDE", "kde");
}

void KApplication::parseCommandLine( )
{
    KCmdLineArgs *args = KCmdLineArgs::parsedArgs("kde");

    if ( !args ) return;

    if (args->isSet("config"))
    {
        QString config = QString::fromLocal8Bit(args->getOption("config"));
        setConfigName(config);
    }

    if (args->isSet("style"))
    {

       QStringList styles = QStyleFactory::keys();
       QString reqStyle(args->getOption("style").lower());

       for (QStringList::ConstIterator it = styles.begin(); it != styles.end(); ++it)
           if ((*it).lower() == reqStyle)
           {
               d->overrideStyle = *it;
               break;
           }

       if (d->overrideStyle.isEmpty())
          fprintf(stderr, "%s", i18n("The style %1 was not found\n").arg(reqStyle).local8Bit().data());
    }

    if (args->isSet("caption"))
    {
       aCaption = QString::fromLocal8Bit(args->getOption("caption"));
    }

    if (args->isSet("miniicon"))
    {
       const char *tmp = args->getOption("miniicon");
       aMiniIconPixmap = SmallIcon(tmp);
       aMiniIconName = tmp;
    }

    if (args->isSet("icon"))
    {
       const char *tmp = args->getOption("icon");
       aIconPixmap = DesktopIcon( tmp );
       aIconName = tmp;
       if (aMiniIconPixmap.isNull())
       {
          aMiniIconPixmap = SmallIcon( tmp );
          aMiniIconName = tmp;
       }
    }

    bool nocrashhandler = (getenv("KDE_DEBUG") != NULL);
    if (!nocrashhandler && args->isSet("crashhandler"))
    {
        // set default crash handler / set emergency save function to nothing
        KCrash::setCrashHandler(KCrash::defaultCrashHandler);
        KCrash::setEmergencySaveFunction(NULL);

        KCrash::setApplicationName(QString(args->appName()));
    }

#ifdef Q_WS_X11
    if ( args->isSet( "waitforwm" ) ) {
        Atom type;
        (void) desktop(); // trigger desktop creation, we need PropertyNotify events for the root window
        int format;
        unsigned long length, after;
        unsigned char *data;
        while ( XGetWindowProperty( qt_xdisplay(), qt_xrootwin(), atom_NetSupported,
                    0, 1, false, AnyPropertyType, &type, &format,
                                    &length, &after, &data ) != Success || !length ) {
            if ( data )
                XFree( data );
            XEvent event;
            XWindowEvent( qt_xdisplay(), qt_xrootwin(), PropertyChangeMask, &event );
        }
        if ( data )
            XFree( data );
    }
#else
    // FIXME(E): Implement for Qt Embedded
#endif

    if (args->isSet("geometry"))
    {
        d->geometry_arg = args->getOption("geometry");
    }

    if (args->isSet("smkey"))
    {
        d->sessionKey = args->getOption("smkey");
    }

}

QString KApplication::geometryArgument() const
{
    return d->geometry_arg;
}

QPixmap KApplication::icon() const
{
  if( aIconPixmap.isNull()) {
      KApplication *that = const_cast<KApplication *>(this);
      that->aIconPixmap = DesktopIcon( instanceName() );
  }
  return aIconPixmap;
}

QString KApplication::iconName() const
{
  return aIconName.isNull() ? (QString)instanceName() : aIconName;
}

QPixmap KApplication::miniIcon() const
{
  if (aMiniIconPixmap.isNull()) {
      KApplication *that = const_cast<KApplication *>(this);
      that->aMiniIconPixmap = SmallIcon( instanceName() );
  }
  return aMiniIconPixmap;
}

QString KApplication::miniIconName() const
{
  return aMiniIconName.isNull() ? (QString)instanceName() : aMiniIconName;
}

extern void kDebugCleanup();

KApplication::~KApplication()
{
  delete d->m_KAppDCOPInterface;

  // First call the static deleters and then call KLibLoader::cleanup()
  // The static deleters may delete libraries for whi