kmail/main.cpp

   1 /* -*- mode: C++; c-file-style: "gnu" -*-
   2  * kmail: KDE mail client
   3  * Copyright (c) 1996-1998 Stefan Taferner <taferner@kde.org>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  *
  19  */
  20
  21 #include <kontactinterface/pimuniqueapplication.h>
  22 #include <kglobal.h>
  23 #include "kmkernel.h" //control center
  24 #include "kmmainwidget.h"
  25 #include "kmail_options.h"
  26
  27 #include <kdebug.h>
  28 #include <kmessagebox.h>
  29 #undef Status // stupid X headers
  30
  31 #include "aboutdata.h"
  32
  33 #include "kmstartup.h"
  34
  35 #ifdef Q_WS_WIN
  36 #include <unistd.h>
  37 #include <windows.h>
  38 #endif
  39
  40 //-----------------------------------------------------------------------------
  41
  42 class KMailApplication : public KontactInterface::PimUniqueApplication
  43 {
  44 public:
  45   KMailApplication() : KontactInterface::PimUniqueApplication(),
  46                        mDelayedInstanceCreation( false ),
  47                        mEventLoopReached( false ) { }
  48   virtual int newInstance();
  49   void commitData(QSessionManager& sm);
  50   void setEventLoopReached();
  51   void delayedInstanceCreation();
  52 protected:
  53   bool mDelayedInstanceCreation;
  54   bool mEventLoopReached;
  55
  56 };
  57
  58 void KMailApplication::commitData(QSessionManager& sm) {
  59   kmkernel->dumpDeadLetters();
  60   kmkernel->setShuttingDown( true ); // Prevent further dumpDeadLetters calls
  61   KApplication::commitData( sm );
  62 }
  63
  64 void KMailApplication::setEventLoopReached() {
  65   mEventLoopReached = true;
  66 }
  67
  68 int KMailApplication::newInstance()
  69 {
  70   kDebug();
  71
  72   // If the event loop hasn't been reached yet, the kernel is probably not
  73   // fully initialized. Creating an instance would therefore fail, this is why
  74   // that is delayed until delayedInstanceCreation() is called.
  75   if ( !mEventLoopReached ) {
  76     kDebug() << "Delaying instance creation.";
  77     mDelayedInstanceCreation = true;
  78     return 0;
  79   }
  80
  81   if (!kmkernel)
  82      return 0;
  83
  84   if (!kmkernel->firstInstance() || !kapp->isSessionRestored())
  85     kmkernel->handleCommandLine( true );
  86   kmkernel->setFirstInstance(false);
  87   return 0;
  88 }
  89
  90 void KMailApplication::delayedInstanceCreation() {
  91   if ( mDelayedInstanceCreation )
  92     newInstance();
  93 }
  94
  95 int main(int argc, char *argv[])
  96 {
  97   // WABA: KMail is a KUniqueApplication. Unfortunately this makes debugging
  98   // a bit harder: You should pass --nofork as commandline argument when using
  99   // a debugger. In gdb you can do this by typing "set args --nofork" before
 100   // typing "run".
 101 #if 0 // for testing KUniqueAppliaction on Windows
 102   MessageBoxA(NULL,
 103              QString("main() %1 pid=%2").arg(argv[0]).arg(getpid()).toLatin1(),
 104              QString("main() \"%1\"").arg(argv[0]).toLatin1(), MB_OK|MB_ICONINFORMATION|MB_TASKMODAL);
 105 #endif
 106   KMail::AboutData about;
 107
 108   KCmdLineArgs::init(argc, argv, &about);
 109   KCmdLineArgs::addCmdLineOptions( kmail_options() ); // Add kmail options
 110   if (!KMailApplication::start())
 111      return 0;
 112
 113   KMailApplication app;
 114
 115   // Qt doesn't treat the system tray as a window, and therefore Qt would quit
 116   // the event loop when an error message is clicked away while KMail is in the
 117   // tray.
 118   // Rely on KGlobal::ref() and KGlobal::deref() instead, like we did in KDE3.
 119   // See http://bugs.kde.org/show_bug.cgi?id=163479
 120   QApplication::setQuitOnLastWindowClosed( false );
 121
 122   // import i18n data and icons from libraries:
 123   KMail::insertLibraryCataloguesAndIcons();
 124
 125   KMail::lockOrDie();
 126
 127   //local, do the init
 128   KMKernel kmailKernel;
 129   kmailKernel.init();
 130
 131   // and session management
 132   kmailKernel.doSessionManagement();
 133
 134   // any dead letters?
 135   kmailKernel.recoverDeadLetters();
 136
 137   kmkernel->setupDBus(); // Ok. We are ready for D-Bus requests.
 138   kmkernel->setStartingUp( false ); // Starting up is finished
 139
 140   //If the instance hasn't been created yet, do that now
 141   app.setEventLoopReached();
 142   app.delayedInstanceCreation();
 143
 144   // Go!
 145   int ret = qApp->exec();
 146   // clean up
 147   kmailKernel.cleanup();
 148   KMail::cleanup(); // pid file (see kmstartup.cpp)
 149   return ret;
 150 }