kmail/main.cpp

   1 /*
   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
  23 #include "kmkernel.h" //control center
  24 #include "kmmainwidget.h"
  25 #include "kmail_options.h"
  26 #include "kmmigrateapplication.h"
  27
  28 #include "kmail_debug.h"
  29 #include <kmessagebox.h>
  30 #undef Status // stupid X headers
  31
  32 #include "aboutdata.h"
  33
  34 #include "kmstartup.h"
  35
  36 #ifdef Q_OS_WIN
  37 #include <unistd.h>
  38 #include <windows.h>
  39 #endif
  40
  41 #include <QDir>
  42 #include <QApplication>
  43 #include <QSessionManager>
  44
  45 //-----------------------------------------------------------------------------
  46
  47 class KMailApplication : public KontactInterface::PimUniqueApplication
  48 {
  49 public:
  50     KMailApplication(int &argc, char **argv[])
  51         : KontactInterface::PimUniqueApplication(argc, argv)
  52         , mDelayedInstanceCreation(false)
  53         , mEventLoopReached(false)
  54     { }
  55
  56     int activate(const QStringList &args) Q_DECL_OVERRIDE;
  57     void commitData(QSessionManager &sm);
  58     void setEventLoopReached();
  59     void delayedInstanceCreation(const QStringList &args);
  60 protected:
  61     bool mDelayedInstanceCreation;
  62     bool mEventLoopReached;
  63
  64 };
  65
  66 void KMailApplication::commitData(QSessionManager &sm)
  67 {
  68     kmkernel->dumpDeadLetters();
  69     kmkernel->setShuttingDown(true);   // Prevent further dumpDeadLetters calls
  70 #warning KF5 PORTME
  71     //KApplication::commitData(sm)
  72 }
  73
  74 void KMailApplication::setEventLoopReached()
  75 {
  76     mEventLoopReached = true;
  77 }
  78
  79 int KMailApplication::activate(const QStringList &args)
  80 {
  81     qCDebug(KMAIL_LOG);
  82
  83     // If the event loop hasn't been reached yet, the kernel is probably not
  84     // fully initialized. Creating an instance would therefore fail, this is why
  85     // that is delayed until delayedInstanceCreation() is called.
  86     if (!mEventLoopReached) {
  87         qCDebug(KMAIL_LOG) << "Delaying instance creation.";
  88         mDelayedInstanceCreation = true;
  89         return 0;
  90     }
  91
  92     if (!kmkernel) {
  93         return 0;
  94     }
  95
  96     if (!kmkernel->firstInstance() || !qApp->isSessionRestored()) {
  97         kmkernel->handleCommandLine(true, args);
  98     }
  99     kmkernel->setFirstInstance(false);
 100     return 0;
 101 }
 102
 103 void KMailApplication::delayedInstanceCreation(const QStringList &args)
 104 {
 105     if (mDelayedInstanceCreation) {
 106         activate(args);
 107     }
 108 }
 109
 110 int main(int argc, char *argv[])
 111 {
 112     KMailApplication app(argc, &argv);
 113     // WABA: KMail is a KUniqueApplication. Unfortunately this makes debugging
 114     // a bit harder: You should pass --nofork as commandline argument when using
 115     // a debugger. In gdb you can do this by typing "set args --nofork" before
 116     // typing "run".
 117 #if 0 // for testing KUniqueAppliaction on Windows
 118     MessageBoxA(NULL,
 119                 QString("main() %1 pid=%2").arg(argv[0]).arg(getpid()).toLatin1(),
 120                 QString("main() \"%1\"").arg(argv[0]).toLatin1(), MB_OK | MB_ICONINFORMATION | MB_TASKMODAL);
 121 #endif
 122     KMail::AboutData about;
 123     app.setAboutData(about);
 124
 125     QCommandLineParser *cmdArgs = app.cmdArgs();
 126     kmail_options(cmdArgs);
 127
 128     const QStringList args = QApplication::arguments();
 129     cmdArgs->process(args);
 130     about.processCommandLine(cmdArgs);
 131
 132     if (!KMailApplication::start(args)) {
 133         qCDebug(KMAIL_LOG) << "Another instance of KMail already running";
 134         return 0;
 135     }
 136
 137     KMMigrateApplication migrate;
 138     migrate.migrate();
 139
 140
 141     // import i18n data and icons from libraries:
 142     KMail::insertLibraryCataloguesAndIcons();
 143
 144     //local, do the init
 145     KMKernel kmailKernel;
 146     kmailKernel.init();
 147
 148     // and session management
 149     kmailKernel.doSessionManagement();
 150
 151     // any dead letters?
 152     kmailKernel.recoverDeadLetters();
 153
 154     kmkernel->setupDBus(); // Ok. We are ready for D-Bus requests.
 155
 156     //If the instance hasn't been created yet, do that now
 157     app.setEventLoopReached();
 158     app.delayedInstanceCreation(args);
 159
 160     // Go!
 161     int ret = qApp->exec();
 162     // clean up
 163     kmailKernel.cleanup();
 164     return ret;
 165 }