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/*
This file is part of the KDE libraries
Copyright (c) 2009 Till Adam <adam@kde.org>
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., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "ktimezoned_win.moc"
#include "ktimezonedbase.moc"
#include <climits>
#include <cstdlib>
#include <QStringList>
#include <QTextStream>
#include <QtDBus/QtDBus>
#include <QThread>
#include <QDebug>
#include <kglobal.h>
#include <klocale.h>
#include <kcodecs.h>
#include <kdebug.h>
#include <kconfiggroup.h>
#include <kpluginfactory.h>
#include <kpluginloader.h>
#ifdef Q_OS_WIN
#include <Windows.h>
#endif
K_PLUGIN_FACTORY_WITH_JSON(KTimeZonedFactory,
"ktimezoned.json",
registerPlugin<KTimeZoned>();
)
// Config file entry names
const char LOCAL_ZONE[] = "LocalZone"; // name of local time zone
static const TCHAR currentTimeZoneKey[] = TEXT("System\\CurrentControlSet\\Control\\TimeZoneInformation");
class RegistryWatcherThread : public QThread
{
public:
RegistryWatcherThread(KTimeZoned* parent)
:QThread(parent),q(parent)
{
}
~RegistryWatcherThread()
{
RegCloseKey(key);
}
void run()
{
//FIXME: the timezonechange needs to be handled diffrently
#ifndef _WIN32
if ( RegOpenKeyEx( HKEY_LOCAL_MACHINE, currentTimeZoneKey, 0, KEY_READ, &key ) == ERROR_SUCCESS )
{
while(true)
{
RegNotifyChangeKeyValue( key, true, REG_NOTIFY_CHANGE_LAST_SET,
NULL, false /*async, we want it to block*/ );
q->updateLocalZone();
}
}
#endif
}
private:
KTimeZoned* q;
HKEY key;
};
KTimeZoned::KTimeZoned(QObject* parent, const QList<QVariant>& l)
: KTimeZonedBase(parent, l), mRegistryWatcherThread(0)
{
init(false);
}
KTimeZoned::~KTimeZoned()
{
if (mRegistryWatcherThread)
{
mRegistryWatcherThread->quit();
mRegistryWatcherThread->wait(100);
}
delete mRegistryWatcherThread;
}
void KTimeZoned::init(bool restart)
{
if (restart)
{
qDebug() << "KTimeZoned::init(restart)";
delete mRegistryWatcherThread;
mRegistryWatcherThread = 0;
}
KConfig config(QLatin1String("ktimezonedrc"));
if (restart)
config.reparseConfiguration();
KConfigGroup group(&config, "TimeZones");
mConfigLocalZone = group.readEntry(LOCAL_ZONE);
updateLocalZone();
if (!mRegistryWatcherThread)
{
mRegistryWatcherThread = new RegistryWatcherThread(this);
mRegistryWatcherThread->start();
}
}
// Check if the local zone has been updated, and if so, write the new
// zone to the config file and notify interested parties.
void KTimeZoned::updateLocalZone()
{
// On Windows, HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones
// holds the time zone database. The TZI binary value is the TIME_ZONE_INFORMATION structure.
TIME_ZONE_INFORMATION tzinfo;
DWORD res = GetTimeZoneInformation(&tzinfo);
if (res == TIME_ZONE_ID_INVALID) return; // hm
mLocalZone = QString::fromUtf16( reinterpret_cast<ushort*>( tzinfo.StandardName ) );
if (mConfigLocalZone != mLocalZone)
{
qDebug() << "Local timezone is now: " << mLocalZone;
KConfig config(QLatin1String("ktimezonedrc"));
KConfigGroup group(&config, "TimeZones");
mConfigLocalZone = mLocalZone;
group.writeEntry(LOCAL_ZONE, mConfigLocalZone);
group.sync();
QDBusMessage message = QDBusMessage::createSignal("/Daemon", "org.kde.KTimeZoned", "timeZoneChanged");
QDBusConnection::sessionBus().send(message);
}
}
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