workspace/plasma/dataengines/time/timeengine.cpp

   1 /*
   2  *   Copyright 2007 Aaron Seigo <aseigo@kde.org>
   3  *   Copyright 2008 Alex Merry <alex.merry@kdemail.net>
   4  *
   5  *   This program is free software; you can redistribute it and/or modify
   6  *   it under the terms of the GNU Library General Public License as
   7  *   published by the Free Software Foundation; either version 2 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 Library General Public
  16  *   License along with this program; if not, write to the
  17  *   Free Software Foundation, Inc.,
  18  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  19  */
  20
  21 #include "timeengine.h"
  22
  23 #include <QDate>
  24 #include <QDBusConnection>
  25 #include <QStringList>
  26 #include <QTime>
  27
  28 #include <KLocale>
  29 #include <KSystemTimeZones>
  30 #include <KDateTime>
  31
  32 //timezone is defined in msvc
  33 #ifdef timezone
  34 #undef timezone
  35 #endif
  36
  37 TimeEngine::TimeEngine(QObject *parent, const QVariantList &args)
  38     : Plasma::DataEngine(parent, args)
  39 {
  40     Q_UNUSED(args)
  41     setMinimumPollingInterval(333);
  42
  43     // To have translated timezone names
  44     // (effectively a noop if the catalog is already present).
  45     KGlobal::locale()->insertCatalog("timezones4");
  46 }
  47
  48 void TimeEngine::init()
  49 {
  50     //QDBusInterface *ktimezoned = new QDBusInterface("org.kde.kded", "/modules/ktimezoned", "org.kde.KTimeZoned");
  51     QDBusConnection dbus = QDBusConnection::sessionBus();
  52     dbus.connect(QString(), QString(), "org.kde.KTimeZoned", "configChanged", this, SLOT(updateAllSources()));
  53 }
  54
  55 QStringList TimeEngine::sources() const
  56 {
  57     QStringList timezones(KSystemTimeZones::zones().keys());
  58     timezones << "Local";
  59     return timezones;
  60 }
  61
  62 bool TimeEngine::sourceRequestEvent(const QString &name)
  63 {
  64     return updateSourceEvent(name);
  65 }
  66
  67 bool TimeEngine::updateSourceEvent(const QString &tz)
  68 {
  69     QString timezone;
  70
  71     static const QString localName = I18N_NOOP("Local");
  72     if (tz == localName) {
  73         setData(localName, I18N_NOOP("Time"), QTime::currentTime());
  74         setData(localName, I18N_NOOP("Date"), QDate::currentDate());
  75         // this is relatively cheap - KSTZ::local() is cached
  76         timezone = KSystemTimeZones::local().name();
  77     } else {
  78         KTimeZone newTz = KSystemTimeZones::zone(tz);
  79         if (!newTz.isValid()) {
  80             return false;
  81         }
  82
  83         KDateTime dt = KDateTime::currentDateTime(newTz);
  84         setData(tz, I18N_NOOP("Time"), dt.time());
  85         setData(tz, I18N_NOOP("Date"), dt.date());
  86         timezone = tz;
  87     }
  88
  89     QString trTimezone = i18n(timezone.toUtf8());
  90     setData(tz, I18N_NOOP("Timezone"), trTimezone);
  91     QStringList tzParts = trTimezone.split("/");
  92
  93     setData(tz, I18N_NOOP("Timezone Continent"), tzParts.value(0));
  94     setData(tz, I18N_NOOP("Timezone City"), tzParts.value(1));
  95
  96     return true;
  97 }
  98
  99
 100 K_EXPORT_PLASMA_DATAENGINE(time, TimeEngine)
 101
 102 #include "timeengine.moc"