When selecting a time zone, warn the user if the time zone file in /usr/share/zoneinfo for the selected time zone is missing

1 files changed, 35 insertions, 26 deletions

diff --git a/noncore/settings/netsystemtime/timetabwidget.cpp b/noncore/settings/netsystemtime/timetabwidget.cpp
index bcfbdf7..895514b 100644
--- a/noncore/settings/netsystemtime/timetabwidget.cpp
+++ b/noncore/settings/netsystemtime/timetabwidget.cpp
@@ -1,309 +1,318 @@
 /*
                              This file is part of the Opie Project
 
                              Copyright (C) Opie Team <opie-devel@handhelds.org>
               =.
             .=l.
            .>+-=
  _;:,     .>    :=|.         This program is free software; you can
 .> <`_,   >  .   <=          redistribute it and/or  modify it under
 :`=1 )Y*s>-.--   :           the terms of the GNU Library General Public
 .="- .-=="i,     .._         License as published by the Free Software
  - .   .-<_>     .<>         Foundation; either version 2 of the License,
      ._= =}       :          or (at your option) any later version.
     .%`+i>       _;_.
     .i_,=:_.      -<s.       This program 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.
 */
 
 #include "timetabwidget.h"
 
 #include <opie2/oresource.h>
 
 #include <qpe/applnk.h>
 #include <qpe/config.h>
 #include <qpe/datebookmonth.h>
 #include <qpe/global.h>
 #include <qpe/tzselect.h>
 
 #if ( defined Q_WS_QWS || defined(_WS_QWS_) ) && !defined(QT_NO_COP)
 #include <qpe/qcopenvelope_qws.h>
 #endif
 
 #include <qcombobox.h>
 #include <qdatetime.h>
 #include <qframe.h>
 #include <qlabel.h>
 #include <qlayout.h>
 #include <qpushbutton.h>
 #include <qscrollview.h>
 #include <qspinbox.h>
+#include <qmessagebox.h>
+#include <qfile.h>
 
 #include <stdlib.h>
 #include <sys/time.h>
 
 static const int ValueAM = 0;
 static const int ValuePM = 1;
 
 TimeTabWidget::TimeTabWidget( QWidget *parent )
         : QWidget( parent, 0x0, 0 )
 {
         // Synchronize HW clock to systemtime
         // This app will update systemtime
         //  - if Cancel is clicked, will reset systemtime to HW clock's time
         //  - if Ok is clicked, will leave systemtime as is
         system("/sbin/hwclock --systohc --utc");
 
         QVBoxLayout *tmpvb = new QVBoxLayout( this );
         QScrollView *sv = new QScrollView( this );
         tmpvb->addWidget( sv, 0, 0 );
         sv->setResizePolicy( QScrollView::AutoOneFit );
         sv->setFrameStyle( QFrame::NoFrame );
         QWidget *container = new QWidget( sv->viewport() );
         sv->addChild( container );
 
         QGridLayout *layout = new QGridLayout( container );
         layout->setMargin( 2 );
         layout->setSpacing( 4 );
 
         // Hours
         layout->addMultiCellWidget( new QLabel( tr( "Hour" ), container ), 1, 1, 0, 1 );
         sbHour = new QSpinBox( container );
         sbHour->setWrapping( TRUE );
         layout->addMultiCellWidget( sbHour, 2, 2, 0, 1 );
 
         // Minutes
         layout->addMultiCellWidget( new QLabel( tr( "Minute" ), container ), 1, 1, 2, 3 );
         sbMin = new QSpinBox( container );
         sbMin->setWrapping( TRUE );
         sbMin->setMinValue( 0 );
         sbMin->setMaxValue( 59 );
         layout->addMultiCellWidget( sbMin, 2, 2, 2, 3 );
 
         // AM/PM
         cbAmpm = new QComboBox( container );
         cbAmpm->insertItem( tr( "AM" ), ValueAM );
         cbAmpm->insertItem( tr( "PM" ), ValuePM );
         layout->addMultiCellWidget( cbAmpm, 2, 2, 4, 5 );
 
         // Date
         layout->addWidget( new QLabel( tr( "Date" ), container ), 4, 0 );
         btnDate = new DateButton( TRUE, container );
         layout->addMultiCellWidget( btnDate, 4, 4, 1, 5 );
 
         // Timezone
         layout->addMultiCellWidget( new QLabel( tr( "Time zone" ), container ), 6, 6, 0, 1 );
         selTimeZone = new TimeZoneSelector( container );
         connect( selTimeZone, SIGNAL(signalNewTz(const QString&)), this, SLOT(slotTZChanged(const QString&)) );
         layout->addMultiCellWidget( selTimeZone, 6, 6, 2, 5 );
 
         // Space filler
         layout->addItem( new QSpacerItem( 1, 1, QSizePolicy::Minimum, QSizePolicy::Expanding ), 7, 0 );
 
         // Set NTP time button
     m_ntpBtn = new QPushButton( Opie::Core::OResource::loadPixmap( "netsystemtime/ntptab", Opie::Core::OResource::SmallIcon ),
                                 tr( "Get time from the network" ), container );
     m_ntpBtn->setMinimumHeight( AppLnk::smallIconSize()+4 );
         connect( m_ntpBtn, SIGNAL(clicked()), this, SIGNAL(getNTPTime()) );
         layout->addMultiCellWidget( m_ntpBtn, 8, 8, 0, 5 );
 
         // Set predicted time button
         QPushButton *pb = new QPushButton( Opie::Core::OResource::loadPixmap( "netsystemtime/predicttab", Opie::Core::OResource::SmallIcon ),
                                        tr( "Set predicted time" ), container );
     pb->setMinimumHeight( AppLnk::smallIconSize()+4 );
         connect( pb, SIGNAL(clicked()), this, SIGNAL(getPredictedTime()) );
         layout->addMultiCellWidget( pb, 9, 9, 0, 5 );
 
         // Space filler at bottom of widget
         layout->addItem( new QSpacerItem( 1, 1, QSizePolicy::Minimum, QSizePolicy::Expanding ), 10, 0 );
 
         // Initialize values
         Config config( "locale" );
         config.setGroup( "Location" );
         selTimeZone->setCurrentZone( config.readEntry( "Timezone", "America/New_York" ) );
         use12HourTime = FALSE;
         setDateTime( QDateTime::currentDateTime() );
 }
 
 TimeTabWidget::~TimeTabWidget()
 {
 }
 
 void TimeTabWidget::saveSettings( bool commit )
 {
         if ( commit )
         {
                 // Set timezone and announce to world
                 QString tz = selTimeZone->currentZone();
                 Config config("locale");
                 config.setGroup( "Location" );
                 config.writeEntry( "Timezone", tz );
                 setenv( "TZ", tz, 1 );
                 QCopEnvelope setTimeZone( "QPE/System", "timeChange(QString)" );
                 setTimeZone << tz;
 
                 // If controls have a valid date & time, update systemtime
                 int hour = sbHour->value();
                 if ( use12HourTime && cbAmpm->currentItem() == ValuePM )
                         hour += 12;
                 QDateTime dt( btnDate->date(), QTime ( hour, sbMin->value(), QTime::currentTime().second() ) );
                 setSystemTime( dt );
         }
         else
         {
                 // Reset systemtime to hardware clock (i.e. undo any changes made by this app)
                 system("/sbin/hwclock --hctosys --utc");
         }
 }
 
 void TimeTabWidget::setDateTime( const QDateTime &dt )
 {
         // Set time
         QTime t = dt.time();
         if( use12HourTime )
         {
                 int show_hour = t.hour();
                 if ( t.hour() >= 12 )
                 {
                         show_hour -= 12;
                         cbAmpm->setCurrentItem( ValuePM );
                 }
                 else
                 {
                         cbAmpm->setCurrentItem( ValueAM );
                 }
                 if ( show_hour == 0 )
                         show_hour = 12;
                 sbHour->setValue( show_hour );
         }
         else
         {
                 sbHour->setValue( t.hour() );
         }
         sbMin->setValue( t.minute() );
 
         // Set date
         btnDate->setDate( dt.date() );
 }
 
 void TimeTabWidget::setNTPBtnEnabled( bool enabled )
 {
     m_ntpBtn->setEnabled( enabled );
 }
 
 void TimeTabWidget::setSystemTime( const QDateTime &dt )
 {
         // Set system clock
         if ( dt.isValid() )
         {
                 struct timeval myTv;
                 int t = TimeConversion::toUTC( dt );
                         myTv.tv_sec = t;
                 myTv.tv_usec = 0;
 
                 if ( myTv.tv_sec != -1 )
                     ::settimeofday( &myTv, 0 );
 
                 /*
                  * Commit the datetime to the  'hardware'
                  * as Global::writeHWClock() is a NOOP with Opie Alarm
                  */
                 system("/sbin/hwclock --systohc --utc");
         }
 }
 
 void TimeTabWidget::slotUse12HourTime( int i )
 {
         use12HourTime = (i == 1);
 
         cbAmpm->setEnabled( use12HourTime );
 
         int show_hour = sbHour->value();
 
         if ( use12HourTime )
         {
                 sbHour->setMinValue( 1 );
                 sbHour->setMaxValue( 12 );
 
                 if ( show_hour >= 12 )
                 {
                         show_hour -= 12;
                         cbAmpm->setCurrentItem( ValuePM );
                 }
                 else
                 {
                         cbAmpm->setCurrentItem( ValueAM );
                 }
                 if ( show_hour == 0 )
                         show_hour = 12;
         }
         else
         {
                 sbHour->setMinValue( 0 );
                 sbHour->setMaxValue( 23 );
 
                 if ( cbAmpm->currentItem() == ValuePM )
                 {
                         show_hour += 12;
                         if ( show_hour == 24 )
                                 show_hour = 0;
                 }
         }
 
         sbHour->setValue( show_hour );
 }
 
 void TimeTabWidget::slotDateFormatChanged( const DateFormat &df )
 {
         btnDate->setDateFormat( df );
 }
 
 void TimeTabWidget::slotWeekStartChanged( int monday )
 {
         btnDate->setWeekStartsMonday( monday );
 }
 
 void TimeTabWidget::slotTZChanged( const QString &newtz )
 {
-        // If controls have a valid date & time, update systemtime
-        int hour = sbHour->value();
-        if ( use12HourTime && cbAmpm->currentItem() == ValuePM )
-                hour += 12;
-        QDateTime dt( btnDate->date(), QTime ( hour, sbMin->value(), QTime::currentTime().second() ) );
-        setSystemTime( dt );
-        QCopEnvelope setTimeZone( "QPE/System", "timeChange(QString)" );
-        setTimeZone << newtz;
-
-        // Set system timezone
-        QString currtz = getenv( "TZ" );
-        setenv( "TZ", newtz, 1 );
-
-        // Get new date/time
-        hour = sbHour->value();
-        if ( use12HourTime && cbAmpm->currentItem() == ValuePM )
-                hour += 12;
-        dt = QDateTime::currentDateTime();
-
-        // Reset system timezone
-        if ( !currtz.isNull() )
-        {
-                setenv( "TZ", currtz, 1 );
+        // Check timezone has a valid file in /usr/share/zoneinfo
+        if(!QFile::exists("/usr/share/zoneinfo/" + newtz)) {
+                QMessageBox::warning(this, tr("Time zone file missing"), 
+                                (tr("There is no time zone file for the\nselected time zone (%1).\nYou will need to install it before the\nsystem time zone can be set correctly.")).arg(newtz));
         }
+        else {
+                // If controls have a valid date & time, update systemtime
+                int hour = sbHour->value();
+                if ( use12HourTime && cbAmpm->currentItem() == ValuePM )
+                        hour += 12;
+                QDateTime dt( btnDate->date(), QTime ( hour, sbMin->value(), QTime::currentTime().second() ) );
+                setSystemTime( dt );
+                QCopEnvelope setTimeZone( "QPE/System", "timeChange(QString)" );
+                setTimeZone << newtz;
 
-        // Set controls to new time
-        setDateTime( dt );
+                // Set system timezone
+                QString currtz = getenv( "TZ" );
+                setenv( "TZ", newtz, 1 );
 
-        emit tzChanged( newtz );
+                // Get new date/time
+                hour = sbHour->value();
+                if ( use12HourTime && cbAmpm->currentItem() == ValuePM )
+                        hour += 12;
+                dt = QDateTime::currentDateTime();
+
+                // Reset system timezone
+                if ( !currtz.isNull() )
+                {
+                        setenv( "TZ", currtz, 1 );
+                }
+
+                // Set controls to new time
+                setDateTime( dt );
+
+                emit tzChanged( newtz );
+        }
 }