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/*
    This file is part of KOrganizer.

    Copyright (c) 2003,2004 Cornelius Schumacher <schumacher@kde.org>
    Copyright (C) 2004 Reinhold Kainhofer <reinhold@kainhofer.com>

    Copyright (C) 2010 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.net>
    Author: Sergio Martins, <sergio.martins@kdab.com>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    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 General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

    As a special exception, permission is given to link this program
    with any edition of TQt, and distribute the resulting executable,
    without including the source code for TQt in the source distribution.
*/

#include "previewdialog.h"

#include "kolistview.h"
#include "koprefs.h"
#include "stdcalendar.h"

#include <tdelocale.h>

#include <libkcal/calendarlocal.h>

#include <kstandarddirs.h>
#include <tdefiledialog.h>
#include <tdemessagebox.h>
#include <tdeio/netaccess.h>

#include <tqlabel.h>
#include <tqlayout.h>
#include <tqradiobutton.h>
#include <tqpushbutton.h>
#include <tqdialog.h>

using namespace KCal;

PreviewDialog::PreviewDialog( const KURL &url, TQWidget *parent )
  : KDialogBase( Plain, i18n("Import Calendar/Event"), User1 | User2 | Cancel, User1, parent,
                 0, true, true, KGuiItem( i18n("&Merge into existing calendar"), "merge" ) ),
    mOriginalUrl( url )
{
  TQFrame *topFrame = plainPage();
  TQVBoxLayout *topLayout = new TQVBoxLayout( topFrame, 0, spacingHint() );

  mCalendar = new CalendarLocal( KOPrefs::instance()->mTimeZoneId );
  mListView = new KOListView( mCalendar, topFrame, "PreviewDialog::ListView", true );
  topLayout->addWidget( mListView );

  topLayout->setSpacing( spacingHint() );
  topLayout->setMargin( marginHint() );

  connect( this, TQ_SIGNAL(user1Clicked()), TQ_SLOT(slotMerge()) );
  connect( this, TQ_SIGNAL(user2Clicked()), TQ_SLOT(slotAdd()) );

  // when someone edits a kmail attachment he's editing a tmp file, check for that
  // and if it's a tmp file then open a save dialog
  if ( isTempFile() ) {
    setButtonGuiItem( User2, KGuiItem( i18n("&Add as new calendar..."), "add" ) );
  } else {
    setButtonGuiItem( User2, KGuiItem( i18n("&Add as new calendar"), "add" ) );
  }

  mLocalUrl = 0;
}

PreviewDialog::~PreviewDialog()
{
  if ( mLocalUrl && !mOriginalUrl.isLocalFile() ) {
    TDEIO::NetAccess::removeTempFile( mLocalUrl->path() );
    delete mLocalUrl;
  }

  delete mCalendar;
}

bool PreviewDialog::loadCalendar()
{
  // If it's a remote file, download it so we can give it to CalendarLocal
  if ( !mOriginalUrl.isLocalFile() ) {
    if ( mLocalUrl ) {
      // loadCalendar already called.. remove old one.
      TDEIO::NetAccess::removeTempFile( mLocalUrl->path() );
      delete mLocalUrl;
    }

    TQString tmpFile;
    if ( TDEIO::NetAccess::download( mOriginalUrl, tmpFile, 0 ) ) {
      mLocalUrl = new KURL( tmpFile );
    } else {
      mLocalUrl = 0;
    }
  } else {
    mLocalUrl = &mOriginalUrl;
  }

  if ( mLocalUrl ) {
    const bool success = mCalendar->load( mLocalUrl->path() );

    if ( !success && !mOriginalUrl.isLocalFile() ) {
      TDEIO::NetAccess::removeTempFile( mLocalUrl->path() );
    } else {
      mListView->showAll();
    }
    return success;
  } else {
    return false;
  }
}

void PreviewDialog::slotMerge()
{
  if ( mLocalUrl ) {
    emit openURL( *mLocalUrl, true );
    emit dialogFinished( this );
    accept();
  }
}

void PreviewDialog::slotAdd()
{
  KURL finalUrl = mOriginalUrl;
  if ( isTempFile() ) {
    const TQString fileName =
      KFileDialog::getSaveFileName( locateLocal( "data","korganizer/" ),
                                    i18n( "*.vcs *.ics|Calendar Files" ),
                                    this, i18n( "Select path for new calendar" ) );

    finalUrl = KURL( fileName );

    if ( !TDEIO::NetAccess::copy( mOriginalUrl, finalUrl, this ) && TDEIO::NetAccess::lastError() ) {
      KMessageBox::error( this, TDEIO::NetAccess::lastErrorString() );
      return;
    }
  }

  if ( finalUrl.isValid() ) {
    emit addResource( finalUrl );
    emit dialogFinished( this );
    accept();
  }
}

bool PreviewDialog::isTempFile() const
{
  return mOriginalUrl.path().startsWith( locateLocal( "tmp", "" ) );
}

#include "previewdialog.moc"