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/*  This file is part of the TDE libraries
    Copyright (C) 2013 Timothy Pearson
    Based on kivdirectoryoverlay.cc

    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 "config.h"

#include <tqdict.h>
#include <tqpixmap.h>
#include <tqpainter.h>
#include <tqbitmap.h>
#include <tqimage.h>
#include <tqfile.h>

#include <tdefileivi.h>
#include <tdefileitem.h>
#include <tdeapplication.h>
#include <kdirlister.h>
#include <kstandarddirs.h>
#include <kiconloader.h>
#include <konq_settings.h>
#include <tdelocale.h>
#include <kdebug.h>

#ifdef HAVE_STATVFS
# include <sys/statvfs.h>
#else
# include <sys/mount.h>
# define statvfs statfs
# define f_frsize f_bsize
#endif

#include "kivfreespaceoverlay.h"

KIVFreeSpaceOverlay::KIVFreeSpaceOverlay(KFileIVI* freespace)
: m_lister(0)
{
    if (!m_lister)
    {
        m_lister = new KDirLister;
        m_lister->setAutoErrorHandlingEnabled(false, 0);
        connect(m_lister, TQT_SIGNAL(completed()), TQT_SLOT(slotCompleted()));
        connect(m_lister, TQT_SIGNAL(newItems( const KFileItemList& )), TQT_SLOT(slotNewItems( const KFileItemList& )));
        m_lister->setShowingDotFiles(false);
    }
    m_freespace = freespace;
}

KIVFreeSpaceOverlay::~KIVFreeSpaceOverlay()
{
    if (m_lister) m_lister->stop();
    delete m_lister;
}

void KIVFreeSpaceOverlay::start()
{
    if ( m_freespace->item()->isReadable() ) {
        m_lister->openURL(m_freespace->item()->url());
    } else {
        emit finished();
    }
}

void KIVFreeSpaceOverlay::timerEvent(TQTimerEvent *)
{
    m_lister->stop();
}

void KIVFreeSpaceOverlay::slotCompleted()
{
    KFileItem* item = m_freespace->item();
    if (item) {
        bool isLocal = false;
        KURL localURL = item->mostLocalURL(isLocal);
        if (!isLocal) {
            m_freespace->setOverlayProgressBar(-1);
        }
        else {
            TQString localPath = localURL.path();
            if (localPath != "") {
                TDEIO::filesize_t m_total = 0;
                TDEIO::filesize_t m_used = 0;
                TDEIO::filesize_t m_free = 0;

                struct statvfs vfs;
                memset(&vfs, 0, sizeof(vfs));

                if ( ::statvfs(TQFile::encodeName(localPath), &vfs) != -1 )
                {
                    m_total = static_cast<TDEIO::filesize_t>(vfs.f_blocks) * static_cast<TDEIO::filesize_t>(vfs.f_frsize);
                    m_free = static_cast<TDEIO::filesize_t>(vfs.f_bavail) * static_cast<TDEIO::filesize_t>(vfs.f_frsize);
                    m_used = m_total - m_free;
                    m_freespace->setOverlayProgressBar((m_used/(m_total*1.0))*100.0);
                }
                else {
                    m_freespace->setOverlayProgressBar(-1);
                }
            }
            else {
                m_freespace->setOverlayProgressBar(-1);
            }
        }
    }
    else {
        m_freespace->setOverlayProgressBar(-1);
    }

    emit finished();
}

void KIVFreeSpaceOverlay::slotNewItems( const KFileItemList& items )
{
    //
}

#include "kivfreespaceoverlay.moc"