~ubuntu-branches/ubuntu/karmic/kid3/karmic

/**

 * \file downloaddialog.cpp

 * Dialog displayed during a download.

 *

 * \b Project: Kid3

 * \author Urs Fleisch

 * \date 31 Dec 2008

 *

 * Copyright (C) 2008-2009  Urs Fleisch

 *

 * This file is part of Kid3.

 *

 * Kid3 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.

 *

 * Kid3 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, see <http://www.gnu.org/licenses/>.

 */

 

#include "downloaddialog.h"

#include "httpclient.h"

#include <qstring.h>

#include "qtcompatmac.h"

 

/**

 * Constructor.

 *

 * @param parent  parent widget

 * @param caption dialog title

 */

DownloadDialog::DownloadDialog(QWidget* parent, const QString& caption) :

        QProgressDialog(parent), m_client(0)

{

        QCM_setWindowTitle(caption);

        connect(this, SIGNAL(canceled()),

                                        this, SLOT(cancelDownload()));

}

 

/**

 * Destructor.

 */

DownloadDialog::~DownloadDialog()

{

        delete m_client;

        m_client = 0;

}

 

/**

 * Display message in status bar.

 *

 * @param msg           status message

 * @param receivedBytes bytes received

 * @param totalBytes    total bytes

 */

void DownloadDialog::updateProgressStatus(const QString& msg,

                                                                                                                                                                        int receivedBytes, int totalBytes)

{

        setLabelText(m_url + '\n' + msg);

        if (receivedBytes >= 0 && totalBytes >= 0) {

#if QT_VERSION >= 0x040000

                setRange(0, totalBytes);

                setValue(receivedBytes);

#else

                setProgress(receivedBytes, totalBytes);

#endif

        }

}

 

/**

 * Send a download request.

 *

 * @param hostName server

 * @param path     path on server

 */

void DownloadDialog::startDownload(const QString& hostName, const QString& path)

{

        if (!m_client) {

                m_client = new HttpClient;

                connect(m_client, SIGNAL(bytesReceived(const QByteArray&)),

                                                this, SLOT(requestFinished(const QByteArray&)));

                connect(m_client, SIGNAL(progress(const QString&, int, int)),

                                                this, SLOT(updateProgressStatus(const QString&, int, int)));

        }

        if (m_client) {

                m_url = "http://";

                m_url += hostName;

                m_url += path;

                setLabelText(m_url);

                updateProgressStatus(i18n("Ready."),

                                     HttpClient::CS_RequestConnection,

                                     HttpClient::CS_EstimatedBytes);

                m_client->sendRequest(hostName, path);

        }

}

 

/**

 * Cancel a download.

 */

void DownloadDialog::cancelDownload()

{

        delete m_client;

        m_client = 0;

        reset();

}

 

/**

 * Handle response when request is finished.

 * downloadFinished() is emitted.

 *

 * @param data received data

 */

void DownloadDialog::requestFinished(const QByteArray& data)

{

        if (!wasCanceled()) {

                emit downloadFinished(data, m_client->getContentType(), m_url);

        }

}