/*
    This file is part of KNewStuff2.
    Copyright (c) 2006, 2007 Josef Spillner <spillner@kde.org>

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 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
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef KNEWSTUFF3_IMAGELOADER_P_H
#define KNEWSTUFF3_IMAGELOADER_P_H

#include <QImage>
#include <QObject>
#include <QByteArray>

#include "entryinternal.h"
#include "jobs/httpjob.h"

class KJob;

namespace KNSCore
{

/**
 * Convenience class for images with remote sources.
 *
 * This class represents a fire-and-forget approach of loading images
 * in applications. The image will load itself.
 * Using this class also requires using QAsyncFrame or similar UI
 * elements which allow for asynchronous image loading.
 *
 * This class is used internally by the DownloadDialog class.
 *
 * @internal
 */
class ImageLoader : public QObject
{
    Q_OBJECT
public:
    ImageLoader(const EntryInternal &entry, EntryInternal::PreviewType type, QObject *parent);
    void start();
    /**
     * Get the job doing the image loading in the background (to have progress information available)
     * @return the job
     */
    KJob *job();

Q_SIGNALS:
    void signalPreviewLoaded(const KNSCore::EntryInternal &, KNSCore::EntryInternal::PreviewType);
    void signalError(const KNSCore::EntryInternal &, KNSCore::EntryInternal::PreviewType, const QString &);

private Q_SLOTS:
    void slotDownload(KJob *job);
    void slotData(KJob *job, const QByteArray &buf);

private:
    EntryInternal m_entry;
    EntryInternal::PreviewType m_previewType;
    QByteArray m_buffer;
    HTTPJob *m_job = nullptr;
};
}
#endif

