qBittorrent/src/base/torrentfileguard.h
2016-05-13 00:12:33 +02:00

95 lines
3.3 KiB
C++

/*
* Bittorrent Client using Qt and libtorrent.
* Copyright (C) 2016 Eugene Shalygin <eugene.shalygin@gmail.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.
*
* In addition, as a special exception, the copyright holders give permission to
* link this program with the OpenSSL project's "OpenSSL" library (or with
* modified versions of it that use the same license as the "OpenSSL" library),
* and distribute the linked executables. You must obey the GNU General Public
* License in all respects for all of the code used other than "OpenSSL". If you
* modify file(s), you may extend this exception to your version of the file(s),
* but you are not obligated to do so. If you do not wish to do so, delete this
* exception statement from your version.
*/
#include <QString>
#include <QMetaType>
class QMetaEnum;
/// Utility class to defer file deletion
class FileGuard
{
public:
FileGuard(const QString &path = QString());
~FileGuard();
/// Cancels or re-enables deferred file deletion
void setAutoRemove(bool remove) noexcept;
private:
QString m_path;
bool m_remove;
};
/// Reads settings for .torrent files from preferences
/// and sets the file guard up accordingly
class TorrentFileGuard
{
Q_GADGET
public:
TorrentFileGuard(const QString &path = QString());
~TorrentFileGuard();
/// marks the torrent file as loaded (added) into the BitTorrent::Session
void markAsAddedToSession();
void setAutoRemove(bool remove);
enum AutoDeleteMode // do not change these names: they are stored in config file
{
Never,
IfAdded,
Always
};
// static interface to get/set preferences
static AutoDeleteMode autoDeleteMode();
static void setAutoDeleteMode(AutoDeleteMode mode);
private:
static QMetaEnum modeMetaEnum();
#if QT_VERSION < QT_VERSION_CHECK(5, 5, 0)
Q_ENUMS(AutoDeleteMode)
#else
Q_ENUM(AutoDeleteMode)
#endif
AutoDeleteMode m_mode;
bool m_wasAdded;
// Qt 4 moc has troubles with Q_GADGET: if Q_GADGET is present in a class, moc unconditionally
// references in the generated code the statiMetaObject from the class ancestor.
// Moreover, if the ancestor class has Q_GADGET but does not have other
// Q_ declarations, moc does not generate staticMetaObject for it. These results
// in referencing the non existent staticMetaObject and such code fails to compile.
// This problem is NOT present in Qt 5.7.0 and maybe in some older Qt 5 versions too
// Qt 4.8.7 has it.
// Therefore, we can't inherit FileGuard :(
FileGuard m_guard;
};
#if QT_VERSION < QT_VERSION_CHECK(5, 5, 0)
Q_DECLARE_METATYPE(TorrentFileGuard::AutoDeleteMode)
#endif