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harbour-sailfin/core/include/JellyfinQt/viewmodel/utils.h
Chris Josten b8933ddca4 Move QObject-wrapping code into templates
Previously, this pattern was copy-pasted in a few places. This is
undesirable, so the code has been moved into templates.

Fixes #30
2022-08-24 17:00:14 +02:00

79 lines
2.8 KiB
C++

/*
* Sailfin: a Jellyfin client written using Qt
* Copyright (C) 2022 Chris Josten and the Sailfin Contributors.
*
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef JELLYFIN_VIEWMODEL_UTILS_H
#define JELLYFIN_VIEWMODEL_UTILS_H
#include <QObject>
#include <QSharedPointer>
#include <QVariant>
/**
* \brief Wraps a data object in a QObject.
*
* This class is made for use in the ViewModel namespace, since many
* objects follow the pattern of having a constructor with a QSharedPointer<DTO::SomeItem>
* and a parent.
*
* The QObject wrapper class W must have a accessible constructor which takes only a QSharedPointer<D>
* as argument.
*
* \tparam W The QObject wrapper class
* \tparam D The DTO class
* \param data The data to wrap in a QObject
* \param parent The QObject to set as the parent of the newly created type.
*/
template<typename W, typename D>
W *wrapQObject(D data, QObject *parent) {
return new W(QSharedPointer<D>::create(data), parent);
}
/**
* \brief Wraps a list of DTO items in a QVariantList of QObject's
* \see wrapQObject()
* \param begin The begin iterator of the list of DTO items
* \param end The end iterator of the list of DTO items
* \param parent The QObject to set as the parent of the QObjects in the newly created list.
*/
template<typename W, typename D, typename It>
QVariantList wrapQVariantList(It begin, It end, QObject *parent) {
QVariantList result;
for (It it = begin; it != end; it++) {
result.append(QVariant::fromValue(wrapQObject<W, D>(*it, parent)));
}
return result;
}
/**
* \brief Wraps a list of DTO items in a QObjectList.
* \see wrapQObject()
* \param begin The begin iterator of the list of DTO items
* \param end The end iterator of the list of DTO items
* \param parent The QObject to set as the parent of the QObjects in the newly created list.
*/
template<typename W, typename D, typename It>
QObjectList wrapQObjectList(It begin, It end, QObject *parent) {
QObjectList result;
for (It it = begin; it != end; it++) {
result.append(wrapQObject<W, D>(*it, parent));
}
return result;
}
#endif // JELLYFIN_VIEWMODEL_UTILS_H