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/*
Copyright (c) 2017 Christian Mollekopf <mollekopf@kolabsys.com>
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.
*/
#pragma once
#include <QtConcurrent/QtConcurrentRun>
#include <QFuture>
#include <QFutureWatcher>
#include <QPointer>
template<typename T>
void asyncRun(QObject *object, std::function<T()> run, std::function<void(T)> continuation)
{
auto guard = QPointer<QObject>{object};
auto future = QtConcurrent::run(run);
auto watcher = new QFutureWatcher<T>;
QObject::connect(watcher, &QFutureWatcher<T>::finished, watcher, [watcher, continuation, guard]() {
if (guard) {
continuation(watcher->future().result());
}
delete watcher;
});
watcher->setFuture(future);
}
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