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/*
Copyright (C) 2018 Carl Hetherington <cth@carlh.net>
This file is part of DCP-o-matic.
DCP-o-matic 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.
DCP-o-matic 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 DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef DCPOMATIC_CHANGE_SIGNALLER_H
#define DCPOMATIC_CHANGE_SIGNALLER_H
#include <boost/noncopyable.hpp>
template <class T>
class ChangeSignaller : public boost::noncopyable
{
public:
ChangeSignaller (T* t, int p)
: _thing (t)
, _property (p)
, _done (true)
{
_thing->signal_change (CHANGE_TYPE_PENDING, _property);
}
~ChangeSignaller ()
{
if (_done) {
_thing->signal_change (CHANGE_TYPE_DONE, _property);
} else {
_thing->signal_change (CHANGE_TYPE_CANCELLED, _property);
}
}
void abort ()
{
_done = false;
}
private:
T* _thing;
int _property;
bool _done;
};
#endif
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