--- /dev/null
+/*
+ Copyright (C) 2013-2018 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/>.
+
+*/
+
+#include "content_change.h"
+#include "content.h"
+
+ContentChange::ContentChange (Content* c, int p)
+ : _content (c)
+ , _property (p)
+ , _done (true)
+{
+ _content->MayChange ();
+}
+
+
+ContentChange::~ContentChange ()
+{
+ if (_done) {
+ _content->signal_changed (_property);
+ } else {
+ _content->NotChanged ();
+ }
+}
+
+void
+ContentChange::abort ()
+{
+ _done = false;
+}