X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fcontent_part.h;h=590be311289406c738b153423d5a6ab206a8d9e2;hb=182b9d2e2feb6545592868606aaf0f0146095481;hp=98e9a6d1ce2c046ea25d9bd13959a38c9ab347e7;hpb=29fe2d3a4c347e15b987f9e61e56d22a21d4678f;p=dcpomatic.git

diff --git a/src/lib/content_part.h b/src/lib/content_part.h
index 98e9a6d1c..590be3112 100644
--- a/src/lib/content_part.h
+++ b/src/lib/content_part.h
@@ -1,36 +1,41 @@
 /*
-    Copyright (C) 2016 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2016-2021 Carl Hetherington <cth@carlh.net>
 
-    This program is free software; you can redistribute it and/or modify
+    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.
 
-    This program is distributed in the hope that it will be useful,
+    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 this program; if not, write to the Free Software
-    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+    along with DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.
 
 */
 
+
 #ifndef DCPOMATIC_CONTENT_PART_H
 #define DCPOMATIC_CONTENT_PART_H
 
+
+#include "change_signaller.h"
 #include "content.h"
-#include <boost/weak_ptr.hpp>
 #include <boost/thread/mutex.hpp>
 
+
 class Content;
 class Film;
 
+
 class ContentPart
 {
 public:
-	ContentPart (Content* parent)
+	explicit ContentPart (Content* parent)
 		: _parent (parent)
 	{}
 
@@ -39,32 +44,35 @@ protected:
 	void
 	maybe_set (T& member, T new_value, int property) const
 	{
+		ContentChangeSignaller cc (_parent, property);
 		{
 			boost::mutex::scoped_lock lm (_mutex);
 			if (member == new_value) {
+				cc.abort ();
 				return;
 			}
 			member = new_value;
 		}
-		_parent->signal_changed (property);
 	}
 
 	template <class T>
 	void
 	maybe_set (boost::optional<T>& member, T new_value, int property) const
 	{
+		ContentChangeSignaller cc (_parent, property);
 		{
 			boost::mutex::scoped_lock lm (_mutex);
 			if (member && member.get() == new_value) {
+				cc.abort ();
 				return;
 			}
 			member = new_value;
 		}
-		_parent->signal_changed (property);
 	}
 
 	Content* _parent;
 	mutable boost::mutex _mutex;
 };
 
+
 #endif