Make renaming markers undoable

app/widget/marker/markerundo.cpp

@@ -89,4 +89,27 @@ void MarkerChangeColorCommand::undo()
   marker_->set_color(old_color_);
 }
 
+MarkerChangeNameCommand::MarkerChangeNameCommand(Project *project, TimelineMarker *marker, QString new_name) :
+    project_(project),
+    marker_(marker),
+    old_name_(marker->name()),
+    new_name_(new_name)
+{
+}
+
+Project* MarkerChangeNameCommand::GetRelevantProject() const
+{
+  return project_;
+}
+
+void MarkerChangeNameCommand::redo()
+{
+  marker_->set_name(new_name_);
+}
+
+void MarkerChangeNameCommand::undo()
+{
+  marker_->set_name(old_name_);
+}
+
 }

app/widget/marker/markerundo.h

@@ -78,6 +78,23 @@ class MarkerChangeColorCommand : public UndoCommand {
     int new_color_;
 };
 
+class MarkerChangeNameCommand : public UndoCommand {
+ public:
+  MarkerChangeNameCommand(Project* project, TimelineMarker* marker, QString name);
+
+  virtual Project* GetRelevantProject() const override;
+
+ protected:
+  virtual void redo() override;
+  virtual void undo() override;
+
+ private:
+  Project* project_;
+  TimelineMarker* marker_;
+  QString old_name_;
+  QString new_name_;
+};
+
 }
 
 #endif  // TIMELINEUNDOTRACK_H

app/widget/timeruler/seekablewidget.cpp

@@ -211,7 +211,7 @@ void SeekableWidget::addMarker(TimelineMarker* marker)
     connect(marker_widget, &Marker::ActiveChanged, marker, &TimelineMarker::set_active);
     connect(marker, &TimelineMarker::ActiveChanged, marker_widget, &Marker::SetActive);
 
-    connect(marker_widget, &Marker::NameChanged, marker, &TimelineMarker::set_name);
+    connect(marker_widget, &Marker::NameChanged, marker, &TimelineMarker::set_name_undo);
     connect(marker, &TimelineMarker::NameChanged, marker_widget, &Marker::SetName);
 
     connect(marker_widget, &Marker::TimeChanged, marker, &TimelineMarker::set_time);