Turn almost all Listeners into abstract interfaces

2018-10-09 20:32:40 +02:00
parent 2a9d3896bb
commit 2125f42116
159 changed files with 1385 additions and 939 deletions
--- a/rtgui/filterpanel.h
+++ b/rtgui/filterpanel.h
@@ -24,9 +24,9 @@

 class FilterPanelListener
 {
-
 public:
-    virtual void exifFilterChanged () {}
+    virtual ~FilterPanelListener() = default;
+    virtual void exifFilterChanged () = 0;
 };

 class FilterPanel : public Gtk::VBox