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/fileselectionchangelistener.h
+++ b/rtgui/fileselectionchangelistener.h
@@ -19,13 +19,13 @@
 #ifndef _FILESELECTIONCHANGELISTENER_
 #define _FILESELECTIONCHANGELISTENER_

-#include "thumbnail.h"
+class Thumbnail;

 class FileSelectionChangeListener
 {
-
 public:
-    virtual void selectionChanged       (const std::vector<Thumbnail*>& selected) {}
+    virtual ~FileSelectionChangeListener() = default;
+    virtual void selectionChanged(const std::vector<Thumbnail*>& selected) = 0;
 };

 #endif