[pim/kmail] src: Prepare UndoInfoBase class

Git commit b1501807a7fb1899afcdd09804c66ec33f89bdfc by Laurent Montel.
Committed on 22/07/2026 at 18:24.
Pushed by mlaurent into branch 'master'.

Prepare UndoInfoBase class

M  +9    -0    src/undostack.h

https://invent.kde.org/pim/kmail/-/commit/b1501807a7fb1899afcdd09804c66ec33f89bdfc

diff --git a/src/undostack.h b/src/undostack.h
index ec637775d..b4073b275 100644
--- a/src/undostack.h
+++ b/src/undostack.h
@@ -19,6 +19,15 @@ class KJob;
 
 namespace KMail
 {
+class UndoInfoBase
+{
+public:
+    UndoInfoBase() = default;
+    virtual ~UndoInfoBase() { };
+    virtual void undo() = 0;
+    [[nodiscard]] virtual QString undoInfo() const = 0;
+};
+
 /** A class for storing Undo information. */
 class UndoInfo
 {