Undo: implement undo of dive site description editing

Simply duplicate the code of dive site name editing. Split out
the common functionality that swaps a C and a Qt string.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>

1 files changed, 12 insertions, 0 deletions

diff --git a/desktop-widgets/command_divesite.h b/desktop-widgets/command_divesite.h
index 692e5c109..78622862e 100644
--- a/desktop-widgets/command_divesite.h
+++ b/desktop-widgets/command_divesite.h
@@ -38,6 +38,18 @@ private:
 	QString value; // Value to be set
 };
 
+class EditDiveSiteDescription : public Base {
+public:
+	EditDiveSiteDescription(dive_site *ds, const QString &description);
+private:
+	bool workToBeDone() override;
+	void undo() override;
+	void redo() override;
+
+	dive_site *ds;
+	QString value; // Value to be set
+};
+
 } // namespace Command
 
 #endif // COMMAND_DIVESITE_H