Undo: implement undo of geo lookup

Simply copy code of the other edit dive site functions. Here though
introduce a destructor in the undo command to free the taxonomy data.

Remove the taxonomy member of the LocationInformationWidget class,
because it is not needed anymore.

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

1 files changed, 13 insertions, 0 deletions

diff --git a/desktop-widgets/command_divesite.h b/desktop-widgets/command_divesite.h
index bf6fb3dc4..b73cc1b5a 100644
--- a/desktop-widgets/command_divesite.h
+++ b/desktop-widgets/command_divesite.h
@@ -104,6 +104,19 @@ private:
 	location_t value; // Value to be set
 };
 
+class EditDiveSiteTaxonomy : public Base {
+public:
+	EditDiveSiteTaxonomy(dive_site *ds, taxonomy_data &taxonomy);
+	~EditDiveSiteTaxonomy(); // free taxonomy
+private:
+	bool workToBeDone() override;
+	void undo() override;
+	void redo() override;
+
+	dive_site *ds;
+	taxonomy_data value; // Value to be set
+};
+
 } // namespace Command
 
 #endif // COMMAND_DIVESITE_H