Undo: make weight editing undoable

Implement the EditWeight undo command. Since there is common code
(storage of the old weight), this creates a common base class for
RemoveWeight and EditWeight. The model calls directly into the undo
command, which is somewhat unfortunate as it feels like a layering
violation. It's the easy thing to do for now.

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

1 files changed, 1 insertions, 0 deletions

diff --git a/qt-models/weightmodel.h b/qt-models/weightmodel.h
index c8f9c9776..1ef7cdf53 100644
--- a/qt-models/weightmodel.h
+++ b/qt-models/weightmodel.h
@@ -35,6 +35,7 @@ slots:
 	void weightsystemsReset(const QVector<dive *> &dives);
 	void weightAdded(dive *d, int pos);
 	void weightRemoved(dive *d, int pos);
+	void weightEdited(dive *d, int pos);
 
 private:
 	dive *d;