Add ability to undo shifting of dive time

Adds the ability to undo shifting of dive times. The change is captured
at simplewidgets.cpp and an undo command is created.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/qt-ui/undocommands.h b/qt-ui/undocommands.h
index 9a7803f9e..addef8138 100644
--- a/qt-ui/undocommands.h
+++ b/qt-ui/undocommands.h
@@ -14,4 +14,15 @@ private:
 	QList<struct dive*> dives;
 };
 
+class UndoShiftTime : public QUndoCommand {
+public:
+	UndoShiftTime(QList<int> diveList, int amount);
+	virtual void undo();
+	virtual void redo();
+
+private:
+	QList<int> dives;
+	int timeChanged;
+};
+
 #endif // UNDOCOMMANDS_H