Add ability to undo renumbering of dives

Expand the undo feature by storing a list of renumbered dives' ids
and numbers so that the original numbers can be restored if needed.

Signed-off-by: Grace Karanja <gracie.karanja89@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 31 insertions, 0 deletions

diff --git a/qt-ui/undocommands.cpp b/qt-ui/undocommands.cpp
index 316def495..6a15f7e03 100644
--- a/qt-ui/undocommands.cpp
+++ b/qt-ui/undocommands.cpp
@@ -62,3 +62,34 @@ void UndoShiftTime::redo()
 	mark_divelist_changed(true);
 	MainWindow::instance()->refreshDisplay();
 }
+
+
+UndoRenumberDives::UndoRenumberDives(QMap<int, int> originalNumbers, int startNumber)
+{
+	oldNumbers = originalNumbers;
+	start = startNumber;
+	setText("renumber dive");
+	if (oldNumbers.count() > 1)
+		setText(QString("renumber %1 dives").arg(QString::number(oldNumbers.count())));
+}
+
+void UndoRenumberDives::undo()
+{
+	foreach (int key, oldNumbers.keys()) {
+		struct dive* d = get_dive_by_uniq_id(key);
+		d->number = oldNumbers.value(key);
+	}
+	mark_divelist_changed(true);
+	MainWindow::instance()->refreshDisplay();
+}
+
+void UndoRenumberDives::redo()
+{
+	int i = start;
+	foreach (int key, oldNumbers.keys()) {
+		struct dive* d = get_dive_by_uniq_id(key);
+		d->number = i++;
+	}
+	mark_divelist_changed(true);
+	MainWindow::instance()->refreshDisplay();
+}