1 files changed, 21 insertions, 0 deletions
diff --git a/GroupedProxyModel.cpp b/GroupedProxyModel.cpp
new file mode 100644
index 00000000..ab00a412
--- /dev/null
+++ b/GroupedProxyModel.cpp
@@ -0,0 +1,21 @@
+#include "GroupedProxyModel.h"
+
+#include "GroupView.h"
+
+GroupedProxyModel::GroupedProxyModel(QObject *parent) : QSortFilterProxyModel(parent)
+{
+}
+
+bool GroupedProxyModel::lessThan(const QModelIndex &left, const QModelIndex &right) const
+{
+	const QString leftCategory = left.data(CategorizedViewRoles::CategoryRole).toString();
+	const QString rightCategory = right.data(CategorizedViewRoles::CategoryRole).toString();
+	if (leftCategory == rightCategory)
+	{
+		return left.row() < right.row();
+	}
+	else
+	{
+		return leftCategory < rightCategory;
+	}
+}