1 files changed, 42 insertions, 0 deletions
diff --git a/application/groupview/GroupedProxyModel.cpp b/application/groupview/GroupedProxyModel.cpp
new file mode 100644
index 00000000..a45c5ae9
--- /dev/null
+++ b/application/groupview/GroupedProxyModel.cpp
@@ -0,0 +1,42 @@
+#include "GroupedProxyModel.h"
+
+#include "GroupView.h"
+#include <QDebug>
+
+GroupedProxyModel::GroupedProxyModel(QObject *parent) : QSortFilterProxyModel(parent)
+{
+}
+
+bool GroupedProxyModel::lessThan(const QModelIndex &left, const QModelIndex &right) const
+{
+	const QString leftCategory = left.data(GroupViewRoles::GroupRole).toString();
+	const QString rightCategory = right.data(GroupViewRoles::GroupRole).toString();
+	if (leftCategory == rightCategory)
+	{
+		return subSortLessThan(left, right);
+	}
+	else
+	{
+		// FIXME: real group sorting happens in GroupView::updateGeometries(), see LocaleString
+		auto result = leftCategory.localeAwareCompare(rightCategory);
+		if(result < 0)
+		{
+			qDebug() << leftCategory << "<" << rightCategory;
+		}
+		if(result == 0)
+		{
+			qDebug() << leftCategory << "=" << rightCategory;
+			return subSortLessThan(left, right);
+		}
+		if(result > 0)
+		{
+			qDebug() << leftCategory << ">" << rightCategory;
+		}
+		return result < 0;
+	}
+}
+
+bool GroupedProxyModel::subSortLessThan(const QModelIndex &left, const QModelIndex &right) const
+{
+	return left.row() < right.row();
+}