QFileSystemModel: reimplement sibling for same-row

Since QFSM, like most models, uses QModelIndex::internalPointer() as an
indicator of the row, getting a sibling in the same row is as easy as
copying the internalPointer() of the incoming index and just creating
a new index with the column adjusted.

For rows, the situation is quite a bit more complicated, so we
currently continue to call the generic implementation.

Change-Id: I36921e3f9c01c458a75aa439018f21c4c657e1cf
Reviewed-by: David Faure <david.faure@kdab.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/widgets/dialogs/qfilesystemmodel.h b/src/widgets/dialogs/qfilesystemmodel.h
index f749c97bcb..cef85a0c8c 100644
--- a/src/widgets/dialogs/qfilesystemmodel.h
+++ b/src/widgets/dialogs/qfilesystemmodel.h
@@ -75,6 +75,7 @@ public:
     QModelIndex index(int row, int column, const QModelIndex &parent = QModelIndex()) const Q_DECL_OVERRIDE;
     QModelIndex index(const QString &path, int column = 0) const;
     QModelIndex parent(const QModelIndex &child) const Q_DECL_OVERRIDE;
+    QModelIndex sibling(int row, int column, const QModelIndex &idx) const Q_DECL_OVERRIDE;
     bool hasChildren(const QModelIndex &parent = QModelIndex()) const Q_DECL_OVERRIDE;
     bool canFetchMore(const QModelIndex &parent) const Q_DECL_OVERRIDE;
     void fetchMore(const QModelIndex &parent) Q_DECL_OVERRIDE;