Fix layout-issues when sorting by roles that are changed

When sorting is enabled for a role that gets changed e.g. because
a value like the MIME-type is determined asynchronously, then the
layout might get messed up.

slotItemsMoved() has been adjusted to invalidate the sizehint-cache
and to update the group-headers.

BUG: 285542
FIXED-IN: 4.8.0

1 files changed, 4 insertions, 1 deletions

diff --git a/src/kitemviews/kitemlistsizehintresolver_p.h b/src/kitemviews/kitemlistsizehintresolver_p.h
index f4f65eccb..1345e0321 100644
--- a/src/kitemviews/kitemlistsizehintresolver_p.h
+++ b/src/kitemviews/kitemlistsizehintresolver_p.h
@@ -28,6 +28,9 @@
 
 class KItemListView;
 
+/**
+ * @brief Calculates and caches the sizehints of items in KItemListView.
+ */
 class LIBDOLPHINPRIVATE_EXPORT KItemListSizeHintResolver
 {
 public:
@@ -37,7 +40,7 @@ public:
 
     void itemsInserted(int index, int count);
     void itemsRemoved(int index, int count);
-    void itemsMoved(int from, int to, int count);
+    void itemsMoved(int index, int count);
     void itemsChanged(int index, int count, const QSet<QByteArray>& roles);
 
     void clearCache();