KFileItemModelRolesUpdater: only update the size for changed folders

When using inotify, we also receive signals for modified files, even if
we only ask KDirWatch to watch the directory containing them. In that
case, we must not set the size to -1 (which means "unknown number of
items" for folders) temporarily, or we end up with an apparent file size
of 2^64 - 1 bytes.

BUG: 309740
FIXED-IN: 4.10.4
REVIEW: 110428

1 files changed, 7 insertions, 0 deletions

diff --git a/src/kitemviews/kfileitemmodelrolesupdater.cpp b/src/kitemviews/kfileitemmodelrolesupdater.cpp
index 39d01e232..7cade10f5 100644
--- a/src/kitemviews/kfileitemmodelrolesupdater.cpp
+++ b/src/kitemviews/kfileitemmodelrolesupdater.cpp
@@ -630,6 +630,13 @@ void KFileItemModelRolesUpdater::slotDirWatchDirty(const QString& path)
     if (getSizeRole || getIsExpandableRole) {
         const int index = m_model->index(KUrl(path));
         if (index >= 0) {
+            if (!m_model->fileItem(index).isDir()) {
+                // If INotify is used, KDirWatch issues the dirty() signal
+                // also for changed files inside the directory, even if we
+                // don't enable this behavior explicitly (see bug 309740).
+                return;
+            }
+
             QHash<QByteArray, QVariant> data;
 
             const int count = subItemsCount(path);