FolderPanel: prevents scanning directory tree recursively

KFileItemListView contents are periodically scanned by KFileItemModelRolesUpdater.
It uses then KDirectoryContentsCounter to scan directories to determine their size possibly recursively.

Introduce a scanDirectories setting to disable directory scanning by KFileItemModelRolesUpdater.

BUG: 426617
FIXED-IN: 20.08.3

1 files changed, 16 insertions, 1 deletions

diff --git a/src/kitemviews/kfileitemlistview.cpp b/src/kitemviews/kfileitemlistview.cpp
index 6086eb8a2..9833b395f 100644
--- a/src/kitemviews/kfileitemlistview.cpp
+++ b/src/kitemviews/kfileitemlistview.cpp
@@ -39,7 +39,8 @@ KFileItemListView::KFileItemListView(QGraphicsWidget* parent) :
     KStandardItemListView(parent),
     m_modelRolesUpdater(nullptr),
     m_updateVisibleIndexRangeTimer(nullptr),
-    m_updateIconSizeTimer(nullptr)
+    m_updateIconSizeTimer(nullptr),
+    m_scanDirectories(true)
 {
     setAcceptDrops(true);
 
@@ -117,6 +118,19 @@ qlonglong KFileItemListView::localFileSizePreviewLimit() const
     return m_modelRolesUpdater ? m_modelRolesUpdater->localFileSizePreviewLimit() : 0;
 }
 
+void KFileItemListView::setScanDirectories(bool enabled)
+{
+    m_scanDirectories = enabled;
+    if (m_modelRolesUpdater) {
+        m_modelRolesUpdater->setScanDirectories(m_scanDirectories);
+    }
+}
+
+bool KFileItemListView::scanDirectories()
+{
+    return m_scanDirectories;
+}
+
 QPixmap KFileItemListView::createDragPixmap(const KItemSet& indexes) const
 {
     if (!model()) {
@@ -247,6 +261,7 @@ void KFileItemListView::onModelChanged(KItemModelBase* current, KItemModelBase*
     if (current) {
         m_modelRolesUpdater = new KFileItemModelRolesUpdater(static_cast<KFileItemModel*>(current), this);
         m_modelRolesUpdater->setIconSize(availableIconSize());
+        m_modelRolesUpdater->setScanDirectories(scanDirectories());
 
         applyRolesToModel();
     }