+QList<QPair<int, QVariant> > KItemModelBase::groups() const
+{
+ return QList<QPair<int, QVariant> >();
+}
+
+bool KItemModelBase::setExpanded(int index, bool expanded)
+{
+ Q_UNUSED(index)
+ Q_UNUSED(expanded)
+ return false;
+}
+
+bool KItemModelBase::isExpanded(int index) const
+{
+ Q_UNUSED(index)
+ return false;
+}
+
+bool KItemModelBase::isExpandable(int index) const
+{
+ Q_UNUSED(index)
+ return false;
+}
+
+int KItemModelBase::expandedParentsCount(int index) const
+{
+ Q_UNUSED(index)
+ return 0;
+}
+
+QMimeData* KItemModelBase::createMimeData(const KItemSet& indexes) const
+{
+ Q_UNUSED(indexes)
+ return nullptr;
+}
+
+int KItemModelBase::indexForKeyboardSearch(const QString& text, int startFromIndex) const
+{
+ Q_UNUSED(text)
+ Q_UNUSED(startFromIndex)
+ return -1;
+}
+
+bool KItemModelBase::supportsDropping(int index) const
+{
+ Q_UNUSED(index)
+ return false;
+}
+
+QString KItemModelBase::blacklistItemDropEventMimeType() const
+{
+ return QStringLiteral("application/x-dolphin-blacklist-drop");
+}
+
+void KItemModelBase::onGroupedSortingChanged(bool current)