+bool KFileItemModel::isConsistent() const
+{
+ // Check that m_items and m_itemData are consistent, and that the items are sorted.
+ if (m_items.count() != m_itemData.count()) {
+ return false;
+ }
+
+ for (int i = 0; i < count(); ++i) {
+ const KFileItem item = fileItem(i);
+ if (item.isNull()) {
+ qWarning() << "Item" << i << "is null";
+ return false;
+ }
+
+ const int itemIndex = index(item);
+ if (itemIndex != i) {
+ qWarning() << "Item" << i << "has a wrong index:" << itemIndex;
+ return false;
+ }
+
+ if (i > 0 && !lessThan(m_itemData.at(i - 1), m_itemData.at(i))) {
+ qWarning() << "The order of items" << i - 1 << "and" << i << "is wrong:"
+ << fileItem(i - 1) << fileItem(i);
+ return false;
+ }
+ }
+
+ return true;
+}
+