diff options
Diffstat (limited to 'src/gui/itemmodels/qstandarditemmodel.cpp')
-rw-r--r-- | src/gui/itemmodels/qstandarditemmodel.cpp | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/src/gui/itemmodels/qstandarditemmodel.cpp b/src/gui/itemmodels/qstandarditemmodel.cpp index 2998808b54..9bdc22b49e 100644 --- a/src/gui/itemmodels/qstandarditemmodel.cpp +++ b/src/gui/itemmodels/qstandarditemmodel.cpp @@ -138,10 +138,19 @@ void QStandardItemPrivate::setChild(int row, int column, QStandardItem *item, return; } } + + // setting the model to nullptr invalidates the persistent index which we want to avoid + if (!item && oldItem) + oldItem->d_func()->setModel(nullptr); + + children.replace(index, item); + + // since now indexFromItem() does no longer return a valid index, the persistent index + // will not be invalidated anymore if (oldItem) oldItem->d_func()->setModel(nullptr); delete oldItem; - children.replace(index, item); + if (item) item->d_func()->lastKnownIndex = index; |