diff options
Diffstat (limited to 'src')
-rw-r--r-- | src/widgets/itemviews/qtreeview.cpp | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/widgets/itemviews/qtreeview.cpp b/src/widgets/itemviews/qtreeview.cpp index df6ba708a9..fb26343af2 100644 --- a/src/widgets/itemviews/qtreeview.cpp +++ b/src/widgets/itemviews/qtreeview.cpp @@ -2668,6 +2668,8 @@ void QTreeView::expandToDepth(int depth) { Q_D(QTreeView); d->viewItems.clear(); + QSet<QPersistentModelIndex> old_expandedIndexes; + old_expandedIndexes = d->expandedIndexes; d->expandedIndexes.clear(); d->interruptDelayedItemsLayout(); d->layout(-1); @@ -2678,6 +2680,24 @@ void QTreeView::expandToDepth(int depth) d->storeExpanded(d->viewItems.at(i).index); } } + + // emit signals + QSet<QPersistentModelIndex> collapsedIndexes = old_expandedIndexes - d->expandedIndexes; + QSet<QPersistentModelIndex>::const_iterator i = collapsedIndexes.constBegin(); + for (; i != collapsedIndexes.constEnd(); ++i) { + const QPersistentModelIndex &mi = (*i); + if (mi.isValid() && !(mi.flags() & Qt::ItemNeverHasChildren)) + emit collapsed(mi); + } + + QSet<QPersistentModelIndex> expandedIndexs = d->expandedIndexes - old_expandedIndexes; + i = expandedIndexs.constBegin(); + for (; i != expandedIndexs.constEnd(); ++i) { + const QPersistentModelIndex &mi = (*i); + if (mi.isValid() && !(mi.flags() & Qt::ItemNeverHasChildren)) + emit expanded(mi); + } + updateGeometries(); d->viewport->update(); } |