detach method
override
Mark this render object as detached from its PipelineOwner.
Typically called only from the parent's detach, and by the owner to mark the root of a tree as detached.
Subclasses with children should override this method to
detach all their children after calling the inherited method,
as in super.detach()
.
Implementation
@override
void detach() {
super.detach();
if (_rowDecorationPainters != null) {
for (final BoxPainter? painter in _rowDecorationPainters!) {
painter?.dispose();
}
_rowDecorationPainters = List<BoxPainter?>.filled(_rowDecorations!.length, null);
}
for (final RenderBox? child in _children) {
child?.detach();
}
}