isCollapsible
&& previousInfo->isCollapsible;
&& nextInfo->isCollapsible;
&& previousInfo->isCollapsible) {
&& nextInfo->isCollapsible) {
&& previousInfo->isCollapsible) {
if (previousSize < nextSize && previousInfo->isCollapsible) {
} else if (nextInfo->isCollapsible) {
bool isCollapsible;
return _ItemLayoutInfo(ItemAt(index))->isCollapsible;
_ItemLayoutInfo(ItemAt(i))->isCollapsible = collapsible;
err = into->AddBool(kItemCollapsibleField, info->isCollapsible);
bool* collapsible = &info->isCollapsible;