API Reference > ui-ninezone > Toolbar > ExpandableItemProps > onIsHistoryExtendedChange onIsHistoryExtendedChange Deprecated onIsHistoryExtendedChange: undefined | (isExtended: boolean) => void Function called when history tray should be extended or shrank. Defined in ui/ninezone/src/ui-ninezone/toolbar/item/expandable/Expandable.tsx Line 33 Last Updated: 13 June, 2024