API Reference > ui-components > Tree > TreeEventHandlerParams TreeEventHandlerParams Interface Data structure that describes tree event handler params. Properties Name Type Description collapsedChildrenDisposalEnabled undefined | boolean Specifies whether children should be disposed when parent node is collapsed or not. editingParams undefined | TreeEditingParams Parameters used for node editing. modelSource TreeModelSource Model source used to modify tree model while handling events. nodeLoader ITreeNodeLoader Node loader used to load children when node is expanded. Defined in ui/components/src/ui-components/tree/controlled/TreeEventHandler.ts Line 34 Last Updated: 11 June, 2024