API Reference > presentation-components > Tree > UnifiedSelectionTreeEventHandlerParams UnifiedSelectionTreeEventHandlerParams Interface Beta Data structure that describes parameters for UnifiedSelectionTreeEventHandler Extends TreeEventHandlerParams Properties Name Type Description dataProvider IPresentationTreeDataProvider name undefined | string Unique name for SelectionHandler to avoid handling events raised by itself. Inherited properties Name Type Inherited from Description collapsedChildrenDisposalEnabled undefined | boolean TreeEventHandlerParams Specifies whether children should be disposed when parent node is collapsed or not. editingParams undefined | TreeEditingParams TreeEventHandlerParams Parameters used for node editing. modelSource TreeModelSource TreeEventHandlerParams Model source used to modify tree model while handling events. nodeLoader ITreeNodeLoader TreeEventHandlerParams Node loader used to load children when node is expanded. Defined in presentation/components/src/tree/controlled/UseUnifiedSelection.ts Line 30 Last Updated: 13 June, 2024