| onAfterAdd | fires after adding an item to the datastore |
| onAfterClose | fires after the branch has been closed |
| onAfterContextMenu | fires after the context menu was called in the item area |
| onAfterDelete | fires after an item is removed |
| onAfterDrop | fires after drag-n-drop was finished |
| onAfterLoad | fires after data loading is complete |
| onAfterOpen | fires after the branch has been opened |
| onAfterRender | occurs immediately after the component has been rendered |
| onAfterScroll | occurs when some webix view has been scrolled |
| onAfterSelect | fires after an item has been selected |
| onAfterSort | fires after sorting dataset |
| onAfterUnSelect | fires after an item has been unselected |
| onBeforeAdd | fires before adding an item to the datastore |
| onBeforeClose | fires the moment you attempt to close the tree branch |
| onBeforeContextMenu | fires before the context menu is called in the item area |
| onBeforeDelete | fires before an item is removed |
| onBeforeDrag | fires before the mouse button is pressed and the cursor is moved over a draggable item |
| onBeforeDragIn | fires before a dragged element is moved over the droppable area |
| onBeforeDrop | fires before a dragged element is released over the droppable area |
| onBeforeDropOut | fires before a dragged element is released over the droppable area outside the source widget |
| onBeforeLoad | fires immediately before data loading has started |
| onBeforeOpen | fires the moment you attempt to open the tree branch |
| onBeforeRender | occurs immediately before the component has been rendered |
| onBeforeSelect | fires before item selection has started |
| onBeforeSort | fires before sorting of the dataset |
| onBeforeUnSelect | fires before unselection of an item has started |
| onBindRequest | fires when the component is ready to receive data from the master component |
| onBlur | fires when focus is moved out of the view |
| onDataRequest | fires when data from the server is requested for linear data structures (List, DataTable, DataView etc.) to implement dynamic data loading |
| onDataUpdate | fires when a data item is being updated |
| onDestruct | occurs when component destroyed |
| onDragOut | fires when a dragged element is moved outside of the droppable area |
| onEnter | fires when the Enter key has been pressed |
| onFocus | fires when a view gets focus |
| onItemCheck | called when the checkbox inside the tree item was checked |
| onItemClick | fires when a component item was clicked |
| onItemDblClick | fires when a component item was double-clicked |
| onItemRender | for each item rendering, occurs only for items with custom templates |
| onItemSingleClick | allows distinguishing between single and double-click events |
| onKeyPress | occurs when keyboard key is pressed for the control in focus |
| onLoadError | fires when an error occurs during data loading (invalid server side response) |
| onLongTouch | fires on holding finger in some position for a certain period of time |
| onMouseMove | fires when the mouse was moved over the specified component |
| onMouseMoving | fires when the mouse was moved over the component |
| onMouseOut | fires when the mouse was moved out from the specified item |
| onPartialRender | called when part of tree is repainted |
| onPaste | fires when the clipboard is enabled and the user presses CTRL+V keys combination |
| onSelectChange | fires after selection state was changed |
| onSwipeX | occurs on a horizontal swipe movement |
| onSwipeY | occurs on a vertical swipe movement |
| onTabFocus | fires after a tab focus has been changed |
| onTimedKeyPress | fires after typing has been finished in the field |
| onTouchEnd | occurs when the touch event is ended |
| onTouchMove | occurs during touch movement |
| onTouchStart | fires when some webix view has been touched |
| onValidationError | fires when newly loaded/added/edited data fail to pass validation |
| onValidationSuccess | fires after the newlyloaded/added/edited data has passes validation successfully |
| onViewResize | fires when the size of a view has been changed by resizer |
| onViewShow | fires when any hidden view is shown |