UnifiedSelectionTreeEventHandler Class
Tree event handler that handles unified selection. Extends wrapped tree event handler's functionality by adding, removing or replacing nodes in unified selection. It also reacts to unified selection changes and selects/deselects tree nodes according changes.
Note: conditions used to determine if node is selected and nodes that should be added to unified selection can be controlled by overriding 'shouldSelectNode' and 'createKeysForSelection' methods.
Extends
Implements
Methods
| Name | Description | |
|---|---|---|
| constructor(params: UnifiedSelectionTreeEventHandlerParams): UnifiedSelectionTreeEventHandler | ||
| createKeysForSelection(nodes: TreeNodeItem[], _selectionType: SelectionChangeType): Keys Protected | Returns node keys that should be added, removed or used to replace unified selection. | |
| dispose(): void | ||
| getKeys(nodes: TreeNodeItem[]): Keys Protected | ||
| getNodeKey(node: TreeNodeItem): NodeKey Protected | ||
| onSelectionModified(__namedParameters: TreeSelectionModificationEventArgs): undefined | Subscription | ||
| onSelectionReplaced(__namedParameters: TreeSelectionReplacementEventArgs): undefined | Subscription | ||
| selectNodes(modelChange?: TreeModelChanges): void | ||
| shouldSelectNode(node: TreeNodeItem, selection: Readonly<KeySet>): boolean Protected | Determines if node should be selected. |
Inherited methods
| Name | Inherited from | Description |
|---|---|---|
| onCheckboxStateChanged(__namedParameters: TreeCheckboxStateChangeEventArgs): undefined | Subscription | TreeEventHandler | Changes nodes checkbox states. |
| onDelayedNodeClick(__namedParameters: TreeNodeEventArgs): void | TreeEventHandler | Activates node editing if editing parameters are supplied and node is editable. |
| onNodeCollapsed(__namedParameters: TreeNodeEventArgs): void | TreeEventHandler | Collapses node |
| onNodeEditorActivated(__namedParameters: TreeNodeEventArgs): void | TreeEventHandler | Activates node editing if editing parameters are supplied and node is editable. |
| onNodeExpanded(__namedParameters: TreeNodeEventArgs): void | TreeEventHandler | Expands node and starts loading children. |
Properties
| Name | Type | Description | |
|---|---|---|---|
| modelSource Accessor ReadOnly | TreeModelSource |
Defined in
Last Updated: 20 June, 2023