igniteui-webcomponents
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Ignite UI for Web Components is a complete library of UI components, giving you the ability to build modern web applications using encapsulation and the concept of reusable components in a dependency-free approach.
42 lines (41 loc) • 1.84 kB
TypeScript
import type IgcTreeItemComponent from './tree-item.js';
import type IgcTreeComponent from './tree.js';
import type { IgcTreeSelectionService } from './tree.selection.js';
export declare const NAVIGATION_KEYS: Set<string>;
export declare class IgcTreeNavigationService {
private tree;
private selectionService;
private _focusedItem;
private _lastFocusedItem;
private _activeItem;
private _visibleChildren;
private _invisibleChildren;
private _disabledChildren;
constructor(tree: IgcTreeComponent, selectionService: IgcTreeSelectionService);
updateVisChild(): void;
get focusedItem(): IgcTreeItemComponent | null;
focusItem(value: IgcTreeItemComponent | null, shouldFocus?: boolean): void;
get activeItem(): IgcTreeItemComponent | null;
setActiveItem(value: IgcTreeItemComponent | null, shouldEmit?: boolean): void;
get visibleChildren(): IgcTreeItemComponent[];
update_disabled_cache(item: IgcTreeItemComponent): void;
delete_item(item: IgcTreeItemComponent): void;
update_visible_cache(item: IgcTreeItemComponent, expanded: boolean, shouldUpdateNestedChildren?: boolean, shouldUpdate?: boolean): void;
/**
* Sets the item as focused (and active)
*
* @param item target item
* @param isActive if true, sets the item as active
*/
setFocusedAndActiveItem(item: IgcTreeItemComponent, isActive?: boolean, shouldFocus?: boolean): void;
/** Handler for keydown events. Used in tree.component.ts */
handleKeydown(event: KeyboardEvent): void;
private handleNavigation;
private handleArrowLeft;
private handleArrowRight;
private handleUpDownArrow;
private handleAsterisk;
private handleSpace;
/** Gets the next visible item in the given direction - 1 -> next, -1 -> previous */
private getVisibleItem;
}