import { LitElement, PropertyValues } from 'lit';
import { BpTypeElement } from '@blueprintui/components/internals';
import type { BpTreeItem } from './item/element.js';
/**
 * ```typescript
 * import '@blueprintui/components/include/tree.js';
 * ```
 *
 * ```html
 * <bp-tree></bp-tree>
 * ```
 *
 * @summary The tree component enables hierarchical data organization, offering a collapsible and expandable tree structure. Users can easily navigate through parent and child nodes, expanding or collapsing branches as needed. The component supports for the highlighting of selected nodes.
 * @element bp-tree
 * @since 1.0.0
 * @slot - tree items
 * @cssprop --background
 */
export declare class BpTree extends LitElement implements Pick<BpTypeElement, keyof Omit<BpTree, 'openItems'>> {
    #private;
    /** Controls whether the component automatically manages item expansion and selection based on user interactions */
    accessor interaction: 'auto';
    /** Determines the selection mode for tree items, allowing single or multiple selections */
    accessor selectable: 'multi' | 'single';
    /** @private */
    get openItems(): BpTreeItem[];
    static styles: CSSStyleSheet[];
    _internals: ElementInternals;
    render(): import("lit").TemplateResult<1>;
    connectedCallback(): void;
    updated(props: PropertyValues<this>): void;
}
export declare function updateSelection(item: BpTreeItem): void;