import * as _angular_core from '@angular/core';
import { AfterViewInit, OnDestroy } from '@angular/core';

interface TreeNode {
    id: string;
    label: string;
    icon?: string;
    selectable?: boolean;
    expanded?: boolean;
    children?: TreeNode[];
}
interface Tree {
    nodes: TreeNode[];
}

/**
 * Component rendering a tree.
 */
declare class TreeComponent implements AfterViewInit, OnDestroy {
    private treeService;
    private elRef;
    private items?;
    private _observer;
    /**
     * The tree to be rendered
     */
    tree: _angular_core.InputSignal<Tree>;
    /**
     * Whether or not multiple nodes should be selectable. Only works when selection is enableed by
     * setting 'selectable' attribute:
     *
     * ```html
     * <yuv-tree selectable [multiselect]="true"></yuv-tree
     * ```
     */
    multiselect: _angular_core.InputSignal<boolean>;
    /**
     * Host attribute to enable persistent selection of nodes.
     */
    selectable: string | null;
    private __focusedIndex;
    private set _focusedIndex(value);
    get _focusedIndex(): number;
    /**
     * IDs of nodes that should be set 'selected'.
     */
    set selectedNodes(nodeIds: string[]);
    /**
     * Emitted when selection changes
     */
    selectionChange: _angular_core.OutputEmitterRef<TreeNode[]>;
    readonly tabindex = "0";
    onKeydown(event: KeyboardEvent): void;
    setTreeEffect: _angular_core.EffectRef;
    setTreeMultiselectEffect: _angular_core.EffectRef;
    constructor();
    private _toggle;
    private _selectFocusedNode;
    private _getFocusedNodeId;
    private _getVisibleNodes;
    ngAfterViewInit(): void;
    ngOnDestroy(): void;
    static ɵfac: _angular_core.ɵɵFactoryDeclaration<TreeComponent, never>;
    static ɵcmp: _angular_core.ɵɵComponentDeclaration<TreeComponent, "yuv-tree", never, { "tree": { "alias": "tree"; "required": true; "isSignal": true; }; "multiselect": { "alias": "multiselect"; "required": false; "isSignal": true; }; "selectedNodes": { "alias": "selectedNodes"; "required": false; }; }, { "selectionChange": "selectionChange"; }, never, never, true, never>;
}

export { TreeComponent };
export type { Tree, TreeNode };