import { FlatTreeControl } from '@angular/cdk/tree';
import { ChangeDetectorRef, ElementRef, OnChanges, OnDestroy, OnInit } from '@angular/core';
import { BehaviorSubject } from 'rxjs';
import { TreeNodeDirective } from './tree-node.directive';
import { INode, ITree, ITreeAdapter, ITreeEdition, ITreeFilter, ITreeNodeHolder, ITreeState } from './tree.model';
import * as i0 from "@angular/core";
export declare class TreeComponent<T> implements ITree<T>, OnInit, OnChanges, OnDestroy {
    private readonly elementRef;
    private readonly changeDetectorRef;
    nodes: T[];
    adapter: ITreeAdapter<T>;
    protected nodeDirective: TreeNodeDirective<T>;
    private readonly DATA_TREE_NODE_ID;
    private readonly flattener;
    private readonly dataSource;
    private readonly nodesIndex;
    private readonly parentsIndex;
    private readonly hiddenNodes;
    private readonly selectedNodes;
    private isEmpty;
    private isShiftKeyPressed;
    private activeNode?;
    private stateBeforeSearching;
    protected editing: Partial<ITreeEdition<T>>;
    protected readonly visibleNodes: BehaviorSubject<ITreeNodeHolder<T>[]>;
    readonly filter: ITreeFilter;
    readonly controler: FlatTreeControl<ITreeNodeHolder<T>>;
    protected get treeHeight(): string;
    constructor(elementRef: ElementRef<HTMLElement>, changeDetectorRef: ChangeDetectorRef);
    ngOnInit(): void;
    ngOnChanges(): void;
    ngOnDestroy(): void;
    selections(): T[];
    focusedNode(): T | undefined;
    isFocused(node: INode<T>): boolean;
    isExpanded(node: INode<T>): boolean;
    isSelected(node: INode<T>): boolean;
    focus(node: INode<T>, render?: boolean): void;
    unfocus(): void;
    expand(node: INode<T>, render?: boolean): void;
    expandAll(render?: boolean): void;
    collapse(node: INode<T>, render?: boolean): void;
    collapseAll(render?: boolean): void;
    toggle(node: INode<T>, render?: boolean): void;
    startEdition(node: INode<T>, creation?: boolean): void;
    endEdition(): void;
    search(filter: ITreeFilter): void;
    saveState(): ITreeState;
    restoreState(state: ITreeState): void;
    protected _onEdit(event: Event): void;
    protected _clearFilter(): void;
    protected _isRenaming(node: INode<T>): boolean;
    protected _isCreating(node: INode<T>): boolean;
    protected _trackById(_: number, e: ITreeNodeHolder<T>): string;
    keyup(): void;
    keydown($event: KeyboardEvent): void;
    mousedown($event: MouseEvent): void;
    contextmenu($event: MouseEvent): void;
    private onKeyDown;
    private onMouseDown;
    private onContextMenu;
    private isTreeContainsEvent;
    private triggerFilterEvent;
    private triggerKeyboardEvent;
    private render;
    private buildIndexes;
    private buildSearchPattern;
    /**
     * Gets the dom element associated to the given node.
     * @param e A node.
     */
    private domNode;
    /**
     * Adds the given node to the selected nodes.
     * @param node The node to select.
     */
    private select;
    /**
     * Removes the given node to the selected nodes.
     * @param node The node to unselect.
     */
    private unselect;
    /**
     * Clears the selected nodes.
     */
    private unselectAll;
    /**
     * Expands the ancestors of the given node.
     * @param node A node reference.
     */
    private expandAncestors;
    /**
     * Call the given `action` for the ancestors of the given node.
     * @param node A node reference.
     * @param action A function to call for each ancestor.
     */
    private iterateAncestors;
    /**
     * Moves the scrollbar to the given node.
     * @param node The node to show.
     */
    private scrollInto;
    /**
     * Focus the node before of after `currEl` depending on the given `direction`.
     * @param currEl Current element
     * @param direction Navigation direction.
     */
    private navigate;
    private findParent;
    private findHolderFromId;
    private findHolderFromData;
    private findHolderFromEvent;
    private findHolderFromElement;
    private findHolder;
    private children;
    private transformer;
    static ɵfac: i0.ɵɵFactoryDeclaration<TreeComponent<any>, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<TreeComponent<any>, "ui-tree", never, { "nodes": { "alias": "nodes"; "required": false; }; "adapter": { "alias": "adapter"; "required": false; }; }, {}, ["nodeDirective"], never, false, never>;
}