/// <reference types="leaf-ts" />
export declare class ListFocusBehavior<TItem extends Leaf.Widget, TFocusBy = TItem> {
    constructor(option: {
        list: Leaf.List<TItem> | (Leaf.List<TItem>[]);
        focus: (TItem) => void;
        blur: (TItem) => void;
        match?: (TItem, TFocusBy) => boolean;
    });
    events: Leaf.EventEmitter<{
        focus: TItem;
        blur: TItem;
        missing: TFocusBy;
    }>;
    private focus;
    private blur;
    private match;
    private lists;
    focusAt(target: TFocusBy): void;
    current: TItem;
    solve(todo: (events: this["events"]) => void): this;
}