export declare class Tree {
    jsonStr: string;
    root: Node;
    history: number[];
    rootElement: HTMLElement;
    summaryElement: Summary;
    static create(url: string, result: HTMLElement, error?: HTMLElement): void;
    loadJson(url: string): Promise<string>;
    protected _loadJson(json: string, resolve: Function, reject: Function): void;
    fromJson(): void;
    toHTML(node: HTMLElement): void;
    summary(node: Node): void;
}
export declare class DepthFirst {
    private func;
    result: any[];
    constructor(tree: Tree, func: Function);
    private visit;
}
export declare abstract class Node {
    content: string;
    title: string;
    value: number;
    protected static counter: number;
    protected static labelCounter: number;
    kind: string;
    tree: Tree;
    nextName: string;
    previousName: string;
    labels: Map<number, string>;
    children: Map<number, Node>;
    parent: Node;
    variable: string;
    card: Card;
    radioButtons: HTMLElement[];
    constructor(content: string, title?: string, value?: number, labels?: {
        text: string;
        value: number;
    }[]);
    private static parseChildren;
    static fromJson(json: any): Node;
    toHtml(): HTMLElement;
    protected radios(): void;
    protected buttons(): void;
    protected fireNext(): void;
    protected firePrevious(): void;
    show(): void;
    hide(): void;
}
export declare class Binary extends Node {
    content: string;
    title: string;
    value: number;
    kind: string;
    constructor(content: string, title: string, value?: number);
}
export declare class Nary extends Node {
    kind: string;
}
export declare class Leaf extends Node {
    action: string;
    kind: string;
    nextName: string;
    summaryButton: HTMLElement;
    actionButton: HTMLElement;
    constructor(content: string, title: string, value: number, action?: string);
    protected buttons(): void;
    protected fireAction(): void;
    protected fireSummary(): void;
    protected fireNext(): void;
}
export declare class Summary extends Node {
    kind: string;
    nextName: string;
    summaryElement: HTMLElement;
    constructor();
    protected fireNext(): void;
    show(): void;
    private compileSummary;
    private makeSummaryLine;
}
export declare class Card {
    div: HTMLElement;
    title: HTMLElement;
    content: HTMLElement;
    buttons: HTMLElement;
    constructor();
    show(): void;
    hide(): void;
}