import { Group } from "../ui/view";
import { Panel } from "../ui/panel";
export declare abstract class ViewHolder {
    abstract build(root: Group): void;
}
export declare type Setter<M> = (state: M) => void;
export declare abstract class ViewModel<M extends Object, V extends ViewHolder> {
    private state;
    private viewHolder;
    constructor(obj: M, v: V);
    getState(): M;
    getViewHolder(): V;
    updateState(setter: Setter<M>): void;
    attach(view: Group): void;
    abstract onAttached(state: M, vh: V): void;
    abstract onBind(state: M, vh: V): void;
}
export declare type ClassType<T> = new (...args: any) => T;
export declare abstract class VMPanel<M extends Object, V extends ViewHolder> extends Panel {
    private vm?;
    private vh?;
    abstract getViewModelClass(): ClassType<ViewModel<M, V>>;
    abstract getState(): M;
    abstract getViewHolderClass(): ClassType<V>;
    getViewModel(): ViewModel<M, V> | undefined;
    build(root: Group): void;
}