import { DBaseStateSet } from "./d-base-state-set";
import { DBaseStateSetImpl } from "./d-base-state-set-impl";
export type DBaseStateSetImplObservableOnChange = (newState: DBaseStateSet, oldState: DBaseStateSet) => void;
export declare class DBaseStateSetImplObservable extends DBaseStateSetImpl {
    protected _onChange: DBaseStateSetImplObservableOnChange;
    protected _isLocked: number;
    protected _isSaved: boolean;
    protected _doSave: boolean;
    protected _saved?: DBaseStateSetImpl;
    constructor(onChange: DBaseStateSetImplObservableOnChange);
    lock(callOnChange?: boolean): this;
    unlock(): this;
    protected get saved(): DBaseStateSetImpl;
    protected begin(): this;
    protected end(): this;
    protected onChange(newState: DBaseStateSet, oldState: DBaseStateSet): void;
}