import { EnumFactoryBase } from 'lite-ts';
import { IValueObserver } from './i-observer';
import { ValueHandlerContext } from './handler-context';
import { ValueTypeData } from './type-data';
import { ValueTypeDataHandlerBase } from './type-data-handler-base';
export declare class SubjectValueHandler extends ValueTypeDataHandlerBase {
    private m_IsValidPredicate;
    static ctor: string;
    private m_Observers;
    constructor(m_IsValidPredicate: (observer: any) => boolean, enumFactory: EnumFactoryBase);
    addObserver(observer: IValueObserver): void;
    removeObserver(observer: IValueObserver): void;
    protected getValueTypeFieldValue(valueTypeItem: ValueTypeData): ValueTypeData;
    protected onHandle(ctx: ValueHandlerContext, valueTypeItem: ValueTypeData): Promise<true>;
}