import { QuestionBase } from './question.base';
import { Reply } from '../../reply';
import { DependencyCondtionItem, Dependency, DependencyCondtionList } from './dependency.types';
export declare class QuestionDependency implements Dependency {
    private question;
    id: string;
    conditions: DependencyCondtionList;
    readonly onContentUpdate: import("rxjs/internal/Observable").Observable<import("@schoolbelle/common/object-change-tracker/lib/object-change-tracker").ContentUPdateEvent>;
    constructor(question: QuestionBase);
    hasCondition(condition: DependencyCondtionItem): boolean;
    toggleCondition(condition: DependencyCondtionItem): void;
    /**
     *
     * @param reply
     * checks if this question has a dependency and if it does, see if reply meets conditions about parent question
     */
    meetConditions(reply: Reply): boolean;
}