export declare class AdvancedSearchParams {
    generateGravsearch: (offset: number) => string | boolean;
    /**
     *
     * @param generateGravsearch a function that generates a Gravsearch query.
     *
     * The function takes the offset
     * as a parameter and returns a Gravsearch query string.
     * Returns false if not set correctly (init state).
     */
    constructor(generateGravsearch: (offset: number) => string | boolean);
}
export declare class AdvancedSearchParamsService {
    private _currentSearchParams;
    constructor();
    /**
     * Updates the parameters of an advanced search.
     *
     * @param searchParams new advanced search params.
     */
    changeSearchParamsMsg(searchParams: AdvancedSearchParams): void;
    /**
     * Gets the search params of an advanced search.
     *
     */
    getSearchParams(): AdvancedSearchParams;
}