import { Subject } from 'rxjs';
import { ChemicalElement } from './interface';
export declare class MtaPeriodicTableService {
    selectedElements: any[];
    currentElement: any;
    elementChange$: Subject<{}>;
    maxElLength: number;
    canSelectElements: string[];
    constructor();
    change(e: ChemicalElement): void;
    isSelected(e: ChemicalElement): boolean;
    reset(): void;
    setMaxLength(maxSelect: number): void;
    setCanSelectElements(elements: string[]): void;
}