import { BzStepComponent } from "./stepper.component";
export declare class BzStepperService {
    private _stepperList;
    private _activeStepIndex;
    set stepperList(value: BzStepComponent[]);
    get stepperList(): BzStepComponent[];
    set activeStepIndex(value: number);
    get activeStepIndex(): number;
    /**
     * Navigate to next step.
     *
     * @author Federico Gambardella<fedega86@libero.it>
     * @return {void}
     */
    nextStep(): void;
    /**
     * Navigates to prev step.
     *
     * @author Federico Gambardella<fedega86@libero.it>
     * @return {void}
     */
    prevStep(): void;
    /**
  * Set complited step.
  *
  * @author Federico Gambardella<fedega86@libero.it>
  * @param {StepComponent} step
  */
    setComplited(step: BzStepComponent): void;
    /**
     * Selects active step.
     *
     * @author Federico Gambardella<fedega86@libero.it>
     * @param {StepComponent} step
     * @param {number} index
     * @return {void}
     */
    selectStep(step: BzStepComponent, index: number): void;
    /**
   * Check if is a valid step.
   *
   * @author Federico Gambardella<fedega86@libero.it>
   * @param {StepComponent} step
   * @returns {boolean}
   */
    isValidStep(step: BzStepComponent): boolean;
}