import { ControlValueAccessor } from '@angular/forms';
/**
 * This Component displays questions one after an other.
 * The only possible answers are yes or no.
 * After the last question, a templatable screen is diplayed.
 *
 * @example
 * <mv-yes-no-list [(ngModel)]="answers" [question]="question" [itemsList]="itemsList" name="answers">
 */
export declare class YesNoListComponent implements ControlValueAccessor {
    /**
     * Model where are stored the answers
     */
    _answers: Object;
    /**
     * Main question displayed
     */
    question: string;
    /**
     * Callback called on last question reached
     */
    callback: Function;
    /**
     * Subquestions/propositions provided as an array
     */
    itemsList: any;
    answers: Object;
    /**
     * Subquestions/propositions stored ordered by their "orderInGroup"
     */
    sortedItemsList: any[];
    /**
     * ID of the current displayed item
     */
    currentItem: number;
    /**
     * Percentage of the questionary reached
     */
    progress: string;
    /**
     * Constructor of the components,
     * set the current item to 0
     */
    constructor();
    private resolveCurrentItem();
    /**
     * Increment the progress bar until the last item is clicked,
     * Then, increments currentItem if it's not the last one, or execute the callback.
     */
    nextItem(): void;
    /**
     * Saves the answer to the current question as a yes.
     * Then, call the nextItem method.
     */
    answerYes(): void;
    /**
     * Saves the answer to the current question as a no.
     * Then, call the nextItem method.
     */
    answerNo(): void;
    /**
     * This method is part of ControlValueAccessor interface.
     * Its role is to set value from the model to the DOM
     *
     * @param value Value given from the model
     */
    writeValue(value: any): void;
    /**
     * This method is part of ControlValueAccessor interface.
     * Its role is to set the function that will propagate changes from the DOM to the model.
     *
     * @param fn {function} Angular internal function
     */
    registerOnChange(fn: any): void;
    /**
     * This method is part of ControlValueAccessor interface.
     * Not used here
     */
    registerOnTouched(): void;
    /**
     * Container for the propagation function.
     */
    propagateChange: (_: any) => void;
}