import { AfterViewInit, OnInit } from '@angular/core';
import { QuestionComponent } from '../question.component';
import { QuestionBase } from '../../domain/question.base';
import { FormGroup } from '@angular/forms';
import { ScrollService } from '../scroll.service';
export declare class ButtonGroupQuestionComponent extends QuestionComponent implements OnInit, AfterViewInit {
    private scrollService;
    form: FormGroup;
    question: QuestionBase<any>;
    input: any;
    type: string;
    valueWhenDisabled: any;
    constructor(scrollService: ScrollService);
    /**
     * Initialise the default form values.
     */
    ngOnInit(): void;
    ngAfterViewInit(): void;
    readonly optionsPopulated: boolean;
    readonly isInvalid: boolean;
    readonly show: boolean;
    readonly alert: any;
    readonly formValue: any;
    /**
     * Enable or disable any fields that need updating based on the value selected.
     * We temporarily store any values when disabling.
     * We restore any previously set values when enabling.
     * If no previously set value, then mark field as untouched to avoid form error on changes.
     * @param value
     */
    updateDependantFields(value: any): void;
    getButtonClass(opt: any): "btn-primary" | "btn-default";
}