import { Renderer2, ElementRef } from '@angular/core';
import { AvBase } from '../shared/base';
import { ControlValueAccessor } from '@angular/forms';
import { AvCheckboxGroupService } from '../checkbox/checkbox-group.service';
export declare class AvButtonGroupComponent extends AvBase implements ControlValueAccessor {
    private buttonGroupService;
    private _selectedValue;
    private _multiple;
    get multiple(): boolean;
    set multiple(newValue: boolean);
    propagateChange: (_: any) => void;
    constructor(_renderer: Renderer2, _element: ElementRef, buttonGroupService: AvCheckboxGroupService);
    writeValue(value: any): void;
    registerOnChange(fn: any): void;
    registerOnTouched(fn: any): void;
}