import { AfterContentInit, ChangeDetectorRef, ElementRef, EventEmitter, QueryList } from '@angular/core';
import { ControlValueAccessor } from '@angular/forms';
import { MdcRadio, MdcRadioChange } from './radio';
/**
 * Provider Expression that allows mdc-radio-group to register as a ControlValueAccessor. This
 * allows it to support [(ngModel)] and ngControl.
 */
export declare const MDC_RADIO_GROUP_CONTROL_VALUE_ACCESSOR: any;
export declare class MdcRadioGroup implements AfterContentInit, ControlValueAccessor {
    private _changeDetectorRef;
    elementRef: ElementRef<HTMLElement>;
    private _name;
    /** Selected value for the radio group. */
    private _value;
    /** Whether the `value` has been set to its initial value. */
    private _isInitialized;
    _radios: QueryList<MdcRadio>;
    /** Name of the radio button group. All radio buttons inside this group will use this name. */
    get name(): string;
    set name(value: string);
    /**
     * Value for the radio-group. Should equal the value of the selected radio button if there is
     * a corresponding radio button with a matching value. If there is not such a corresponding
     * radio button, this value persists to be applied in case a new radio button is added with a
     * matching value.
     */
    get value(): any;
    set value(newValue: any);
    /**
     * The currently selected radio button. If set to a new radio button, the radio group value
     * will be updated to match the new selected button.
     */
    get selected(): MdcRadio | null;
    set selected(selected: MdcRadio | null);
    private _selected;
    get required(): boolean;
    set required(value: boolean);
    private _required;
    get disabled(): boolean;
    set disabled(value: boolean);
    private _disabled;
    _checkSelectedRadioButton(): void;
    /** The method to be called in order to update ngModel */
    _controlValueAccessorChangeFn: (value: any) => void;
    /** onTouch function registered via registerOnTouch (ControlValueAccessor). */
    onTouched: () => any;
    readonly change: EventEmitter<MdcRadioChange>;
    constructor(_changeDetectorRef: ChangeDetectorRef, elementRef: ElementRef<HTMLElement>);
    ngAfterContentInit(): void;
    _touch(): void;
    private _updateRadioButtonNames;
    /** Updates the `selected` radio button from the internal _value state. */
    private _updateSelectedRadioFromValue;
    private _markRadiosForCheck;
    private _updateDisableRadioState;
    /** Sets the model value. Implemented as part of ControlValueAccessor. */
    writeValue(value: any): void;
    /**
     * Registers a callback to be triggered when the model value changes.
     * Implemented as part of ControlValueAccessor.
     * @param fn Callback to be registered.
     */
    registerOnChange(fn: (value: any) => void): void;
    /**
     * Registers a callback to be triggered when the control is touched.
     * Implemented as part of ControlValueAccessor.
     * @param fn Callback to be registered.
     */
    registerOnTouched(fn: any): void;
    /**
     * Sets the disabled state of the control. Implemented as a part of ControlValueAccessor.
     * @param isDisabled Whether the control should be disabled.
     */
    setDisabledState(isDisabled: boolean): void;
    /** Dispatch change event with current selection and group value. */
    emitChangeEvent(): void;
}