import { ElementRef, EventEmitter, ChangeDetectorRef, QueryList, AfterViewInit, OnDestroy, OnInit, AfterContentInit } from '@angular/core';
import { FocusMonitor } from '@angular/cdk/a11y';
import { CanDisable, HasTabIndex } from '@dynatrace/ngx-groundhog/core';
import { UniqueSelectionDispatcher } from '@angular/cdk/collections';
/** Change event object emitted by GhRadioButton */
export interface GhRadioChange {
    source: GhRadioButton;
    value: any;
}
export declare class GhRadioGroup implements AfterContentInit, CanDisable {
    private _changeDetector;
    private _value;
    private _name;
    private _selected;
    private _disabled;
    private _required;
    private _isInitialized;
    /** Name of the radio button group. All radio buttons inside this group will use this name. */
    name: string;
    /** Value of the radio button. */
    value: any;
    /** Whether the radio button is selected. */
    selected: GhRadioButton | null;
    /** Whether the radio group is disabled */
    disabled: boolean;
    /** Whether the radio group is required */
    required: boolean;
    readonly change: EventEmitter<GhRadioChange>;
    onTouched: () => any;
    /** The method to be called in order to update ngModel */
    _controlValueAccessorChangeFn: (value: any) => void;
    _radios: QueryList<GhRadioButton>;
    constructor(_changeDetector: ChangeDetectorRef);
    ngAfterContentInit(): void;
    _checkSelectedRadioButton(): void;
    _touch(): void;
    /** Dispatch change event with current selection and group value. */
    _emitChangeEvent(): void;
    /** Implemented as a part of ControlValueAccessor. */
    writeValue(value: any): void;
    /** Implemented as a part of ControlValueAccessor. */
    registerOnChange(fn: (value: any) => void): void;
    /** Implemented as a part of ControlValueAccessor. */
    registerOnTouched(fn: any): void;
    /** Implemented as a part of ControlValueAccessor. */
    setDisabledState(isDisabled: boolean): void;
    private _markRadiosForCheck();
    /** Set the name of every radio button to the groups name */
    private _updateRadioButtonNames();
    /** Updates the `selected` state of each radio button based on the groups value. */
    private _updateSelectedRadioFromValue();
}
export declare class GhRadioButtonBase {
    disabled: boolean;
}
export declare const _GhRadioButtonMixinBase: (new (...args: any[]) => HasTabIndex) & typeof GhRadioButtonBase;
export declare class GhRadioButton extends _GhRadioButtonMixinBase implements OnInit, AfterViewInit, OnDestroy, CanDisable, HasTabIndex {
    private _elementRef;
    private _changeDetector;
    private _radioDispatcher;
    private _focusMonitor;
    private _radioGroup;
    private _uniqueId;
    private _required;
    private _checked;
    private _disabled;
    private _value;
    private _removeUniqueSelectionListener;
    /** The unique ID for the radio button. */
    id: string;
    /** Whether the radio button is required. */
    required: boolean;
    /** Whether the radio button is disabled. */
    disabled: boolean;
    /** Whether this radio button is checked. */
    checked: boolean;
    /** The value of this radio button. */
    value: any;
    /** Analog to HTML 'name' attribute used to group radios for unique selection. */
    name: string;
    /** Used to set the 'aria-label' attribute on the underlying input element. */
    ariaLabel: string;
    /** The 'aria-labelledby' attribute takes precedence as the element's text alternative. */
    ariaLabelledby: string;
    /** The 'aria-describedby' attribute is read after the element's label and field type. */
    ariaDescribedby: string;
    readonly change: EventEmitter<GhRadioChange>;
    /** ID of the native input element */
    readonly _inputId: string;
    /** The native radio input element */
    _inputElement: ElementRef;
    constructor(_elementRef: ElementRef, _changeDetector: ChangeDetectorRef, _radioDispatcher: UniqueSelectionDispatcher, _focusMonitor: FocusMonitor, _radioGroup: GhRadioGroup);
    ngOnInit(): void;
    ngAfterViewInit(): void;
    ngOnDestroy(): void;
    /** Focuses the radio button. */
    focus(): void;
    _onInputClick(event: Event): void;
    _onInputChange(event: Event): void;
    _markForCheck(): void;
    /** Dispatch change event with current value. */
    private _emitChangeEvent();
    private _onInputFocusChange(focusOrigin);
}