/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
import { FocusMonitor } from '@angular/cdk/a11y';
import { ChangeDetectorRef, ElementRef, EventEmitter, NgZone, OnDestroy, AfterViewChecked } from '@angular/core';
import { ControlValueAccessor } from '@angular/forms';
import { CanColor, CanColorCtor, CanDisable, CanDisableCtor, CanDisableRipple, CanDisableRippleCtor, HasTabIndex, HasTabIndexCtor, MatRipple } from '@angular/material/core';
import { MatCheckboxClickAction } from './checkbox-config';
/**
 * Provider Expression that allows mat-checkbox to register as a ControlValueAccessor.
 * This allows it to support [(ngModel)].
 * @docs-private
 */
export declare const MAT_CHECKBOX_CONTROL_VALUE_ACCESSOR: any;
/**
 * Represents the different states that require custom transitions between them.
 * @docs-private
 */
export declare enum TransitionCheckState {
    /** The initial state of the component before any user interaction. */
    Init = 0,
    /** The state representing the component when it's becoming checked. */
    Checked = 1,
    /** The state representing the component when it's becoming unchecked. */
    Unchecked = 2,
    /** The state representing the component when it's becoming indeterminate. */
    Indeterminate = 3
}
/** Change event object emitted by MatCheckbox. */
export declare class MatCheckboxChange {
    /** The source MatCheckbox of the event. */
    source: MatCheckbox;
    /** The new `checked` value of the checkbox. */
    checked: boolean;
}
/** @docs-private */
export declare class MatCheckboxBase {
    _elementRef: ElementRef;
    constructor(_elementRef: ElementRef);
}
export declare const _MatCheckboxMixinBase: HasTabIndexCtor & CanColorCtor & CanDisableRippleCtor & CanDisableCtor & typeof MatCheckboxBase;
/**
 * A material design checkbox component. Supports all of the functionality of an HTML5 checkbox,
 * and exposes a similar API. A MatCheckbox can be either checked, unchecked, indeterminate, or
 * disabled. Note that all additional accessibility attributes are taken care of by the component,
 * so there is no need to provide them yourself. However, if you want to omit a label and still
 * have the checkbox be accessible, you may supply an [aria-label] input.
 * See: https://material.io/design/components/selection-controls.html
 */
export declare class MatCheckbox extends _MatCheckboxMixinBase implements ControlValueAccessor, AfterViewChecked, OnDestroy, CanColor, CanDisable, HasTabIndex, CanDisableRipple {
    private _changeDetectorRef;
    private _focusMonitor;
    private _ngZone;
    private _clickAction;
    _animationMode?: string | undefined;
    /**
     * Attached to the aria-label attribute of the host element. In most cases, arial-labelledby will
     * take precedence so this may be omitted.
     */
    ariaLabel: string;
    /**
     * Users can specify the `aria-labelledby` attribute which will be forwarded to the input element
     */
    ariaLabelledby: string | null;
    private _uniqueId;
    /** A unique id for the checkbox input. If none is supplied, it will be auto-generated. */
    id: string;
    /** Returns the unique id for the visual hidden input. */
    readonly inputId: string;
    /** Whether the checkbox is required. */
    required: boolean;
    private _required;
    /** Whether the label should appear after or before the checkbox. Defaults to 'after' */
    labelPosition: 'before' | 'after';
    /** Name value will be applied to the input element if present */
    name: string | null;
    /** Event emitted when the checkbox's `checked` value changes. */
    readonly change: EventEmitter<MatCheckboxChange>;
    /** Event emitted when the checkbox's `indeterminate` value changes. */
    readonly indeterminateChange: EventEmitter<boolean>;
    /** The value attribute of the native input element */
    value: string;
    /** The native `<input type="checkbox">` element */
    _inputElement: ElementRef<HTMLInputElement>;
    /** Reference to the ripple instance of the checkbox. */
    ripple: MatRipple;
    /**
     * Called when the checkbox is blurred. Needed to properly implement ControlValueAccessor.
     * @docs-private
     */
    _onTouched: () => any;
    private _currentAnimationClass;
    private _currentCheckState;
    private _controlValueAccessorChangeFn;
    constructor(elementRef: ElementRef<HTMLElement>, _changeDetectorRef: ChangeDetectorRef, _focusMonitor: FocusMonitor, _ngZone: NgZone, tabIndex: string, _clickAction: MatCheckboxClickAction, _animationMode?: string | undefined);
    ngAfterViewChecked(): void;
    ngOnDestroy(): void;
    /**
     * Whether the checkbox is checked.
     */
    checked: boolean;
    private _checked;
    /**
     * Whether the checkbox is disabled. This fully overrides the implementation provided by
     * mixinDisabled, but the mixin is still required because mixinTabIndex requires it.
     */
    disabled: any;
    private _disabled;
    /**
     * Whether the checkbox is indeterminate. This is also known as "mixed" mode and can be used to
     * represent a checkbox with three states, e.g. a checkbox that represents a nested list of
     * checkable items. Note that whenever checkbox is manually clicked, indeterminate is immediately
     * set to false.
     */
    indeterminate: boolean;
    private _indeterminate;
    _isRippleDisabled(): any;
    /** Method being called whenever the label text changes. */
    _onLabelTextChange(): void;
    writeValue(value: any): void;
    registerOnChange(fn: (value: any) => void): void;
    registerOnTouched(fn: any): void;
    setDisabledState(isDisabled: boolean): void;
    _getAriaChecked(): 'true' | 'false' | 'mixed';
    private _transitionCheckState;
    private _emitChangeEvent;
    /** Toggles the `checked` state of the checkbox. */
    toggle(): void;
    /**
     * Event handler for checkbox input element.
     * Toggles checked state if element is not disabled.
     * Do not toggle on (change) event since IE doesn't fire change event when
     *   indeterminate checkbox is clicked.
     * @param event
     */
    _onInputClick(event: Event): void;
    /** Focuses the checkbox. */
    focus(): void;
    _onInteractionEvent(event: Event): void;
    private _getAnimationClassForCheckStateTransition;
    /**
     * Calculate the radius for the ripple based on the ripple elements width.  Only calculated once
     * for the application.
     */
    private _calculateRippleRadius;
}
