import type { CSSResultGroup } from 'lit';
import type { TerraFormControl } from '../../internal/terra-element.js';
import TerraElement from '../../internal/terra-element.js';
/**
 * @summary Switches allow the user to toggle an option on or off.
 * @documentation https://terra-ui.netlify.app/components/toggle
 * @status stable
 * @since 1.0
 *
 * @slot - The switch's label.
 * @slot help-text - Text that describes how to use the switch. Alternatively, you can use the `help-text` attribute.
 *
 * @event terra-blur - Emitted when the control loses focus.
 * @event terra-change - Emitted when the control's checked state changes.
 * @event terra-input - Emitted when the control receives input.
 * @event terra-focus - Emitted when the control gains focus.
 * @event terra-invalid - Emitted when the form control has been checked for validity and its constraints aren't satisfied.
 *
 * @csspart base - The component's base wrapper.
 * @csspart control - The control that houses the switch's thumb.
 * @csspart thumb - The switch's thumb.
 * @csspart label - The switch's label.
 * @csspart form-control-help-text - The help text's wrapper.
 *
 * @cssproperty --width - The width of the switch.
 * @cssproperty --height - The height of the switch.
 * @cssproperty --thumb-size - The size of the thumb.
 */
export default class TerraToggle extends TerraElement implements TerraFormControl {
    static styles: CSSResultGroup;
    private readonly formControlController;
    private readonly hasSlotController;
    input: HTMLInputElement;
    private hasFocus;
    title: string;
    /** The name of the switch, submitted as a name/value pair with form data. */
    name: string;
    /** The current value of the switch, submitted as a name/value pair with form data. */
    value: string;
    /** The switch's size. */
    size: 'small' | 'medium' | 'large';
    /** Disables the switch. */
    disabled: boolean;
    /** Draws the switch in a checked state. */
    checked: boolean;
    /** The default value of the form control. Primarily used for resetting the form control. */
    defaultChecked: boolean;
    /**
     * By default, form controls are associated with the nearest containing `<form>` element. This attribute allows you
     * to place the form control outside of a form and associate it with the form that has this `id`. The form must be in
     * the same document or shadow root for this to work.
     */
    form: string;
    /** Makes the switch a required field. */
    required: boolean;
    /** The switch's help text. If you need to display HTML, use the `help-text` slot instead. */
    helpText: string;
    /** Gets the validity state object */
    get validity(): ValidityState;
    /** Gets the validation message */
    get validationMessage(): string;
    firstUpdated(): void;
    private handleBlur;
    private handleInput;
    private handleInvalid;
    private handleClick;
    private handleFocus;
    private handleKeyDown;
    handleCheckedChange(): void;
    handleDisabledChange(): void;
    /** Simulates a click on the switch. */
    click(): void;
    /** Sets focus on the switch. */
    focus(options?: FocusOptions): void;
    /** Removes focus from the switch. */
    blur(): void;
    /** Checks for validity but does not show a validation message. Returns `true` when valid and `false` when invalid. */
    checkValidity(): boolean;
    /** Gets the associated form, if one exists. */
    getForm(): HTMLFormElement | null;
    /** Checks for validity and shows the browser's validation message if the control is invalid. */
    reportValidity(): boolean;
    /** Sets a custom validation message. Pass an empty string to restore validity. */
    setCustomValidity(message: string): void;
    render(): import("lit-html").TemplateResult<1>;
}
declare global {
    interface HTMLElementTagNameMap {
        'terra-toggle': TerraToggle;
    }
}