import { ObjectManager } from "../../ObjectManager";
import { Field, type FieldBaseProperties } from "./Field";
import { type PdfPage } from "../PdfPage";
import { type WidgetAnnotation, type WidgetProperties } from "../Annotations/WidgetAnnotation";
import { type Rect } from "../../Types";
import { CheckStyle } from "../../Enums";
import { BorderStyle } from "../../Enums";
/**
 * Defines properties of a {@link RadioButtonField}.
 */
export type RadioButtonFieldProperties = FieldBaseProperties & {
    type: "radiobutton";
    /**
     * The style of check mark.
     *
     * Note: the 'checkStyle' specified for individual widgets in the 'widgets' property
     * takes precedence and will override this property.
     */
    checkStyle?: CheckStyle;
    /**
     * Contains widget objects that represent the selectable options for this radio button.
     *
     * Each widget in this list corresponds to one choice in the radio button group,
     * typically displaying with a distinct visual appearance when selected vs. unselected.
     */
    widgets?: (WidgetAnnotation | WidgetProperties)[];
    /**
     * Indicating whether a group of radio buttons within a radio button field
     * that use the same value for the on state will turn on and off in unison;
     * that is if one is checked, they are all checked.
     * If clear, the buttons are mutually exclusive (the same behavior as HTML radio buttons).
     */
    radiosInUnison?: boolean;
};
/**
 * Represents group of radio buttons.
 */
export declare class RadioButtonField extends Field {
    /**
     * Creates a new {@link RadioButtonField}.
     *
     * @param om - {@link ObjectManager} that controls the lifetime of the {@link RadioButtonField}.
     */
    constructor(om: ObjectManager);
    /**
     * Creates a new {@link RadioButtonField}.
     */
    constructor();
    /**
     * Gets or sets an array of strings containing one entry for each widget annotation,
     * defining export values for its constituent radio buttons.
     * See the PDF spec for details.
     */
    get opt(): string[] | null;
    /**
     * Gets or sets an array of strings containing one entry for each widget annotation,
     * defining export values for its constituent radio buttons.
     * See the PDF spec for details.
     */
    set opt(value: string[] | null);
    /**
     * Gets or sets a value indicating whether a group of radio buttons within a radio button field
     * that use the same value for the on state will turn on and off in unison;
     * that is if one is checked, they are all checked.
     * If clear, the buttons are mutually exclusive (the same behavior as HTML radio buttons).
     */
    get radiosInUnison(): boolean;
    /**
     * Gets or sets a value indicating whether a group of radio buttons within a radio button field
     * that use the same value for the on state will turn on and off in unison;
     * that is if one is checked, they are all checked.
     * If clear, the buttons are mutually exclusive (the same behavior as HTML radio buttons).
     */
    set radiosInUnison(value: boolean);
    /**
     * Creates a new {@link WidgetAnnotation} and adds it to the {@link Field#widgets} collection.
     *
     * @param page - The page on which the new {@link WidgetAnnotation} will be placed.
     * @param bounds - The bounds of the new {@link WidgetAnnotation} on "page".
     * @param checkStyle - The check mark style.
     * @param borderStyle - The border style.
     * @returns Returns the created {@link WidgetAnnotation} object.
     */
    addItem(page: PdfPage, bounds: Rect, checkStyle?: CheckStyle, borderStyle?: BorderStyle): WidgetAnnotation;
}