import type Gtk from "gi://Gtk";
import type { GjsContext } from "../../../reconciler/gjs-renderer";
import type { HostContext } from "../../../reconciler/host-context";
import { BaseElement, type GjsElement } from "../../gjs-element";
import { ElementLifecycleController } from "../../utils/element-extenders/element-lifecycle-controller";
import type { DiffedProps } from "../../utils/element-extenders/map-properties";
import type { TextNode } from "../text-node";
export interface ICustomWidget<P extends object> {
    /**
     * Should return a Gtk Widget that can be attached to a Container
     * and displayed.
     *
     * The root widget should not have any parent set.
     */
    getRootWidget(): Gtk.Widget;
    /**
     * This function ic called whenever any of the props passed to
     * <CustomWidget> changes.
     *
     * @param props Dictionary containing props that have changed since
     *   last update.
     */
    updateProps(props: Partial<P>): void;
    /**
     * This function is called when the CustomWidget is removed from the
     * React tree. Any cleanup should be done here, including destroying
     * the root widget.
     */
    unmount(): void;
}
export type CustomWidgetProps<P extends object> = P & {
    widget: new (props: P) => ICustomWidget<P>;
};
export declare class CustomWidgetElement extends BaseElement implements GjsElement<"CUSTOM_WIDGET", Gtk.Widget> {
    static getContext(currentContext: HostContext<GjsContext>): HostContext<GjsContext>;
    readonly kind = "CUSTOM_WIDGET";
    readonly customWidget: ICustomWidget<any>;
    protected readonly widget: Gtk.Widget;
    protected parent: GjsElement | null;
    protected readonly lifecycle: ElementLifecycleController;
    protected handlers: null;
    protected propsMapper: null;
    protected currentProps: Record<string, any>;
    constructor(props: DiffedProps);
    getCustomWidget<CW extends ICustomWidget<any>>(): CW;
    updateProps(props: DiffedProps): void;
    appendChild(child: GjsElement | TextNode): void;
    insertBefore(newChild: GjsElement | TextNode, beforeChild: GjsElement): void;
    remove(parent: GjsElement): void;
    render(): void;
    notifyWillMountTo(parent: GjsElement): boolean;
    notifyMounted(): void;
    notifyChildWillUnmount(child: GjsElement): void;
    show(): void;
    hide(): void;
    getWidget(): Gtk.Widget;
    getParentElement(): GjsElement<keyof Rg.GjsElementTypeRegistry, Gtk.Widget> | null;
    addEventListener(signal: string, callback: Rg.GjsElementEventListenerCallback): void;
    removeEventListener(signal: string, callback: Rg.GjsElementEventListenerCallback): void;
}