import { ModeExtensionBase } from '../ModeExtensionBase';
/**
 * General mode extension. Used for common model view state. Does not have any specific options.
 */
export declare class GeneralModeExtension extends ModeExtensionBase<any> {
    static getName: () => string;
    /**
     * @param viewerName - Owner viewer name.
     * @param options - additional options for extension.
     */
    constructor(viewerName: string, options: {
        saveTooltipStateHandler?: Function;
        restoreTooltipStateHandler?: Function;
    });
    tooltipRender(container: HTMLElement): void;
    added(): void;
    deleted(): void;
    selected(): void;
    unselected(): void;
    setup(): void;
}