import * as d3 from '../d3Modules';
import { Class_BaseElement, Class_ProtoElement } from '../Elements/Element';
import { Class_DrawingArea } from '../types/DrawingArea';
export declare class Class_Handler extends Class_BaseElement {
    private _size;
    private _color;
    private _filled;
    private _custom_class;
    private _ref_element;
    private _ref_element_optional?;
    private _custom_html_grp;
    protected _is_visible: boolean;
    constructor(id: string, drawing_area: Class_DrawingArea, ref: Class_ProtoElement, dragStart_function: (event: d3.D3DragEvent<SVGGElement, unknown, unknown>) => void, drag_function: (event: d3.D3DragEvent<SVGGElement, unknown, unknown>) => void, dragEnd_function: (event: d3.D3DragEvent<SVGGElement, unknown, unknown>) => void, options?: {
        class?: string;
        size?: number;
        color?: string;
        filled?: boolean;
    }, ref_optional?: Class_BaseElement, custom_parent_grp?: string);
    protected _copyFrom(element: Class_Handler): void;
    drawElement(): void;
    protected _draw(): void;
    protected _initDraw(): void;
    private sizeToUse;
    get is_visible(): boolean;
    get ref_element(): Class_ProtoElement;
    get ref_element_optional(): Class_BaseElement | undefined;
}