import { ElementType } from '../types';
import * as i0 from "@angular/core";
export interface EndpointHandle {
    elementId: string;
    end: 'start' | 'end';
    x: number;
    y: number;
    bound: boolean;
    elementType: ElementType;
}
export interface CurveHandle {
    elementId: string;
    x: number;
    y: number;
    isCurved: boolean;
}
export declare class HandleService {
    private readonly selectionService;
    private readonly apiService;
    /** True when only line-type elements (Arrow, Line) are selected */
    readonly isLineOnlySelection: import("@angular/core").Signal<boolean>;
    /**
     * Endpoint handles for all selected line-type elements (Arrow / Line).
     * Each entry describes one endpoint in world coordinates.
     */
    readonly lineEndpointHandles: import("@angular/core").Signal<EndpointHandle[]>;
    /**
     * Middle curve handle for selected arrows.
     * Provides a draggable control point for adjusting the curve.
     */
    readonly curveHandles: import("@angular/core").Signal<CurveHandle[]>;
    static ɵfac: i0.ɵɵFactoryDeclaration<HandleService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<HandleService>;
}