import { type OutputEmitterRef, type Signal } from '@angular/core';
import { type DfDataConnection } from '../../../ng-draw-flow.interfaces';
import * as i0 from "@angular/core";
export declare class ConnectionComponent {
    private readonly drawFlowElement;
    private readonly connectionsService;
    private readonly coordinatesService;
    private readonly store;
    private readonly options;
    private readonly interactionState;
    private readonly arrowhead;
    private readonly arrowWidth;
    private readonly arrowHeight;
    private readonly pathWithLabel;
    protected selected: boolean;
    protected readonly arrowMarkerWidth: number;
    protected readonly arrowMarkerHeight: number;
    protected readonly arrowViewBox: string;
    protected readonly arrowPoints: string;
    protected readonly arrowClosedPoints: string;
    protected readonly markerEnd: string | null;
    protected readonly path: Signal<string>;
    protected readonly labelPosition: Signal<{
        x: number;
        y: number;
    }>;
    protected readonly optimization: Signal<boolean>;
    protected readonly selectedNodeInput: Signal<boolean>;
    protected readonly selectedNodeOutput: Signal<boolean>;
    readonly connectionDeleted: OutputEmitterRef<void>;
    readonly connectionSelected: OutputEmitterRef<void>;
    readonly connectionInput: import("@angular/core").InputSignal<DfDataConnection>;
    get connection(): DfDataConnection;
    get deletable(): boolean;
    protected handleKeyboardEvent(event: KeyboardEvent): void;
    protected onSelectedChanged(selected: boolean): void;
    private getConnectionPoint;
    static ɵfac: i0.ɵɵFactoryDeclaration<ConnectionComponent, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<ConnectionComponent, "df-connection", never, { "connectionInput": { "alias": "connection"; "required": true; "isSignal": true; }; }, { "connectionDeleted": "connectionDeleted"; "connectionSelected": "connectionSelected"; }, never, never, true, never>;
}