import { type DfDataConnection } from '../../ng-draw-flow.interfaces';
import * as i0 from "@angular/core";
export declare class ConnectionsService {
    private readonly connectionsSignal;
    private readonly usedConnectorsSignal;
    private readonly selectedNodeIdSignal;
    private readonly connectionsChangedSubject;
    readonly connections: import("@angular/core").Signal<DfDataConnection[]>;
    readonly usedConnectors: import("@angular/core").Signal<string[]>;
    readonly selectedNodeId: import("@angular/core").Signal<string | null>;
    readonly connections$: import("rxjs").Observable<DfDataConnection[]>;
    readonly usedConnectors$: import("rxjs").Observable<string[]>;
    readonly selectedNodeId$: import("rxjs").Observable<string | null>;
    /** Emits synchronous, user-originated connection changes. */
    readonly connectionsChanged$: import("rxjs").Observable<DfDataConnection[]>;
    setConnections(connections: DfDataConnection[]): void;
    addConnections(connections: DfDataConnection[]): void;
    removeConnection(connectionToRemove: DfDataConnection): void;
    removeConnectionsByNodeId(id: string): void;
    removeConnectionsByConnectorId(connectorIdToRemove: string): void;
    highlightConnectionsForNode(nodeId: string | null): void;
    private areConnectionsEqual;
    private collectUsedConnectors;
    private commitUserChange;
    static ɵfac: i0.ɵɵFactoryDeclaration<ConnectionsService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<ConnectionsService>;
}