import { BaseConnectionDragHandler } from './base-connection.drag-handler';
import { FConnectionBase } from '../../../f-connection';
import { IPoint } from '@foblex/2d';
import { Injector } from '@angular/core';
export declare class SourceTargetConnectionDragHandler extends BaseConnectionDragHandler {
    private readonly _callTracker;
    constructor(injector: Injector, fConnection: FConnectionBase);
    setSourceDifference(difference: IPoint): void;
    setTargetDifference(difference: IPoint): void;
    private _checkAndTriggerAction;
}