/**
 * @license
 * Copyright 2024 Nuraly, Laabidi Aymen
 * SPDX-License-Identifier: MIT
 */
import { ReactiveControllerHost } from 'lit';
import { BaseCanvasController } from './base.controller.js';
import { CanvasHost, DragState } from '../interfaces/index.js';
import { WorkflowNode } from '../workflow-canvas.types.js';
import { ViewportController } from './viewport.controller.js';
import type { UndoController } from './undo.controller.js';
import type { FrameController } from './frame.controller.js';
/**
 * Controller for managing node dragging
 */
export declare class DragController extends BaseCanvasController {
    private viewportController;
    private undoController;
    private frameController;
    private dragStartPositions;
    private frameContainedNodeIds;
    constructor(host: CanvasHost & ReactiveControllerHost, viewportController: ViewportController);
    /**
     * Set the undo controller (called after initialization)
     */
    setUndoController(controller: UndoController): void;
    /**
     * Set the frame controller (called after initialization)
     */
    setFrameController(controller: FrameController): void;
    /**
     * Start dragging a node
     */
    startDrag(node: WorkflowNode, event: MouseEvent): void;
    /**
     * Handle node drag movement
     */
    handleDrag(event: MouseEvent): void;
    /**
     * Stop dragging
     */
    stopDrag(): void;
    /**
     * Check if currently dragging
     */
    isDragging(): boolean;
    /**
     * Get current drag state
     */
    getDragState(): DragState | null;
    /**
     * Get the node being dragged
     */
    getDraggedNodeId(): string | null;
}
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