/**
 * @license
 * Copyright 2024 Nuraly, Laabidi Aymen
 * SPDX-License-Identifier: MIT
 */
import { ReactiveControllerHost } from 'lit';
import { BaseCanvasController } from './base.controller.js';
import { CanvasHost } from '../interfaces/index.js';
import { WorkflowNode, WorkflowEdge, Position } from '../workflow-canvas.types.js';
import type { UndoController } from './undo.controller.js';
/**
 * Clipboard data format for workflow nodes and edges
 */
export interface ClipboardData {
    type: 'nuraly-workflow-nodes';
    version: string;
    nodes: WorkflowNode[];
    edges: WorkflowEdge[];
    copyOrigin: Position;
}
/**
 * Extended canvas host interface for clipboard controller
 */
export interface ClipboardHost extends CanvasHost {
    /** Last mouse position on canvas for paste positioning */
    lastMousePosition: Position | null;
}
/**
 * Controller for clipboard operations (copy, cut, paste)
 * Supports both internal clipboard and system clipboard with JSON serialization
 */
export declare class ClipboardController extends BaseCanvasController<ClipboardHost & ReactiveControllerHost> {
    private undoController;
    /** Internal clipboard for fallback when system clipboard is unavailable */
    private internalClipboard;
    /**
     * Set the undo controller (called after initialization)
     */
    setUndoController(controller: UndoController): void;
    /**
     * Copy selected nodes and their connecting edges to clipboard
     */
    copySelected(): Promise<boolean>;
    /**
     * Cut selected nodes (copy + delete)
     */
    cutSelected(): Promise<boolean>;
    /**
     * Paste nodes from clipboard
     * @param position Optional position to paste at. If not provided, uses mouse position or canvas center.
     */
    pasteFromClipboard(position?: Position): Promise<boolean>;
    /**
     * Check if there's content available to paste
     */
    hasClipboardContent(): Promise<boolean>;
    /**
     * Serialize the current selection to clipboard data format
     */
    private serializeSelection;
    /**
     * Parse clipboard text into ClipboardData
     * Supports both Nuraly format and raw workflow JSON
     */
    private parseClipboardData;
    /**
     * Calculate the center position of a selection of nodes
     */
    private calculateSelectionCenter;
    /**
     * Get the position to paste at
     * Uses mouse position if available, otherwise offsets from copy origin
     */
    private getPastePosition;
    /**
     * Delete selected nodes and their connected edges
     */
    private deleteSelected;
}
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