/**
 * @license
 * Copyright 2024 Nuraly, Laabidi Aymen
 * SPDX-License-Identifier: MIT
 */
import { ReactiveControllerHost } from 'lit';
import { CanvasHost, CanvasBaseController, ErrorHandler } from '../interfaces/index.js';
import { BaseComponentController } from '@nuralyui/common/controllers';
/**
 * Abstract base controller class that implements common functionality
 * for all canvas component controllers.
 *
 * @typeParam THost - The canvas host type. Defaults to CanvasHost & ReactiveControllerHost.
 *   Subclasses with extended host interfaces can specify a narrower type.
 */
export declare abstract class BaseCanvasController<THost extends CanvasHost & ReactiveControllerHost = CanvasHost & ReactiveControllerHost> extends BaseComponentController<THost> implements CanvasBaseController, ErrorHandler {
    /**
     * Helper to get canvas wrapper element
     */
    protected get canvasWrapper(): HTMLElement | null;
    /**
     * Helper to get canvas viewport element
     */
    protected get canvasViewport(): HTMLElement | null;
    /**
     * Helper to convert client coordinates to canvas coordinates
     */
    protected clientToCanvas(clientX: number, clientY: number): {
        x: number;
        y: number;
    };
    /**
     * Helper to snap a position to the grid
     */
    protected snapToGrid(x: number, y: number, gridSize?: number): {
        x: number;
        y: number;
    };
    /**
     * Generate a unique name by appending " (copy)" or " (copy N)" suffix.
     * Checks against existing node names in the workflow.
     */
    protected generateUniqueName(originalName: string): string;
    /**
     * Generate a unique node ID
     */
    protected generateNodeId(): string;
    /**
     * Generate a unique edge ID
     */
    protected generateEdgeId(): string;
}
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