import { Plugin } from '../../core/Plugin';
import { HTMLEditor } from '../../core/HTMLEditor';
export declare class ResponsivePlugin implements Plugin {
    name: string;
    private editor;
    private menu;
    private viewportManager;
    private toolbarButton;
    constructor();
    initialize(editor: HTMLEditor): void;
    private addToolbarButton;
    private setupViewportControls;
    destroy(): void;
}