import { TemplateResult, CSSResultArray } from 'lit';
import NileElement from '../../internal/nile-element';
import '../../nile-input/index';
import '../../nile-button/index';
import '../../nile-button-toggle-group/index';
import '../../nile-button-toggle/index';
/**
 * Floating math-insert panel: enter a LaTeX expression. Styled to match the
 * image/embed panels (nile-input + nile-button). Emits `wysiwyg-math-apply`
 * detail: { latex, display } and `wysiwyg-math-cancel`. Rendering of the
 * formula itself is the host's job (via a mathRenderer).
 */
export declare class NileWysiwygMathPanel extends NileElement {
    open: boolean;
    private latexValue;
    private display;
    static get styles(): CSSResultArray;
    /** Opens with an optional initial value (editing an existing formula). */
    focusInput(initial?: string): void;
    /** Clears the field. */
    reset(): void;
    private onLatex;
    private handleSubmit;
    private handleKeydown;
    render(): TemplateResult;
}
declare global {
    interface HTMLElementTagNameMap {
        'nile-wysiwyg-math-panel': NileWysiwygMathPanel;
    }
}