import { Context } from "koa";
import { FormField } from "../fields/field.js";
import { FormDataValue } from "../form-types.js";
import { FormControlContext } from "./form-control.js";
import { SimpleInput, SimpleInputOptions } from "./simple-input.js";
export declare class Textarea extends SimpleInput {
    field: FormField<boolean>;
    options: SimpleInputOptions & {
        label?: string;
        rows?: number;
        cols?: number;
        description?: string;
        autogrow?: boolean;
    };
    constructor(field: FormField<boolean>, options?: SimpleInputOptions & {
        label?: string;
        rows?: number;
        cols?: number;
        description?: string;
        autogrow?: boolean;
    });
    renderDescription(): string;
    getInputAttributes(fctx: FormControlContext): Promise<Record<string, string | boolean>>;
    renderInput(ctx: Context, attributes: string, data: Record<string, FormDataValue>): Promise<string>;
}