import { Context } from "koa";
import { FlatTemplatable } from "tempstream";
import { File } from "./file.js";
import { FormField } from "../fields/field.js";
import { SimpleInputOptions } from "./simple-input.js";
import { FormControlContext } from "./form-control.js";
import { FileContainer } from "../fields/file.js";
import { FilePointer } from "@sealcode/file-manager";
export declare class Image extends File {
    field: FormField<boolean, FileContainer>;
    constructor(field: FormField<boolean, FileContainer>, options?: SimpleInputOptions);
    getImgStyle(): Promise<string>;
    renderFilePreview(ctx: Context, file: FilePointer | null): Promise<FlatTemplatable>;
    getWrapperModifiers(): string[];
    getInputAttributes(fctx: FormControlContext): Promise<{
        accept: string;
        onchange: string;
    }>;
}