/// <reference path="../../pxtlib.d.ts" />
import { FieldCustom, FieldCustomDropdownOptions } from "./field_utils";
import { FieldDropdown } from "./field_dropdown";
export interface FieldImageDropdownOptions extends FieldCustomDropdownOptions {
    columns?: string;
    maxRows?: string;
    width?: string;
}
export declare class FieldImageDropdown extends FieldDropdown implements FieldCustom {
    isFieldCustom_: boolean;
    protected width_: number;
    protected columns_: number;
    protected maxRows_: number;
    protected backgroundColour_: string;
    protected borderColour_: string;
    protected savedPrimary_: string;
    constructor(text: string, options: FieldImageDropdownOptions, validator?: Function);
    /**
     * Create a dropdown menu under the text.
     * @private
     */
    showEditor_(): void;
    doValueUpdate_(newValue: any): void;
    /**
     * Callback for when a button is clicked inside the drop-down.
     * Should be bound to the FieldIconMenu.
     * @param {Event} e DOM event for the click/touch
     * @private
     */
    protected buttonClick_: (e: MouseEvent) => void;
    /**
     * Callback for when the drop-down is hidden.
     */
    protected onHide_(): void;
}