import { NamedContainer } from "./named-container.js";
import type { TextStyle } from "./paintable.js";
export type ChoiceType = any;
export type ChoiceItem = {
    text: string;
    value: ChoiceType;
    fieldName?: string;
};
export interface ChoiceStyle extends TextStyle {
    fillColor?: string;
    rootColor?: string;
    rootTextColor?: string;
    arrowColor?: string;
    spacing?: number;
}
export type ChooserConst = new (items: ChoiceItem[], item_w: number, item_h: number, style?: ChoiceStyle) => Chooser;
/** abstract base class for other Chooser implementations */
export declare abstract class Chooser extends NamedContainer {
    items: ChoiceItem[];
    constructor(items: ChoiceItem[], item_w: number, item_h: number, style?: ChoiceStyle);
    _itemChanged: (item: ChoiceItem) => void;
    /** application sets a callback, to react when ChoiceItem is selected. */
    onItemChanged(f: (item: ChoiceItem) => void): void;
    /** selected item has changed: invoke onChange(item) */
    changed(item: ChoiceItem): void;
    /** call when Chooser is ready for use; after setting onItemChange() etc. */
    enable(): void;
    /** choose the given Item. */
    select(item: ChoiceItem): ChoiceItem;
    /**
     * Set value in target in the prototype where it is defined.
     *
     * Used when target extends a library class compiled to use the base class.
     *
     * For example: TP-local extends TP-lib when using hexlib
     *
     * @param value the new value to be set
     * @param item included for those that need item.fieldName or such
     * @param target the associated object to which fieldName applies
     * @return false if value has not been set; call select(item) instead.
     */
    setValue(value: any, item: ChoiceItem, target?: object): boolean;
}