import type { MdyWidgetKind } from "./catalog.js";
/** What an affordance is for, which decides whether it needs a hit target. */
export type MdyAffordanceRole = 
/** Operable: it opens something, or it steps a value. Needs a target a finger can hit. */
"control"
/** Decorative: it says the field opens, and the field itself is what you press. */
 | "indicator";
export interface MdyAffordance {
    readonly part: string;
    readonly role: MdyAffordanceRole;
}
/**
 * The trailing affordances a kind draws, in the order the catalogue declares them.
 *
 * Empty for a kind that has none — a plain text field ends at its own edge.
 */
export declare function trailingAffordances(kind: MdyWidgetKind): readonly MdyAffordance[];
/** Every kind that draws at least one trailing affordance. */
export declare function kindsWithAffordances(): readonly MdyWidgetKind[];
/**
 * The classes a renderer or a theme selects an affordance by, across every kind.
 *
 * A theme needs one selector list to give them all the same geometry, and building it from the
 * catalogue is what stops that list going stale the day a kind gains a button.
 */
export declare function affordanceClasses(role?: MdyAffordanceRole): readonly string[];