eewing
38 lines
1.3 KiB
JavaScript
38 lines
1.3 KiB
JavaScript
import { kbd } from "./kbd.js";
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export const FIRST_KEYS = [kbd.ARROW_DOWN, kbd.PAGE_UP, kbd.HOME];
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export const LAST_KEYS = [kbd.ARROW_UP, kbd.PAGE_DOWN, kbd.END];
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export const FIRST_LAST_KEYS = [...FIRST_KEYS, ...LAST_KEYS];
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export const SELECTION_KEYS = [kbd.SPACE, kbd.ENTER];
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/**
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* A utility function that returns the next key based on the direction and orientation.
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*/
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export function getNextKey(dir = "ltr", orientation = "horizontal") {
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return {
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horizontal: dir === "rtl" ? kbd.ARROW_LEFT : kbd.ARROW_RIGHT,
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vertical: kbd.ARROW_DOWN,
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}[orientation];
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}
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/**
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* A utility function that returns the previous key based on the direction and orientation.
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*/
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export function getPrevKey(dir = "ltr", orientation = "horizontal") {
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return {
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horizontal: dir === "rtl" ? kbd.ARROW_RIGHT : kbd.ARROW_LEFT,
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vertical: kbd.ARROW_UP,
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}[orientation];
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}
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/**
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* A utility function that returns the next and previous keys based on the direction
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* and orientation.
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*/
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export function getDirectionalKeys(dir = "ltr", orientation = "horizontal") {
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if (!["ltr", "rtl"].includes(dir))
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dir = "ltr";
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if (!["horizontal", "vertical"].includes(orientation))
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orientation = "horizontal";
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return {
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nextKey: getNextKey(dir, orientation),
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prevKey: getPrevKey(dir, orientation),
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};
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}
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