'use client'; import * as React from 'react'; var TEXT_NAVIGATION_RESET_TIMEOUT = 500; // milliseconds /** * @ignore - internal hook. * * Provides a handler for text navigation. * It's used to navigate a list by typing the first letters of the options. * * @param callback A function to be called when the navigation should be performed. * @returns A function to be used in a keydown event handler. */ export function useTextNavigation(callback) { var textCriteriaRef = React.useRef({ searchString: '', lastTime: null }); return React.useCallback(function (event) { if (event.key.length === 1 && event.key !== ' ') { var textCriteria = textCriteriaRef.current; var lowerKey = event.key.toLowerCase(); var currentTime = performance.now(); if (textCriteria.searchString.length > 0 && textCriteria.lastTime && currentTime - textCriteria.lastTime > TEXT_NAVIGATION_RESET_TIMEOUT) { textCriteria.searchString = lowerKey; } else if (textCriteria.searchString.length !== 1 || lowerKey !== textCriteria.searchString) { // If there is just one character in the buffer and the key is the same, do not append textCriteria.searchString += lowerKey; } textCriteria.lastTime = currentTime; callback(textCriteria.searchString, event); } }, [callback]); }