AutoFocus
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@ -1,4 +1,4 @@
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import { useState, useRef, useEffect } from "react";
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import { useState, useRef, useEffect, useCallback } from "react";
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const focusUrlParamName = 'focus'
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const focusChangedEventName = "focus-changed"
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@ -16,31 +16,51 @@ function triggerElementFocused(elementKey?: string) {
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window.dispatchEvent(focusChangeEvent)
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}
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export function useFocusedElement(elementKey: string) {
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export function useFocusedElement<ElementType extends HTMLElement>(elementKey: string) {
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const [isFocusedElement, setFocusedElement] = useState(false)
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const focusedClass = isFocusedElement ? focusedElementClassName : ''
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const elementRef = useRef<HTMLSpanElement>(null)
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const elementRef = useRef<ElementType>(null)
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function focusElement() {
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const focusElement = useCallback(() => {
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triggerElementFocused(isFocusedElement ? undefined : elementKey)
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}
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}, [isFocusedElement, elementKey])
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useEffect(() => {
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function getFocusedState() {
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function updateFocusedState() {
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const params = new URLSearchParams(window.location.search)
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const focusedElement = params.get(focusUrlParamName)
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const focused: boolean = focusedElement && focusedElement == elementKey || false
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setFocusedElement(focused)
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}
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getFocusedState()
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addEventListener(focusChangedEventName, getFocusedState)
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updateFocusedState()
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addEventListener(focusChangedEventName, updateFocusedState)
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return () => {
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removeEventListener(focusChangedEventName, getFocusedState)
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removeEventListener(focusChangedEventName, updateFocusedState)
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}
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}, [elementKey, setFocusedElement])
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}, [elementKey, setFocusedElement, focusElement])
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isFocusedElement && elementRef.current?.scrollIntoView()
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return {isFocusedElement, focusedClass, elementRef, focusElement}
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}
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export function useAutoFocus<ElementType extends HTMLElement>(elementKey: string) {
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const {elementRef, focusedClass, focusElement} = useFocusedElement<ElementType>(elementKey);
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useEffect(() => {
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let cleanup = () => {}
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if (elementRef.current) {
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const elem = elementRef.current
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elem.onclick = focusElement
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const classNameBackup = elem.className
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elem.className += ' ' + focusedClass
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cleanup = () => {
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elem.className = classNameBackup
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}
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}
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return cleanup
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}, [elementRef, focusedClass, focusElement])
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return elementRef
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}
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@ -1,5 +1,6 @@
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import React from 'react';
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import Card from 'react-bootstrap/Card';
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import { useAutoFocus, useFocusedElement } from '../FocusedElement';
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export type Props = {
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heading?: string,
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@ -10,8 +11,9 @@ export type Props = {
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};
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export default function JobCard(props: Props) {
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const focusRef = useAutoFocus<HTMLDivElement>([props.position, props.company].join(', '))
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return (
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<Card className='job-card'>
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<Card ref={focusRef} className='job-card'>
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{props.heading && (
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<Card.Header>{props.heading}</Card.Header>
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)}
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@ -1,6 +1,6 @@
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import React, { useEffect, useRef, useState } from 'react';
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import Container from 'react-bootstrap/Container';
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import { useFocusedElement } from '../FocusedElement';
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import { useAutoFocus, useFocusedElement } from '../FocusedElement';
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export type Props = {
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title: string,
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@ -11,11 +11,9 @@ export type Props = {
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function Tag(props: {text: string}) {
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const tagKey = 'tag_' + props.text;
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const {elementRef, focusedClass, focusElement} = useFocusedElement(tagKey)
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const elementRef = useAutoFocus(tagKey)
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return (
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<span ref={elementRef}
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onClick={focusElement}
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className={`badge text-bg-light ${focusedClass}`}>{props.text}</span>
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<span ref={elementRef} className='badge text-bg-light'>{props.text}</span>
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)
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}
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