useFetch.js
2 days ago
useFileUploader.js
2 days ago
useModalState.js
2 days ago
useSearchCombobox.js
2 days ago
useSearchCombobox.js
128 lines
| 1 | /** |
| 2 | * External Dependencies |
| 3 | */ |
| 4 | import { useDebounce } from '@wordpress/compose'; |
| 5 | import { useState, useRef, useCallback, useEffect } from '@wordpress/element'; |
| 6 | |
| 7 | export function useSearchCombobox( { endpoint, onSelect, delay = 300 } ) { |
| 8 | const [ suggestions, setSuggestions ] = useState( [] ); |
| 9 | const [ isOpen, setIsOpen ] = useState( false ); |
| 10 | const [ activeIndex, setActiveIndex ] = useState( -1 ); |
| 11 | const inputRef = useRef( null ); |
| 12 | |
| 13 | const fetchData = useCallback( |
| 14 | async ( query ) => { |
| 15 | try { |
| 16 | const res = await fetch( |
| 17 | endpoint.replace( '{{search}}', query ) |
| 18 | ); |
| 19 | const data = await res.json(); |
| 20 | setSuggestions( data ); |
| 21 | setIsOpen( data.length > 0 ); |
| 22 | setActiveIndex( -1 ); |
| 23 | } catch ( err ) { |
| 24 | console.error( 'useSearchCombobox fetch error:', err ); |
| 25 | setSuggestions( [] ); |
| 26 | } |
| 27 | }, |
| 28 | [ endpoint ] |
| 29 | ); |
| 30 | |
| 31 | const debouncedFetch = useDebounce( fetchData, delay ); |
| 32 | |
| 33 | const close = useCallback( () => { |
| 34 | setSuggestions( [] ); |
| 35 | setIsOpen( false ); |
| 36 | setActiveIndex( -1 ); |
| 37 | }, [] ); |
| 38 | |
| 39 | const handleInputChange = useCallback( |
| 40 | ( e ) => { |
| 41 | const query = e.target.value; |
| 42 | if ( ! query.trim() ) { |
| 43 | close(); |
| 44 | return; |
| 45 | } |
| 46 | debouncedFetch( query ); |
| 47 | }, |
| 48 | [ debouncedFetch, close ] |
| 49 | ); |
| 50 | |
| 51 | const handleKeyDown = useCallback( |
| 52 | ( e ) => { |
| 53 | if ( ! isOpen ) { |
| 54 | return; |
| 55 | } |
| 56 | |
| 57 | if ( e.key === 'ArrowDown' ) { |
| 58 | e.preventDefault(); |
| 59 | setActiveIndex( ( i ) => ( i + 1 ) % suggestions.length ); |
| 60 | } else if ( e.key === 'ArrowUp' ) { |
| 61 | e.preventDefault(); |
| 62 | setActiveIndex( |
| 63 | ( i ) => ( i - 1 + suggestions.length ) % suggestions.length |
| 64 | ); |
| 65 | } else if ( e.key === 'Enter' ) { |
| 66 | e.preventDefault(); |
| 67 | if ( activeIndex > -1 ) { |
| 68 | onSelect( suggestions[ activeIndex ], inputRef ); |
| 69 | close(); |
| 70 | } |
| 71 | } else if ( e.key === 'Escape' ) { |
| 72 | if ( inputRef.current ) { |
| 73 | inputRef.current.value = ''; |
| 74 | } |
| 75 | close(); |
| 76 | } |
| 77 | }, |
| 78 | [ isOpen, suggestions, activeIndex, onSelect, close ] |
| 79 | ); |
| 80 | |
| 81 | const handleSelect = useCallback( |
| 82 | ( suggestion ) => { |
| 83 | onSelect( suggestion, inputRef ); |
| 84 | close(); |
| 85 | }, |
| 86 | [ onSelect, close ] |
| 87 | ); |
| 88 | |
| 89 | useEffect( () => { |
| 90 | const onKeyDown = ( e ) => { |
| 91 | if ( e.key === 'Escape' && isOpen ) { |
| 92 | if ( inputRef.current ) { |
| 93 | inputRef.current.value = ''; |
| 94 | } |
| 95 | close(); |
| 96 | } |
| 97 | }; |
| 98 | document.addEventListener( 'keydown', onKeyDown ); |
| 99 | return () => document.removeEventListener( 'keydown', onKeyDown ); |
| 100 | }, [ isOpen, close ] ); |
| 101 | |
| 102 | // Spread these directly onto your <input> |
| 103 | const inputProps = { |
| 104 | ref: inputRef, |
| 105 | role: 'combobox', |
| 106 | 'aria-autocomplete': 'list', |
| 107 | 'aria-expanded': isOpen, |
| 108 | 'aria-activedescendant': |
| 109 | activeIndex > -1 ? `suggestion-${ activeIndex }` : undefined, |
| 110 | onChange: handleInputChange, |
| 111 | onKeyDown: handleKeyDown, |
| 112 | }; |
| 113 | |
| 114 | // Spread these directly onto your <ul> |
| 115 | const listProps = { |
| 116 | role: 'listbox', |
| 117 | }; |
| 118 | |
| 119 | return { |
| 120 | suggestions, |
| 121 | isOpen, |
| 122 | activeIndex, |
| 123 | inputProps, |
| 124 | listProps, |
| 125 | handleSelect, |
| 126 | }; |
| 127 | } |
| 128 |