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| const withEntitySearch = <P,>(Component: ComponentType<P>) => (props: P) => { | |
| const [target, setTarget] = useState<Range | null | undefined>(null); | |
| const [index, setIndex] = useState(0); | |
| const [searchState, setSearch] = useState<SearchState>(({ | |
| searchTerm: '', | |
| searchType: null, | |
| } as unknown) as SearchState); | |
| const optionsMenuRef = useRef<HTMLDivElement | null>(null); | |
| // this is just a custom hook that calls an api | |
| const { options } = useAlgoliaSearch({ ...searchState }); | |
| const editor = useMemo(() => withHistory(withReact(createEditor())), []); | |
| const onKeyDown = useCallback( | |
| (event) => { | |
| if (target) { | |
| switch (event.key) { | |
| case 'ArrowDown': | |
| { | |
| event.preventDefault(); | |
| const prevIndex = index >= options.length - 1 ? 0 : index + 1; | |
| setIndex(prevIndex); | |
| } | |
| break; | |
| case 'ArrowUp': | |
| { | |
| event.preventDefault(); | |
| const nextIndex = index <= 0 ? options.length - 1 : index - 1; | |
| setIndex(nextIndex); | |
| } | |
| break; | |
| case 'Tab': | |
| case 'Enter': | |
| event.preventDefault(); | |
| Transforms.select(editor, target); | |
| insertEntity(editor, options[index], searchState.searchType); | |
| setTarget(null); | |
| break; | |
| case 'Escape': | |
| event.preventDefault(); | |
| setTarget(null); | |
| break; | |
| default: | |
| break; | |
| } | |
| } | |
| }, | |
| [index, searchState, target, options], | |
| ); | |
| const handleEntitySearch = useCallback(() => { | |
| const { selection } = editor; | |
| if (selection && Range.isCollapsed(selection)) { | |
| const [start] = Range.edges(selection); | |
| const wordBefore = Editor.before(editor, start, { unit: 'word' }); | |
| const before = wordBefore && Editor.before(editor, wordBefore); | |
| const beforeRange = before && Editor.range(editor, before, start); | |
| const beforeText = beforeRange && Editor.string(editor, beforeRange); | |
| const beforeMatch = beforeText && beforeText.match(/(^#dx|#sy)(\w+)$/); | |
| const after = Editor.after(editor, start); | |
| const afterRange = Editor.range(editor, start, after); | |
| const afterText = Editor.string(editor, afterRange); | |
| const afterMatch = afterText.match(/^(\s|$)/); | |
| if (beforeMatch && afterMatch) { | |
| const [, searchType, searchTerm] = beforeMatch; | |
| setTarget(beforeRange); | |
| setSearch({ | |
| searchTerm, | |
| searchType, | |
| }); | |
| setIndex(0); | |
| return; | |
| } | |
| } | |
| setTarget(null); | |
| }, [editor]); | |
| useEffect(() => { | |
| if (optionsMenuRef?.current && target && options.length > 0) { | |
| const el = optionsMenuRef.current; | |
| const domRange = ReactEditor.toDOMRange(editor, target); | |
| const rect = domRange.getBoundingClientRect(); | |
| el.style.top = `${rect.top + window.pageYOffset + 24}px`; | |
| el.style.left = `${rect.left + window.pageXOffset}px`; | |
| } | |
| }, [options.length, editor, index, searchState, target]); | |
| return ( | |
| <> | |
| <Component | |
| {...props} | |
| ref={optionsMenuRef} | |
| withEntitySearch | |
| {...{ | |
| entityOptions: options, | |
| slateEditor: editor, | |
| onKeyDown, | |
| searchState, | |
| setSearch, | |
| index, | |
| setIndex, | |
| setTarget, | |
| target, | |
| handleEntitySearch, | |
| }} | |
| /> | |
| </> | |
| ); | |
| }; |
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