(options: UseInputHistoryOptions = {})
| 20 | } |
| 21 | |
| 22 | export function useInputHistory(options: UseInputHistoryOptions = {}): UseInputHistoryReturn { |
| 23 | const { isActive = true, getCurrentInput } = options |
| 24 | |
| 25 | // All history entries (oldest first, newest at end) |
| 26 | const [history, setHistory] = useState<string[]>([]) |
| 27 | |
| 28 | // Current position in history (-1 = not browsing, 0 = oldest, history.length-1 = newest) |
| 29 | const [historyIndex, setHistoryIndex] = useState(-1) |
| 30 | |
| 31 | // The user's typed text before they started navigating history |
| 32 | const [draft, setDraft] = useState("") |
| 33 | |
| 34 | // Flag to track if history has been loaded |
| 35 | const historyLoaded = useRef(false) |
| 36 | |
| 37 | // Load history on mount |
| 38 | useEffect(() => { |
| 39 | if (!historyLoaded.current) { |
| 40 | historyLoaded.current = true |
| 41 | loadHistory() |
| 42 | .then(setHistory) |
| 43 | .catch(() => { |
| 44 | // Ignore load errors - history is not critical |
| 45 | }) |
| 46 | } |
| 47 | }, []) |
| 48 | |
| 49 | // Navigate to older history entry |
| 50 | const navigateUp = useCallback(() => { |
| 51 | if (!isActive) return |
| 52 | if (history.length === 0) return |
| 53 | |
| 54 | if (historyIndex === -1) { |
| 55 | // Starting to browse - save current input as draft |
| 56 | if (getCurrentInput) { |
| 57 | setDraft(getCurrentInput()) |
| 58 | } |
| 59 | // Go to newest entry |
| 60 | setHistoryIndex(history.length - 1) |
| 61 | } else if (historyIndex > 0) { |
| 62 | // Go to older entry |
| 63 | setHistoryIndex(historyIndex - 1) |
| 64 | } |
| 65 | // At oldest entry - stay there |
| 66 | }, [isActive, history, historyIndex, getCurrentInput]) |
| 67 | |
| 68 | // Navigate to newer history entry |
| 69 | const navigateDown = useCallback(() => { |
| 70 | if (!isActive) return |
| 71 | if (historyIndex === -1) return // Not browsing |
| 72 | |
| 73 | if (historyIndex < history.length - 1) { |
| 74 | // Go to newer entry |
| 75 | setHistoryIndex(historyIndex + 1) |
| 76 | } else { |
| 77 | // At newest entry - return to draft |
| 78 | setHistoryIndex(-1) |
| 79 | } |
no test coverage detected