| 1 | import { useCanGoBack, useNavigate } from "@tanstack/react-router"; |
| 2 | import { useCallback, useEffect } from "react"; |
| 3 | |
| 4 | /** Returns to the previous app page, or home when opened without app history. */ |
| 5 | function useNavigateBack() { |
| 6 | const navigate = useNavigate(); |
| 7 | const canGoBack = useCanGoBack(); |
| 8 | |
| 9 | return useCallback(() => { |
| 10 | if (canGoBack) { |
| 11 | window.history.back(); |
| 12 | return; |
| 13 | } |
| 14 | void navigate({ to: "/" }); |
| 15 | }, [canGoBack, navigate]); |
| 16 | } |
| 17 | |
| 18 | /** Enables page-level Escape navigation, letting controls consume Escape first. */ |
| 19 | export function useEscapeToGoBack(onEscape?: () => void) { |
| 20 | const navigateBack = useNavigateBack(); |
| 21 | const handleEscape = onEscape ?? navigateBack; |
| 22 | |
| 23 | useEffect(() => { |
| 24 | const onKeyDown = (event: KeyboardEvent) => { |
| 25 | if (event.defaultPrevented || event.repeat || event.isComposing || event.key !== "Escape") |
| 26 | return; |
| 27 | event.preventDefault(); |
| 28 | |
| 29 | const activeElement = document.activeElement; |
| 30 | if (activeElement instanceof HTMLElement) { |
| 31 | activeElement.blur(); |
| 32 | } |
| 33 | |
| 34 | handleEscape(); |
| 35 | }; |
| 36 | |
| 37 | window.addEventListener("keydown", onKeyDown); |
| 38 | return () => window.removeEventListener("keydown", onKeyDown); |
| 39 | }, [handleEscape]); |
| 40 | } |