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patchpass/UI/src/hooks/useScrollLock.ts
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feat(ui): make the UI feel native on mobile
Reworks the frontend around phone-first interaction patterns and makes the
app installable to a home screen.

Shell
- Bottom tab bar (Home / Requests / Agents / Alerts / Settings) below `md`,
  with the unread badge moved onto the Alerts tab; the bell stays on desktop.
- Account menu opens as a bottom sheet on phones, dropdown on desktop.
- Safe-area insets throughout: `viewport-fit=cover` plus `env(safe-area-inset-*)`
  on the sticky header, tab bar and sheet footers.

Sheets
- New `Sheet` primitive: drag-to-dismiss bottom sheet on phones, centred dialog
  from `sm` up. `Modal` now delegates to it, so every dialog inherits the
  gesture, the scroll lock and the safe-area padding.
- Portalled to `<body>` — an ancestor with a transform (the page fade-in) was
  otherwise becoming the containing block and displacing the fixed overlay.
- Scroll lock pins `<body>` and restores position, which iOS needs; plain
  `overflow: hidden` still rubber-bands there.
- `ConfirmSheet` replaces `window.confirm` for destructive actions.

Screens
- Request detail gets a sticky decision bar above the tab bar; the sidebar
  decision card is now desktop-only.
- Requests state filter becomes a swipeable pill row instead of a select.
- Agent cards show two primary actions plus an overflow sheet on phones.
- Diffs and code blocks contain their horizontal overscroll so a sideways swipe
  no longer triggers browser back; diffs gain a line-wrap toggle.
- `min-w-0` on grid tracks — items default to `min-width: auto`, so truncated
  meta lines were widening columns past the viewport at 320px.

Touch and input
- 44px minimum touch targets, `:active` press feedback, no tap highlight.
- 16px inputs on coarse pointers so iOS stops zooming on focus.
- autocomplete/inputmode hints so password managers and keyboards behave.
- `overscroll-behavior-y: none` disables pull-to-refresh; motion respects
  `prefers-reduced-motion`.

PWA
- Manifest, generated app icons (192/512/apple-touch) and standalone display
  metadata, so the app installs to a home screen without browser chrome.
- Backend serves `.webmanifest` as `application/manifest+json`; rjweb's type
  map has no entry for it.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-01 00:43:48 +02:00

45 lines
1.1 KiB
TypeScript

import { useEffect } from "react";
// `overflow: hidden` on <body> is not enough on iOS Safari — the page still
// rubber-bands behind the overlay. Pinning the body and restoring scroll on
// release is the only approach that holds across engines.
let locks = 0;
let savedScrollY = 0;
let saved: Partial<CSSStyleDeclaration> = {};
function lock() {
if (locks++ > 0) return;
const body = document.body;
savedScrollY = window.scrollY;
saved = {
position: body.style.position,
top: body.style.top,
left: body.style.left,
right: body.style.right,
width: body.style.width,
overflow: body.style.overflow,
};
body.style.position = "fixed";
body.style.top = `-${savedScrollY}px`;
body.style.left = "0";
body.style.right = "0";
body.style.width = "100%";
body.style.overflow = "hidden";
}
function unlock() {
if (--locks > 0) return;
locks = 0;
Object.assign(document.body.style, saved);
window.scrollTo(0, savedScrollY);
}
export function useScrollLock(active: boolean) {
useEffect(() => {
if (!active) return;
lock();
return unlock;
}, [active]);
}