fix(mobile): word wrap now rewraps via the JS source surface - #10641
fix(mobile): word wrap now rewraps via the JS source surface#10641sabraman wants to merge 1 commit into
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| listRef.current?.scrollToOffset({ | ||
| offset: Math.max(0, info.averageItemLength * info.index), | ||
| animated: false, | ||
| }); | ||
| }, |
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🟡 Medium files/SourceFileSurface.tsx:242
Deep initialLine links in wrap mode can land on an earlier, unrelated line instead of the requested line. handleScrollToIndexFailed only estimates an offset using averageItemLength * info.index; variable-height wrapped rows can make that offset too short, and the callback never retries scrollToIndex after those rows render. Retry scrollToIndex on the next animation frame after the fallback offset.
- listRef.current?.scrollToOffset({
- offset: Math.max(0, info.averageItemLength * info.index),
- animated: false,
- });
+ listRef.current?.scrollToOffset({
+ offset: Math.max(0, info.averageItemLength * info.index),
+ animated: false,
+ });
+ requestAnimationFrame(() => {
+ listRef.current?.scrollToIndex({ index: info.index, animated: false, viewPosition: 0.3 });
+ });🤖 Copy this AI Prompt to have your agent fix this:
In file @apps/mobile/src/features/files/SourceFileSurface.tsx around lines 242-246:
Deep `initialLine` links in wrap mode can land on an earlier, unrelated line instead of the requested line. `handleScrollToIndexFailed` only estimates an offset using `averageItemLength * info.index`; variable-height wrapped rows can make that offset too short, and the callback never retries `scrollToIndex` after those rows render. Retry `scrollToIndex` on the next animation frame after the fallback offset.
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Fixed in 6e1cea1: the handler now retries scrollToIndex on the next animation frame after the estimated offset, bounded to 3 retries to avoid loops.
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ApprovabilityVerdict: Would Approve Macroscope's review found this PR approvable — This is a localized mobile file-view fix: word wrapping remains opt-in and uses the existing JavaScript surface, while header controls and an optional device-local markdown preference preserve existing defaults. An unresolved Medium finding indicates that deep line jumps may still land early in wrapped files because the fallback does not retry after row measurement. Not approved because:
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No actionable comments were generated in the recent review. 🎉 ℹ️ Recent review info⚙️ Run configurationConfiguration used: Path: .coderabbit.yaml Review profile: CHILL Plan: Advanced Run ID: 📒 Files selected for processing (1)
Included review availability: Your plan provides up to 10 included reviews per hour; 8 remain after this review. 📝 WalkthroughWalkthroughMobile source viewing now provides word-wrap controls on Android and iOS. Wrapped code uses JavaScript rendering. Native source content uses a fixed width and disabled font scaling. JavaScript lists support refresh and failed indexed-scroll retries. ChangesMobile file viewing
Priority: ⬇️ Low — Impact reflects low issue severity. Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: ⚪ Minimal · up to Mobile source viewing now offers persistent word-wrap controls and reflows wrapped code through the JavaScript renderer, with refreshed scrolling recovery behavior. No concrete current-head merge-blocking risk remains. Sequence Diagram(s)sequenceDiagram
participant ThreadFileScreen
participant AppearancePreferences
participant AndroidScreenHeader
participant SourceFileSurface
ThreadFileScreen->>AppearancePreferences: read codeWordBreak
ThreadFileScreen->>AndroidScreenHeader: render source-mode word-wrap button
AndroidScreenHeader->>ThreadFileScreen: invoke handleToggleWordBreak
ThreadFileScreen->>AppearancePreferences: update codeWordBreak
ThreadFileScreen->>SourceFileSurface: render with selected wrapping
Suggested reviewers: 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
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Inline comments:
In `@apps/mobile/src/features/files/SourceFileSurface.tsx`:
- Around line 242-251: Update handleScrollToIndexFailed to retain the fallback
scrollToOffset, then retry scrollToIndex for info.index after additional rows
render, limiting retries with a bounded count to avoid loops. Add a regression
test covering mixed wrapped-row heights and verifying the requested row is
eventually targeted.
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apps/mobile/src/components/AndroidScreenHeader.tsxapps/mobile/src/components/AppSymbol.tsxapps/mobile/src/features/files/SourceFileSurface.tsxapps/mobile/src/features/files/ThreadFilesRouteScreen.tsx
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Actionable comments posted: 1
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Inline comments:
In `@apps/mobile/src/features/files/SourceFileSurface.tsx`:
- Line 309: Update JavaScriptSourceFileSurface so its FlatList preserves
pull-to-refresh when codeWordBreak is enabled: pass the appropriate refreshing
state and onRefresh callback when provided, matching the non-wrapped path. Add a
regression test covering a wrapped source file with onRefresh.
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apps/mobile/src/features/files/SourceFileSurface.tsx
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Inline comments:
In `@apps/mobile/src/features/files/SourceFileSurface.tsx`:
- Line 267: Update handleScrollToIndexFailed and its surrounding retry effect to
retain the requestAnimationFrame handle, cancel it during cleanup when
props.path or targetIndex changes, and skip the retry when the current target is
null or no longer matches info.index. Add a regression test covering a high
target index changing to a shorter document before the retry frame executes.
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apps/mobile/src/features/files/SourceFileSurface.tsx
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Problem
Enabling word wrap on the mobile file view only removed horizontal scrolling —
long lines were clipped, never re-wrapped. The native canvas surface
(
T3ReviewDiffSurface) draws each code row once on a canvas and clips it to theview width; it has no line-wrap/reflow pass. So
codeWordBreakjust shrank thecanvas width and dropped the overflow.
Fix
JavaScript surface (
JavaScriptSourceFileSurface:FlatList+ RNText),which wraps lines to the container width. The fast native surface stays the
default non-wrapped path.
onScrollToIndexFailedso jump-to-line still works in wrap mode, whererow heights are variable (no
getItemLayout).allowFontScalingoff on the wrapped code text so the font renders atexactly the configured code font size regardless of the device font scale,
matching the native canvas surface.
so wrapping is reachable without going through Settings.
Verified on a physical device (Tecno LI9, Android 15): toggling word wrap now
rewraps long lines instead of clipping them, and the rewrapped text uses the
configured code font size.
Built with opencode/big-pickle.
Screenshots
Before — word wrap off, long line clipped at the screen edge:
After — word wrap on, same line rewrapped to the container width:
Summary by CodeRabbit
New Features
Improvements