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fix(desktop): keep the diff pane scrolled to the clicked file as content loads - #6679
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…ent loads Clicking a file in the Changes/Review sidebar could land on the wrong file (or an unrelated one) once other content resolved after the initial scroll — issue #6673. Three contributing causes, now fixed: - useDiffCodeViewScroll: the scroll was a one-shot that latched after the first successful scrollTo and never re-fired, and its effect depended on items.length rather than items itself. A later-resolving getDiffBulk group or an async comment thread landing above the target would silently shift it out of view. Now the scroll re-asserts itself whenever items changes, staying "sticky" until the target settles or the user takes over the scroll manually (detected via a timing window around our own programmatic scrollTo calls). - useDiffCodeViewItems: each bulk diff query is keyed on its group's full paths array, so an ordinary worktree change (a file added/removed) rotated the key and dropped that group's data to undefined mid-session, vanishing its items. Added placeholderData: keepPreviousData so the previous group's content stays on screen through the gap. - WorkspaceSidebar: the Review tab's "open in diff" never passed a changeKey, so a path present in multiple source groups (e.g. staged and against-base) fell back to "first item whose path matches" and could open the wrong group's diff. Now threads a changeKey built the same way the Changes tab does, keyed off the workspace's base branch. Claude-Session: https://claude.ai/code/session_017hdujMqKr5gFZ1hoh3SuQf
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No actionable comments were generated in the recent review. 🎉 ℹ️ Recent review info⚙️ Run configurationConfiguration used: defaults Review profile: CHILL Plan: Pro Plus Run ID: 📒 Files selected for processing (2)
Included review availability: Your plan provides up to 10 included reviews per hour; 8 remain after this review. 📝 WalkthroughWalkthroughThe workspace sidebar now selects review-comment diffs against the workspace base branch. Bulk diff responses use group-keyed caching. Diff scrolling now tracks programmatic requests and manual scrolling. ChangesWorkspace diff navigation
Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: ⚪ Minimal · up to The PR keeps the diff pane anchored to the selected file and disambiguates files across source groups; no actionable merge-blocking risk remains beyond normal checks and review. Possibly related PRs
Suggested reviewers: 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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Actionable comments posted: 2
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Inline comments:
In
`@apps/desktop/src/renderer/routes/_authenticated/_dashboard/v2-workspace/`$workspaceId/components/WorkspaceSidebar/WorkspaceSidebar.tsx:
- Around line 118-138: Defer or disable the onOpenInDiff handler in useReviewTab
until baseBranchQuery has successfully returned a non-null baseBranch. Only
create the against-base changeKey with the resolved baseBranch, while preserving
the existing diff selection behavior once it is available.
In
`@apps/desktop/src/renderer/routes/_authenticated/_dashboard/v2-workspace/`$workspaceId/hooks/usePaneRegistry/components/DiffPane/hooks/useDiffCodeViewItems/useDiffCodeViewItems.ts:
- Around line 128-134: Update the useDiffCodeViewItems query handling to cache
each latest successful response by workspace and DiffGroup.key, then provide
that cached group data as placeholderData when paths change. Do not rely on
keepPreviousData in useQueries, and retain the cached items while the updated
query refetches.
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ℹ️ Review info
⚙️ Run configuration
Configuration used: defaults
Review profile: CHILL
Plan: Pro Plus
Run ID: 0df5d9d9-31b2-4ec0-952b-a5a7f5e9a149
📒 Files selected for processing (4)
apps/desktop/src/renderer/routes/_authenticated/_dashboard/v2-workspace/$workspaceId/components/WorkspaceSidebar/WorkspaceSidebar.tsxapps/desktop/src/renderer/routes/_authenticated/_dashboard/v2-workspace/$workspaceId/hooks/usePaneRegistry/components/DiffPane/DiffPane.tsxapps/desktop/src/renderer/routes/_authenticated/_dashboard/v2-workspace/$workspaceId/hooks/usePaneRegistry/components/DiffPane/hooks/useDiffCodeViewItems/useDiffCodeViewItems.tsapps/desktop/src/renderer/routes/_authenticated/_dashboard/v2-workspace/$workspaceId/hooks/usePaneRegistry/components/DiffPane/hooks/useDiffCodeViewScroll/useDiffCodeViewScroll.ts
Included review availability: Your plan provides up to 10 included reviews per hour; 9 remain after this review.
Two correctness gaps flagged in review, both fixed: - WorkspaceSidebar: only build the Review tab's against-base changeKey once baseBranchQuery has actually resolved. Building it while still loading guessed an empty base branch, which wouldn't match the real item once the query resolved — silently breaking "open in diff" from a PR comment during that window instead of falling back to the old (safe) path-match behavior. - useDiffCodeViewItems: replace placeholderData: keepPreviousData with a cache keyed on DiffGroup.key. useQueries matches observers to diffGroups by array position, not by key — a category going from zero files to some (or vice versa) inserts/removes a whole group and shifts every later group's index, so keepPreviousData could hand back the wrong group's stale data at the shifted position. Caching by the group's own key is correct regardless of array-position churn. Verified live: fresh click on a staged file lands correctly (group-key cache in place), zero console errors before/after unstaging that file mid-session (the group-disappears edge case the second fix targets). Claude-Session: https://claude.ai/code/session_017hdujMqKr5gFZ1hoh3SuQf
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@coderabbitai Both findings addressed in 740b897:
Verified live against a real dev build: fresh click on a staged file lands correctly, and zero console errors before/after unstaging that file mid-session (the exact group-disappears scenario finding #2 was about). |
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🧹 Preview Cleanup CompleteThe following preview resources have been cleaned up:
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…restore file drag-and-drop (#6817) * fix(desktop): re-assert the diff pane's sticky scroll only when the target moves Since #6679 the sticky follow-scroll re-fired codeView.scrollTo on every effect dep change (about once a second at idle from query and identity churn). Each scrollTo makes @pierre/diffs suspend pointer events on the pinned file header for a settle window and re-snap the viewport, so the header's "Open in file viewer" and binary "Open file" buttons dropped human-speed clicks and the pane kept snapping back to the clicked file. Keep #6679's intent (correct drift as content loads) by re-asserting only for a new click/focus request or when getTopForItem reports the target actually moved; shouldReassertScroll is extracted and unit tested. Claude-Session: https://claude.ai/code/session_01S3AzvWR1UfujLFmQHiZ8wF * feat(desktop): drag changes-sidebar files into terminals v1's changes tab supported dragging a file row into a terminal to paste its path (text/plain plus application/x-superset-file-path, absolute). The v2 port dropped it: Pierre trees render rows draggable="false" and its own DnD stays disabled. Restore it v2-locally: - FileRow (folders view) takes drag props from a new useFileDrag hook. - ChangesTreeView makes its wrapper the drag source (Chromium starts a drag from the nearest draggable ancestor even across user-drag:none rows), resolves the row captured on pointerdown, stamps the absolute path, uses the row as the drag image, and cancels for folder rows. Claude-Session: https://claude.ai/code/session_01S3AzvWR1UfujLFmQHiZ8wF
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Summary
Why / Context
#6673 reports clicking a file in the Changes/Review sidebar landing on the wrong file, and notes it's hard to reproduce — it worked as soon as the reporter started recording. That's consistent with a race: the pane's files can span 1-3
getDiffBulkgroups (staged/unstaged/against-base/commit) that resolve independently, plus async PR comment threads. With a warm cache everything resolves in one pass and looks fine; under real conditions (cold cache, an agent actively changing files, a big changeset) it doesn't.How It Works
Three contributing causes, all fixed:
useDiffCodeViewScroll— one-shot scroll latch. The scroll effect bailed oncelastScrollTargetRef.current === scrollKey, and depended onitems.lengthrather thanitemsitself. So the first group to resolve triggered a scroll, then a later-resolving group landing above the target (or an async comment thread growing content above it) silently pushed the target out of view with no re-scroll. Replaced the one-shot latch with a sticky re-scroll: it keeps re-assertingscrollTofor the current click wheneveritemschanges, until either the target settles or the user manually takes over scrolling (detected via a timing window around our own programmaticscrollTocalls, since@pierre/diffsdoesn't expose a scroll-settled callback).useDiffCodeViewItems— bulk query key rotation. EachgetDiffBulkquery is keyed on that group's fullpathsarray. An ordinary worktree change (agent adds/removes a file) rotates the key, andquery.datagoesundefineduntil the refetch lands — vanishing that group's items mid-session and, if it was the only group with data, unmountingCodeViewentirely and losing scroll position. Cache the last successful response perDiffGroup.key(category + base/commit, independent of array position) so a rotated query still finds its group's prior content while it refetches.WorkspaceSidebar— Review tab missingchangeKey. The Changes tab already disambiguates same-path files across source groups via achangeKey(getChangesetFileKey), but the Review tab's "open in diff" never passed one, so it fell back to "first item whose path matches" — landing in the wrong group whenever a path exists in more than one (e.g. a file with both staged edits and a pending PR comment against the base branch). Now builds the samechangeKeyonce the workspace's base branch is known (PR review comments are inherently against-base); while it's still loading,changeKeyis omitted so this falls back to the old (safe) path-match behavior instead of guessing.Manual QA Checklist
bun run typecheckcleanbash scripts/lint.shclean on the changed filesTesting
bun run typecheck(desktop) — cleanbash scripts/lint.shon the changed files — cleangit stashofuseDiffCodeViewScroll.ts/DiffPane.tsx, delay still active): clicked the staged file, landed correctly while only that group had resolved; once the delayed unstaged group resolved and inserted 25 files above it, the viewport silently jumped to an unrelated file (preset-icons/index.ts) with no trace of the originally clicked file — reproducing the exact reported symptom.renderHook-based unit tests for the scroll hook were considered (matching a regression test suggested in the issue thread) but this repo's Bun test environment doesn't have a real DOM (test-setup.tsstubsdocumentminimally), so@testing-library/react'srenderHookthrows (TypeError: style is not an Object, confirmed empirically) — live verification was used instead.DiffGroup.keycache fix targets) — no crash, no console errors, pane correctly re-rendered the file under Unstaged.Known Limitations
scrollTocalls), not an exact signal —@pierre/diffs'CodeViewdoesn't expose a scroll-settled/animation-complete callback. A user who manually scrolls during our own smooth-scroll animation (rare) may have that scroll ignored.Summary by cubic
Keeps the diff pane anchored on the clicked file as diff groups and comments load, and opens the correct source group from the Review tab. Previously the pane could jump to a different file as later content arrived, and Review could open the wrong group for paths present in multiple sources.
@pierre/diffssmooth scroll). Exposes notifyScroll;DiffPanewires it to CodeView onScroll.placeholderData: keepPreviousDatawith a cache keyed by each diff group'skey, preserving that group’s content while its query refetches even when group positions shift. Prunes entries for removed groups. Avoids mismatches caused byuseQueriesindex-based observer matching in@tanstack/react-query.changeKeyonly afterworkspaceTrpc.git.getBaseBranchresolves; otherwise falls back to path-match. PasseschangeKeytoonSelectDiffFileto disambiguate same-path files across groups.Written for commit 740b897. Summary will update on new commits.
Summary by CodeRabbit