[RDE-90] fix(ios): drag and drop question

[Ki3mONo]

Summary by CodeRabbit

Release Notes

• Bug Fixes
  • Enhanced the reliability and responsiveness of drag-and-drop reordering for quiz questions to provide a smoother user experience.

[linear-code]

RDE-90

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ℹ️ Review info

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📥 Commits

Reviewing files that changed from the base of the PR and between 44e5d5d and 7d9db6d.

📒 Files selected for processing (1)

• frontend/app/components/quiz/questions/Ordering.tsx

Walkthrough

The Ordering.tsx quiz component replaces its HTML5 drag-and-drop implementation with a pointer event-based approach. A list container ref (listRef) and a mutable dragged-index ref (draggingRef) are added, and new handlers (startDrag, onDragMove, endDrag) use pointer capture and row hit-testing to drive reordering. Row markup is updated to use pointer events instead of drag attributes.

Changes

Pointer-driven drag reorder in Ordering component

Layer / File(s)	Summary
Pointer drag handlers and refs frontend/app/components/quiz/questions/Ordering.tsx	Adds useRef import; introduces listRef (list container) and draggingRef (dragged index); updates moveItem to functional state updates; implements rowUnderPointer, startDrag, onDragMove, and endDrag using pointer capture for reliable drag tracking across devices.
Row markup: pointer events frontend/app/components/quiz/questions/Ordering.tsx	Attaches ref={listRef} to the list container; removes draggable, onDragStart, onDragOver, onDragEnd; wires onPointerDown, onPointerMove, onPointerUp, onPointerCancel; adds touch/drag-friendly cursor and user-select classNames.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• rdest-devs/cogniro#45: Directly modifies the same Ordering.tsx file to replace HTML5 drag handlers with a pointer/touch-based approach, addressing the same iOS/touch reordering issue.
• rdest-devs/cogniro#46: Also modifies Ordering.tsx drag-and-drop logic, changing the prior iOS Safari drag implementation in a way that connects directly to the drag handler evolution this PR continues.

Suggested reviewers

• MichalTheProgrammer

Poem

🐇 No more dragging the HTML way,
Pointer events have come to play!
listRef watches, draggingRef knows,
Which row the fuzzy bunny goes.
Touch or mouse, it reorders with glee—
Hop hop hop, in perfect sequence! 🎉

🚥 Pre-merge checks | ✅ 4

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: fixing drag-and-drop functionality for iOS by replacing HTML5 drag-and-drop with pointer-driven implementation.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch maciek/rde-90-ios-drag-and-drop-nie-dziala-przez-webkit

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Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@frontend/app/components/quiz/questions/Ordering.tsx`:
- Around line 103-110: The reordering rows in the Ordering component contain
only pointer event handlers (onPointerDown, onPointerMove, onPointerUp,
onPointerCancel) on a non-focusable div element, making the feature inaccessible
to keyboard-only users. Make the div element focusable by adding the appropriate
tabIndex attribute, then add keyboard event handlers (such as onKeyDown) to
support keyboard navigation and reordering using arrow keys. Ensure the keyboard
interaction follows standard accessibility patterns for reorderable list items
so that keyboard users can complete the question flow.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

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Configuration used: Path: .coderabbit.yaml

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📥 Commits

Reviewing files that changed from the base of the PR and between 420d0f3 and 44e5d5d.

📒 Files selected for processing (1)

• frontend/app/components/quiz/questions/Ordering.tsx

[Ki3mONo]

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[MichalTheProgrammer]

Remove comments. They only make the readability worse. LGTM, lets test on prod. Make sure that it works when the list is very long, so you need to scroll, it might trigger reordering.

[Ki3mONo]

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