Danny White eef0f57309 fix(studio): clarify Storage columns keyboard focus and selection (#48222)
## What kind of change does this PR introduce?

Accessibility / UX fix
([DEPR-630](https://linear.app/supabase/issue/DEPR-630)).

## What is the current behavior?

In Storage **As columns** view, keyboard select is unclear: the checkbox
stays hidden until hover, so Tab/Space selection is hard to see. The row
actions (three dots) menu also shows a browser default blue outline on
Tab.

## What is the new behavior?

Same icon/checkbox swap as list/hover, but also on keyboard focus:
- Checkbox replaces the icon on hover, `:focus-within`, and when
selected (no layout shift)
- Checkbox becomes visible when focused via keyboard (without needing
hover)
- Row gets an inset outline while the checkbox is focused
- Folders have no checkbox (non-focusable spacer only)
- Row actions trigger uses `focus-ring` instead of the browser blue
outline

| Before | After |
| --- | --- |
| <img width="1046" height="362" alt="CleanShot 2026-07-31 at 14 37
47@2x"
src="https://github.com/user-attachments/assets/9b827627-17e6-49a6-87a3-1253b4cef1da"
/> | <img width="1046" height="390" alt="CleanShot 2026-07-31 at 14 37
13@2x"
src="https://github.com/user-attachments/assets/2fd2b426-a8e2-4fda-b1ba-4df728b7b2f1"
/> |
| _Checkbox focussed but not visually shown_ | _Checkbox focussed and
visually shown_ |

## To test

1. Open the **Studio preview** for this PR.
2. Go to **Storage → Files** → open a bucket with several files.
3. Set view to **As columns**.
4. Tab until a **file** checkbox is focused.

**Expect:**
- Icon is replaced by the checkbox (same slot; neighbouring row icons
should not look shifted)
- Checkbox visible without hovering
- Row shows an inset outline

5. Press **Space** to select. Checkbox stays in the icon slot; selection
background applies.
6. Hover another file. Same icon to checkbox swap as before.
7. Tab to the three-dot actions control on a row. Expect the shared
focus ring (not a blue browser outline); the menu icon should become
visible.
8. Folders: no checkbox in the tab order; click icon/name still opens
the folder.
9. Smoke **As list**. Same swap behaviour.

## Additional context

From Kemal's DEPR-621 review.
2026-08-03 09:59:19 +10:00
2025-06-17 11:08:46 +02:00
2026-06-30 14:03:40 +02:00
2024-01-10 13:34:41 +01:00
2021-07-25 12:45:26 +08:00

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