fix(http): keep focus on rule removal and name the preview body by erkamyaman · Pull Request #294 · pangular-inspector/devtools

erkamyaman · 2026-10-11T03:43:11Z

What and why

Removing a fault rule or SSR override no longer drops focus to the page body. Focus moves to the next Remove button, the previous one when the last row went, or the list heading when the list is empty. A repeated "Rule removed." is re-announced.
The status and Apply on dropdowns point at the SSR mock note. The override type dropdown and the Error message field point at the help text for the chosen override. The shared app-select gains a describedBy input.
The timeline count no longer shows "0 of 0" before the first call.
The response preview and TransferState values, which are scrollable focus stops, get role="region" and a label.
Already fine on main, so left as is: hints inside labels (URL pattern, page pattern, "(optional)"), the body field's error link, and tabindex="0" on the preview.

How it was verified

pnpm format:check
pnpm typecheck
pnpm test:panel (248 passed), with 6 new tests that fail without the change
pnpm test:devtools (1508 passed)
pnpm docs:build
pnpm extension:build, with extension/ui committed
Axe on every panel view, dark and light
SSR demo, dark and light at 1280px and 360px: 0 axe violations, no sideways scrolling, focus after Remove checked with the keyboard

Screenshots

None attached.

Notes for reviewers

PR fix(ui): stop live counts from flooding screen readers #283 rewrites the .total span. This change hides the count through a class on .filters instead, so the two shouldn't conflict.
Focus after the last removal goes to the list heading (tabindex="-1"), because Add rule is disabled once the form is empty.

Summary by CodeRabbit

Accessibility
- Improved keyboard focus management when removing rules or overrides.
- Added clearer help-text associations and accessible names for response previews and form controls.
- Repeated save confirmations are announced reliably without overriding newer messages.
User Interface
- The HTTP timeline now hides the call count when there are no calls.
Documentation
- Clarified how focus moves after removing a fault-injection rule and when the timeline call count appears.

Removing a fault rule or an SSR override dropped focus to the page body. Focus now moves to the next Remove button, the previous one when the last row went, or the list heading when the list is empty. A repeated "Rule removed." message is cleared and set again so the status region reads it each time. The status and Apply on dropdowns point at the SSR mock note, and the override kind dropdown and the error message field point at the help text for the chosen override. The shared select gains a describedBy input for this. The timeline count is hidden until there is a call, instead of showing "0 of 0" next to the empty state. The response preview and the TransferState values are scrollable focus stops, so they get role region and a label.

cloudflare-workers-and-pages · 2026-10-11T03:43:20Z

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coderabbitai · 2026-10-11T03:43:30Z

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⛔ Files ignored due to path filters (1)

extension/ui/assets/index-C4qcfWO-.js is excluded by !**/assets/index-[0-9a-z_-][0-9a-z_-][0-9a-z_-][0-9a-z_-][0-9a-z_-][0-9a-z_-][0-9a-z_-][0-9a-z_-].js

📒 Files selected for processing (4)

app/src/__tests__/network-a11y.test.ts
app/src/pages/network-inspector.ts
extension/ui/assets/browser-agent-rpc-BXhoSh1z-DUa6AJvX.js
extension/ui/index.html

🚧 Files skipped from review as they are similar to previous changes (2)

app/src/tests/network-a11y.test.ts
app/src/pages/network-inspector.ts

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📝 Walkthrough

Walkthrough

The Network Inspector adds accessibility associations and named regions, changes the empty-timeline count display, and updates focus and save announcements after removals. The extension page and browser-agent RPC module now reference a different JavaScript bundle.

Changes

Network Inspector accessibility

Layer / File(s)	Summary
Accessible controls and previews `app/src/ui/select.ts`, `app/src/pages/network-inspector.ts`, `app/src/__tests__/network-a11y.test.ts`, `apps/docs/src/content/inspectors/ssr-http.md`	`Select` accepts a help-text ID through `describedBy`. Network Inspector controls reference help text, previews and TransferState values have named regions, and the empty timeline hides its call count. Tests cover these accessibility changes. Documentation describes when the count appears.
Removal focus and announcements `app/src/pages/network-inspector.ts`, `app/src/__tests__/network-a11y.test.ts`, `apps/docs/src/content/inspectors/ssr-http.md`	Rule and override removal now waits for a successful save before moving focus to a remaining Remove button or the list heading. Save confirmations use an announcement helper that restores repeated messages unless a newer message replaces them. Tests cover focus and announcement behavior. Documentation describes rule-removal focus behavior.

Bundled asset references

Layer / File(s)	Summary
Updated bundled asset references `extension/ui/index.html`, `extension/ui/assets/browser-agent-rpc-*.js`	The extension page module script and browser-agent RPC module import reference `index-C4qcfWO-.js` instead of `index-C9d0ohZn.js`.

Priority: ➖ Normal

Estimated code review effort: 3 (Moderate) | ~20 minutes

Change: Bug fix

Sequence Diagram(s)

sequenceDiagram
  actor User
  participant NetworkInspector
  participant save
  participant DOM
  User->>NetworkInspector: Remove a rule or override
  NetworkInspector->>save: Save changes
  save-->>NetworkInspector: Save succeeds
  NetworkInspector->>DOM: Focus a remaining Remove button or list heading

Merge Risk: ⚪ Minimal · up to 7ea2d

The changes improve keyboard focus and screen-reader context in the Network Inspector, and the extension references a bundle that provides its required export. No concrete merge-blocking risk remains.

Pre-merge checks | 4 | 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage		Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 17 functions across 6 files. (1 skipped: 1…	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.
Title check		The title clearly and concisely describes the main accessibility changes: preserving focus after rule removal and naming the response preview body.
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

Full details: Docstring Coverage

Explanation

Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 17 functions across 6 files. (1 skipped: 1 unsupported.)

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…view # Conflicts: # extension/ui/assets/browser-agent-rpc-BXhoSh1z-CQUbrXfP.js # extension/ui/assets/browser-agent-rpc-BXhoSh1z-DIT7xZ-N.js # extension/ui/assets/browser-agent-rpc-BXhoSh1z-J4TrlP2H.js # extension/ui/assets/index-BC4CNdzR.js # extension/ui/assets/index-C9d0ohZn.js # extension/ui/assets/index-CgvJVwtz.js # extension/ui/index.html

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Inline comments:
Review comments at @app/src/pages/network-inspector.ts:
- Around line 2672-2673: Update the announcement logic in the
`network-inspector` flow so a pending `afterNextRender` callback cannot
overwrite a newer `message`; cancel pending restores when a new announcement
arrives, or restore `text` only while `message` remains empty, while preserving
announcements when the same text is repeated.

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extension/ui/assets/index-FCYdyoNb.js is excluded by !**/assets/index-[0-9a-z_-][0-9a-z_-][0-9a-z_-][0-9a-z_-][0-9a-z_-][0-9a-z_-][0-9a-z_-][0-9a-z_-].js

📒 Files selected for processing (3)

app/src/pages/network-inspector.ts
extension/ui/assets/browser-agent-rpc-BXhoSh1z-BSnUFfXd.js
extension/ui/index.html

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The delayed restore of a repeated message could replace a message set after it. It now restores only while the status is still empty.

The panel changed, so the committed bundle is rebuilt to match.

erkamyaman requested a review from santoshyadavdev as a code owner October 11, 2026 03:43

github-actions Bot added area: panel The devtools panel app (app/) area: extension The Chrome extension area: docs The documentation site labels Oct 11, 2026

coderabbitai Bot reviewed Oct 11, 2026

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Comment thread app/src/pages/network-inspector.ts Outdated

erkamyaman added 2 commits October 11, 2026 05:53

fix(http): keep a newer status message over a pending repeat

0b2c8cf

The delayed restore of a repeated message could replace a message set after it. It now restores only while the status is still empty.

build(extension): rebuild the panel bundle

7ea2d27

The panel changed, so the committed bundle is rebuilt to match.

erkamyaman merged commit 042ea9f into main Oct 11, 2026
7 of 8 checks passed

erkamyaman deleted the http/a11y-rules-preview branch October 11, 2026 06:02

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fix(http): keep focus on rule removal and name the preview body - #294

fix(http): keep focus on rule removal and name the preview body#294
erkamyaman merged 4 commits into
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http/a11y-rules-preview

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