qwen-code/packages/web-shell/client/styles
C0d3N1nja97342 e7362d5d08
fix(web-shell): add explicit ::selection for message content in Firefox (#8417)
* fix(web-shell): add explicit ::selection for message content in Firefox

Firefox does not paint the default selection highlight for text whose
element chain passes through a display:contents element (the
data-user-selectable wrapper on MessageItem). The logical selection
(copy, selectionchange popup) works fine - only the visual highlight is
missing. An explicit ::selection background makes Firefox paint the
highlight where the default painting fails.

Fixes #8214

* fix: use fixed color instead of non-existent CSS variable

--selection-bg was never defined in the codebase (only
--chat-editor-selection-bg exists in App.module.css). Use a fixed
hsl(210 100% 50% / 30%) to avoid confusion.

* test(web-shell): pin ::selection rule and soften root-cause framing

Reframe the standalone.css comment and PR description as a defensive
workaround, not a confirmed root-cause fix: the data-user-selectable
wrapper is shared by user and assistant rows, and the reporter's
screenshot shows an embedding-page toolbar this package does not ship.

Add a getComputedStyle(..., '::selection') assertion to the smoke e2e so
a future cleanup cannot silently drop the rule.

* fix(web-shell): move ::selection rule to component-scoped globals.css

The defensive ::selection rule for [data-user-selectable] message content
was in standalone.css, which is only loaded by the standalone app entry
(client/main.tsx) and the e2e harness. The npm package entry
(client/index.tsx via vite.lib.config.ts) never loads standalone.css, so
embedded deployments of @qwen-code/web-shell - including the reporter of
#8214 - did not receive the rule and still saw no selection highlight.

Move it to globals.css, which is imported by App.tsx and
WebShellTranscript.tsx and therefore ships with the component-scoped
stylesheet. Verified against the lib build: the rule now appears in
dist/index.js correctly scoped under
[data-web-shell-root][data-web-shell-shadcn]. The standalone app also
loads globals.css, so the e2e smoke pin still passes.

Addresses the review finding on standalone.css:119.

* test(web-shell): pin ::selection across all rows and in the lib bundle

Address review findings on the round-3 move to globals.css:

- The smoke e2e only sampled the first [data-user-selectable] row (the
  user row in this fixture). Assert the rule on every selectable row so
  a future narrowing to user rows keeps assistant rows covered.
- Nothing asserted the rule survives in the npm lib bundle - the
  deployment this fix exists for. Add a build-artifact test that parses
  the injected component CSS in dist/index.js and pins the scoped
  [data-user-selectable] ::selection rule under [data-web-shell-root].

* test(web-shell): assert ::selection on selectable wrapper rows, not descendants

Per review: querySelectorAll('[data-user-selectable] *') counts element
descendants, not the wrapper rows themselves - a single user row renders
4+ descendants, so the >=2 invariant did not actually enforce that both
roles are present. Match the [data-user-selectable] wrappers directly and
sample one descendant per row.

* test(web-shell): match ::selection lib-bundle pin by effect, not notation

Per review (R6-1): the pin matched an exact selector substring
(including the space) and an exact prop name, coupling to the current
notation. A maintainer switching 'background' to 'background-color'
(the CSS Pseudo-Elements-4 name) would fail this test with a misleading
message while the e2e pin stayed green. Match the two selector halves
independently and accept either prop name.

---------

Co-authored-by: Shaojin Wen <shaojin.wensj@alibaba-inc.com>
2026-08-04 12:33:51 +00:00
..
globals.css fix(web-shell): add explicit ::selection for message content in Firefox (#8417) 2026-08-04 12:33:51 +00:00
preflight.css fix(web-shell): isolate component styles from host CSS (#7466) 2026-07-22 02:21:17 +00:00
standalone.css feat(web-shell): show Settings and Daemon Status as an in-place panel (#6341) 2026-07-06 05:06:46 +00:00