html: The queued <media> `volumechange` event should be cancellable #40763

tharkum · 2025-11-20T11:41:52Z

Following the HTML specification, on the volume or mute attrubute changes the user agent must queue a media element task given the media element to fire an event named volumechange at the media element (the generation_id value will be captured to allow cancel this task - media-element-load-algorithm steps 3-5)

See https://html.spec.whatwg.org/multipage/#event-media-volumechange
See https://html.spec.whatwg.org/multipage/#media-element-load-algorithm

Changed the naming of the playbackRate and defaultPlaybackRate members to match Rust naming conventions (snake_case).

Testing: Added the cancellable subtest to event_volumechange test

html/semantics/embedded-content/media-elements/event_volumechange.html

github-actions · 2025-11-20T11:42:26Z

🔨 Triggering try run (#19535681410) for Linux (WPT)

github-actions · 2025-11-20T12:09:51Z

Test results for linux-wpt from try job (#19535681410):

Flaky unexpected result (38)

OK /IndexedDB/idbfactory_open.any.html
- FAIL [expected PASS] subtest: Calling open() with version argument 1.5 should not throw.
```
assert_equals: version expected 1 but got 9007199254740991
```
CRASH [expected PASS] /_mozilla/shadow-dom/move-element-with-ua-shadow-tree-crash.html (#39473)
OK /_mozilla/webxr/create_session.https.html
- FAIL [expected PASS] subtest: create_session
```
can't access property "simulateDeviceConnection", navigator.xr.test is undefined
```

OK /_mozilla/webxr/obtain_frame.https.html

FAIL [expected PASS] subtest: obtain_frame

promise_test: Unhandled rejection with value: object "TypeError: can't access property "simulateDeviceConnection", navigator.xr.test is undefined"

CRASH [expected OK] /_webgl/conformance/glsl/bugs/struct-constructor-highp-bug.html
CRASH [expected OK] /_webgl/conformance/ogles/GL/pow/pow_001_to_008.html
CRASH [expected OK] /_webgl/conformance/rendering/gl-clear.html
CRASH [expected OK] /_webgl/conformance/textures/canvas_sub_rectangle/tex-2d-alpha-alpha-unsigned_byte.html
CRASH [expected OK] /_webgl/conformance/textures/image_bitmap_from_blob/tex-2d-alpha-alpha-unsigned_byte.html
CRASH [expected OK] /_webgl/conformance/textures/image_data/tex-2d-rgb-rgb-unsigned_short_5_6_5.html
CRASH [expected OK] /_webgl/conformance2/context/constants-and-properties-2.html
CRASH [expected OK] /credential-management/idlharness.https.window.html
FAIL [expected PASS] /css/css-backgrounds/background-size-041.html
FAIL [expected PASS] /css/css-backgrounds/border-image-repeat-space-9.html
OK /css/css-cascade/layer-font-face-override.html (#35935)
- PASS [expected FAIL] subtest: @font-face override update with appended sheet 1
- PASS [expected FAIL] subtest: @font-face override update with appended sheet 2
OK /custom-elements/form-associated/ElementInternals-setFormValue.html (#29174)
- PASS [expected FAIL] subtest: Single value - empty name exists
TIMEOUT [expected OK] /fetch/api/redirect/redirect-keepalive.https.any.html (#32153)
- TIMEOUT [expected PASS] subtest: [keepalive][iframe][load] mixed content redirect; setting up
```
Test timed out
```
ERROR [expected OK] /fetch/api/response/response-body-read-task-handling.html
- PASS [expected FAIL] subtest: reading from a body stream should occur in a microtask scope
OK /fetch/content-length/api-and-duplicate-headers.any.worker.html (#35197)
- FAIL [expected PASS] subtest: fetch() and duplicate Content-Length/Content-Type headers
```
promise_test: Unhandled rejection with value: object "TypeError: Network error occurred"
```
TIMEOUT /fetch/metadata/generated/css-images.sub.tentative.html (#29047)
- TIMEOUT [expected PASS] subtest: background-image sec-fetch-dest - Not sent to non-trustworthy same-site destination
```
Test timed out
```
- TIMEOUT [expected PASS] subtest: background-image sec-fetch-storage-access - Not sent to non-trustworthy same-origin destination
```
Test timed out
```
OK /html/browsers/browsing-the-web/navigating-across-documents/005.html (#27062)
- FAIL [expected PASS] subtest: Link with onclick navigation and href navigation
```
assert_equals: expected "href" but got "click"
```
OK /html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin.window.html (#29049)
- PASS [expected FAIL] subtest: Same-origin navigation started from unload handler must be ignored
OK /html/browsers/history/the-history-interface/traverse_the_history_4.html (#21383)
- PASS [expected FAIL] subtest: Multiple history traversals, last would be aborted

OK /html/dom/documents/resource-metadata-management/document-cookie.html (#40673)

FAIL [expected PASS] subtest: document has no cookie

assert_equals: expected "" but got "domain-attribute-matches-host=0"

FAIL [expected PASS] subtest: document.cookie

assert_equals: expected "" but got "domain-attribute-matches-host=0"

FAIL [expected PASS] subtest: document.cookie 1

assert_equals: expected "a=b" but got "a=b; domain-attribute-matches-host=0"

FAIL [expected PASS] subtest: document.cookie 2

assert_equals: expected "" but got "a=b; domain-attribute-matches-host=0"

OK [expected TIMEOUT] /html/infrastructure/urls/base-url/document-base-url-window-initiator-is-not-opener.https.window.html (#30970)
TIMEOUT /html/interaction/focus/the-autofocus-attribute/supported-elements.html (#24145)
- FAIL [expected TIMEOUT] subtest: Element with tabindex should support autofocus
```
assert_equals: expected "SPAN" but got "BODY"
```
- TIMEOUT [expected NOTRUN] subtest: Non-HTMLElement should not support autofocus
```
Test timed out
```
OK /html/semantics/document-metadata/the-meta-element/pragma-directives/attr-meta-http-equiv-refresh/allow-scripts-flag-changing-1.html (#39694)
- PASS [expected FAIL] subtest: Meta refresh is blocked by the allow-scripts sandbox flag at its creation time, not when refresh comes due
OK [expected ERROR] /html/semantics/embedded-content/media-elements/event_timeupdate_noautoplay.html (#25046)
OK /html/semantics/forms/form-submission-0/multipart-formdata.window.html (#28725)
- PASS [expected FAIL] subtest: multipart/form-data: 0x00 in value (formdata event)
OK /html/semantics/forms/form-submission-0/text-plain.window.html (#28687)
- FAIL [expected PASS] subtest: text/plain: Basic File test (normal form)
```
assert_equals: expected "basic=file-test.txt\r\n" but got ""
```
OK /html/semantics/forms/form-submission-0/urlencoded2.window.html (#28687)
- FAIL [expected PASS] subtest: application/x-www-form-urlencoded: Basic test (formdata event)
```
assert_equals: expected "basic=test" but got ""
```
- FAIL [expected PASS] subtest: application/x-www-form-urlencoded: Basic File test (normal form)
```
assert_equals: expected "basic=file-test.txt" but got ""
```
- PASS [expected FAIL] subtest: application/x-www-form-urlencoded: \r\n in value (normal form)

OK /html/semantics/scripting-1/the-script-element/execution-timing/077.html (#22139)

FAIL [expected PASS] subtest: adding several types of scripts through the DOM and removing some of them confuses scheduler

assert_array_equals: expected property 1 to be "Script #1 ran" but got "Script #3 ran" (expected array ["Script #2 ran", "Script #1 ran", "Script #3 ran", "Script #4 ran"] got ["Script #2 ran", "Script #3 ran", "Script #4 ran", "Script #1 ran"])

OK /preload/prefetch-document.html (#37210)
- FAIL [expected PASS] subtest: different-site document prefetch with 'as=document' should not be consumed
```
assert_equals: expected 2 but got 1
```
CRASH [expected OK] /trusted-types/Element-setAttribute-setAttributeNS-sinks.tentative.html
CRASH [expected OK] /upgrade-insecure-requests/gen/srcdoc-inherit.meta/upgrade/worklet-animation-import-data.https.html
CRASH [expected TIMEOUT] /wasm/webapi/empty-body.any.worker.html
CRASH [expected TIMEOUT] /webaudio/the-audio-api/the-audiocontext-interface/promise-methods-after-discard.html
ERROR [expected OK] /workers/baseurl/alpha/import-in-moduleworker.html (#21315)

Stable unexpected results that are known to be intermittent (25)

OK /IndexedDB/idbobjectstore_getAll.any.html (#39276)
- PASS [expected FAIL] subtest: Get all values with transaction.commit()
OK /IndexedDB/idbobjectstore_getAll.any.worker.html (#39400)
- PASS [expected FAIL] subtest: Get all values with transaction.commit()
OK /IndexedDB/transaction-deactivation-timing.any.html (#38772)
- PASS [expected FAIL] subtest: New transactions are deactivated before next task
FAIL [expected PASS] /_mozilla/mozilla/sslfail.html (#10760)
TIMEOUT [expected OK] /_mozilla/mozilla/window_resize_event.html (#36741)
- TIMEOUT [expected PASS] subtest: Popup onresize event fires after resizeTo
```
Test timed out
```
OK /content-security-policy/frame-ancestors/frame-ancestors-path-ignored.window.html (#36468)
- FAIL [expected PASS] subtest: A 'frame-ancestors' CSP directive with a URL that includes a path should be ignored.
```
assert_unreached: The IFrame should have been blocked (or cross-origin). It wasn't. Reached unreachable code
```
TIMEOUT /content-security-policy/inheritance/location-reload.html (#38983)
- PASS [expected FAIL] subtest: location.reload() of empty iframe.
OK /css/css-fonts/generic-family-keywords-001.html (#37467)
- FAIL [expected PASS] subtest: @font-face matching for quoted and unquoted generic(khmer-mul)
```
assert_equals: quoted generic(khmer-mul) matches  @font-face rule expected 50 but got 30
```
- FAIL [expected PASS] subtest: @font-face matching for quoted and unquoted generic(nastaliq)
```
assert_equals: quoted generic(nastaliq) matches  @font-face rule expected 50 but got 30
```
OK /css/css-fonts/generic-family-keywords-003.html (#38994)
- PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted system-ui (drawing text in a canvas)
- PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted generic(nastaliq) (drawing text in a canvas)
OK /fetch/metadata/generated/css-font-face.https.sub.tentative.html (#32732)
- PASS [expected FAIL] subtest: sec-fetch-user
OK /fetch/metadata/generated/css-font-face.sub.tentative.html (#34624)
- PASS [expected FAIL] subtest: sec-fetch-storage-access - Not sent to non-trustworthy same-origin destination
- PASS [expected FAIL] subtest: sec-fetch-storage-access - Not sent to non-trustworthy same-site destination
- FAIL [expected PASS] subtest: sec-fetch-storage-access - Not sent to non-trustworthy cross-site destination
```
promise_test: Unhandled rejection with value: object "Error: Failed to query for recorded headers."
```
OK /fetch/metadata/generated/element-img-environment-change.https.sub.html (#30111)
- FAIL [expected PASS] subtest: sec-fetch-site - Same-Origin -> Same-Site -> Same-Origin redirect, no attributes
```
promise_test: Unhandled rejection with value: object "Error: Failed to query for recorded headers."
```
- FAIL [expected PASS] subtest: sec-fetch-mode - attributes: crossorigin
```
promise_test: Unhandled rejection with value: object "Error: Failed to query for recorded headers."
```
- PASS [expected FAIL] subtest: sec-fetch-mode - attributes: crossorigin=anonymous
- FAIL [expected PASS] subtest: sec-fetch-mode - attributes: crossorigin=use-credentials
```
promise_test: Unhandled rejection with value: object "Error: Failed to query for recorded headers."
```
- PASS [expected FAIL] subtest: sec-fetch-dest - no attributes
OK /fetch/metadata/generated/element-img-environment-change.sub.html (#30111)
- PASS [expected FAIL] subtest: sec-fetch-mode - Not sent to non-trustworthy same-origin destination, no attributes
- PASS [expected FAIL] subtest: sec-fetch-mode - Not sent to non-trustworthy cross-site destination, no attributes
- PASS [expected FAIL] subtest: sec-fetch-dest - Not sent to non-trustworthy cross-site destination, no attributes
- PASS [expected FAIL] subtest: sec-fetch-storage-access - Not sent to non-trustworthy same-origin destination, no attributes
- FAIL [expected PASS] subtest: sec-fetch-site - HTTPS downgrade-upgrade, no attributes
```
promise_test: Unhandled rejection with value: object "Error: Failed to query for recorded headers."
```
TIMEOUT [expected CRASH] /fetch/metadata/window-open.https.sub.html (#40339)
OK /html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-cross-origin.sub.window.html (#29056)
- FAIL [expected PASS] subtest: Cross-origin navigation started from unload handler must be ignored
```
promise_test: Unhandled rejection with value: object "SecurityError: The operation is insecure."
```

OK /html/browsers/windows/embedded-opener-remove-frame.html (#23867)

FAIL [expected PASS] subtest: opener of discarded auxiliary browsing context

assert_object_equals: property "get" expected function "function opener() {
    [native code]
}" got function "function opener() {
    [native code]
}"

ERROR [expected OK] /html/infrastructure/common-dom-interfaces/collections/domstringlist.html (#40665)
OK [expected TIMEOUT] /html/interaction/focus/the-autofocus-attribute/autofocus-dialog.html (#29087)
- FAIL [expected TIMEOUT] subtest: <dialog>-contained autofocus element gets focused when the dialog is shown
```
assert_equals: expected "DIV" but got "BODY"
```
OK /navigation-timing/test-navigation-type-reload.html (#33334)
- PASS [expected FAIL] subtest: Reload domComplete > Original domComplete
- PASS [expected FAIL] subtest: Reload domContentLoadedEventEnd > Original domContentLoadedEventEnd
- PASS [expected FAIL] subtest: Reload domContentLoadedEventStart > Original domContentLoadedEventStart
- PASS [expected FAIL] subtest: Reload domInteractive > Original domInteractive
- PASS [expected FAIL] subtest: Reload fetchStart > Original fetchStart
- PASS [expected FAIL] subtest: Reload loadEventEnd > Original loadEventEnd
- PASS [expected FAIL] subtest: Reload loadEventStart > Original loadEventStart
OK /preload/preload-error.sub.html (#37177)
- PASS [expected FAIL] subtest: 404 (fetch): main
- PASS [expected FAIL] subtest: CORS (fetch): main
OK /reporting/same-origin-same-site-credentials.https.sub.html (#40479)
- FAIL [expected PASS] subtest: Reporting endpoints received credentials.
```
assert_equals: No additional cookies were received expected 4 but got 5
```
TIMEOUT [expected OK] /trusted-types/trusted-types-navigation.html?01-05 (#38975)
- TIMEOUT [expected PASS] subtest: Navigate a window via anchor with javascript:-urls in report-only mode.
```
Test timed out
```
- NOTRUN [expected PASS] subtest: Navigate a window via anchor with javascript:-urls w/ default policy in report-only mode.
- NOTRUN [expected PASS] subtest: Navigate a frame via anchor with javascript:-urls in enforcing mode.
OK /trusted-types/trusted-types-navigation.html?26-30 (#38807)
- PASS [expected FAIL] subtest: Navigate a window via form-submission with javascript:-urls in report-only mode.
- PASS [expected FAIL] subtest: Navigate a frame via form-submission with javascript:-urls in enforcing mode.
OK [expected TIMEOUT] /trusted-types/trusted-types-navigation.html?31-35 (#38034)
- PASS [expected TIMEOUT] subtest: Navigate a frame via form-submission with javascript:-urls w/ default policy in report-only mode.
- FAIL [expected NOTRUN] subtest: Navigate a window via form-submission with javascript:-urls w/ a default policy throwing an exception in enforcing mode.
```
promise_test: Unhandled rejection with value: "Unexpected message received: \"No securitypolicyviolation reported!\""
```
- FAIL [expected NOTRUN] subtest: Navigate a window via form-submission with javascript:-urls w/ a default policy throwing an exception in report-only mode.
```
promise_test: Unhandled rejection with value: "Unexpected message received: \"No securitypolicyviolation reported!\""
```
- FAIL [expected NOTRUN] subtest: Navigate a window via form-submission with javascript:-urls w/ a default policy making the URL invalid in enforcing mode.
```
promise_test: Unhandled rejection with value: "Unexpected message received: \"No securitypolicyviolation reported!\""
```
OK [expected ERROR] /webxr/render_state_update.https.html (#27535)

github-actions · 2025-11-20T12:10:00Z

✨ Try run (#19535681410) succeeded.

TimvdLippe

The changes LGTM, but please add a WPT test, given none started passing with this fix.

servo-wpt-sync · 2025-11-20T13:19:28Z

🤖 Opened new upstream WPT pull request (web-platform-tests/wpt#56139) with upstreamable changes.

servo-wpt-sync · 2025-11-20T13:20:15Z

✍ Updated existing upstream WPT pull request (web-platform-tests/wpt#56139) title and body.

servo-wpt-sync · 2025-11-20T13:29:12Z

📝 Transplanted new upstreamable changes to existing upstream WPT pull request (web-platform-tests/wpt#56139).

servo-wpt-sync · 2025-11-20T13:29:54Z

✍ Updated existing upstream WPT pull request (web-platform-tests/wpt#56139) title and body.

Following the HTML specification, on the `volume` or `mute` attrubute changes the user agent must queue a media element task given the media element to fire an event named `volumechange` at the media element (the `generation_id` value will be captured to allow cancel this task - `media-element-load-algorithm` steps 3-5) See https://html.spec.whatwg.org/multipage/#event-media-volumechange See https://html.spec.whatwg.org/multipage/#media-element-load-algorithm Changed the naming of the `playbackRate` and `defaultPlaybackRate` members to match Rust naming conventions (`snake_case`). Testing: Added the `cancellable` subtest to `event_volumechange` test - html/semantics/embedded-content/media-elements/event_volumechange.html Signed-off-by: Andrei Volykhin <andrei.volykhin@gmail.com>

tharkum · 2025-11-20T13:34:55Z

Added MANIFEST change
Fixed name typo in subtest

servo-wpt-sync · 2025-11-20T13:41:30Z

📝 Transplanted new upstreamable changes to existing upstream WPT pull request (web-platform-tests/wpt#56139).

tharkum requested a review from gterzian as a code owner November 20, 2025 11:41

servo-highfive added the S-awaiting-review There is new code that needs to be reviewed. label Nov 20, 2025

tharkum added the T-linux-wpt Do a try run of the WPT label Nov 20, 2025

github-actions bot removed the T-linux-wpt Do a try run of the WPT label Nov 20, 2025

tharkum requested review from TimvdLippe, jdm and mrobinson November 20, 2025 12:20

TimvdLippe requested changes Nov 20, 2025

View reviewed changes

servo-highfive added S-needs-code-changes Changes have not yet been made that were requested by a reviewer. and removed S-awaiting-review There is new code that needs to be reviewed. labels Nov 20, 2025

tharkum force-pushed the html-media-volumechange-event branch from e49a9cc to 570bf30 Compare November 20, 2025 13:16

servo-highfive added S-awaiting-review There is new code that needs to be reviewed. and removed S-needs-code-changes Changes have not yet been made that were requested by a reviewer. labels Nov 20, 2025

tharkum requested a review from TimvdLippe November 20, 2025 13:16

servo-wpt-sync mentioned this pull request Nov 20, 2025

html: The queued <media> volumechange event should be cancellable web-platform-tests/wpt#56139

Merged

tharkum force-pushed the html-media-volumechange-event branch from 570bf30 to 33fe43b Compare November 20, 2025 13:26

tharkum force-pushed the html-media-volumechange-event branch from 33fe43b to f9319e9 Compare November 20, 2025 13:34

TimvdLippe approved these changes Nov 20, 2025

View reviewed changes

servo-highfive removed the S-awaiting-review There is new code that needs to be reviewed. label Nov 20, 2025

TimvdLippe added this pull request to the merge queue Nov 20, 2025

servo-highfive added the S-awaiting-merge The PR is in the process of compiling and running tests on the automated CI. label Nov 20, 2025

Merged via the queue into servo:main with commit bc9e8d2 Nov 20, 2025
32 checks passed

servo-highfive removed the S-awaiting-merge The PR is in the process of compiling and running tests on the automated CI. label Nov 20, 2025

tharkum deleted the html-media-volumechange-event branch November 24, 2025 07:14

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