(I can also go ahead and update WPT in 
https://phabricator.services.mozilla.com/D234718 to verify, but WPT support 
is very limited in terms of Push API)

On Friday, April 11, 2025 at 2:58:00 PM UTC+2 Kagami Rosylight wrote:

> The implementation statuses here are mostly based on assumption, can we 
> have some test case to verify that? Especially when Peter is here who's 
> known with his great test pages 💜 (https://tests.peter.sh/)
>
> On Friday, April 11, 2025 at 2:54:55 PM UTC+2 Peter Beverloo wrote:
>
>> Hi Antonio,
>>
>> Thank you for working on this - this is a great change: especially on 
>> Android it's very easy for users to accidentally disable, and then 
>> immediately re-enable notification permission, without realising that they 
>> have to visit the site again in order to continue receiving notifications. 
>> This creates a convenient recovery path in the way the spec intended.
>>
>> We should monitor whether we could safely create a new subscription 
>> internally and pass it to the `pushsubscriptionchange` event, but as you 
>> mention it's not entirely clear what existing implementations of the event 
>> do. Manually creating a new subscription is safe in either scenario, and 
>> forward compatible with passing in one ourselves as `subscribe()` is 
>> designed to be called any number of times.
>>
>> Thanks,
>> Peter
>>
>> On Fri, Apr 11, 2025 at 1:46 PM Antonio Sartori <antonio...@chromium.org> 
>> wrote:
>>
>>> Contact emailsantonio...@chromium.org
>>>
>>> ExplainerNone
>>>
>>> Specification
>>> https://w3c.github.io/push-api/#the-pushsubscriptionchange-event
>>>
>>> Summary
>>>
>>> Fire the pushsubscriptionchange event in service workers when an origin 
>>> for which a push subscription existed in the past, but which was revoked 
>>> because of a permission change (from granted to deny/default), is 
>>> re-granted notification permission. The event will be fired with an empty 
>>> oldSubscription and newSubscription.
>>>
>>>
>>> Blink componentBlink>PushAPI 
>>> <https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3EPushAPI%22>
>>>
>>> Motivation
>>>
>>> This change is helpful for web developers and for users. On the one 
>>> hand, when regranting notification permissions, used are likely to expect 
>>> to start receiving again notifications right away. On the other hand, web 
>>> developers must basically keep trying resubscribing to notifications in 
>>> order to recover from a permission being ungranted and then granted again. 
>>> The specification supports the pushsubscriptionchange event, although is 
>>> relatively vague around the exact circumstances in which such event may or 
>>> should be fired.
>>>
>>>
>>> Initial public proposalNone
>>>
>>> TAG reviewNone
>>>
>>> TAG review statusNot applicable
>>>
>>> Risks
>>>
>>>
>>> Interoperability and Compatibility
>>>
>>> None
>>>
>>>
>>> *Gecko*: Shipped/Shipping (
>>> https://bugzilla.mozilla.org/show_bug.cgi?id=1497429) Firefox seems to 
>>> already implement a similar behavior, see 
>>> https://bugzilla.mozilla.org/show_bug.cgi?id=1497429
>>>
>>> *WebKit*: No signal Seems shipped, but couldn't figure out the exact 
>>> details. See 
>>> https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorkerGlobalScope/pushsubscriptionchange_event
>>>
>>> *Web developers*: No signals Likely positive, see for example 
>>> https://issues.chromium.org/issues/40129474
>>>
>>> *Other signals*:
>>>
>>> WebView application risks
>>>
>>> Does this intent deprecate or change behavior of existing APIs, such 
>>> that it has potentially high risk for Android WebView-based applications?
>>>
>>> None
>>>
>>>
>>> Debuggability
>>>
>>> None
>>>
>>>
>>> Is this feature fully tested by web-platform-tests 
>>> <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>
>>> ?No
>>>
>>> Flag name on about://flagsNone
>>>
>>> Finch feature nameNone
>>>
>>> Non-finch justificationNone
>>>
>>> Requires code in //chrome?False
>>>
>>> Tracking bughttps://issues.chromium.org/issues/407523313
>>>
>>> Launch bughttps://launch.corp.google.com/launch/4390563
>>>
>>> Estimated milestones
>>>
>>> M137
>>>
>>> Link to entry on the Chrome Platform Status
>>> https://chromestatus.com/feature/5147683423256576?gate=6273678305918976
>>>
>>> This intent message was generated by Chrome Platform Status 
>>> <https://chromestatus.com/>.
>>>
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>>> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAOzWxF6xvYb-0qkPaZbhNFuS86__DEg8curFPGRtuDak8x%3D31g%40mail.gmail.com?utm_medium=email&utm_source=footer>
>>> .
>>>
>>

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