258068 2023-06-14 02:15:37 -0700 transient activation duration of Clipboard.readText is not 5 secs 2023-06-21 02:16:14 -0700 1 1 1 Unclassified WebKit New Bugs WebKit Nightly Build iPhone / iPad iOS 16 NEW https://bugs.webkit.org/show_bug.cgi?id=239832 InRadar P2 Normal --- 1 jokeygeek webkit-unassigned dino webkit-bug-importer wenson_hsieh oldest_to_newest 1961520 0 466690 jokeygeek 2023-06-14 02:15:37 -0700 Created attachment 466690 iOS Safari log of the use case in description Use Case: During our testing of the Clipboard.readText WebAPI on iOS Safari with TouchEnd events, we observed that the Promise would be rejected by iOS Safari if the duration between the TouchStart and TouchEnd events exceeded approximately 750ms. According to a relevant discussion on the W3C Github thread, the WebKit team has indicated that they will consider increasing the transient activation duration to 5 seconds. - https://github.com/w3c/clipboard-apis/issues/75#issuecomment-1125155111 There is a related WebKit bug that has been closed, which addresses increasing the transient activation duration to 5 seconds. - https://bugs.webkit.org/show_bug.cgi?id=239832 - increase transient activation duration to 5s Based on our testing of the UserActivation WebAPI on iOS 16.4, which is the version that officially supports this API, we observed that the UserActivation.isActive sometimes would be false in the above use case, and event it sometimes would be true, the Promise from Clipboard.readText was still being rejected. Considering the validity of the 5-second fix, shouldn't the Clipboard.readText WebAPI set isActive to true when the last user activation has not expired within 5 seconds? Refer to the relevant section of the HTML specification for more details on transient activation: - https://html.spec.whatwg.org/multipage/interaction.html#transient-activation - "The transient activation state is considered expired if it becomes false because the transient activation duration time has elapsed since the last user activation. Note that it can become false even before the expiry time through an activation consumption." I have attached the log from the ground test for checking the Clipboard API on iOS 16.4. 1962755 1 webkit-bug-importer 2023-06-21 02:16:14 -0700 <rdar://problem/111089598> 466690 2023-06-14 02:15:37 -0700 2023-06-14 02:15:37 -0700 iOS Safari log of the use case in description Console.log application/octet-stream 4604 jokeygeek W0xvZ10gdG91Y2hTdGFydDogdGltZXN0YW1wPSDigJMgMzY4OTMgKG1haW4uanMsIGxpbmUgMzIp CltMb2ddIHRvdWNoRW5kOiB0aW1lU3RhbXA9IOKAkyAzNzQxMSAobWFpbi5qcywgbGluZSA0NykK W0xvZ10gRHVyYXRpb24gb2YgdG91Y2hTdGFydCB0byB0b3VjaEVuZDogNTE4IG1zIChtYWluLmpz LCBsaW5lIDQ5KQpbTG9nXSBVc2VyQWN0aXZhdGlvbjogIOKAkyBVc2VyQWN0aXZhdGlvbiB7aGFz QmVlbkFjdGl2ZTogdHJ1ZSwgaXNBY3RpdmU6IHRydWV9IChtYWluLmpzLCBsaW5lIDUxKQpVc2Vy QWN0aXZhdGlvbiB7aGFzQmVlbkFjdGl2ZTogdHJ1ZSwgaXNBY3RpdmU6IHRydWV9VXNlckFjdGl2 YXRpb24KW0xvZ10gY2xpcGJvYXJkLnJlYWRUZXh0IHN1Y2Nlc3MsIHRleHQ9IOKAkyAiUGFzdGVU ZXh0VGVzdCIgKG1haW4uanMsIGxpbmUgNTcpCltMb2ddIHRvdWNoU3RhcnQ6IHRpbWVzdGFtcD0g 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