169467 2017-03-10 07:44:43 -0800 iframe `window.parent` should return null when iframe element removed 2024-01-10 13:38:25 -0800 1 1 1 Unclassified WebKit Frames WebKit Nightly Build Mac OS X 10.11 RESOLVED CONFIGURATION CHANGED P2 Normal --- 1 lyza webkit-unassigned ahmad.saleem792 ap cdumez dbates oldest_to_newest 1285803 0 304043 lyza 2017-03-10 07:44:43 -0800 Created attachment 304043 window.parent should be null after iframe removed While working on some web-platform-tests regarding `window.parent` and `window.top` for nested browsing contexts[1], I happened on some unexpected behavior in Safari/Webkit regarding `window.parent`. When an `iframe` element is removed from a document, its associated browsing context should be discarded. For a nested browsing container to be the parent or child of another browsing context, both parties need to be connected and active.[2][3] Expected behavior: When an iframe is removed from a document, its previous browsing context (window) should return `null` for `window.parent`. Actual behavior: When an iframe is removed from a document, Webkit/Safari continues to return the prior-associated `parent` browsing context. Steps to reproduce: 1. Append an iframe `iframe` to top-level browsing context's active document's `body` 2. Let `iframeWindow` be the current value of `iframe.contentWindow`. 3. Remove `iframe` from `document` 4. Observe the returned value of `iframeWindow.parent` (it should be `null`) (Test case attached). Behavior observed in * Safari 10.0.3 (11602.4.8.0.1) * Webkit Nightly 10.0.3 (11602.4.8.0.1, r213646) [1]: https://github.com/w3c/web-platform-tests/pull/5105 [2]: https://html.spec.whatwg.org/#nested-browsing-contexts [3]: https://html.spec.whatwg.org/#the-iframe-element 2004197 1 ahmad.saleem792 2024-01-10 13:38:25 -0800 All browsers (Safari 17.2.1, Chrome Canary 122 and Firefox Nightly 123) show 'true', 'true' in console. Plus Safari Technology Preview 185 passes all tests: https://wpt.fyi/results/html/browsers/windows/nested-browsing-contexts?label=master&label=experimental&aligned= Marking this as 'RESOLVED CONFIGURATION CHANGED'. 304043 2017-03-10 07:44:43 -0800 2017-03-10 07:44:43 -0800 window.parent should be null after iframe removed window-parent-null.html text/html 544 lyza PCFkb2N0eXBlIGh0bWw+CjxodG1sPgo8aGVhZD4KPG1ldGEgY2hhcnNldD0idXRmLTgiPgo8dGl0 bGU+d2luZG93LnBhcmVudDwvdGl0bGU+CjxzY3JpcHQ+CmZ1bmN0aW9uIHdpbmRvd1BhcmVudCgp IHsKICB2YXIgaWZyYW1lID0gZG9jdW1lbnQuY3JlYXRlRWxlbWVudCgnaWZyYW1lJyk7CgogIGlm cmFtZS5vbmxvYWQgPSBmdW5jdGlvbiAoKSB7CiAgICB2YXIgaVdpbmRvdyA9IGlmcmFtZS5jb250 ZW50V2luZG93OwogICAgY29uc29sZS5sb2coaVdpbmRvdy5wYXJlbnQgPT09IHdpbmRvdyk7IC8v IFNob3VsZCBiZSBgdHJ1ZWAKICAgIGRvY3VtZW50LmJvZHkucmVtb3ZlQ2hpbGQoaWZyYW1lKTsK ICAgIGNvbnNvbGUubG9nKGlXaW5kb3cucGFyZW50ID09PSBudWxsKTsgLy8gU2hvdWxkIGJlIGB0 cnVlYAogIH07CgogIGRvY3VtZW50LmJvZHkuYXBwZW5kQ2hpbGQoaWZyYW1lKTsKfQo8L3Njcmlw dD4KPC9oZWFkPgo8Ym9keSBvbmxvYWQ9IndpbmRvd1BhcmVudCgpIj4KICA8aDE+d2luZG93LnBh cmVudCB0ZXN0PC9oMT4KPC9ib2R5Pgo8L2h0bWw+Cg==