114530 2013-04-12 13:21:25 -0700 requestFullscreen on the current fullscreen element should fire fullscreen error. 2026-10-15 10:07:42 -0700 1 1 1 Unclassified WebKit WebCore Misc. 528+ (Nightly build) Unspecified Unspecified RESOLVED WONTFIX https://github.com/GoogleChrome/chrome-app-samples/blob/master/window-state/window.html P2 Normal --- 276855 1 jer.noble fred.wang ahmad.saleem792 ap bfulgham commit-queue esprehn+autocc rniwa scheib simon.fraser zalan oldest_to_newest 874923 0 jer.noble 2013-04-12 13:21:25 -0700 Cloned from <http://code.google.com/p/chromium/issues/detail?id=229803>: UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/28.0.1472.0 Safari/537.36 Steps to reproduce the problem: 1. Install the Window State example from the chrome-app-samples repo (https://github.com/GoogleChrome/chrome-app-samples/tree/master/window-state ) 2. Launch it, then "Enter" next to HTML5 fullscreen 3. (App goes fullscreen) Click "Enter" again 4. Click "Exit" What is the expected behavior? App stops being fullscreen What went wrong? App stays fullscreen. Clicking "Exit" again will cause it to stop being fullscreen. You have to press "Exit" as many times as you've pressed "Enter". (These buttons are just calling webkitRequestFullscreen and webkitExitFullscreen respectively.) WebStore page: Did this work before? No Chrome version: 28.0.1472.0 Channel: canary OS Version: OS X 10.7.5 874925 1 jer.noble 2013-04-12 13:22:04 -0700 schieb@chromium.org commented <http://code.google.com/p/chromium/issues/detail?id=229803#c3> in the original bug: "This is an error in WebKit & Blink (likely in Document.cpp), and not apps specific. Load https://github.com/GoogleChrome/chrome-app-samples/blob/master/window-state/window.html in Chrome and the same behavior exists. The fullscreen specification https://dvcs.w3.org/hg/fullscreen/raw-file/tip/Overview.html does express this as an error, in: - requestFullscreen() method must run these steps: - If any of the following conditions are true, ... fullscreenerror: - "The context object's node document fullscreen element stack is not empty and its top element is not an ancestor of the context object." In this case, the element is already fullscreen and the top of the stack, the element is not an ancestor of its self. A work around is for an application to check document.webkitFullscreenElement before requesting fullscreen, so as to not make the same element fullscreen multiple times." 877489 2 jer.noble 2013-04-17 14:17:23 -0700 *** Bug 114767 has been marked as a duplicate of this bug. *** 877497 3 198612 jer.noble 2013-04-17 14:25:23 -0700 Created attachment 198612 Patch 1003704 4 198612 bfulgham 2014-04-24 10:30:46 -0700 Comment on attachment 198612 Patch r=me. 1897887 5 ahmad.saleem792 2022-09-12 09:18:52 -0700 This r+ patch didn't landed and I was not able to find reference to this code in Webkit GitHub (might be searching wrong). Can anyone else see whether it is still an issue or need to be fixed or this is taken care of? Thanks! 2261758 6 fred.wang 2026-10-10 00:06:47 -0700 Pull request: https://github.com/WebKit/WebKit/pull/76578 2261760 7 fred.wang 2026-10-10 00:09:10 -0700 (In reply to Ahmad Saleem from comment #5) > This r+ patch didn't landed and I was not able to find reference to this > code in Webkit GitHub (might be searching wrong). > > Can anyone else see whether it is still an issue or need to be fixed or this > is taken care of? Thanks! @Ahmad Saleem: I just did it. And actually this patch is no longer needed, WebKit implements the correct behavior per the spec (i.e. a stack of fullscreen elements vs a single fullscreen element). The test has been updated in Chromium: https://source.chromium.org/chromium/chromium/src/+/main:third_party/blink/web_tests/fullscreen/full-screen-twice-newapi.html and it's passing in WebKit. Anyway I uploaded a PR to import this test, but feel free to close as WONTFIX if you prefer. 2262984 8 fred.wang 2026-10-12 22:54:12 -0700 > (In reply to Ahmad Saleem from comment #5) > The test has been updated in Chromium: > https://source.chromium.org/chromium/chromium/src/+/main:third_party/blink/ > web_tests/fullscreen/full-screen-twice-newapi.html and it's passing in > WebKit. > > Anyway I uploaded a PR to import this test, but feel free to close as > WONTFIX if you prefer. There is already a WPT test for that: LayoutTests/imported/w3c/web-platform-tests/fullscreen/api/element-request-fullscreen-twice.html So closing. 198612 2013-04-17 14:25:23 -0700 2014-04-24 10:30:45 -0700 Patch bug-114530-20130417142455.patch text/plain 7255 jer.noble U3VidmVyc2lvbiBSZXZpc2lvbjogMTQ4NjMzCmRpZmYgLS1naXQgYS9Tb3VyY2UvV2ViQ29yZS9D aGFuZ2VMb2cgYi9Tb3VyY2UvV2ViQ29yZS9DaGFuZ2VMb2cKaW5kZXggZTNkNDhkYWUzYmJkNWNj ZWQwYzVjY2VlZDllNWVlZDU4YWUyNzE4YS4uMWU0Yjk5ZjZmYTNkMTU1MmZkNDQyZmQxMGExMTc2 N2U4ODI4MGEwYyAxMDA2NDQKLS0tIGEvU291cmNlL1dlYkNvcmUvQ2hhbmdlTG9nCisrKyBiL1Nv dXJjZS9XZWJDb3JlL0NoYW5nZUxvZwpAQCAtMSwzICsxLDI3IEBACisyMDEzLTA0LTE3ICBKZXIg Tm9ibGUgIDxqZXIubm9ibGVAYXBwbGUuY29tPgorCisgICAgICAgIHJlcXVlc3RGdWxsc2NyZWVu IG9uIHRoZSBjdXJyZW50IGZ1bGxzY3JlZW4gZWxlbWVudCBzaG91bGQgZmlyZSBmdWxsc2NyZWVu IGVycm9yLgorICAgICAgICBodHRwczovL2J1Z3Mud2Via2l0Lm9yZy9zaG93X2J1Zy5jZ2k/aWQ9 MTE0NTMwCisKKyAgICAgICAgTWVyZ2Ugb2YgaHR0cHM6Ly9zcmMuY2hyb21pdW0ub3JnL3ZpZXd2 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