[resize-observer-1] Invoke callback with observer as 2nd argument and this value
#5383
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Neither me nor greg are working on ResizeObserver right now, you should pick a current reviewer. |
ashkulz
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Aug 8, 2020
…is` value https://bugs.webkit.org/show_bug.cgi?id=215162 Reviewed by Geoffrey Garen. LayoutTests/imported/w3c: * web-platform-tests/intersection-observer/observer-callback-arguments-expected.txt: * web-platform-tests/performance-timeline/po-observe.any-expected.txt: * web-platform-tests/performance-timeline/po-observe.any.worker-expected.txt: * web-platform-tests/resize-observer/eventloop-expected.txt: * web-platform-tests/resize-observer/observe-expected.txt: Source/WebCore: This change utilizes CallbackThisObject] IDL attribute to invoke a callback of IntersectionObserver [1], ResizeObserver [2], and PerformanceObserver [3] with correct `this` value of its observer, aligning WebKit with Blink and Gecko. Tests: imported/w3c/web-platform-tests/intersection-observer/observer-callback-arguments.html imported/w3c/web-platform-tests/resize-observer/observe.html imported/w3c/web-platform-tests/performance-timeline/po-observe.any.js [1] https://w3c.github.io/IntersectionObserver/#notify-intersection-observers-algo (step 3.4) [2] w3c/csswg-drafts#5383 [3] https://w3c.github.io/performance-timeline/#queue-the-performanceobserver-task (step 3.3.5) * html/LazyLoadImageObserver.cpp: * page/IntersectionObserver.cpp: (WebCore::IntersectionObserver::notify): * page/IntersectionObserverCallback.h: * page/IntersectionObserverCallback.idl: * page/PerformanceObserver.cpp: (WebCore::PerformanceObserver::deliver): * page/PerformanceObserverCallback.h: * page/PerformanceObserverCallback.idl: * page/ResizeObserver.cpp: (WebCore::ResizeObserver::deliverObservations): * page/ResizeObserverCallback.h: * page/ResizeObserverCallback.idl: LayoutTests: * performance-api/performance-observer-basic-expected.txt: git-svn-id: http://svn.webkit.org/repository/webkit/trunk@265397 268f45cc-cd09-0410-ab3c-d52691b4dbfc
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shvaikalesh marked as non substantive for IPR from ash-nazg. |
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This PR aligns
ResizeObserverspec (step 2.4) with implementations (WPT: test, results) and other observers:MutationObserver(step 5.4);IntersectionObserver(step 3.4);PerformanceObserver(step 3.3.5).Passing
observertocallbackenables users to reuse a singlecallbackfunction, which invokesunobservewith entry'starget, for multipleResizeObserverinstances.