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LibWeb: Add initial implementation of IntersectionObserver

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The main missing features are rootMargin, proper nested browsing
context support and content clip/clip-path support.

This makes images appear on some sites, such as YouTube and
howstuffworks.com.
This commit is contained in:
Luke Wilde 2023-07-06 23:44:07 +01:00 • committed by Andreas Kling
parent 6f8afd8cd9
commit 165abafb80
16 changed files with 664 additions and 22 deletions
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12
Userland/Libraries/LibWeb/IntersectionObserver/IntersectionObserver.idl
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@ -1,19 +1,21 @@
#import <DOM/Document.idl>
#import <DOM/Element.idl>
#import <DOM/Node.idl>
#import <IntersectionObserver/IntersectionObserverEntry.idl>
callback IntersectionObserverCallback = undefined (sequence<IntersectionObserverEntry> entries, IntersectionObserver observer);
[Exposed=(Window)]
[Exposed=(Window), UseNewAKString]
interface IntersectionObserver {
constructor(IntersectionObserverCallback callback, optional IntersectionObserverInit options = {});
readonly attribute (Element or Document)? root;
// FIXME: readonly attribute DOMString rootMargin;
// FIXME: `sequence<double>` should be `FrozenArray<double>`
readonly attribute sequence<double> thresholds;
undefined observe(Element target);
undefined unobserve(Element target);
undefined disconnect();
// FIXME:
// sequence<IntersectionObserverEntry> takeRecords();
sequence<IntersectionObserverEntry> takeRecords();
};
dictionary IntersectionObserverInit {