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LibWeb: Implement loading=lazy for <img> elements

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Luke Wilde 2023-07-07 00:00:06 +01:00 • committed by Andreas Kling
parent 165abafb80
commit 71f6e5c942
4 changed files with 113 additions and 4 deletions
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7
Userland/Libraries/LibWeb/HTML/HTMLImageElement.h
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@ -72,6 +72,7 @@ public:
Eager,
};
[[nodiscard]] LazyLoading lazy_loading() const;
[[nodiscard]] bool will_lazy_load() const;
// https://html.spec.whatwg.org/multipage/images.html#upgrade-the-pending-request-to-the-current-request
void upgrade_pending_request_to_current_request();
@ -83,6 +84,8 @@ public:
virtual RefPtr<Gfx::Bitmap const> current_image_bitmap(Gfx::IntSize = {}) const override;
virtual void set_visible_in_viewport(bool) override;
JS::SafeFunction<void()> take_lazy_load_resumption_steps(Badge<DOM::Document>);
private:
HTMLImageElement(DOM::Document&, DOM::QualifiedName);
@ -116,6 +119,10 @@ private:
RefPtr<ImageRequest> m_pending_request;
SourceSet m_source_set;
// https://html.spec.whatwg.org/multipage/urls-and-fetching.html#lazy-load-resumption-steps
// Each img and iframe element has associated lazy load resumption steps, initially null.
JS::SafeFunction<void()> m_lazy_load_resumption_steps;
};
}