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LibWeb: Flesh out implementation of ResizeObserver interfaces

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Adds the initial implementation for interfaces defined in the
ResizeObserver specification. These interfaces will be used to
construct and send observation events in the upcoming changes.
This commit is contained in:
Aliaksandr Kalenik 2024-02-19 05:06:39 +01:00 • committed by Andreas Kling
parent fb4c632309
commit fb8edcea00
15 changed files with 494 additions and 13 deletions
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17
Userland/Libraries/LibWeb/DOM/Document.cpp
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@ -95,6 +95,8 @@
#include <LibWeb/Page/Page.h>
#include <LibWeb/Painting/ViewportPaintable.h>
#include <LibWeb/PermissionsPolicy/AutoplayAllowlist.h>
#include <LibWeb/ResizeObserver/ResizeObserver.h>
#include <LibWeb/ResizeObserver/ResizeObserverEntry.h>
#include <LibWeb/SVG/SVGElement.h>
#include <LibWeb/SVG/SVGTitleElement.h>
#include <LibWeb/SVG/TagNames.h>
@ -453,6 +455,9 @@ void Document::visit_edges(Cell::Visitor& visitor)
for (auto& observer : m_intersection_observers)
visitor.visit(observer);
for (auto& observer : m_resize_observers)
visitor.visit(observer);
for (auto& image : m_shared_image_requests)
visitor.visit(image.value);
@ -3161,6 +3166,18 @@ void Document::unregister_intersection_observer(Badge<IntersectionObserver::Inte
VERIFY(was_removed);
}
void Document::register_resize_observer(Badge<ResizeObserver::ResizeObserver>, ResizeObserver::ResizeObserver& observer)
{
m_resize_observers.append(observer);
}
void Document::unregister_resize_observer(Badge<ResizeObserver::ResizeObserver>, ResizeObserver::ResizeObserver& observer)
{
m_resize_observers.remove_first_matching([&](auto& registered_observer) {
return registered_observer.ptr() == &observer;
});
}
// https://www.w3.org/TR/intersection-observer/#queue-an-intersection-observer-task
void Document::queue_intersection_observer_task()
{