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LibWeb: Move viewport subscriptions from BrowsingContext to Document

With this change, elements that want to receive viewport rect updates
will need to register on document instead of the browsing context.

This change solves the problem where a browsing context for a document
is guaranteed to exist only while the document is active so browsing
context might not exit by the time DOM node that want to register is
constructed.

This is a part of preparation work before switching to navigables where
this issue becomes more visible.
This commit is contained in:
Aliaksandr Kalenik 2023-08-23 18:58:42 +02:00 committed by Andreas Kling
parent 48e9097aa4
commit 5ff7448fee
10 changed files with 66 additions and 61 deletions

View file

@ -13,16 +13,16 @@ namespace Web::Layout {
VideoBox::VideoBox(DOM::Document& document, DOM::Element& element, NonnullRefPtr<CSS::StyleProperties> style)
: ReplacedBox(document, element, move(style))
{
browsing_context().register_viewport_client(*this);
document.register_viewport_client(*this);
}
void VideoBox::finalize()
{
Base::finalize();
// NOTE: We unregister from the browsing context in finalize() to avoid trouble
// in the scenario where our BrowsingContext has already been swept by GC.
browsing_context().unregister_viewport_client(*this);
// NOTE: We unregister from the document in finalize() to avoid trouble
// in the scenario where our Document has already been swept by GC.
document().unregister_viewport_client(*this);
}
HTML::HTMLVideoElement& VideoBox::dom_node()
@ -49,7 +49,7 @@ void VideoBox::prepare_for_replaced_layout()
set_natural_aspect_ratio({});
}
void VideoBox::browsing_context_did_set_viewport_rect(CSSPixelRect const&)
void VideoBox::did_set_viewport_rect(CSSPixelRect const&)
{
// FIXME: Several steps in HTMLMediaElement indicate we may optionally handle whether the media object
// is in view. Implement those steps.