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LibWeb: Implement Document/BrowsingContext hookup according to spec

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We now implement the browsing context's "set active document" algorithm
from the spec, as well as the "discard" algorithm for browsing contexts
and documents.
This commit is contained in:
Andreas Kling
2022-09-20 21:44:42 +02:00
parent ab8432783e
commit 92deba7197
9 changed files with 189 additions and 70 deletions
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16
Userland/Libraries/LibWeb/HTML/HTMLIFrameElement.cpp
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@@ -95,7 +95,13 @@ void HTMLIFrameElement::process_the_iframe_attributes(bool initial_insertion)
void HTMLIFrameElement::removed_from(DOM::Node* node)
{
HTMLElement::removed_from(node);
discard_nested_browsing_context();
// When an iframe element is removed from a document, the user agent must discard the element's nested browsing context,
// if it is not null, and then set the element's nested browsing context to null.
if (m_nested_browsing_context) {
m_nested_browsing_context->discard();
m_nested_browsing_context = nullptr;
}
}
void HTMLIFrameElement::load_src(String const& value)
@@ -123,8 +129,12 @@ void HTMLIFrameElement::load_src(String const& value)
// https://html.spec.whatwg.org/multipage/iframe-embed-object.html#iframe-load-event-steps
void run_iframe_load_event_steps(HTML::HTMLIFrameElement& element)
{
// 1. Assert: element's nested browsing context is not null.
VERIFY(element.nested_browsing_context());
// FIXME: 1. Assert: element's nested browsing context is not null.
if (!element.nested_browsing_context()) {
// FIXME: For some reason, we sometimes end up here in the middle of SunSpider.
dbgln("FIXME: run_iframe_load_event_steps called with null nested browsing context");
return;
}
// 2. Let childDocument be the active document of element's nested browsing context.
[[maybe_unused]] auto* child_document = element.nested_browsing_context()->active_document();