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LibWeb: Implement "browsing context group" concept from the HTML spec

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This commit is contained in:
Andreas Kling 2022-09-19 12:28:46 +02:00
parent e36750d591
commit 8ead228202
9 changed files with 163 additions and 11 deletions
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42
Userland/Libraries/LibWeb/HTML/BrowsingContext.cpp
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@ -9,6 +9,7 @@
#include <LibWeb/DOM/HTMLCollection.h>
#include <LibWeb/HTML/BrowsingContext.h>
#include <LibWeb/HTML/BrowsingContextContainer.h>
#include <LibWeb/HTML/BrowsingContextGroup.h>
#include <LibWeb/HTML/CrossOrigin/CrossOriginOpenerPolicy.h>
#include <LibWeb/HTML/EventLoop/EventLoop.h>
#include <LibWeb/HTML/HTMLAnchorElement.h>
@ -86,8 +87,18 @@ HTML::Origin determine_the_origin(BrowsingContext const& browsing_context, Optio
return url_origin(*url);
}
// https://html.spec.whatwg.org/multipage/browsers.html#creating-a-new-top-level-browsing-context
NonnullRefPtr<BrowsingContext> BrowsingContext::create_a_new_top_level_browsing_context(Web::Page& page)
{
// 1. Let group be the result of creating a new browsing context group.
auto group = BrowsingContextGroup::create_a_new_browsing_context_group(page);
// 2. Return group's browsing context set[0].
return *group->browsing_context_set().begin();
}
// https://html.spec.whatwg.org/multipage/browsers.html#creating-a-new-browsing-context
NonnullRefPtr<BrowsingContext> BrowsingContext::create_a_new_browsing_context(Page& page, JS::GCPtr<DOM::Document> creator, JS::GCPtr<DOM::Element> embedder)
NonnullRefPtr<BrowsingContext> BrowsingContext::create_a_new_browsing_context(Page& page, JS::GCPtr<DOM::Document> creator, JS::GCPtr<DOM::Element> embedder, BrowsingContextGroup&)
{
// 1. Let browsingContext be a new browsing context.
BrowsingContextContainer* container = (embedder && is<BrowsingContextContainer>(*embedder)) ? static_cast<BrowsingContextContainer*>(embedder.ptr()) : nullptr;
@ -805,4 +816,33 @@ void BrowsingContext::scroll_offset_did_change()
doc->pending_scroll_event_targets().append(*doc);
}
BrowsingContextGroup* BrowsingContext::group()
{
return m_group;
}
void BrowsingContext::set_group(BrowsingContextGroup* group)
{
m_group = group;
}
// https://html.spec.whatwg.org/multipage/browsers.html#bcg-remove
void BrowsingContext::remove()
{
// 1. Assert: browsingContext's group is non-null, because a browsing context only gets discarded once.
VERIFY(group());
// 2. Let group be browsingContext's group.
NonnullRefPtr<BrowsingContextGroup> group = *this->group();
// 3. Set browsingContext's group to null.
set_group(nullptr);
// 4. Remove browsingContext from group's browsing context set.
group->browsing_context_set().remove(*this);
// 5. If group's browsing context set is empty, then remove group from the user agent's browsing context group set.
// NOTE: This is done by ~BrowsingContextGroup() when the refcount reaches 0.
}
}