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83c5ff57d8
(And BrowsingContextGroup had to come along for the ride as well.) This solves a number of nasty reference cycles between browsing contexts, history items, and their documents.
68 lines
2.1 KiB
C++
68 lines
2.1 KiB
C++
/*
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* Copyright (c) 2022, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibWeb/Bindings/MainThreadVM.h>
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#include <LibWeb/HTML/BrowsingContext.h>
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#include <LibWeb/HTML/BrowsingContextGroup.h>
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namespace Web::HTML {
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// https://html.spec.whatwg.org/multipage/browsers.html#browsing-context-group-set
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static HashTable<BrowsingContextGroup*>& user_agent_browsing_context_group_set()
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{
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static HashTable<BrowsingContextGroup*> set;
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return set;
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}
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BrowsingContextGroup::BrowsingContextGroup(Web::Page& page)
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: m_page(page)
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{
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user_agent_browsing_context_group_set().set(this);
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}
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BrowsingContextGroup::~BrowsingContextGroup()
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{
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user_agent_browsing_context_group_set().remove(this);
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}
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void BrowsingContextGroup::visit_edges(Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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for (auto& context : m_browsing_context_set)
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visitor.visit(context);
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}
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// https://html.spec.whatwg.org/multipage/browsers.html#creating-a-new-browsing-context-group
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JS::NonnullGCPtr<BrowsingContextGroup> BrowsingContextGroup::create_a_new_browsing_context_group(Web::Page& page)
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{
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// 1. Let group be a new browsing context group.
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// 2. Append group to the user agent's browsing context group set.
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auto group = Bindings::main_thread_vm().heap().allocate_without_realm<BrowsingContextGroup>(page);
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// 3. Let browsingContext be the result of creating a new browsing context with null, null, and group.
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auto browsing_context = BrowsingContext::create_a_new_browsing_context(page, nullptr, nullptr, *group);
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// 4. Append browsingContext to group.
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group->append(move(browsing_context));
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// 5. Return group.
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return *group;
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}
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// https://html.spec.whatwg.org/multipage/browsers.html#bcg-append
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void BrowsingContextGroup::append(BrowsingContext& browsing_context)
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{
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VERIFY(browsing_context.is_top_level());
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// 1. Append browsingContext to group's browsing context set.
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m_browsing_context_set.set(&browsing_context);
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// 2. Set browsingContext's group to group.
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browsing_context.set_group(this);
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}
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}
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