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https://github.com/RGBCube/serenity
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LibWeb+WebContent+Browser: Plumb visibility state from GUI to web pages
OOPWV now reacts to show/hide events and informs LibWeb about the state change. This makes visibilitychange events fire when switching tabs. :^)
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parent
5908873b45
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d4acdac317
14 changed files with 150 additions and 11 deletions
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@ -1113,7 +1113,7 @@ DOM::ExceptionOr<void> BrowsingContext::traverse_the_history(size_t entry_index,
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new_document->set_page_showing(true);
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// 3. Update the visibility state of newDocument to "hidden".
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new_document->update_the_visibility_state("hidden");
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new_document->update_the_visibility_state(VisibilityState::Hidden);
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// 4. Fire a page transition event named pageshow at newDocument's relevant global object with true.
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auto& window = verify_cast<HTML::Window>(relevant_global_object(*new_document));
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@ -1248,18 +1248,55 @@ BrowsingContext const* BrowsingContext::the_one_permitted_sandboxed_navigator()
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}
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// https://html.spec.whatwg.org/multipage/browsers.html#document-family
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bool BrowsingContext::document_family_contains(DOM::Document const& document) const
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Vector<JS::Handle<DOM::Document>> BrowsingContext::document_family() const
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{
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HashTable<DOM::Document const*> family;
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HashTable<DOM::Document*> documents;
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for (auto& entry : m_session_history) {
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if (!entry.document)
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continue;
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if (family.set(entry.document) == AK::HashSetResult::ReplacedExistingEntry)
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if (documents.set(entry.document.ptr()) == AK::HashSetResult::ReplacedExistingEntry)
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continue;
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// FIXME: The document family of a Document object consists of the union of all the document families of the browsing contexts in the list of the descendant browsing contexts of the Document object.
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for (auto& context : entry.document->list_of_descendant_browsing_contexts()) {
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for (auto& document : context->document_family()) {
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documents.set(document.ptr());
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}
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}
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}
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return family.contains(&document);
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Vector<JS::Handle<DOM::Document>> family;
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for (auto* document : documents) {
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family.append(*document);
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}
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return family;
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}
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// https://html.spec.whatwg.org/multipage/browsers.html#document-family
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bool BrowsingContext::document_family_contains(DOM::Document const& document) const
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{
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return document_family().first_matching([&](auto& entry) { return entry.ptr() == &document; }).has_value();
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}
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VisibilityState BrowsingContext::system_visibility_state() const
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{
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return m_system_visibility_state;
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}
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// https://html.spec.whatwg.org/multipage/interaction.html#system-visibility-state
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void BrowsingContext::set_system_visibility_state(VisibilityState visibility_state)
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{
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if (m_system_visibility_state == visibility_state)
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return;
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m_system_visibility_state = visibility_state;
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// When a user-agent determines that the system visibility state for top-level browsing context context
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// has changed to newState, it must queue a task on the user interaction task source to update
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// the visibility state of all the Document objects in the top-level browsing context's document family with newState.
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auto document_family = top_level_browsing_context().document_family();
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queue_global_task(Task::Source::UserInteraction, Bindings::main_thread_vm().current_realm()->global_object(), [visibility_state, document_family = move(document_family)]() mutable {
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for (auto& document : document_family) {
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document->update_the_visibility_state(visibility_state);
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}
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});
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}
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}
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@ -18,6 +18,7 @@
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#include <LibWeb/HTML/HistoryHandlingBehavior.h>
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#include <LibWeb/HTML/Origin.h>
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#include <LibWeb/HTML/SessionHistoryEntry.h>
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#include <LibWeb/HTML/VisibilityState.h>
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#include <LibWeb/Loader/FrameLoader.h>
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#include <LibWeb/Page/EventHandler.h>
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#include <LibWeb/Platform/Timer.h>
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@ -158,8 +159,12 @@ public:
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// https://html.spec.whatwg.org/multipage/browsing-the-web.html#traverse-the-history
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DOM::ExceptionOr<void> traverse_the_history(size_t entry_index, HistoryHandlingBehavior = HistoryHandlingBehavior::Default, bool explicit_history_navigation = false);
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Vector<JS::Handle<DOM::Document>> document_family() const;
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bool document_family_contains(DOM::Document const&) const;
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VisibilityState system_visibility_state() const;
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void set_system_visibility_state(VisibilityState);
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private:
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explicit BrowsingContext(Page&, HTML::BrowsingContextContainer*);
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@ -205,6 +210,9 @@ private:
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// https://html.spec.whatwg.org/multipage/browsers.html#tlbc-group
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RefPtr<BrowsingContextGroup> m_group;
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// https://html.spec.whatwg.org/multipage/interaction.html#system-visibility-state
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VisibilityState m_system_visibility_state { VisibilityState::Hidden };
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};
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HTML::Origin determine_the_origin(BrowsingContext const& browsing_context, Optional<AK::URL> url, SandboxingFlagSet sandbox_flags, Optional<HTML::Origin> invocation_origin);
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@ -18,6 +18,12 @@
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namespace Web::HTML {
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HashTable<BrowsingContextContainer*>& BrowsingContextContainer::all_instances()
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{
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static HashTable<BrowsingContextContainer*> set;
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return set;
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}
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BrowsingContextContainer::BrowsingContextContainer(DOM::Document& document, DOM::QualifiedName qualified_name)
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: HTMLElement(document, move(qualified_name))
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{
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@ -16,6 +16,8 @@ class BrowsingContextContainer : public HTMLElement {
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public:
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virtual ~BrowsingContextContainer() override;
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static HashTable<BrowsingContextContainer*>& all_instances();
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BrowsingContext* nested_browsing_context() { return m_nested_browsing_context; }
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BrowsingContext const* nested_browsing_context() const { return m_nested_browsing_context; }
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16
Userland/Libraries/LibWeb/HTML/VisibilityState.h
Normal file
16
Userland/Libraries/LibWeb/HTML/VisibilityState.h
Normal file
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@ -0,0 +1,16 @@
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/*
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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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#pragma once
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namespace Web::HTML {
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enum VisibilityState {
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Hidden,
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Visible,
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};
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}
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