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LibWeb: Add HTML::TraversableNavigable
This is the "traversable navigable" concept from the HTML spec. Co-authored-by: Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
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@ -349,6 +349,7 @@ set(SOURCES
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HTML/Timer.cpp
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HTML/Timer.cpp
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HTML/TimeRanges.cpp
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HTML/TimeRanges.cpp
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HTML/TrackEvent.cpp
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HTML/TrackEvent.cpp
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HTML/TraversableNavigable.cpp
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HTML/VideoTrack.cpp
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HTML/VideoTrack.cpp
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HTML/VideoTrackList.cpp
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HTML/VideoTrackList.cpp
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HTML/Window.cpp
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HTML/Window.cpp
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@ -385,6 +385,7 @@ class TextMetrics;
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class Timer;
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class Timer;
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class TimeRanges;
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class TimeRanges;
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class TrackEvent;
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class TrackEvent;
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class TraversableNavigable;
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class VideoTrack;
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class VideoTrack;
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class VideoTrackList;
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class VideoTrackList;
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class Window;
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class Window;
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30
Userland/Libraries/LibWeb/HTML/TraversableNavigable.cpp
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Userland/Libraries/LibWeb/HTML/TraversableNavigable.cpp
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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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#include <LibWeb/HTML/SessionHistoryEntry.h>
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#include <LibWeb/HTML/TraversableNavigable.h>
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namespace Web::HTML {
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TraversableNavigable::TraversableNavigable() = default;
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TraversableNavigable::~TraversableNavigable() = default;
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void TraversableNavigable::visit_edges(Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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for (auto& entry : m_session_history_entries)
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visitor.visit(entry);
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}
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// https://html.spec.whatwg.org/multipage/document-sequences.html#top-level-traversable
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bool TraversableNavigable::is_top_level_traversable() const
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{
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// A top-level traversable is a traversable navigable with a null parent.
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return parent() == nullptr;
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}
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}
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49
Userland/Libraries/LibWeb/HTML/TraversableNavigable.h
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Userland/Libraries/LibWeb/HTML/TraversableNavigable.h
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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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#include <AK/Vector.h>
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#include <LibWeb/HTML/Navigable.h>
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#include <LibWeb/HTML/VisibilityState.h>
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namespace Web::HTML {
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// https://html.spec.whatwg.org/multipage/document-sequences.html#traversable-navigable
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class TraversableNavigable final : public Navigable {
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JS_CELL(TraversableNavigable, Navigable);
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public:
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virtual ~TraversableNavigable() override;
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bool is_top_level_traversable() const;
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int current_session_history_step() const { return m_current_session_history_step; };
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Vector<JS::NonnullGCPtr<SessionHistoryEntry>> const& session_history_entries() const { return m_session_history_entries; };
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bool running_nested_apply_history_step() const { return m_running_nested_apply_history_step; };
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VisibilityState system_visibility_state() const { return m_system_visibility_state; };
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private:
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TraversableNavigable();
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virtual void visit_edges(Cell::Visitor&) override;
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// https://html.spec.whatwg.org/multipage/document-sequences.html#tn-current-session-history-step
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int m_current_session_history_step { 0 };
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// https://html.spec.whatwg.org/multipage/document-sequences.html#tn-session-history-entries
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Vector<JS::NonnullGCPtr<SessionHistoryEntry>> m_session_history_entries;
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// FIXME: https://html.spec.whatwg.org/multipage/document-sequences.html#tn-session-history-traversal-queue
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// https://html.spec.whatwg.org/multipage/document-sequences.html#tn-running-nested-apply-history-step
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bool m_running_nested_apply_history_step { false };
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// https://html.spec.whatwg.org/multipage/document-sequences.html#system-visibility-state
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VisibilityState m_system_visibility_state { VisibilityState::Visible };
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};
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}
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