cpp-ladybirdbrowser-ladybird-very-interesting-big-change

This mapping has 3 multi-map groups: several pairings are equally correct there. The code view shows one arbitrary valid pairing, not the only one.

A painting is a person's account of this edit as text, recorded independently of the node mapping - a rendering often has several equally defensible answers where the mapping has one. Deletions and insertions carry no position on the opposite side in a painting, so that panel draws no caret for them.

Before…lines 1–519 unchanged (519 lines)
520
521        auto navigable = this->navigable();
522        if (!navigable || !navigable->is_focused())
523            return;
524
525        auto node = cursor_position->node();
526        if (node->paintable()) {
527            m_cursor_blink_state = !m_cursor_blink_state;
528            node->paintable()->set_needs_display();
529        }
530    });
531
532    HTML::main_thread_event_loop().register_document({}, *this);
533}
534
…lines 535–1159 unchanged (625 lines)
1160    m_needs_full_layout_tree_update = true;
1161}
1162
1163Color Document::background_color() const
1164{
1165    // CSS2 says we should use the HTML element's background color unless it's transparent...
1166    if (auto* html_element = this->html_element(); html_element && html_element->layout_node()) {
1167        auto color = html_element->layout_node()->computed_values().background_color();
1168        if (color.alpha())
1169            return color;
1170    }
1171
1172    // ...in which case we use the BODY element's background color.
1173    if (auto* body_element = body(); body_element && body_element->layout_node()) {
1174        auto color = body_element->layout_node()->computed_values().background_color();
1175        return color;
1176    }
1177
1178    // By default, the document is transparent.
1179    // The outermost canvas is colored by the PageHost.
1180    return Color::Transparent;
1181}
1182
1183Vector<CSS::BackgroundLayerData> const* Document::background_layers() const
1184{
1185    auto* body_element = body();
1186    if (!body_element)
1187        return {};
1188
1189    auto body_layout_node = body_element->layout_node();
1190    if (!body_layout_node)
1191        return {};
1192
1193    return &body_layout_node->background_layers();
1194}
1195
1196CSS::ImageRendering Document::background_image_rendering() const
1197{
1198    auto* body_element = body();
1199    if (!body_element)
1200        return CSS::ImageRendering::Auto;
1201
1202    auto body_layout_node = body_element->layout_node();
1203    if (!body_layout_node)
1204        return CSS::ImageRendering::Auto;
1205
1206    return body_layout_node->computed_values().image_rendering();
1207}
1208
…lines 1209–1392 unchanged (184 lines)
1393
1394static void propagate_scrollbar_width_to_viewport(Element& root_element, Layout::Viewport& viewport)
1395{
1396    // https://drafts.csswg.org/css-scrollbars/#scrollbar-width
1397    // UAs must apply the scrollbar-color value set on the root element to the viewport.
1398    auto& viewport_computed_values = viewport.mutable_computed_values();
1399    auto& root_element_computed_values = root_element.layout_node()->computed_values();
1400    viewport_computed_values.set_scrollbar_width(root_element_computed_values.scrollbar_width());
1401}
1402
1403// https://drafts.csswg.org/css-overflow-3/#overflow-propagation
1404static void propagate_overflow_to_viewport(Element& root_element, Layout::Viewport& viewport)
1405{
…lines 1406–1413 unchanged (8 lines)
1414    auto* body_element = root_element.first_child_of_type<HTML::HTMLBodyElement>();
1415    if (body_element && !body_element->computed_properties()->contain().is_empty())
1416        return;
1417
1418    // UAs must apply the overflow-* values set on the root element to the viewport
1419    // when the root element’s display value is not none.
1420    auto overflow_origin_node = root_element.layout_node();
1421    auto& viewport_computed_values = viewport.mutable_computed_values();
1422
1423    // However, when the root element is an [HTML] html element (including XML syntax for HTML)
1424    // whose overflow value is visible (in both axes), and that element has as a child
1425    // a body element whose display value is also not none,
1426    // user agents must instead apply the overflow-* values of the first such child element to the viewport.
1427    if (root_element.is_html_html_element()) {
1428        auto root_element_layout_node = root_element.layout_node();
1429        auto& root_element_computed_values = root_element_layout_node->mutable_computed_values();
1430        if (root_element_computed_values.overflow_x() == CSS::Overflow::Visible && root_element_computed_values.overflow_y() == CSS::Overflow::Visible) {
1431            auto* body_element = root_element.first_child_of_type<HTML::HTMLBodyElement>();
1432            if (body_element && body_element->layout_node())
1433                overflow_origin_node = body_element->layout_node();
1434        }
1435    }
1436
1437    // If 'visible' is applied to the viewport, it must be interpreted as 'auto'. If 'clip' is applied to the viewport, it must be interpreted as 'hidden'.
1438    auto& overflow_origin_computed_values = overflow_origin_node->mutable_computed_values();
1439    auto overflow_x_to_apply = overflow_origin_computed_values.overflow_x();
…lines 1440–1458 unchanged (19 lines)
1459
1460void Document::update_layout(UpdateLayoutReason reason)
1461{
1462    auto navigable = this->navigable();
1463    if (!navigable || navigable->active_document() != this)
1464        return;
1465
1466    update_style();
1467
1468    auto svg_roots_to_relayout = move(m_svg_roots_needing_relayout);
1469
1470    if (m_layout_root && !m_layout_root->needs_layout_update() && svg_roots_to_relayout.is_empty())
1471        return;
1472
1473    // NOTE: If this is a document hosting <template> contents, layout is unnecessary.
1474    if (m_created_for_appropriate_template_contents)
1475        return;
1476
1477    auto const needs_layout_tree_rebuild = !m_layout_root || needs_layout_tree_update() || child_needs_layout_tree_update() || needs_full_layout_tree_update();
…lines 1478–1500 unchanged (23 lines)
1501
1502    auto timer = Core::ElapsedTimer::start_new(Core::TimerType::Precise);
1503
1504    if (needs_layout_tree_rebuild) {
1505        Layout::TreeBuilder tree_builder;
1506        m_layout_root = as<Layout::Viewport>(*tree_builder.build(*this));
1507
1508        if (document_element && document_element->layout_node()) {
1509            propagate_overflow_to_viewport(*document_element, *m_layout_root);
1510            propagate_scrollbar_width_to_viewport(*document_element, *m_layout_root);
1511        }
1512
1513        set_needs_full_layout_tree_update(false);
1514
1515        if constexpr (UPDATE_LAYOUT_DEBUG) {
1516            dbgln("TREEBUILD {} µs", timer.elapsed_time().to_microseconds());
1517        }
…lines 1518–1555 unchanged (38 lines)
1556        Layout::BlockFormattingContext root_formatting_context(layout_state, Layout::LayoutMode::Normal, *m_layout_root, nullptr);
1557
1558        auto& viewport = static_cast<Layout::Viewport&>(*m_layout_root);
1559        auto& viewport_state = layout_state.get_mutable(viewport);
1560        viewport_state.set_content_width(viewport_rect.width());
1561        viewport_state.set_content_height(viewport_rect.height());
1562
1563        if (document_element && document_element->layout_node()) {
1564            auto& icb_state = layout_state.get_mutable(as<Layout::NodeWithStyleAndBoxModelMetrics>(*document_element->layout_node()));
1565            icb_state.set_content_width(viewport_rect.width());
1566        }
1567
1568        root_formatting_context.run(
1569            Layout::AvailableSpace(
1570                Layout::AvailableSize::make_definite(viewport_rect.width()),
…lines 1571–1574 unchanged (4 lines)
1575
1576    // Broadcast the current viewport rect to any new paintables, so they know whether they're visible or not.
1577    inform_all_viewport_clients_about_the_current_viewport_rect();
1578
1579    m_document->set_needs_display();
1580    set_needs_to_resolve_paint_only_properties();
1581
1582    paintable()->assign_scroll_frames();
1583
1584    set_needs_accumulated_visual_contexts_update(true);
1585    update_paint_and_hit_testing_properties_if_needed();
1586
1587    if (auto range = get_selection()->range()) {
1588        paintable()->recompute_selection_states(*range);
1589    }
1590
1591    // Collect elements with content-visibility: auto. This is used in the HTML event loop to avoid traversing the whole tree every time.
1592    Vector<GC::Ref<Painting::PaintableBox>> paintable_boxes_with_auto_content_visibility;
1593    paintable()->for_each_in_subtree_of_type<Painting::PaintableBox>([&](auto& paintable_box) {
1594        if (paintable_box.dom_node()
1595            && paintable_box.dom_node()->is_element()
1596            && paintable_box.computed_values().content_visibility() == CSS::ContentVisibility::Auto) {
1597            paintable_boxes_with_auto_content_visibility.append(paintable_box);
1598        }
1599        return TraversalDecision::Continue;
1600    });
1601    paintable()->set_paintable_boxes_with_auto_content_visibility(move(paintable_boxes_with_auto_content_visibility));
1602
1603    m_layout_root->for_each_in_inclusive_subtree([](auto& node) {
1604        node.reset_needs_layout_update();
1605        return TraversalDecision::Continue;
1606    });
1607
1608    if constexpr (UPDATE_LAYOUT_DEBUG) {
1609        dbgln("LAYOUT {} {} µs", to_string(reason), timer.elapsed_time().to_microseconds());
1610    }
1611}
1612
1613[[nodiscard]] static CSS::RequiredInvalidationAfterStyleChange update_style_recursively(Node& node, CSS::StyleComputer& style_computer, bool needs_inherited_style_update, bool recompute_elements_depending_on_custom_properties, bool parent_display_changed)
1614{
1615    bool const needs_full_style_update = node.document().needs_full_style_update();
1616    CSS::RequiredInvalidationAfterStyleChange invalidation;
1617
1618    if (node.is_element())
…lines 1619–1645 unchanged (27 lines)
1646                        assigned_node->set_needs_style_update(true);
1647                    });
1648                }
1649            }
1650        }
1651    }
1652    if (node_invalidation.relayout && node.layout_node()) {
1653        node.layout_node()->set_needs_layout_update(SetNeedsLayoutReason::StyleChange);
1654    }
1655    if (node_invalidation.rebuild_layout_tree) {
1656        // We mark layout tree for rebuild starting from parent element to correctly invalidate
1657        // "display" property change to/from "contents" value.
1658        if (auto parent_element = node.parent_element()) {
1659            parent_element->set_needs_layout_tree_update(true, SetNeedsLayoutTreeUpdateReason::StyleChange);
1660        } else {
…lines 1661–1815 unchanged (155 lines)
1816
1817    m_needs_animated_style_update = false;
1818}
1819
1820void Document::update_paint_and_hit_testing_properties_if_needed()
1821{
1822    if (auto* paintable = this->paintable()) {
1823        paintable->refresh_scroll_state();
1824    }
1825
1826    if (m_needs_to_resolve_paint_only_properties) {
1827        m_needs_to_resolve_paint_only_properties = false;
1828        if (auto* paintable = this->paintable()) {
1829            paintable->resolve_paint_only_properties();
1830        }
1831    }
1832
1833    if (m_needs_accumulated_visual_contexts_update) {
1834        m_needs_accumulated_visual_contexts_update = false;
1835        if (auto* paintable = this->paintable()) {
1836            paintable->assign_accumulated_visual_contexts();
1837        }
1838    }
1839}
1840
1841void Document::set_normal_link_color(Color color)
1842{
1843    m_normal_link_color = color;
…lines 1844–1917 unchanged (74 lines)
1918            // 3. Let color be the result of parsing value.
1919            auto css_value = parse_css_value(context, value, CSS::PropertyID::Color);
1920
1921            // 4. If color is not failure, then return color.
1922            if (!css_value.is_null() && css_value->has_color()) {
1923                CSS::ColorResolutionContext color_resolution_context {};
1924                if (html_element() && html_element()->layout_node()) {
1925                    color_resolution_context = CSS::ColorResolutionContext::for_layout_node_with_style(*html_element()->layout_node());
1926                }
1927
1928                theme_color = css_value->to_color(color_resolution_context).value();
1929                return TraversalDecision::Break;
1930            }
1931        }
…lines 1932–1942 unchanged (11 lines)
1943}
1944
1945Layout::Viewport* Document::layout_node()
1946{
1947    return static_cast<Layout::Viewport*>(Node::layout_node());
1948}
1949
1950void Document::set_inspected_node(GC::Ptr<Node> node)
1951{
1952    m_inspected_node = node;
1953}
1954
1955void Document::set_highlighted_node(GC::Ptr<Node> node, Optional<CSS::PseudoElement> pseudo_element)
…lines 1956–1967 unchanged (12 lines)
1968}
1969
1970GC::Ptr<Layout::Node> Document::highlighted_layout_node()
1971{
1972    if (!m_highlighted_node)
1973        return nullptr;
1974
1975    if (!m_highlighted_pseudo_element.has_value() || !m_highlighted_node->is_element())
1976        return m_highlighted_node->layout_node();
1977
1978    auto const& element = static_cast<Element const&>(*m_highlighted_node);
1979    return element.get_pseudo_element_node(m_highlighted_pseudo_element.value());
1980}
1981
1982static Node* find_common_ancestor(Node* a, Node* b)
…lines 1983–2747 unchanged (765 lines)
2748    auto* new_focused_element = as_if<Element>(node.ptr());
2749    if (new_focused_element)
2750        new_focused_element->did_receive_focus();
2751
2752    reset_cursor_blink_cycle();
2753
2754    if (paintable())
2755        paintable()->set_needs_display();
2756
2757    // Scroll the viewport if necessary to make the newly focused element visible.
2758    if (new_focused_element) {
2759        new_focused_element->queue_an_element_task(HTML::Task::Source::UserInteraction, [new_focused_element] {
2760            if (new_focused_element->document().focused_area().ptr() != new_focused_element)
2761                return;
…lines 2762–2797 unchanged (36 lines)
2798    } else {
2799        invalidate_style_for_elements_affected_by_pseudo_class_change(CSS::PseudoClass::Active, m_active_element, *common_ancestor, element);
2800    }
2801
2802    m_active_element = element;
2803
2804    if (paintable())
2805        paintable()->set_needs_display();
2806}
2807
2808void Document::set_target_element(GC::Ptr<Element> element)
2809{
2810    if (m_target_element.ptr() == element)
2811        return;
…lines 2812–2829 unchanged (18 lines)
2830    } else {
2831        invalidate_style_for_elements_affected_by_pseudo_class_change(CSS::PseudoClass::Target, m_target_element, *common_ancestor, element);
2832    }
2833
2834    m_target_element = element;
2835
2836    if (paintable())
2837        paintable()->set_needs_display();
2838}
2839
2840// https://html.spec.whatwg.org/multipage/browsing-the-web.html#the-indicated-part-of-the-document
2841Document::IndicatedPart Document::determine_the_indicated_part() const
2842{
2843    // For an HTML document document, the following processing model must be followed to determine its indicated part:
…lines 2844–4013 unchanged (1170 lines)
4014    },
4015        m_page_showing);
4016}
4017
4018void Document::invalidate_stacking_context_tree()
4019{
4020    if (auto* paintable_box = this->paintable_box())
4021        paintable_box->invalidate_stacking_context();
4022}
4023
4024void Document::check_favicon_after_loading_link_resource()
4025{
4026    // https://html.spec.whatwg.org/multipage/links.html#rel-icon
…lines 4027–5541 unchanged (1515 lines)
5542}
5543
5544Painting::ViewportPaintable* Document::paintable()
5545{
5546    return static_cast<Painting::ViewportPaintable*>(Node::paintable());
5547}
5548
5549// https://html.spec.whatwg.org/multipage/browsing-the-web.html#restore-the-history-object-state
5550void Document::restore_the_history_object_state(GC::Ref<HTML::SessionHistoryEntry> entry)
5551{
5552    // 1. Let targetRealm be document's relevant realm.
5553    auto& target_realm = HTML::relevant_realm(*this);
5554
…lines 5555–6622 unchanged (1068 lines)
6623// https://drafts.csswg.org/css-position-4/#process-top-layer-removals
6624void Document::process_top_layer_removals()
6625{
6626    // 1. For each element el in doc’s pending top layer removals: if el’s computed value of overlay is none, or el is
6627    //    not rendered, remove el from doc’s top layer and pending top layer removals.
6628    GC::RootVector<GC::Ref<Element>> elements_to_remove(heap());
6629    for (auto& element : m_top_layer_pending_removals) {
6630        // FIXME: Implement overlay property
6631        if (!element->paintable()) {
6632            elements_to_remove.append(element);
6633        }
6634    }
6635
6636    for (auto& element : elements_to_remove) {
6637        m_top_layer_elements.remove(element);
6638        m_top_layer_pending_removals.remove(element);
6639    }
…lines 6640–6657 unchanged (18 lines)
6658    // 3. Return null.
6659    return {};
6660}
6661
6662void Document::set_needs_to_refresh_scroll_state(bool b)
6663{
6664    if (auto* paintable = this->paintable())
6665        paintable->set_needs_to_refresh_scroll_state(b);
6666}
6667
6668Vector<GC::Root<Range>> Document::find_matching_text(String const& query, CaseSensitivity case_sensitivity)
6669{
6670    // Ensure the layout tree exists before searching for text matches.
…lines 6671–7945 unchanged (1275 lines)

After…lines 1–519 unchanged (519 lines)
520
521        auto navigable = this->navigable();
522        if (!navigable || !navigable->is_focused())
523            return;
524
525        auto node = cursor_position->node();
526        if (node->unsafe_paintable()) {
527            m_cursor_blink_state = !m_cursor_blink_state;
528            node->set_needs_display();
529        }
530    });
531
532    HTML::main_thread_event_loop().register_document({}, *this);
533}
534
…lines 535–1159 unchanged (625 lines)
1160    m_needs_full_layout_tree_update = true;
1161}
1162
1163Color Document::background_color() const
1164{
1165    // CSS2 says we should use the HTML element's background color unless it's transparent...
1166    // NB: Called during resolve_paint_properties() inside update_layout().
1167    if (auto* html_element = this->html_element(); html_element && html_element->unsafe_layout_node()) {
1168        auto color = html_element->unsafe_layout_node()->computed_values().background_color();
1169        if (color.alpha())
1170            return color;
1171    }
1172
1173    // ...in which case we use the BODY element's background color.
1174    if (auto* body_element = body(); body_element && body_element->unsafe_layout_node()) {
1175        auto color = body_element->unsafe_layout_node()->computed_values().background_color();
1176        return color;
1177    }
1178
1179    // By default, the document is transparent.
1180    // The outermost canvas is colored by the PageHost.
1181    return Color::Transparent;
1182}
1183
1184Vector<CSS::BackgroundLayerData> const* Document::background_layers() const
1185{
1186    auto* body_element = body();
1187    if (!body_element)
1188        return {};
1189
1190    // NB: Called during resolve_paint_properties() inside update_layout().
1191    auto body_layout_node = body_element->unsafe_layout_node();
1192    if (!body_layout_node)
1193        return {};
1194
1195    return &body_layout_node->background_layers();
1196}
1197
1198CSS::ImageRendering Document::background_image_rendering() const
1199{
1200    auto* body_element = body();
1201    if (!body_element)
1202        return CSS::ImageRendering::Auto;
1203
1204    // NB: Called during resolve_paint_properties() inside update_layout().
1205    auto body_layout_node = body_element->unsafe_layout_node();
1206    if (!body_layout_node)
1207        return CSS::ImageRendering::Auto;
1208
1209    return body_layout_node->computed_values().image_rendering();
1210}
1211
…lines 1212–1395 unchanged (184 lines)
1396
1397static void propagate_scrollbar_width_to_viewport(Element& root_element, Layout::Viewport& viewport)
1398{
1399    // https://drafts.csswg.org/css-scrollbars/#scrollbar-width
1400    // UAs must apply the scrollbar-color value set on the root element to the viewport.
1401    auto& viewport_computed_values = viewport.mutable_computed_values();
1402    // NB: Called during layout tree construction.
1403    auto& root_element_computed_values = root_element.unsafe_layout_node()->computed_values();
1404    viewport_computed_values.set_scrollbar_width(root_element_computed_values.scrollbar_width());
1405}
1406
1407// https://drafts.csswg.org/css-overflow-3/#overflow-propagation
1408static void propagate_overflow_to_viewport(Element& root_element, Layout::Viewport& viewport)
1409{
…lines 1410–1417 unchanged (8 lines)
1418    auto* body_element = root_element.first_child_of_type<HTML::HTMLBodyElement>();
1419    if (body_element && !body_element->computed_properties()->contain().is_empty())
1420        return;
1421
1422    // UAs must apply the overflow-* values set on the root element to the viewport
1423    // when the root element’s display value is not none.
1424    // NB: Called during layout tree construction.
1425    auto overflow_origin_node = root_element.unsafe_layout_node();
1426    auto& viewport_computed_values = viewport.mutable_computed_values();
1427
1428    // However, when the root element is an [HTML] html element (including XML syntax for HTML)
1429    // whose overflow value is visible (in both axes), and that element has as a child
1430    // a body element whose display value is also not none,
1431    // user agents must instead apply the overflow-* values of the first such child element to the viewport.
1432    if (root_element.is_html_html_element()) {
1433        auto root_element_layout_node = root_element.unsafe_layout_node();
1434        auto& root_element_computed_values = root_element_layout_node->mutable_computed_values();
1435        if (root_element_computed_values.overflow_x() == CSS::Overflow::Visible && root_element_computed_values.overflow_y() == CSS::Overflow::Visible) {
1436            auto* body_element = root_element.first_child_of_type<HTML::HTMLBodyElement>();
1437            if (body_element && body_element->unsafe_layout_node())
1438                overflow_origin_node = body_element->unsafe_layout_node();
1439        }
1440    }
1441
1442    // If 'visible' is applied to the viewport, it must be interpreted as 'auto'. If 'clip' is applied to the viewport, it must be interpreted as 'hidden'.
1443    auto& overflow_origin_computed_values = overflow_origin_node->mutable_computed_values();
1444    auto overflow_x_to_apply = overflow_origin_computed_values.overflow_x();
…lines 1445–1464 unchanged (20 lines)
1465void Document::update_layout(UpdateLayoutReason reason)
1466{
1467    auto navigable = this->navigable();
1468    if (!navigable || navigable->active_document() != this)
1469        return;
1470
1471    VERIFY(!m_is_running_update_layout);
1472    ScopeGuard guard = [&] { m_is_running_update_layout = false; };
1473    m_is_running_update_layout = true;
1474
1475    update_style();
1476
1477    if (layout_is_up_to_date())
1478        return;
1479
1480    auto svg_roots_to_relayout = move(m_svg_roots_needing_relayout);
1481
1482    // NOTE: If this is a document hosting <template> contents, layout is unnecessary.
1483    if (m_created_for_appropriate_template_contents)
1484        return;
…lines 1485–1510 unchanged (26 lines)
1511    auto timer = Core::ElapsedTimer::start_new(Core::TimerType::Precise);
1512
1513    if (needs_layout_tree_rebuild) {
1514        Layout::TreeBuilder tree_builder;
1515        m_layout_root = as<Layout::Viewport>(*tree_builder.build(*this));
1516
1517        // NB: Called during layout update.
1518        if (document_element && document_element->unsafe_layout_node()) {
1519            propagate_overflow_to_viewport(*document_element, *m_layout_root);
1520            propagate_scrollbar_width_to_viewport(*document_element, *m_layout_root);
1521        }
1522
1523        set_needs_full_layout_tree_update(false);
1524
1525        if constexpr (UPDATE_LAYOUT_DEBUG) {
1526            dbgln("TREEBUILD {} µs", timer.elapsed_time().to_microseconds());
1527        }
…lines 1528–1566 unchanged (39 lines)
1567
1568        auto& viewport = static_cast<Layout::Viewport&>(*m_layout_root);
1569        auto& viewport_state = layout_state.get_mutable(viewport);
1570        viewport_state.set_content_width(viewport_rect.width());
1571        viewport_state.set_content_height(viewport_rect.height());
1572
1573        // NB: Called during layout update.
1574        if (document_element && document_element->unsafe_layout_node()) {
1575            auto& icb_state = layout_state.get_mutable(as<Layout::NodeWithStyleAndBoxModelMetrics>(*document_element->unsafe_layout_node()));
1576            icb_state.set_content_width(viewport_rect.width());
1577        }
1578
1579        root_formatting_context.run(
1580            Layout::AvailableSpace(
1581                Layout::AvailableSize::make_definite(viewport_rect.width()),
…lines 1582–1585 unchanged (4 lines)
1586
1587    // Broadcast the current viewport rect to any new paintables, so they know whether they're visible or not.
1588    inform_all_viewport_clients_about_the_current_viewport_rect();
1589
1590    m_document->set_needs_display();
1591    set_needs_to_resolve_paint_only_properties();
1592
1593    // NB: Called during layout update.
1594    unsafe_paintable()->assign_scroll_frames();
1595
1596    set_needs_accumulated_visual_contexts_update(true);
1597    update_paint_and_hit_testing_properties_if_needed();
1598
1599    if (auto range = get_selection()->range()) {
1600        unsafe_paintable()->recompute_selection_states(*range);
1601    }
1602
1603    // Collect elements with content-visibility: auto. This is used in the HTML event loop to avoid traversing the whole tree every time.
1604    Vector<GC::Ref<Painting::PaintableBox>> paintable_boxes_with_auto_content_visibility;
1605    unsafe_paintable()->for_each_in_subtree_of_type<Painting::PaintableBox>([&](auto& paintable_box) {
1606        if (paintable_box.dom_node()
1607            && paintable_box.dom_node()->is_element()
1608            && paintable_box.computed_values().content_visibility() == CSS::ContentVisibility::Auto) {
1609            paintable_boxes_with_auto_content_visibility.append(paintable_box);
1610        }
1611        return TraversalDecision::Continue;
1612    });
1613    unsafe_paintable()->set_paintable_boxes_with_auto_content_visibility(move(paintable_boxes_with_auto_content_visibility));
1614
1615    m_layout_root->for_each_in_inclusive_subtree([](auto& node) {
1616        node.reset_needs_layout_update();
1617        return TraversalDecision::Continue;
1618    });
1619
1620    if constexpr (UPDATE_LAYOUT_DEBUG) {
1621        dbgln("LAYOUT {} {} µs", to_string(reason), timer.elapsed_time().to_microseconds());
1622    }
1623
1624    VERIFY(layout_is_up_to_date());
1625}
1626
1627bool Document::layout_is_up_to_date() const
1628{
1629    if (!navigable() || navigable()->active_document() != this)
1630        return true;
1631    if (!m_layout_root)
1632        return false;
1633    return !m_layout_root->needs_layout_update()
1634        && !needs_layout_tree_update()
1635        && !child_needs_layout_tree_update()
1636        && !needs_full_layout_tree_update()
1637        && m_svg_roots_needing_relayout.is_empty();
1638}
1639
1640[[nodiscard]] static CSS::RequiredInvalidationAfterStyleChange update_style_recursively(Node& node, CSS::StyleComputer& style_computer, bool needs_inherited_style_update, bool recompute_elements_depending_on_custom_properties, bool parent_display_changed)
1641{
1642    bool const needs_full_style_update = node.document().needs_full_style_update();
1643    CSS::RequiredInvalidationAfterStyleChange invalidation;
1644
…lines 1645–1672 unchanged (28 lines)
1673                        assigned_node->set_needs_style_update(true);
1674                    });
1675                }
1676            }
1677        }
1678    }
1679    if (node_invalidation.relayout)
1680        node.set_needs_layout_update(SetNeedsLayoutReason::StyleChange);
1681    if (node_invalidation.rebuild_layout_tree) {
1682        // We mark layout tree for rebuild starting from parent element to correctly invalidate
1683        // "display" property change to/from "contents" value.
1684        if (auto parent_element = node.parent_element()) {
1685            parent_element->set_needs_layout_tree_update(true, SetNeedsLayoutTreeUpdateReason::StyleChange);
1686        } else {
…lines 1687–1841 unchanged (155 lines)
1842
1843    m_needs_animated_style_update = false;
1844}
1845
1846void Document::update_paint_and_hit_testing_properties_if_needed()
1847{
1848    // NB: Called during paint property resolution.
1849    if (auto* paintable = this->unsafe_paintable()) {
1850        paintable->refresh_scroll_state();
1851    }
1852
1853    if (m_needs_to_resolve_paint_only_properties) {
1854        m_needs_to_resolve_paint_only_properties = false;
1855        if (auto* paintable = this->unsafe_paintable()) {
1856            paintable->resolve_paint_only_properties();
1857        }
1858    }
1859
1860    if (m_needs_accumulated_visual_contexts_update) {
1861        m_needs_accumulated_visual_contexts_update = false;
1862        if (auto* paintable = this->unsafe_paintable()) {
1863            paintable->assign_accumulated_visual_contexts();
1864        }
1865    }
1866}
1867
1868void Document::set_normal_link_color(Color color)
1869{
1870    m_normal_link_color = color;
…lines 1871–1944 unchanged (74 lines)
1945            // 3. Let color be the result of parsing value.
1946            auto css_value = parse_css_value(context, value, CSS::PropertyID::Color);
1947
1948            // 4. If color is not failure, then return color.
1949            if (!css_value.is_null() && css_value->has_color()) {
1950                CSS::ColorResolutionContext color_resolution_context {};
1951                // NB: Called during theme color computation, layout may be stale.
1952                if (html_element() && html_element()->unsafe_layout_node()) {
1953                    color_resolution_context = CSS::ColorResolutionContext::for_layout_node_with_style(*html_element()->unsafe_layout_node());
1954                }
1955
1956                theme_color = css_value->to_color(color_resolution_context).value();
1957                return TraversalDecision::Break;
1958            }
1959        }
…lines 1960–1971 unchanged (12 lines)
1972
1973Layout::Viewport* Document::layout_node()
1974{
1975    return static_cast<Layout::Viewport*>(Node::layout_node());
1976}
1977
1978Layout::Viewport const* Document::unsafe_layout_node() const
1979{
1980    return static_cast<Layout::Viewport const*>(Node::unsafe_layout_node());
1981}
1982
1983Layout::Viewport* Document::unsafe_layout_node()
1984{
1985    return static_cast<Layout::Viewport*>(Node::unsafe_layout_node());
1986}
1987
1988void Document::set_inspected_node(GC::Ptr<Node> node)
1989{
1990    m_inspected_node = node;
1991}
1992
…lines 1993–2006 unchanged (14 lines)
2007
2008GC::Ptr<Layout::Node> Document::highlighted_layout_node()
2009{
2010    if (!m_highlighted_node)
2011        return nullptr;
2012
2013    // NB: Called during resolve_paint_properties() inside update_layout().
2014    if (!m_highlighted_pseudo_element.has_value() || !m_highlighted_node->is_element())
2015        return m_highlighted_node->unsafe_layout_node();
2016
2017    auto const& element = static_cast<Element const&>(*m_highlighted_node);
2018    return element.get_pseudo_element_node(m_highlighted_pseudo_element.value());
2019}
2020
2021static Node* find_common_ancestor(Node* a, Node* b)
…lines 2022–2785 unchanged (764 lines)
2786
2787    auto* new_focused_element = as_if<Element>(node.ptr());
2788    if (new_focused_element)
2789        new_focused_element->did_receive_focus();
2790
2791    reset_cursor_blink_cycle();
2792
2793    set_needs_display();
2794
2795    // Scroll the viewport if necessary to make the newly focused element visible.
2796    if (new_focused_element) {
2797        new_focused_element->queue_an_element_task(HTML::Task::Source::UserInteraction, [new_focused_element] {
2798            if (new_focused_element->document().focused_area().ptr() != new_focused_element)
2799                return;
…lines 2800–2834 unchanged (35 lines)
2835        }
2836    } else {
2837        invalidate_style_for_elements_affected_by_pseudo_class_change(CSS::PseudoClass::Active, m_active_element, *common_ancestor, element);
2838    }
2839
2840    m_active_element = element;
2841
2842    set_needs_display();
2843}
2844
2845void Document::set_target_element(GC::Ptr<Element> element)
2846{
2847    if (m_target_element.ptr() == element)
2848        return;
…lines 2849–2865 unchanged (17 lines)
2866        }
2867    } else {
2868        invalidate_style_for_elements_affected_by_pseudo_class_change(CSS::PseudoClass::Target, m_target_element, *common_ancestor, element);
2869    }
2870
2871    m_target_element = element;
2872
2873    set_needs_display();
2874}
2875
2876// https://html.spec.whatwg.org/multipage/browsing-the-web.html#the-indicated-part-of-the-document
2877Document::IndicatedPart Document::determine_the_indicated_part() const
2878{
2879    // For an HTML document document, the following processing model must be followed to determine its indicated part:
…lines 2880–4049 unchanged (1170 lines)
4050    },
4051        m_page_showing);
4052}
4053
4054void Document::invalidate_stacking_context_tree()
4055{
4056    // NB: Called during stacking context invalidation.
4057    if (auto* paintable_box = this->unsafe_paintable_box())
4058        paintable_box->invalidate_stacking_context();
4059}
4060
4061void Document::check_favicon_after_loading_link_resource()
4062{
4063    // https://html.spec.whatwg.org/multipage/links.html#rel-icon
…lines 4064–5579 unchanged (1516 lines)
5580
5581Painting::ViewportPaintable* Document::paintable()
5582{
5583    return static_cast<Painting::ViewportPaintable*>(Node::paintable());
5584}
5585
5586Painting::ViewportPaintable const* Document::unsafe_paintable() const
5587{
5588    return static_cast<Painting::ViewportPaintable const*>(Node::unsafe_paintable());
5589}
5590
5591Painting::ViewportPaintable* Document::unsafe_paintable()
5592{
5593    return static_cast<Painting::ViewportPaintable*>(Node::unsafe_paintable());
5594}
5595
5596// https://html.spec.whatwg.org/multipage/browsing-the-web.html#restore-the-history-object-state
5597void Document::restore_the_history_object_state(GC::Ref<HTML::SessionHistoryEntry> entry)
5598{
5599    // 1. Let targetRealm be document's relevant realm.
5600    auto& target_realm = HTML::relevant_realm(*this);
…lines 5601–6669 unchanged (1069 lines)
6670// https://drafts.csswg.org/css-position-4/#process-top-layer-removals
6671void Document::process_top_layer_removals()
6672{
6673    // 1. For each element el in doc’s pending top layer removals: if el’s computed value of overlay is none, or el is
6674    //    not rendered, remove el from doc’s top layer and pending top layer removals.
6675    GC::RootVector<GC::Ref<Element>> elements_to_remove(heap());
6676    // NB: Called during top layer processing.
6677    for (auto& element : m_top_layer_pending_removals) {
6678        // FIXME: Implement overlay property
6679        if (!element->unsafe_paintable()) {
6680            elements_to_remove.append(element);
6681        }
6682    }
6683
6684    for (auto& element : elements_to_remove) {
6685        m_top_layer_elements.remove(element);
6686        m_top_layer_pending_removals.remove(element);
6687    }
…lines 6688–6705 unchanged (18 lines)
6706    // 3. Return null.
6707    return {};
6708}
6709
6710void Document::set_needs_to_refresh_scroll_state(bool b)
6711{
6712    // NB: Propagating scroll state invalidation.
6713    if (auto* paintable = this->unsafe_paintable())
6714        paintable->set_needs_to_refresh_scroll_state(b);
6715}
6716
6717Vector<GC::Root<Range>> Document::find_matching_text(String const& query, CaseSensitivity case_sensitivity)
6718{
6719    // Ensure the layout tree exists before searching for text matches.
…lines 6720–7994 unchanged (1275 lines)

Before…lines 1–519 unchanged (519 lines)
520
521        auto navigable = this->navigable();
522        if (!navigable || !navigable->is_focused())
523            return;
524
525        auto node = cursor_position->node();
526        if (node->paintable()) {
527            m_cursor_blink_state = !m_cursor_blink_state;
528            node->paintable()->set_needs_display();
529        }
530    });
531
532    HTML::main_thread_event_loop().register_document({}, *this);
533}
534
…lines 535–1159 unchanged (625 lines)
1160    m_needs_full_layout_tree_update = true;
1161}
1162
1163Color Document::background_color() const
1164{
1165    // CSS2 says we should use the HTML element's background color unless it's transparent...
1166    if (auto* html_element = this->html_element(); html_element && html_element->layout_node()) {
1167        auto color = html_element->layout_node()->computed_values().background_color();
1168        if (color.alpha())
1169            return color;
1170    }
1171
1172    // ...in which case we use the BODY element's background color.
1173    if (auto* body_element = body(); body_element && body_element->layout_node()) {
1174        auto color = body_element->layout_node()->computed_values().background_color();
1175        return color;
1176    }
1177
1178    // By default, the document is transparent.
1179    // The outermost canvas is colored by the PageHost.
1180    return Color::Transparent;
1181}
1182
1183Vector<CSS::BackgroundLayerData> const* Document::background_layers() const
1184{
1185    auto* body_element = body();
1186    if (!body_element)
1187        return {};
1188
1189    auto body_layout_node = body_element->layout_node();
1190    if (!body_layout_node)
1191        return {};
1192
1193    return &body_layout_node->background_layers();
1194}
1195
1196CSS::ImageRendering Document::background_image_rendering() const
1197{
1198    auto* body_element = body();
1199    if (!body_element)
1200        return CSS::ImageRendering::Auto;
1201
1202    auto body_layout_node = body_element->layout_node();
1203    if (!body_layout_node)
1204        return CSS::ImageRendering::Auto;
1205
1206    return body_layout_node->computed_values().image_rendering();
1207}
1208
…lines 1209–1392 unchanged (184 lines)
1393
1394static void propagate_scrollbar_width_to_viewport(Element& root_element, Layout::Viewport& viewport)
1395{
1396    // https://drafts.csswg.org/css-scrollbars/#scrollbar-width
1397    // UAs must apply the scrollbar-color value set on the root element to the viewport.
1398    auto& viewport_computed_values = viewport.mutable_computed_values();
1399    auto& root_element_computed_values = root_element.layout_node()->computed_values();
1400    viewport_computed_values.set_scrollbar_width(root_element_computed_values.scrollbar_width());
1401}
1402
1403// https://drafts.csswg.org/css-overflow-3/#overflow-propagation
1404static void propagate_overflow_to_viewport(Element& root_element, Layout::Viewport& viewport)
1405{
…lines 1406–1413 unchanged (8 lines)
1414    auto* body_element = root_element.first_child_of_type<HTML::HTMLBodyElement>();
1415    if (body_element && !body_element->computed_properties()->contain().is_empty())
1416        return;
1417
1418    // UAs must apply the overflow-* values set on the root element to the viewport
1419    // when the root element’s display value is not none.
1420    auto overflow_origin_node = root_element.layout_node();
1421    auto& viewport_computed_values = viewport.mutable_computed_values();
1422
1423    // However, when the root element is an [HTML] html element (including XML syntax for HTML)
1424    // whose overflow value is visible (in both axes), and that element has as a child
1425    // a body element whose display value is also not none,
1426    // user agents must instead apply the overflow-* values of the first such child element to the viewport.
1427    if (root_element.is_html_html_element()) {
1428        auto root_element_layout_node = root_element.layout_node();
1429        auto& root_element_computed_values = root_element_layout_node->mutable_computed_values();
1430        if (root_element_computed_values.overflow_x() == CSS::Overflow::Visible && root_element_computed_values.overflow_y() == CSS::Overflow::Visible) {
1431            auto* body_element = root_element.first_child_of_type<HTML::HTMLBodyElement>();
1432            if (body_element && body_element->layout_node())
1433                overflow_origin_node = body_element->layout_node();
1434        }
1435    }
1436
1437    // If 'visible' is applied to the viewport, it must be interpreted as 'auto'. If 'clip' is applied to the viewport, it must be interpreted as 'hidden'.
1438    auto& overflow_origin_computed_values = overflow_origin_node->mutable_computed_values();
1439    auto overflow_x_to_apply = overflow_origin_computed_values.overflow_x();
…lines 1440–1458 unchanged (19 lines)
1459
1460void Document::update_layout(UpdateLayoutReason reason)
1461{
1462    auto navigable = this->navigable();
1463    if (!navigable || navigable->active_document() != this)
1464        return;
1465
1466    update_style();
1467
1468    auto svg_roots_to_relayout = move(m_svg_roots_needing_relayout);
1469
1470    if (m_layout_root && !m_layout_root->needs_layout_update() && svg_roots_to_relayout.is_empty())
1471        return;
1472
1473    // NOTE: If this is a document hosting <template> contents, layout is unnecessary.
1474    if (m_created_for_appropriate_template_contents)
1475        return;
1476
1477    auto const needs_layout_tree_rebuild = !m_layout_root || needs_layout_tree_update() || child_needs_layout_tree_update() || needs_full_layout_tree_update();
…lines 1478–1500 unchanged (23 lines)
1501
1502    auto timer = Core::ElapsedTimer::start_new(Core::TimerType::Precise);
1503
1504    if (needs_layout_tree_rebuild) {
1505        Layout::TreeBuilder tree_builder;
1506        m_layout_root = as<Layout::Viewport>(*tree_builder.build(*this));
1507
1508        if (document_element && document_element->layout_node()) {
1509            propagate_overflow_to_viewport(*document_element, *m_layout_root);
1510            propagate_scrollbar_width_to_viewport(*document_element, *m_layout_root);
1511        }
1512
1513        set_needs_full_layout_tree_update(false);
1514
1515        if constexpr (UPDATE_LAYOUT_DEBUG) {
1516            dbgln("TREEBUILD {} µs", timer.elapsed_time().to_microseconds());
1517        }
…lines 1518–1555 unchanged (38 lines)
1556        Layout::BlockFormattingContext root_formatting_context(layout_state, Layout::LayoutMode::Normal, *m_layout_root, nullptr);
1557
1558        auto& viewport = static_cast<Layout::Viewport&>(*m_layout_root);
1559        auto& viewport_state = layout_state.get_mutable(viewport);
1560        viewport_state.set_content_width(viewport_rect.width());
1561        viewport_state.set_content_height(viewport_rect.height());
1562
1563        if (document_element && document_element->layout_node()) {
1564            auto& icb_state = layout_state.get_mutable(as<Layout::NodeWithStyleAndBoxModelMetrics>(*document_element->layout_node()));
1565            icb_state.set_content_width(viewport_rect.width());
1566        }
1567
1568        root_formatting_context.run(
1569            Layout::AvailableSpace(
1570                Layout::AvailableSize::make_definite(viewport_rect.width()),
…lines 1571–1574 unchanged (4 lines)
1575
1576    // Broadcast the current viewport rect to any new paintables, so they know whether they're visible or not.
1577    inform_all_viewport_clients_about_the_current_viewport_rect();
1578
1579    m_document->set_needs_display();
1580    set_needs_to_resolve_paint_only_properties();
1581
1582    paintable()->assign_scroll_frames();
1583
1584    set_needs_accumulated_visual_contexts_update(true);
1585    update_paint_and_hit_testing_properties_if_needed();
1586
1587    if (auto range = get_selection()->range()) {
1588        paintable()->recompute_selection_states(*range);
1589    }
1590
1591    // Collect elements with content-visibility: auto. This is used in the HTML event loop to avoid traversing the whole tree every time.
1592    Vector<GC::Ref<Painting::PaintableBox>> paintable_boxes_with_auto_content_visibility;
1593    paintable()->for_each_in_subtree_of_type<Painting::PaintableBox>([&](auto& paintable_box) {
1594        if (paintable_box.dom_node()
1595            && paintable_box.dom_node()->is_element()
1596            && paintable_box.computed_values().content_visibility() == CSS::ContentVisibility::Auto) {
1597            paintable_boxes_with_auto_content_visibility.append(paintable_box);
1598        }
1599        return TraversalDecision::Continue;
1600    });
1601    paintable()->set_paintable_boxes_with_auto_content_visibility(move(paintable_boxes_with_auto_content_visibility));
1602
1603    m_layout_root->for_each_in_inclusive_subtree([](auto& node) {
1604        node.reset_needs_layout_update();
1605        return TraversalDecision::Continue;
1606    });
1607
1608    if constexpr (UPDATE_LAYOUT_DEBUG) {
1609        dbgln("LAYOUT {} {} µs", to_string(reason), timer.elapsed_time().to_microseconds());
1610    }
1611}
1612
1613[[nodiscard]] static CSS::RequiredInvalidationAfterStyleChange update_style_recursively(Node& node, CSS::StyleComputer& style_computer, bool needs_inherited_style_update, bool recompute_elements_depending_on_custom_properties, bool parent_display_changed)
1614{
1615    bool const needs_full_style_update = node.document().needs_full_style_update();
1616    CSS::RequiredInvalidationAfterStyleChange invalidation;
1617
1618    if (node.is_element())
…lines 1619–1645 unchanged (27 lines)
1646                        assigned_node->set_needs_style_update(true);
1647                    });
1648                }
1649            }
1650        }
1651    }
1652    if (node_invalidation.relayout && node.layout_node()) {
1653        node.layout_node()->set_needs_layout_update(SetNeedsLayoutReason::StyleChange);
1654    }
1655    if (node_invalidation.rebuild_layout_tree) {
1656        // We mark layout tree for rebuild starting from parent element to correctly invalidate
1657        // "display" property change to/from "contents" value.
1658        if (auto parent_element = node.parent_element()) {
1659            parent_element->set_needs_layout_tree_update(true, SetNeedsLayoutTreeUpdateReason::StyleChange);
1660        } else {
…lines 1661–1815 unchanged (155 lines)
1816
1817    m_needs_animated_style_update = false;
1818}
1819
1820void Document::update_paint_and_hit_testing_properties_if_needed()
1821{
1822    if (auto* paintable = this->paintable()) {
1823        paintable->refresh_scroll_state();
1824    }
1825
1826    if (m_needs_to_resolve_paint_only_properties) {
1827        m_needs_to_resolve_paint_only_properties = false;
1828        if (auto* paintable = this->paintable()) {
1829            paintable->resolve_paint_only_properties();
1830        }
1831    }
1832
1833    if (m_needs_accumulated_visual_contexts_update) {
1834        m_needs_accumulated_visual_contexts_update = false;
1835        if (auto* paintable = this->paintable()) {
1836            paintable->assign_accumulated_visual_contexts();
1837        }
1838    }
1839}
1840
1841void Document::set_normal_link_color(Color color)
1842{
1843    m_normal_link_color = color;
…lines 1844–1917 unchanged (74 lines)
1918            // 3. Let color be the result of parsing value.
1919            auto css_value = parse_css_value(context, value, CSS::PropertyID::Color);
1920
1921            // 4. If color is not failure, then return color.
1922            if (!css_value.is_null() && css_value->has_color()) {
1923                CSS::ColorResolutionContext color_resolution_context {};
1924                if (html_element() && html_element()->layout_node()) {
1925                    color_resolution_context = CSS::ColorResolutionContext::for_layout_node_with_style(*html_element()->layout_node());
1926                }
1927
1928                theme_color = css_value->to_color(color_resolution_context).value();
1929                return TraversalDecision::Break;
1930            }
1931        }
…lines 1932–1942 unchanged (11 lines)
1943}
1944
1945Layout::Viewport* Document::layout_node()
1946{
1947    return static_cast<Layout::Viewport*>(Node::layout_node());
1948}
1949
1950void Document::set_inspected_node(GC::Ptr<Node> node)
1951{
1952    m_inspected_node = node;
1953}
1954
1955void Document::set_highlighted_node(GC::Ptr<Node> node, Optional<CSS::PseudoElement> pseudo_element)
…lines 1956–1967 unchanged (12 lines)
1968}
1969
1970GC::Ptr<Layout::Node> Document::highlighted_layout_node()
1971{
1972    if (!m_highlighted_node)
1973        return nullptr;
1974
1975    if (!m_highlighted_pseudo_element.has_value() || !m_highlighted_node->is_element())
1976        return m_highlighted_node->layout_node();
1977
1978    auto const& element = static_cast<Element const&>(*m_highlighted_node);
1979    return element.get_pseudo_element_node(m_highlighted_pseudo_element.value());
1980}
1981
1982static Node* find_common_ancestor(Node* a, Node* b)
…lines 1983–2747 unchanged (765 lines)
2748    auto* new_focused_element = as_if<Element>(node.ptr());
2749    if (new_focused_element)
2750        new_focused_element->did_receive_focus();
2751
2752    reset_cursor_blink_cycle();
2753
2754    if (paintable())
2755        paintable()->set_needs_display();
2756
2757    // Scroll the viewport if necessary to make the newly focused element visible.
2758    if (new_focused_element) {
2759        new_focused_element->queue_an_element_task(HTML::Task::Source::UserInteraction, [new_focused_element] {
2760            if (new_focused_element->document().focused_area().ptr() != new_focused_element)
2761                return;
…lines 2762–2797 unchanged (36 lines)
2798    } else {
2799        invalidate_style_for_elements_affected_by_pseudo_class_change(CSS::PseudoClass::Active, m_active_element, *common_ancestor, element);
2800    }
2801
2802    m_active_element = element;
2803
2804    if (paintable())
2805        paintable()->set_needs_display();
2806}
2807
2808void Document::set_target_element(GC::Ptr<Element> element)
2809{
2810    if (m_target_element.ptr() == element)
2811        return;
…lines 2812–2829 unchanged (18 lines)
2830    } else {
2831        invalidate_style_for_elements_affected_by_pseudo_class_change(CSS::PseudoClass::Target, m_target_element, *common_ancestor, element);
2832    }
2833
2834    m_target_element = element;
2835
2836    if (paintable())
2837        paintable()->set_needs_display();
2838}
2839
2840// https://html.spec.whatwg.org/multipage/browsing-the-web.html#the-indicated-part-of-the-document
2841Document::IndicatedPart Document::determine_the_indicated_part() const
2842{
2843    // For an HTML document document, the following processing model must be followed to determine its indicated part:
…lines 2844–4013 unchanged (1170 lines)
4014    },
4015        m_page_showing);
4016}
4017
4018void Document::invalidate_stacking_context_tree()
4019{
4020    if (auto* paintable_box = this->paintable_box())
4021        paintable_box->invalidate_stacking_context();
4022}
4023
4024void Document::check_favicon_after_loading_link_resource()
4025{
4026    // https://html.spec.whatwg.org/multipage/links.html#rel-icon
…lines 4027–5541 unchanged (1515 lines)
5542}
5543
5544Painting::ViewportPaintable* Document::paintable()
5545{
5546    return static_cast<Painting::ViewportPaintable*>(Node::paintable());
5547}
5548
5549// https://html.spec.whatwg.org/multipage/browsing-the-web.html#restore-the-history-object-state
5550void Document::restore_the_history_object_state(GC::Ref<HTML::SessionHistoryEntry> entry)
5551{
5552    // 1. Let targetRealm be document's relevant realm.
5553    auto& target_realm = HTML::relevant_realm(*this);
5554
…lines 5555–6622 unchanged (1068 lines)
6623// https://drafts.csswg.org/css-position-4/#process-top-layer-removals
6624void Document::process_top_layer_removals()
6625{
6626    // 1. For each element el in doc’s pending top layer removals: if el’s computed value of overlay is none, or el is
6627    //    not rendered, remove el from doc’s top layer and pending top layer removals.
6628    GC::RootVector<GC::Ref<Element>> elements_to_remove(heap());
6629    for (auto& element : m_top_layer_pending_removals) {
6630        // FIXME: Implement overlay property
6631        if (!element->paintable()) {
6632            elements_to_remove.append(element);
6633        }
6634    }
6635
6636    for (auto& element : elements_to_remove) {
6637        m_top_layer_elements.remove(element);
6638        m_top_layer_pending_removals.remove(element);
6639    }
…lines 6640–6657 unchanged (18 lines)
6658    // 3. Return null.
6659    return {};
6660}
6661
6662void Document::set_needs_to_refresh_scroll_state(bool b)
6663{
6664    if (auto* paintable = this->paintable())
6665        paintable->set_needs_to_refresh_scroll_state(b);
6666}
6667
6668Vector<GC::Root<Range>> Document::find_matching_text(String const& query, CaseSensitivity case_sensitivity)
6669{
6670    // Ensure the layout tree exists before searching for text matches.
…lines 6671–7945 unchanged (1275 lines)

After…lines 1–519 unchanged (519 lines)
520
521        auto navigable = this->navigable();
522        if (!navigable || !navigable->is_focused())
523            return;
524
525        auto node = cursor_position->node();
526        if (node->unsafe_paintable()) {
527            m_cursor_blink_state = !m_cursor_blink_state;
528            node->set_needs_display();
529        }
530    });
531
532    HTML::main_thread_event_loop().register_document({}, *this);
533}
534
…lines 535–1159 unchanged (625 lines)
1160    m_needs_full_layout_tree_update = true;
1161}
1162
1163Color Document::background_color() const
1164{
1165    // CSS2 says we should use the HTML element's background color unless it's transparent...
1166    // NB: Called during resolve_paint_properties() inside update_layout().
1167    if (auto* html_element = this->html_element(); html_element && html_element->unsafe_layout_node()) {
1168        auto color = html_element->unsafe_layout_node()->computed_values().background_color();
1169        if (color.alpha())
1170            return color;
1171    }
1172
1173    // ...in which case we use the BODY element's background color.
1174    if (auto* body_element = body(); body_element && body_element->unsafe_layout_node()) {
1175        auto color = body_element->unsafe_layout_node()->computed_values().background_color();
1176        return color;
1177    }
1178
1179    // By default, the document is transparent.
1180    // The outermost canvas is colored by the PageHost.
1181    return Color::Transparent;
1182}
1183
1184Vector<CSS::BackgroundLayerData> const* Document::background_layers() const
1185{
1186    auto* body_element = body();
1187    if (!body_element)
1188        return {};
1189
1190    // NB: Called during resolve_paint_properties() inside update_layout().
1191    auto body_layout_node = body_element->unsafe_layout_node();
1192    if (!body_layout_node)
1193        return {};
1194
1195    return &body_layout_node->background_layers();
1196}
1197
1198CSS::ImageRendering Document::background_image_rendering() const
1199{
1200    auto* body_element = body();
1201    if (!body_element)
1202        return CSS::ImageRendering::Auto;
1203
1204    // NB: Called during resolve_paint_properties() inside update_layout().
1205    auto body_layout_node = body_element->unsafe_layout_node();
1206    if (!body_layout_node)
1207        return CSS::ImageRendering::Auto;
1208
1209    return body_layout_node->computed_values().image_rendering();
1210}
1211
…lines 1212–1395 unchanged (184 lines)
1396
1397static void propagate_scrollbar_width_to_viewport(Element& root_element, Layout::Viewport& viewport)
1398{
1399    // https://drafts.csswg.org/css-scrollbars/#scrollbar-width
1400    // UAs must apply the scrollbar-color value set on the root element to the viewport.
1401    auto& viewport_computed_values = viewport.mutable_computed_values();
1402    // NB: Called during layout tree construction.
1403    auto& root_element_computed_values = root_element.unsafe_layout_node()->computed_values();
1404    viewport_computed_values.set_scrollbar_width(root_element_computed_values.scrollbar_width());
1405}
1406
1407// https://drafts.csswg.org/css-overflow-3/#overflow-propagation
1408static void propagate_overflow_to_viewport(Element& root_element, Layout::Viewport& viewport)
1409{
…lines 1410–1417 unchanged (8 lines)
1418    auto* body_element = root_element.first_child_of_type<HTML::HTMLBodyElement>();
1419    if (body_element && !body_element->computed_properties()->contain().is_empty())
1420        return;
1421
1422    // UAs must apply the overflow-* values set on the root element to the viewport
1423    // when the root element’s display value is not none.
1424    // NB: Called during layout tree construction.
1425    auto overflow_origin_node = root_element.unsafe_layout_node();
1426    auto& viewport_computed_values = viewport.mutable_computed_values();
1427
1428    // However, when the root element is an [HTML] html element (including XML syntax for HTML)
1429    // whose overflow value is visible (in both axes), and that element has as a child
1430    // a body element whose display value is also not none,
1431    // user agents must instead apply the overflow-* values of the first such child element to the viewport.
1432    if (root_element.is_html_html_element()) {
1433        auto root_element_layout_node = root_element.unsafe_layout_node();
1434        auto& root_element_computed_values = root_element_layout_node->mutable_computed_values();
1435        if (root_element_computed_values.overflow_x() == CSS::Overflow::Visible && root_element_computed_values.overflow_y() == CSS::Overflow::Visible) {
1436            auto* body_element = root_element.first_child_of_type<HTML::HTMLBodyElement>();
1437            if (body_element && body_element->unsafe_layout_node())
1438                overflow_origin_node = body_element->unsafe_layout_node();
1439        }
1440    }
1441
1442    // If 'visible' is applied to the viewport, it must be interpreted as 'auto'. If 'clip' is applied to the viewport, it must be interpreted as 'hidden'.
1443    auto& overflow_origin_computed_values = overflow_origin_node->mutable_computed_values();
1444    auto overflow_x_to_apply = overflow_origin_computed_values.overflow_x();
…lines 1445–1464 unchanged (20 lines)
1465void Document::update_layout(UpdateLayoutReason reason)
1466{
1467    auto navigable = this->navigable();
1468    if (!navigable || navigable->active_document() != this)
1469        return;
1470
1471    VERIFY(!m_is_running_update_layout);
1472    ScopeGuard guard = [&] { m_is_running_update_layout = false; };
1473    m_is_running_update_layout = true;
1474
1475    update_style();
1476
1477    if (layout_is_up_to_date())
1478        return;
1479
1480    auto svg_roots_to_relayout = move(m_svg_roots_needing_relayout);
1481
1482    // NOTE: If this is a document hosting <template> contents, layout is unnecessary.
1483    if (m_created_for_appropriate_template_contents)
1484        return;
…lines 1485–1510 unchanged (26 lines)
1511    auto timer = Core::ElapsedTimer::start_new(Core::TimerType::Precise);
1512
1513    if (needs_layout_tree_rebuild) {
1514        Layout::TreeBuilder tree_builder;
1515        m_layout_root = as<Layout::Viewport>(*tree_builder.build(*this));
1516
1517        // NB: Called during layout update.
1518        if (document_element && document_element->unsafe_layout_node()) {
1519            propagate_overflow_to_viewport(*document_element, *m_layout_root);
1520            propagate_scrollbar_width_to_viewport(*document_element, *m_layout_root);
1521        }
1522
1523        set_needs_full_layout_tree_update(false);
1524
1525        if constexpr (UPDATE_LAYOUT_DEBUG) {
1526            dbgln("TREEBUILD {} µs", timer.elapsed_time().to_microseconds());
1527        }
…lines 1528–1566 unchanged (39 lines)
1567
1568        auto& viewport = static_cast<Layout::Viewport&>(*m_layout_root);
1569        auto& viewport_state = layout_state.get_mutable(viewport);
1570        viewport_state.set_content_width(viewport_rect.width());
1571        viewport_state.set_content_height(viewport_rect.height());
1572
1573        // NB: Called during layout update.
1574        if (document_element && document_element->unsafe_layout_node()) {
1575            auto& icb_state = layout_state.get_mutable(as<Layout::NodeWithStyleAndBoxModelMetrics>(*document_element->unsafe_layout_node()));
1576            icb_state.set_content_width(viewport_rect.width());
1577        }
1578
1579        root_formatting_context.run(
1580            Layout::AvailableSpace(
1581                Layout::AvailableSize::make_definite(viewport_rect.width()),
…lines 1582–1585 unchanged (4 lines)
1586
1587    // Broadcast the current viewport rect to any new paintables, so they know whether they're visible or not.
1588    inform_all_viewport_clients_about_the_current_viewport_rect();
1589
1590    m_document->set_needs_display();
1591    set_needs_to_resolve_paint_only_properties();
1592
1593    // NB: Called during layout update.
1594    unsafe_paintable()->assign_scroll_frames();
1595
1596    set_needs_accumulated_visual_contexts_update(true);
1597    update_paint_and_hit_testing_properties_if_needed();
1598
1599    if (auto range = get_selection()->range()) {
1600        unsafe_paintable()->recompute_selection_states(*range);
1601    }
1602
1603    // Collect elements with content-visibility: auto. This is used in the HTML event loop to avoid traversing the whole tree every time.
1604    Vector<GC::Ref<Painting::PaintableBox>> paintable_boxes_with_auto_content_visibility;
1605    unsafe_paintable()->for_each_in_subtree_of_type<Painting::PaintableBox>([&](auto& paintable_box) {
1606        if (paintable_box.dom_node()
1607            && paintable_box.dom_node()->is_element()
1608            && paintable_box.computed_values().content_visibility() == CSS::ContentVisibility::Auto) {
1609            paintable_boxes_with_auto_content_visibility.append(paintable_box);
1610        }
1611        return TraversalDecision::Continue;
1612    });
1613    unsafe_paintable()->set_paintable_boxes_with_auto_content_visibility(move(paintable_boxes_with_auto_content_visibility));
1614
1615    m_layout_root->for_each_in_inclusive_subtree([](auto& node) {
1616        node.reset_needs_layout_update();
1617        return TraversalDecision::Continue;
1618    });
1619
1620    if constexpr (UPDATE_LAYOUT_DEBUG) {
1621        dbgln("LAYOUT {} {} µs", to_string(reason), timer.elapsed_time().to_microseconds());
1622    }
1623
1624    VERIFY(layout_is_up_to_date());
1625}
1626
1627bool Document::layout_is_up_to_date() const
1628{
1629    if (!navigable() || navigable()->active_document() != this)
1630        return true;
1631    if (!m_layout_root)
1632        return false;
1633    return !m_layout_root->needs_layout_update()
1634        && !needs_layout_tree_update()
1635        && !child_needs_layout_tree_update()
1636        && !needs_full_layout_tree_update()
1637        && m_svg_roots_needing_relayout.is_empty();
1638}
1639
1640[[nodiscard]] static CSS::RequiredInvalidationAfterStyleChange update_style_recursively(Node& node, CSS::StyleComputer& style_computer, bool needs_inherited_style_update, bool recompute_elements_depending_on_custom_properties, bool parent_display_changed)
1641{
1642    bool const needs_full_style_update = node.document().needs_full_style_update();
1643    CSS::RequiredInvalidationAfterStyleChange invalidation;
1644
…lines 1645–1672 unchanged (28 lines)
1673                        assigned_node->set_needs_style_update(true);
1674                    });
1675                }
1676            }
1677        }
1678    }
1679    if (node_invalidation.relayout)
1680        node.set_needs_layout_update(SetNeedsLayoutReason::StyleChange);
1681    if (node_invalidation.rebuild_layout_tree) {
1682        // We mark layout tree for rebuild starting from parent element to correctly invalidate
1683        // "display" property change to/from "contents" value.
1684        if (auto parent_element = node.parent_element()) {
1685            parent_element->set_needs_layout_tree_update(true, SetNeedsLayoutTreeUpdateReason::StyleChange);
1686        } else {
…lines 1687–1841 unchanged (155 lines)
1842
1843    m_needs_animated_style_update = false;
1844}
1845
1846void Document::update_paint_and_hit_testing_properties_if_needed()
1847{
1848    // NB: Called during paint property resolution.
1849    if (auto* paintable = this->unsafe_paintable()) {
1850        paintable->refresh_scroll_state();
1851    }
1852
1853    if (m_needs_to_resolve_paint_only_properties) {
1854        m_needs_to_resolve_paint_only_properties = false;
1855        if (auto* paintable = this->unsafe_paintable()) {
1856            paintable->resolve_paint_only_properties();
1857        }
1858    }
1859
1860    if (m_needs_accumulated_visual_contexts_update) {
1861        m_needs_accumulated_visual_contexts_update = false;
1862        if (auto* paintable = this->unsafe_paintable()) {
1863            paintable->assign_accumulated_visual_contexts();
1864        }
1865    }
1866}
1867
1868void Document::set_normal_link_color(Color color)
1869{
1870    m_normal_link_color = color;
…lines 1871–1944 unchanged (74 lines)
1945            // 3. Let color be the result of parsing value.
1946            auto css_value = parse_css_value(context, value, CSS::PropertyID::Color);
1947
1948            // 4. If color is not failure, then return color.
1949            if (!css_value.is_null() && css_value->has_color()) {
1950                CSS::ColorResolutionContext color_resolution_context {};
1951                // NB: Called during theme color computation, layout may be stale.
1952                if (html_element() && html_element()->unsafe_layout_node()) {
1953                    color_resolution_context = CSS::ColorResolutionContext::for_layout_node_with_style(*html_element()->unsafe_layout_node());
1954                }
1955
1956                theme_color = css_value->to_color(color_resolution_context).value();
1957                return TraversalDecision::Break;
1958            }
1959        }
…lines 1960–1971 unchanged (12 lines)
1972
1973Layout::Viewport* Document::layout_node()
1974{
1975    return static_cast<Layout::Viewport*>(Node::layout_node());
1976}
1977
1978Layout::Viewport const* Document::unsafe_layout_node() const
1979{
1980    return static_cast<Layout::Viewport const*>(Node::unsafe_layout_node());
1981}
1982
1983Layout::Viewport* Document::unsafe_layout_node()
1984{
1985    return static_cast<Layout::Viewport*>(Node::unsafe_layout_node());
1986}
1987
1988void Document::set_inspected_node(GC::Ptr<Node> node)
1989{
1990    m_inspected_node = node;
1991}
1992
…lines 1993–2006 unchanged (14 lines)
2007
2008GC::Ptr<Layout::Node> Document::highlighted_layout_node()
2009{
2010    if (!m_highlighted_node)
2011        return nullptr;
2012
2013    // NB: Called during resolve_paint_properties() inside update_layout().
2014    if (!m_highlighted_pseudo_element.has_value() || !m_highlighted_node->is_element())
2015        return m_highlighted_node->unsafe_layout_node();
2016
2017    auto const& element = static_cast<Element const&>(*m_highlighted_node);
2018    return element.get_pseudo_element_node(m_highlighted_pseudo_element.value());
2019}
2020
2021static Node* find_common_ancestor(Node* a, Node* b)
…lines 2022–2785 unchanged (764 lines)
2786
2787    auto* new_focused_element = as_if<Element>(node.ptr());
2788    if (new_focused_element)
2789        new_focused_element->did_receive_focus();
2790
2791    reset_cursor_blink_cycle();
2792
2793    set_needs_display();
2794
2795    // Scroll the viewport if necessary to make the newly focused element visible.
2796    if (new_focused_element) {
2797        new_focused_element->queue_an_element_task(HTML::Task::Source::UserInteraction, [new_focused_element] {
2798            if (new_focused_element->document().focused_area().ptr() != new_focused_element)
2799                return;
…lines 2800–2834 unchanged (35 lines)
2835        }
2836    } else {
2837        invalidate_style_for_elements_affected_by_pseudo_class_change(CSS::PseudoClass::Active, m_active_element, *common_ancestor, element);
2838    }
2839
2840    m_active_element = element;
2841
2842    set_needs_display();
2843}
2844
2845void Document::set_target_element(GC::Ptr<Element> element)
2846{
2847    if (m_target_element.ptr() == element)
2848        return;
…lines 2849–2865 unchanged (17 lines)
2866        }
2867    } else {
2868        invalidate_style_for_elements_affected_by_pseudo_class_change(CSS::PseudoClass::Target, m_target_element, *common_ancestor, element);
2869    }
2870
2871    m_target_element = element;
2872
2873    set_needs_display();
2874}
2875
2876// https://html.spec.whatwg.org/multipage/browsing-the-web.html#the-indicated-part-of-the-document
2877Document::IndicatedPart Document::determine_the_indicated_part() const
2878{
2879    // For an HTML document document, the following processing model must be followed to determine its indicated part:
…lines 2880–4049 unchanged (1170 lines)
4050    },
4051        m_page_showing);
4052}
4053
4054void Document::invalidate_stacking_context_tree()
4055{
4056    // NB: Called during stacking context invalidation.
4057    if (auto* paintable_box = this->unsafe_paintable_box())
4058        paintable_box->invalidate_stacking_context();
4059}
4060
4061void Document::check_favicon_after_loading_link_resource()
4062{
4063    // https://html.spec.whatwg.org/multipage/links.html#rel-icon
…lines 4064–5579 unchanged (1516 lines)
5580
5581Painting::ViewportPaintable* Document::paintable()
5582{
5583    return static_cast<Painting::ViewportPaintable*>(Node::paintable());
5584}
5585
5586Painting::ViewportPaintable const* Document::unsafe_paintable() const
5587{
5588    return static_cast<Painting::ViewportPaintable const*>(Node::unsafe_paintable());
5589}
5590
5591Painting::ViewportPaintable* Document::unsafe_paintable()
5592{
5593    return static_cast<Painting::ViewportPaintable*>(Node::unsafe_paintable());
5594}
5595
5596// https://html.spec.whatwg.org/multipage/browsing-the-web.html#restore-the-history-object-state
5597void Document::restore_the_history_object_state(GC::Ref<HTML::SessionHistoryEntry> entry)
5598{
5599    // 1. Let targetRealm be document's relevant realm.
5600    auto& target_realm = HTML::relevant_realm(*this);
…lines 5601–6669 unchanged (1069 lines)
6670// https://drafts.csswg.org/css-position-4/#process-top-layer-removals
6671void Document::process_top_layer_removals()
6672{
6673    // 1. For each element el in doc’s pending top layer removals: if el’s computed value of overlay is none, or el is
6674    //    not rendered, remove el from doc’s top layer and pending top layer removals.
6675    GC::RootVector<GC::Ref<Element>> elements_to_remove(heap());
6676    // NB: Called during top layer processing.
6677    for (auto& element : m_top_layer_pending_removals) {
6678        // FIXME: Implement overlay property
6679        if (!element->unsafe_paintable()) {
6680            elements_to_remove.append(element);
6681        }
6682    }
6683
6684    for (auto& element : elements_to_remove) {
6685        m_top_layer_elements.remove(element);
6686        m_top_layer_pending_removals.remove(element);
6687    }
…lines 6688–6705 unchanged (18 lines)
6706    // 3. Return null.
6707    return {};
6708}
6709
6710void Document::set_needs_to_refresh_scroll_state(bool b)
6711{
6712    // NB: Propagating scroll state invalidation.
6713    if (auto* paintable = this->unsafe_paintable())
6714        paintable->set_needs_to_refresh_scroll_state(b);
6715}
6716
6717Vector<GC::Root<Range>> Document::find_matching_text(String const& query, CaseSensitivity case_sensitivity)
6718{
6719    // Ensure the layout tree exists before searching for text matches.
…lines 6720–7994 unchanged (1275 lines)

Before…lines 1–519 unchanged (519 lines)
520
521        auto navigable = this->navigable();
522        if (!navigable || !navigable->is_focused())
523            return;
524
525        auto node = cursor_position->node();
526        if (node->paintable()) {
527            m_cursor_blink_state = !m_cursor_blink_state;
528            node->paintable()->set_needs_display();
529        }
530    });
531
532    HTML::main_thread_event_loop().register_document({}, *this);
533}
534
…lines 535–1159 unchanged (625 lines)
1160    m_needs_full_layout_tree_update = true;
1161}
1162
1163Color Document::background_color() const
1164{
1165    // CSS2 says we should use the HTML element's background color unless it's transparent...
1166    if (auto* html_element = this->html_element(); html_element && html_element->layout_node()) {
1167        auto color = html_element->layout_node()->computed_values().background_color();
1168        if (color.alpha())
1169            return color;
1170    }
1171
1172    // ...in which case we use the BODY element's background color.
1173    if (auto* body_element = body(); body_element && body_element->layout_node()) {
1174        auto color = body_element->layout_node()->computed_values().background_color();
1175        return color;
1176    }
1177
1178    // By default, the document is transparent.
1179    // The outermost canvas is colored by the PageHost.
1180    return Color::Transparent;
1181}
1182
1183Vector<CSS::BackgroundLayerData> const* Document::background_layers() const
1184{
1185    auto* body_element = body();
1186    if (!body_element)
1187        return {};
1188
1189    auto body_layout_node = body_element->layout_node();
1190    if (!body_layout_node)
1191        return {};
1192
1193    return &body_layout_node->background_layers();
1194}
1195
1196CSS::ImageRendering Document::background_image_rendering() const
1197{
1198    auto* body_element = body();
1199    if (!body_element)
1200        return CSS::ImageRendering::Auto;
1201
1202    auto body_layout_node = body_element->layout_node();
1203    if (!body_layout_node)
1204        return CSS::ImageRendering::Auto;
1205
1206    return body_layout_node->computed_values().image_rendering();
1207}
1208
…lines 1209–1392 unchanged (184 lines)
1393
1394static void propagate_scrollbar_width_to_viewport(Element& root_element, Layout::Viewport& viewport)
1395{
1396    // https://drafts.csswg.org/css-scrollbars/#scrollbar-width
1397    // UAs must apply the scrollbar-color value set on the root element to the viewport.
1398    auto& viewport_computed_values = viewport.mutable_computed_values();
1399    auto& root_element_computed_values = root_element.layout_node()->computed_values();
1400    viewport_computed_values.set_scrollbar_width(root_element_computed_values.scrollbar_width());
1401}
1402
1403// https://drafts.csswg.org/css-overflow-3/#overflow-propagation
1404static void propagate_overflow_to_viewport(Element& root_element, Layout::Viewport& viewport)
1405{
…lines 1406–1413 unchanged (8 lines)
1414    auto* body_element = root_element.first_child_of_type<HTML::HTMLBodyElement>();
1415    if (body_element && !body_element->computed_properties()->contain().is_empty())
1416        return;
1417
1418    // UAs must apply the overflow-* values set on the root element to the viewport
1419    // when the root element’s display value is not none.
1420    auto overflow_origin_node = root_element.layout_node();
1421    auto& viewport_computed_values = viewport.mutable_computed_values();
1422
1423    // However, when the root element is an [HTML] html element (including XML syntax for HTML)
1424    // whose overflow value is visible (in both axes), and that element has as a child
1425    // a body element whose display value is also not none,
1426    // user agents must instead apply the overflow-* values of the first such child element to the viewport.
1427    if (root_element.is_html_html_element()) {
1428        auto root_element_layout_node = root_element.layout_node();
1429        auto& root_element_computed_values = root_element_layout_node->mutable_computed_values();
1430        if (root_element_computed_values.overflow_x() == CSS::Overflow::Visible && root_element_computed_values.overflow_y() == CSS::Overflow::Visible) {
1431            auto* body_element = root_element.first_child_of_type<HTML::HTMLBodyElement>();
1432            if (body_element && body_element->layout_node())
1433                overflow_origin_node = body_element->layout_node();
1434        }
1435    }
1436
1437    // If 'visible' is applied to the viewport, it must be interpreted as 'auto'. If 'clip' is applied to the viewport, it must be interpreted as 'hidden'.
1438    auto& overflow_origin_computed_values = overflow_origin_node->mutable_computed_values();
1439    auto overflow_x_to_apply = overflow_origin_computed_values.overflow_x();
…lines 1440–1458 unchanged (19 lines)
1459
1460void Document::update_layout(UpdateLayoutReason reason)
1461{
1462    auto navigable = this->navigable();
1463    if (!navigable || navigable->active_document() != this)
1464        return;
1465
1466    update_style();
1467
1468    auto svg_roots_to_relayout = move(m_svg_roots_needing_relayout);
1469
1470    if (m_layout_root && !m_layout_root->needs_layout_update() && svg_roots_to_relayout.is_empty())
1471        return;
1472
1473    // NOTE: If this is a document hosting <template> contents, layout is unnecessary.
1474    if (m_created_for_appropriate_template_contents)
1475        return;
1476
1477    auto const needs_layout_tree_rebuild = !m_layout_root || needs_layout_tree_update() || child_needs_layout_tree_update() || needs_full_layout_tree_update();
…lines 1478–1500 unchanged (23 lines)
1501
1502    auto timer = Core::ElapsedTimer::start_new(Core::TimerType::Precise);
1503
1504    if (needs_layout_tree_rebuild) {
1505        Layout::TreeBuilder tree_builder;
1506        m_layout_root = as<Layout::Viewport>(*tree_builder.build(*this));
1507
1508        if (document_element && document_element->layout_node()) {
1509            propagate_overflow_to_viewport(*document_element, *m_layout_root);
1510            propagate_scrollbar_width_to_viewport(*document_element, *m_layout_root);
1511        }
1512
1513        set_needs_full_layout_tree_update(false);
1514
1515        if constexpr (UPDATE_LAYOUT_DEBUG) {
1516            dbgln("TREEBUILD {} µs", timer.elapsed_time().to_microseconds());
1517        }
…lines 1518–1555 unchanged (38 lines)
1556        Layout::BlockFormattingContext root_formatting_context(layout_state, Layout::LayoutMode::Normal, *m_layout_root, nullptr);
1557
1558        auto& viewport = static_cast<Layout::Viewport&>(*m_layout_root);
1559        auto& viewport_state = layout_state.get_mutable(viewport);
1560        viewport_state.set_content_width(viewport_rect.width());
1561        viewport_state.set_content_height(viewport_rect.height());
1562
1563        if (document_element && document_element->layout_node()) {
1564            auto& icb_state = layout_state.get_mutable(as<Layout::NodeWithStyleAndBoxModelMetrics>(*document_element->layout_node()));
1565            icb_state.set_content_width(viewport_rect.width());
1566        }
1567
1568        root_formatting_context.run(
1569            Layout::AvailableSpace(
1570                Layout::AvailableSize::make_definite(viewport_rect.width()),
…lines 1571–1574 unchanged (4 lines)
1575
1576    // Broadcast the current viewport rect to any new paintables, so they know whether they're visible or not.
1577    inform_all_viewport_clients_about_the_current_viewport_rect();
1578
1579    m_document->set_needs_display();
1580    set_needs_to_resolve_paint_only_properties();
1581
1582    paintable()->assign_scroll_frames();
1583
1584    set_needs_accumulated_visual_contexts_update(true);
1585    update_paint_and_hit_testing_properties_if_needed();
1586
1587    if (auto range = get_selection()->range()) {
1588        paintable()->recompute_selection_states(*range);
1589    }
1590
1591    // Collect elements with content-visibility: auto. This is used in the HTML event loop to avoid traversing the whole tree every time.
1592    Vector<GC::Ref<Painting::PaintableBox>> paintable_boxes_with_auto_content_visibility;
1593    paintable()->for_each_in_subtree_of_type<Painting::PaintableBox>([&](auto& paintable_box) {
1594        if (paintable_box.dom_node()
1595            && paintable_box.dom_node()->is_element()
1596            && paintable_box.computed_values().content_visibility() == CSS::ContentVisibility::Auto) {
1597            paintable_boxes_with_auto_content_visibility.append(paintable_box);
1598        }
1599        return TraversalDecision::Continue;
1600    });
1601    paintable()->set_paintable_boxes_with_auto_content_visibility(move(paintable_boxes_with_auto_content_visibility));
1602
1603    m_layout_root->for_each_in_inclusive_subtree([](auto& node) {
1604        node.reset_needs_layout_update();
1605        return TraversalDecision::Continue;
1606    });
1607
1608    if constexpr (UPDATE_LAYOUT_DEBUG) {
1609        dbgln("LAYOUT {} {} µs", to_string(reason), timer.elapsed_time().to_microseconds());
1610    }
1611}
1612
1613[[nodiscard]] static CSS::RequiredInvalidationAfterStyleChange update_style_recursively(Node& node, CSS::StyleComputer& style_computer, bool needs_inherited_style_update, bool recompute_elements_depending_on_custom_properties, bool parent_display_changed)
1614{
1615    bool const needs_full_style_update = node.document().needs_full_style_update();
1616    CSS::RequiredInvalidationAfterStyleChange invalidation;
1617
1618    if (node.is_element())
…lines 1619–1645 unchanged (27 lines)
1646                        assigned_node->set_needs_style_update(true);
1647                    });
1648                }
1649            }
1650        }
1651    }
1652    if (node_invalidation.relayout && node.layout_node()) {
1653        node.layout_node()->set_needs_layout_update(SetNeedsLayoutReason::StyleChange);
1654    }
1655    if (node_invalidation.rebuild_layout_tree) {
1656        // We mark layout tree for rebuild starting from parent element to correctly invalidate
1657        // "display" property change to/from "contents" value.
1658        if (auto parent_element = node.parent_element()) {
1659            parent_element->set_needs_layout_tree_update(true, SetNeedsLayoutTreeUpdateReason::StyleChange);
1660        } else {
…lines 1661–1815 unchanged (155 lines)
1816
1817    m_needs_animated_style_update = false;
1818}
1819
1820void Document::update_paint_and_hit_testing_properties_if_needed()
1821{
1822    if (auto* paintable = this->paintable()) {
1823        paintable->refresh_scroll_state();
1824    }
1825
1826    if (m_needs_to_resolve_paint_only_properties) {
1827        m_needs_to_resolve_paint_only_properties = false;
1828        if (auto* paintable = this->paintable()) {
1829            paintable->resolve_paint_only_properties();
1830        }
1831    }
1832
1833    if (m_needs_accumulated_visual_contexts_update) {
1834        m_needs_accumulated_visual_contexts_update = false;
1835        if (auto* paintable = this->paintable()) {
1836            paintable->assign_accumulated_visual_contexts();
1837        }
1838    }
1839}
1840
1841void Document::set_normal_link_color(Color color)
1842{
1843    m_normal_link_color = color;
…lines 1844–1917 unchanged (74 lines)
1918            // 3. Let color be the result of parsing value.
1919            auto css_value = parse_css_value(context, value, CSS::PropertyID::Color);
1920
1921            // 4. If color is not failure, then return color.
1922            if (!css_value.is_null() && css_value->has_color()) {
1923                CSS::ColorResolutionContext color_resolution_context {};
1924                if (html_element() && html_element()->layout_node()) {
1925                    color_resolution_context = CSS::ColorResolutionContext::for_layout_node_with_style(*html_element()->layout_node());
1926                }
1927
1928                theme_color = css_value->to_color(color_resolution_context).value();
1929                return TraversalDecision::Break;
1930            }
1931        }
…lines 1932–1942 unchanged (11 lines)
1943}
1944
1945Layout::Viewport* Document::layout_node()
1946{
1947    return static_cast<Layout::Viewport*>(Node::layout_node());
1948}
1949
1950void Document::set_inspected_node(GC::Ptr<Node> node)
1951{
1952    m_inspected_node = node;
1953}
1954
1955void Document::set_highlighted_node(GC::Ptr<Node> node, Optional<CSS::PseudoElement> pseudo_element)
…lines 1956–1967 unchanged (12 lines)
1968}
1969
1970GC::Ptr<Layout::Node> Document::highlighted_layout_node()
1971{
1972    if (!m_highlighted_node)
1973        return nullptr;
1974
1975    if (!m_highlighted_pseudo_element.has_value() || !m_highlighted_node->is_element())
1976        return m_highlighted_node->layout_node();
1977
1978    auto const& element = static_cast<Element const&>(*m_highlighted_node);
1979    return element.get_pseudo_element_node(m_highlighted_pseudo_element.value());
1980}
1981
1982static Node* find_common_ancestor(Node* a, Node* b)
…lines 1983–2747 unchanged (765 lines)
2748    auto* new_focused_element = as_if<Element>(node.ptr());
2749    if (new_focused_element)
2750        new_focused_element->did_receive_focus();
2751
2752    reset_cursor_blink_cycle();
2753
2754    if (paintable())
2755        paintable()->set_needs_display();
2756
2757    // Scroll the viewport if necessary to make the newly focused element visible.
2758    if (new_focused_element) {
2759        new_focused_element->queue_an_element_task(HTML::Task::Source::UserInteraction, [new_focused_element] {
2760            if (new_focused_element->document().focused_area().ptr() != new_focused_element)
2761                return;
…lines 2762–2797 unchanged (36 lines)
2798    } else {
2799        invalidate_style_for_elements_affected_by_pseudo_class_change(CSS::PseudoClass::Active, m_active_element, *common_ancestor, element);
2800    }
2801
2802    m_active_element = element;
2803
2804    if (paintable())
2805        paintable()->set_needs_display();
2806}
2807
2808void Document::set_target_element(GC::Ptr<Element> element)
2809{
2810    if (m_target_element.ptr() == element)
2811        return;
…lines 2812–2829 unchanged (18 lines)
2830    } else {
2831        invalidate_style_for_elements_affected_by_pseudo_class_change(CSS::PseudoClass::Target, m_target_element, *common_ancestor, element);
2832    }
2833
2834    m_target_element = element;
2835
2836    if (paintable())
2837        paintable()->set_needs_display();
2838}
2839
2840// https://html.spec.whatwg.org/multipage/browsing-the-web.html#the-indicated-part-of-the-document
2841Document::IndicatedPart Document::determine_the_indicated_part() const
2842{
2843    // For an HTML document document, the following processing model must be followed to determine its indicated part:
…lines 2844–4013 unchanged (1170 lines)
4014    },
4015        m_page_showing);
4016}
4017
4018void Document::invalidate_stacking_context_tree()
4019{
4020    if (auto* paintable_box = this->paintable_box())
4021        paintable_box->invalidate_stacking_context();
4022}
4023
4024void Document::check_favicon_after_loading_link_resource()
4025{
4026    // https://html.spec.whatwg.org/multipage/links.html#rel-icon
…lines 4027–5541 unchanged (1515 lines)
5542}
5543
5544Painting::ViewportPaintable* Document::paintable()
5545{
5546    return static_cast<Painting::ViewportPaintable*>(Node::paintable());
5547}
5548
5549// https://html.spec.whatwg.org/multipage/browsing-the-web.html#restore-the-history-object-state
5550void Document::restore_the_history_object_state(GC::Ref<HTML::SessionHistoryEntry> entry)
5551{
5552    // 1. Let targetRealm be document's relevant realm.
5553    auto& target_realm = HTML::relevant_realm(*this);
5554
…lines 5555–6622 unchanged (1068 lines)
6623// https://drafts.csswg.org/css-position-4/#process-top-layer-removals
6624void Document::process_top_layer_removals()
6625{
6626    // 1. For each element el in doc’s pending top layer removals: if el’s computed value of overlay is none, or el is
6627    //    not rendered, remove el from doc’s top layer and pending top layer removals.
6628    GC::RootVector<GC::Ref<Element>> elements_to_remove(heap());
6629    for (auto& element : m_top_layer_pending_removals) {
6630        // FIXME: Implement overlay property
6631        if (!element->paintable()) {
6632            elements_to_remove.append(element);
6633        }
6634    }
6635
6636    for (auto& element : elements_to_remove) {
6637        m_top_layer_elements.remove(element);
6638        m_top_layer_pending_removals.remove(element);
6639    }
…lines 6640–6657 unchanged (18 lines)
6658    // 3. Return null.
6659    return {};
6660}
6661
6662void Document::set_needs_to_refresh_scroll_state(bool b)
6663{
6664    if (auto* paintable = this->paintable())
6665        paintable->set_needs_to_refresh_scroll_state(b);
6666}
6667
6668Vector<GC::Root<Range>> Document::find_matching_text(String const& query, CaseSensitivity case_sensitivity)
6669{
6670    // Ensure the layout tree exists before searching for text matches.
…lines 6671–7945 unchanged (1275 lines)

After…lines 1–519 unchanged (519 lines)
520
521        auto navigable = this->navigable();
522        if (!navigable || !navigable->is_focused())
523            return;
524
525        auto node = cursor_position->node();
526        if (node->unsafe_paintable()) {
527            m_cursor_blink_state = !m_cursor_blink_state;
528            node->set_needs_display();
529        }
530    });
531
532    HTML::main_thread_event_loop().register_document({}, *this);
533}
534
…lines 535–1159 unchanged (625 lines)
1160    m_needs_full_layout_tree_update = true;
1161}
1162
1163Color Document::background_color() const
1164{
1165    // CSS2 says we should use the HTML element's background color unless it's transparent...
1166    // NB: Called during resolve_paint_properties() inside update_layout().
1167    if (auto* html_element = this->html_element(); html_element && html_element->unsafe_layout_node()) {
1168        auto color = html_element->unsafe_layout_node()->computed_values().background_color();
1169        if (color.alpha())
1170            return color;
1171    }
1172
1173    // ...in which case we use the BODY element's background color.
1174    if (auto* body_element = body(); body_element && body_element->unsafe_layout_node()) {
1175        auto color = body_element->unsafe_layout_node()->computed_values().background_color();
1176        return color;
1177    }
1178
1179    // By default, the document is transparent.
1180    // The outermost canvas is colored by the PageHost.
1181    return Color::Transparent;
1182}
1183
1184Vector<CSS::BackgroundLayerData> const* Document::background_layers() const
1185{
1186    auto* body_element = body();
1187    if (!body_element)
1188        return {};
1189
1190    // NB: Called during resolve_paint_properties() inside update_layout().
1191    auto body_layout_node = body_element->unsafe_layout_node();
1192    if (!body_layout_node)
1193        return {};
1194
1195    return &body_layout_node->background_layers();
1196}
1197
1198CSS::ImageRendering Document::background_image_rendering() const
1199{
1200    auto* body_element = body();
1201    if (!body_element)
1202        return CSS::ImageRendering::Auto;
1203
1204    // NB: Called during resolve_paint_properties() inside update_layout().
1205    auto body_layout_node = body_element->unsafe_layout_node();
1206    if (!body_layout_node)
1207        return CSS::ImageRendering::Auto;
1208
1209    return body_layout_node->computed_values().image_rendering();
1210}
1211
…lines 1212–1395 unchanged (184 lines)
1396
1397static void propagate_scrollbar_width_to_viewport(Element& root_element, Layout::Viewport& viewport)
1398{
1399    // https://drafts.csswg.org/css-scrollbars/#scrollbar-width
1400    // UAs must apply the scrollbar-color value set on the root element to the viewport.
1401    auto& viewport_computed_values = viewport.mutable_computed_values();
1402    // NB: Called during layout tree construction.
1403    auto& root_element_computed_values = root_element.unsafe_layout_node()->computed_values();
1404    viewport_computed_values.set_scrollbar_width(root_element_computed_values.scrollbar_width());
1405}
1406
1407// https://drafts.csswg.org/css-overflow-3/#overflow-propagation
1408static void propagate_overflow_to_viewport(Element& root_element, Layout::Viewport& viewport)
1409{
…lines 1410–1417 unchanged (8 lines)
1418    auto* body_element = root_element.first_child_of_type<HTML::HTMLBodyElement>();
1419    if (body_element && !body_element->computed_properties()->contain().is_empty())
1420        return;
1421
1422    // UAs must apply the overflow-* values set on the root element to the viewport
1423    // when the root element’s display value is not none.
1424    // NB: Called during layout tree construction.
1425    auto overflow_origin_node = root_element.unsafe_layout_node();
1426    auto& viewport_computed_values = viewport.mutable_computed_values();
1427
1428    // However, when the root element is an [HTML] html element (including XML syntax for HTML)
1429    // whose overflow value is visible (in both axes), and that element has as a child
1430    // a body element whose display value is also not none,
1431    // user agents must instead apply the overflow-* values of the first such child element to the viewport.
1432    if (root_element.is_html_html_element()) {
1433        auto root_element_layout_node = root_element.unsafe_layout_node();
1434        auto& root_element_computed_values = root_element_layout_node->mutable_computed_values();
1435        if (root_element_computed_values.overflow_x() == CSS::Overflow::Visible && root_element_computed_values.overflow_y() == CSS::Overflow::Visible) {
1436            auto* body_element = root_element.first_child_of_type<HTML::HTMLBodyElement>();
1437            if (body_element && body_element->unsafe_layout_node())
1438                overflow_origin_node = body_element->unsafe_layout_node();
1439        }
1440    }
1441
1442    // If 'visible' is applied to the viewport, it must be interpreted as 'auto'. If 'clip' is applied to the viewport, it must be interpreted as 'hidden'.
1443    auto& overflow_origin_computed_values = overflow_origin_node->mutable_computed_values();
1444    auto overflow_x_to_apply = overflow_origin_computed_values.overflow_x();
…lines 1445–1464 unchanged (20 lines)
1465void Document::update_layout(UpdateLayoutReason reason)
1466{
1467    auto navigable = this->navigable();
1468    if (!navigable || navigable->active_document() != this)
1469        return;
1470
1471    VERIFY(!m_is_running_update_layout);
1472    ScopeGuard guard = [&] { m_is_running_update_layout = false; };
1473    m_is_running_update_layout = true;
1474
1475    update_style();
1476
1477    if (layout_is_up_to_date())
1478        return;
1479
1480    auto svg_roots_to_relayout = move(m_svg_roots_needing_relayout);
1481
1482    // NOTE: If this is a document hosting <template> contents, layout is unnecessary.
1483    if (m_created_for_appropriate_template_contents)
1484        return;
…lines 1485–1510 unchanged (26 lines)
1511    auto timer = Core::ElapsedTimer::start_new(Core::TimerType::Precise);
1512
1513    if (needs_layout_tree_rebuild) {
1514        Layout::TreeBuilder tree_builder;
1515        m_layout_root = as<Layout::Viewport>(*tree_builder.build(*this));
1516
1517        // NB: Called during layout update.
1518        if (document_element && document_element->unsafe_layout_node()) {
1519            propagate_overflow_to_viewport(*document_element, *m_layout_root);
1520            propagate_scrollbar_width_to_viewport(*document_element, *m_layout_root);
1521        }
1522
1523        set_needs_full_layout_tree_update(false);
1524
1525        if constexpr (UPDATE_LAYOUT_DEBUG) {
1526            dbgln("TREEBUILD {} µs", timer.elapsed_time().to_microseconds());
1527        }
…lines 1528–1566 unchanged (39 lines)
1567
1568        auto& viewport = static_cast<Layout::Viewport&>(*m_layout_root);
1569        auto& viewport_state = layout_state.get_mutable(viewport);
1570        viewport_state.set_content_width(viewport_rect.width());
1571        viewport_state.set_content_height(viewport_rect.height());
1572
1573        // NB: Called during layout update.
1574        if (document_element && document_element->unsafe_layout_node()) {
1575            auto& icb_state = layout_state.get_mutable(as<Layout::NodeWithStyleAndBoxModelMetrics>(*document_element->unsafe_layout_node()));
1576            icb_state.set_content_width(viewport_rect.width());
1577        }
1578
1579        root_formatting_context.run(
1580            Layout::AvailableSpace(
1581                Layout::AvailableSize::make_definite(viewport_rect.width()),
…lines 1582–1585 unchanged (4 lines)
1586
1587    // Broadcast the current viewport rect to any new paintables, so they know whether they're visible or not.
1588    inform_all_viewport_clients_about_the_current_viewport_rect();
1589
1590    m_document->set_needs_display();
1591    set_needs_to_resolve_paint_only_properties();
1592
1593    // NB: Called during layout update.
1594    unsafe_paintable()->assign_scroll_frames();
1595
1596    set_needs_accumulated_visual_contexts_update(true);
1597    update_paint_and_hit_testing_properties_if_needed();
1598
1599    if (auto range = get_selection()->range()) {
1600        unsafe_paintable()->recompute_selection_states(*range);
1601    }
1602
1603    // Collect elements with content-visibility: auto. This is used in the HTML event loop to avoid traversing the whole tree every time.
1604    Vector<GC::Ref<Painting::PaintableBox>> paintable_boxes_with_auto_content_visibility;
1605    unsafe_paintable()->for_each_in_subtree_of_type<Painting::PaintableBox>([&](auto& paintable_box) {
1606        if (paintable_box.dom_node()
1607            && paintable_box.dom_node()->is_element()
1608            && paintable_box.computed_values().content_visibility() == CSS::ContentVisibility::Auto) {
1609            paintable_boxes_with_auto_content_visibility.append(paintable_box);
1610        }
1611        return TraversalDecision::Continue;
1612    });
1613    unsafe_paintable()->set_paintable_boxes_with_auto_content_visibility(move(paintable_boxes_with_auto_content_visibility));
1614
1615    m_layout_root->for_each_in_inclusive_subtree([](auto& node) {
1616        node.reset_needs_layout_update();
1617        return TraversalDecision::Continue;
1618    });
1619
1620    if constexpr (UPDATE_LAYOUT_DEBUG) {
1621        dbgln("LAYOUT {} {} µs", to_string(reason), timer.elapsed_time().to_microseconds());
1622    }
1623
1624    VERIFY(layout_is_up_to_date());
1625}
1626
1627bool Document::layout_is_up_to_date() const
1628{
1629    if (!navigable() || navigable()->active_document() != this)
1630        return true;
1631    if (!m_layout_root)
1632        return false;
1633    return !m_layout_root->needs_layout_update()
1634        && !needs_layout_tree_update()
1635        && !child_needs_layout_tree_update()
1636        && !needs_full_layout_tree_update()
1637        && m_svg_roots_needing_relayout.is_empty();
1638}
1639
1640[[nodiscard]] static CSS::RequiredInvalidationAfterStyleChange update_style_recursively(Node& node, CSS::StyleComputer& style_computer, bool needs_inherited_style_update, bool recompute_elements_depending_on_custom_properties, bool parent_display_changed)
1641{
1642    bool const needs_full_style_update = node.document().needs_full_style_update();
1643    CSS::RequiredInvalidationAfterStyleChange invalidation;
1644
…lines 1645–1672 unchanged (28 lines)
1673                        assigned_node->set_needs_style_update(true);
1674                    });
1675                }
1676            }
1677        }
1678    }
1679    if (node_invalidation.relayout)
1680        node.set_needs_layout_update(SetNeedsLayoutReason::StyleChange);
1681    if (node_invalidation.rebuild_layout_tree) {
1682        // We mark layout tree for rebuild starting from parent element to correctly invalidate
1683        // "display" property change to/from "contents" value.
1684        if (auto parent_element = node.parent_element()) {
1685            parent_element->set_needs_layout_tree_update(true, SetNeedsLayoutTreeUpdateReason::StyleChange);
1686        } else {
…lines 1687–1841 unchanged (155 lines)
1842
1843    m_needs_animated_style_update = false;
1844}
1845
1846void Document::update_paint_and_hit_testing_properties_if_needed()
1847{
1848    // NB: Called during paint property resolution.
1849    if (auto* paintable = this->unsafe_paintable()) {
1850        paintable->refresh_scroll_state();
1851    }
1852
1853    if (m_needs_to_resolve_paint_only_properties) {
1854        m_needs_to_resolve_paint_only_properties = false;
1855        if (auto* paintable = this->unsafe_paintable()) {
1856            paintable->resolve_paint_only_properties();
1857        }
1858    }
1859
1860    if (m_needs_accumulated_visual_contexts_update) {
1861        m_needs_accumulated_visual_contexts_update = false;
1862        if (auto* paintable = this->unsafe_paintable()) {
1863            paintable->assign_accumulated_visual_contexts();
1864        }
1865    }
1866}
1867
1868void Document::set_normal_link_color(Color color)
1869{
1870    m_normal_link_color = color;
…lines 1871–1944 unchanged (74 lines)
1945            // 3. Let color be the result of parsing value.
1946            auto css_value = parse_css_value(context, value, CSS::PropertyID::Color);
1947
1948            // 4. If color is not failure, then return color.
1949            if (!css_value.is_null() && css_value->has_color()) {
1950                CSS::ColorResolutionContext color_resolution_context {};
1951                // NB: Called during theme color computation, layout may be stale.
1952                if (html_element() && html_element()->unsafe_layout_node()) {
1953                    color_resolution_context = CSS::ColorResolutionContext::for_layout_node_with_style(*html_element()->unsafe_layout_node());
1954                }
1955
1956                theme_color = css_value->to_color(color_resolution_context).value();
1957                return TraversalDecision::Break;
1958            }
1959        }
…lines 1960–1971 unchanged (12 lines)
1972
1973Layout::Viewport* Document::layout_node()
1974{
1975    return static_cast<Layout::Viewport*>(Node::layout_node());
1976}
1977
1978Layout::Viewport const* Document::unsafe_layout_node() const
1979{
1980    return static_cast<Layout::Viewport const*>(Node::unsafe_layout_node());
1981}
1982
1983Layout::Viewport* Document::unsafe_layout_node()
1984{
1985    return static_cast<Layout::Viewport*>(Node::unsafe_layout_node());
1986}
1987
1988void Document::set_inspected_node(GC::Ptr<Node> node)
1989{
1990    m_inspected_node = node;
1991}
1992
…lines 1993–2006 unchanged (14 lines)
2007
2008GC::Ptr<Layout::Node> Document::highlighted_layout_node()
2009{
2010    if (!m_highlighted_node)
2011        return nullptr;
2012
2013    // NB: Called during resolve_paint_properties() inside update_layout().
2014    if (!m_highlighted_pseudo_element.has_value() || !m_highlighted_node->is_element())
2015        return m_highlighted_node->unsafe_layout_node();
2016
2017    auto const& element = static_cast<Element const&>(*m_highlighted_node);
2018    return element.get_pseudo_element_node(m_highlighted_pseudo_element.value());
2019}
2020
2021static Node* find_common_ancestor(Node* a, Node* b)
…lines 2022–2785 unchanged (764 lines)
2786
2787    auto* new_focused_element = as_if<Element>(node.ptr());
2788    if (new_focused_element)
2789        new_focused_element->did_receive_focus();
2790
2791    reset_cursor_blink_cycle();
2792
2793    set_needs_display();
2794
2795    // Scroll the viewport if necessary to make the newly focused element visible.
2796    if (new_focused_element) {
2797        new_focused_element->queue_an_element_task(HTML::Task::Source::UserInteraction, [new_focused_element] {
2798            if (new_focused_element->document().focused_area().ptr() != new_focused_element)
2799                return;
…lines 2800–2834 unchanged (35 lines)
2835        }
2836    } else {
2837        invalidate_style_for_elements_affected_by_pseudo_class_change(CSS::PseudoClass::Active, m_active_element, *common_ancestor, element);
2838    }
2839
2840    m_active_element = element;
2841
2842    set_needs_display();
2843}
2844
2845void Document::set_target_element(GC::Ptr<Element> element)
2846{
2847    if (m_target_element.ptr() == element)
2848        return;
…lines 2849–2865 unchanged (17 lines)
2866        }
2867    } else {
2868        invalidate_style_for_elements_affected_by_pseudo_class_change(CSS::PseudoClass::Target, m_target_element, *common_ancestor, element);
2869    }
2870
2871    m_target_element = element;
2872
2873    set_needs_display();
2874}
2875
2876// https://html.spec.whatwg.org/multipage/browsing-the-web.html#the-indicated-part-of-the-document
2877Document::IndicatedPart Document::determine_the_indicated_part() const
2878{
2879    // For an HTML document document, the following processing model must be followed to determine its indicated part:
…lines 2880–4049 unchanged (1170 lines)
4050    },
4051        m_page_showing);
4052}
4053
4054void Document::invalidate_stacking_context_tree()
4055{
4056    // NB: Called during stacking context invalidation.
4057    if (auto* paintable_box = this->unsafe_paintable_box())
4058        paintable_box->invalidate_stacking_context();
4059}
4060
4061void Document::check_favicon_after_loading_link_resource()
4062{
4063    // https://html.spec.whatwg.org/multipage/links.html#rel-icon
…lines 4064–5579 unchanged (1516 lines)
5580
5581Painting::ViewportPaintable* Document::paintable()
5582{
5583    return static_cast<Painting::ViewportPaintable*>(Node::paintable());
5584}
5585
5586Painting::ViewportPaintable const* Document::unsafe_paintable() const
5587{
5588    return static_cast<Painting::ViewportPaintable const*>(Node::unsafe_paintable());
5589}
5590
5591Painting::ViewportPaintable* Document::unsafe_paintable()
5592{
5593    return static_cast<Painting::ViewportPaintable*>(Node::unsafe_paintable());
5594}
5595
5596// https://html.spec.whatwg.org/multipage/browsing-the-web.html#restore-the-history-object-state
5597void Document::restore_the_history_object_state(GC::Ref<HTML::SessionHistoryEntry> entry)
5598{
5599    // 1. Let targetRealm be document's relevant realm.
5600    auto& target_realm = HTML::relevant_realm(*this);
…lines 5601–6669 unchanged (1069 lines)
6670// https://drafts.csswg.org/css-position-4/#process-top-layer-removals
6671void Document::process_top_layer_removals()
6672{
6673    // 1. For each element el in doc’s pending top layer removals: if el’s computed value of overlay is none, or el is
6674    //    not rendered, remove el from doc’s top layer and pending top layer removals.
6675    GC::RootVector<GC::Ref<Element>> elements_to_remove(heap());
6676    // NB: Called during top layer processing.
6677    for (auto& element : m_top_layer_pending_removals) {
6678        // FIXME: Implement overlay property
6679        if (!element->unsafe_paintable()) {
6680            elements_to_remove.append(element);
6681        }
6682    }
6683
6684    for (auto& element : elements_to_remove) {
6685        m_top_layer_elements.remove(element);
6686        m_top_layer_pending_removals.remove(element);
6687    }
…lines 6688–6705 unchanged (18 lines)
6706    // 3. Return null.
6707    return {};
6708}
6709
6710void Document::set_needs_to_refresh_scroll_state(bool b)
6711{
6712    // NB: Propagating scroll state invalidation.
6713    if (auto* paintable = this->unsafe_paintable())
6714        paintable->set_needs_to_refresh_scroll_state(b);
6715}
6716
6717Vector<GC::Root<Range>> Document::find_matching_text(String const& query, CaseSensitivity case_sensitivity)
6718{
6719    // Ensure the layout tree exists before searching for text matches.
…lines 6720–7994 unchanged (1275 lines)

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system_lib_string "<LibWeb/CSS/StyleSheetIdentifier.h>"

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system_lib_string "<LibWeb/DOM/HTMLCollection.h>"

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system_lib_string "<LibWeb/DOM/InputEventsTarget.h>"

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system_lib_string "<LibWeb/HTML/BeforeUnloadEvent.h>"

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system_lib_string "<LibWeb/HTML/CustomElements/CustomElementRegistry.h>"

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system_lib_string "<LibWeb/HTML/HTMLDocument.h>"

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system_lib_string "<LibWeb/HTML/HTMLEmbedElement.h>"

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#include "#include"

system_lib_string "<LibWeb/HTML/HTMLTextAreaElement.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HTML/HTMLTitleElement.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HTML/HashChangeEvent.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HTML/History.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HTML/ListOfAvailableImages.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HTML/Location.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HTML/MessageEvent.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HTML/MessagePort.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HTML/Navigable.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HTML/NavigableContainer.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HTML/Navigation.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HTML/NavigationParams.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HTML/Numbers.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HTML/Parser/HTMLParser.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HTML/PolicyContainers.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HTML/PopStateEvent.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HTML/Scripting/Agent.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HTML/Scripting/ClassicScript.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HTML/Scripting/Environments.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HTML/Scripting/ExceptionReporter.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HTML/Scripting/TemporaryExecutionContext.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HTML/Scripting/WindowEnvironmentSettingsObject.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HTML/SharedResourceRequest.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HTML/Storage.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HTML/StorageEvent.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HTML/StructuredSerialize.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HTML/TraversableNavigable.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HTML/Window.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HTML/WindowProxy.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HighResolutionTime/Performance.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HighResolutionTime/TimeOrigin.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Infra/CharacterTypes.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Infra/Strings.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/IntersectionObserver/IntersectionObserver.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Layout/BlockFormattingContext.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Layout/SVGFormattingContext.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Layout/SVGSVGBox.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Layout/TreeBuilder.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Layout/Viewport.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Namespace.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Page/EventHandler.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Page/Page.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Painting/AccumulatedVisualContext.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Painting/DisplayList.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Painting/DisplayListCommand.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Painting/PaintableBox.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Painting/StackingContext.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Painting/ViewportPaintable.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/PermissionsPolicy/AutoplayAllowlist.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Platform/EventLoopPlugin.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/ResizeObserver/ResizeObserver.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/ResizeObserver/ResizeObserverEntry.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/SVG/SVGDecodedImageData.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/SVG/SVGElement.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/SVG/SVGSVGElement.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/SVG/SVGStyleElement.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/SVG/SVGTitleElement.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Selection/Selection.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/TrustedTypes/RequireTrustedTypesForDirective.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/TrustedTypes/TrustedTypePolicy.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/UIEvents/CompositionEvent.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/UIEvents/EventNames.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/UIEvents/FocusEvent.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/UIEvents/KeyboardEvent.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/UIEvents/MouseEvent.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/UIEvents/PointerEvent.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/UIEvents/PointerTypes.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/UIEvents/TextEvent.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/ViewTransition/ViewTransition.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/WebIDL/AbstractOperations.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/WebIDL/DOMException.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/WebIDL/ExceptionOr.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/WebIDL/ObservableArray.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/XPath/XPath.h>"

namespace_definition

namespace "namespace"

nested_namespace_specifier

namespace_identifier "Web"

:: "::"

namespace_identifier "DOM"

declaration_list

{ "{"

expression_statement

call_expression

identifier "GC_DEFINE_ALLOCATOR"

argument_list

( "("

identifier "Document"

) ")"

; ";"

comment "// https://html.spec.whatwg.org/multipage/origin.html#obtain"...

function_definition (+341 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/browsing-the-web.h"...

function_definition (+1222 nodes collapsed)

comment "// https://dom.spec.whatwg.org/#dom-document-document"

function_definition (+97 nodes collapsed)

function_definition (+61 nodes collapsed)

function_definition (+62 nodes collapsed)

function_definition

function_declarator (+31 nodes collapsed)

field_initializer_list (+218 nodes collapsed)

compound_statement

{ "{"

expression_statement (+27 nodes collapsed)

expression_statement

assignment_expression

identifier "m_cursor_blink_timer"

= "="

call_expression

qualified_identifier

namespace_identifier "Core"

:: "::"

qualified_identifier

namespace_identifier "Timer"

:: "::"

identifier "create_repeating"

argument_list

( "("

number_literal "500"

, ","

lambda_expression

lambda_capture_specifier

[ "["

this "this"

] "]"

compound_statement

{ "{"

declaration

placeholder_type_specifier

auto "auto"

init_declarator

identifier "cursor_position"

= "="

call_expression

field_expression

this "this"

-> "->"

field_identifier "cursor_position"

argument_list

( "("

) ")"

; ";"

if_statement

if "if"

condition_clause

( "("

unary_expression

! "!"

identifier "cursor_position"

) ")"

return_statement

return "return"

; ";"

declaration

placeholder_type_specifier

auto "auto"

init_declarator

identifier "navigable"

= "="

call_expression

field_expression

this "this"

-> "->"

field_identifier "navigable"

argument_list

( "("

) ")"

; ";"

if_statement (+23 nodes collapsed)

declaration

placeholder_type_specifier

auto "auto"

init_declarator

identifier "node"

= "="

call_expression

field_expression

identifier "cursor_position"

-> "->"

field_identifier "node"

argument_list

( "("

) ")"

; ";"

if_statement

if "if"

condition_clause

( "("

call_expression

field_expression

identifier "node"

-> "->"

field_identifier "paintable"

argument_list

( "("

) ")"

compound_statement

{ "{"

expression_statement

assignment_expression

identifier "m_cursor_blink_state"

= "="

unary_expression

! "!"

identifier "m_cursor_blink_state"

; ";"

expression_statement

call_expression any 2:1

field_expression any 2:1

call_expression any 2:1

field_expression any 2:1

identifier "node"

-> "->" any 2:1

field_identifier "paintable"

argument_list

( "("

) ")"

-> "->" any 2:1

field_identifier "set_needs_display"

argument_list

( "("

) ")"

; ";"

} "}"

) ")"

; ";"

expression_statement (+24 nodes collapsed)

} "}"

function_definition

function_declarator

qualified_identifier

namespace_identifier "Document"

:: "::"

destructor_name

~ "~"

identifier "Document"

parameter_list

( "("

) ")"

default_method_clause

= "="

default "default"

; ";"

function_definition (+47 nodes collapsed)

function_definition (+139 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/document-lifecycle"...

function_definition (+187 nodes collapsed)

function_definition (+962 nodes collapsed)

comment "// https://w3c.github.io/selection-api/#dom-document-getsele"...

function_definition (+51 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dynamic-markup-ins"...

function_definition (+61 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dynamic-markup-ins"...

function_definition (+61 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dynamic-markup-ins"...

function_definition (+583 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dynamic-markup-ins"...

function_definition (+550 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dynamic-markup-ins"...

function_definition (+105 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dynamic-markup-ins"...

function_definition (+172 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/nav-history-apis.h"...

function_definition (+60 nodes collapsed)

function_definition (+53 nodes collapsed)

function_definition (+26 nodes collapsed)

function_definition (+29 nodes collapsed)

function_definition (+120 nodes collapsed)

function_definition (+29 nodes collapsed)

function_definition (+33 nodes collapsed)

comment "// https://www.w3.org/TR/SVG2/struct.html#InterfaceDocumentE"...

function_definition (+47 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dom.html#the-html-"...

function_definition (+51 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dom.html#the-head-"...

function_definition (+67 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dom.html#the-title"...

function_definition (+99 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dom.html#dom-docum"...

function_definition (+52 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dom.html#dom-docum"...

function_definition (+49 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dom.html#the-body-"...

function_definition (+150 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dom.html#dom-docum"...

function_definition (+240 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dom.html#document."...

function_definition (+178 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dom.html#document."...

function_definition (+405 nodes collapsed)

function_definition (+33 nodes collapsed)

function_definition

type_identifier "Color"

function_declarator

qualified_identifier

namespace_identifier "Document"

:: "::"

identifier "background_color"

parameter_list

( "("

) ")"

type_qualifier

const "const"

compound_statement

{ "{"

comment "// CSS2 says we should use the HTML element's background col"...

if_statement

if "if"

condition_clause

( "("

init_statement

declaration

placeholder_type_specifier

auto "auto"

init_declarator

pointer_declarator

* "*"

identifier "html_element"

= "="

call_expression

field_expression

this "this"

-> "->"

field_identifier "html_element"

argument_list

( "("

) ")"

; ";"

binary_expression

identifier "html_element"

&& "&&"

call_expression

field_expression

identifier "html_element"

-> "->"

field_identifier "layout_node"

argument_list

( "("

) ")"

compound_statement

{ "{"

declaration

placeholder_type_specifier

auto "auto"

init_declarator

identifier "color"

= "="

call_expression

field_expression

call_expression

field_expression

call_expression

field_expression

identifier "html_element"

-> "->"

field_identifier "layout_node"

argument_list

( "("

) ")"

-> "->"

field_identifier "computed_values"

argument_list

( "("

) ")"

. "."

field_identifier "background_color"

argument_list

( "("

) ")"

; ";"

if_statement

if "if"

condition_clause

( "("

call_expression

field_expression

identifier "color"

. "."

field_identifier "alpha"

argument_list

( "("

) ")"

return_statement

return "return"

identifier "color"

; ";"

} "}"

comment "// ...in which case we use the BODY element's background col"...

if_statement

if "if"

condition_clause

( "("

init_statement

declaration

placeholder_type_specifier

auto "auto"

init_declarator

pointer_declarator

* "*"

identifier "body_element"

= "="

call_expression

identifier "body"

argument_list

( "("

) ")"

; ";"

binary_expression

identifier "body_element"

&& "&&"

call_expression

field_expression

identifier "body_element"

-> "->"

field_identifier "layout_node"

argument_list

( "("

) ")"

compound_statement

{ "{"

declaration

placeholder_type_specifier

auto "auto"

init_declarator

identifier "color"

= "="

call_expression

field_expression

call_expression

field_expression

call_expression

field_expression

identifier "body_element"

-> "->"

field_identifier "layout_node"

argument_list

( "("

) ")"

-> "->"

field_identifier "computed_values"

argument_list

( "("

) ")"

. "."

field_identifier "background_color"

argument_list

( "("

) ")"

; ";"

return_statement

return "return"

identifier "color"

; ";"

} "}"

comment "// By default, the document is transparent."

comment "// The outermost canvas is colored by the PageHost."

return_statement

return "return"

qualified_identifier

namespace_identifier "Color"

:: "::"

identifier "Transparent"

; ";"

} "}"

function_definition

template_type

type_identifier "Vector"

template_argument_list

< "<"

type_descriptor

qualified_identifier

namespace_identifier "CSS"

:: "::"

type_identifier "BackgroundLayerData"

> ">"

type_qualifier

const "const"

pointer_declarator

* "*"

function_declarator

qualified_identifier

namespace_identifier "Document"

:: "::"

identifier "background_layers"

parameter_list

( "("

) ")"

type_qualifier

const "const"

compound_statement

{ "{"

declaration

placeholder_type_specifier

auto "auto"

init_declarator

pointer_declarator

* "*"

identifier "body_element"

= "="

call_expression

identifier "body"

argument_list

( "("

) ")"

; ";"

if_statement

if "if"

condition_clause

( "("

unary_expression

! "!"

identifier "body_element"

) ")"

return_statement

return "return"

initializer_list

{ "{"

} "}"

; ";"

declaration

placeholder_type_specifier

auto "auto"

init_declarator

identifier "body_layout_node"

= "="

call_expression

field_expression

identifier "body_element"

-> "->"

field_identifier "layout_node"

argument_list

( "("

) ")"

; ";"

if_statement

if "if"

condition_clause

( "("

unary_expression

! "!"

identifier "body_layout_node"

) ")"

return_statement

return "return"

initializer_list

{ "{"

} "}"

; ";"

return_statement

return "return"

pointer_expression

& "&"

call_expression

field_expression

identifier "body_layout_node"

-> "->"

field_identifier "background_layers"

argument_list

( "("

) ")"

; ";"

} "}"

function_definition

qualified_identifier

namespace_identifier "CSS"

:: "::"

type_identifier "ImageRendering"

function_declarator

qualified_identifier

namespace_identifier "Document"

:: "::"

identifier "background_image_rendering"

parameter_list

( "("

) ")"

type_qualifier

const "const"

compound_statement

{ "{"

declaration

placeholder_type_specifier

auto "auto"

init_declarator

pointer_declarator

* "*"

identifier "body_element"

= "="

call_expression

identifier "body"

argument_list

( "("

) ")"

; ";"

if_statement

if "if"

condition_clause

( "("

unary_expression

! "!"

identifier "body_element"

) ")"

return_statement

return "return"

qualified_identifier

namespace_identifier "CSS"

:: "::"

qualified_identifier

namespace_identifier "ImageRendering"

:: "::"

identifier "Auto"

; ";"

declaration

placeholder_type_specifier

auto "auto"

init_declarator

identifier "body_layout_node"

= "="

call_expression

field_expression

identifier "body_element"

-> "->"

field_identifier "layout_node"

argument_list

( "("

) ")"

; ";"

if_statement

if "if"

condition_clause

( "("

unary_expression

! "!"

identifier "body_layout_node"

) ")"

return_statement

return "return"

qualified_identifier

namespace_identifier "CSS"

:: "::"

qualified_identifier

namespace_identifier "ImageRendering"

:: "::"

identifier "Auto"

; ";"

return_statement

return "return"

call_expression

field_expression

call_expression

field_expression

identifier "body_layout_node"

-> "->"

field_identifier "computed_values"

argument_list

( "("

) ")"

. "."

field_identifier "image_rendering"

argument_list

( "("

) ")"

; ";"

} "}"

function_definition (+221 nodes collapsed)

function_definition (+31 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/urls-and-fetching."...

function_definition (+34 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/urls-and-fetching."...

function_definition (+62 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/urls-and-fetching."...

function_definition (+105 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/urls-and-fetching."...

function_definition (+59 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/urls-and-fetching."...

function_definition (+76 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/urls-and-fetching."...

function_definition (+72 nodes collapsed)

function_definition (+49 nodes collapsed)

function_definition (+32 nodes collapsed)

function_definition (+443 nodes collapsed)

function_definition

storage_class_specifier

static "static"

primitive_type "void"

function_declarator

identifier "propagate_scrollbar_width_to_viewport"

parameter_list

( "("

parameter_declaration

type_identifier "Element"

reference_declarator

& "&"

identifier "root_element"

, ","

parameter_declaration

qualified_identifier

namespace_identifier "Layout"

:: "::"

type_identifier "Viewport"

reference_declarator

& "&"

identifier "viewport"

) ")"

compound_statement

{ "{"

comment "// https://drafts.csswg.org/css-scrollbars/#scrollbar-width"

comment "// UAs must apply the scrollbar-color value set on the root "...

declaration

placeholder_type_specifier

auto "auto"

init_declarator

reference_declarator

& "&"

identifier "viewport_computed_values"

= "="

call_expression

field_expression

identifier "viewport"

. "."

field_identifier "mutable_computed_values"

argument_list

( "("

) ")"

; ";"

declaration

placeholder_type_specifier

auto "auto"

init_declarator

reference_declarator

& "&"

identifier "root_element_computed_values"

= "="

call_expression

field_expression

call_expression

field_expression

identifier "root_element"

. "."

field_identifier "layout_node"

argument_list

( "("

) ")"

-> "->"

field_identifier "computed_values"

argument_list

( "("

) ")"

; ";"

expression_statement

call_expression

field_expression

identifier "viewport_computed_values"

. "."

field_identifier "set_scrollbar_width"

argument_list

( "("

call_expression

field_expression

identifier "root_element_computed_values"

. "."

field_identifier "scrollbar_width"

argument_list

( "("

) ")"

; ";"

} "}"

comment "// https://drafts.csswg.org/css-overflow-3/#overflow-propaga"...

function_definition

storage_class_specifier

static "static"

primitive_type "void"

function_declarator

identifier "propagate_overflow_to_viewport"

parameter_list

( "("

parameter_declaration

type_identifier "Element"

reference_declarator

& "&"

identifier "root_element"

, ","

parameter_declaration

qualified_identifier

namespace_identifier "Layout"

:: "::"

type_identifier "Viewport"

reference_declarator

& "&"

identifier "viewport"

) ")"

compound_statement

{ "{"

comment "// https://drafts.csswg.org/css-contain-2/#contain-property"

comment "// Additionally, when any containments are active on either "...

comment "// properties from the <body> element to the initial contain"...

comment "// disabled. Notably, this affects:"

comment "// - 'overflow' and its longhands (see CSS Overflow 3 §\u{202f}3.3 "...

if_statement (+42 nodes collapsed)

declaration (+26 nodes collapsed)

if_statement (+35 nodes collapsed)

comment "// UAs must apply the overflow-* values set on the root elem"...

comment "// when the root element’s display value is not none."

declaration

placeholder_type_specifier

auto "auto"

init_declarator

identifier "overflow_origin_node"

= "="

call_expression

field_expression

identifier "root_element"

. "."

field_identifier "layout_node"

argument_list

( "("

) ")"

; ";"

declaration

placeholder_type_specifier

auto "auto"

init_declarator

reference_declarator

& "&"

identifier "viewport_computed_values"

= "="

call_expression

field_expression

identifier "viewport"

. "."

field_identifier "mutable_computed_values"

argument_list

( "("

) ")"

; ";"

comment "// However, when the root element is an [HTML] html element "...

comment "// whose overflow value is visible (in both axes), and that "...

comment "// a body element whose display value is also not none,"

comment "// user agents must instead apply the overflow-* values of t"...

if_statement

if "if"

condition_clause

( "("

call_expression

field_expression

identifier "root_element"

. "."

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( "("

) ")"

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{ "{"

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. "."

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( "("

) ")"

; ";"

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( "("

) ")"

; ";"

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compound_statement

{ "{"

declaration (+26 nodes collapsed)

if_statement

if "if"

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( "("

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-> "->"

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( "("

) ")"

; ";"

} "}"

comment "// If 'visible' is applied to the viewport, it must be inter"...

declaration

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( "("

) ")"

; ";"

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identifier "overflow_x_to_apply"

= "="

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. "."

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( "("

) ")"

; ";"

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auto "auto"

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identifier "overflow_y_to_apply"

= "="

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identifier "overflow_origin_computed_values"

. "."

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( "("

) ")"

; ";"

if_statement (+62 nodes collapsed)

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identifier "viewport_computed_values"

. "."

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( "("

identifier "overflow_x_to_apply"

) ")"

; ";"

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identifier "viewport_computed_values"

. "."

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( "("

identifier "overflow_y_to_apply"

) ")"

; ";"

comment "// The element from which the value is propagated must then "...

comment "// FIXME: Apply this to the used values, not the computed on"...

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identifier "overflow_origin_computed_values"

. "."

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:: "::"

qualified_identifier

namespace_identifier "Overflow"

:: "::"

identifier "Visible"

) ")"

; ";"

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call_expression

field_expression

identifier "overflow_origin_computed_values"

. "."

field_identifier "set_overflow_y"

argument_list

( "("

qualified_identifier

namespace_identifier "CSS"

:: "::"

qualified_identifier

namespace_identifier "Overflow"

:: "::"

identifier "Visible"

) ")"

; ";"

} "}"

function_definition

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function_declarator

qualified_identifier

namespace_identifier "Document"

:: "::"

identifier "update_layout"

parameter_list

( "("

parameter_declaration

type_identifier "UpdateLayoutReason"

identifier "reason"

) ")"

compound_statement

{ "{"

declaration

placeholder_type_specifier

auto "auto"

init_declarator

identifier "navigable"

= "="

call_expression

field_expression

this "this"

-> "->"

field_identifier "navigable"

argument_list

( "("

) ")"

; ";"

if_statement (+24 nodes collapsed)

expression_statement

call_expression

identifier "update_style"

argument_list

( "("

) ")"

; ";"

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placeholder_type_specifier

auto "auto"

init_declarator

identifier "svg_roots_to_relayout"

= "="

call_expression

identifier "move"

argument_list

( "("

identifier "m_svg_roots_needing_relayout"

) ")"

; ";"

if_statement

if "if"

condition_clause

( "("

binary_expression

identifier "m_layout_root"

&& "&&"

unary_expression

! "!"

call_expression

field_expression

identifier "m_layout_root"

-> "->"

field_identifier "needs_layout_update"

argument_list

( "("

) ")"

&& "&&"

call_expression

field_expression

identifier "svg_roots_to_relayout"

. "."

field_identifier "is_empty"

argument_list

( "("

) ")"

return_statement

return "return"

; ";"

comment "// NOTE: If this is a document hosting <template> contents, "...

if_statement

if "if"

condition_clause

( "("

identifier "m_created_for_appropriate_template_contents"

) ")"

return_statement

return "return"

; ";"

declaration (+33 nodes collapsed)

comment "// Partial SVG relayout"

if_statement (+107 nodes collapsed)

comment "// Clear text blocks cache so we rebuild them on the next fi"...

if_statement

if "if"

condition_clause

( "("

identifier "m_layout_root"

) ")"

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field_expression

identifier "m_layout_root"

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field_identifier "invalidate_text_blocks_cache"

argument_list

( "("

) ")"

; ";"

expression_statement

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identifier "invalidate_display_list"

argument_list

( "("

) ")"

; ";"

declaration

placeholder_type_specifier

auto "auto"

init_declarator

pointer_declarator

* "*"

identifier "document_element"

= "="

call_expression

field_expression

this "this"

-> "->"

field_identifier "document_element"

argument_list

( "("

) ")"

; ";"

declaration

placeholder_type_specifier

auto "auto"

init_declarator

identifier "viewport_rect"

= "="

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identifier "navigable"

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field_identifier "viewport_rect"

argument_list

( "("

) ")"

; ";"

declaration (+25 nodes collapsed)

if_statement

if "if"

condition_clause

( "("

identifier "needs_layout_tree_rebuild"

) ")"

compound_statement

{ "{"

declaration

qualified_identifier

namespace_identifier "Layout"

:: "::"

type_identifier "TreeBuilder"

identifier "tree_builder"

; ";"

expression_statement (+32 nodes collapsed)

if_statement

if "if"

condition_clause

( "("

binary_expression

identifier "document_element"

&& "&&"

call_expression

field_expression

identifier "document_element"

-> "->"

field_identifier "layout_node"

argument_list

( "("

) ")"

compound_statement (+31 nodes collapsed)

expression_statement

call_expression

identifier "set_needs_full_layout_tree_update"

argument_list

( "("

false "false"

) ")"

; ";"

if_statement (+37 nodes collapsed)

} "}"

declaration

type_identifier "u32"

init_declarator

identifier "layout_index_counter"

= "="

number_literal "0"

; ";"

expression_statement (+273 nodes collapsed)

declaration

qualified_identifier

namespace_identifier "Layout"

:: "::"

type_identifier "LayoutState"

identifier "layout_state"

; ";"

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call_expression

field_expression

identifier "layout_state"

. "."

field_identifier "ensure_capacity"

argument_list

( "("

identifier "layout_index_counter"

) ")"

; ";"

compound_statement

{ "{"

declaration (+27 nodes collapsed)

declaration (+28 nodes collapsed)

declaration

placeholder_type_specifier

auto "auto"

init_declarator

reference_declarator

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identifier "viewport_state"

= "="

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field_expression

identifier "layout_state"

. "."

field_identifier "get_mutable"

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( "("

identifier "viewport"

) ")"

; ";"

expression_statement

call_expression

field_expression

identifier "viewport_state"

. "."

field_identifier "set_content_width"

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( "("

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field_expression

identifier "viewport_rect"

. "."

field_identifier "width"

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( "("

) ")"

; ";"

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call_expression

field_expression

identifier "viewport_state"

. "."

field_identifier "set_content_height"

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( "("

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field_expression

identifier "viewport_rect"

. "."

field_identifier "height"

argument_list

( "("

) ")"

; ";"

if_statement

if "if"

condition_clause

( "("

binary_expression

identifier "document_element"

&& "&&"

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field_expression

identifier "document_element"

-> "->"

field_identifier "layout_node"

argument_list

( "("

) ")"

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{ "{"

declaration

placeholder_type_specifier

auto "auto"

init_declarator

reference_declarator

& "&"

identifier "icb_state"

= "="

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field_expression

identifier "layout_state"

. "."

field_identifier "get_mutable"

argument_list

( "("

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template_function

identifier "as"

template_argument_list

< "<"

type_descriptor

qualified_identifier

namespace_identifier "Layout"

:: "::"

type_identifier "NodeWithStyleAndBoxModelMetrics"

> ">"

argument_list

( "("

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* "*"

call_expression

field_expression

identifier "document_element"

-> "->"

field_identifier "layout_node"

argument_list

( "("

) ")"

; ";"

expression_statement

call_expression

field_expression

identifier "icb_state"

. "."

field_identifier "set_content_width"

argument_list

( "("

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field_expression

identifier "viewport_rect"

. "."

field_identifier "width"

argument_list

( "("

) ")"

; ";"

} "}"

expression_statement (+57 nodes collapsed)

} "}"

expression_statement

call_expression

field_expression

identifier "layout_state"

. "."

field_identifier "commit"

argument_list

( "("

pointer_expression

* "*"

identifier "m_layout_root"

) ")"

; ";"

comment "// Broadcast the current viewport rect to any new paintables"...

expression_statement

call_expression

identifier "inform_all_viewport_clients_about_the_current_viewport_rect"

argument_list

( "("

) ")"

; ";"

expression_statement

call_expression

field_expression

identifier "m_document"

-> "->"

field_identifier "set_needs_display"

argument_list

( "("

) ")"

; ";"

expression_statement

call_expression

identifier "set_needs_to_resolve_paint_only_properties"

argument_list

( "("

) ")"

; ";"

expression_statement

call_expression

field_expression

call_expression

identifier "paintable"

argument_list

( "("

) ")"

-> "->"

field_identifier "assign_scroll_frames"

argument_list

( "("

) ")"

; ";"

expression_statement

call_expression

identifier "set_needs_accumulated_visual_contexts_update"

argument_list

( "("

true "true"

) ")"

; ";"

expression_statement

call_expression

identifier "update_paint_and_hit_testing_properties_if_needed"

argument_list

( "("

) ")"

; ";"

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if "if"

condition_clause

( "("

declaration

placeholder_type_specifier

auto "auto"

identifier "range"

= "="

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field_expression

call_expression

identifier "get_selection"

argument_list

( "("

) ")"

-> "->"

field_identifier "range"

argument_list

( "("

) ")"

compound_statement

{ "{"

expression_statement

call_expression

field_expression

call_expression

identifier "paintable"

argument_list

( "("

) ")"

-> "->"

field_identifier "recompute_selection_states"

argument_list

( "("

pointer_expression

* "*"

identifier "range"

) ")"

; ";"

} "}"

comment "// Collect elements with content-visibility: auto. This is u"...

declaration (+22 nodes collapsed)

expression_statement

call_expression

field_expression

call_expression

identifier "paintable"

argument_list

( "("

) ")"

-> "->"

template_method

field_identifier "for_each_in_subtree_of_type"

template_argument_list

< "<"

type_descriptor

qualified_identifier

namespace_identifier "Painting"

:: "::"

type_identifier "PaintableBox"

> ">"

argument_list (+99 nodes collapsed)

; ";"

expression_statement

call_expression

field_expression

call_expression

identifier "paintable"

argument_list

( "("

) ")"

-> "->"

field_identifier "set_paintable_boxes_with_auto_content_visibility"

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( "("

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identifier "move"

argument_list

( "("

identifier "paintable_boxes_with_auto_content_visibility"

) ")"

; ";"

expression_statement (+44 nodes collapsed)

if_statement (+44 nodes collapsed)

} "}"

function_definition

attribute_declaration

[[ "[["

attribute

identifier "nodiscard"

]] "]]"

storage_class_specifier

static "static"

qualified_identifier

namespace_identifier "CSS"

:: "::"

type_identifier "RequiredInvalidationAfterStyleChange"

function_declarator (+31 nodes collapsed)

compound_statement

{ "{"

declaration (+23 nodes collapsed)

declaration

qualified_identifier

namespace_identifier "CSS"

:: "::"

type_identifier "RequiredInvalidationAfterStyleChange"

identifier "invalidation"

; ";"

if_statement (+39 nodes collapsed)

comment "// NOTE: If the current node has `display:none`, we can disr"...

comment "// caused by its children, as they will not be rendere"...

comment "// We will still recompute style for the children, tho"...

declaration

primitive_type "bool"

init_declarator

identifier "is_display_none"

= "="

false "false"

; ";"

declaration

primitive_type "bool"

init_declarator

identifier "did_change_custom_properties"

= "="

false "false"

; ";"

declaration

qualified_identifier

namespace_identifier "CSS"

:: "::"

type_identifier "RequiredInvalidationAfterStyleChange"

identifier "node_invalidation"

; ";"

if_statement (+275 nodes collapsed)

if_statement

if "if"

condition_clause

( "("

binary_expression

field_expression

identifier "node_invalidation"

. "."

field_identifier "relayout"

&& "&&"

call_expression

field_expression

identifier "node"

. "."

field_identifier "layout_node"

argument_list

( "("

) ")"

compound_statement

{ "{"

expression_statement

call_expression

field_expression

call_expression

field_expression

identifier "node"

. "."

field_identifier "layout_node"

argument_list

( "("

) ")"

-> "->"

field_identifier "set_needs_layout_update"

argument_list

( "("

qualified_identifier

namespace_identifier "SetNeedsLayoutReason"

:: "::"

identifier "StyleChange"

) ")"

; ";"

} "}"

if_statement (+72 nodes collapsed)

expression_statement

call_expression

field_expression

identifier "node"

. "."

field_identifier "set_needs_style_update"

argument_list

( "("

false "false"

) ")"

; ";"

expression_statement

assignment_expression

identifier "invalidation"

|= "|="

identifier "node_invalidation"

; ";"

if_statement

if "if"

condition_clause

( "("

identifier "did_change_custom_properties"

) ")"

compound_statement

{ "{"

expression_statement

assignment_expression

identifier "recompute_elements_depending_on_custom_properties"

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true "true"

; ";"

} "}"

declaration

primitive_type "bool"

init_declarator

identifier "children_need_inherited_style_update"

= "="

unary_expression

! "!"

call_expression

field_expression

identifier "invalidation"

. "."

field_identifier "is_none"

argument_list

( "("

) ")"

; ";"

comment "// NB: When display changes to/from flex/grid/contents, chil"...

comment "// This requires a full style recompute, not just inheri"...

declaration

primitive_type "bool"

init_declarator

identifier "children_need_full_style_recompute"

= "="

field_expression

identifier "node_invalidation"

. "."

field_identifier "rebuild_layout_tree"

; ";"

if_statement (+256 nodes collapsed)

expression_statement

call_expression

field_expression

identifier "node"

. "."

field_identifier "set_child_needs_style_update"

argument_list

( "("

false "false"

) ")"

; ";"

if_statement (+39 nodes collapsed)

return_statement

return "return"

identifier "invalidation"

; ";"

} "}"

function_definition (+428 nodes collapsed)

function_definition (+38 nodes collapsed)

function_definition (+218 nodes collapsed)

function_definition (+117 nodes collapsed)

function_definition

primitive_type "void"

function_declarator

qualified_identifier

namespace_identifier "Document"

:: "::"

identifier "update_paint_and_hit_testing_properties_if_needed"

parameter_list

( "("

) ")"

compound_statement

{ "{"

if_statement

if "if"

condition_clause

( "("

declaration

placeholder_type_specifier

auto "auto"

pointer_declarator

* "*"

identifier "paintable"

= "="

call_expression

field_expression

this "this"

-> "->"

field_identifier "paintable"

argument_list

( "("

) ")"

compound_statement

{ "{"

expression_statement

call_expression

field_expression

identifier "paintable"

-> "->"

field_identifier "refresh_scroll_state"

argument_list

( "("

) ")"

; ";"

} "}"

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if "if"

condition_clause

( "("

identifier "m_needs_to_resolve_paint_only_properties"

) ")"

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{ "{"

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identifier "m_needs_to_resolve_paint_only_properties"

= "="

false "false"

; ";"

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if "if"

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( "("

declaration

placeholder_type_specifier

auto "auto"

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* "*"

identifier "paintable"

= "="

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field_expression

this "this"

-> "->"

field_identifier "paintable"

argument_list

( "("

) ")"

compound_statement

{ "{"

expression_statement

call_expression

field_expression

identifier "paintable"

-> "->"

field_identifier "resolve_paint_only_properties"

argument_list

( "("

) ")"

; ";"

} "}"

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if "if"

condition_clause

( "("

identifier "m_needs_accumulated_visual_contexts_update"

) ")"

compound_statement

{ "{"

expression_statement

assignment_expression

identifier "m_needs_accumulated_visual_contexts_update"

= "="

false "false"

; ";"

if_statement

if "if"

condition_clause

( "("

declaration

placeholder_type_specifier

auto "auto"

pointer_declarator

* "*"

identifier "paintable"

= "="

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field_expression

this "this"

-> "->"

field_identifier "paintable"

argument_list

( "("

) ")"

compound_statement

{ "{"

expression_statement

call_expression

field_expression

identifier "paintable"

-> "->"

field_identifier "assign_accumulated_visual_contexts"

argument_list

( "("

) ")"

; ";"

} "}"

function_definition (+22 nodes collapsed)

function_definition (+35 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/semantics.html#met"...

function_definition (+259 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/semantics.html#met"...

function_definition

primitive_type "void"

function_declarator

qualified_identifier

namespace_identifier "Document"

:: "::"

identifier "obtain_theme_color"

parameter_list

( "("

) ")"

compound_statement

{ "{"

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type_identifier "Color"

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identifier "theme_color"

= "="

qualified_identifier

namespace_identifier "Color"

:: "::"

identifier "Transparent"

; ";"

comment "// 1. Let candidate elements be the list of all meta element"...

expression_statement

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identifier "for_each_in_subtree_of_type"

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< "<"

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namespace_identifier "HTML"

:: "::"

type_identifier "HTMLMetaElement"

> ">"

argument_list

( "("

lambda_expression

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[ "["

lambda_default_capture

& "&"

] "]"

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( "("

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:: "::"

type_identifier "HTMLMetaElement"

reference_declarator

& "&"

identifier "element"

) ")"

compound_statement

{ "{"

comment "// * the element is in a document tree;"

comment "// * the element has a name attribute, whose value is an"...

comment "// * the element has a content attribute."

comment "// 2. For each element in candidate elements:"

declaration (+22 nodes collapsed)

if_statement

if "if"

condition_clause (+51 nodes collapsed)

compound_statement

{ "{"

comment "// 1. If element has a media attribute and the value of elem"...

declaration (+23 nodes collapsed)

declaration (+22 nodes collapsed)

if_statement (+73 nodes collapsed)

comment "// 2. Let value be the result of stripping leading and trail"...

declaration (+26 nodes collapsed)

comment "// 3. Let color be the result of parsing value."

declaration (+23 nodes collapsed)

comment "// 4. If color is not failure, then return color."

if_statement

if "if"

condition_clause (+23 nodes collapsed)

compound_statement

{ "{"

declaration

qualified_identifier

namespace_identifier "CSS"

:: "::"

type_identifier "ColorResolutionContext"

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identifier "color_resolution_context"

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{ "{"

} "}"

; ";"

if_statement

if "if"

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( "("

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identifier "html_element"

argument_list

( "("

) ")"

&& "&&"

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call_expression

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argument_list

( "("

) ")"

-> "->"

field_identifier "layout_node"

argument_list

( "("

) ")"

compound_statement

{ "{"

expression_statement

assignment_expression

identifier "color_resolution_context"

= "="

call_expression

qualified_identifier

namespace_identifier "CSS"

:: "::"

qualified_identifier

namespace_identifier "ColorResolutionContext"

:: "::"

identifier "for_layout_node_with_style"

argument_list

( "("

pointer_expression

* "*"

call_expression

field_expression

call_expression

identifier "html_element"

argument_list

( "("

) ")"

-> "->"

field_identifier "layout_node"

argument_list

( "("

) ")"

; ";"

} "}"

expression_statement (+21 nodes collapsed)

return_statement

return "return"

qualified_identifier

namespace_identifier "TraversalDecision"

:: "::"

identifier "Break"

; ";"

} "}"

return_statement

return "return"

qualified_identifier

namespace_identifier "TraversalDecision"

:: "::"

identifier "Continue"

; ";"

} "}"

) ")"

; ";"

comment "// 3. Return nothing(the page has no theme color)."

expression_statement (+29 nodes collapsed)

} "}"

function_definition (+51 nodes collapsed)

function_definition (+45 nodes collapsed)

function_definition (+31 nodes collapsed)

function_definition (+160 nodes collapsed)

function_definition

qualified_identifier

namespace_identifier "GC"

:: "::"

template_type

type_identifier "Ptr"

template_argument_list

< "<"

type_descriptor

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namespace_identifier "Layout"

:: "::"

type_identifier "Node"

> ">"

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qualified_identifier

namespace_identifier "Document"

:: "::"

identifier "highlighted_layout_node"

parameter_list

( "("

) ")"

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{ "{"

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condition_clause

( "("

unary_expression

! "!"

identifier "m_highlighted_node"

) ")"

return_statement

return "return"

null

nullptr "nullptr"

; ";"

if_statement

if "if"

condition_clause (+25 nodes collapsed)

return_statement

return "return"

call_expression

field_expression

identifier "m_highlighted_node"

-> "->"

field_identifier "layout_node"

argument_list

( "("

) ")"

; ";"

declaration (+29 nodes collapsed)

return_statement

return "return"

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comment "// https://html.spec.whatwg.org/multipage/browsing-the-web.h"...

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comment "// https://drafts.csswg.org/css-transitions-2/#event-dispatc"...

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comment "// https://www.w3.org/TR/css-animations-2/#event-dispatch"

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comment "// https://html.spec.whatwg.org/multipage/dom.html#update-th"...

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comment "// https://html.spec.whatwg.org/multipage/dom.html#dom-docum"...

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comment "// https://html.spec.whatwg.org/multipage/document-lifecycle"...

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comment "// https://html.spec.whatwg.org/multipage/dom.html#dom-docum"...

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comment "// https://html.spec.whatwg.org/multipage/dom.html#cookie-av"...

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comment "// https://html.spec.whatwg.org/multipage/semantics.html#has"...

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comment "// https://drafts.csswg.org/cssom-view/#run-the-resize-steps"

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function_definition (+41 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/semantics.html#sha"...

function_definition (+1138 nodes collapsed)

function_definition (+51 nodes collapsed)

function_definition (+45 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/browsing-the-web.h"...

function_definition (+136 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/browsing-the-web.h"...

function_definition (+723 nodes collapsed)

function_definition (+43 nodes collapsed)

comment "// https://www.w3.org/TR/web-animations-1/#dom-document-time"...

function_definition (+68 nodes collapsed)

function_definition (+39 nodes collapsed)

function_definition (+40 nodes collapsed)

comment "// https://www.w3.org/TR/web-animations-1/#update-animations"...

function_definition (+690 nodes collapsed)

comment "// https://www.w3.org/TR/web-animations-1/#remove-replaced-a"...

function_definition (+948 nodes collapsed)

function_definition (+58 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dom.html#dom-docum"...

function_definition (+108 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dom.html#dom-docum"...

function_definition (+57 nodes collapsed)

function_definition (+170 nodes collapsed)

function_definition (+269 nodes collapsed)

function_definition (+146 nodes collapsed)

function_definition (+176 nodes collapsed)

function_definition (+149 nodes collapsed)

function_definition (+61 nodes collapsed)

function_definition (+125 nodes collapsed)

function_definition (+34 nodes collapsed)

function_definition (+59 nodes collapsed)

function_definition (+70 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/interaction.html#m"...

function_definition (+39 nodes collapsed)

function_definition (+200 nodes collapsed)

function_definition (+87 nodes collapsed)

comment "// https://drafts.csswg.org/cssom-view/#dom-document-element"...

function_definition (+315 nodes collapsed)

comment "// https://drafts.csswg.org/cssom-view/#dom-document-element"...

function_definition (+409 nodes collapsed)

comment "// https://drafts.csswg.org/cssom-view/#dom-document-scrolli"...

function_definition (+128 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dom.html#exposed"

function_definition (+64 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dom.html#dom-tree-"...

function_definition (+415 nodes collapsed)

function_definition (+281 nodes collapsed)

function_definition (+118 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dom.html#dom-docum"...

function_definition (+255 nodes collapsed)

comment "// https://drafts.csswg.org/resize-observer-1/#calculate-dep"...

function_definition (+68 nodes collapsed)

comment "// https://drafts.csswg.org/resize-observer-1/#gather-active"...

function_definition (+184 nodes collapsed)

comment "// https://drafts.csswg.org/resize-observer-1/#broadcast-act"...

function_definition (+456 nodes collapsed)

comment "// https://drafts.csswg.org/resize-observer-1/#has-active-ob"...

function_definition (+60 nodes collapsed)

comment "// https://drafts.csswg.org/resize-observer-1/#has-skipped-o"...

function_definition (+60 nodes collapsed)

function_definition (+67 nodes collapsed)

function_definition (+179 nodes collapsed)

function_definition (+196 nodes collapsed)

function_definition (+64 nodes collapsed)

function_definition (+144 nodes collapsed)

function_definition (+602 nodes collapsed)

function_definition (+44 nodes collapsed)

function_definition (+37 nodes collapsed)

comment "// https://drafts.csswg.org/css-position-4/#add-an-element-t"...

function_definition (+141 nodes collapsed)

comment "// https://drafts.csswg.org/css-position-4/#request-an-eleme"...

function_definition (+114 nodes collapsed)

comment "// https://drafts.csswg.org/css-position-4/#remove-an-elemen"...

function_definition (+83 nodes collapsed)

comment "// https://drafts.csswg.org/css-position-4/#process-top-laye"...

function_definition

primitive_type "void"

function_declarator

qualified_identifier

namespace_identifier "Document"

:: "::"

identifier "process_top_layer_removals"

parameter_list

( "("

) ")"

compound_statement

{ "{"

comment "// 1. For each element el in doc’s pending top layer removal"...

comment "// not rendered, remove el from doc’s top layer and pendi"...

declaration (+32 nodes collapsed)

for_range_loop

for "for"

( "("

placeholder_type_specifier

auto "auto"

reference_declarator

& "&"

identifier "element"

: ":"

identifier "m_top_layer_pending_removals"

) ")"

compound_statement

{ "{"

comment "// FIXME: Implement overlay property"

if_statement

if "if"

condition_clause

( "("

unary_expression

! "!"

call_expression

field_expression

identifier "element"

-> "->"

field_identifier "paintable"

argument_list

( "("

) ")"

compound_statement

{ "{"

expression_statement

call_expression

field_expression

identifier "elements_to_remove"

. "."

field_identifier "append"

argument_list

( "("

identifier "element"

) ")"

; ";"

} "}"

for_range_loop (+36 nodes collapsed)

if_statement (+26 nodes collapsed)

} "}"

comment "// https://html.spec.whatwg.org/multipage/popover.html#topmo"...

function_definition (+87 nodes collapsed)

function_definition

primitive_type "void"

function_declarator

qualified_identifier

namespace_identifier "Document"

:: "::"

identifier "set_needs_to_refresh_scroll_state"

parameter_list

( "("

parameter_declaration

primitive_type "bool"

identifier "b"

) ")"

compound_statement

{ "{"

if_statement

if "if"

condition_clause

( "("

declaration

placeholder_type_specifier

auto "auto"

pointer_declarator

* "*"

identifier "paintable"

= "="

call_expression

field_expression

this "this"

-> "->"

field_identifier "paintable"

argument_list

( "("

) ")"

expression_statement

call_expression

field_expression

identifier "paintable"

-> "->"

field_identifier "set_needs_to_refresh_scroll_state"

argument_list

( "("

identifier "b"

) ")"

; ";"

} "}"

function_definition (+599 nodes collapsed)

comment "// https://dom.spec.whatwg.org/#document-allow-declarative-s"...

function_definition

primitive_type "bool"

function_declarator

qualified_identifier

namespace_identifier "Document"

:: "::"

identifier "allow_declarative_shadow_roots"

parameter_list

( "("

) ")"

type_qualifier

const "const"

compound_statement

{ "{"

return_statement

return "return"

identifier "m_allow_declarative_shadow_roots"

; ";"

} "}"

function_definition (+39 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dom.html#render-bl"...

function_definition (+108 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dom.html#allows-ad"...

function_definition (+39 nodes collapsed)

function_definition (+36 nodes collapsed)

comment "// https://fullscreen.spec.whatwg.org/#run-the-fullscreen-st"...

function_definition (+282 nodes collapsed)

function_definition (+50 nodes collapsed)

comment "// https://fullscreen.spec.whatwg.org/#fullscreen-an-element"

function_definition (+270 nodes collapsed)

comment "// https://fullscreen.spec.whatwg.org/#fullscreen-element"

function_definition (+75 nodes collapsed)

comment "// https://fullscreen.spec.whatwg.org/#dom-document-fullscre"...

function_definition (+182 nodes collapsed)

comment "// https://fullscreen.spec.whatwg.org/#dom-document-fullscre"...

function_definition (+28 nodes collapsed)

comment "// https://fullscreen.spec.whatwg.org/#dom-document-fullscre"...

function_definition (+28 nodes collapsed)

comment "// https://fullscreen.spec.whatwg.org/#fully-exit-fullscreen"

function_definition (+198 nodes collapsed)

comment "// https://fullscreen.spec.whatwg.org/#exit-fullscreen"

function_definition (+791 nodes collapsed)

comment "// https://fullscreen.spec.whatwg.org/#unfullscreen-a-docume"...

function_definition (+129 nodes collapsed)

comment "// https://fullscreen.spec.whatwg.org/#simple-fullscreen-doc"...

function_definition (+81 nodes collapsed)

comment "// https://fullscreen.spec.whatwg.org/#collect-documents-to-"...

function_definition (+303 nodes collapsed)

comment "// https://fullscreen.spec.whatwg.org/#unfullscreen-an-eleme"...

function_definition (+90 nodes collapsed)

comment "// https://dom.spec.whatwg.org/#document-allow-declarative-s"...

function_definition (+22 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dynamic-markup-ins"...

function_definition (+117 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dynamic-markup-ins"...

function_definition (+261 nodes collapsed)

function_definition (+179 nodes collapsed)

function_definition (+238 nodes collapsed)

function_definition (+48 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/document-sequences"...

function_definition (+65 nodes collapsed)

function_definition (+36 nodes collapsed)

function_definition (+41 nodes collapsed)

function_definition (+30 nodes collapsed)

function_definition (+188 nodes collapsed)

function_definition (+87 nodes collapsed)

function_definition (+28 nodes collapsed)

function_definition (+673 nodes collapsed)

function_definition (+57 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/browsing-the-web.h"...

function_definition (+294 nodes collapsed)

comment "// https://w3c.github.io/webappsec-csp/#run-document-csp-ini"...

function_definition (+114 nodes collapsed)

function_definition (+33 nodes collapsed)

function_definition (+37 nodes collapsed)

function_definition (+33 nodes collapsed)

function_definition (+37 nodes collapsed)

function_definition (+33 nodes collapsed)

function_definition (+37 nodes collapsed)

function_definition (+33 nodes collapsed)

function_definition (+37 nodes collapsed)

comment "// https://drafts.csswg.org/css-view-transitions-1/#dom-docu"...

function_definition (+250 nodes collapsed)

comment "// https://drafts.csswg.org/css-view-transitions-1/#perform-"...

function_definition (+100 nodes collapsed)

comment "// https://drafts.csswg.org/css-view-transitions-1/#flush-th"...

function_definition (+50 nodes collapsed)

comment "// https://drafts.csswg.org/css-view-transitions-1/#view-tra"...

function_definition (+179 nodes collapsed)

function_definition (+47 nodes collapsed)

function_definition (+1143 nodes collapsed)

function_definition (+125 nodes collapsed)

function_definition (+434 nodes collapsed)

function_definition (+31 nodes collapsed)

function_definition (+90 nodes collapsed)

function_definition (+130 nodes collapsed)

function_definition (+44 nodes collapsed)

comment "// https://drafts.css-houdini.org/css-properties-values-api/"...

function_definition (+114 nodes collapsed)

function_definition (+110 nodes collapsed)

function_definition (+145 nodes collapsed)

function_definition (+155 nodes collapsed)

function_definition (+892 nodes collapsed)

function_definition (+48 nodes collapsed)

function_definition (+51 nodes collapsed)

function_definition (+24 nodes collapsed)

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preproc_include

#include "#include"

system_lib_string "<LibWeb/HTML/StorageEvent.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HTML/StructuredSerialize.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HTML/TraversableNavigable.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HTML/Window.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HTML/WindowProxy.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HighResolutionTime/Performance.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/HighResolutionTime/TimeOrigin.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Infra/CharacterTypes.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Infra/Strings.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/IntersectionObserver/IntersectionObserver.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Layout/BlockFormattingContext.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Layout/SVGFormattingContext.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Layout/SVGSVGBox.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Layout/TreeBuilder.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Layout/Viewport.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Namespace.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Page/EventHandler.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Page/Page.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Painting/AccumulatedVisualContext.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Painting/DisplayList.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Painting/DisplayListCommand.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Painting/PaintableBox.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Painting/StackingContext.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Painting/ViewportPaintable.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/PermissionsPolicy/AutoplayAllowlist.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Platform/EventLoopPlugin.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/ResizeObserver/ResizeObserver.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/ResizeObserver/ResizeObserverEntry.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/SVG/SVGDecodedImageData.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/SVG/SVGElement.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/SVG/SVGSVGElement.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/SVG/SVGStyleElement.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/SVG/SVGTitleElement.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/Selection/Selection.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/TrustedTypes/RequireTrustedTypesForDirective.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/TrustedTypes/TrustedTypePolicy.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/UIEvents/CompositionEvent.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/UIEvents/EventNames.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/UIEvents/FocusEvent.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/UIEvents/KeyboardEvent.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/UIEvents/MouseEvent.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/UIEvents/PointerEvent.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/UIEvents/PointerTypes.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/UIEvents/TextEvent.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/ViewTransition/ViewTransition.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/WebIDL/AbstractOperations.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/WebIDL/DOMException.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/WebIDL/ExceptionOr.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/WebIDL/ObservableArray.h>"

preproc_include

#include "#include"

system_lib_string "<LibWeb/XPath/XPath.h>"

namespace_definition

namespace "namespace"

nested_namespace_specifier

namespace_identifier "Web"

:: "::"

namespace_identifier "DOM"

declaration_list

{ "{"

expression_statement

call_expression

identifier "GC_DEFINE_ALLOCATOR"

argument_list

( "("

identifier "Document"

) ")"

; ";"

comment "// https://html.spec.whatwg.org/multipage/origin.html#obtain"...

function_definition (+341 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/browsing-the-web.h"...

function_definition (+1222 nodes collapsed)

comment "// https://dom.spec.whatwg.org/#dom-document-document"

function_definition (+97 nodes collapsed)

function_definition (+61 nodes collapsed)

function_definition (+62 nodes collapsed)

function_definition

function_declarator (+31 nodes collapsed)

field_initializer_list (+218 nodes collapsed)

compound_statement

{ "{"

expression_statement (+27 nodes collapsed)

expression_statement

assignment_expression

identifier "m_cursor_blink_timer"

= "="

call_expression

qualified_identifier

namespace_identifier "Core"

:: "::"

qualified_identifier

namespace_identifier "Timer"

:: "::"

identifier "create_repeating"

argument_list

( "("

number_literal "500"

, ","

lambda_expression

lambda_capture_specifier

[ "["

this "this"

] "]"

compound_statement

{ "{"

declaration

placeholder_type_specifier

auto "auto"

init_declarator

identifier "cursor_position"

= "="

call_expression

field_expression

this "this"

-> "->"

field_identifier "cursor_position"

argument_list

( "("

) ")"

; ";"

if_statement

if "if"

condition_clause

( "("

unary_expression

! "!"

identifier "cursor_position"

) ")"

return_statement

return "return"

; ";"

declaration

placeholder_type_specifier

auto "auto"

init_declarator

identifier "navigable"

= "="

call_expression

field_expression

this "this"

-> "->"

field_identifier "navigable"

argument_list

( "("

) ")"

; ";"

if_statement (+23 nodes collapsed)

declaration

placeholder_type_specifier

auto "auto"

init_declarator

identifier "node"

= "="

call_expression

field_expression

identifier "cursor_position"

-> "->"

field_identifier "node"

argument_list

( "("

) ")"

; ";"

if_statement

if "if"

condition_clause

( "("

call_expression

field_expression

identifier "node"

-> "->"

field_identifier "unsafe_paintable"

argument_list

( "("

) ")"

compound_statement

{ "{"

expression_statement

assignment_expression

identifier "m_cursor_blink_state"

= "="

unary_expression

! "!"

identifier "m_cursor_blink_state"

; ";"

expression_statement

call_expression any 2:1

field_expression any 2:1

identifier "node"

-> "->" any 2:1

field_identifier "set_needs_display"

argument_list

( "("

) ")"

; ";"

} "}"

) ")"

; ";"

expression_statement (+24 nodes collapsed)

} "}"

function_definition

function_declarator

qualified_identifier

namespace_identifier "Document"

:: "::"

destructor_name

~ "~"

identifier "Document"

parameter_list

( "("

) ")"

default_method_clause

= "="

default "default"

; ";"

function_definition (+47 nodes collapsed)

function_definition (+139 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/document-lifecycle"...

function_definition (+187 nodes collapsed)

function_definition (+962 nodes collapsed)

comment "// https://w3c.github.io/selection-api/#dom-document-getsele"...

function_definition (+51 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dynamic-markup-ins"...

function_definition (+61 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dynamic-markup-ins"...

function_definition (+61 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dynamic-markup-ins"...

function_definition (+583 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dynamic-markup-ins"...

function_definition (+550 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dynamic-markup-ins"...

function_definition (+105 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dynamic-markup-ins"...

function_definition (+172 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/nav-history-apis.h"...

function_definition (+60 nodes collapsed)

function_definition (+53 nodes collapsed)

function_definition (+26 nodes collapsed)

function_definition (+29 nodes collapsed)

function_definition (+120 nodes collapsed)

function_definition (+29 nodes collapsed)

function_definition (+33 nodes collapsed)

comment "// https://www.w3.org/TR/SVG2/struct.html#InterfaceDocumentE"...

function_definition (+47 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dom.html#the-html-"...

function_definition (+51 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dom.html#the-head-"...

function_definition (+67 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dom.html#the-title"...

function_definition (+99 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dom.html#dom-docum"...

function_definition (+52 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dom.html#dom-docum"...

function_definition (+49 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dom.html#the-body-"...

function_definition (+150 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dom.html#dom-docum"...

function_definition (+240 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dom.html#document."...

function_definition (+178 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dom.html#document."...

function_definition (+405 nodes collapsed)

function_definition (+33 nodes collapsed)

function_definition

type_identifier "Color"

function_declarator

qualified_identifier

namespace_identifier "Document"

:: "::"

identifier "background_color"

parameter_list

( "("

) ")"

type_qualifier

const "const"

compound_statement

{ "{"

comment "// CSS2 says we should use the HTML element's background col"...

comment "// NB: Called during resolve_paint_properties() inside updat"...

if_statement

if "if"

condition_clause

( "("

init_statement

declaration

placeholder_type_specifier

auto "auto"

init_declarator

pointer_declarator

* "*"

identifier "html_element"

= "="

call_expression

field_expression

this "this"

-> "->"

field_identifier "html_element"

argument_list

( "("

) ")"

; ";"

binary_expression

identifier "html_element"

&& "&&"

call_expression

field_expression

identifier "html_element"

-> "->"

field_identifier "unsafe_layout_node"

argument_list

( "("

) ")"

compound_statement

{ "{"

declaration

placeholder_type_specifier

auto "auto"

init_declarator

identifier "color"

= "="

call_expression

field_expression

call_expression

field_expression

call_expression

field_expression

identifier "html_element"

-> "->"

field_identifier "unsafe_layout_node"

argument_list

( "("

) ")"

-> "->"

field_identifier "computed_values"

argument_list

( "("

) ")"

. "."

field_identifier "background_color"

argument_list

( "("

) ")"

; ";"

if_statement

if "if"

condition_clause

( "("

call_expression

field_expression

identifier "color"

. "."

field_identifier "alpha"

argument_list

( "("

) ")"

return_statement

return "return"

identifier "color"

; ";"

} "}"

comment "// ...in which case we use the BODY element's background col"...

if_statement

if "if"

condition_clause

( "("

init_statement

declaration

placeholder_type_specifier

auto "auto"

init_declarator

pointer_declarator

* "*"

identifier "body_element"

= "="

call_expression

identifier "body"

argument_list

( "("

) ")"

; ";"

binary_expression

identifier "body_element"

&& "&&"

call_expression

field_expression

identifier "body_element"

-> "->"

field_identifier "unsafe_layout_node"

argument_list

( "("

) ")"

compound_statement

{ "{"

declaration

placeholder_type_specifier

auto "auto"

init_declarator

identifier "color"

= "="

call_expression

field_expression

call_expression

field_expression

call_expression

field_expression

identifier "body_element"

-> "->"

field_identifier "unsafe_layout_node"

argument_list

( "("

) ")"

-> "->"

field_identifier "computed_values"

argument_list

( "("

) ")"

. "."

field_identifier "background_color"

argument_list

( "("

) ")"

; ";"

return_statement

return "return"

identifier "color"

; ";"

} "}"

comment "// By default, the document is transparent."

comment "// The outermost canvas is colored by the PageHost."

return_statement

return "return"

qualified_identifier

namespace_identifier "Color"

:: "::"

identifier "Transparent"

; ";"

} "}"

function_definition

template_type

type_identifier "Vector"

template_argument_list

< "<"

type_descriptor

qualified_identifier

namespace_identifier "CSS"

:: "::"

type_identifier "BackgroundLayerData"

> ">"

type_qualifier

const "const"

pointer_declarator

* "*"

function_declarator

qualified_identifier

namespace_identifier "Document"

:: "::"

identifier "background_layers"

parameter_list

( "("

) ")"

type_qualifier

const "const"

compound_statement

{ "{"

declaration

placeholder_type_specifier

auto "auto"

init_declarator

pointer_declarator

* "*"

identifier "body_element"

= "="

call_expression

identifier "body"

argument_list

( "("

) ")"

; ";"

if_statement

if "if"

condition_clause

( "("

unary_expression

! "!"

identifier "body_element"

) ")"

return_statement

return "return"

initializer_list

{ "{"

} "}"

; ";"

comment "// NB: Called during resolve_paint_properties() inside updat"...

declaration

placeholder_type_specifier

auto "auto"

init_declarator

identifier "body_layout_node"

= "="

call_expression

field_expression

identifier "body_element"

-> "->"

field_identifier "unsafe_layout_node"

argument_list

( "("

) ")"

; ";"

if_statement

if "if"

condition_clause

( "("

unary_expression

! "!"

identifier "body_layout_node"

) ")"

return_statement

return "return"

initializer_list

{ "{"

} "}"

; ";"

return_statement

return "return"

pointer_expression

& "&"

call_expression

field_expression

identifier "body_layout_node"

-> "->"

field_identifier "background_layers"

argument_list

( "("

) ")"

; ";"

} "}"

function_definition

qualified_identifier

namespace_identifier "CSS"

:: "::"

type_identifier "ImageRendering"

function_declarator

qualified_identifier

namespace_identifier "Document"

:: "::"

identifier "background_image_rendering"

parameter_list

( "("

) ")"

type_qualifier

const "const"

compound_statement

{ "{"

declaration

placeholder_type_specifier

auto "auto"

init_declarator

pointer_declarator

* "*"

identifier "body_element"

= "="

call_expression

identifier "body"

argument_list

( "("

) ")"

; ";"

if_statement

if "if"

condition_clause

( "("

unary_expression

! "!"

identifier "body_element"

) ")"

return_statement

return "return"

qualified_identifier

namespace_identifier "CSS"

:: "::"

qualified_identifier

namespace_identifier "ImageRendering"

:: "::"

identifier "Auto"

; ";"

comment "// NB: Called during resolve_paint_properties() inside updat"...

declaration

placeholder_type_specifier

auto "auto"

init_declarator

identifier "body_layout_node"

= "="

call_expression

field_expression

identifier "body_element"

-> "->"

field_identifier "unsafe_layout_node"

argument_list

( "("

) ")"

; ";"

if_statement

if "if"

condition_clause

( "("

unary_expression

! "!"

identifier "body_layout_node"

) ")"

return_statement

return "return"

qualified_identifier

namespace_identifier "CSS"

:: "::"

qualified_identifier

namespace_identifier "ImageRendering"

:: "::"

identifier "Auto"

; ";"

return_statement

return "return"

call_expression

field_expression

call_expression

field_expression

identifier "body_layout_node"

-> "->"

field_identifier "computed_values"

argument_list

( "("

) ")"

. "."

field_identifier "image_rendering"

argument_list

( "("

) ")"

; ";"

} "}"

function_definition (+221 nodes collapsed)

function_definition (+31 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/urls-and-fetching."...

function_definition (+34 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/urls-and-fetching."...

function_definition (+62 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/urls-and-fetching."...

function_definition (+105 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/urls-and-fetching."...

function_definition (+59 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/urls-and-fetching."...

function_definition (+76 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/urls-and-fetching."...

function_definition (+72 nodes collapsed)

function_definition (+49 nodes collapsed)

function_definition (+32 nodes collapsed)

function_definition (+443 nodes collapsed)

function_definition

storage_class_specifier

static "static"

primitive_type "void"

function_declarator

identifier "propagate_scrollbar_width_to_viewport"

parameter_list

( "("

parameter_declaration

type_identifier "Element"

reference_declarator

& "&"

identifier "root_element"

, ","

parameter_declaration

qualified_identifier

namespace_identifier "Layout"

:: "::"

type_identifier "Viewport"

reference_declarator

& "&"

identifier "viewport"

) ")"

compound_statement

{ "{"

comment "// https://drafts.csswg.org/css-scrollbars/#scrollbar-width"

comment "// UAs must apply the scrollbar-color value set on the root "...

declaration

placeholder_type_specifier

auto "auto"

init_declarator

reference_declarator

& "&"

identifier "viewport_computed_values"

= "="

call_expression

field_expression

identifier "viewport"

. "."

field_identifier "mutable_computed_values"

argument_list

( "("

) ")"

; ";"

comment "// NB: Called during layout tree construction."

declaration

placeholder_type_specifier

auto "auto"

init_declarator

reference_declarator

& "&"

identifier "root_element_computed_values"

= "="

call_expression

field_expression

call_expression

field_expression

identifier "root_element"

. "."

field_identifier "unsafe_layout_node"

argument_list

( "("

) ")"

-> "->"

field_identifier "computed_values"

argument_list

( "("

) ")"

; ";"

expression_statement

call_expression

field_expression

identifier "viewport_computed_values"

. "."

field_identifier "set_scrollbar_width"

argument_list

( "("

call_expression

field_expression

identifier "root_element_computed_values"

. "."

field_identifier "scrollbar_width"

argument_list

( "("

) ")"

; ";"

} "}"

comment "// https://drafts.csswg.org/css-overflow-3/#overflow-propaga"...

function_definition

storage_class_specifier

static "static"

primitive_type "void"

function_declarator

identifier "propagate_overflow_to_viewport"

parameter_list

( "("

parameter_declaration

type_identifier "Element"

reference_declarator

& "&"

identifier "root_element"

, ","

parameter_declaration

qualified_identifier

namespace_identifier "Layout"

:: "::"

type_identifier "Viewport"

reference_declarator

& "&"

identifier "viewport"

) ")"

compound_statement

{ "{"

comment "// https://drafts.csswg.org/css-contain-2/#contain-property"

comment "// Additionally, when any containments are active on either "...

comment "// properties from the <body> element to the initial contain"...

comment "// disabled. Notably, this affects:"

comment "// - 'overflow' and its longhands (see CSS Overflow 3 §\u{202f}3.3 "...

if_statement (+42 nodes collapsed)

declaration (+26 nodes collapsed)

if_statement (+35 nodes collapsed)

comment "// UAs must apply the overflow-* values set on the root elem"...

comment "// when the root element’s display value is not none."

comment "// NB: Called during layout tree construction."

declaration

placeholder_type_specifier

auto "auto"

init_declarator

identifier "overflow_origin_node"

= "="

call_expression

field_expression

identifier "root_element"

. "."

field_identifier "unsafe_layout_node"

argument_list

( "("

) ")"

; ";"

declaration

placeholder_type_specifier

auto "auto"

init_declarator

reference_declarator

& "&"

identifier "viewport_computed_values"

= "="

call_expression

field_expression

identifier "viewport"

. "."

field_identifier "mutable_computed_values"

argument_list

( "("

) ")"

; ";"

comment "// However, when the root element is an [HTML] html element "...

comment "// whose overflow value is visible (in both axes), and that "...

comment "// a body element whose display value is also not none,"

comment "// user agents must instead apply the overflow-* values of t"...

if_statement

if "if"

condition_clause

( "("

call_expression

field_expression

identifier "root_element"

. "."

field_identifier "is_html_html_element"

argument_list

( "("

) ")"

compound_statement

{ "{"

declaration

placeholder_type_specifier

auto "auto"

init_declarator

identifier "root_element_layout_node"

= "="

call_expression

field_expression

identifier "root_element"

. "."

field_identifier "unsafe_layout_node"

argument_list

( "("

) ")"

; ";"

declaration

placeholder_type_specifier

auto "auto"

init_declarator

reference_declarator

& "&"

identifier "root_element_computed_values"

= "="

call_expression

field_expression

identifier "root_element_layout_node"

-> "->"

field_identifier "mutable_computed_values"

argument_list

( "("

) ")"

; ";"

if_statement

if "if"

condition_clause (+39 nodes collapsed)

compound_statement

{ "{"

declaration (+26 nodes collapsed)

if_statement

if "if"

condition_clause

( "("

binary_expression

identifier "body_element"

&& "&&"

call_expression

field_expression

identifier "body_element"

-> "->"

field_identifier "unsafe_layout_node"

argument_list

( "("

) ")"

expression_statement

assignment_expression

identifier "overflow_origin_node"

= "="

call_expression

field_expression

identifier "body_element"

-> "->"

field_identifier "unsafe_layout_node"

argument_list

( "("

) ")"

; ";"

} "}"

comment "// If 'visible' is applied to the viewport, it must be inter"...

declaration

placeholder_type_specifier

auto "auto"

init_declarator

reference_declarator

& "&"

identifier "overflow_origin_computed_values"

= "="

call_expression

field_expression

identifier "overflow_origin_node"

-> "->"

field_identifier "mutable_computed_values"

argument_list

( "("

) ")"

; ";"

declaration

placeholder_type_specifier

auto "auto"

init_declarator

identifier "overflow_x_to_apply"

= "="

call_expression

field_expression

identifier "overflow_origin_computed_values"

. "."

field_identifier "overflow_x"

argument_list

( "("

) ")"

; ";"

if_statement (+62 nodes collapsed)

declaration

placeholder_type_specifier

auto "auto"

init_declarator

identifier "overflow_y_to_apply"

= "="

call_expression

field_expression

identifier "overflow_origin_computed_values"

. "."

field_identifier "overflow_y"

argument_list

( "("

) ")"

; ";"

if_statement (+62 nodes collapsed)

expression_statement

call_expression

field_expression

identifier "viewport_computed_values"

. "."

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argument_list

( "("

identifier "overflow_x_to_apply"

) ")"

; ";"

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call_expression

field_expression

identifier "viewport_computed_values"

. "."

field_identifier "set_overflow_y"

argument_list

( "("

identifier "overflow_y_to_apply"

) ")"

; ";"

comment "// The element from which the value is propagated must then "...

comment "// FIXME: Apply this to the used values, not the computed on"...

expression_statement

call_expression

field_expression

identifier "overflow_origin_computed_values"

. "."

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( "("

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namespace_identifier "CSS"

:: "::"

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namespace_identifier "Overflow"

:: "::"

identifier "Visible"

) ")"

; ";"

expression_statement

call_expression

field_expression

identifier "overflow_origin_computed_values"

. "."

field_identifier "set_overflow_y"

argument_list

( "("

qualified_identifier

namespace_identifier "CSS"

:: "::"

qualified_identifier

namespace_identifier "Overflow"

:: "::"

identifier "Visible"

) ")"

; ";"

} "}"

function_definition

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qualified_identifier

namespace_identifier "Document"

:: "::"

identifier "update_layout"

parameter_list

( "("

parameter_declaration

type_identifier "UpdateLayoutReason"

identifier "reason"

) ")"

compound_statement

{ "{"

declaration

placeholder_type_specifier

auto "auto"

init_declarator

identifier "navigable"

= "="

call_expression

field_expression

this "this"

-> "->"

field_identifier "navigable"

argument_list

( "("

) ")"

; ";"

if_statement (+24 nodes collapsed)

expression_statement

call_expression

identifier "VERIFY"

argument_list

( "("

unary_expression

! "!"

identifier "m_is_running_update_layout"

) ")"

; ";"

declaration

type_identifier "ScopeGuard"

init_declarator

identifier "guard"

= "="

lambda_expression

lambda_capture_specifier

[ "["

lambda_default_capture

& "&"

] "]"

compound_statement

{ "{"

expression_statement

assignment_expression

identifier "m_is_running_update_layout"

= "="

false "false"

; ";"

} "}"

; ";"

expression_statement

assignment_expression

identifier "m_is_running_update_layout"

= "="

true "true"

; ";"

expression_statement

call_expression

identifier "update_style"

argument_list

( "("

) ")"

; ";"

if_statement

if "if"

condition_clause

( "("

call_expression

identifier "layout_is_up_to_date"

argument_list

( "("

) ")"

return_statement

return "return"

; ";"

declaration

placeholder_type_specifier

auto "auto"

init_declarator

identifier "svg_roots_to_relayout"

= "="

call_expression

identifier "move"

argument_list

( "("

identifier "m_svg_roots_needing_relayout"

) ")"

; ";"

comment "// NOTE: If this is a document hosting <template> contents, "...

if_statement

if "if"

condition_clause

( "("

identifier "m_created_for_appropriate_template_contents"

) ")"

return_statement

return "return"

; ";"

declaration (+33 nodes collapsed)

comment "// Partial SVG relayout"

if_statement (+107 nodes collapsed)

comment "// Clear text blocks cache so we rebuild them on the next fi"...

if_statement

if "if"

condition_clause

( "("

identifier "m_layout_root"

) ")"

expression_statement

call_expression

field_expression

identifier "m_layout_root"

-> "->"

field_identifier "invalidate_text_blocks_cache"

argument_list

( "("

) ")"

; ";"

expression_statement

call_expression

identifier "invalidate_display_list"

argument_list

( "("

) ")"

; ";"

declaration

placeholder_type_specifier

auto "auto"

init_declarator

pointer_declarator

* "*"

identifier "document_element"

= "="

call_expression

field_expression

this "this"

-> "->"

field_identifier "document_element"

argument_list

( "("

) ")"

; ";"

declaration

placeholder_type_specifier

auto "auto"

init_declarator

identifier "viewport_rect"

= "="

call_expression

field_expression

identifier "navigable"

-> "->"

field_identifier "viewport_rect"

argument_list

( "("

) ")"

; ";"

declaration (+25 nodes collapsed)

if_statement

if "if"

condition_clause

( "("

identifier "needs_layout_tree_rebuild"

) ")"

compound_statement

{ "{"

declaration

qualified_identifier

namespace_identifier "Layout"

:: "::"

type_identifier "TreeBuilder"

identifier "tree_builder"

; ";"

expression_statement (+32 nodes collapsed)

comment "// NB: Called during layout update."

if_statement

if "if"

condition_clause

( "("

binary_expression

identifier "document_element"

&& "&&"

call_expression

field_expression

identifier "document_element"

-> "->"

field_identifier "unsafe_layout_node"

argument_list

( "("

) ")"

compound_statement (+31 nodes collapsed)

expression_statement

call_expression

identifier "set_needs_full_layout_tree_update"

argument_list

( "("

false "false"

) ")"

; ";"

if_statement (+37 nodes collapsed)

} "}"

declaration

type_identifier "u32"

init_declarator

identifier "layout_index_counter"

= "="

number_literal "0"

; ";"

expression_statement (+273 nodes collapsed)

declaration

qualified_identifier

namespace_identifier "Layout"

:: "::"

type_identifier "LayoutState"

identifier "layout_state"

; ";"

expression_statement

call_expression

field_expression

identifier "layout_state"

. "."

field_identifier "ensure_capacity"

argument_list

( "("

identifier "layout_index_counter"

) ")"

; ";"

compound_statement

{ "{"

declaration (+27 nodes collapsed)

declaration (+28 nodes collapsed)

declaration

placeholder_type_specifier

auto "auto"

init_declarator

reference_declarator

& "&"

identifier "viewport_state"

= "="

call_expression

field_expression

identifier "layout_state"

. "."

field_identifier "get_mutable"

argument_list

( "("

identifier "viewport"

) ")"

; ";"

expression_statement

call_expression

field_expression

identifier "viewport_state"

. "."

field_identifier "set_content_width"

argument_list

( "("

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field_expression

identifier "viewport_rect"

. "."

field_identifier "width"

argument_list

( "("

) ")"

; ";"

expression_statement

call_expression

field_expression

identifier "viewport_state"

. "."

field_identifier "set_content_height"

argument_list

( "("

call_expression

field_expression

identifier "viewport_rect"

. "."

field_identifier "height"

argument_list

( "("

) ")"

; ";"

comment "// NB: Called during layout update."

if_statement

if "if"

condition_clause

( "("

binary_expression

identifier "document_element"

&& "&&"

call_expression

field_expression

identifier "document_element"

-> "->"

field_identifier "unsafe_layout_node"

argument_list

( "("

) ")"

compound_statement

{ "{"

declaration

placeholder_type_specifier

auto "auto"

init_declarator

reference_declarator

& "&"

identifier "icb_state"

= "="

call_expression

field_expression

identifier "layout_state"

. "."

field_identifier "get_mutable"

argument_list

( "("

call_expression

template_function

identifier "as"

template_argument_list

< "<"

type_descriptor

qualified_identifier

namespace_identifier "Layout"

:: "::"

type_identifier "NodeWithStyleAndBoxModelMetrics"

> ">"

argument_list

( "("

pointer_expression

* "*"

call_expression

field_expression

identifier "document_element"

-> "->"

field_identifier "unsafe_layout_node"

argument_list

( "("

) ")"

; ";"

expression_statement

call_expression

field_expression

identifier "icb_state"

. "."

field_identifier "set_content_width"

argument_list

( "("

call_expression

field_expression

identifier "viewport_rect"

. "."

field_identifier "width"

argument_list

( "("

) ")"

; ";"

} "}"

expression_statement (+57 nodes collapsed)

} "}"

expression_statement

call_expression

field_expression

identifier "layout_state"

. "."

field_identifier "commit"

argument_list

( "("

pointer_expression

* "*"

identifier "m_layout_root"

) ")"

; ";"

comment "// Broadcast the current viewport rect to any new paintables"...

expression_statement

call_expression

identifier "inform_all_viewport_clients_about_the_current_viewport_rect"

argument_list

( "("

) ")"

; ";"

expression_statement

call_expression

field_expression

identifier "m_document"

-> "->"

field_identifier "set_needs_display"

argument_list

( "("

) ")"

; ";"

expression_statement

call_expression

identifier "set_needs_to_resolve_paint_only_properties"

argument_list

( "("

) ")"

; ";"

comment "// NB: Called during layout update."

expression_statement

call_expression

field_expression

call_expression

identifier "unsafe_paintable"

argument_list

( "("

) ")"

-> "->"

field_identifier "assign_scroll_frames"

argument_list

( "("

) ")"

; ";"

expression_statement

call_expression

identifier "set_needs_accumulated_visual_contexts_update"

argument_list

( "("

true "true"

) ")"

; ";"

expression_statement

call_expression

identifier "update_paint_and_hit_testing_properties_if_needed"

argument_list

( "("

) ")"

; ";"

if_statement

if "if"

condition_clause

( "("

declaration

placeholder_type_specifier

auto "auto"

identifier "range"

= "="

call_expression

field_expression

call_expression

identifier "get_selection"

argument_list

( "("

) ")"

-> "->"

field_identifier "range"

argument_list

( "("

) ")"

compound_statement

{ "{"

expression_statement

call_expression

field_expression

call_expression

identifier "unsafe_paintable"

argument_list

( "("

) ")"

-> "->"

field_identifier "recompute_selection_states"

argument_list

( "("

pointer_expression

* "*"

identifier "range"

) ")"

; ";"

} "}"

comment "// Collect elements with content-visibility: auto. This is u"...

declaration (+22 nodes collapsed)

expression_statement

call_expression

field_expression

call_expression

identifier "unsafe_paintable"

argument_list

( "("

) ")"

-> "->"

template_method

field_identifier "for_each_in_subtree_of_type"

template_argument_list

< "<"

type_descriptor

qualified_identifier

namespace_identifier "Painting"

:: "::"

type_identifier "PaintableBox"

> ">"

argument_list (+99 nodes collapsed)

; ";"

expression_statement

call_expression

field_expression

call_expression

identifier "unsafe_paintable"

argument_list

( "("

) ")"

-> "->"

field_identifier "set_paintable_boxes_with_auto_content_visibility"

argument_list

( "("

call_expression

identifier "move"

argument_list

( "("

identifier "paintable_boxes_with_auto_content_visibility"

) ")"

; ";"

expression_statement (+44 nodes collapsed)

if_statement (+44 nodes collapsed)

expression_statement

call_expression

identifier "VERIFY"

argument_list

( "("

call_expression

identifier "layout_is_up_to_date"

argument_list

( "("

) ")"

; ";"

} "}"

function_definition

primitive_type "bool"

function_declarator

qualified_identifier

namespace_identifier "Document"

:: "::"

identifier "layout_is_up_to_date"

parameter_list

( "("

) ")"

type_qualifier

const "const"

compound_statement

{ "{"

if_statement

if "if"

condition_clause

( "("

binary_expression

unary_expression

! "!"

call_expression

identifier "navigable"

argument_list

( "("

) ")"

|| "||"

binary_expression

call_expression

field_expression

call_expression

identifier "navigable"

argument_list

( "("

) ")"

-> "->"

field_identifier "active_document"

argument_list

( "("

) ")"

!= "!="

this "this"

) ")"

return_statement

return "return"

true "true"

; ";"

if_statement

if "if"

condition_clause

( "("

unary_expression

! "!"

identifier "m_layout_root"

) ")"

return_statement

return "return"

false "false"

; ";"

return_statement

return "return"

binary_expression

unary_expression

! "!"

call_expression

field_expression

identifier "m_layout_root"

-> "->"

field_identifier "needs_layout_update"

argument_list

( "("

) ")"

&& "&&"

unary_expression

! "!"

call_expression

identifier "needs_layout_tree_update"

argument_list

( "("

) ")"

&& "&&"

unary_expression

! "!"

call_expression

identifier "child_needs_layout_tree_update"

argument_list

( "("

) ")"

&& "&&"

unary_expression

! "!"

call_expression

identifier "needs_full_layout_tree_update"

argument_list

( "("

) ")"

&& "&&"

call_expression

field_expression

identifier "m_svg_roots_needing_relayout"

. "."

field_identifier "is_empty"

argument_list

( "("

) ")"

; ";"

} "}"

function_definition

attribute_declaration

[[ "[["

attribute

identifier "nodiscard"

]] "]]"

storage_class_specifier

static "static"

qualified_identifier

namespace_identifier "CSS"

:: "::"

type_identifier "RequiredInvalidationAfterStyleChange"

function_declarator (+31 nodes collapsed)

compound_statement

{ "{"

declaration (+23 nodes collapsed)

declaration

qualified_identifier

namespace_identifier "CSS"

:: "::"

type_identifier "RequiredInvalidationAfterStyleChange"

identifier "invalidation"

; ";"

if_statement (+39 nodes collapsed)

comment "// NOTE: If the current node has `display:none`, we can disr"...

comment "// caused by its children, as they will not be rendere"...

comment "// We will still recompute style for the children, tho"...

declaration

primitive_type "bool"

init_declarator

identifier "is_display_none"

= "="

false "false"

; ";"

declaration

primitive_type "bool"

init_declarator

identifier "did_change_custom_properties"

= "="

false "false"

; ";"

declaration

qualified_identifier

namespace_identifier "CSS"

:: "::"

type_identifier "RequiredInvalidationAfterStyleChange"

identifier "node_invalidation"

; ";"

if_statement (+275 nodes collapsed)

if_statement

if "if"

condition_clause

( "("

field_expression

identifier "node_invalidation"

. "."

field_identifier "relayout"

) ")"

expression_statement

call_expression

field_expression

identifier "node"

. "."

field_identifier "set_needs_layout_update"

argument_list

( "("

qualified_identifier

namespace_identifier "SetNeedsLayoutReason"

:: "::"

identifier "StyleChange"

) ")"

; ";"

if_statement (+72 nodes collapsed)

expression_statement

call_expression

field_expression

identifier "node"

. "."

field_identifier "set_needs_style_update"

argument_list

( "("

false "false"

) ")"

; ";"

expression_statement

assignment_expression

identifier "invalidation"

|= "|="

identifier "node_invalidation"

; ";"

if_statement

if "if"

condition_clause

( "("

identifier "did_change_custom_properties"

) ")"

compound_statement

{ "{"

expression_statement

assignment_expression

identifier "recompute_elements_depending_on_custom_properties"

= "="

true "true"

; ";"

} "}"

declaration

primitive_type "bool"

init_declarator

identifier "children_need_inherited_style_update"

= "="

unary_expression

! "!"

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field_expression

identifier "invalidation"

. "."

field_identifier "is_none"

argument_list

( "("

) ")"

; ";"

comment "// NB: When display changes to/from flex/grid/contents, chil"...

comment "// This requires a full style recompute, not just inheri"...

declaration

primitive_type "bool"

init_declarator

identifier "children_need_full_style_recompute"

= "="

field_expression

identifier "node_invalidation"

. "."

field_identifier "rebuild_layout_tree"

; ";"

if_statement (+256 nodes collapsed)

expression_statement

call_expression

field_expression

identifier "node"

. "."

field_identifier "set_child_needs_style_update"

argument_list

( "("

false "false"

) ")"

; ";"

if_statement (+39 nodes collapsed)

return_statement

return "return"

identifier "invalidation"

; ";"

} "}"

function_definition (+428 nodes collapsed)

function_definition (+38 nodes collapsed)

function_definition (+218 nodes collapsed)

function_definition (+117 nodes collapsed)

function_definition

primitive_type "void"

function_declarator

qualified_identifier

namespace_identifier "Document"

:: "::"

identifier "update_paint_and_hit_testing_properties_if_needed"

parameter_list

( "("

) ")"

compound_statement

{ "{"

comment "// NB: Called during paint property resolution."

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if "if"

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( "("

declaration

placeholder_type_specifier

auto "auto"

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* "*"

identifier "paintable"

= "="

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this "this"

-> "->"

field_identifier "unsafe_paintable"

argument_list

( "("

) ")"

compound_statement

{ "{"

expression_statement

call_expression

field_expression

identifier "paintable"

-> "->"

field_identifier "refresh_scroll_state"

argument_list

( "("

) ")"

; ";"

} "}"

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if "if"

condition_clause

( "("

identifier "m_needs_to_resolve_paint_only_properties"

) ")"

compound_statement

{ "{"

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false "false"

; ";"

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if "if"

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( "("

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placeholder_type_specifier

auto "auto"

pointer_declarator

* "*"

identifier "paintable"

= "="

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( "("

) ")"

compound_statement

{ "{"

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identifier "paintable"

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argument_list

( "("

) ")"

; ";"

} "}"

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if "if"

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( "("

identifier "m_needs_accumulated_visual_contexts_update"

) ")"

compound_statement

{ "{"

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identifier "m_needs_accumulated_visual_contexts_update"

= "="

false "false"

; ";"

if_statement

if "if"

condition_clause

( "("

declaration

placeholder_type_specifier

auto "auto"

pointer_declarator

* "*"

identifier "paintable"

= "="

call_expression

field_expression

this "this"

-> "->"

field_identifier "unsafe_paintable"

argument_list

( "("

) ")"

compound_statement

{ "{"

expression_statement

call_expression

field_expression

identifier "paintable"

-> "->"

field_identifier "assign_accumulated_visual_contexts"

argument_list

( "("

) ")"

; ";"

} "}"

function_definition (+22 nodes collapsed)

function_definition (+35 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/semantics.html#met"...

function_definition (+259 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/semantics.html#met"...

function_definition

primitive_type "void"

function_declarator

qualified_identifier

namespace_identifier "Document"

:: "::"

identifier "obtain_theme_color"

parameter_list

( "("

) ")"

compound_statement

{ "{"

declaration

type_identifier "Color"

init_declarator

identifier "theme_color"

= "="

qualified_identifier

namespace_identifier "Color"

:: "::"

identifier "Transparent"

; ";"

comment "// 1. Let candidate elements be the list of all meta element"...

expression_statement

call_expression

template_function

identifier "for_each_in_subtree_of_type"

template_argument_list

< "<"

type_descriptor

qualified_identifier

namespace_identifier "HTML"

:: "::"

type_identifier "HTMLMetaElement"

> ">"

argument_list

( "("

lambda_expression

lambda_capture_specifier

[ "["

lambda_default_capture

& "&"

] "]"

abstract_function_declarator

parameter_list

( "("

parameter_declaration

qualified_identifier

namespace_identifier "HTML"

:: "::"

type_identifier "HTMLMetaElement"

reference_declarator

& "&"

identifier "element"

) ")"

compound_statement

{ "{"

comment "// * the element is in a document tree;"

comment "// * the element has a name attribute, whose value is an"...

comment "// * the element has a content attribute."

comment "// 2. For each element in candidate elements:"

declaration (+22 nodes collapsed)

if_statement

if "if"

condition_clause (+51 nodes collapsed)

compound_statement

{ "{"

comment "// 1. If element has a media attribute and the value of elem"...

declaration (+23 nodes collapsed)

declaration (+22 nodes collapsed)

if_statement (+73 nodes collapsed)

comment "// 2. Let value be the result of stripping leading and trail"...

declaration (+26 nodes collapsed)

comment "// 3. Let color be the result of parsing value."

declaration (+23 nodes collapsed)

comment "// 4. If color is not failure, then return color."

if_statement

if "if"

condition_clause (+23 nodes collapsed)

compound_statement

{ "{"

declaration

qualified_identifier

namespace_identifier "CSS"

:: "::"

type_identifier "ColorResolutionContext"

init_declarator

identifier "color_resolution_context"

initializer_list

{ "{"

} "}"

; ";"

comment "// NB: Called during theme color computation, layout may be "...

if_statement

if "if"

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( "("

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call_expression

identifier "html_element"

argument_list

( "("

) ")"

&& "&&"

call_expression

field_expression

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argument_list

( "("

) ")"

-> "->"

field_identifier "unsafe_layout_node"

argument_list

( "("

) ")"

compound_statement

{ "{"

expression_statement

assignment_expression

identifier "color_resolution_context"

= "="

call_expression

qualified_identifier

namespace_identifier "CSS"

:: "::"

qualified_identifier

namespace_identifier "ColorResolutionContext"

:: "::"

identifier "for_layout_node_with_style"

argument_list

( "("

pointer_expression

* "*"

call_expression

field_expression

call_expression

identifier "html_element"

argument_list

( "("

) ")"

-> "->"

field_identifier "unsafe_layout_node"

argument_list

( "("

) ")"

; ";"

} "}"

expression_statement (+21 nodes collapsed)

return_statement

return "return"

qualified_identifier

namespace_identifier "TraversalDecision"

:: "::"

identifier "Break"

; ";"

} "}"

return_statement

return "return"

qualified_identifier

namespace_identifier "TraversalDecision"

:: "::"

identifier "Continue"

; ";"

} "}"

) ")"

; ";"

comment "// 3. Return nothing(the page has no theme color)."

expression_statement (+29 nodes collapsed)

} "}"

function_definition (+51 nodes collapsed)

function_definition (+45 nodes collapsed)

function_definition

qualified_identifier

namespace_identifier "Layout"

:: "::"

type_identifier "Viewport"

type_qualifier

const "const"

pointer_declarator

* "*"

function_declarator

qualified_identifier

namespace_identifier "Document"

:: "::"

identifier "unsafe_layout_node"

parameter_list

( "("

) ")"

type_qualifier

const "const"

compound_statement

{ "{"

return_statement

return "return"

call_expression

template_function

identifier "static_cast"

template_argument_list

< "<"

type_descriptor

qualified_identifier

namespace_identifier "Layout"

:: "::"

type_identifier "Viewport"

type_qualifier

const "const"

abstract_pointer_declarator

* "*"

> ">"

argument_list

( "("

call_expression

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comment "// https://dom.spec.whatwg.org/#dom-document-createattribute"

function_definition (+112 nodes collapsed)

comment "// https://dom.spec.whatwg.org/#dom-document-createattribute"...

function_definition (+101 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/browsing-the-web.h"...

function_definition (+269 nodes collapsed)

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comment "// https://www.w3.org/TR/intersection-observer/#queue-an-int"...

function_definition (+396 nodes collapsed)

comment "// https://www.w3.org/TR/intersection-observer/#queue-an-int"...

function_definition (+178 nodes collapsed)

comment "// https://www.w3.org/TR/intersection-observer/#compute-the-"...

function_definition (+95 nodes collapsed)

comment "// https://www.w3.org/TR/intersection-observer/#run-the-upda"...

function_definition (+1028 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/urls-and-fetching."...

function_definition (+573 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/urls-and-fetching."...

function_definition (+41 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/semantics.html#sha"...

function_definition (+1138 nodes collapsed)

function_definition (+51 nodes collapsed)

function_definition (+45 nodes collapsed)

function_definition

qualified_identifier

namespace_identifier "Painting"

:: "::"

type_identifier "ViewportPaintable"

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const "const"

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namespace_identifier "Document"

:: "::"

identifier "unsafe_paintable"

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( "("

) ")"

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const "const"

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{ "{"

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return "return"

call_expression

template_function

identifier "static_cast"

template_argument_list

< "<"

type_descriptor

qualified_identifier

namespace_identifier "Painting"

:: "::"

type_identifier "ViewportPaintable"

type_qualifier

const "const"

abstract_pointer_declarator

* "*"

> ">"

argument_list

( "("

call_expression

qualified_identifier

namespace_identifier "Node"

:: "::"

identifier "unsafe_paintable"

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( "("

) ")"

; ";"

} "}"

function_definition

qualified_identifier

namespace_identifier "Painting"

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type_identifier "ViewportPaintable"

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namespace_identifier "Document"

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( "("

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{ "{"

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return "return"

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< "<"

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namespace_identifier "Painting"

:: "::"

type_identifier "ViewportPaintable"

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* "*"

> ">"

argument_list

( "("

call_expression

qualified_identifier

namespace_identifier "Node"

:: "::"

identifier "unsafe_paintable"

argument_list

( "("

) ")"

; ";"

} "}"

comment "// https://html.spec.whatwg.org/multipage/browsing-the-web.h"...

function_definition (+136 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/browsing-the-web.h"...

function_definition (+723 nodes collapsed)

function_definition (+43 nodes collapsed)

comment "// https://www.w3.org/TR/web-animations-1/#dom-document-time"...

function_definition (+68 nodes collapsed)

function_definition (+39 nodes collapsed)

function_definition (+40 nodes collapsed)

comment "// https://www.w3.org/TR/web-animations-1/#update-animations"...

function_definition (+690 nodes collapsed)

comment "// https://www.w3.org/TR/web-animations-1/#remove-replaced-a"...

function_definition (+948 nodes collapsed)

function_definition (+58 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dom.html#dom-docum"...

function_definition (+108 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dom.html#dom-docum"...

function_definition (+57 nodes collapsed)

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function_definition (+269 nodes collapsed)

function_definition (+146 nodes collapsed)

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function_definition (+125 nodes collapsed)

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function_definition (+70 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/interaction.html#m"...

function_definition (+39 nodes collapsed)

function_definition (+200 nodes collapsed)

function_definition (+87 nodes collapsed)

comment "// https://drafts.csswg.org/cssom-view/#dom-document-element"...

function_definition (+315 nodes collapsed)

comment "// https://drafts.csswg.org/cssom-view/#dom-document-element"...

function_definition (+409 nodes collapsed)

comment "// https://drafts.csswg.org/cssom-view/#dom-document-scrolli"...

function_definition (+128 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dom.html#exposed"

function_definition (+64 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dom.html#dom-tree-"...

function_definition (+415 nodes collapsed)

function_definition (+281 nodes collapsed)

function_definition (+118 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dom.html#dom-docum"...

function_definition (+255 nodes collapsed)

comment "// https://drafts.csswg.org/resize-observer-1/#calculate-dep"...

function_definition (+68 nodes collapsed)

comment "// https://drafts.csswg.org/resize-observer-1/#gather-active"...

function_definition (+184 nodes collapsed)

comment "// https://drafts.csswg.org/resize-observer-1/#broadcast-act"...

function_definition (+456 nodes collapsed)

comment "// https://drafts.csswg.org/resize-observer-1/#has-active-ob"...

function_definition (+60 nodes collapsed)

comment "// https://drafts.csswg.org/resize-observer-1/#has-skipped-o"...

function_definition (+60 nodes collapsed)

function_definition (+67 nodes collapsed)

function_definition (+179 nodes collapsed)

function_definition (+196 nodes collapsed)

function_definition (+64 nodes collapsed)

function_definition (+144 nodes collapsed)

function_definition (+602 nodes collapsed)

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function_definition (+37 nodes collapsed)

comment "// https://drafts.csswg.org/css-position-4/#add-an-element-t"...

function_definition (+141 nodes collapsed)

comment "// https://drafts.csswg.org/css-position-4/#request-an-eleme"...

function_definition (+114 nodes collapsed)

comment "// https://drafts.csswg.org/css-position-4/#remove-an-elemen"...

function_definition (+83 nodes collapsed)

comment "// https://drafts.csswg.org/css-position-4/#process-top-laye"...

function_definition

primitive_type "void"

function_declarator

qualified_identifier

namespace_identifier "Document"

:: "::"

identifier "process_top_layer_removals"

parameter_list

( "("

) ")"

compound_statement

{ "{"

comment "// 1. For each element el in doc’s pending top layer removal"...

comment "// not rendered, remove el from doc’s top layer and pendi"...

declaration (+32 nodes collapsed)

comment "// NB: Called during top layer processing."

for_range_loop

for "for"

( "("

placeholder_type_specifier

auto "auto"

reference_declarator

& "&"

identifier "element"

: ":"

identifier "m_top_layer_pending_removals"

) ")"

compound_statement

{ "{"

comment "// FIXME: Implement overlay property"

if_statement

if "if"

condition_clause

( "("

unary_expression

! "!"

call_expression

field_expression

identifier "element"

-> "->"

field_identifier "unsafe_paintable"

argument_list

( "("

) ")"

compound_statement

{ "{"

expression_statement

call_expression

field_expression

identifier "elements_to_remove"

. "."

field_identifier "append"

argument_list

( "("

identifier "element"

) ")"

; ";"

} "}"

for_range_loop (+36 nodes collapsed)

if_statement (+26 nodes collapsed)

} "}"

comment "// https://html.spec.whatwg.org/multipage/popover.html#topmo"...

function_definition (+87 nodes collapsed)

function_definition

primitive_type "void"

function_declarator

qualified_identifier

namespace_identifier "Document"

:: "::"

identifier "set_needs_to_refresh_scroll_state"

parameter_list

( "("

parameter_declaration

primitive_type "bool"

identifier "b"

) ")"

compound_statement

{ "{"

comment "// NB: Propagating scroll state invalidation."

if_statement

if "if"

condition_clause

( "("

declaration

placeholder_type_specifier

auto "auto"

pointer_declarator

* "*"

identifier "paintable"

= "="

call_expression

field_expression

this "this"

-> "->"

field_identifier "unsafe_paintable"

argument_list

( "("

) ")"

expression_statement

call_expression

field_expression

identifier "paintable"

-> "->"

field_identifier "set_needs_to_refresh_scroll_state"

argument_list

( "("

identifier "b"

) ")"

; ";"

} "}"

function_definition (+599 nodes collapsed)

comment "// https://dom.spec.whatwg.org/#document-allow-declarative-s"...

function_definition

primitive_type "bool"

function_declarator

qualified_identifier

namespace_identifier "Document"

:: "::"

identifier "allow_declarative_shadow_roots"

parameter_list

( "("

) ")"

type_qualifier

const "const"

compound_statement

{ "{"

return_statement

return "return"

identifier "m_allow_declarative_shadow_roots"

; ";"

} "}"

function_definition (+39 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dom.html#render-bl"...

function_definition (+108 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dom.html#allows-ad"...

function_definition (+39 nodes collapsed)

function_definition (+36 nodes collapsed)

comment "// https://fullscreen.spec.whatwg.org/#run-the-fullscreen-st"...

function_definition (+282 nodes collapsed)

function_definition (+50 nodes collapsed)

comment "// https://fullscreen.spec.whatwg.org/#fullscreen-an-element"

function_definition (+270 nodes collapsed)

comment "// https://fullscreen.spec.whatwg.org/#fullscreen-element"

function_definition (+75 nodes collapsed)

comment "// https://fullscreen.spec.whatwg.org/#dom-document-fullscre"...

function_definition (+182 nodes collapsed)

comment "// https://fullscreen.spec.whatwg.org/#dom-document-fullscre"...

function_definition (+28 nodes collapsed)

comment "// https://fullscreen.spec.whatwg.org/#dom-document-fullscre"...

function_definition (+28 nodes collapsed)

comment "// https://fullscreen.spec.whatwg.org/#fully-exit-fullscreen"

function_definition (+198 nodes collapsed)

comment "// https://fullscreen.spec.whatwg.org/#exit-fullscreen"

function_definition (+791 nodes collapsed)

comment "// https://fullscreen.spec.whatwg.org/#unfullscreen-a-docume"...

function_definition (+129 nodes collapsed)

comment "// https://fullscreen.spec.whatwg.org/#simple-fullscreen-doc"...

function_definition (+81 nodes collapsed)

comment "// https://fullscreen.spec.whatwg.org/#collect-documents-to-"...

function_definition (+303 nodes collapsed)

comment "// https://fullscreen.spec.whatwg.org/#unfullscreen-an-eleme"...

function_definition (+90 nodes collapsed)

comment "// https://dom.spec.whatwg.org/#document-allow-declarative-s"...

function_definition (+22 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dynamic-markup-ins"...

function_definition (+117 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/dynamic-markup-ins"...

function_definition (+261 nodes collapsed)

function_definition (+179 nodes collapsed)

function_definition (+238 nodes collapsed)

function_definition (+48 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/document-sequences"...

function_definition (+65 nodes collapsed)

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function_definition (+41 nodes collapsed)

function_definition (+30 nodes collapsed)

function_definition (+188 nodes collapsed)

function_definition (+87 nodes collapsed)

function_definition (+28 nodes collapsed)

function_definition (+673 nodes collapsed)

function_definition (+57 nodes collapsed)

comment "// https://html.spec.whatwg.org/multipage/browsing-the-web.h"...

function_definition (+294 nodes collapsed)

comment "// https://w3c.github.io/webappsec-csp/#run-document-csp-ini"...

function_definition (+114 nodes collapsed)

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function_definition (+33 nodes collapsed)

function_definition (+37 nodes collapsed)

function_definition (+33 nodes collapsed)

function_definition (+37 nodes collapsed)

function_definition (+33 nodes collapsed)

function_definition (+37 nodes collapsed)

comment "// https://drafts.csswg.org/css-view-transitions-1/#dom-docu"...

function_definition (+250 nodes collapsed)

comment "// https://drafts.csswg.org/css-view-transitions-1/#perform-"...

function_definition (+100 nodes collapsed)

comment "// https://drafts.csswg.org/css-view-transitions-1/#flush-th"...

function_definition (+50 nodes collapsed)

comment "// https://drafts.csswg.org/css-view-transitions-1/#view-tra"...

function_definition (+179 nodes collapsed)

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function_definition (+1143 nodes collapsed)

function_definition (+125 nodes collapsed)

function_definition (+434 nodes collapsed)

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function_definition (+44 nodes collapsed)

comment "// https://drafts.css-houdini.org/css-properties-values-api/"...

function_definition (+114 nodes collapsed)

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function_definition (+145 nodes collapsed)

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function_definition (+24 nodes collapsed)

} "}"