/* * Copyright (C) 2012, Google Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of * its contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifdef UNSAFE_BUFFERS_BUILD // TODO(crbug.com/351564777): Remove this and convert code to safer constructs. #pragma allow_unsafe_buffers #endif #include "third_party/blink/renderer/modules/accessibility/ax_node_object.h" #include <math.h> #include <algorithm> #include <memory> #include <optional> #include <queue> #include "base/auto_reset.h" #include "base/containers/contains.h" #include "base/containers/fixed_flat_set.h" #include "base/numerics/safe_conversions.h" #include "third_party/blink/public/common/features.h" #include "third_party/blink/public/common/input/web_keyboard_event.h" #include "third_party/blink/public/mojom/frame/user_activation_notification_type.mojom-blink.h" #include "third_party/blink/public/strings/grit/blink_strings.h" #include "third_party/blink/renderer/bindings/core/v8/v8_image_bitmap_options.h" #include "third_party/blink/renderer/core/aom/accessible_node.h" #include "third_party/blink/renderer/core/css/counter_style_map.h" #include "third_party/blink/renderer/core/css/css_resolution_units.h" #include "third_party/blink/renderer/core/css/properties/longhands.h" #include "third_party/blink/renderer/core/display_lock/display_lock_utilities.h" #include "third_party/blink/renderer/core/dom/flat_tree_traversal.h" #include "third_party/blink/renderer/core/dom/focus_params.h" #include "third_party/blink/renderer/core/dom/layout_tree_builder_traversal.h" #include "third_party/blink/renderer/core/dom/node_computed_style.h" #include "third_party/blink/renderer/core/dom/node_traversal.h" #include "third_party/blink/renderer/core/dom/qualified_name.h" #include "third_party/blink/renderer/core/dom/shadow_root.h" #include "third_party/blink/renderer/core/dom/text.h" #include "third_party/blink/renderer/core/editing/editing_utilities.h" #include "third_party/blink/renderer/core/editing/markers/custom_highlight_marker.h" #include "third_party/blink/renderer/core/editing/markers/document_marker_controller.h" #include "third_party/blink/renderer/core/editing/position.h" #include "third_party/blink/renderer/core/events/event_util.h" #include "third_party/blink/renderer/core/events/keyboard_event.h" #include "third_party/blink/renderer/core/frame/local_dom_window.h" #include "third_party/blink/renderer/core/frame/local_frame.h" #include "third_party/blink/renderer/core/frame/local_frame_view.h" #include "third_party/blink/renderer/core/frame/settings.h" #include "third_party/blink/renderer/core/highlight/highlight.h" #include "third_party/blink/renderer/core/html/canvas/html_canvas_element.h" #include "third_party/blink/renderer/core/html/canvas/image_data.h" #include "third_party/blink/renderer/core/html/custom/element_internals.h" #include "third_party/blink/renderer/core/html/fenced_frame/html_fenced_frame_element.h" #include "third_party/blink/renderer/core/html/forms/html_button_element.h" #include "third_party/blink/renderer/core/html/forms/html_data_list_element.h" #include "third_party/blink/renderer/core/html/forms/html_field_set_element.h" #include "third_party/blink/renderer/core/html/forms/html_form_control_element.h" #include "third_party/blink/renderer/core/html/forms/html_form_element.h" #include "third_party/blink/renderer/core/html/forms/html_input_element.h" #include "third_party/blink/renderer/core/html/forms/html_label_element.h" #include "third_party/blink/renderer/core/html/forms/html_legend_element.h" #include "third_party/blink/renderer/core/html/forms/html_listbox_element.h" #include "third_party/blink/renderer/core/html/forms/html_opt_group_element.h" #include "third_party/blink/renderer/core/html/forms/html_option_element.h" #include "third_party/blink/renderer/core/html/forms/html_output_element.h" #include "third_party/blink/renderer/core/html/forms/html_select_element.h" #include "third_party/blink/renderer/core/html/forms/html_select_list_element.h" #include "third_party/blink/renderer/core/html/forms/html_text_area_element.h" #include "third_party/blink/renderer/core/html/forms/labels_node_list.h" #include "third_party/blink/renderer/core/html/forms/radio_input_type.h" #include "third_party/blink/renderer/core/html/forms/text_control_element.h" #include "third_party/blink/renderer/core/html/html_anchor_element.h" #include "third_party/blink/renderer/core/html/html_body_element.h" #include "third_party/blink/renderer/core/html/html_details_element.h" #include "third_party/blink/renderer/core/html/html_dialog_element.h" #include "third_party/blink/renderer/core/html/html_div_element.h" #include "third_party/blink/renderer/core/html/html_dlist_element.h" #include "third_party/blink/renderer/core/html/html_element.h" #include "third_party/blink/renderer/core/html/html_embed_element.h" #include "third_party/blink/renderer/core/html/html_frame_element_base.h" #include "third_party/blink/renderer/core/html/html_hr_element.h" #include "third_party/blink/renderer/core/html/html_html_element.h" #include "third_party/blink/renderer/core/html/html_image_element.h" #include "third_party/blink/renderer/core/html/html_li_element.h" #include "third_party/blink/renderer/core/html/html_map_element.h" #include "third_party/blink/renderer/core/html/html_menu_element.h" #include "third_party/blink/renderer/core/html/html_meter_element.h" #include "third_party/blink/renderer/core/html/html_olist_element.h" #include "third_party/blink/renderer/core/html/html_paragraph_element.h" #include "third_party/blink/renderer/core/html/html_permission_element.h" #include "third_party/blink/renderer/core/html/html_plugin_element.h" #include "third_party/blink/renderer/core/html/html_progress_element.h" #include "third_party/blink/renderer/core/html/html_slot_element.h" #include "third_party/blink/renderer/core/html/html_span_element.h" #include "third_party/blink/renderer/core/html/html_summary_element.h" #include "third_party/blink/renderer/core/html/html_table_caption_element.h" #include "third_party/blink/renderer/core/html/html_table_cell_element.h" #include "third_party/blink/renderer/core/html/html_table_col_element.h" #include "third_party/blink/renderer/core/html/html_table_element.h" #include "third_party/blink/renderer/core/html/html_table_row_element.h" #include "third_party/blink/renderer/core/html/html_table_section_element.h" #include "third_party/blink/renderer/core/html/html_time_element.h" #include "third_party/blink/renderer/core/html/html_ulist_element.h" #include "third_party/blink/renderer/core/html/media/html_audio_element.h" #include "third_party/blink/renderer/core/html/media/html_media_element.h" #include "third_party/blink/renderer/core/html/media/html_video_element.h" #include "third_party/blink/renderer/core/html/parser/html_parser_idioms.h" #include "third_party/blink/renderer/core/html/shadow/shadow_element_names.h" #include "third_party/blink/renderer/core/html_names.h" #include "third_party/blink/renderer/core/imagebitmap/image_bitmap.h" #include "third_party/blink/renderer/core/input_type_names.h" #include "third_party/blink/renderer/core/layout/hit_test_location.h" #include "third_party/blink/renderer/core/layout/hit_test_result.h" #include "third_party/blink/renderer/core/layout/inline/abstract_inline_text_box.h" #include "third_party/blink/renderer/core/layout/inline/inline_cursor.h" #include "third_party/blink/renderer/core/layout/inline/inline_node.h" #include "third_party/blink/renderer/core/layout/inline/offset_mapping.h" #include "third_party/blink/renderer/core/layout/layout_block_flow.h" #include "third_party/blink/renderer/core/layout/layout_box_model_object.h" #include "third_party/blink/renderer/core/layout/layout_html_canvas.h" #include "third_party/blink/renderer/core/layout/layout_inline.h" #include "third_party/blink/renderer/core/layout/layout_object.h" #include "third_party/blink/renderer/core/layout/layout_view.h" #include "third_party/blink/renderer/core/layout/table/layout_table.h" #include "third_party/blink/renderer/core/layout/table/layout_table_cell.h" #include "third_party/blink/renderer/core/layout/table/layout_table_row.h" #include "third_party/blink/renderer/core/layout/table/layout_table_section.h" #include "third_party/blink/renderer/core/loader/progress_tracker.h" #include "third_party/blink/renderer/core/mathml/mathml_element.h" #include "third_party/blink/renderer/core/mathml_names.h" #include "third_party/blink/renderer/core/navigation_api/navigation_api.h" #include "third_party/blink/renderer/core/page/focus_controller.h" #include "third_party/blink/renderer/core/page/page.h" #include "third_party/blink/renderer/core/style/computed_style_constants.h" #include "third_party/blink/renderer/core/svg/svg_a_element.h" #include "third_party/blink/renderer/core/svg/svg_desc_element.h" #include "third_party/blink/renderer/core/svg/svg_element.h" #include "third_party/blink/renderer/core/svg/svg_foreign_object_element.h" #include "third_party/blink/renderer/core/svg/svg_g_element.h" #include "third_party/blink/renderer/core/svg/svg_svg_element.h" #include "third_party/blink/renderer/core/svg/svg_symbol_element.h" #include "third_party/blink/renderer/core/svg/svg_text_element.h" #include "third_party/blink/renderer/core/svg/svg_title_element.h" #include "third_party/blink/renderer/core/svg/svg_use_element.h" #include "third_party/blink/renderer/core/xlink_names.h" #include "third_party/blink/renderer/modules/accessibility/ax_image_map_link.h" #include "third_party/blink/renderer/modules/accessibility/ax_inline_text_box.h" #include "third_party/blink/renderer/modules/accessibility/ax_node_object.h" #include "third_party/blink/renderer/modules/accessibility/ax_object_cache_impl.h" #include "third_party/blink/renderer/modules/accessibility/ax_position.h" #include "third_party/blink/renderer/modules/accessibility/ax_range.h" #include "third_party/blink/renderer/modules/accessibility/ax_relation_cache.h" #include "third_party/blink/renderer/platform/graphics/image_data_buffer.h" #include "third_party/blink/renderer/platform/keyboard_codes.h" #include "third_party/blink/renderer/platform/runtime_enabled_features.h" #include "third_party/blink/renderer/platform/text/platform_locale.h" #include "third_party/blink/renderer/platform/text/text_direction.h" #include "third_party/blink/renderer/platform/weborigin/kurl.h" #include "third_party/blink/renderer/platform/wtf/text/string_builder.h" #include "third_party/skia/include/core/SkImage.h" #include "ui/accessibility/ax_common.h" #include "ui/accessibility/ax_role_properties.h" #include "ui/events/keycodes/dom/dom_code.h" #include "ui/events/keycodes/dom/keycode_converter.h" #include "ui/gfx/geometry/transform.h" namespace { bool ShouldUseLayoutNG(const blink::LayoutObject& layout_object) { … } // It is not easily possible to find out if an element is the target of an // in-page link. // As a workaround, we consider the following to be potential targets: // - <a name> // - <foo id> -- an element with an id that is not SVG, a <label> or <optgroup>. // <label> does not make much sense as an in-page link target. // Exposing <optgroup> is redundant, as the group is already exposed via a // child in its shadow DOM, which contains the accessible name. // #document -- this is always a potential link target via <a name="#">. // This is a compromise that does not include too many elements, and // has minimal impact on tests. bool IsPotentialInPageLinkTarget(blink::Node& node) { … } bool IsLinkable(const blink::AXObject& object) { … } bool IsImageOrAltText(blink::LayoutObject* layout_object, blink::Node* node) { … } bool ShouldIgnoreListItem(blink::Node* node) { … } bool IsNeutralWithinTable(blink::AXObject* obj) { … } // Within a table, provide the accessible, semantic parent of |node|, // by traversing the DOM tree, ignoring elements that are neutral in a table. // Return the AXObject for the ancestor. blink::AXObject* GetDOMTableAXAncestor(blink::Node* node, blink::AXObjectCacheImpl& cache) { … } // Return the first LayoutTableSection if maybe_table is a non-anonymous // table. If non-null, set table_out to the containing table. blink::LayoutTableSection* FirstTableSection( blink::LayoutObject* maybe_table, blink::LayoutTable** table_out = nullptr) { … } enum class AXAction { … }; blink::KeyboardEvent* CreateKeyboardEvent( blink::LocalDOMWindow* local_dom_window, blink::WebInputEvent::Type type, AXAction action, blink::AccessibilityOrientation orientation, ax::mojom::blink::WritingDirection text_direction) { … } unsigned TextStyleFlag(ax::mojom::blink::TextStyle text_style_enum) { … } ax::mojom::blink::TextDecorationStyle TextDecorationStyleToAXTextDecorationStyle( const blink::ETextDecorationStyle text_decoration_style) { … } String GetTitle(blink::Element* element) { … } bool CanHaveInlineTextBoxChildren(const blink::AXObject* obj) { … } bool HasLayoutText(const blink::AXObject* obj) { … } } // namespace namespace blink { kAltAttr; kTitleAttr; kTypeAttr; kValueAttr; FormControlType; // In ARIA 1.1, default value of aria-level was changed to 2. const int kDefaultHeadingLevel = …; // When an AXNodeObject is created with a Node instead of a LayoutObject it // means that the LayoutObject is purposely being set to null, as it is not // relevant for this object in the AX tree. AXNodeObject::AXNodeObject(Node* node, AXObjectCacheImpl& ax_object_cache) : … { … } AXNodeObject::AXNodeObject(LayoutObject* layout_object, AXObjectCacheImpl& ax_object_cache) : … { … } AXNodeObject::~AXNodeObject() { … } void AXNodeObject::AlterSliderOrSpinButtonValue(bool increase) { … } AXObject* AXNodeObject::ActiveDescendant() const { … } bool IsExemptFromInlineBlockCheck(ax::mojom::blink::Role role) { … } AXObjectInclusion AXNodeObject::ShouldIncludeBasedOnSemantics( IgnoredReasons* ignored_reasons) const { … } bool AXNodeObject::ComputeIsIgnored( IgnoredReasons* ignored_reasons) const { … } // static std::optional<String> AXNodeObject::GetCSSAltText(const Element* element) { … } // The following lists are for deciding whether the tags aside, // header and footer can be interpreted as roles complementary, banner and // contentInfo or if they should be interpreted as generic, sectionheader, or // sectionfooter. // This function only handles the complementary, banner, and contentInfo roles, // which belong to the landmark roles set. static HashSet<ax::mojom::blink::Role>& GetLandmarkIsNotAllowedAncestorRoles( ax::mojom::blink::Role landmark) { … } bool AXNodeObject::IsDescendantOfLandmarkDisallowedElement() const { … } static bool IsNonEmptyNonHeaderCell(const Node* cell) { … } static bool IsHeaderCell(const Node* cell) { … } static ax::mojom::blink::Role DecideRoleFromSiblings(Element* cell) { … } ax::mojom::blink::Role AXNodeObject::DetermineTableSectionRole() const { … } ax::mojom::blink::Role AXNodeObject::DetermineTableRowRole() const { … } ax::mojom::blink::Role AXNodeObject::DetermineTableCellRole() const { … } unsigned AXNodeObject::ColumnCount() const { … } unsigned AXNodeObject::RowCount() const { … } unsigned AXNodeObject::ColumnIndex() const { … } unsigned AXNodeObject::RowIndex() const { … } unsigned AXNodeObject::ColumnSpan() const { … } unsigned AXNodeObject::RowSpan() const { … } ax::mojom::blink::SortDirection AXNodeObject::GetSortDirection() const { … } AXObject* AXNodeObject::CellForColumnAndRow(unsigned target_column_index, unsigned target_row_index) const { … } bool AXNodeObject::FindAllTableCellsWithRole(ax::mojom::blink::Role role, AXObjectVector& cells) const { … } void AXNodeObject::ColumnHeaders(AXObjectVector& headers) const { … } void AXNodeObject::RowHeaders(AXObjectVector& headers) const { … } AXObject* AXNodeObject::HeaderObject() const { … } // The following is a heuristic used to determine if a // <table> should be with ax::mojom::blink::Role::kTable or // ax::mojom::blink::Role::kLayoutTable. // Only "data" tables should be exposed as tables. // Unfortunately, there is no determinsistic or precise way to differentiate a // layout table vs a data table. Fortunately, CSS authoring techniques have // improved a lot and mostly supplanted the practice of using tables for layout. bool AXNodeObject::IsDataTable() const { … } // TODO(accessibility) Consider combining with NativeRoleIgnoringAria(). ax::mojom::blink::Role AXNodeObject::RoleFromLayoutObjectOrNode() const { … } // Does not check ARIA role, but does check some ARIA properties, specifically // @aria-haspopup/aria-pressed via ButtonType(). ax::mojom::blink::Role AXNodeObject::NativeRoleIgnoringAria() const { … } ax::mojom::blink::Role AXNodeObject::DetermineRoleValue() { … } void AXNodeObject::AccessibilityChildrenFromAOMProperty( AOMRelationListProperty property, AXObject::AXObjectVector& children) const { … } static Element* SiblingWithAriaRole(String role, Node* node) { … } Element* AXNodeObject::MenuItemElementForMenu() const { … } void AXNodeObject::Init(AXObject* parent) { … } void AXNodeObject::Detach() { … } bool AXNodeObject::IsAXNodeObject() const { … } bool AXNodeObject::IsControl() const { … } bool AXNodeObject::IsAutofillAvailable() const { … } bool AXNodeObject::IsDefault() const { … } bool AXNodeObject::IsFieldset() const { … } bool AXNodeObject::IsHovered() const { … } bool AXNodeObject::IsImageButton() const { … } bool AXNodeObject::IsInputImage() const { … } bool AXNodeObject::IsLineBreakingObject() const { … } bool AXNodeObject::IsLoaded() const { … } bool AXNodeObject::IsMultiSelectable() const { … } bool AXNodeObject::IsNativeImage() const { … } bool AXNodeObject::IsVisible() const { … } bool AXNodeObject::IsOffScreen() const { … } bool AXNodeObject::IsLinked() const { … } bool AXNodeObject::IsVisited() const { … } bool AXNodeObject::IsProgressIndicator() const { … } bool AXNodeObject::IsSlider() const { … } bool AXNodeObject::IsSpinButton() const { … } bool AXNodeObject::IsNativeSlider() const { … } bool AXNodeObject::IsNativeSpinButton() const { … } bool AXNodeObject::IsEmbeddingElement() const { … } bool AXNodeObject::IsClickable() const { … } bool AXNodeObject::IsFocused() const { … } AccessibilitySelectedState AXNodeObject::IsSelected() const { … } bool AXNodeObject::IsSelectedFromFocusSupported() const { … } // In single selection containers, selection follows focus unless aria_selected // is set to false. This is only valid for a subset of elements. bool AXNodeObject::IsSelectedFromFocus() const { … } // Returns true if the object is marked user-select:none bool AXNodeObject::IsNotUserSelectable() const { … } bool AXNodeObject::IsTabItemSelected() const { … } AXRestriction AXNodeObject::Restriction() const { … } AccessibilityExpanded AXNodeObject::IsExpanded() const { … } bool AXNodeObject::IsRequired() const { … } bool AXNodeObject::CanvasHasFallbackContent() const { … } int AXNodeObject::HeadingLevel() const { … } unsigned AXNodeObject::HierarchicalLevel() const { … } String AXNodeObject::AutoComplete() const { … } // TODO(nektar): Consider removing this method in favor of // AXInlineTextBox::GetDocumentMarkers, or add document markers to the tree data // instead of nodes objects. void AXNodeObject::SerializeMarkerAttributes(ui::AXNodeData* node_data) const { … } ax::mojom::blink::ListStyle AXNodeObject::GetListStyle() const { … } AXObject* AXNodeObject::InPageLinkTarget() const { … } const AtomicString& AXNodeObject::EffectiveTarget() const { … } AccessibilityOrientation AXNodeObject::Orientation() const { … } // According to the standard, the figcaption should only be the first or // last child: https://html.spec.whatwg.org/#the-figcaption-element AXObject* AXNodeObject::GetChildFigcaption() const { … } AXObject::AXObjectVector AXNodeObject::RadioButtonsInGroup() const { … } // static HeapVector<Member<HTMLInputElement>> AXNodeObject::FindAllRadioButtonsWithSameName(HTMLInputElement* radio_button) { … } ax::mojom::blink::WritingDirection AXNodeObject::GetTextDirection() const { … } ax::mojom::blink::TextPosition AXNodeObject::GetTextPositionFromRole() const { … } ax::mojom::blink::TextPosition AXNodeObject::GetTextPosition() const { … } void AXNodeObject::GetTextStyleAndTextDecorationStyle( int32_t* text_style, ax::mojom::blink::TextDecorationStyle* text_overline_style, ax::mojom::blink::TextDecorationStyle* text_strikethrough_style, ax::mojom::blink::TextDecorationStyle* text_underline_style) const { … } ax::mojom::blink::TextAlign AXNodeObject::GetTextAlign() const { … } float AXNodeObject::GetTextIndent() const { … } String AXNodeObject::ImageDataUrl(const gfx::Size& max_size) const { … } const AtomicString& AXNodeObject::AccessKey() const { … } RGBA32 AXNodeObject::ColorValue() const { … } RGBA32 AXNodeObject::BackgroundColor() const { … } RGBA32 AXNodeObject::GetColor() const { … } const AtomicString& AXNodeObject::ComputedFontFamily() const { … } String AXNodeObject::FontFamilyForSerialization() const { … } // Blink font size is provided in pixels. // Platform APIs may convert to another unit (IA2 converts to points). float AXNodeObject::FontSize() const { … } float AXNodeObject::FontWeight() const { … } ax::mojom::blink::AriaCurrentState AXNodeObject::GetAriaCurrentState() const { … } ax::mojom::blink::InvalidState AXNodeObject::GetInvalidState() const { … } bool AXNodeObject::IsValidFormControl(ListedElement* form_control) const { … } int AXNodeObject::PosInSet() const { … } int AXNodeObject::SetSize() const { … } bool AXNodeObject::ValueForRange(float* out_value) const { … } bool AXNodeObject::MaxValueForRange(float* out_value) const { … } bool AXNodeObject::MinValueForRange(float* out_value) const { … } bool AXNodeObject::StepValueForRange(float* out_value) const { … } KURL AXNodeObject::Url() const { … } AXObject* AXNodeObject::ChooserPopup() const { … } String AXNodeObject::GetValueForControl() const { … } String AXNodeObject::GetValueForControl(AXObjectSet& visited) const { … } String AXNodeObject::SlowGetValueForControlIncludingContentEditable() const { … } String AXNodeObject::SlowGetValueForControlIncludingContentEditable( AXObjectSet& visited) const { … } ax::mojom::blink::Role AXNodeObject::RawAriaRole() const { … } void AXNodeObject::AriaDescribedbyElements(AXObjectVector& describedby) const { … } void AXNodeObject::AriaOwnsElements(AXObjectVector& owns) const { … } ax::mojom::blink::HasPopup AXNodeObject::HasPopup() const { … } ax::mojom::blink::IsPopup AXNodeObject::IsPopup() const { … } bool AXNodeObject::IsEditableRoot() const { … } bool AXNodeObject::HasContentEditableAttributeSet() const { … } // Returns the nearest block-level LayoutBlockFlow ancestor static LayoutBlockFlow* GetNearestBlockFlow(LayoutObject* object) { … } // Returns true if |r1| and |r2| are both non-null, both inline, and are // contained within the same LayoutBlockFlow. static bool IsInSameBlockFlow(LayoutObject* r1, LayoutObject* r2) { … } // // Modify or take an action on an object. // bool AXNodeObject::OnNativeSetSelectedAction(bool selected) { … } bool AXNodeObject::OnNativeSetValueAction(const String& string) { … } // // New AX name calculation. // String AXNodeObject::GetName(ax::mojom::blink::NameFrom& name_from, AXObjectVector* name_objects) const { … } String AXNodeObject::TextAlternative( bool recursive, const AXObject* aria_label_or_description_root, AXObjectSet& visited, ax::mojom::blink::NameFrom& name_from, AXRelatedObjectVector* related_objects, NameSources* name_sources) const { … } static bool ShouldInsertSpaceBetweenObjectsIfNeeded( AXObject* previous, AXObject* next, ax::mojom::blink::NameFrom last_used_name_from, ax::mojom::blink::NameFrom name_from) { … } String AXNodeObject::TextFromDescendants( AXObjectSet& visited, const AXObject* aria_label_or_description_root, bool recursive) const { … } // static bool AXNodeObject::IsNameFromLabelElement(HTMLElement* control) { … } // static bool AXNodeObject::IsRedundantLabel(HTMLLabelElement* label) { … } void AXNodeObject::GetRelativeBounds(AXObject** out_container, gfx::RectF& out_bounds_in_container, gfx::Transform& out_container_transform, bool* clips_children) const { … } bool AXNodeObject::HasValidHTMLTableStructureAndLayout() const { … } void AXNodeObject::AddTableChildren() { … } int AXNodeObject::TextOffsetInFormattingContext(int offset) const { … } // // Inline text boxes. // bool AXNodeObject::ShouldLoadInlineTextBoxes() const { … } void AXNodeObject::LoadInlineTextBoxes() { … } void AXNodeObject::LoadInlineTextBoxesHelper() { … } void AXNodeObject::AddInlineTextBoxChildren() { … } void AXNodeObject::AddValidationMessageChild() { … } void AXNodeObject::AddImageMapChildren() { … } void AXNodeObject::AddPopupChildren() { … } void AXNodeObject::AddPseudoElementChildrenFromLayoutTree() { … } void AXNodeObject::AddNodeChildren() { … } void AXNodeObject::AddMenuListChildren() { … } void AXNodeObject::AddMenuListPopupChildren() { … } void AXNodeObject::AddAccessibleNodeChildren() { … } void AXNodeObject::AddOwnedChildren() { … } void AXNodeObject::AddChildrenImpl() { … } void AXNodeObject::AddChildren() { … } // Add non-owned children that are backed with a DOM node. void AXNodeObject::AddNodeChild(Node* node) { … } #if DCHECK_IS_ON() void AXNodeObject::CheckValidChild(AXObject* child) { … } #endif void AXNodeObject::AddChild(AXObject* child, bool is_from_aria_owns) { … } void AXNodeObject::AddChildAndCheckIncluded(AXObject* child, bool is_from_aria_owns) { … } void AXNodeObject::InsertChild(AXObject* child, unsigned index, bool is_from_aria_owns) { … } bool AXNodeObject::CanHaveChildren() const { … } // // Properties of the object's owning document or page. // double AXNodeObject::EstimatedLoadingProgress() const { … } // // DOM and Render tree access. // Element* AXNodeObject::ActionElement() const { … } Element* AXNodeObject::AnchorElement() const { … } Document* AXNodeObject::GetDocument() const { … } Node* AXNodeObject::GetNode() const { … } LayoutObject* AXNodeObject::GetLayoutObject() const { … } bool AXNodeObject::HasAttribute(const QualifiedName& attribute) const { … } const AtomicString& AXNodeObject::GetAttribute( const QualifiedName& attribute) const { … } bool AXNodeObject::HasInternalsAttribute(Element& element, const QualifiedName& attribute) const { … } const AtomicString& AXNodeObject::GetInternalsAttribute( Element& element, const QualifiedName& attribute) const { … } bool AXNodeObject::OnNativeBlurAction() { … } bool AXNodeObject::OnNativeFocusAction() { … } bool AXNodeObject::OnNativeIncrementAction() { … } bool AXNodeObject::OnNativeDecrementAction() { … } bool AXNodeObject::OnNativeSetSequentialFocusNavigationStartingPointAction() { … } void AXNodeObject::SelectedOptions(AXObjectVector& options) const { … } // // Notifications that this object may have changed. // void AXNodeObject::HandleAriaExpandedChanged() { … } void AXNodeObject::HandleActiveDescendantChanged() { … } AXObject::AXObjectVector AXNodeObject::ErrorMessage() const { … } AXObject::AXObjectVector AXNodeObject::ErrorMessageFromAria() const { … } AXObject::AXObjectVector AXNodeObject::ErrorMessageFromHTML() const { … } String AXNodeObject::TextAlternativeFromTooltip( ax::mojom::blink::NameFrom& name_from, NameSources* name_sources, bool* found_text_alternative, String* text_alternative, AXRelatedObjectVector* related_objects) const { … } String AXNodeObject::TextAlternativeFromTitleAttribute( const AtomicString& title, ax::mojom::blink::NameFrom& name_from, NameSources* name_sources, bool* found_text_alternative) const { … } // Based on // https://www.w3.org/TR/html-aam-1.0/#accessible-name-and-description-computation String AXNodeObject::NativeTextAlternative( AXObjectSet& visited, ax::mojom::blink::NameFrom& name_from, AXRelatedObjectVector* related_objects, NameSources* name_sources, bool* found_text_alternative) const { … } // static String AXNodeObject::GetSavedTextAlternativeFromNameSource( bool found_text_alternative, ax::mojom::NameFrom& name_from, AXRelatedObjectVector* related_objects, NameSources* name_sources) { … } // This is not part of the spec, but we think it's a worthy addition: if the // labelled input is of type="file", we append the chosen file name to it. We do // this because this type of input is actually exposed as a button, and buttons // may not have a "value" field. An unlabelled input is manager later in this // function, it's named with the default text in the button, 'Choose File', plus // the file name. String AXNodeObject::MaybeAppendFileDescriptionToName( const String& name) const { … } bool AXNodeObject::ShouldIncludeContentInTextAlternative( bool recursive, const AXObject* aria_label_or_description_root, AXObjectSet& visited) const { … } String AXNodeObject::Description( ax::mojom::blink::NameFrom name_from, ax::mojom::blink::DescriptionFrom& description_from, AXObjectVector* description_objects) const { … } // Based on // http://rawgit.com/w3c/aria/master/html-aam/html-aam.html#accessible-name-and-description-calculation String AXNodeObject::Description( ax::mojom::blink::NameFrom name_from, ax::mojom::blink::DescriptionFrom& description_from, DescriptionSources* description_sources, AXRelatedObjectVector* related_objects) const { … } String AXNodeObject::SVGDescription( ax::mojom::blink::NameFrom name_from, ax::mojom::blink::DescriptionFrom& description_from, DescriptionSources* description_sources, AXRelatedObjectVector* related_objects) const { … } String AXNodeObject::Placeholder(ax::mojom::blink::NameFrom name_from) const { … } String AXNodeObject::Title(ax::mojom::blink::NameFrom name_from) const { … } String AXNodeObject::PlaceholderFromNativeAttribute() const { … } String AXNodeObject::GetValueContributionToName(AXObjectSet& visited) const { … } bool AXNodeObject::UseNameFromSelectedOption() const { … } ScrollableArea* AXNodeObject::GetScrollableAreaIfScrollable() const { … } AXObject* AXNodeObject::AccessibilityHitTest(const gfx::Point& point) const { … } AXObject* AXNodeObject::AccessibilityImageMapHitTest( HTMLAreaElement* area, const gfx::Point& point) const { … } AXObject* AXNodeObject::GetFirstInlineBlockOrDeepestInlineAXChildInLayoutTree( AXObject* start_object, bool first) const { … } void AXNodeObject::MaybeResetCache() const { … } void AXNodeObject::GenerationalCache::Trace(Visitor* visitor) const { … } AXObject* AXNodeObject::SetNextOnLine(AXObject* next_on_line) const { … } AXObject* AXNodeObject::SetPreviousOnLine(AXObject* previous_on_line) const { … } AXObject* AXNodeObject::NextOnLine() const { … } AXObject* AXNodeObject::PreviousOnLine() const { … } void AXNodeObject::HandleAutofillSuggestionAvailabilityChanged( WebAXAutofillSuggestionAvailability suggestion_availability) { … } void AXNodeObject::GetWordBoundaries(Vector<int>& word_starts, Vector<int>& word_ends) const { … } void AXNodeObject::Trace(Visitor* visitor) const { … } } // namespace blink
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