blob: 471248980a2b57db3c9b856de8d9fa8193344edd [file] [log] [blame]
// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/accessibility/ax_role_properties.h"
#include "build/build_config.h"
#include "ui/accessibility/ax_enums.mojom.h"
namespace ui {
namespace {
#if defined(OS_WIN) || defined(OS_CHROMEOS)
constexpr bool kExposeLayoutTableAsDataTable = true;
#else
constexpr bool kExposeLayoutTableAsDataTable = false;
#endif // defined(OS_WIN)
} // namespace
bool HasPresentationalChildren(const ax::mojom::Role role) {
// See http://www.w3.org/TR/core-aam-1.1/#exclude_elements2.
if (IsImage(role))
return true;
switch (role) {
case ax::mojom::Role::kButton:
case ax::mojom::Role::kCheckBox:
case ax::mojom::Role::kMath:
case ax::mojom::Role::kMenuItemCheckBox:
case ax::mojom::Role::kMenuItemRadio:
case ax::mojom::Role::kMenuListOption:
case ax::mojom::Role::kProgressIndicator:
case ax::mojom::Role::kScrollBar:
case ax::mojom::Role::kSlider:
case ax::mojom::Role::kSwitch:
case ax::mojom::Role::kTab:
return true;
default:
return false;
}
}
bool IsAlert(const ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kAlert:
case ax::mojom::Role::kAlertDialog:
return true;
default:
return false;
}
}
bool IsButton(const ax::mojom::Role role) {
// According to the WAI-ARIA spec, native button or role="button"
// supports |aria-expanded| and |aria-pressed|.
// If the button has |aria-expanded| set, then it takes on
// Role::kPopUpButton.
// If the button has |aria-pressed| set, then it takes on
// Role::kToggleButton.
// https://www.w3.org/TR/wai-aria-1.1/#button
return role == ax::mojom::Role::kButton ||
role == ax::mojom::Role::kPopUpButton ||
role == ax::mojom::Role::kToggleButton;
}
bool IsClickable(const ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kButton:
case ax::mojom::Role::kCheckBox:
case ax::mojom::Role::kColorWell:
case ax::mojom::Role::kComboBoxMenuButton:
case ax::mojom::Role::kDate:
case ax::mojom::Role::kDateTime:
case ax::mojom::Role::kDisclosureTriangle:
case ax::mojom::Role::kDocBackLink:
case ax::mojom::Role::kDocBiblioRef:
case ax::mojom::Role::kDocGlossRef:
case ax::mojom::Role::kDocNoteRef:
case ax::mojom::Role::kImeCandidate:
case ax::mojom::Role::kInputTime:
case ax::mojom::Role::kLink:
case ax::mojom::Role::kListBox:
case ax::mojom::Role::kListBoxOption:
case ax::mojom::Role::kMenuItem:
case ax::mojom::Role::kMenuItemCheckBox:
case ax::mojom::Role::kMenuItemRadio:
case ax::mojom::Role::kMenuListOption:
case ax::mojom::Role::kPdfActionableHighlight:
case ax::mojom::Role::kPopUpButton:
case ax::mojom::Role::kPortal:
case ax::mojom::Role::kRadioButton:
case ax::mojom::Role::kSearchBox:
case ax::mojom::Role::kSpinButton:
case ax::mojom::Role::kSwitch:
case ax::mojom::Role::kTab:
case ax::mojom::Role::kTextField:
case ax::mojom::Role::kTextFieldWithComboBox:
// kTree and related roles are not included because they are not natively
// supported by HTML and so their "clickable" behavior is uncertain.
case ax::mojom::Role::kToggleButton:
return true;
default:
return false;
}
}
bool IsCellOrTableHeader(const ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kCell:
case ax::mojom::Role::kColumnHeader:
case ax::mojom::Role::kRowHeader:
return true;
case ax::mojom::Role::kLayoutTableCell:
return kExposeLayoutTableAsDataTable;
default:
return false;
}
}
bool IsContainerWithSelectableChildren(const ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kComboBoxGrouping:
case ax::mojom::Role::kComboBoxMenuButton:
case ax::mojom::Role::kGrid:
case ax::mojom::Role::kListBox:
case ax::mojom::Role::kListGrid:
case ax::mojom::Role::kMenu:
case ax::mojom::Role::kMenuBar:
case ax::mojom::Role::kMenuListPopup:
case ax::mojom::Role::kRadioGroup:
case ax::mojom::Role::kTabList:
case ax::mojom::Role::kToolbar:
case ax::mojom::Role::kTree:
case ax::mojom::Role::kTreeGrid:
return true;
default:
return false;
}
}
bool IsControl(const ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kButton:
case ax::mojom::Role::kCheckBox:
case ax::mojom::Role::kColorWell:
case ax::mojom::Role::kComboBoxMenuButton:
case ax::mojom::Role::kDate:
case ax::mojom::Role::kDateTime:
case ax::mojom::Role::kDisclosureTriangle:
case ax::mojom::Role::kInputTime:
case ax::mojom::Role::kListBox:
case ax::mojom::Role::kListGrid:
case ax::mojom::Role::kMenuItem:
case ax::mojom::Role::kMenuItemCheckBox:
case ax::mojom::Role::kMenuItemRadio:
case ax::mojom::Role::kMenuListOption:
case ax::mojom::Role::kPdfActionableHighlight:
case ax::mojom::Role::kPopUpButton:
case ax::mojom::Role::kRadioButton:
case ax::mojom::Role::kScrollBar:
case ax::mojom::Role::kSearchBox:
case ax::mojom::Role::kSlider:
case ax::mojom::Role::kSpinButton:
case ax::mojom::Role::kSwitch:
case ax::mojom::Role::kTab:
case ax::mojom::Role::kTextField:
case ax::mojom::Role::kTextFieldWithComboBox:
case ax::mojom::Role::kToggleButton:
case ax::mojom::Role::kTree:
case ax::mojom::Role::kTreeGrid:
case ax::mojom::Role::kTreeItem:
return true;
default:
return false;
}
}
bool IsControlOnAndroid(const ax::mojom::Role role, bool isFocusable) {
switch (role) {
case ax::mojom::Role::kSplitter:
return isFocusable;
case ax::mojom::Role::kTreeItem:
case ax::mojom::Role::kDate:
case ax::mojom::Role::kDateTime:
case ax::mojom::Role::kInputTime:
case ax::mojom::Role::kDocBackLink:
case ax::mojom::Role::kDocBiblioRef:
case ax::mojom::Role::kDocGlossRef:
case ax::mojom::Role::kDocNoteRef:
case ax::mojom::Role::kLink:
return true;
case ax::mojom::Role::kMenu:
case ax::mojom::Role::kMenuBar:
case ax::mojom::Role::kNone:
case ax::mojom::Role::kUnknown:
case ax::mojom::Role::kTree:
case ax::mojom::Role::kDialog:
case ax::mojom::Role::kAlert:
return false;
default:
return IsControl(role);
}
}
bool IsDocument(const ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kDocument:
case ax::mojom::Role::kRootWebArea:
case ax::mojom::Role::kWebArea:
return true;
default:
return false;
}
}
bool IsDialog(const ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kAlertDialog:
case ax::mojom::Role::kDialog:
return true;
default:
return false;
}
}
bool IsForm(const ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kForm:
return true;
default:
return false;
}
}
bool IsFormatBoundary(const ax::mojom::Role role) {
return IsControl(role) || IsHeading(role) || IsImageOrVideo(role);
}
bool IsHeading(const ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kHeading:
case ax::mojom::Role::kDocSubtitle:
return true;
default:
return false;
}
}
bool IsHeadingOrTableHeader(const ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kColumnHeader:
case ax::mojom::Role::kDocSubtitle:
case ax::mojom::Role::kHeading:
case ax::mojom::Role::kRowHeader:
return true;
default:
return false;
}
}
bool IsIframe(ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kIframe:
case ax::mojom::Role::kIframePresentational:
return true;
default:
return false;
}
}
bool IsImageOrVideo(const ax::mojom::Role role) {
return IsImage(role) || role == ax::mojom::Role::kVideo;
}
bool IsImage(const ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kCanvas:
case ax::mojom::Role::kDocCover:
case ax::mojom::Role::kGraphicsSymbol:
case ax::mojom::Role::kImage:
case ax::mojom::Role::kImageMap:
case ax::mojom::Role::kSvgRoot:
return true;
default:
return false;
}
}
bool IsItemLike(const ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kArticle:
case ax::mojom::Role::kComment:
case ax::mojom::Role::kListItem:
case ax::mojom::Role::kMenuItem:
case ax::mojom::Role::kMenuItemRadio:
case ax::mojom::Role::kTab:
case ax::mojom::Role::kMenuItemCheckBox:
case ax::mojom::Role::kTreeItem:
case ax::mojom::Role::kListBoxOption:
case ax::mojom::Role::kMenuListOption:
case ax::mojom::Role::kRadioButton:
case ax::mojom::Role::kDescriptionListTerm:
case ax::mojom::Role::kTerm:
return true;
default:
return false;
}
}
bool IsLandmark(const ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kBanner:
case ax::mojom::Role::kComplementary:
case ax::mojom::Role::kContentInfo:
case ax::mojom::Role::kForm:
case ax::mojom::Role::kMain:
case ax::mojom::Role::kNavigation:
case ax::mojom::Role::kRegion:
case ax::mojom::Role::kSearch:
return true;
default:
return false;
}
}
bool IsLink(const ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kDocBackLink:
case ax::mojom::Role::kDocBiblioRef:
case ax::mojom::Role::kDocGlossRef:
case ax::mojom::Role::kDocNoteRef:
case ax::mojom::Role::kLink:
return true;
default:
return false;
}
}
bool IsList(const ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kDescriptionList:
case ax::mojom::Role::kDirectory:
case ax::mojom::Role::kDocBibliography:
case ax::mojom::Role::kList:
case ax::mojom::Role::kListBox:
case ax::mojom::Role::kListGrid:
return true;
default:
return false;
}
}
bool IsListItem(const ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kDescriptionListTerm:
case ax::mojom::Role::kDocBiblioEntry:
case ax::mojom::Role::kDocEndnote:
case ax::mojom::Role::kListBoxOption:
case ax::mojom::Role::kListItem:
case ax::mojom::Role::kTerm:
return true;
default:
return false;
}
}
bool IsMenuItem(ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kMenuItem:
case ax::mojom::Role::kMenuItemCheckBox:
case ax::mojom::Role::kMenuItemRadio:
return true;
default:
return false;
}
}
bool IsMenuRelated(const ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kMenu:
case ax::mojom::Role::kMenuBar:
case ax::mojom::Role::kMenuItem:
case ax::mojom::Role::kMenuItemCheckBox:
case ax::mojom::Role::kMenuItemRadio:
case ax::mojom::Role::kMenuListOption:
case ax::mojom::Role::kMenuListPopup:
return true;
default:
return false;
}
}
bool IsPresentational(const ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kNone:
case ax::mojom::Role::kPresentational:
return true;
default:
return false;
}
}
bool IsRadio(const ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kRadioButton:
case ax::mojom::Role::kMenuItemRadio:
return true;
default:
return false;
}
}
bool IsRangeValueSupported(const ax::mojom::Role role) {
// https://www.w3.org/TR/wai-aria-1.1/#aria-valuenow
// https://www.w3.org/TR/wai-aria-1.1/#aria-valuetext
// Roles that support aria-valuetext / aria-valuenow
switch (role) {
case ax::mojom::Role::kMeter:
case ax::mojom::Role::kProgressIndicator:
case ax::mojom::Role::kScrollBar:
case ax::mojom::Role::kSlider:
case ax::mojom::Role::kSpinButton:
case ax::mojom::Role::kSplitter:
return true;
default:
return false;
}
}
bool IsReadOnlySupported(const ax::mojom::Role role) {
// https://www.w3.org/TR/wai-aria-1.1/#aria-readonly
// Roles that support aria-readonly
switch (role) {
case ax::mojom::Role::kCheckBox:
case ax::mojom::Role::kColorWell:
case ax::mojom::Role::kComboBoxGrouping:
case ax::mojom::Role::kComboBoxMenuButton:
case ax::mojom::Role::kDate:
case ax::mojom::Role::kDateTime:
case ax::mojom::Role::kGrid:
case ax::mojom::Role::kInputTime:
case ax::mojom::Role::kListBox:
case ax::mojom::Role::kMenuItemCheckBox:
case ax::mojom::Role::kMenuItemRadio:
case ax::mojom::Role::kMenuListPopup:
case ax::mojom::Role::kPopUpButton:
case ax::mojom::Role::kRadioButton:
case ax::mojom::Role::kRadioGroup:
case ax::mojom::Role::kSearchBox:
case ax::mojom::Role::kSlider:
case ax::mojom::Role::kSpinButton:
case ax::mojom::Role::kSwitch:
case ax::mojom::Role::kTextField:
case ax::mojom::Role::kTextFieldWithComboBox:
case ax::mojom::Role::kToggleButton:
case ax::mojom::Role::kTreeGrid:
return true;
// https://www.w3.org/TR/wai-aria-1.1/#aria-readonly
// ARIA-1.1+ 'gridcell', supports aria-readonly, but 'cell' does not.
//
// https://www.w3.org/TR/wai-aria-1.1/#columnheader
// https://www.w3.org/TR/wai-aria-1.1/#rowheader
// While the [columnheader|rowheader] role can be used in both interactive
// grids and non-interactive tables, the use of aria-readonly and
// aria-required is only applicable to interactive elements.
// Therefore, [...] user agents SHOULD NOT expose either property to
// assistive technologies unless the columnheader descends from a grid.
case ax::mojom::Role::kCell:
case ax::mojom::Role::kRowHeader:
case ax::mojom::Role::kColumnHeader:
return false;
default:
return false;
}
}
bool IsRowContainer(const ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kGrid:
case ax::mojom::Role::kListGrid:
case ax::mojom::Role::kTable:
case ax::mojom::Role::kTree:
case ax::mojom::Role::kTreeGrid:
return true;
case ax::mojom::Role::kLayoutTable:
return kExposeLayoutTableAsDataTable;
default:
return false;
}
}
bool IsSection(const ax::mojom::Role role) {
if (IsLandmark(role) || IsSelect(role))
return true;
switch (role) {
case ax::mojom::Role::kAlert:
case ax::mojom::Role::kAlertDialog: // Subclass of kAlert.
case ax::mojom::Role::kCell:
case ax::mojom::Role::kColumnHeader: // Subclass of kCell.
case ax::mojom::Role::kDefinition:
case ax::mojom::Role::kDirectory: // Subclass of kList.
case ax::mojom::Role::kFeed: // Subclass of kList.
case ax::mojom::Role::kFigure:
case ax::mojom::Role::kGrid: // Subclass of kTable.
case ax::mojom::Role::kGroup:
case ax::mojom::Role::kImage:
case ax::mojom::Role::kList:
case ax::mojom::Role::kListItem:
case ax::mojom::Role::kLog:
case ax::mojom::Role::kMarquee:
case ax::mojom::Role::kMath:
case ax::mojom::Role::kNote:
case ax::mojom::Role::kProgressIndicator: // Subclass of kStatus.
case ax::mojom::Role::kRow: // Subclass of kGroup.
case ax::mojom::Role::kRowHeader: // Subclass of kCell.
case ax::mojom::Role::kSection:
case ax::mojom::Role::kStatus:
case ax::mojom::Role::kTable:
case ax::mojom::Role::kTabPanel:
case ax::mojom::Role::kTerm:
case ax::mojom::Role::kTimer: // Subclass of kStatus.
case ax::mojom::Role::kToolbar: // Subclass of kGroup.
case ax::mojom::Role::kTooltip:
case ax::mojom::Role::kTreeItem: // Subclass of kListItem.
return true;
default:
return false;
}
}
bool IsSectionhead(const ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kColumnHeader:
case ax::mojom::Role::kHeading:
case ax::mojom::Role::kRowHeader:
case ax::mojom::Role::kTab:
return true;
default:
return false;
}
}
bool IsSelect(const ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kComboBoxGrouping:
case ax::mojom::Role::kListBox:
case ax::mojom::Role::kMenu:
case ax::mojom::Role::kMenuBar: // Subclass of kMenu.
case ax::mojom::Role::kRadioGroup:
case ax::mojom::Role::kTree:
case ax::mojom::Role::kTreeGrid: // Subclass of kTree.
return true;
default:
return false;
}
}
bool IsSelectElement(const ax::mojom::Role role) {
// Depending on their "size" attribute, <select> elements come in two flavors:
// the first appears like a list box and the second like a popup menu.
switch (role) {
case ax::mojom::Role::kListBox:
case ax::mojom::Role::kPopUpButton:
return true;
default:
return false;
}
}
bool IsSetLike(const ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kDescriptionList:
case ax::mojom::Role::kDirectory:
case ax::mojom::Role::kDocBibliography:
case ax::mojom::Role::kFeed:
case ax::mojom::Role::kGroup:
case ax::mojom::Role::kList:
case ax::mojom::Role::kListBox:
case ax::mojom::Role::kListGrid:
case ax::mojom::Role::kMenu:
case ax::mojom::Role::kMenuBar:
case ax::mojom::Role::kMenuListPopup:
case ax::mojom::Role::kPopUpButton:
case ax::mojom::Role::kRadioGroup:
case ax::mojom::Role::kTabList:
case ax::mojom::Role::kTree:
return true;
default:
return false;
}
}
bool IsStaticList(const ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kList:
case ax::mojom::Role::kDescriptionList:
return true;
default:
return false;
}
}
bool IsStructure(const ax::mojom::Role role) {
if (IsSection(role) || IsSectionhead(role))
return true;
switch (role) {
case ax::mojom::Role::kApplication:
case ax::mojom::Role::kDocument:
case ax::mojom::Role::kArticle: // Subclass of kDocument.
case ax::mojom::Role::kPresentational:
case ax::mojom::Role::kRowGroup:
case ax::mojom::Role::kSplitter:
// Dpub roles.
case ax::mojom::Role::kDocAbstract:
case ax::mojom::Role::kDocAcknowledgments:
case ax::mojom::Role::kDocAfterword:
case ax::mojom::Role::kDocAppendix:
case ax::mojom::Role::kDocBiblioEntry:
case ax::mojom::Role::kDocBibliography:
case ax::mojom::Role::kDocChapter:
case ax::mojom::Role::kDocColophon:
case ax::mojom::Role::kDocConclusion:
case ax::mojom::Role::kDocCover:
case ax::mojom::Role::kDocCredit:
case ax::mojom::Role::kDocCredits:
case ax::mojom::Role::kDocDedication:
case ax::mojom::Role::kDocEndnote:
case ax::mojom::Role::kDocEndnotes:
case ax::mojom::Role::kDocEpigraph:
case ax::mojom::Role::kDocEpilogue:
case ax::mojom::Role::kDocErrata:
case ax::mojom::Role::kDocExample:
case ax::mojom::Role::kDocFootnote:
case ax::mojom::Role::kDocForeword:
case ax::mojom::Role::kDocGlossary:
case ax::mojom::Role::kDocIndex:
case ax::mojom::Role::kDocIntroduction:
case ax::mojom::Role::kDocNotice:
case ax::mojom::Role::kDocPageBreak:
case ax::mojom::Role::kDocPageList:
case ax::mojom::Role::kDocPart:
case ax::mojom::Role::kDocPreface:
case ax::mojom::Role::kDocPrologue:
case ax::mojom::Role::kDocQna:
case ax::mojom::Role::kDocSubtitle:
case ax::mojom::Role::kDocTip:
case ax::mojom::Role::kDocToc:
return true;
default:
return false;
}
}
bool IsTableColumn(ax::mojom::Role role) {
return role == ax::mojom::Role::kColumn;
}
bool IsTableHeader(ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kColumnHeader:
case ax::mojom::Role::kRowHeader:
return true;
default:
return false;
}
}
bool IsTableLike(const ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kGrid:
case ax::mojom::Role::kListGrid:
case ax::mojom::Role::kTable:
case ax::mojom::Role::kTreeGrid:
return true;
case ax::mojom::Role::kLayoutTable:
return kExposeLayoutTableAsDataTable;
default:
return false;
}
}
bool IsTableRow(ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kRow:
return true;
case ax::mojom::Role::kLayoutTableRow:
return kExposeLayoutTableAsDataTable;
default:
return false;
}
}
bool IsText(ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kInlineTextBox:
case ax::mojom::Role::kLineBreak:
case ax::mojom::Role::kStaticText:
return true;
default:
return false;
}
}
bool ShouldHaveReadonlyStateByDefault(const ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kArticle:
case ax::mojom::Role::kDefinition:
case ax::mojom::Role::kDescriptionList:
case ax::mojom::Role::kDescriptionListTerm:
case ax::mojom::Role::kDocument:
case ax::mojom::Role::kGraphicsDocument:
case ax::mojom::Role::kImage:
case ax::mojom::Role::kImageMap:
case ax::mojom::Role::kList:
case ax::mojom::Role::kListItem:
case ax::mojom::Role::kProgressIndicator:
case ax::mojom::Role::kRootWebArea:
case ax::mojom::Role::kTerm:
case ax::mojom::Role::kTimer:
case ax::mojom::Role::kToolbar:
case ax::mojom::Role::kTooltip:
case ax::mojom::Role::kWebArea:
return true;
case ax::mojom::Role::kGrid:
// TODO(aleventhal) this changed between ARIA 1.0 and 1.1,
// need to determine whether grids/treegrids should really be readonly
// or editable by default
break;
default:
break;
}
return false;
}
bool SupportsExpandCollapse(const ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kComboBoxGrouping:
case ax::mojom::Role::kComboBoxMenuButton:
case ax::mojom::Role::kDisclosureTriangle:
case ax::mojom::Role::kTextFieldWithComboBox:
case ax::mojom::Role::kTreeItem:
return true;
default:
return false;
}
}
bool SupportsHierarchicalLevel(const ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kComment:
case ax::mojom::Role::kListItem:
case ax::mojom::Role::kRow:
case ax::mojom::Role::kTabList:
case ax::mojom::Role::kTreeItem:
return true;
default:
return false;
}
}
bool SupportsOrientation(const ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kComboBoxGrouping:
case ax::mojom::Role::kComboBoxMenuButton:
case ax::mojom::Role::kListBox:
case ax::mojom::Role::kMenu:
case ax::mojom::Role::kMenuBar:
case ax::mojom::Role::kRadioGroup:
case ax::mojom::Role::kScrollBar:
case ax::mojom::Role::kSlider:
case ax::mojom::Role::kSplitter:
case ax::mojom::Role::kTabList:
case ax::mojom::Role::kToolbar:
case ax::mojom::Role::kTreeGrid:
case ax::mojom::Role::kTree:
return true;
default:
return false;
}
}
bool SupportsSelected(const ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kCell:
case ax::mojom::Role::kColumnHeader:
case ax::mojom::Role::kListBoxOption:
case ax::mojom::Role::kMenuListOption:
case ax::mojom::Role::kRow:
case ax::mojom::Role::kRowHeader:
case ax::mojom::Role::kTab:
case ax::mojom::Role::kTreeItem:
return true;
default:
return false;
}
}
bool SupportsToggle(const ax::mojom::Role role) {
switch (role) {
case ax::mojom::Role::kCheckBox:
case ax::mojom::Role::kMenuItemCheckBox:
case ax::mojom::Role::kSwitch:
case ax::mojom::Role::kToggleButton:
return true;
default:
return false;
}
}
} // namespace ui