Add m-esr52 at 52.6.0

1 files changed, 841 insertions, 0 deletions

diff --git a/accessible/html/HTMLFormControlAccessible.cpp b/accessible/html/HTMLFormControlAccessible.cpp
new file mode 100644
index 000000000..a7b3874a1
--- /dev/null
+++ b/accessible/html/HTMLFormControlAccessible.cpp
@@ -0,0 +1,841 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "HTMLFormControlAccessible.h"
+
+#include "Accessible-inl.h"
+#include "nsAccUtils.h"
+#include "nsEventShell.h"
+#include "nsTextEquivUtils.h"
+#include "Relation.h"
+#include "Role.h"
+#include "States.h"
+
+#include "nsContentList.h"
+#include "mozilla/dom/HTMLInputElement.h"
+#include "nsIDOMNSEditableElement.h"
+#include "nsIDOMHTMLTextAreaElement.h"
+#include "nsIEditor.h"
+#include "nsIFormControl.h"
+#include "nsIPersistentProperties2.h"
+#include "nsISelectionController.h"
+#include "nsIServiceManager.h"
+#include "nsITextControlFrame.h"
+#include "nsNameSpaceManager.h"
+#include "mozilla/dom/ScriptSettings.h"
+
+#include "mozilla/EventStates.h"
+#include "mozilla/FloatingPoint.h"
+#include "mozilla/Preferences.h"
+
+using namespace mozilla;
+using namespace mozilla::dom;
+using namespace mozilla::a11y;
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLCheckboxAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+role
+HTMLCheckboxAccessible::NativeRole()
+{
+  return roles::CHECKBUTTON;
+}
+
+uint8_t
+HTMLCheckboxAccessible::ActionCount()
+{
+  return 1;
+}
+
+void
+HTMLCheckboxAccessible::ActionNameAt(uint8_t aIndex, nsAString& aName)
+{
+  if (aIndex == eAction_Click) {    // 0 is the magic value for default action
+    uint64_t state = NativeState();
+    if (state & states::CHECKED)
+      aName.AssignLiteral("uncheck");
+    else if (state & states::MIXED)
+      aName.AssignLiteral("cycle");
+    else
+      aName.AssignLiteral("check");
+  }
+}
+
+bool
+HTMLCheckboxAccessible::DoAction(uint8_t aIndex)
+{
+  if (aIndex != 0)
+    return false;
+
+  DoCommand();
+  return true;
+}
+
+uint64_t
+HTMLCheckboxAccessible::NativeState()
+{
+  uint64_t state = LeafAccessible::NativeState();
+
+  state |= states::CHECKABLE;
+  HTMLInputElement* input = HTMLInputElement::FromContent(mContent);
+  if (!input)
+    return state;
+
+  if (input->Indeterminate())
+    return state | states::MIXED;
+
+  if (input->Checked())
+    return state | states::CHECKED;
+ 
+  return state;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLCheckboxAccessible: Widgets
+
+bool
+HTMLCheckboxAccessible::IsWidget() const
+{
+  return true;
+}
+
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLRadioButtonAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+uint64_t
+HTMLRadioButtonAccessible::NativeState()
+{
+  uint64_t state = AccessibleWrap::NativeState();
+
+  state |= states::CHECKABLE;
+
+  HTMLInputElement* input = HTMLInputElement::FromContent(mContent);
+  if (input && input->Checked())
+    state |= states::CHECKED;
+
+  return state;
+}
+
+void
+HTMLRadioButtonAccessible::GetPositionAndSizeInternal(int32_t* aPosInSet,
+                                                      int32_t* aSetSize)
+{
+  int32_t namespaceId = mContent->NodeInfo()->NamespaceID();
+  nsAutoString tagName;
+  mContent->NodeInfo()->GetName(tagName);
+
+  nsAutoString type;
+  mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::type, type);
+  nsAutoString name;
+  mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::name, name);
+
+  RefPtr<nsContentList> inputElms;
+
+  nsCOMPtr<nsIFormControl> formControlNode(do_QueryInterface(mContent));
+  dom::Element* formElm = formControlNode->GetFormElement();
+  if (formElm)
+    inputElms = NS_GetContentList(formElm, namespaceId, tagName);
+  else
+    inputElms = NS_GetContentList(mContent->OwnerDoc(), namespaceId, tagName);
+  NS_ENSURE_TRUE_VOID(inputElms);
+
+  uint32_t inputCount = inputElms->Length(false);
+
+  // Compute posinset and setsize.
+  int32_t indexOf = 0;
+  int32_t count = 0;
+
+  for (uint32_t index = 0; index < inputCount; index++) {
+    nsIContent* inputElm = inputElms->Item(index, false);
+    if (inputElm->AttrValueIs(kNameSpaceID_None, nsGkAtoms::type,
+                              type, eCaseMatters) &&
+        inputElm->AttrValueIs(kNameSpaceID_None, nsGkAtoms::name,
+                              name, eCaseMatters) && mDoc->HasAccessible(inputElm)) {
+        count++;
+      if (inputElm == mContent)
+        indexOf = count;
+    }
+  }
+
+  *aPosInSet = indexOf;
+  *aSetSize = count;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLButtonAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+HTMLButtonAccessible::
+  HTMLButtonAccessible(nsIContent* aContent, DocAccessible* aDoc) :
+  HyperTextAccessibleWrap(aContent, aDoc)
+{
+  mGenericTypes |= eButton;
+}
+
+uint8_t
+HTMLButtonAccessible::ActionCount()
+{
+  return 1;
+}
+
+void
+HTMLButtonAccessible::ActionNameAt(uint8_t aIndex, nsAString& aName)
+{
+  if (aIndex == eAction_Click)
+    aName.AssignLiteral("press");
+}
+
+bool
+HTMLButtonAccessible::DoAction(uint8_t aIndex)
+{
+  if (aIndex != eAction_Click)
+    return false;
+
+  DoCommand();
+  return true;
+}
+
+uint64_t
+HTMLButtonAccessible::State()
+{
+  uint64_t state = HyperTextAccessibleWrap::State();
+  if (state == states::DEFUNCT)
+    return state;
+
+  // Inherit states from input@type="file" suitable for the button. Note,
+  // no special processing for unavailable state since inheritance is supplied
+  // other code paths.
+  if (mParent && mParent->IsHTMLFileInput()) {
+    uint64_t parentState = mParent->State();
+    state |= parentState & (states::BUSY | states::REQUIRED |
+                            states::HASPOPUP | states::INVALID);
+  }
+
+  return state;
+}
+
+uint64_t
+HTMLButtonAccessible::NativeState()
+{
+  uint64_t state = HyperTextAccessibleWrap::NativeState();
+
+  EventStates elmState = mContent->AsElement()->State();
+  if (elmState.HasState(NS_EVENT_STATE_DEFAULT))
+    state |= states::DEFAULT;
+
+  return state;
+}
+
+role
+HTMLButtonAccessible::NativeRole()
+{
+  return roles::PUSHBUTTON;
+}
+
+ENameValueFlag
+HTMLButtonAccessible::NativeName(nsString& aName)
+{
+  // No need to check @value attribute for buttons since this attribute results
+  // in native anonymous text node and the name is calculated from subtree.
+  // The same magic works for @alt and @value attributes in case of type="image"
+  // element that has no valid @src (note if input@type="image" has an image
+  // then neither @alt nor @value attributes are used to generate a visual label
+  // and thus we need to obtain the accessible name directly from attribute
+  // value). Also the same algorithm works in case of default labels for
+  // type="submit"/"reset"/"image" elements.
+
+  ENameValueFlag nameFlag = Accessible::NativeName(aName);
+  if (!aName.IsEmpty() || !mContent->IsHTMLElement(nsGkAtoms::input) ||
+      !mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::type,
+                             nsGkAtoms::image, eCaseMatters))
+    return nameFlag;
+
+  if (!mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::alt, aName))
+    mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::value, aName);
+
+  aName.CompressWhitespace();
+  return eNameOK;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLButtonAccessible: Widgets
+
+bool
+HTMLButtonAccessible::IsWidget() const
+{
+  return true;
+}
+
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLTextFieldAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+HTMLTextFieldAccessible::
+  HTMLTextFieldAccessible(nsIContent* aContent, DocAccessible* aDoc) :
+  HyperTextAccessibleWrap(aContent, aDoc)
+{
+  mType = eHTMLTextFieldType;
+}
+
+NS_IMPL_ISUPPORTS_INHERITED0(HTMLTextFieldAccessible,
+                             HyperTextAccessible)
+
+role
+HTMLTextFieldAccessible::NativeRole()
+{
+  if (mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::type,
+                            nsGkAtoms::password, eIgnoreCase)) {
+    return roles::PASSWORD_TEXT;
+  }
+
+  return roles::ENTRY;
+}
+
+already_AddRefed<nsIPersistentProperties>
+HTMLTextFieldAccessible::NativeAttributes()
+{
+  nsCOMPtr<nsIPersistentProperties> attributes =
+    HyperTextAccessibleWrap::NativeAttributes();
+
+  // Expose type for text input elements as it gives some useful context,
+  // especially for mobile.
+  nsAutoString type;
+  if (mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::type, type)) {
+    nsAccUtils::SetAccAttr(attributes, nsGkAtoms::textInputType, type);
+    if (!ARIARoleMap() && type.EqualsLiteral("search")) {
+      nsAccUtils::SetAccAttr(attributes, nsGkAtoms::xmlroles,
+                             NS_LITERAL_STRING("searchbox"));
+    }
+  }
+
+  return attributes.forget();
+}
+
+ENameValueFlag
+HTMLTextFieldAccessible::NativeName(nsString& aName)
+{
+  ENameValueFlag nameFlag = Accessible::NativeName(aName);
+  if (!aName.IsEmpty())
+    return nameFlag;
+
+  // If part of compound of XUL widget then grab a name from XUL widget element.
+  nsIContent* widgetElm = XULWidgetElm();
+  if (widgetElm)
+    XULElmName(mDoc, widgetElm, aName);
+
+  if (!aName.IsEmpty())
+    return eNameOK;
+
+  // text inputs and textareas might have useful placeholder text
+  mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::placeholder, aName);
+  return eNameOK;
+}
+
+void
+HTMLTextFieldAccessible::Value(nsString& aValue)
+{
+  aValue.Truncate();
+  if (NativeState() & states::PROTECTED)    // Don't return password text!
+    return;
+
+  nsCOMPtr<nsIDOMHTMLTextAreaElement> textArea(do_QueryInterface(mContent));
+  if (textArea) {
+    textArea->GetValue(aValue);
+    return;
+  }
+
+  HTMLInputElement* input = HTMLInputElement::FromContent(mContent);
+  if (input)
+    input->GetValue(aValue);
+}
+
+void
+HTMLTextFieldAccessible::ApplyARIAState(uint64_t* aState) const
+{
+  HyperTextAccessibleWrap::ApplyARIAState(aState);
+  aria::MapToState(aria::eARIAAutoComplete, mContent->AsElement(), aState);
+
+  // If part of compound of XUL widget then pick up ARIA stuff from XUL widget
+  // element.
+  nsIContent* widgetElm = XULWidgetElm();
+  if (widgetElm)
+    aria::MapToState(aria::eARIAAutoComplete, widgetElm->AsElement(), aState);
+}
+
+uint64_t
+HTMLTextFieldAccessible::NativeState()
+{
+  uint64_t state = HyperTextAccessibleWrap::NativeState();
+
+  // Text fields are always editable, even if they are also read only or
+  // disabled.
+  state |= states::EDITABLE;
+
+  // can be focusable, focused, protected. readonly, unavailable, selected
+  if (mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::type,
+                            nsGkAtoms::password, eIgnoreCase)) {
+    state |= states::PROTECTED;
+  }
+
+  if (mContent->HasAttr(kNameSpaceID_None, nsGkAtoms::readonly)) {
+    state |= states::READONLY;
+  }
+
+  // Is it an <input> or a <textarea> ?
+  HTMLInputElement* input = HTMLInputElement::FromContent(mContent);
+  state |= input && input->IsSingleLineTextControl() ?
+    states::SINGLE_LINE : states::MULTI_LINE;
+
+  if (state & (states::PROTECTED | states::MULTI_LINE | states::READONLY |
+               states::UNAVAILABLE))
+    return state;
+
+  // Expose autocomplete states if this input is part of autocomplete widget.
+  Accessible* widget = ContainerWidget();
+  if (widget && widget-IsAutoComplete()) {
+    state |= states::HASPOPUP | states::SUPPORTS_AUTOCOMPLETION;
+    return state;
+  }
+
+  // Expose autocomplete state if it has associated autocomplete list.
+  if (mContent->HasAttr(kNameSpaceID_None, nsGkAtoms::list))
+    return state | states::SUPPORTS_AUTOCOMPLETION | states::HASPOPUP;
+
+  // Ordinal XUL textboxes don't support autocomplete.
+  if (!XULWidgetElm() && Preferences::GetBool("browser.formfill.enable")) {
+    // Check to see if autocompletion is allowed on this input. We don't expose
+    // it for password fields even though the entire password can be remembered
+    // for a page if the user asks it to be. However, the kind of autocomplete
+    // we're talking here is based on what the user types, where a popup of
+    // possible choices comes up.
+    nsAutoString autocomplete;
+    mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::autocomplete,
+                      autocomplete);
+
+    if (!autocomplete.LowerCaseEqualsLiteral("off")) {
+      nsIContent* formContent = input->GetFormElement();
+      if (formContent) {
+        formContent->GetAttr(kNameSpaceID_None,
+                             nsGkAtoms::autocomplete, autocomplete);
+      }
+
+      if (!formContent || !autocomplete.LowerCaseEqualsLiteral("off"))
+        state |= states::SUPPORTS_AUTOCOMPLETION;
+    }
+  }
+
+  return state;
+}
+
+uint8_t
+HTMLTextFieldAccessible::ActionCount()
+{
+  return 1;
+}
+
+void
+HTMLTextFieldAccessible::ActionNameAt(uint8_t aIndex, nsAString& aName)
+{
+  if (aIndex == eAction_Click)
+    aName.AssignLiteral("activate");
+}
+
+bool
+HTMLTextFieldAccessible::DoAction(uint8_t aIndex)
+{
+  if (aIndex != 0)
+    return false;
+
+  TakeFocus();
+  return true;
+}
+
+already_AddRefed<nsIEditor>
+HTMLTextFieldAccessible::GetEditor() const
+{
+  nsCOMPtr<nsIDOMNSEditableElement> editableElt(do_QueryInterface(mContent));
+  if (!editableElt)
+    return nullptr;
+
+  // nsGenericHTMLElement::GetEditor has a security check.
+  // Make sure we're not restricted by the permissions of
+  // whatever script is currently running.
+  mozilla::dom::AutoNoJSAPI nojsapi;
+
+  nsCOMPtr<nsIEditor> editor;
+  editableElt->GetEditor(getter_AddRefs(editor));
+
+  return editor.forget();
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLTextFieldAccessible: Widgets
+
+bool
+HTMLTextFieldAccessible::IsWidget() const
+{
+  return true;
+}
+
+Accessible*
+HTMLTextFieldAccessible::ContainerWidget() const
+{
+  if (!mParent || mParent->Role() != roles::AUTOCOMPLETE) {
+    return nullptr;
+  }
+  return mParent;
+}
+
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLFileInputAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+HTMLFileInputAccessible::
+HTMLFileInputAccessible(nsIContent* aContent, DocAccessible* aDoc) :
+  HyperTextAccessibleWrap(aContent, aDoc)
+{
+  mType = eHTMLFileInputType;
+}
+
+role
+HTMLFileInputAccessible::NativeRole()
+{
+  // JAWS wants a text container, others don't mind. No specific role in
+  // AT APIs.
+  return roles::TEXT_CONTAINER;
+}
+
+nsresult
+HTMLFileInputAccessible::HandleAccEvent(AccEvent* aEvent)
+{
+  nsresult rv = HyperTextAccessibleWrap::HandleAccEvent(aEvent);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // Redirect state change events for inherited states to child controls. Note,
+  // unavailable state is not redirected. That's a standard for unavailable
+  // state handling.
+  AccStateChangeEvent* event = downcast_accEvent(aEvent);
+  if (event &&
+      (event->GetState() == states::BUSY ||
+       event->GetState() == states::REQUIRED ||
+       event->GetState() == states::HASPOPUP ||
+       event->GetState() == states::INVALID)) {
+    Accessible* button = GetChildAt(0);
+    if (button && button->Role() == roles::PUSHBUTTON) {
+      RefPtr<AccStateChangeEvent> childEvent =
+        new AccStateChangeEvent(button, event->GetState(),
+                                event->IsStateEnabled(), event->FromUserInput());
+      nsEventShell::FireEvent(childEvent);
+    }
+  }
+
+  return NS_OK;
+}
+
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLSpinnerAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+role
+HTMLSpinnerAccessible::NativeRole()
+{
+  return roles::SPINBUTTON;
+}
+
+void
+HTMLSpinnerAccessible::Value(nsString& aValue)
+{
+  AccessibleWrap::Value(aValue);
+  if (!aValue.IsEmpty())
+    return;
+
+  HTMLInputElement::FromContent(mContent)->GetValue(aValue);
+}
+
+double
+HTMLSpinnerAccessible::MaxValue() const
+{
+  double value = AccessibleWrap::MaxValue();
+  if (!IsNaN(value))
+    return value;
+
+  return HTMLInputElement::FromContent(mContent)->GetMaximum().toDouble();
+}
+
+
+double
+HTMLSpinnerAccessible::MinValue() const
+{
+  double value = AccessibleWrap::MinValue();
+  if (!IsNaN(value))
+    return value;
+
+  return HTMLInputElement::FromContent(mContent)->GetMinimum().toDouble();
+}
+
+double
+HTMLSpinnerAccessible::Step() const
+{
+  double value = AccessibleWrap::Step();
+  if (!IsNaN(value))
+    return value;
+
+  return HTMLInputElement::FromContent(mContent)->GetStep().toDouble();
+}
+
+double
+HTMLSpinnerAccessible::CurValue() const
+{
+  double value = AccessibleWrap::CurValue();
+  if (!IsNaN(value))
+    return value;
+
+  return HTMLInputElement::FromContent(mContent)->GetValueAsDecimal().toDouble();
+}
+
+bool
+HTMLSpinnerAccessible::SetCurValue(double aValue)
+{
+  ErrorResult er;
+  HTMLInputElement::FromContent(mContent)->SetValueAsNumber(aValue, er);
+  return !er.Failed();
+}
+
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLRangeAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+role
+HTMLRangeAccessible::NativeRole()
+{
+  return roles::SLIDER;
+}
+
+bool
+HTMLRangeAccessible::IsWidget() const
+{
+  return true;
+}
+
+void
+HTMLRangeAccessible::Value(nsString& aValue)
+{
+  LeafAccessible::Value(aValue);
+  if (!aValue.IsEmpty())
+    return;
+
+  HTMLInputElement::FromContent(mContent)->GetValue(aValue);
+}
+
+double
+HTMLRangeAccessible::MaxValue() const
+{
+  double value = LeafAccessible::MaxValue();
+  if (!IsNaN(value))
+    return value;
+
+  return HTMLInputElement::FromContent(mContent)->GetMaximum().toDouble();
+}
+
+double
+HTMLRangeAccessible::MinValue() const
+{
+  double value = LeafAccessible::MinValue();
+  if (!IsNaN(value))
+    return value;
+
+  return HTMLInputElement::FromContent(mContent)->GetMinimum().toDouble();
+}
+
+double
+HTMLRangeAccessible::Step() const
+{
+  double value = LeafAccessible::Step();
+  if (!IsNaN(value))
+    return value;
+
+  return HTMLInputElement::FromContent(mContent)->GetStep().toDouble();
+}
+
+double
+HTMLRangeAccessible::CurValue() const
+{
+  double value = LeafAccessible::CurValue();
+  if (!IsNaN(value))
+    return value;
+
+  return HTMLInputElement::FromContent(mContent)->GetValueAsDecimal().toDouble();
+}
+
+bool
+HTMLRangeAccessible::SetCurValue(double aValue)
+{
+  ErrorResult er;
+  HTMLInputElement::FromContent(mContent)->SetValueAsNumber(aValue, er);
+  return !er.Failed();
+}
+
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLGroupboxAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+HTMLGroupboxAccessible::
+  HTMLGroupboxAccessible(nsIContent* aContent, DocAccessible* aDoc) :
+  HyperTextAccessibleWrap(aContent, aDoc)
+{
+}
+
+role
+HTMLGroupboxAccessible::NativeRole()
+{
+  return roles::GROUPING;
+}
+
+nsIContent*
+HTMLGroupboxAccessible::GetLegend() const
+{
+  for (nsIContent* legendContent = mContent->GetFirstChild(); legendContent;
+       legendContent = legendContent->GetNextSibling()) {
+    if (legendContent->NodeInfo()->Equals(nsGkAtoms::legend,
+                                          mContent->GetNameSpaceID())) {
+      // Either XHTML namespace or no namespace
+      return legendContent;
+    }
+  }
+
+  return nullptr;
+}
+
+ENameValueFlag
+HTMLGroupboxAccessible::NativeName(nsString& aName)
+{
+  ENameValueFlag nameFlag = Accessible::NativeName(aName);
+  if (!aName.IsEmpty())
+    return nameFlag;
+
+  nsIContent* legendContent = GetLegend();
+  if (legendContent)
+    nsTextEquivUtils::AppendTextEquivFromContent(this, legendContent, &aName);
+
+  return eNameOK;
+}
+
+Relation
+HTMLGroupboxAccessible::RelationByType(RelationType aType)
+{
+  Relation rel = HyperTextAccessibleWrap::RelationByType(aType);
+    // No override for label, so use <legend> for this <fieldset>
+  if (aType == RelationType::LABELLED_BY)
+    rel.AppendTarget(mDoc, GetLegend());
+
+  return rel;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLLegendAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+HTMLLegendAccessible::
+  HTMLLegendAccessible(nsIContent* aContent, DocAccessible* aDoc) :
+  HyperTextAccessibleWrap(aContent, aDoc)
+{
+}
+
+Relation
+HTMLLegendAccessible::RelationByType(RelationType aType)
+{
+  Relation rel = HyperTextAccessibleWrap::RelationByType(aType);
+  if (aType != RelationType::LABEL_FOR)
+    return rel;
+
+  Accessible* groupbox = Parent();
+  if (groupbox && groupbox->Role() == roles::GROUPING)
+    rel.AppendTarget(groupbox);
+
+  return rel;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLFigureAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+HTMLFigureAccessible::
+  HTMLFigureAccessible(nsIContent* aContent, DocAccessible* aDoc) :
+  HyperTextAccessibleWrap(aContent, aDoc)
+{
+}
+
+ENameValueFlag
+HTMLFigureAccessible::NativeName(nsString& aName)
+{
+  ENameValueFlag nameFlag = HyperTextAccessibleWrap::NativeName(aName);
+  if (!aName.IsEmpty())
+    return nameFlag;
+
+  nsIContent* captionContent = Caption();
+  if (captionContent)
+    nsTextEquivUtils::AppendTextEquivFromContent(this, captionContent, &aName);
+
+  return eNameOK;
+}
+
+Relation
+HTMLFigureAccessible::RelationByType(RelationType aType)
+{
+  Relation rel = HyperTextAccessibleWrap::RelationByType(aType);
+  if (aType == RelationType::LABELLED_BY)
+    rel.AppendTarget(mDoc, Caption());
+
+  return rel;
+}
+
+nsIContent*
+HTMLFigureAccessible::Caption() const
+{
+  for (nsIContent* childContent = mContent->GetFirstChild(); childContent;
+       childContent = childContent->GetNextSibling()) {
+    if (childContent->NodeInfo()->Equals(nsGkAtoms::figcaption,
+                                         mContent->GetNameSpaceID())) {
+      return childContent;
+    }
+  }
+
+  return nullptr;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLFigcaptionAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+HTMLFigcaptionAccessible::
+  HTMLFigcaptionAccessible(nsIContent* aContent, DocAccessible* aDoc) :
+  HyperTextAccessibleWrap(aContent, aDoc)
+{
+}
+
+Relation
+HTMLFigcaptionAccessible::RelationByType(RelationType aType)
+{
+  Relation rel = HyperTextAccessibleWrap::RelationByType(aType);
+  if (aType != RelationType::LABEL_FOR)
+    return rel;
+
+  Accessible* figure = Parent();
+  if (figure &&
+      figure->GetContent()->NodeInfo()->Equals(nsGkAtoms::figure,
+                                               mContent->GetNameSpaceID())) {
+    rel.AppendTarget(figure);
+  }
+
+  return rel;
+}