Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 979 insertions, 0 deletions

diff --git a/accessible/html/HTMLFormControlAccessible.cpp b/accessible/html/HTMLFormControlAccessible.cpp
new file mode 100644
index 0000000000..95d6fed7b3
--- /dev/null
+++ b/accessible/html/HTMLFormControlAccessible.cpp
@@ -0,0 +1,979 @@
+/* -*- 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 "CacheConstants.h"
+#include "DocAccessible-inl.h"
+#include "LocalAccessible-inl.h"
+#include "nsAccUtils.h"
+#include "nsEventShell.h"
+#include "nsTextEquivUtils.h"
+#include "Relation.h"
+#include "mozilla/a11y/Role.h"
+#include "States.h"
+#include "TextLeafAccessible.h"
+
+#include "nsContentList.h"
+#include "mozilla/dom/HTMLInputElement.h"
+#include "mozilla/dom/HTMLTextAreaElement.h"
+#include "mozilla/dom/HTMLFormControlsCollection.h"
+#include "nsIFormControl.h"
+
+#include "mozilla/FloatingPoint.h"
+#include "mozilla/Preferences.h"
+#include "mozilla/TextEditor.h"
+
+using namespace mozilla;
+using namespace mozilla::dom;
+using namespace mozilla::a11y;
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLFormAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+role HTMLFormAccessible::NativeRole() const {
+  nsAutoString name;
+  const_cast<HTMLFormAccessible*>(this)->Name(name);
+  return name.IsEmpty() ? roles::FORM : roles::FORM_LANDMARK;
+}
+
+void HTMLFormAccessible::DOMAttributeChanged(int32_t aNameSpaceID,
+                                             nsAtom* aAttribute,
+                                             int32_t aModType,
+                                             const nsAttrValue* aOldValue,
+                                             uint64_t aOldState) {
+  HyperTextAccessible::DOMAttributeChanged(aNameSpaceID, aAttribute, aModType,
+                                           aOldValue, aOldState);
+  if (aAttribute == nsGkAtoms::autocomplete) {
+    dom::HTMLFormElement* formEl = dom::HTMLFormElement::FromNode(mContent);
+
+    HTMLFormControlsCollection* controls = formEl->Elements();
+    uint32_t length = controls->Length();
+    for (uint32_t i = 0; i < length; i++) {
+      if (LocalAccessible* acc = mDoc->GetAccessible(controls->Item(i))) {
+        if (acc->IsTextField() && !acc->IsPassword()) {
+          if (!acc->Elm()->HasAttr(nsGkAtoms::list_) &&
+              !acc->Elm()->AttrValueIs(kNameSpaceID_None,
+                                       nsGkAtoms::autocomplete, nsGkAtoms::OFF,
+                                       eIgnoreCase)) {
+            RefPtr<AccEvent> stateChangeEvent =
+                new AccStateChangeEvent(acc, states::SUPPORTS_AUTOCOMPLETION);
+            mDoc->FireDelayedEvent(stateChangeEvent);
+          }
+        }
+      }
+    }
+  }
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLRadioButtonAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+uint64_t HTMLRadioButtonAccessible::NativeState() const {
+  uint64_t state = AccessibleWrap::NativeState();
+
+  state |= states::CHECKABLE;
+
+  HTMLInputElement* input = HTMLInputElement::FromNode(mContent);
+  if (input && input->Checked()) state |= states::CHECKED;
+
+  return state;
+}
+
+void HTMLRadioButtonAccessible::GetPositionAndSetSize(int32_t* aPosInSet,
+                                                      int32_t* aSetSize) {
+  Unused << ComputeGroupAttributes(aPosInSet, aSetSize);
+}
+
+void HTMLRadioButtonAccessible::DOMAttributeChanged(
+    int32_t aNameSpaceID, nsAtom* aAttribute, int32_t aModType,
+    const nsAttrValue* aOldValue, uint64_t aOldState) {
+  if (aAttribute == nsGkAtoms::name) {
+    // If our name changed, it's possible our MEMBER_OF relation
+    // also changed. Push a cache update for Relations.
+    mDoc->QueueCacheUpdate(this, CacheDomain::Relations);
+  } else {
+    // Otherwise, handle this attribute change the way our parent
+    // class wants us to handle it.
+    RadioButtonAccessible::DOMAttributeChanged(aNameSpaceID, aAttribute,
+                                               aModType, aOldValue, aOldState);
+  }
+}
+
+Relation HTMLRadioButtonAccessible::ComputeGroupAttributes(
+    int32_t* aPosInSet, int32_t* aSetSize) const {
+  Relation rel = Relation();
+  int32_t namespaceId = mContent->NodeInfo()->NamespaceID();
+  nsAutoString tagName;
+  mContent->NodeInfo()->GetName(tagName);
+
+  nsAutoString type;
+  mContent->AsElement()->GetAttr(nsGkAtoms::type, type);
+  nsAutoString name;
+  mContent->AsElement()->GetAttr(nsGkAtoms::name, name);
+
+  RefPtr<nsContentList> inputElms;
+
+  nsCOMPtr<nsIFormControl> formControlNode(do_QueryInterface(mContent));
+  if (dom::Element* formElm = formControlNode->GetForm()) {
+    inputElms = NS_GetContentList(formElm, namespaceId, tagName);
+  } else {
+    inputElms = NS_GetContentList(mContent->OwnerDoc(), namespaceId, tagName);
+  }
+  NS_ENSURE_TRUE(inputElms, rel);
+
+  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->AsElement()->AttrValueIs(kNameSpaceID_None, nsGkAtoms::type,
+                                           type, eCaseMatters) &&
+        inputElm->AsElement()->AttrValueIs(kNameSpaceID_None, nsGkAtoms::name,
+                                           name, eCaseMatters) &&
+        mDoc->HasAccessible(inputElm)) {
+      count++;
+      rel.AppendTarget(mDoc->GetAccessible(inputElm));
+      if (inputElm == mContent) indexOf = count;
+    }
+  }
+
+  *aPosInSet = indexOf;
+  *aSetSize = count;
+  return rel;
+}
+
+Relation HTMLRadioButtonAccessible::RelationByType(RelationType aType) const {
+  if (aType == RelationType::MEMBER_OF) {
+    int32_t unusedPos, unusedSetSize;
+    return ComputeGroupAttributes(&unusedPos, &unusedSetSize);
+  }
+
+  return LocalAccessible::RelationByType(aType);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLButtonAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+HTMLButtonAccessible::HTMLButtonAccessible(nsIContent* aContent,
+                                           DocAccessible* aDoc)
+    : HyperTextAccessible(aContent, aDoc) {
+  mGenericTypes |= eButton;
+}
+
+bool HTMLButtonAccessible::HasPrimaryAction() const { return true; }
+
+void HTMLButtonAccessible::ActionNameAt(uint8_t aIndex, nsAString& aName) {
+  if (aIndex == eAction_Click) aName.AssignLiteral("press");
+}
+
+uint64_t HTMLButtonAccessible::NativeState() const {
+  uint64_t state = HyperTextAccessible::NativeState();
+
+  dom::Element* elm = Elm();
+  if (auto* popover = elm->GetEffectivePopoverTargetElement()) {
+    LocalAccessible* popoverAcc = mDoc->GetAccessible(popover);
+    if (!popoverAcc || !popoverAcc->IsAncestorOf(this)) {
+      if (popover->IsPopoverOpen()) {
+        state |= states::EXPANDED;
+      } else {
+        state |= states::COLLAPSED;
+      }
+    }
+  }
+
+  ElementState elmState = mContent->AsElement()->State();
+  if (elmState.HasState(ElementState::DEFAULT)) state |= states::DEFAULT;
+
+  return state;
+}
+
+role HTMLButtonAccessible::NativeRole() const { return roles::PUSHBUTTON; }
+
+ENameValueFlag HTMLButtonAccessible::NativeName(nsString& aName) const {
+  // 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 = LocalAccessible::NativeName(aName);
+  if (!aName.IsEmpty() || !mContent->IsHTMLElement(nsGkAtoms::input) ||
+      !mContent->AsElement()->AttrValueIs(kNameSpaceID_None, nsGkAtoms::type,
+                                          nsGkAtoms::image, eCaseMatters)) {
+    return nameFlag;
+  }
+
+  if (!mContent->AsElement()->GetAttr(nsGkAtoms::alt, aName)) {
+    mContent->AsElement()->GetAttr(nsGkAtoms::value, aName);
+  }
+
+  aName.CompressWhitespace();
+  return eNameOK;
+}
+
+void HTMLButtonAccessible::DOMAttributeChanged(int32_t aNameSpaceID,
+                                               nsAtom* aAttribute,
+                                               int32_t aModType,
+                                               const nsAttrValue* aOldValue,
+                                               uint64_t aOldState) {
+  HyperTextAccessible::DOMAttributeChanged(aNameSpaceID, aAttribute, aModType,
+                                           aOldValue, aOldState);
+
+  if (aAttribute == nsGkAtoms::value) {
+    dom::Element* elm = Elm();
+    if (elm->IsHTMLElement(nsGkAtoms::input) ||
+        (elm->AttrValueIs(kNameSpaceID_None, nsGkAtoms::type, nsGkAtoms::image,
+                          eCaseMatters) &&
+         !elm->HasAttr(nsGkAtoms::alt))) {
+      if (!nsAccUtils::HasARIAAttr(elm, nsGkAtoms::aria_labelledby) &&
+          !nsAccUtils::HasARIAAttr(elm, nsGkAtoms::aria_label)) {
+        mDoc->FireDelayedEvent(nsIAccessibleEvent::EVENT_NAME_CHANGE, this);
+      }
+    }
+  }
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLButtonAccessible: Widgets
+
+bool HTMLButtonAccessible::IsWidget() const { return true; }
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLTextFieldAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+HTMLTextFieldAccessible::HTMLTextFieldAccessible(nsIContent* aContent,
+                                                 DocAccessible* aDoc)
+    : HyperTextAccessible(aContent, aDoc) {
+  mType = mContent->AsElement()->AttrValueIs(kNameSpaceID_None, nsGkAtoms::type,
+                                             nsGkAtoms::password, eIgnoreCase)
+              ? eHTMLTextPasswordFieldType
+              : eHTMLTextFieldType;
+}
+
+role HTMLTextFieldAccessible::NativeRole() const {
+  if (mType == eHTMLTextPasswordFieldType) {
+    return roles::PASSWORD_TEXT;
+  }
+  if (mContent->AsElement()->HasAttr(nsGkAtoms::list_)) {
+    return roles::EDITCOMBOBOX;
+  }
+  return roles::ENTRY;
+}
+
+already_AddRefed<AccAttributes> HTMLTextFieldAccessible::NativeAttributes() {
+  RefPtr<AccAttributes> attributes = HyperTextAccessible::NativeAttributes();
+
+  // Expose type for text input elements as it gives some useful context,
+  // especially for mobile.
+  if (const nsAttrValue* attr =
+          mContent->AsElement()->GetParsedAttr(nsGkAtoms::type)) {
+    RefPtr<nsAtom> inputType = attr->GetAsAtom();
+    if (inputType) {
+      if (!ARIARoleMap() && inputType == nsGkAtoms::search) {
+        attributes->SetAttribute(nsGkAtoms::xmlroles, nsGkAtoms::searchbox);
+      }
+      attributes->SetAttribute(nsGkAtoms::textInputType, inputType);
+    }
+  }
+  // If this element  has the placeholder attribute set,
+  // and if that is not identical to the name, expose it as an object attribute.
+  nsString placeholderText;
+  if (mContent->AsElement()->GetAttr(nsGkAtoms::placeholder, placeholderText)) {
+    nsAutoString name;
+    const_cast<HTMLTextFieldAccessible*>(this)->Name(name);
+    if (!name.Equals(placeholderText)) {
+      attributes->SetAttribute(nsGkAtoms::placeholder,
+                               std::move(placeholderText));
+    }
+  }
+
+  return attributes.forget();
+}
+
+ENameValueFlag HTMLTextFieldAccessible::Name(nsString& aName) const {
+  ENameValueFlag nameFlag = LocalAccessible::Name(aName);
+  if (!aName.IsEmpty()) return nameFlag;
+
+  // text inputs and textareas might have useful placeholder text
+  mContent->AsElement()->GetAttr(nsGkAtoms::placeholder, aName);
+  return eNameOK;
+}
+
+void HTMLTextFieldAccessible::Value(nsString& aValue) const {
+  aValue.Truncate();
+  if (NativeState() & states::PROTECTED) {  // Don't return password text!
+    return;
+  }
+
+  HTMLTextAreaElement* textArea = HTMLTextAreaElement::FromNode(mContent);
+  if (textArea) {
+    textArea->GetValue(aValue);
+    return;
+  }
+
+  HTMLInputElement* input = HTMLInputElement::FromNode(mContent);
+  if (input) {
+    // Pass NonSystem as the caller type, to be safe.  We don't expect to have a
+    // file input here.
+    input->GetValue(aValue, CallerType::NonSystem);
+  }
+}
+
+bool HTMLTextFieldAccessible::AttributeChangesState(nsAtom* aAttribute) {
+  if (aAttribute == nsGkAtoms::readonly || aAttribute == nsGkAtoms::list_ ||
+      aAttribute == nsGkAtoms::autocomplete) {
+    return true;
+  }
+
+  return LocalAccessible::AttributeChangesState(aAttribute);
+}
+
+void HTMLTextFieldAccessible::ApplyARIAState(uint64_t* aState) const {
+  HyperTextAccessible::ApplyARIAState(aState);
+  aria::MapToState(aria::eARIAAutoComplete, mContent->AsElement(), aState);
+}
+
+uint64_t HTMLTextFieldAccessible::NativeState() const {
+  uint64_t state = HyperTextAccessible::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->AsElement()->AttrValueIs(kNameSpaceID_None, nsGkAtoms::type,
+                                         nsGkAtoms::password, eIgnoreCase)) {
+    state |= states::PROTECTED;
+  }
+
+  if (mContent->AsElement()->HasAttr(nsGkAtoms::readonly)) {
+    state |= states::READONLY;
+  }
+
+  // Is it an <input> or a <textarea> ?
+  HTMLInputElement* input = HTMLInputElement::FromNode(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 state if it has associated autocomplete list.
+  if (mContent->AsElement()->HasAttr(nsGkAtoms::list_)) {
+    return state | states::SUPPORTS_AUTOCOMPLETION | states::HASPOPUP;
+  }
+
+  if (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->AsElement()->GetAttr(nsGkAtoms::autocomplete, autocomplete);
+
+    if (!autocomplete.LowerCaseEqualsLiteral("off")) {
+      Element* formElement = input->GetForm();
+      if (formElement) {
+        formElement->GetAttr(nsGkAtoms::autocomplete, autocomplete);
+      }
+
+      if (!formElement || !autocomplete.LowerCaseEqualsLiteral("off")) {
+        state |= states::SUPPORTS_AUTOCOMPLETION;
+      }
+    }
+  }
+
+  return state;
+}
+
+bool HTMLTextFieldAccessible::HasPrimaryAction() const { return true; }
+
+void HTMLTextFieldAccessible::ActionNameAt(uint8_t aIndex, nsAString& aName) {
+  if (aIndex == eAction_Click) aName.AssignLiteral("activate");
+}
+
+bool HTMLTextFieldAccessible::DoAction(uint8_t aIndex) const {
+  if (aIndex != 0) return false;
+
+  if (FocusMgr()->IsFocused(this)) {
+    // This already has focus, so TakeFocus()will do nothing. However, the user
+    // might be activating this element because they dismissed a touch keyboard
+    // and want to bring it back.
+    DoCommand();
+  } else {
+    TakeFocus();
+  }
+  return true;
+}
+
+already_AddRefed<EditorBase> HTMLTextFieldAccessible::GetEditor() const {
+  RefPtr<TextControlElement> textControlElement =
+      TextControlElement::FromNodeOrNull(mContent);
+  if (!textControlElement) {
+    return nullptr;
+  }
+  RefPtr<TextEditor> textEditor = textControlElement->GetTextEditor();
+  return textEditor.forget();
+}
+
+void HTMLTextFieldAccessible::DOMAttributeChanged(int32_t aNameSpaceID,
+                                                  nsAtom* aAttribute,
+                                                  int32_t aModType,
+                                                  const nsAttrValue* aOldValue,
+                                                  uint64_t aOldState) {
+  if (aAttribute == nsGkAtoms::placeholder) {
+    mDoc->QueueCacheUpdate(this, CacheDomain::NameAndDescription);
+    return;
+  }
+  HyperTextAccessible::DOMAttributeChanged(aNameSpaceID, aAttribute, aModType,
+                                           aOldValue, aOldState);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLTextFieldAccessible: Widgets
+
+bool HTMLTextFieldAccessible::IsWidget() const { return true; }
+
+LocalAccessible* HTMLTextFieldAccessible::ContainerWidget() const {
+  return nullptr;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLFileInputAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+HTMLFileInputAccessible::HTMLFileInputAccessible(nsIContent* aContent,
+                                                 DocAccessible* aDoc)
+    : HyperTextAccessible(aContent, aDoc) {
+  mType = eHTMLFileInputType;
+  mGenericTypes |= eButton;
+}
+
+role HTMLFileInputAccessible::NativeRole() const { return roles::PUSHBUTTON; }
+
+bool HTMLFileInputAccessible::IsAcceptableChild(nsIContent* aEl) const {
+  // File inputs are rendered using native anonymous children. However, we
+  // want to expose this as a button Accessible so that clients can pick up the
+  // name and description from the button they activate, rather than a
+  // container. We still expose the text leaf descendants so we can get the
+  // name of the Browse button and the file name.
+  return aEl->IsText();
+}
+
+ENameValueFlag HTMLFileInputAccessible::Name(nsString& aName) const {
+  ENameValueFlag flag = HyperTextAccessible::Name(aName);
+  if (flag == eNameFromSubtree) {
+    // The author didn't provide a name. We'll compute the name from our subtree
+    // below.
+    aName.Truncate();
+  } else {
+    // The author provided a name. We do use that, but we also append our
+    // subtree text so the user knows this is a file chooser button and what
+    // file has been chosen.
+    if (aName.IsEmpty()) {
+      // Name computation is recursing, perhaps due to a wrapping <label>. Don't
+      // append the subtree text. Return " " to prevent
+      // nsTextEquivUtils::AppendFromAccessible walking the subtree itself.
+      aName += ' ';
+      return flag;
+    }
+  }
+  // Unfortunately, GetNameFromSubtree doesn't separate the button text from the
+  // file name text. Compute the text ourselves.
+  uint32_t count = ChildCount();
+  for (uint32_t c = 0; c < count; ++c) {
+    TextLeafAccessible* leaf = LocalChildAt(c)->AsTextLeaf();
+    MOZ_ASSERT(leaf);
+    if (!aName.IsEmpty()) {
+      aName += ' ';
+    }
+    aName += leaf->Text();
+  }
+  return flag;
+}
+
+bool HTMLFileInputAccessible::HasPrimaryAction() const { return true; }
+
+void HTMLFileInputAccessible::ActionNameAt(uint8_t aIndex, nsAString& aName) {
+  if (aIndex == 0) {
+    aName.AssignLiteral("press");
+  }
+}
+
+bool HTMLFileInputAccessible::IsWidget() const { return true; }
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLSpinnerAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+role HTMLSpinnerAccessible::NativeRole() const { return roles::SPINBUTTON; }
+
+void HTMLSpinnerAccessible::Value(nsString& aValue) const {
+  HTMLTextFieldAccessible::Value(aValue);
+  if (!aValue.IsEmpty()) return;
+
+  // Pass NonSystem as the caller type, to be safe.  We don't expect to have a
+  // file input here.
+  HTMLInputElement::FromNode(mContent)->GetValue(aValue, CallerType::NonSystem);
+}
+
+double HTMLSpinnerAccessible::MaxValue() const {
+  double value = HTMLTextFieldAccessible::MaxValue();
+  if (!std::isnan(value)) return value;
+
+  return HTMLInputElement::FromNode(mContent)->GetMaximum().toDouble();
+}
+
+double HTMLSpinnerAccessible::MinValue() const {
+  double value = HTMLTextFieldAccessible::MinValue();
+  if (!std::isnan(value)) return value;
+
+  return HTMLInputElement::FromNode(mContent)->GetMinimum().toDouble();
+}
+
+double HTMLSpinnerAccessible::Step() const {
+  double value = HTMLTextFieldAccessible::Step();
+  if (!std::isnan(value)) return value;
+
+  return HTMLInputElement::FromNode(mContent)->GetStep().toDouble();
+}
+
+double HTMLSpinnerAccessible::CurValue() const {
+  double value = HTMLTextFieldAccessible::CurValue();
+  if (!std::isnan(value)) return value;
+
+  return HTMLInputElement::FromNode(mContent)->GetValueAsDecimal().toDouble();
+}
+
+bool HTMLSpinnerAccessible::SetCurValue(double aValue) {
+  ErrorResult er;
+  HTMLInputElement::FromNode(mContent)->SetValueAsNumber(aValue, er);
+  return !er.Failed();
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLRangeAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+role HTMLRangeAccessible::NativeRole() const { return roles::SLIDER; }
+
+bool HTMLRangeAccessible::IsWidget() const { return true; }
+
+void HTMLRangeAccessible::Value(nsString& aValue) const {
+  LeafAccessible::Value(aValue);
+  if (!aValue.IsEmpty()) return;
+
+  // Pass NonSystem as the caller type, to be safe.  We don't expect to have a
+  // file input here.
+  HTMLInputElement::FromNode(mContent)->GetValue(aValue, CallerType::NonSystem);
+}
+
+double HTMLRangeAccessible::MaxValue() const {
+  double value = LeafAccessible::MaxValue();
+  if (!std::isnan(value)) return value;
+
+  return HTMLInputElement::FromNode(mContent)->GetMaximum().toDouble();
+}
+
+double HTMLRangeAccessible::MinValue() const {
+  double value = LeafAccessible::MinValue();
+  if (!std::isnan(value)) return value;
+
+  return HTMLInputElement::FromNode(mContent)->GetMinimum().toDouble();
+}
+
+double HTMLRangeAccessible::Step() const {
+  double value = LeafAccessible::Step();
+  if (!std::isnan(value)) return value;
+
+  return HTMLInputElement::FromNode(mContent)->GetStep().toDouble();
+}
+
+double HTMLRangeAccessible::CurValue() const {
+  double value = LeafAccessible::CurValue();
+  if (!std::isnan(value)) return value;
+
+  return HTMLInputElement::FromNode(mContent)->GetValueAsDecimal().toDouble();
+}
+
+bool HTMLRangeAccessible::SetCurValue(double aValue) {
+  nsAutoString strValue;
+  strValue.AppendFloat(aValue);
+  HTMLInputElement::FromNode(mContent)->SetUserInput(
+      strValue, *nsContentUtils::GetSystemPrincipal());
+  return true;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLGroupboxAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+HTMLGroupboxAccessible::HTMLGroupboxAccessible(nsIContent* aContent,
+                                               DocAccessible* aDoc)
+    : HyperTextAccessible(aContent, aDoc) {}
+
+role HTMLGroupboxAccessible::NativeRole() const { 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) const {
+  ENameValueFlag nameFlag = LocalAccessible::NativeName(aName);
+  if (!aName.IsEmpty()) return nameFlag;
+
+  nsIContent* legendContent = GetLegend();
+  if (legendContent) {
+    nsTextEquivUtils::AppendTextEquivFromContent(this, legendContent, &aName);
+  }
+
+  aName.CompressWhitespace();
+  return eNameOK;
+}
+
+Relation HTMLGroupboxAccessible::RelationByType(RelationType aType) const {
+  Relation rel = HyperTextAccessible::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)
+    : HyperTextAccessible(aContent, aDoc) {}
+
+Relation HTMLLegendAccessible::RelationByType(RelationType aType) const {
+  Relation rel = HyperTextAccessible::RelationByType(aType);
+  if (aType != RelationType::LABEL_FOR) return rel;
+
+  LocalAccessible* groupbox = LocalParent();
+  if (groupbox && groupbox->Role() == roles::GROUPING) {
+    rel.AppendTarget(groupbox);
+  }
+
+  return rel;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLFigureAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+HTMLFigureAccessible::HTMLFigureAccessible(nsIContent* aContent,
+                                           DocAccessible* aDoc)
+    : HyperTextAccessible(aContent, aDoc) {}
+
+ENameValueFlag HTMLFigureAccessible::NativeName(nsString& aName) const {
+  ENameValueFlag nameFlag = HyperTextAccessible::NativeName(aName);
+  if (!aName.IsEmpty()) return nameFlag;
+
+  nsIContent* captionContent = Caption();
+  if (captionContent) {
+    nsTextEquivUtils::AppendTextEquivFromContent(this, captionContent, &aName);
+  }
+
+  aName.CompressWhitespace();
+  return eNameOK;
+}
+
+Relation HTMLFigureAccessible::RelationByType(RelationType aType) const {
+  Relation rel = HyperTextAccessible::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)
+    : HyperTextAccessible(aContent, aDoc) {}
+
+Relation HTMLFigcaptionAccessible::RelationByType(RelationType aType) const {
+  Relation rel = HyperTextAccessible::RelationByType(aType);
+  if (aType != RelationType::LABEL_FOR) return rel;
+
+  LocalAccessible* figure = LocalParent();
+  if (figure && figure->GetContent()->NodeInfo()->Equals(
+                    nsGkAtoms::figure, mContent->GetNameSpaceID())) {
+    rel.AppendTarget(figure);
+  }
+
+  return rel;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLProgressAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+role HTMLProgressAccessible::NativeRole() const { return roles::PROGRESSBAR; }
+
+uint64_t HTMLProgressAccessible::NativeState() const {
+  uint64_t state = LeafAccessible::NativeState();
+
+  // An undetermined progressbar (i.e. without a value) has a mixed state.
+  nsAutoString attrValue;
+  mContent->AsElement()->GetAttr(nsGkAtoms::value, attrValue);
+  if (attrValue.IsEmpty()) {
+    state |= states::MIXED;
+  }
+
+  return state;
+}
+
+bool HTMLProgressAccessible::IsWidget() const { return true; }
+
+void HTMLProgressAccessible::Value(nsString& aValue) const {
+  LeafAccessible::Value(aValue);
+  if (!aValue.IsEmpty()) {
+    return;
+  }
+
+  double maxValue = MaxValue();
+  if (std::isnan(maxValue) || maxValue == 0) {
+    return;
+  }
+
+  double curValue = CurValue();
+  if (std::isnan(curValue)) {
+    return;
+  }
+
+  // Treat the current value bigger than maximum as 100%.
+  double percentValue =
+      (curValue < maxValue) ? (curValue / maxValue) * 100 : 100;
+
+  aValue.AppendFloat(percentValue);
+  aValue.Append('%');
+}
+
+double HTMLProgressAccessible::MaxValue() const {
+  double value = LeafAccessible::MaxValue();
+  if (!std::isnan(value)) {
+    return value;
+  }
+
+  nsAutoString strValue;
+  if (mContent->AsElement()->GetAttr(nsGkAtoms::max, strValue)) {
+    nsresult result = NS_OK;
+    value = strValue.ToDouble(&result);
+    if (NS_SUCCEEDED(result)) {
+      return value;
+    }
+  }
+
+  return 1;
+}
+
+double HTMLProgressAccessible::MinValue() const {
+  double value = LeafAccessible::MinValue();
+  return std::isnan(value) ? 0 : value;
+}
+
+double HTMLProgressAccessible::Step() const {
+  double value = LeafAccessible::Step();
+  return std::isnan(value) ? 0 : value;
+}
+
+double HTMLProgressAccessible::CurValue() const {
+  double value = LeafAccessible::CurValue();
+  if (!std::isnan(value)) {
+    return value;
+  }
+
+  nsAutoString attrValue;
+  if (!mContent->AsElement()->GetAttr(nsGkAtoms::value, attrValue)) {
+    return UnspecifiedNaN<double>();
+  }
+
+  nsresult error = NS_OK;
+  value = attrValue.ToDouble(&error);
+  return NS_FAILED(error) ? UnspecifiedNaN<double>() : value;
+}
+
+bool HTMLProgressAccessible::SetCurValue(double aValue) {
+  return false;  // progress meters are readonly.
+}
+
+void HTMLProgressAccessible::DOMAttributeChanged(int32_t aNameSpaceID,
+                                                 nsAtom* aAttribute,
+                                                 int32_t aModType,
+                                                 const nsAttrValue* aOldValue,
+                                                 uint64_t aOldState) {
+  LeafAccessible::DOMAttributeChanged(aNameSpaceID, aAttribute, aModType,
+                                      aOldValue, aOldState);
+
+  if (aAttribute == nsGkAtoms::value) {
+    mDoc->FireDelayedEvent(nsIAccessibleEvent::EVENT_VALUE_CHANGE, this);
+
+    uint64_t currState = NativeState();
+    if ((aOldState ^ currState) & states::MIXED) {
+      RefPtr<AccEvent> stateChangeEvent = new AccStateChangeEvent(
+          this, states::MIXED, (currState & states::MIXED));
+      mDoc->FireDelayedEvent(stateChangeEvent);
+    }
+  }
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// HTMLMeterAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+role HTMLMeterAccessible::NativeRole() const { return roles::METER; }
+
+bool HTMLMeterAccessible::IsWidget() const { return true; }
+
+void HTMLMeterAccessible::Value(nsString& aValue) const {
+  LeafAccessible::Value(aValue);
+  if (!aValue.IsEmpty()) {
+    return;
+  }
+
+  // If we did not get a value from the above LeafAccessible call,
+  // we should check to see if the meter has inner text.
+  // If it does, we'll use that as our value.
+  nsTextEquivUtils::AppendFromDOMChildren(mContent, &aValue);
+  aValue.CompressWhitespace();
+  if (!aValue.IsEmpty()) {
+    return;
+  }
+
+  // If no inner text is found, use curValue
+  double curValue = CurValue();
+  if (std::isnan(curValue)) {
+    return;
+  }
+
+  aValue.AppendFloat(curValue);
+}
+
+double HTMLMeterAccessible::MaxValue() const {
+  double max = LeafAccessible::MaxValue();
+  double min = MinValue();
+
+  if (!std::isnan(max)) {
+    return max > min ? max : min;
+  }
+
+  // If we didn't find a max value, check for the max attribute
+  nsAutoString strValue;
+  if (mContent->AsElement()->GetAttr(nsGkAtoms::max, strValue)) {
+    nsresult result = NS_OK;
+    max = strValue.ToDouble(&result);
+    if (NS_SUCCEEDED(result)) {
+      return max > min ? max : min;
+    }
+  }
+
+  return 1 > min ? 1 : min;
+}
+
+double HTMLMeterAccessible::MinValue() const {
+  double min = LeafAccessible::MinValue();
+  if (!std::isnan(min)) {
+    return min;
+  }
+
+  nsAutoString strValue;
+  if (mContent->AsElement()->GetAttr(nsGkAtoms::min, strValue)) {
+    nsresult result = NS_OK;
+    min = strValue.ToDouble(&result);
+    if (NS_SUCCEEDED(result)) {
+      return min;
+    }
+  }
+
+  return 0;
+}
+
+double HTMLMeterAccessible::CurValue() const {
+  double value = LeafAccessible::CurValue();
+  double minValue = MinValue();
+
+  if (std::isnan(value)) {
+    /* If we didn't find a value from the LeafAccessible call above, check
+     * for a value attribute */
+    nsAutoString attrValue;
+    if (!mContent->AsElement()->GetAttr(nsGkAtoms::value, attrValue)) {
+      return minValue;
+    }
+
+    // If we find a value attribute, attempt to convert it to a double
+    nsresult error = NS_OK;
+    value = attrValue.ToDouble(&error);
+    if (NS_FAILED(error)) {
+      return minValue;
+    }
+  }
+
+  /* If we end up with a defined value, verify it falls between
+   * our established min/max. Otherwise, snap it to the nearest boundary. */
+  double maxValue = MaxValue();
+  if (value > maxValue) {
+    value = maxValue;
+  } else if (value < minValue) {
+    value = minValue;
+  }
+
+  return value;
+}
+
+bool HTMLMeterAccessible::SetCurValue(double aValue) {
+  return false;  // meters are readonly.
+}
+
+void HTMLMeterAccessible::DOMAttributeChanged(int32_t aNameSpaceID,
+                                              nsAtom* aAttribute,
+                                              int32_t aModType,
+                                              const nsAttrValue* aOldValue,
+                                              uint64_t aOldState) {
+  LeafAccessible::DOMAttributeChanged(aNameSpaceID, aAttribute, aModType,
+                                      aOldValue, aOldState);
+
+  if (aAttribute == nsGkAtoms::value) {
+    mDoc->FireDelayedEvent(nsIAccessibleEvent::EVENT_VALUE_CHANGE, this);
+  }
+}