8 files changed, 1148 insertions, 0 deletions

diff --git a/accessible/windows/sdn/moz.build b/accessible/windows/sdn/moz.build
new file mode 100644
index 0000000000..8d76b7482e
--- /dev/null
+++ b/accessible/windows/sdn/moz.build
@@ -0,0 +1,24 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# 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/.
+
+UNIFIED_SOURCES += [
+    "sdnAccessible.cpp",
+    "sdnDocAccessible.cpp",
+    "sdnTextAccessible.cpp",
+]
+
+LOCAL_INCLUDES += [
+    "/accessible/base",
+    "/accessible/generic",
+    "/accessible/html",
+    "/accessible/windows/msaa",
+    "/accessible/xpcom",
+    "/accessible/xul",
+]
+
+include("/ipc/chromium/chromium-config.mozbuild")
+
+FINAL_LIBRARY = "xul"
diff --git a/accessible/windows/sdn/sdnAccessible-inl.h b/accessible/windows/sdn/sdnAccessible-inl.h
new file mode 100644
index 0000000000..76f8796f42
--- /dev/null
+++ b/accessible/windows/sdn/sdnAccessible-inl.h
@@ -0,0 +1,49 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#ifndef mozilla_a11y_sdnAccessible_inl_h_
+#define mozilla_a11y_sdnAccessible_inl_h_
+
+#include "sdnAccessible.h"
+
+#include "DocAccessible.h"
+#include "nsAccessibilityService.h"
+
+namespace mozilla {
+namespace a11y {
+
+inline DocAccessible* sdnAccessible::GetDocument() const {
+  MOZ_ASSERT(mNode);
+  return GetExistingDocAccessible(mNode->OwnerDoc());
+}
+
+inline MsaaAccessible* sdnAccessible::GetMsaa() {
+  if (mMsaa) {
+    return mMsaa;
+  }
+
+  DocAccessible* document = GetDocument();
+  if (!document) {
+    return nullptr;
+  }
+
+  // Once we have an accessible, we should hold a reference to it so that we
+  // may preserve object identity.
+  AccessibleWrap* wrap = static_cast<AccessibleWrap*>(
+      document->GetAccessibleEvenIfNotInMap(mNode));
+
+  if (!wrap) {
+    return nullptr;
+  }
+
+  wrap->GetNativeInterface(getter_AddRefs(mMsaa));
+  return mMsaa;
+}
+
+}  // namespace a11y
+}  // namespace mozilla
+
+#endif  // mozilla_a11y_sdnAccessible_inl_h_
diff --git a/accessible/windows/sdn/sdnAccessible.cpp b/accessible/windows/sdn/sdnAccessible.cpp
new file mode 100644
index 0000000000..c1bbbb7e2f
--- /dev/null
+++ b/accessible/windows/sdn/sdnAccessible.cpp
@@ -0,0 +1,522 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* 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 "sdnAccessible-inl.h"
+#include "ISimpleDOM_i.c"
+
+#include "DocAccessibleWrap.h"
+
+#include "nsAttrName.h"
+#include "nsCoreUtils.h"
+#include "nsIAccessibleTypes.h"
+#include "nsICSSDeclaration.h"
+#include "nsNameSpaceManager.h"
+#include "nsServiceManagerUtils.h"
+#include "nsWinUtils.h"
+#include "nsRange.h"
+
+#include "mozilla/dom/BorrowedAttrInfo.h"
+#include "mozilla/dom/Document.h"
+#include "mozilla/dom/Element.h"
+#include "mozilla/ErrorResult.h"
+#include "mozilla/PresShell.h"
+
+using namespace mozilla;
+using namespace mozilla::a11y;
+
+sdnAccessible::~sdnAccessible() {
+  if (mUniqueId.isSome()) {
+    MsaaAccessible::ReleaseChildID(WrapNotNull(this));
+  }
+}
+
+STDMETHODIMP
+sdnAccessible::QueryInterface(REFIID aREFIID, void** aInstancePtr) {
+  if (!aInstancePtr) return E_FAIL;
+  *aInstancePtr = nullptr;
+
+  if (aREFIID == IID_IClientSecurity) {
+    // Some code might QI(IID_IClientSecurity) to detect whether or not we are
+    // a proxy. Right now that can potentially happen off the main thread, so we
+    // look for this condition immediately so that we don't trigger other code
+    // that might not be thread-safe.
+    return E_NOINTERFACE;
+  }
+
+  if (aREFIID == IID_ISimpleDOMNode) {
+    *aInstancePtr = static_cast<ISimpleDOMNode*>(this);
+    AddRef();
+    return S_OK;
+  }
+
+  MsaaAccessible* accessible = GetMsaa();
+  if (accessible) return accessible->QueryInterface(aREFIID, aInstancePtr);
+
+  // IUnknown* is the canonical one if and only if this accessible doesn't have
+  // an accessible.
+  if (aREFIID == IID_IUnknown) {
+    *aInstancePtr = static_cast<ISimpleDOMNode*>(this);
+    AddRef();
+    return S_OK;
+  }
+
+  return E_NOINTERFACE;
+}
+
+STDMETHODIMP
+sdnAccessible::get_nodeInfo(BSTR __RPC_FAR* aNodeName,
+                            short __RPC_FAR* aNameSpaceID,
+                            BSTR __RPC_FAR* aNodeValue,
+                            unsigned int __RPC_FAR* aNumChildren,
+                            unsigned int __RPC_FAR* aUniqueID,
+                            unsigned short __RPC_FAR* aNodeType) {
+  if (!aNodeName || !aNameSpaceID || !aNodeValue || !aNumChildren ||
+      !aUniqueID || !aNodeType)
+    return E_INVALIDARG;
+
+  *aNodeName = nullptr;
+  *aNameSpaceID = 0;
+  *aNodeValue = nullptr;
+  *aNumChildren = 0;
+  *aUniqueID = 0;
+  *aNodeType = 0;
+
+  if (IsDefunct()) return CO_E_OBJNOTCONNECTED;
+
+  // This is a unique ID for every content node. The 3rd party accessibility
+  // application can compare this to the childID we return for events such as
+  // focus events, to correlate back to data nodes in their internal object
+  // model.
+  MsaaAccessible* accessible = GetMsaa();
+  if (accessible) {
+    *aUniqueID = MsaaAccessible::GetChildIDFor(accessible->Acc());
+  } else {
+    if (mUniqueId.isNothing()) {
+      MsaaAccessible::AssignChildIDTo(WrapNotNull(this));
+    }
+    MOZ_ASSERT(mUniqueId.isSome());
+    *aUniqueID = mUniqueId.value();
+  }
+
+  if (!mNode) {
+    RemoteAccessible* remoteAcc = accessible->Acc()->AsRemote();
+    MOZ_ASSERT(remoteAcc);
+    if (remoteAcc->IsText()) {
+      *aNodeType = nsINode::TEXT_NODE;
+    } else if (remoteAcc->IsDoc()) {
+      *aNodeType = nsINode::DOCUMENT_NODE;
+    } else {
+      *aNodeType = nsINode::ELEMENT_NODE;
+    }
+    if (nsAtom* tag = remoteAcc->TagName()) {
+      nsAutoString nodeName;
+      tag->ToString(nodeName);
+      *aNodeName = ::SysAllocString(nodeName.get());
+    }
+    return S_OK;
+  }
+
+  uint16_t nodeType = mNode->NodeType();
+  *aNodeType = static_cast<unsigned short>(nodeType);
+
+  if (*aNodeType != NODETYPE_TEXT) {
+    *aNodeName = ::SysAllocString(mNode->NodeName().get());
+  }
+
+  nsAutoString nodeValue;
+  mNode->GetNodeValue(nodeValue);
+  *aNodeValue = ::SysAllocString(nodeValue.get());
+
+  *aNameSpaceID = mNode->IsContent()
+                      ? static_cast<short>(mNode->AsContent()->GetNameSpaceID())
+                      : 0;
+
+  *aNumChildren = mNode->GetChildCount();
+
+  return S_OK;
+}
+
+STDMETHODIMP
+sdnAccessible::get_attributes(unsigned short aMaxAttribs,
+                              BSTR __RPC_FAR* aAttribNames,
+                              short __RPC_FAR* aNameSpaceIDs,
+                              BSTR __RPC_FAR* aAttribValues,
+                              unsigned short __RPC_FAR* aNumAttribs) {
+  if (!aAttribNames || !aNameSpaceIDs || !aAttribValues || !aNumAttribs)
+    return E_INVALIDARG;
+
+  *aNumAttribs = 0;
+
+  if (IsDefunct()) return CO_E_OBJNOTCONNECTED;
+  if (!mNode) {
+    MOZ_ASSERT(mMsaa && mMsaa->Acc()->IsRemote());
+    return E_NOTIMPL;
+  }
+
+  if (!mNode->IsElement()) return S_FALSE;
+
+  dom::Element* elm = mNode->AsElement();
+  uint32_t numAttribs = elm->GetAttrCount();
+  if (numAttribs > aMaxAttribs) numAttribs = aMaxAttribs;
+
+  *aNumAttribs = static_cast<unsigned short>(numAttribs);
+
+  for (uint32_t index = 0; index < numAttribs; index++) {
+    aNameSpaceIDs[index] = 0;
+    aAttribValues[index] = aAttribNames[index] = nullptr;
+    nsAutoString attributeValue;
+
+    dom::BorrowedAttrInfo attr = elm->GetAttrInfoAt(index);
+    attr.mValue->ToString(attributeValue);
+
+    aNameSpaceIDs[index] = static_cast<short>(attr.mName->NamespaceID());
+    aAttribNames[index] =
+        ::SysAllocString(attr.mName->LocalName()->GetUTF16String());
+    aAttribValues[index] = ::SysAllocString(attributeValue.get());
+  }
+
+  return S_OK;
+}
+
+STDMETHODIMP
+sdnAccessible::get_attributesForNames(unsigned short aMaxAttribs,
+                                      BSTR __RPC_FAR* aAttribNames,
+                                      short __RPC_FAR* aNameSpaceID,
+                                      BSTR __RPC_FAR* aAttribValues) {
+  if (!aAttribNames || !aNameSpaceID || !aAttribValues) return E_INVALIDARG;
+
+  if (IsDefunct()) return CO_E_OBJNOTCONNECTED;
+  if (!mNode) {
+    MOZ_ASSERT(mMsaa && mMsaa->Acc()->IsRemote());
+    // NVDA expects this to succeed for MathML and won't call innerHTML if this
+    // fails. Therefore, return S_FALSE here instead of E_NOTIMPL, indicating
+    // that the attributes aren't present.
+    return S_FALSE;
+  }
+
+  if (!mNode->IsElement()) return S_FALSE;
+
+  dom::Element* domElement = mNode->AsElement();
+  nsNameSpaceManager* nameSpaceManager = nsNameSpaceManager::GetInstance();
+
+  int32_t index = 0;
+  for (index = 0; index < aMaxAttribs; index++) {
+    aAttribValues[index] = nullptr;
+    if (aAttribNames[index]) {
+      nsAutoString attributeValue, nameSpaceURI;
+      nsAutoString attributeName(
+          nsDependentString(static_cast<const wchar_t*>(aAttribNames[index])));
+
+      if (aNameSpaceID[index] > 0 &&
+          NS_SUCCEEDED(nameSpaceManager->GetNameSpaceURI(aNameSpaceID[index],
+                                                         nameSpaceURI))) {
+        domElement->GetAttributeNS(nameSpaceURI, attributeName, attributeValue);
+      } else {
+        domElement->GetAttribute(attributeName, attributeValue);
+      }
+
+      aAttribValues[index] = ::SysAllocString(attributeValue.get());
+    }
+  }
+
+  return S_OK;
+}
+
+STDMETHODIMP
+sdnAccessible::get_computedStyle(
+    unsigned short aMaxStyleProperties, boolean aUseAlternateView,
+    BSTR __RPC_FAR* aStyleProperties, BSTR __RPC_FAR* aStyleValues,
+    unsigned short __RPC_FAR* aNumStyleProperties) {
+  if (!aStyleProperties || aStyleValues || !aNumStyleProperties)
+    return E_INVALIDARG;
+
+  if (IsDefunct()) return CO_E_OBJNOTCONNECTED;
+  if (!mNode) {
+    MOZ_ASSERT(mMsaa && mMsaa->Acc()->IsRemote());
+    return E_NOTIMPL;
+  }
+
+  *aNumStyleProperties = 0;
+
+  if (mNode->IsDocument()) return S_FALSE;
+
+  nsCOMPtr<nsICSSDeclaration> cssDecl =
+      nsWinUtils::GetComputedStyleDeclaration(mNode->AsContent());
+  NS_ENSURE_TRUE(cssDecl, E_FAIL);
+
+  uint32_t length = cssDecl->Length();
+
+  uint32_t index = 0, realIndex = 0;
+  for (index = realIndex = 0; index < length && realIndex < aMaxStyleProperties;
+       index++) {
+    nsAutoCString property;
+    nsAutoCString value;
+
+    // Ignore -moz-* properties.
+    cssDecl->Item(index, property);
+    if (property.CharAt(0) != '-')
+      cssDecl->GetPropertyValue(property, value);  // Get property value
+
+    if (!value.IsEmpty()) {
+      aStyleProperties[realIndex] =
+          ::SysAllocString(NS_ConvertUTF8toUTF16(property).get());
+      aStyleValues[realIndex] =
+          ::SysAllocString(NS_ConvertUTF8toUTF16(value).get());
+      ++realIndex;
+    }
+  }
+
+  *aNumStyleProperties = static_cast<unsigned short>(realIndex);
+
+  return S_OK;
+}
+
+STDMETHODIMP
+sdnAccessible::get_computedStyleForProperties(
+    unsigned short aNumStyleProperties, boolean aUseAlternateView,
+    BSTR __RPC_FAR* aStyleProperties, BSTR __RPC_FAR* aStyleValues) {
+  if (!aStyleProperties || !aStyleValues) return E_INVALIDARG;
+
+  if (IsDefunct()) return CO_E_OBJNOTCONNECTED;
+  if (!mNode) {
+    MOZ_ASSERT(mMsaa && mMsaa->Acc()->IsRemote());
+    return E_NOTIMPL;
+  }
+
+  if (mNode->IsDocument()) return S_FALSE;
+
+  nsCOMPtr<nsICSSDeclaration> cssDecl =
+      nsWinUtils::GetComputedStyleDeclaration(mNode->AsContent());
+  NS_ENSURE_TRUE(cssDecl, E_FAIL);
+
+  uint32_t index = 0;
+  for (index = 0; index < aNumStyleProperties; index++) {
+    nsAutoCString value;
+    if (aStyleProperties[index])
+      cssDecl->GetPropertyValue(
+          NS_ConvertUTF16toUTF8(nsDependentString(aStyleProperties[index])),
+          value);  // Get property value
+    aStyleValues[index] = ::SysAllocString(NS_ConvertUTF8toUTF16(value).get());
+  }
+
+  return S_OK;
+}
+
+// XXX Use MOZ_CAN_RUN_SCRIPT_BOUNDARY for now due to bug 1543294.
+MOZ_CAN_RUN_SCRIPT_BOUNDARY STDMETHODIMP
+sdnAccessible::scrollTo(boolean aScrollTopLeft) {
+  if (IsDefunct()) {
+    return CO_E_OBJNOTCONNECTED;
+  }
+  if (!mNode) {
+    MOZ_ASSERT(mMsaa && mMsaa->Acc()->IsRemote());
+    return E_NOTIMPL;
+  }
+
+  DocAccessible* document = GetDocument();
+  MOZ_ASSERT(document);
+  if (!mNode->IsContent()) return S_FALSE;
+
+  uint32_t scrollType = aScrollTopLeft
+                            ? nsIAccessibleScrollType::SCROLL_TYPE_TOP_LEFT
+                            : nsIAccessibleScrollType::SCROLL_TYPE_BOTTOM_RIGHT;
+
+  RefPtr<PresShell> presShell = document->PresShellPtr();
+  nsCOMPtr<nsIContent> content = mNode->AsContent();
+  nsCoreUtils::ScrollTo(presShell, content, scrollType);
+  return S_OK;
+}
+
+STDMETHODIMP
+sdnAccessible::get_parentNode(ISimpleDOMNode __RPC_FAR* __RPC_FAR* aNode) {
+  if (!aNode) return E_INVALIDARG;
+  *aNode = nullptr;
+
+  if (IsDefunct()) return CO_E_OBJNOTCONNECTED;
+  if (!mNode) {
+    MOZ_ASSERT(mMsaa && mMsaa->Acc()->IsRemote());
+    return E_NOTIMPL;
+  }
+
+  nsINode* resultNode = mNode->GetParentNode();
+  if (resultNode) {
+    *aNode = static_cast<ISimpleDOMNode*>(new sdnAccessible(resultNode));
+    (*aNode)->AddRef();
+  }
+
+  return S_OK;
+}
+
+STDMETHODIMP
+sdnAccessible::get_firstChild(ISimpleDOMNode __RPC_FAR* __RPC_FAR* aNode) {
+  if (!aNode) return E_INVALIDARG;
+  *aNode = nullptr;
+
+  if (IsDefunct()) return CO_E_OBJNOTCONNECTED;
+  if (!mNode) {
+    MOZ_ASSERT(mMsaa && mMsaa->Acc()->IsRemote());
+    return E_NOTIMPL;
+  }
+
+  nsINode* resultNode = mNode->GetFirstChild();
+  if (resultNode) {
+    *aNode = static_cast<ISimpleDOMNode*>(new sdnAccessible(resultNode));
+    (*aNode)->AddRef();
+  }
+
+  return S_OK;
+}
+
+STDMETHODIMP
+sdnAccessible::get_lastChild(ISimpleDOMNode __RPC_FAR* __RPC_FAR* aNode) {
+  if (!aNode) return E_INVALIDARG;
+  *aNode = nullptr;
+
+  if (IsDefunct()) return CO_E_OBJNOTCONNECTED;
+  if (!mNode) {
+    MOZ_ASSERT(mMsaa && mMsaa->Acc()->IsRemote());
+    return E_NOTIMPL;
+  }
+
+  nsINode* resultNode = mNode->GetLastChild();
+  if (resultNode) {
+    *aNode = static_cast<ISimpleDOMNode*>(new sdnAccessible(resultNode));
+    (*aNode)->AddRef();
+  }
+
+  return S_OK;
+}
+
+STDMETHODIMP
+sdnAccessible::get_previousSibling(ISimpleDOMNode __RPC_FAR* __RPC_FAR* aNode) {
+  if (!aNode) return E_INVALIDARG;
+  *aNode = nullptr;
+
+  if (IsDefunct()) return CO_E_OBJNOTCONNECTED;
+  if (!mNode) {
+    MOZ_ASSERT(mMsaa && mMsaa->Acc()->IsRemote());
+    return E_NOTIMPL;
+  }
+
+  nsINode* resultNode = mNode->GetPreviousSibling();
+  if (resultNode) {
+    *aNode = static_cast<ISimpleDOMNode*>(new sdnAccessible(resultNode));
+    (*aNode)->AddRef();
+  }
+
+  return S_OK;
+}
+
+STDMETHODIMP
+sdnAccessible::get_nextSibling(ISimpleDOMNode __RPC_FAR* __RPC_FAR* aNode) {
+  if (!aNode) return E_INVALIDARG;
+  *aNode = nullptr;
+
+  if (IsDefunct()) return CO_E_OBJNOTCONNECTED;
+  if (!mNode) {
+    MOZ_ASSERT(mMsaa && mMsaa->Acc()->IsRemote());
+    return E_NOTIMPL;
+  }
+
+  nsINode* resultNode = mNode->GetNextSibling();
+  if (resultNode) {
+    *aNode = static_cast<ISimpleDOMNode*>(new sdnAccessible(resultNode));
+    (*aNode)->AddRef();
+  }
+
+  return S_OK;
+}
+
+STDMETHODIMP
+sdnAccessible::get_childAt(unsigned aChildIndex,
+                           ISimpleDOMNode __RPC_FAR* __RPC_FAR* aNode) {
+  if (!aNode) return E_INVALIDARG;
+  *aNode = nullptr;
+
+  if (IsDefunct()) return CO_E_OBJNOTCONNECTED;
+  if (!mNode) {
+    MOZ_ASSERT(mMsaa && mMsaa->Acc()->IsRemote());
+    return E_NOTIMPL;
+  }
+
+  nsINode* resultNode = mNode->GetChildAt_Deprecated(aChildIndex);
+  if (resultNode) {
+    *aNode = static_cast<ISimpleDOMNode*>(new sdnAccessible(resultNode));
+    (*aNode)->AddRef();
+  }
+
+  return S_OK;
+}
+
+STDMETHODIMP
+sdnAccessible::get_innerHTML(BSTR __RPC_FAR* aInnerHTML) {
+  if (!aInnerHTML) return E_INVALIDARG;
+  *aInnerHTML = nullptr;
+
+  if (IsDefunct()) return CO_E_OBJNOTCONNECTED;
+
+  nsAutoString innerHTML;
+  if (!mNode) {
+    RemoteAccessible* remoteAcc = mMsaa->Acc()->AsRemote();
+    MOZ_ASSERT(remoteAcc);
+    if (!remoteAcc->mCachedFields) {
+      return S_FALSE;
+    }
+    remoteAcc->mCachedFields->GetAttribute(nsGkAtoms::html, innerHTML);
+  } else {
+    if (!mNode->IsElement()) {
+      return S_FALSE;
+    }
+    mNode->AsElement()->GetInnerHTML(innerHTML, IgnoreErrors());
+  }
+
+  if (innerHTML.IsEmpty()) return S_FALSE;
+
+  *aInnerHTML = ::SysAllocStringLen(innerHTML.get(), innerHTML.Length());
+  if (!*aInnerHTML) return E_OUTOFMEMORY;
+
+  return S_OK;
+}
+
+STDMETHODIMP
+sdnAccessible::get_localInterface(void __RPC_FAR* __RPC_FAR* aLocalInterface) {
+  if (!aLocalInterface) return E_INVALIDARG;
+  *aLocalInterface = nullptr;
+
+  if (IsDefunct()) return CO_E_OBJNOTCONNECTED;
+
+  *aLocalInterface = this;
+  AddRef();
+
+  return S_OK;
+}
+
+STDMETHODIMP
+sdnAccessible::get_language(BSTR __RPC_FAR* aLanguage) {
+  if (!aLanguage) return E_INVALIDARG;
+  *aLanguage = nullptr;
+
+  if (IsDefunct()) return CO_E_OBJNOTCONNECTED;
+  if (!mNode) {
+    MOZ_ASSERT(mMsaa && mMsaa->Acc()->IsRemote());
+    return E_NOTIMPL;
+  }
+
+  nsAutoString language;
+  if (mNode->IsContent())
+    nsCoreUtils::GetLanguageFor(mNode->AsContent(), nullptr, language);
+  if (language.IsEmpty()) {  // Nothing found, so use document's language
+    mNode->OwnerDoc()->GetHeaderData(nsGkAtoms::headerContentLanguage,
+                                     language);
+  }
+
+  if (language.IsEmpty()) return S_FALSE;
+
+  *aLanguage = ::SysAllocStringLen(language.get(), language.Length());
+  if (!*aLanguage) return E_OUTOFMEMORY;
+
+  return S_OK;
+}
diff --git a/accessible/windows/sdn/sdnAccessible.h b/accessible/windows/sdn/sdnAccessible.h
new file mode 100644
index 0000000000..610a4ca5de
--- /dev/null
+++ b/accessible/windows/sdn/sdnAccessible.h
@@ -0,0 +1,149 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#ifndef mozilla_a11y_sdnAccessible_h_
+#define mozilla_a11y_sdnAccessible_h_
+
+#include "ISimpleDOM.h"
+#include "AccessibleWrap.h"
+#include "IUnknownImpl.h"
+#include "MsaaAccessible.h"
+
+#include "mozilla/Attributes.h"
+#include "mozilla/Maybe.h"
+#include "mozilla/NotNull.h"
+
+namespace mozilla {
+namespace a11y {
+
+class sdnAccessible final : public ISimpleDOMNode {
+ public:
+  explicit sdnAccessible(nsINode* aNode) : mNode(aNode) {
+    if (!mNode) MOZ_CRASH();
+  }
+
+  explicit sdnAccessible(NotNull<MsaaAccessible*> aMsaa) : mMsaa(aMsaa) {
+    Accessible* acc = aMsaa->Acc();
+    MOZ_ASSERT(acc);
+    if (LocalAccessible* localAcc = acc->AsLocal()) {
+      mNode = localAcc->GetNode();
+    }
+  }
+
+  ~sdnAccessible();
+
+  /**
+   * Return if the object is defunct.
+   */
+  bool IsDefunct() const {
+    if (mMsaa && !mMsaa->Acc()) {
+      return true;
+    }
+    if (!mNode) {
+      MOZ_ASSERT(mMsaa && mMsaa->Acc()->IsRemote());
+      return false;
+    }
+    return !GetDocument();
+  }
+
+  /**
+   * Return a local document accessible it belongs to if any.
+   */
+  DocAccessible* GetDocument() const;
+
+  /*
+   * Return associated MsaaAccessible if any.
+   */
+  MsaaAccessible* GetMsaa();
+
+  void SetUniqueID(uint32_t aNewUniqueId) { mUniqueId = Some(aNewUniqueId); }
+
+  Maybe<uint32_t> ReleaseUniqueID() {
+    Maybe<uint32_t> result = mUniqueId;
+    mUniqueId = Nothing();
+    return result;
+  }
+
+  // IUnknown
+  DECL_IUNKNOWN
+
+  virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_nodeInfo(
+      /* [out] */ BSTR __RPC_FAR* aNodeName,
+      /* [out] */ short __RPC_FAR* aNameSpaceID,
+      /* [out] */ BSTR __RPC_FAR* aNodeValue,
+      /* [out] */ unsigned int __RPC_FAR* aNumChildren,
+      /* [out] */ unsigned int __RPC_FAR* aUniqueID,
+      /* [out][retval] */ unsigned short __RPC_FAR* aNodeType);
+
+  virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_attributes(
+      /* [in] */ unsigned short aMaxAttribs,
+      /* [length_is][size_is][out] */ BSTR __RPC_FAR* aAttribNames,
+      /* [length_is][size_is][out] */ short __RPC_FAR* aNameSpaceIDs,
+      /* [length_is][size_is][out] */ BSTR __RPC_FAR* aAttribValues,
+      /* [out][retval] */ unsigned short __RPC_FAR* aNumAttribs);
+
+  virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_attributesForNames(
+      /* [in] */ unsigned short aMaxAttribs,
+      /* [length_is][size_is][in] */ BSTR __RPC_FAR* aAttribNames,
+      /* [length_is][size_is][in] */ short __RPC_FAR* aNameSpaceID,
+      /* [length_is][size_is][retval] */ BSTR __RPC_FAR* aAttribValues);
+
+  virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_computedStyle(
+      /* [in] */ unsigned short aMaxStyleProperties,
+      /* [in] */ boolean aUseAlternateView,
+      /* [length_is][size_is][out] */ BSTR __RPC_FAR* aStyleProperties,
+      /* [length_is][size_is][out] */ BSTR __RPC_FAR* aStyleValues,
+      /* [out][retval] */ unsigned short __RPC_FAR* aNumStyleProperties);
+
+  virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE
+  get_computedStyleForProperties(
+      /* [in] */ unsigned short aNumStyleProperties,
+      /* [in] */ boolean aUseAlternateView,
+      /* [length_is][size_is][in] */ BSTR __RPC_FAR* aStyleProperties,
+      /* [length_is][size_is][out][retval] */ BSTR __RPC_FAR* aStyleValues);
+
+  virtual HRESULT STDMETHODCALLTYPE scrollTo(/* [in] */ boolean aScrollTopLeft);
+
+  virtual /* [propget] */ HRESULT STDMETHODCALLTYPE get_parentNode(
+      /* [out][retval] */ ISimpleDOMNode __RPC_FAR* __RPC_FAR* aNode);
+
+  virtual /* [propget] */ HRESULT STDMETHODCALLTYPE get_firstChild(
+      /* [out][retval] */ ISimpleDOMNode __RPC_FAR* __RPC_FAR* aNode);
+
+  virtual /* [propget] */ HRESULT STDMETHODCALLTYPE get_lastChild(
+      /* [out][retval] */ ISimpleDOMNode __RPC_FAR* __RPC_FAR* aNode);
+
+  virtual /* [propget] */ HRESULT STDMETHODCALLTYPE get_previousSibling(
+      /* [out][retval] */ ISimpleDOMNode __RPC_FAR* __RPC_FAR* aNode);
+
+  virtual /* [propget] */ HRESULT STDMETHODCALLTYPE get_nextSibling(
+      /* [out][retval] */ ISimpleDOMNode __RPC_FAR* __RPC_FAR* aNode);
+
+  virtual /* [propget] */ HRESULT STDMETHODCALLTYPE get_childAt(
+      /* [in] */ unsigned aChildIndex,
+      /* [out][retval] */ ISimpleDOMNode __RPC_FAR* __RPC_FAR* aNode);
+
+  virtual /* [propget] */ HRESULT STDMETHODCALLTYPE get_innerHTML(
+      /* [out][retval] */ BSTR __RPC_FAR* aInnerHTML);
+
+  virtual /* [local][propget] */ HRESULT STDMETHODCALLTYPE get_localInterface(
+      /* [retval][out] */ void __RPC_FAR* __RPC_FAR* aLocalInterface);
+
+  virtual /* [propget] */ HRESULT STDMETHODCALLTYPE get_language(
+      /* [out][retval] */ BSTR __RPC_FAR* aLanguage);
+
+ private:
+  // mNode will be null for a RemoteAccessible. In that case, we only partially
+  // implement this interface using data from the RemoteAccessible cache.
+  nsCOMPtr<nsINode> mNode;
+  RefPtr<MsaaAccessible> mMsaa;
+  Maybe<uint32_t> mUniqueId;
+};
+
+}  // namespace a11y
+}  // namespace mozilla
+
+#endif  // mozilla_a11y_sdnAccessible_h_
diff --git a/accessible/windows/sdn/sdnDocAccessible.cpp b/accessible/windows/sdn/sdnDocAccessible.cpp
new file mode 100644
index 0000000000..e773f1a5a0
--- /dev/null
+++ b/accessible/windows/sdn/sdnDocAccessible.cpp
@@ -0,0 +1,117 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* 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 "sdnDocAccessible.h"
+
+#include "LocalAccessible-inl.h"
+#include "ISimpleDOM.h"
+
+#include "nsNameSpaceManager.h"
+
+using namespace mozilla;
+using namespace mozilla::a11y;
+
+////////////////////////////////////////////////////////////////////////////////
+// sdnDocAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+IMPL_IUNKNOWN_QUERY_HEAD(sdnDocAccessible)
+IMPL_IUNKNOWN_QUERY_IFACE(ISimpleDOMDocument)
+IMPL_IUNKNOWN_QUERY_TAIL_AGGREGATED(mMsaa)
+
+STDMETHODIMP
+sdnDocAccessible::get_URL(BSTR __RPC_FAR* aURL) {
+  if (!aURL) return E_INVALIDARG;
+  *aURL = nullptr;
+
+  DocAccessible* acc = mMsaa->DocAcc();
+  if (!acc) return CO_E_OBJNOTCONNECTED;
+
+  nsAutoString URL;
+  acc->URL(URL);
+  if (URL.IsEmpty()) return S_FALSE;
+
+  *aURL = ::SysAllocStringLen(URL.get(), URL.Length());
+  return *aURL ? S_OK : E_OUTOFMEMORY;
+}
+
+STDMETHODIMP
+sdnDocAccessible::get_title(BSTR __RPC_FAR* aTitle) {
+  if (!aTitle) return E_INVALIDARG;
+  *aTitle = nullptr;
+
+  DocAccessible* acc = mMsaa->DocAcc();
+  if (!acc) return CO_E_OBJNOTCONNECTED;
+
+  nsAutoString title;
+  acc->Title(title);
+  *aTitle = ::SysAllocStringLen(title.get(), title.Length());
+  return *aTitle ? S_OK : E_OUTOFMEMORY;
+}
+
+STDMETHODIMP
+sdnDocAccessible::get_mimeType(BSTR __RPC_FAR* aMimeType) {
+  if (!aMimeType) return E_INVALIDARG;
+  *aMimeType = nullptr;
+
+  DocAccessible* acc = mMsaa->DocAcc();
+  if (!acc) return CO_E_OBJNOTCONNECTED;
+
+  nsAutoString mimeType;
+  acc->MimeType(mimeType);
+  if (mimeType.IsEmpty()) return S_FALSE;
+
+  *aMimeType = ::SysAllocStringLen(mimeType.get(), mimeType.Length());
+  return *aMimeType ? S_OK : E_OUTOFMEMORY;
+}
+
+STDMETHODIMP
+sdnDocAccessible::get_docType(BSTR __RPC_FAR* aDocType) {
+  if (!aDocType) return E_INVALIDARG;
+  *aDocType = nullptr;
+
+  DocAccessible* acc = mMsaa->DocAcc();
+  if (!acc) return CO_E_OBJNOTCONNECTED;
+
+  nsAutoString docType;
+  acc->DocType(docType);
+  if (docType.IsEmpty()) return S_FALSE;
+
+  *aDocType = ::SysAllocStringLen(docType.get(), docType.Length());
+  return *aDocType ? S_OK : E_OUTOFMEMORY;
+}
+
+STDMETHODIMP
+sdnDocAccessible::get_nameSpaceURIForID(short aNameSpaceID,
+                                        BSTR __RPC_FAR* aNameSpaceURI) {
+  if (!aNameSpaceURI) return E_INVALIDARG;
+  *aNameSpaceURI = nullptr;
+
+  if (!mMsaa->DocAcc()) return CO_E_OBJNOTCONNECTED;
+
+  if (aNameSpaceID < 0) return E_INVALIDARG;  // -1 is kNameSpaceID_Unknown
+
+  nsAutoString nameSpaceURI;
+  nsNameSpaceManager* nameSpaceManager = nsNameSpaceManager::GetInstance();
+  if (nameSpaceManager)
+    nameSpaceManager->GetNameSpaceURI(aNameSpaceID, nameSpaceURI);
+
+  if (nameSpaceURI.IsEmpty()) return S_FALSE;
+
+  *aNameSpaceURI =
+      ::SysAllocStringLen(nameSpaceURI.get(), nameSpaceURI.Length());
+
+  return *aNameSpaceURI ? S_OK : E_OUTOFMEMORY;
+}
+
+STDMETHODIMP
+sdnDocAccessible::put_alternateViewMediaTypes(
+    BSTR __RPC_FAR* aCommaSeparatedMediaTypes) {
+  if (!aCommaSeparatedMediaTypes) return E_INVALIDARG;
+  *aCommaSeparatedMediaTypes = nullptr;
+
+  return !mMsaa->DocAcc() ? CO_E_OBJNOTCONNECTED : E_NOTIMPL;
+}
diff --git a/accessible/windows/sdn/sdnDocAccessible.h b/accessible/windows/sdn/sdnDocAccessible.h
new file mode 100644
index 0000000000..452b43ec85
--- /dev/null
+++ b/accessible/windows/sdn/sdnDocAccessible.h
@@ -0,0 +1,52 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#ifndef mozilla_a11y_sdnDocAccessible_h_
+#define mozilla_a11y_sdnDocAccessible_h_
+
+#include "ISimpleDOM.h"
+#include "IUnknownImpl.h"
+
+#include "MsaaDocAccessible.h"
+
+namespace mozilla {
+namespace a11y {
+
+class sdnDocAccessible final : public ISimpleDOMDocument {
+ public:
+  explicit sdnDocAccessible(MsaaDocAccessible* aMsaa) : mMsaa(aMsaa){};
+  ~sdnDocAccessible(){};
+
+  DECL_IUNKNOWN
+
+  // ISimpleDOMDocument
+  virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_URL(
+      /* [out] */ BSTR __RPC_FAR* url);
+
+  virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_title(
+      /* [out] */ BSTR __RPC_FAR* title);
+
+  virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_mimeType(
+      /* [out] */ BSTR __RPC_FAR* mimeType);
+
+  virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_docType(
+      /* [out] */ BSTR __RPC_FAR* docType);
+
+  virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_nameSpaceURIForID(
+      /* [in] */ short nameSpaceID,
+      /* [out] */ BSTR __RPC_FAR* nameSpaceURI);
+
+  virtual /* [id] */ HRESULT STDMETHODCALLTYPE put_alternateViewMediaTypes(
+      /* [in] */ BSTR __RPC_FAR* commaSeparatedMediaTypes);
+
+ protected:
+  RefPtr<MsaaDocAccessible> mMsaa;
+};
+
+}  // namespace a11y
+}  // namespace mozilla
+
+#endif
diff --git a/accessible/windows/sdn/sdnTextAccessible.cpp b/accessible/windows/sdn/sdnTextAccessible.cpp
new file mode 100644
index 0000000000..73ef4eb6e8
--- /dev/null
+++ b/accessible/windows/sdn/sdnTextAccessible.cpp
@@ -0,0 +1,166 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* 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 "sdnTextAccessible.h"
+
+#include "ISimpleDOM.h"
+
+#include "nsCoreUtils.h"
+#include "DocAccessible.h"
+
+#include "nsIFrame.h"
+#include "nsFontMetrics.h"
+#include "nsPresContext.h"
+#include "nsLayoutUtils.h"
+#include "nsRange.h"
+#include "gfxTextRun.h"
+#include "nsIAccessibleTypes.h"
+#include "mozilla/gfx/2D.h"
+
+using namespace mozilla::a11y;
+
+////////////////////////////////////////////////////////////////////////////////
+// sdnTextAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+IMPL_IUNKNOWN_QUERY_HEAD(sdnTextAccessible)
+IMPL_IUNKNOWN_QUERY_IFACE(ISimpleDOMText)
+IMPL_IUNKNOWN_QUERY_TAIL_AGGREGATED(mMsaa)
+
+STDMETHODIMP
+sdnTextAccessible::get_domText(BSTR __RPC_FAR* aText) {
+  if (!aText) return E_INVALIDARG;
+  *aText = nullptr;
+
+  AccessibleWrap* acc = mMsaa->LocalAcc();
+  if (!acc) return CO_E_OBJNOTCONNECTED;
+
+  nsAutoString nodeValue;
+
+  acc->GetContent()->GetNodeValue(nodeValue);
+  if (nodeValue.IsEmpty()) return S_FALSE;
+
+  *aText = ::SysAllocStringLen(nodeValue.get(), nodeValue.Length());
+  return *aText ? S_OK : E_OUTOFMEMORY;
+}
+
+STDMETHODIMP
+sdnTextAccessible::get_clippedSubstringBounds(
+    unsigned int aStartIndex, unsigned int aEndIndex, int __RPC_FAR* aX,
+    int __RPC_FAR* aY, int __RPC_FAR* aWidth, int __RPC_FAR* aHeight) {
+  nscoord x = 0, y = 0, width = 0, height = 0;
+  HRESULT rv = get_unclippedSubstringBounds(aStartIndex, aEndIndex, &x, &y,
+                                            &width, &height);
+  if (FAILED(rv)) return rv;
+
+  DocAccessible* document = mMsaa->LocalAcc()->Document();
+  NS_ASSERTION(
+      document,
+      "There must always be a doc accessible, but there isn't. Crash!");
+
+  LayoutDeviceIntRect docRect = document->Bounds();
+  LayoutDeviceIntRect unclippedRect(x, y, width, height);
+
+  LayoutDeviceIntRect clippedRect;
+  clippedRect.IntersectRect(unclippedRect, docRect);
+
+  *aX = clippedRect.X();
+  *aY = clippedRect.Y();
+  *aWidth = clippedRect.Width();
+  *aHeight = clippedRect.Height();
+  return S_OK;
+}
+
+STDMETHODIMP
+sdnTextAccessible::get_unclippedSubstringBounds(
+    unsigned int aStartIndex, unsigned int aEndIndex, int __RPC_FAR* aX,
+    int __RPC_FAR* aY, int __RPC_FAR* aWidth, int __RPC_FAR* aHeight) {
+  if (!aX || !aY || !aWidth || !aHeight) return E_INVALIDARG;
+  *aX = *aY = *aWidth = *aHeight = 0;
+
+  AccessibleWrap* acc = mMsaa->LocalAcc();
+  if (!acc) return CO_E_OBJNOTCONNECTED;
+
+  nsIFrame* frame = acc->GetFrame();
+  NS_ENSURE_TRUE(frame, E_FAIL);
+
+  nsPoint startPoint, endPoint;
+  nsIFrame* startFrame =
+      GetPointFromOffset(frame, aStartIndex, true, startPoint);
+  nsIFrame* endFrame = GetPointFromOffset(frame, aEndIndex, false, endPoint);
+  if (!startFrame || !endFrame) return E_FAIL;
+
+  nsRect sum;
+  nsIFrame* iter = startFrame;
+  nsIFrame* stopLoopFrame = endFrame->GetNextContinuation();
+  for (; iter != stopLoopFrame; iter = iter->GetNextContinuation()) {
+    nsRect rect = iter->GetScreenRectInAppUnits();
+    nscoord start = (iter == startFrame) ? startPoint.x : 0;
+    nscoord end = (iter == endFrame) ? endPoint.x : rect.Width();
+    rect.MoveByX(start);
+    rect.SetWidth(end - start);
+    sum.UnionRect(sum, rect);
+  }
+
+  nsPresContext* presContext = acc->Document()->PresContext();
+  *aX = presContext->AppUnitsToDevPixels(sum.X());
+  *aY = presContext->AppUnitsToDevPixels(sum.Y());
+  *aWidth = presContext->AppUnitsToDevPixels(sum.Width());
+  *aHeight = presContext->AppUnitsToDevPixels(sum.Height());
+
+  return S_OK;
+}
+
+STDMETHODIMP
+sdnTextAccessible::scrollToSubstring(unsigned int aStartIndex,
+                                     unsigned int aEndIndex) {
+  AccessibleWrap* acc = mMsaa->LocalAcc();
+  if (!acc) return CO_E_OBJNOTCONNECTED;
+
+  RefPtr<nsRange> range = nsRange::Create(acc->GetContent());
+  if (NS_FAILED(range->SetStart(acc->GetContent(), aStartIndex))) return E_FAIL;
+
+  if (NS_FAILED(range->SetEnd(acc->GetContent(), aEndIndex))) return E_FAIL;
+
+  nsresult rv = nsCoreUtils::ScrollSubstringTo(
+      acc->GetFrame(), range, nsIAccessibleScrollType::SCROLL_TYPE_ANYWHERE);
+  return GetHRESULT(rv);
+}
+
+STDMETHODIMP
+sdnTextAccessible::get_fontFamily(BSTR __RPC_FAR* aFontFamily) {
+  if (!aFontFamily) return E_INVALIDARG;
+  *aFontFamily = nullptr;
+
+  AccessibleWrap* acc = mMsaa->LocalAcc();
+  if (!acc) return CO_E_OBJNOTCONNECTED;
+
+  nsIFrame* frame = acc->GetFrame();
+  if (!frame) return E_FAIL;
+
+  RefPtr<nsFontMetrics> fm = nsLayoutUtils::GetFontMetricsForFrame(frame, 1.0f);
+  RefPtr<gfxFont> font = fm->GetThebesFontGroup()->GetFirstValidFont();
+
+  const nsCString& name = font->GetName();
+  if (name.IsEmpty()) return S_FALSE;
+
+  NS_ConvertUTF8toUTF16 str(name);
+  *aFontFamily = ::SysAllocStringLen(str.get(), str.Length());
+  return *aFontFamily ? S_OK : E_OUTOFMEMORY;
+}
+
+nsIFrame* sdnTextAccessible::GetPointFromOffset(nsIFrame* aContainingFrame,
+                                                int32_t aOffset,
+                                                bool aPreferNext,
+                                                nsPoint& aOutPoint) {
+  nsIFrame* textFrame = nullptr;
+  int32_t outOffset;
+  aContainingFrame->GetChildFrameContainingOffset(aOffset, aPreferNext,
+                                                  &outOffset, &textFrame);
+  if (textFrame) textFrame->GetPointFromOffset(aOffset, &aOutPoint);
+
+  return textFrame;
+}
diff --git a/accessible/windows/sdn/sdnTextAccessible.h b/accessible/windows/sdn/sdnTextAccessible.h
new file mode 100644
index 0000000000..3f93c20fcc
--- /dev/null
+++ b/accessible/windows/sdn/sdnTextAccessible.h
@@ -0,0 +1,69 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#ifndef mozilla_a11y_sdnTextAccessible_h_
+#define mozilla_a11y_sdnTextAccessible_h_
+
+#include "ISimpleDOM.h"
+#include "IUnknownImpl.h"
+
+#include "MsaaAccessible.h"
+
+class nsIFrame;
+struct nsPoint;
+
+namespace mozilla {
+namespace a11y {
+
+class sdnTextAccessible final : public ISimpleDOMText {
+ public:
+  explicit sdnTextAccessible(MsaaAccessible* aMsaa) : mMsaa(aMsaa){};
+  ~sdnTextAccessible() {}
+
+  DECL_IUNKNOWN
+
+  // ISimpleDOMText
+
+  virtual /* [propget] */ HRESULT STDMETHODCALLTYPE get_domText(
+      /* [retval][out] */ BSTR __RPC_FAR* aText);
+
+  virtual HRESULT STDMETHODCALLTYPE get_clippedSubstringBounds(
+      /* [in] */ unsigned int startIndex,
+      /* [in] */ unsigned int endIndex,
+      /* [out] */ int __RPC_FAR* aX,
+      /* [out] */ int __RPC_FAR* aY,
+      /* [out] */ int __RPC_FAR* aWidth,
+      /* [out] */ int __RPC_FAR* aHeight);
+
+  virtual HRESULT STDMETHODCALLTYPE get_unclippedSubstringBounds(
+      /* [in] */ unsigned int aStartIndex,
+      /* [in] */ unsigned int aEndIndex,
+      /* [out] */ int __RPC_FAR* aX,
+      /* [out] */ int __RPC_FAR* aY,
+      /* [out] */ int __RPC_FAR* aWidth,
+      /* [out] */ int __RPC_FAR* aHeight);
+
+  virtual HRESULT STDMETHODCALLTYPE scrollToSubstring(
+      /* [in] */ unsigned int aStartIndex,
+      /* [in] */ unsigned int aEndIndex);
+
+  virtual /* [propget] */ HRESULT STDMETHODCALLTYPE get_fontFamily(
+      /* [retval][out] */ BSTR __RPC_FAR* aFontFamily);
+
+ private:
+  /**
+   *  Return child frame containing offset on success.
+   */
+  nsIFrame* GetPointFromOffset(nsIFrame* aContainingFrame, int32_t aOffset,
+                               bool aPreferNext, nsPoint& aOutPoint);
+
+  RefPtr<MsaaAccessible> mMsaa;
+};
+
+}  // namespace a11y
+}  // namespace mozilla
+
+#endif