Adding upstream version 124.0.1.upstream/124.0.1

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

1 files changed, 1305 insertions, 0 deletions

diff --git a/accessible/atk/AccessibleWrap.cpp b/accessible/atk/AccessibleWrap.cpp
new file mode 100644
index 0000000000..98f303ee4a
--- /dev/null
+++ b/accessible/atk/AccessibleWrap.cpp
@@ -0,0 +1,1305 @@
+/* -*- 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 "AccessibleWrap.h"
+
+#include "LocalAccessible-inl.h"
+#include "AccAttributes.h"
+#include "ApplicationAccessibleWrap.h"
+#include "InterfaceInitFuncs.h"
+#include "nsAccUtils.h"
+#include "mozilla/a11y/PDocAccessible.h"
+#include "OuterDocAccessible.h"
+#include "RemoteAccessible.h"
+#include "DocAccessibleParent.h"
+#include "RootAccessible.h"
+#include "mozilla/a11y/TableAccessible.h"
+#include "mozilla/a11y/TableCellAccessible.h"
+#include "nsMai.h"
+#include "nsMaiHyperlink.h"
+#include "nsString.h"
+#include "nsStateMap.h"
+#include "mozilla/a11y/Platform.h"
+#include "Relation.h"
+#include "RootAccessible.h"
+#include "States.h"
+#include "nsISimpleEnumerator.h"
+
+#include "mozilla/ArrayUtils.h"
+#include "mozilla/Sprintf.h"
+#include "nsAccessibilityService.h"
+#include "nsComponentManagerUtils.h"
+
+using namespace mozilla;
+using namespace mozilla::a11y;
+
+MaiAtkObject::EAvailableAtkSignals MaiAtkObject::gAvailableAtkSignals =
+    eUnknown;
+
+// defined in ApplicationAccessibleWrap.cpp
+extern "C" GType g_atk_hyperlink_impl_type;
+
+/* MaiAtkObject */
+
+enum {
+  ACTIVATE,
+  CREATE,
+  DEACTIVATE,
+  DESTROY,
+  MAXIMIZE,
+  MINIMIZE,
+  RESIZE,
+  RESTORE,
+  LAST_SIGNAL
+};
+
+enum MaiInterfaceType {
+  MAI_INTERFACE_COMPONENT, /* 0 */
+  MAI_INTERFACE_ACTION,
+  MAI_INTERFACE_VALUE,
+  MAI_INTERFACE_EDITABLE_TEXT,
+  MAI_INTERFACE_HYPERTEXT,
+  MAI_INTERFACE_HYPERLINK_IMPL,
+  MAI_INTERFACE_SELECTION,
+  MAI_INTERFACE_TABLE,
+  MAI_INTERFACE_TEXT,
+  MAI_INTERFACE_DOCUMENT,
+  MAI_INTERFACE_IMAGE, /* 10 */
+  MAI_INTERFACE_TABLE_CELL
+};
+
+static GType GetAtkTypeForMai(MaiInterfaceType type) {
+  switch (type) {
+    case MAI_INTERFACE_COMPONENT:
+      return ATK_TYPE_COMPONENT;
+    case MAI_INTERFACE_ACTION:
+      return ATK_TYPE_ACTION;
+    case MAI_INTERFACE_VALUE:
+      return ATK_TYPE_VALUE;
+    case MAI_INTERFACE_EDITABLE_TEXT:
+      return ATK_TYPE_EDITABLE_TEXT;
+    case MAI_INTERFACE_HYPERTEXT:
+      return ATK_TYPE_HYPERTEXT;
+    case MAI_INTERFACE_HYPERLINK_IMPL:
+      return g_atk_hyperlink_impl_type;
+    case MAI_INTERFACE_SELECTION:
+      return ATK_TYPE_SELECTION;
+    case MAI_INTERFACE_TABLE:
+      return ATK_TYPE_TABLE;
+    case MAI_INTERFACE_TEXT:
+      return ATK_TYPE_TEXT;
+    case MAI_INTERFACE_DOCUMENT:
+      return ATK_TYPE_DOCUMENT;
+    case MAI_INTERFACE_IMAGE:
+      return ATK_TYPE_IMAGE;
+    case MAI_INTERFACE_TABLE_CELL:
+      MOZ_ASSERT(false);
+  }
+  return G_TYPE_INVALID;
+}
+
+#define NON_USER_EVENT ":system"
+
+// The atk interfaces we can expose without checking what version of ATK we are
+// dealing with.  At the moment AtkTableCell is the only interface we can't
+// always expose.
+static const GInterfaceInfo atk_if_infos[] = {
+    {(GInterfaceInitFunc)componentInterfaceInitCB,
+     (GInterfaceFinalizeFunc) nullptr, nullptr},
+    {(GInterfaceInitFunc)actionInterfaceInitCB,
+     (GInterfaceFinalizeFunc) nullptr, nullptr},
+    {(GInterfaceInitFunc)valueInterfaceInitCB, (GInterfaceFinalizeFunc) nullptr,
+     nullptr},
+    {(GInterfaceInitFunc)editableTextInterfaceInitCB,
+     (GInterfaceFinalizeFunc) nullptr, nullptr},
+    {(GInterfaceInitFunc)hypertextInterfaceInitCB,
+     (GInterfaceFinalizeFunc) nullptr, nullptr},
+    {(GInterfaceInitFunc)hyperlinkImplInterfaceInitCB,
+     (GInterfaceFinalizeFunc) nullptr, nullptr},
+    {(GInterfaceInitFunc)selectionInterfaceInitCB,
+     (GInterfaceFinalizeFunc) nullptr, nullptr},
+    {(GInterfaceInitFunc)tableInterfaceInitCB, (GInterfaceFinalizeFunc) nullptr,
+     nullptr},
+    {(GInterfaceInitFunc)textInterfaceInitCB, (GInterfaceFinalizeFunc) nullptr,
+     nullptr},
+    {(GInterfaceInitFunc)documentInterfaceInitCB,
+     (GInterfaceFinalizeFunc) nullptr, nullptr},
+    {(GInterfaceInitFunc)imageInterfaceInitCB, (GInterfaceFinalizeFunc) nullptr,
+     nullptr}};
+
+static GQuark quark_mai_hyperlink = 0;
+
+AtkHyperlink* MaiAtkObject::GetAtkHyperlink() {
+  NS_ASSERTION(quark_mai_hyperlink, "quark_mai_hyperlink not initialized");
+  MaiHyperlink* maiHyperlink =
+      (MaiHyperlink*)g_object_get_qdata(G_OBJECT(this), quark_mai_hyperlink);
+  if (!maiHyperlink) {
+    maiHyperlink = new MaiHyperlink(acc);
+    g_object_set_qdata(G_OBJECT(this), quark_mai_hyperlink, maiHyperlink);
+  }
+
+  return maiHyperlink->GetAtkHyperlink();
+}
+
+void MaiAtkObject::Shutdown() {
+  acc = nullptr;
+  MaiHyperlink* maiHyperlink =
+      (MaiHyperlink*)g_object_get_qdata(G_OBJECT(this), quark_mai_hyperlink);
+  if (maiHyperlink) {
+    delete maiHyperlink;
+    g_object_set_qdata(G_OBJECT(this), quark_mai_hyperlink, nullptr);
+  }
+}
+
+struct MaiAtkObjectClass {
+  AtkObjectClass parent_class;
+};
+
+static guint mai_atk_object_signals[LAST_SIGNAL] = {
+    0,
+};
+
+static void MaybeFireNameChange(AtkObject* aAtkObj, const nsString& aNewName);
+
+G_BEGIN_DECLS
+/* callbacks for MaiAtkObject */
+static void classInitCB(AtkObjectClass* aClass);
+static void initializeCB(AtkObject* aAtkObj, gpointer aData);
+static void finalizeCB(GObject* aObj);
+
+/* callbacks for AtkObject virtual functions */
+static const gchar* getNameCB(AtkObject* aAtkObj);
+/* getDescriptionCB is also used by image interface */
+const gchar* getDescriptionCB(AtkObject* aAtkObj);
+static AtkRole getRoleCB(AtkObject* aAtkObj);
+static AtkAttributeSet* getAttributesCB(AtkObject* aAtkObj);
+static const gchar* GetLocaleCB(AtkObject*);
+static AtkObject* getParentCB(AtkObject* aAtkObj);
+static gint getChildCountCB(AtkObject* aAtkObj);
+static AtkObject* refChildCB(AtkObject* aAtkObj, gint aChildIndex);
+static gint getIndexInParentCB(AtkObject* aAtkObj);
+static AtkStateSet* refStateSetCB(AtkObject* aAtkObj);
+static AtkRelationSet* refRelationSetCB(AtkObject* aAtkObj);
+
+/* the missing atkobject virtual functions */
+/*
+  static AtkLayer            getLayerCB(AtkObject *aAtkObj);
+  static gint                getMdiZorderCB(AtkObject *aAtkObj);
+  static void                SetNameCB(AtkObject *aAtkObj,
+  const gchar *name);
+  static void                SetDescriptionCB(AtkObject *aAtkObj,
+  const gchar *description);
+  static void                SetParentCB(AtkObject *aAtkObj,
+  AtkObject *parent);
+  static void                SetRoleCB(AtkObject *aAtkObj,
+  AtkRole role);
+  static guint               ConnectPropertyChangeHandlerCB(
+  AtkObject  *aObj,
+  AtkPropertyChangeHandler *handler);
+  static void                RemovePropertyChangeHandlerCB(
+  AtkObject *aAtkObj,
+  guint handler_id);
+  static void                InitializeCB(AtkObject *aAtkObj,
+  gpointer data);
+  static void                ChildrenChangedCB(AtkObject *aAtkObj,
+  guint change_index,
+  gpointer changed_child);
+  static void                FocusEventCB(AtkObject *aAtkObj,
+  gboolean focus_in);
+  static void                PropertyChangeCB(AtkObject *aAtkObj,
+  AtkPropertyValues *values);
+  static void                StateChangeCB(AtkObject *aAtkObj,
+  const gchar *name,
+  gboolean state_set);
+  static void                VisibleDataChangedCB(AtkObject *aAtkObj);
+*/
+G_END_DECLS
+
+static GType GetMaiAtkType(uint16_t interfacesBits);
+static const char* GetUniqueMaiAtkTypeName(uint16_t interfacesBits);
+
+static gpointer parent_class = nullptr;
+
+GType mai_atk_object_get_type(void) {
+  static GType type = 0;
+
+  if (!type) {
+    static const GTypeInfo tinfo = {
+        sizeof(MaiAtkObjectClass),
+        (GBaseInitFunc) nullptr,
+        (GBaseFinalizeFunc) nullptr,
+        (GClassInitFunc)classInitCB,
+        (GClassFinalizeFunc) nullptr,
+        nullptr,              /* class data */
+        sizeof(MaiAtkObject), /* instance size */
+        0,                    /* nb preallocs */
+        (GInstanceInitFunc) nullptr,
+        nullptr /* value table */
+    };
+
+    type = g_type_register_static(ATK_TYPE_OBJECT, "MaiAtkObject", &tinfo,
+                                  GTypeFlags(0));
+    quark_mai_hyperlink = g_quark_from_static_string("MaiHyperlink");
+  }
+  return type;
+}
+
+AccessibleWrap::AccessibleWrap(nsIContent* aContent, DocAccessible* aDoc)
+    : LocalAccessible(aContent, aDoc), mAtkObject(nullptr) {}
+
+AccessibleWrap::~AccessibleWrap() {
+  NS_ASSERTION(!mAtkObject, "ShutdownAtkObject() is not called");
+}
+
+void AccessibleWrap::ShutdownAtkObject() {
+  if (!mAtkObject) return;
+
+  NS_ASSERTION(IS_MAI_OBJECT(mAtkObject), "wrong type of atk object");
+  if (IS_MAI_OBJECT(mAtkObject)) MAI_ATK_OBJECT(mAtkObject)->Shutdown();
+
+  g_object_unref(mAtkObject);
+  mAtkObject = nullptr;
+}
+
+void AccessibleWrap::Shutdown() {
+  ShutdownAtkObject();
+  LocalAccessible::Shutdown();
+}
+
+void AccessibleWrap::GetNativeInterface(void** aOutAccessible) {
+  *aOutAccessible = nullptr;
+
+  if (!mAtkObject) {
+    if (IsDefunct() || IsText()) {
+      // We don't create ATK objects for node which has been shutdown or
+      // plain text leaves
+      return;
+    }
+
+    GType type = GetMaiAtkType(CreateMaiInterfaces());
+    if (!type) return;
+
+    mAtkObject = reinterpret_cast<AtkObject*>(g_object_new(type, nullptr));
+    if (!mAtkObject) return;
+
+    atk_object_initialize(mAtkObject, static_cast<Accessible*>(this));
+    mAtkObject->role = ATK_ROLE_INVALID;
+    mAtkObject->layer = ATK_LAYER_INVALID;
+  }
+
+  *aOutAccessible = mAtkObject;
+}
+
+AtkObject* AccessibleWrap::GetAtkObject(void) {
+  void* atkObj = nullptr;
+  GetNativeInterface(&atkObj);
+  return static_cast<AtkObject*>(atkObj);
+}
+
+// Get AtkObject from LocalAccessible interface
+/* static */
+AtkObject* AccessibleWrap::GetAtkObject(LocalAccessible* acc) {
+  void* atkObjPtr = nullptr;
+  acc->GetNativeInterface(&atkObjPtr);
+  return atkObjPtr ? ATK_OBJECT(atkObjPtr) : nullptr;
+}
+
+/* private */
+uint16_t AccessibleWrap::CreateMaiInterfaces(void) {
+  uint16_t interfacesBits = 0;
+
+  // The Component interface is supported by all accessibles.
+  interfacesBits |= 1 << MAI_INTERFACE_COMPONENT;
+
+  // Add Action interface if the action count is more than zero.
+  if (ActionCount() > 0) interfacesBits |= 1 << MAI_INTERFACE_ACTION;
+
+  // Text, Editabletext, and Hypertext interface.
+  HyperTextAccessible* hyperText = AsHyperText();
+  if (hyperText && hyperText->IsTextRole()) {
+    interfacesBits |= 1 << MAI_INTERFACE_TEXT;
+    interfacesBits |= 1 << MAI_INTERFACE_EDITABLE_TEXT;
+    if (!nsAccUtils::MustPrune(this)) {
+      interfacesBits |= 1 << MAI_INTERFACE_HYPERTEXT;
+    }
+  }
+
+  // Value interface.
+  if (HasNumericValue()) interfacesBits |= 1 << MAI_INTERFACE_VALUE;
+
+  // Document interface.
+  if (IsDoc()) interfacesBits |= 1 << MAI_INTERFACE_DOCUMENT;
+
+  if (IsImage()) interfacesBits |= 1 << MAI_INTERFACE_IMAGE;
+
+  // HyperLink interface.
+  if (IsLink()) interfacesBits |= 1 << MAI_INTERFACE_HYPERLINK_IMPL;
+
+  if (!nsAccUtils::MustPrune(this)) {  // These interfaces require children
+    // Table interface.
+    if (AsTable()) interfacesBits |= 1 << MAI_INTERFACE_TABLE;
+
+    if (AsTableCell()) interfacesBits |= 1 << MAI_INTERFACE_TABLE_CELL;
+
+    // Selection interface.
+    if (IsSelect()) {
+      interfacesBits |= 1 << MAI_INTERFACE_SELECTION;
+    }
+  }
+
+  return interfacesBits;
+}
+
+static GType GetMaiAtkType(uint16_t interfacesBits) {
+  GType type;
+  static const GTypeInfo tinfo = {
+      sizeof(MaiAtkObjectClass),
+      (GBaseInitFunc) nullptr,
+      (GBaseFinalizeFunc) nullptr,
+      (GClassInitFunc) nullptr,
+      (GClassFinalizeFunc) nullptr,
+      nullptr,              /* class data */
+      sizeof(MaiAtkObject), /* instance size */
+      0,                    /* nb preallocs */
+      (GInstanceInitFunc) nullptr,
+      nullptr /* value table */
+  };
+
+  /*
+   * The members we use to register GTypes are GetAtkTypeForMai
+   * and atk_if_infos, which are constant values to each MaiInterface
+   * So we can reuse the registered GType when having
+   * the same MaiInterface types.
+   */
+  const char* atkTypeName = GetUniqueMaiAtkTypeName(interfacesBits);
+  type = g_type_from_name(atkTypeName);
+  if (type) {
+    return type;
+  }
+
+  /*
+   * gobject limits the number of types that can directly derive from any
+   * given object type to 4095.
+   */
+  static uint16_t typeRegCount = 0;
+  if (typeRegCount++ >= 4095) {
+    return G_TYPE_INVALID;
+  }
+  type = g_type_register_static(MAI_TYPE_ATK_OBJECT, atkTypeName, &tinfo,
+                                GTypeFlags(0));
+
+  for (uint32_t index = 0; index < ArrayLength(atk_if_infos); index++) {
+    if (interfacesBits & (1 << index)) {
+      g_type_add_interface_static(type,
+                                  GetAtkTypeForMai((MaiInterfaceType)index),
+                                  &atk_if_infos[index]);
+    }
+  }
+
+  // Special case AtkTableCell so we can check what version of Atk we are
+  // dealing with.
+  if (IsAtkVersionAtLeast(2, 12) &&
+      (interfacesBits & (1 << MAI_INTERFACE_TABLE_CELL))) {
+    const GInterfaceInfo cellInfo = {
+        (GInterfaceInitFunc)tableCellInterfaceInitCB,
+        (GInterfaceFinalizeFunc) nullptr, nullptr};
+    g_type_add_interface_static(type, gAtkTableCellGetTypeFunc(), &cellInfo);
+  }
+
+  return type;
+}
+
+static const char* GetUniqueMaiAtkTypeName(uint16_t interfacesBits) {
+#define MAI_ATK_TYPE_NAME_LEN (30) /* 10+sizeof(uint16_t)*8/4+1 < 30 */
+
+  static gchar namePrefix[] = "MaiAtkType"; /* size = 10 */
+  static gchar name[MAI_ATK_TYPE_NAME_LEN + 1];
+
+  SprintfLiteral(name, "%s%x", namePrefix, interfacesBits);
+  name[MAI_ATK_TYPE_NAME_LEN] = '\0';
+
+  return name;
+}
+
+bool AccessibleWrap::IsValidObject() {
+  // to ensure we are not shut down
+  return !IsDefunct();
+}
+
+/* static functions for ATK callbacks */
+void classInitCB(AtkObjectClass* aClass) {
+  GObjectClass* gobject_class = G_OBJECT_CLASS(aClass);
+
+  parent_class = g_type_class_peek_parent(aClass);
+
+  aClass->get_name = getNameCB;
+  aClass->get_description = getDescriptionCB;
+  aClass->get_parent = getParentCB;
+  aClass->get_n_children = getChildCountCB;
+  aClass->ref_child = refChildCB;
+  aClass->get_index_in_parent = getIndexInParentCB;
+  aClass->get_role = getRoleCB;
+  aClass->get_attributes = getAttributesCB;
+  aClass->get_object_locale = GetLocaleCB;
+  aClass->ref_state_set = refStateSetCB;
+  aClass->ref_relation_set = refRelationSetCB;
+
+  aClass->initialize = initializeCB;
+
+  gobject_class->finalize = finalizeCB;
+
+  mai_atk_object_signals[ACTIVATE] = g_signal_new(
+      "activate", MAI_TYPE_ATK_OBJECT, G_SIGNAL_RUN_LAST,
+      0, /* default signal handler */
+      nullptr, nullptr, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
+  mai_atk_object_signals[CREATE] = g_signal_new(
+      "create", MAI_TYPE_ATK_OBJECT, G_SIGNAL_RUN_LAST,
+      0, /* default signal handler */
+      nullptr, nullptr, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
+  mai_atk_object_signals[DEACTIVATE] = g_signal_new(
+      "deactivate", MAI_TYPE_ATK_OBJECT, G_SIGNAL_RUN_LAST,
+      0, /* default signal handler */
+      nullptr, nullptr, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
+  mai_atk_object_signals[DESTROY] = g_signal_new(
+      "destroy", MAI_TYPE_ATK_OBJECT, G_SIGNAL_RUN_LAST,
+      0, /* default signal handler */
+      nullptr, nullptr, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
+  mai_atk_object_signals[MAXIMIZE] = g_signal_new(
+      "maximize", MAI_TYPE_ATK_OBJECT, G_SIGNAL_RUN_LAST,
+      0, /* default signal handler */
+      nullptr, nullptr, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
+  mai_atk_object_signals[MINIMIZE] = g_signal_new(
+      "minimize", MAI_TYPE_ATK_OBJECT, G_SIGNAL_RUN_LAST,
+      0, /* default signal handler */
+      nullptr, nullptr, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
+  mai_atk_object_signals[RESIZE] = g_signal_new(
+      "resize", MAI_TYPE_ATK_OBJECT, G_SIGNAL_RUN_LAST,
+      0, /* default signal handler */
+      nullptr, nullptr, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
+  mai_atk_object_signals[RESTORE] = g_signal_new(
+      "restore", MAI_TYPE_ATK_OBJECT, G_SIGNAL_RUN_LAST,
+      0, /* default signal handler */
+      nullptr, nullptr, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
+}
+
+void initializeCB(AtkObject* aAtkObj, gpointer aData) {
+  NS_ASSERTION((IS_MAI_OBJECT(aAtkObj)), "Invalid AtkObject");
+  NS_ASSERTION(aData, "Invalid Data to init AtkObject");
+  if (!aAtkObj || !aData) return;
+
+  /* call parent init function */
+  /* AtkObjectClass has not a "initialize" function now,
+   * maybe it has later
+   */
+
+  if (ATK_OBJECT_CLASS(parent_class)->initialize) {
+    ATK_OBJECT_CLASS(parent_class)->initialize(aAtkObj, aData);
+  }
+
+  /* initialize object */
+  MAI_ATK_OBJECT(aAtkObj)->acc = static_cast<Accessible*>(aData);
+}
+
+void finalizeCB(GObject* aObj) {
+  if (!IS_MAI_OBJECT(aObj)) return;
+  NS_ASSERTION(!MAI_ATK_OBJECT(aObj)->acc, "acc NOT null");
+
+  // call parent finalize function
+  // finalize of GObjectClass will unref the accessible parent if has
+  if (G_OBJECT_CLASS(parent_class)->finalize) {
+    G_OBJECT_CLASS(parent_class)->finalize(aObj);
+  }
+}
+
+const gchar* getNameCB(AtkObject* aAtkObj) {
+  nsAutoString name;
+  if (Accessible* acc = GetInternalObj(aAtkObj)) {
+    acc->Name(name);
+  } else {
+    return nullptr;
+  }
+
+  // XXX Firing an event from here does not seem right
+  MaybeFireNameChange(aAtkObj, name);
+
+  return aAtkObj->name;
+}
+
+static void MaybeFireNameChange(AtkObject* aAtkObj, const nsString& aNewName) {
+  NS_ConvertUTF16toUTF8 newNameUTF8(aNewName);
+  if (aAtkObj->name && !strcmp(aAtkObj->name, newNameUTF8.get())) return;
+
+  // Below we duplicate the functionality of atk_object_set_name(),
+  // but without calling atk_object_get_name(). Instead of
+  // atk_object_get_name() we directly access aAtkObj->name. This is because
+  // atk_object_get_name() would call getNameCB() which would call
+  // MaybeFireNameChange() (or atk_object_set_name() before this problem was
+  // fixed) and we would get an infinite recursion.
+  // See http://bugzilla.mozilla.org/733712
+
+  // Do not notify for initial name setting.
+  // See bug http://bugzilla.gnome.org/665870
+  bool notify = !!aAtkObj->name;
+
+  free(aAtkObj->name);
+  aAtkObj->name = strdup(newNameUTF8.get());
+
+  if (notify) g_object_notify(G_OBJECT(aAtkObj), "accessible-name");
+}
+
+const gchar* getDescriptionCB(AtkObject* aAtkObj) {
+  nsAutoString uniDesc;
+  if (Accessible* acc = GetInternalObj(aAtkObj)) {
+    acc->Description(uniDesc);
+  } else {
+    return nullptr;
+  }
+
+  NS_ConvertUTF8toUTF16 objDesc(aAtkObj->description);
+  if (!uniDesc.Equals(objDesc)) {
+    atk_object_set_description(aAtkObj, NS_ConvertUTF16toUTF8(uniDesc).get());
+  }
+
+  return aAtkObj->description;
+}
+
+AtkRole getRoleCB(AtkObject* aAtkObj) {
+  if (aAtkObj->role != ATK_ROLE_INVALID) return aAtkObj->role;
+
+  Accessible* acc = GetInternalObj(aAtkObj);
+  if (!acc) {
+    return ATK_ROLE_INVALID;
+  }
+
+#ifdef DEBUG
+  if (AccessibleWrap* accWrap = GetAccessibleWrap(aAtkObj)) {
+    NS_ASSERTION(nsAccUtils::IsTextInterfaceSupportCorrect(accWrap),
+                 "Does not support Text interface when it should");
+  }
+#endif
+
+#define ROLE(geckoRole, stringRole, ariaRole, atkRole, macRole, macSubrole, \
+             msaaRole, ia2Role, androidClass, nameRule)                     \
+  case roles::geckoRole:                                                    \
+    aAtkObj->role = atkRole;                                                \
+    break;
+
+  switch (acc->Role()) {
+#include "RoleMap.h"
+    default:
+      MOZ_CRASH("Unknown role.");
+  }
+
+#undef ROLE
+
+  if (aAtkObj->role == ATK_ROLE_LIST_BOX && !IsAtkVersionAtLeast(2, 1)) {
+    aAtkObj->role = ATK_ROLE_LIST;
+  } else if (aAtkObj->role == ATK_ROLE_TABLE_ROW &&
+             !IsAtkVersionAtLeast(2, 1)) {
+    aAtkObj->role = ATK_ROLE_LIST_ITEM;
+  } else if (aAtkObj->role == ATK_ROLE_MATH && !IsAtkVersionAtLeast(2, 12)) {
+    aAtkObj->role = ATK_ROLE_SECTION;
+  } else if (aAtkObj->role == ATK_ROLE_COMMENT && !IsAtkVersionAtLeast(2, 12)) {
+    aAtkObj->role = ATK_ROLE_SECTION;
+  } else if (aAtkObj->role == ATK_ROLE_LANDMARK &&
+             !IsAtkVersionAtLeast(2, 12)) {
+    aAtkObj->role = ATK_ROLE_SECTION;
+  } else if (aAtkObj->role == ATK_ROLE_FOOTNOTE &&
+             !IsAtkVersionAtLeast(2, 25, 2)) {
+    aAtkObj->role = ATK_ROLE_SECTION;
+  } else if (aAtkObj->role == ATK_ROLE_STATIC && !IsAtkVersionAtLeast(2, 16)) {
+    aAtkObj->role = ATK_ROLE_TEXT;
+  } else if ((aAtkObj->role == ATK_ROLE_MATH_FRACTION ||
+              aAtkObj->role == ATK_ROLE_MATH_ROOT) &&
+             !IsAtkVersionAtLeast(2, 16)) {
+    aAtkObj->role = ATK_ROLE_SECTION;
+  } else if (aAtkObj->role == ATK_ROLE_MARK && !IsAtkVersionAtLeast(2, 36)) {
+    aAtkObj->role = ATK_ROLE_TEXT;
+  } else if (aAtkObj->role == ATK_ROLE_SUGGESTION &&
+             !IsAtkVersionAtLeast(2, 36)) {
+    aAtkObj->role = ATK_ROLE_SECTION;
+  } else if (aAtkObj->role == ATK_ROLE_COMMENT && !IsAtkVersionAtLeast(2, 36)) {
+    aAtkObj->role = ATK_ROLE_SECTION;
+  } else if ((aAtkObj->role == ATK_ROLE_CONTENT_DELETION ||
+              aAtkObj->role == ATK_ROLE_CONTENT_INSERTION) &&
+             !IsAtkVersionAtLeast(2, 34)) {
+    aAtkObj->role = ATK_ROLE_SECTION;
+  }
+
+  return aAtkObj->role;
+}
+
+static AtkAttributeSet* ConvertToAtkAttributeSet(AccAttributes* aAttributes) {
+  if (!aAttributes) {
+    return nullptr;
+  }
+
+  AtkAttributeSet* objAttributeSet = nullptr;
+
+  for (auto iter : *aAttributes) {
+    nsAutoString name;
+    iter.NameAsString(name);
+    if (name.Equals(u"placeholder")) {
+      name.AssignLiteral(u"placeholder-text");
+    }
+
+    nsAutoString value;
+    iter.ValueAsString(value);
+
+    AtkAttribute* objAttr = (AtkAttribute*)g_malloc(sizeof(AtkAttribute));
+    objAttr->name = g_strdup(NS_ConvertUTF16toUTF8(name).get());
+    objAttr->value = g_strdup(NS_ConvertUTF16toUTF8(value).get());
+    objAttributeSet = g_slist_prepend(objAttributeSet, objAttr);
+  }
+
+  // libspi will free it
+  return objAttributeSet;
+}
+
+AtkAttributeSet* getAttributesCB(AtkObject* aAtkObj) {
+  Accessible* acc = GetInternalObj(aAtkObj);
+  if (!acc) {
+    return nullptr;
+  }
+  RefPtr<AccAttributes> attributes = acc->Attributes();
+  return ConvertToAtkAttributeSet(attributes);
+}
+
+const gchar* GetLocaleCB(AtkObject* aAtkObj) {
+  Accessible* acc = GetInternalObj(aAtkObj);
+  if (!acc) {
+    return nullptr;
+  }
+
+  nsAutoString locale;
+  acc->Language(locale);
+  return AccessibleWrap::ReturnString(locale);
+}
+
+AtkObject* getParentCB(AtkObject* aAtkObj) {
+  if (aAtkObj->accessible_parent) return aAtkObj->accessible_parent;
+
+  Accessible* acc = GetInternalObj(aAtkObj);
+  if (!acc) {
+    return nullptr;
+  }
+
+  Accessible* parent = acc->Parent();
+  AtkObject* atkParent = parent ? GetWrapperFor(parent) : nullptr;
+  if (atkParent) atk_object_set_parent(aAtkObj, atkParent);
+
+  return aAtkObj->accessible_parent;
+}
+
+gint getChildCountCB(AtkObject* aAtkObj) {
+  Accessible* acc = GetInternalObj(aAtkObj);
+  if (!acc || nsAccUtils::MustPrune(acc)) {
+    return 0;
+  }
+  return static_cast<gint>(acc->EmbeddedChildCount());
+}
+
+AtkObject* refChildCB(AtkObject* aAtkObj, gint aChildIndex) {
+  // aChildIndex should not be less than zero
+  if (aChildIndex < 0) {
+    return nullptr;
+  }
+
+  Accessible* acc = GetInternalObj(aAtkObj);
+  if (!acc || nsAccUtils::MustPrune(acc)) {
+    return nullptr;
+  }
+  Accessible* accChild = acc->EmbeddedChildAt(aChildIndex);
+  if (!accChild) {
+    return nullptr;
+  }
+
+  AtkObject* childAtkObj = GetWrapperFor(accChild);
+  NS_ASSERTION(childAtkObj, "Fail to get AtkObj");
+  if (!childAtkObj) {
+    return nullptr;
+  }
+
+  g_object_ref(childAtkObj);
+
+  if (aAtkObj != childAtkObj->accessible_parent) {
+    atk_object_set_parent(childAtkObj, aAtkObj);
+  }
+
+  return childAtkObj;
+}
+
+gint getIndexInParentCB(AtkObject* aAtkObj) {
+  // We don't use LocalAccessible::IndexInParent() because we don't include text
+  // leaf nodes as children in ATK.
+  Accessible* acc = GetInternalObj(aAtkObj);
+  if (!acc) {
+    return -1;
+  }
+  if (acc->IsDoc()) {
+    return 0;
+  }
+  Accessible* parent = acc->Parent();
+  if (!parent) {
+    return -1;
+  }
+  return parent->IndexOfEmbeddedChild(acc);
+}
+
+static void TranslateStates(uint64_t aState, roles::Role aRole,
+                            AtkStateSet* aStateSet) {
+  // atk doesn't have a read only state so read only things shouldn't be
+  // editable. However, we don't do this for list items because Gecko always
+  // exposes those as read only.
+  if ((aState & states::READONLY) && aRole != roles::LISTITEM) {
+    aState &= ~states::EDITABLE;
+  }
+
+  // Convert every state to an entry in AtkStateMap
+  uint64_t bitMask = 1;
+  for (auto stateIndex = 0U; stateIndex < gAtkStateMapLen; stateIndex++) {
+    if (gAtkStateMap[stateIndex]
+            .atkState) {  // There's potentially an ATK state for this
+      bool isStateOn = (aState & bitMask) != 0;
+      if (gAtkStateMap[stateIndex].stateMapEntryType == kMapOpposite) {
+        isStateOn = !isStateOn;
+      }
+      if (isStateOn) {
+        atk_state_set_add_state(aStateSet, gAtkStateMap[stateIndex].atkState);
+      }
+    }
+    bitMask <<= 1;
+  }
+}
+
+AtkStateSet* refStateSetCB(AtkObject* aAtkObj) {
+  AtkStateSet* state_set = nullptr;
+  state_set = ATK_OBJECT_CLASS(parent_class)->ref_state_set(aAtkObj);
+
+  if (Accessible* acc = GetInternalObj(aAtkObj)) {
+    TranslateStates(acc->State(), acc->Role(), state_set);
+  } else {
+    TranslateStates(states::DEFUNCT, roles::NOTHING, state_set);
+  }
+
+  return state_set;
+}
+
+static void UpdateAtkRelation(RelationType aType, Accessible* aAcc,
+                              AtkRelationType aAtkType,
+                              AtkRelationSet* aAtkSet) {
+  if (aAtkType == ATK_RELATION_NULL) return;
+
+  AtkRelation* atkRelation =
+      atk_relation_set_get_relation_by_type(aAtkSet, aAtkType);
+  if (atkRelation) atk_relation_set_remove(aAtkSet, atkRelation);
+
+  Relation rel(aAcc->RelationByType(aType));
+  nsTArray<AtkObject*> targets;
+  Accessible* tempAcc = nullptr;
+  while ((tempAcc = rel.Next())) {
+    targets.AppendElement(GetWrapperFor(tempAcc));
+  }
+
+  if (targets.Length()) {
+    atkRelation =
+        atk_relation_new(targets.Elements(), targets.Length(), aAtkType);
+    atk_relation_set_add(aAtkSet, atkRelation);
+    g_object_unref(atkRelation);
+  }
+}
+
+AtkRelationSet* refRelationSetCB(AtkObject* aAtkObj) {
+  AtkRelationSet* relation_set =
+      ATK_OBJECT_CLASS(parent_class)->ref_relation_set(aAtkObj);
+
+  Accessible* acc = GetInternalObj(aAtkObj);
+  if (!acc) {
+    return relation_set;
+  }
+
+#define RELATIONTYPE(geckoType, geckoTypeName, atkType, msaaType, ia2Type) \
+  UpdateAtkRelation(RelationType::geckoType, acc, atkType, relation_set);
+
+#include "RelationTypeMap.h"
+
+#undef RELATIONTYPE
+
+  return relation_set;
+}
+
+// Check if aAtkObj is a valid MaiAtkObject, and return the AccessibleWrap
+// for it.
+AccessibleWrap* GetAccessibleWrap(AtkObject* aAtkObj) {
+  NS_ENSURE_TRUE(IS_MAI_OBJECT(aAtkObj), nullptr);
+
+  // If we're working with an ATK object, we need to convert the Accessible
+  // back to an AccessibleWrap:
+  Accessible* storedAcc = MAI_ATK_OBJECT(aAtkObj)->acc;
+  if (!storedAcc) {
+    return nullptr;
+  }
+  auto* accWrap = static_cast<AccessibleWrap*>(storedAcc->AsLocal());
+
+  // Check if the accessible was deconstructed.
+  if (!accWrap) return nullptr;
+
+  NS_ENSURE_TRUE(accWrap->GetAtkObject() == aAtkObj, nullptr);
+
+  AccessibleWrap* appAccWrap = ApplicationAcc();
+  if (appAccWrap != accWrap && !accWrap->IsValidObject()) {
+    return nullptr;
+  }
+
+  return accWrap;
+}
+
+RemoteAccessible* GetProxy(AtkObject* aObj) {
+  Accessible* acc = GetInternalObj(aObj);
+  if (!acc) {
+    return nullptr;
+  }
+
+  return acc->AsRemote();
+}
+
+Accessible* GetInternalObj(AtkObject* aObj) {
+  if (!aObj || !IS_MAI_OBJECT(aObj)) return nullptr;
+
+  return MAI_ATK_OBJECT(aObj)->acc;
+}
+
+AtkObject* GetWrapperFor(Accessible* aAcc) {
+  if (!aAcc) {
+    return nullptr;
+  }
+
+  if (aAcc->IsRemote()) {
+    return reinterpret_cast<AtkObject*>(aAcc->AsRemote()->GetWrapper());
+  }
+
+  return AccessibleWrap::GetAtkObject(aAcc->AsLocal());
+}
+
+static uint16_t GetInterfacesForProxy(RemoteAccessible* aProxy) {
+  uint16_t interfaces = 1 << MAI_INTERFACE_COMPONENT;
+  if (aProxy->IsHyperText()) {
+    interfaces |= (1 << MAI_INTERFACE_HYPERTEXT) | (1 << MAI_INTERFACE_TEXT) |
+                  (1 << MAI_INTERFACE_EDITABLE_TEXT);
+  }
+
+  if (aProxy->IsLink()) {
+    interfaces |= 1 << MAI_INTERFACE_HYPERLINK_IMPL;
+  }
+
+  if (aProxy->HasNumericValue()) {
+    interfaces |= 1 << MAI_INTERFACE_VALUE;
+  }
+
+  if (aProxy->IsTable()) {
+    interfaces |= 1 << MAI_INTERFACE_TABLE;
+  }
+
+  if (aProxy->IsTableCell()) {
+    interfaces |= 1 << MAI_INTERFACE_TABLE_CELL;
+  }
+
+  if (aProxy->IsImage()) {
+    interfaces |= 1 << MAI_INTERFACE_IMAGE;
+  }
+
+  if (aProxy->IsDoc()) {
+    interfaces |= 1 << MAI_INTERFACE_DOCUMENT;
+  }
+
+  if (aProxy->IsSelect()) {
+    interfaces |= 1 << MAI_INTERFACE_SELECTION;
+  }
+
+  if (aProxy->IsActionable()) {
+    interfaces |= 1 << MAI_INTERFACE_ACTION;
+  }
+
+  return interfaces;
+}
+
+void a11y::ProxyCreated(RemoteAccessible* aProxy) {
+  MOZ_ASSERT(aProxy->RemoteParent() || aProxy->IsDoc(),
+             "Need parent to check for HyperLink interface");
+  GType type = GetMaiAtkType(GetInterfacesForProxy(aProxy));
+  NS_ASSERTION(type, "why don't we have a type!");
+
+  AtkObject* obj = reinterpret_cast<AtkObject*>(g_object_new(type, nullptr));
+  if (!obj) return;
+
+  atk_object_initialize(obj, static_cast<Accessible*>(aProxy));
+  obj->role = ATK_ROLE_INVALID;
+  obj->layer = ATK_LAYER_INVALID;
+  aProxy->SetWrapper(reinterpret_cast<uintptr_t>(obj));
+}
+
+void a11y::ProxyDestroyed(RemoteAccessible* aProxy) {
+  auto obj = reinterpret_cast<MaiAtkObject*>(aProxy->GetWrapper());
+  if (!obj) {
+    return;
+  }
+
+  obj->Shutdown();
+  g_object_unref(obj);
+  aProxy->SetWrapper(0);
+}
+
+void a11y::PlatformEvent(Accessible* aTarget, uint32_t aEventType) {
+  AtkObject* wrapper = GetWrapperFor(aTarget);
+
+  switch (aEventType) {
+    case nsIAccessibleEvent::EVENT_DOCUMENT_LOAD_COMPLETE:
+      if (aTarget->IsDoc()) {
+        g_signal_emit_by_name(wrapper, "load_complete");
+      }
+      // XXX - Handle native dialog accessibles.
+      if (!aTarget->IsRoot() && aTarget->HasARIARole() &&
+          aTarget->Role() == roles::DIALOG) {
+        guint id = g_signal_lookup("activate", MAI_TYPE_ATK_OBJECT);
+        g_signal_emit(wrapper, id, 0);
+      }
+      break;
+    case nsIAccessibleEvent::EVENT_DOCUMENT_RELOAD:
+      if (aTarget->IsDoc()) {
+        g_signal_emit_by_name(wrapper, "reload");
+      }
+      break;
+    case nsIAccessibleEvent::EVENT_DOCUMENT_LOAD_STOPPED:
+      if (aTarget->IsDoc()) {
+        g_signal_emit_by_name(wrapper, "load_stopped");
+      }
+      break;
+    case nsIAccessibleEvent::EVENT_MENUPOPUP_START:
+      atk_focus_tracker_notify(wrapper);  // fire extra focus event
+      atk_object_notify_state_change(wrapper, ATK_STATE_VISIBLE, true);
+      atk_object_notify_state_change(wrapper, ATK_STATE_SHOWING, true);
+      break;
+    case nsIAccessibleEvent::EVENT_MENUPOPUP_END:
+      atk_object_notify_state_change(wrapper, ATK_STATE_VISIBLE, false);
+      atk_object_notify_state_change(wrapper, ATK_STATE_SHOWING, false);
+      break;
+    case nsIAccessibleEvent::EVENT_ALERT:
+      // A hack using state change showing events as alert events.
+      atk_object_notify_state_change(wrapper, ATK_STATE_SHOWING, true);
+      break;
+    case nsIAccessibleEvent::EVENT_VALUE_CHANGE:
+    case nsIAccessibleEvent::EVENT_TEXT_VALUE_CHANGE:
+      if (aTarget->HasNumericValue()) {
+        // Make sure this is a numeric value. Don't fire for string value
+        // changes (e.g. text editing) ATK values are always numeric.
+        g_object_notify((GObject*)wrapper, "accessible-value");
+      }
+      break;
+    case nsIAccessibleEvent::EVENT_TEXT_SELECTION_CHANGED:
+      g_signal_emit_by_name(wrapper, "text_selection_changed");
+      break;
+    case nsIAccessibleEvent::EVENT_SELECTION_WITHIN:
+      g_signal_emit_by_name(wrapper, "selection_changed");
+      break;
+    case nsIAccessibleEvent::EVENT_TEXT_ATTRIBUTE_CHANGED:
+      g_signal_emit_by_name(wrapper, "text-attributes-changed");
+      break;
+    case nsIAccessibleEvent::EVENT_NAME_CHANGE: {
+      nsAutoString newName;
+      aTarget->Name(newName);
+      MaybeFireNameChange(wrapper, newName);
+      break;
+    }
+    case nsIAccessibleEvent::EVENT_WINDOW_ACTIVATE: {
+      guint id = g_signal_lookup("activate", MAI_TYPE_ATK_OBJECT);
+      g_signal_emit(wrapper, id, 0);
+      // Always fire a current focus event after activation.
+      FocusMgr()->ForceFocusEvent();
+      break;
+    }
+    case nsIAccessibleEvent::EVENT_WINDOW_DEACTIVATE: {
+      guint id = g_signal_lookup("deactivate", MAI_TYPE_ATK_OBJECT);
+      g_signal_emit(wrapper, id, 0);
+      break;
+    }
+    case nsIAccessibleEvent::EVENT_WINDOW_MAXIMIZE: {
+      guint id = g_signal_lookup("maximize", MAI_TYPE_ATK_OBJECT);
+      g_signal_emit(wrapper, id, 0);
+      break;
+    }
+    case nsIAccessibleEvent::EVENT_WINDOW_MINIMIZE: {
+      guint id = g_signal_lookup("minimize", MAI_TYPE_ATK_OBJECT);
+      g_signal_emit(wrapper, id, 0);
+      break;
+    }
+    case nsIAccessibleEvent::EVENT_WINDOW_RESTORE: {
+      guint id = g_signal_lookup("restore", MAI_TYPE_ATK_OBJECT);
+      g_signal_emit(wrapper, id, 0);
+      break;
+    }
+  }
+}
+
+void a11y::PlatformStateChangeEvent(Accessible* aTarget, uint64_t aState,
+                                    bool aEnabled) {
+  MaiAtkObject* atkObj = MAI_ATK_OBJECT(GetWrapperFor(aTarget));
+  atkObj->FireStateChangeEvent(aState, aEnabled);
+}
+
+void a11y::PlatformFocusEvent(Accessible* aTarget,
+                              const LayoutDeviceIntRect& aCaretRect) {
+  AtkObject* wrapper = GetWrapperFor(aTarget);
+
+  // XXX Do we really need this check? If so, do we need a similar check for
+  // RemoteAccessible?
+  if (LocalAccessible* localTarget = aTarget->AsLocal()) {
+    a11y::RootAccessible* rootAcc = localTarget->RootAccessible();
+    if (!rootAcc || !rootAcc->IsActivated()) {
+      return;
+    }
+  }
+
+  atk_focus_tracker_notify(wrapper);
+  atk_object_notify_state_change(wrapper, ATK_STATE_FOCUSED, true);
+}
+
+void a11y::PlatformCaretMoveEvent(Accessible* aTarget, int32_t aOffset,
+                                  bool aIsSelectionCollapsed,
+                                  int32_t aGranularity,
+                                  const LayoutDeviceIntRect& aCaretRect,
+                                  bool aFromUser) {
+  AtkObject* wrapper = GetWrapperFor(aTarget);
+  g_signal_emit_by_name(wrapper, "text_caret_moved", aOffset);
+}
+
+void MaiAtkObject::FireStateChangeEvent(uint64_t aState, bool aEnabled) {
+  auto state = aState;
+  int32_t stateIndex = -1;
+  while (state > 0) {
+    ++stateIndex;
+    state >>= 1;
+  }
+
+  MOZ_ASSERT(
+      stateIndex >= 0 && stateIndex < static_cast<int32_t>(gAtkStateMapLen),
+      "No ATK state for internal state was found");
+  if (stateIndex < 0 || stateIndex >= static_cast<int32_t>(gAtkStateMapLen)) {
+    return;
+  }
+
+  if (gAtkStateMap[stateIndex].atkState != kNone) {
+    MOZ_ASSERT(gAtkStateMap[stateIndex].stateMapEntryType != kNoStateChange,
+               "State changes should not fired for this state");
+
+    if (gAtkStateMap[stateIndex].stateMapEntryType == kMapOpposite) {
+      aEnabled = !aEnabled;
+    }
+
+    // Fire state change for first state if there is one to map
+    atk_object_notify_state_change(&parent, gAtkStateMap[stateIndex].atkState,
+                                   aEnabled);
+  }
+}
+
+void a11y::PlatformTextChangeEvent(Accessible* aTarget, const nsAString& aStr,
+                                   int32_t aStart, uint32_t aLen,
+                                   bool aIsInsert, bool aFromUser) {
+  MaiAtkObject* atkObj = MAI_ATK_OBJECT(GetWrapperFor(aTarget));
+  atkObj->FireTextChangeEvent(aStr, aStart, aLen, aIsInsert, aFromUser);
+}
+
+#define OLD_TEXT_INSERTED "text_changed::insert"
+#define OLD_TEXT_REMOVED "text_changed::delete"
+static const char* oldTextChangeStrings[2][2] = {
+    {OLD_TEXT_REMOVED NON_USER_EVENT, OLD_TEXT_INSERTED NON_USER_EVENT},
+    {OLD_TEXT_REMOVED, OLD_TEXT_INSERTED}};
+
+#define TEXT_INSERTED "text-insert"
+#define TEXT_REMOVED "text-remove"
+#define NON_USER_DETAIL "::system"
+static const char* textChangedStrings[2][2] = {
+    {TEXT_REMOVED NON_USER_DETAIL, TEXT_INSERTED NON_USER_DETAIL},
+    {TEXT_REMOVED, TEXT_INSERTED}};
+
+void MaiAtkObject::FireTextChangeEvent(const nsAString& aStr, int32_t aStart,
+                                       uint32_t aLen, bool aIsInsert,
+                                       bool aFromUser) {
+  if (gAvailableAtkSignals == eUnknown) {
+    gAvailableAtkSignals = g_signal_lookup("text-insert", G_OBJECT_TYPE(this))
+                               ? eHaveNewAtkTextSignals
+                               : eNoNewAtkSignals;
+  }
+
+  if (gAvailableAtkSignals == eNoNewAtkSignals) {
+    // XXX remove this code and the gHaveNewTextSignals check when we can
+    // stop supporting old atk since it doesn't really work anyway
+    // see bug 619002
+    const char* signal_name = oldTextChangeStrings[aFromUser][aIsInsert];
+    g_signal_emit_by_name(this, signal_name, aStart, aLen);
+  } else {
+    const char* signal_name = textChangedStrings[aFromUser][aIsInsert];
+    g_signal_emit_by_name(this, signal_name, aStart, aLen,
+                          NS_ConvertUTF16toUTF8(aStr).get());
+  }
+}
+
+void a11y::PlatformShowHideEvent(Accessible* aTarget, Accessible* aParent,
+                                 bool aInsert, bool aFromUser) {
+  AtkObject* atkObj = GetWrapperFor(aTarget);
+  if (!aInsert) {
+    // XXX - Handle native dialog accessibles.
+    if (!aTarget->IsRoot() && aTarget->HasARIARole() &&
+        aTarget->Role() == roles::DIALOG) {
+      guint id = g_signal_lookup("deactivate", MAI_TYPE_ATK_OBJECT);
+      g_signal_emit(atkObj, id, 0);
+    }
+  }
+
+  MaiAtkObject* obj = MAI_ATK_OBJECT(atkObj);
+  obj->FireAtkShowHideEvent(GetWrapperFor(aParent), aInsert, aFromUser);
+}
+
+#define ADD_EVENT "children_changed::add"
+#define HIDE_EVENT "children_changed::remove"
+
+static const char* kMutationStrings[2][2] = {
+    {HIDE_EVENT NON_USER_EVENT, ADD_EVENT NON_USER_EVENT},
+    {HIDE_EVENT, ADD_EVENT},
+};
+
+void MaiAtkObject::FireAtkShowHideEvent(AtkObject* aParent, bool aIsAdded,
+                                        bool aFromUser) {
+  if (!aParent) {
+    // XXX ATK needs a parent for these events. However, we might have already
+    // unbound from the parent by the time we fire a hide event. Ideally, we
+    // need to find a way to keep the parent around, but ATK clients don't seem
+    // to care about these missing events.
+    MOZ_ASSERT(!aIsAdded);
+    return;
+  }
+  int32_t indexInParent = getIndexInParentCB(&this->parent);
+  const char* signal_name = kMutationStrings[aFromUser][aIsAdded];
+  g_signal_emit_by_name(aParent, signal_name, indexInParent, this, nullptr);
+}
+
+void a11y::PlatformSelectionEvent(Accessible*, Accessible* aWidget, uint32_t) {
+  MaiAtkObject* obj = MAI_ATK_OBJECT(GetWrapperFor(aWidget));
+  g_signal_emit_by_name(obj, "selection_changed");
+}
+
+// static
+void AccessibleWrap::GetKeyBinding(Accessible* aAccessible,
+                                   nsAString& aResult) {
+  // Return all key bindings including access key and keyboard shortcut.
+
+  // Get access key.
+  nsAutoString keyBindingsStr;
+  KeyBinding keyBinding = aAccessible->AccessKey();
+  if (!keyBinding.IsEmpty()) {
+    keyBinding.AppendToString(keyBindingsStr, KeyBinding::eAtkFormat);
+
+    Accessible* parent = aAccessible->Parent();
+    roles::Role role = parent ? parent->Role() : roles::NOTHING;
+    if (role == roles::PARENT_MENUITEM || role == roles::MENUITEM ||
+        role == roles::RADIO_MENU_ITEM || role == roles::CHECK_MENU_ITEM) {
+      // It is submenu, expose keyboard shortcuts from menu hierarchy like
+      // "s;<Alt>f:s"
+      nsAutoString keysInHierarchyStr = keyBindingsStr;
+      do {
+        KeyBinding parentKeyBinding = parent->AccessKey();
+        if (!parentKeyBinding.IsEmpty()) {
+          nsAutoString str;
+          parentKeyBinding.ToString(str, KeyBinding::eAtkFormat);
+          str.Append(':');
+
+          keysInHierarchyStr.Insert(str, 0);
+        }
+      } while ((parent = parent->Parent()) && parent->Role() != roles::MENUBAR);
+
+      keyBindingsStr.Append(';');
+      keyBindingsStr.Append(keysInHierarchyStr);
+    }
+  } else {
+    // No access key, add ';' to point this.
+    keyBindingsStr.Append(';');
+  }
+
+  // Get keyboard shortcut.
+  keyBindingsStr.Append(';');
+  if (LocalAccessible* localAcc = aAccessible->AsLocal()) {
+    keyBinding = localAcc->KeyboardShortcut();
+    if (!keyBinding.IsEmpty()) {
+      keyBinding.AppendToString(keyBindingsStr, KeyBinding::eAtkFormat);
+    }
+  }
+  aResult = keyBindingsStr;
+}
+
+// static
+Accessible* AccessibleWrap::GetColumnHeader(TableAccessible* aAccessible,
+                                            int32_t aColIdx) {
+  if (!aAccessible) {
+    return nullptr;
+  }
+
+  Accessible* cell = aAccessible->CellAt(0, aColIdx);
+  if (!cell) {
+    return nullptr;
+  }
+
+  // If the cell at the first row is column header then assume it is column
+  // header for all rows,
+  if (cell->Role() == roles::COLUMNHEADER) {
+    return cell;
+  }
+
+  // otherwise get column header for the data cell at the first row.
+  TableCellAccessible* tableCell = cell->AsTableCell();
+  if (!tableCell) {
+    return nullptr;
+  }
+
+  AutoTArray<Accessible*, 10> headerCells;
+  tableCell->ColHeaderCells(&headerCells);
+  if (headerCells.IsEmpty()) {
+    return nullptr;
+  }
+
+  return headerCells[0];
+}
+
+// static
+Accessible* AccessibleWrap::GetRowHeader(TableAccessible* aAccessible,
+                                         int32_t aRowIdx) {
+  if (!aAccessible) {
+    return nullptr;
+  }
+
+  Accessible* cell = aAccessible->CellAt(aRowIdx, 0);
+  if (!cell) {
+    return nullptr;
+  }
+
+  // If the cell at the first column is row header then assume it is row
+  // header for all columns,
+  if (cell->Role() == roles::ROWHEADER) {
+    return cell;
+  }
+
+  // otherwise get row header for the data cell at the first column.
+  TableCellAccessible* tableCell = cell->AsTableCell();
+  if (!tableCell) {
+    return nullptr;
+  }
+
+  AutoTArray<Accessible*, 10> headerCells;
+  tableCell->RowHeaderCells(&headerCells);
+  if (headerCells.IsEmpty()) {
+    return nullptr;
+  }
+
+  return headerCells[0];
+}