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diff --git a/accessible/xul/XULTabAccessible.h b/accessible/xul/XULTabAccessible.h
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+++ b/accessible/xul/XULTabAccessible.h
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+/* -*- 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/. */
+
+#ifndef mozilla_a11y_XULTabAccessible_h__
+#define mozilla_a11y_XULTabAccessible_h__
+
+// NOTE: alphabetically ordered
+#include "HyperTextAccessibleWrap.h"
+#include "XULMenuAccessible.h"
+#include "XULSelectControlAccessible.h"
+
+namespace mozilla {
+namespace a11y {
+
+/**
+ * An individual tab, xul:tab element.
+ */
+class XULTabAccessible : public HyperTextAccessibleWrap {
+ public:
+  enum { eAction_Switch = 0 };
+
+  XULTabAccessible(nsIContent* aContent, DocAccessible* aDoc);
+
+  // Accessible
+  virtual a11y::role NativeRole() const override;
+  virtual uint64_t NativeState() const override;
+  virtual uint64_t NativeInteractiveState() const override;
+  virtual Relation RelationByType(RelationType aType) const override;
+  virtual void ApplyARIAState(uint64_t* aState) const override;
+
+  // ActionAccessible
+  virtual uint8_t ActionCount() const override;
+  virtual void ActionNameAt(uint8_t aIndex, nsAString& aName) override;
+  virtual bool DoAction(uint8_t aIndex) const override;
+};
+
+/**
+ * A container of tab objects, xul:tabs element.
+ */
+class XULTabsAccessible : public XULSelectControlAccessible {
+ public:
+  XULTabsAccessible(nsIContent* aContent, DocAccessible* aDoc);
+
+  // Accessible
+  virtual void Value(nsString& aValue) const override;
+  virtual a11y::role NativeRole() const override;
+  virtual void ApplyARIAState(uint64_t* aState) const override;
+
+  // ActionAccessible
+  virtual uint8_t ActionCount() const override;
+
+  // SelectAccessible
+  virtual void SelectedItems(nsTArray<Accessible*>* aItems) override;
+  virtual uint32_t SelectedItemCount() override;
+  virtual Accessible* GetSelectedItem(uint32_t aIndex) override;
+  virtual bool IsItemSelected(uint32_t aIndex) override;
+
+ protected:
+  // Accessible
+  virtual ENameValueFlag NativeName(nsString& aName) const override;
+};
+
+/**
+ * A container of tab panels, xul:tabpanels element.
+ */
+class XULTabpanelsAccessible : public AccessibleWrap {
+ public:
+  XULTabpanelsAccessible(nsIContent* aContent, DocAccessible* aDoc)
+      : AccessibleWrap(aContent, aDoc) {
+    mType = eXULTabpanelsType;
+  }
+
+  // Accessible
+  virtual a11y::role NativeRole() const override;
+};
+
+/**
+ * A tabpanel object, child elements of xul:tabpanels element.
+ *
+ * XXX: we need to move the class logic into generic class since
+ * for example we do not create instance of this class for XUL textbox used as
+ * a tabpanel.
+ */
+class XULTabpanelAccessible : public AccessibleWrap {
+ public:
+  XULTabpanelAccessible(nsIContent* aContent, DocAccessible* aDoc);
+
+  // Accessible
+  virtual a11y::role NativeRole() const override;
+  virtual Relation RelationByType(RelationType aType) const override;
+};
+
+}  // namespace a11y
+}  // namespace mozilla
+
+#endif