diff -r 000000000000 -r 6474c204b198 accessible/src/base/TextRange.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/accessible/src/base/TextRange.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,81 @@
+/* -*- 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_TextRange_h__
+#define mozilla_a11y_TextRange_h__
+
+#include "mozilla/Move.h"
+#include "nsAutoPtr.h"
+
+namespace mozilla {
+namespace a11y {
+
+class Accessible;
+class HyperTextAccessible;
+
+/**
+ * Represents a text range within the text control or document.
+ */
+class TextRange MOZ_FINAL
+{
+public:
+  TextRange(HyperTextAccessible* aRoot,
+            Accessible* aStartContainer, int32_t aStartOffset,
+            Accessible* aEndContainer, int32_t aEndOffset);
+  TextRange() {}
+  TextRange(TextRange&& aRange) :
+    mRoot(Move(aRange.mRoot)), mStartContainer(Move(aRange.mStartContainer)),
+    mEndContainer(Move(aRange.mEndContainer)),
+    mStartOffset(aRange.mStartOffset), mEndOffset(aRange.mEndOffset) {}
+
+  TextRange& operator= (TextRange&& aRange)
+  {
+    mRoot = Move(aRange.mRoot);
+    mStartContainer = Move(aRange.mStartContainer);
+    mEndContainer = Move(aRange.mEndContainer);
+    mStartOffset = aRange.mStartOffset;
+    mEndOffset = aRange.mEndOffset;
+    return *this;
+  }
+
+  Accessible* StartContainer() const { return mStartContainer; }
+  int32_t StartOffset() const { return mStartOffset; }
+  Accessible* EndContainer() const { return mEndContainer; }
+  int32_t EndOffset() const { return mEndOffset; }
+
+  /**
+   * Return text enclosed by the range.
+   */
+  void Text(nsAString& aText) const;
+
+  /**
+   * Return true if this TextRange object represents an actual range of text.
+   */
+  bool IsValid() const { return mRoot; }
+
+private:
+  TextRange(const TextRange& aRange) MOZ_DELETE;
+  TextRange& operator=(const TextRange& aRange) MOZ_DELETE;
+
+  friend class HyperTextAccessible;
+  friend class xpcAccessibleTextRange;
+
+  void Set(HyperTextAccessible* aRoot,
+           Accessible* aStartContainer, int32_t aStartOffset,
+           Accessible* aEndContainer, int32_t aEndOffset);
+
+  nsRefPtr<HyperTextAccessible> mRoot;
+  nsRefPtr<Accessible> mStartContainer;
+  nsRefPtr<Accessible> mEndContainer;
+  int32_t mStartOffset;
+  int32_t mEndOffset;
+};
+
+
+} // namespace a11y
+} // namespace mozilla
+
+#endif