michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* vim: set ts=2 et sw=2 tw=80: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef mozilla_a11y_TextRange_h__
michael@0: #define mozilla_a11y_TextRange_h__
michael@0: 
michael@0: #include "mozilla/Move.h"
michael@0: #include "nsAutoPtr.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace a11y {
michael@0: 
michael@0: class Accessible;
michael@0: class HyperTextAccessible;
michael@0: 
michael@0: /**
michael@0:  * Represents a text range within the text control or document.
michael@0:  */
michael@0: class TextRange MOZ_FINAL
michael@0: {
michael@0: public:
michael@0:   TextRange(HyperTextAccessible* aRoot,
michael@0:             Accessible* aStartContainer, int32_t aStartOffset,
michael@0:             Accessible* aEndContainer, int32_t aEndOffset);
michael@0:   TextRange() {}
michael@0:   TextRange(TextRange&& aRange) :
michael@0:     mRoot(Move(aRange.mRoot)), mStartContainer(Move(aRange.mStartContainer)),
michael@0:     mEndContainer(Move(aRange.mEndContainer)),
michael@0:     mStartOffset(aRange.mStartOffset), mEndOffset(aRange.mEndOffset) {}
michael@0: 
michael@0:   TextRange& operator= (TextRange&& aRange)
michael@0:   {
michael@0:     mRoot = Move(aRange.mRoot);
michael@0:     mStartContainer = Move(aRange.mStartContainer);
michael@0:     mEndContainer = Move(aRange.mEndContainer);
michael@0:     mStartOffset = aRange.mStartOffset;
michael@0:     mEndOffset = aRange.mEndOffset;
michael@0:     return *this;
michael@0:   }
michael@0: 
michael@0:   Accessible* StartContainer() const { return mStartContainer; }
michael@0:   int32_t StartOffset() const { return mStartOffset; }
michael@0:   Accessible* EndContainer() const { return mEndContainer; }
michael@0:   int32_t EndOffset() const { return mEndOffset; }
michael@0: 
michael@0:   /**
michael@0:    * Return text enclosed by the range.
michael@0:    */
michael@0:   void Text(nsAString& aText) const;
michael@0: 
michael@0:   /**
michael@0:    * Return true if this TextRange object represents an actual range of text.
michael@0:    */
michael@0:   bool IsValid() const { return mRoot; }
michael@0: 
michael@0: private:
michael@0:   TextRange(const TextRange& aRange) MOZ_DELETE;
michael@0:   TextRange& operator=(const TextRange& aRange) MOZ_DELETE;
michael@0: 
michael@0:   friend class HyperTextAccessible;
michael@0:   friend class xpcAccessibleTextRange;
michael@0: 
michael@0:   void Set(HyperTextAccessible* aRoot,
michael@0:            Accessible* aStartContainer, int32_t aStartOffset,
michael@0:            Accessible* aEndContainer, int32_t aEndOffset);
michael@0: 
michael@0:   nsRefPtr<HyperTextAccessible> mRoot;
michael@0:   nsRefPtr<Accessible> mStartContainer;
michael@0:   nsRefPtr<Accessible> mEndContainer;
michael@0:   int32_t mStartOffset;
michael@0:   int32_t mEndOffset;
michael@0: };
michael@0: 
michael@0: 
michael@0: } // namespace a11y
michael@0: } // namespace mozilla
michael@0: 
michael@0: #endif