third_party/WebKit/Source/core/editing/SurroundingText.h

/*
 * Copyright (C) 2012 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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 */

#ifndef SurroundingText_h
#define SurroundingText_h

#include "core/CoreExport.h"
#include "core/editing/Position.h"
#include "platform/heap/Handle.h"
#include "wtf/text/WTFString.h"

namespace blink {

class Range;

class CORE_EXPORT SurroundingText {
  USING_FAST_MALLOC(SurroundingText);
  WTF_MAKE_NONCOPYABLE(SurroundingText);

 public:
  SurroundingText(const Range&, unsigned maxLength);
  SurroundingText(const Position&, unsigned maxLength);

  String content() const;
  unsigned startOffsetInContent() const;
  unsigned endOffsetInContent() const;

 private:
  void initialize(const Position&, const Position&, unsigned maxLength);

  Persistent<Range> m_contentRange;
  size_t m_startOffsetInContent;
  size_t m_endOffsetInContent;
};

}  // namespace blink

#endif  // SurroundingText_h