Source/core/platform/text/StringWithDirection.h

/*
 * Copyright (C) 2011 Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
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 * notice, this list of conditions and the following disclaimer.
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 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
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 * 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
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#ifndef StringWithDirection_h
#define StringWithDirection_h

#include "core/platform/text/TextDirection.h"
#include "wtf/text/WTFString.h"

namespace WebCore {

// In some circumstances we want to store a String along with the TextDirection
// of the String as learned from the context of the String. For example,
// consider storing the title derived from <title dir='rtl'>some title</title>
// in the history.
//
// Note that is explicitly *not* the direction of the string as learned
// from the characters of the string; it's extra metadata we have external
// to the string.
class StringWithDirection {
public:
    StringWithDirection()
        : m_direction(LTR)
    {
    }

    StringWithDirection(const String& string, TextDirection dir)
        : m_string(string)
        , m_direction(dir)
    {
    }

    const String& string() const { return m_string; }
    TextDirection direction() const { return m_direction; }

    bool isEmpty() const { return m_string.isEmpty(); }
    bool isNull() const { return m_string.isNull(); }

    bool operator==(const StringWithDirection& other) const
    {
        return other.m_string == m_string && other.m_direction == m_direction;
    }
    bool operator!=(const StringWithDirection& other) const { return !((*this) == other); }

private:
    String m_string;
    TextDirection m_direction;
};

}

#endif // StringWithDirection_h