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/*
* Copyright (C) 2003, 2006, 2008 Apple 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:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef FontFamily_h
#define FontFamily_h
#include "platform/PlatformExport.h"
#include "wtf/RefCounted.h"
#include "wtf/RefPtr.h"
#include "wtf/text/AtomicString.h"
namespace WebCore {
class SharedFontFamily;
class PLATFORM_EXPORT FontFamily {
public:
FontFamily() { }
~FontFamily();
void setFamily(const AtomicString& family) { m_family = family; }
const AtomicString& family() const { return m_family; }
bool familyIsEmpty() const { return m_family.isEmpty(); }
const FontFamily* next() const;
void appendFamily(PassRefPtr<SharedFontFamily>);
PassRefPtr<SharedFontFamily> releaseNext();
private:
AtomicString m_family;
RefPtr<SharedFontFamily> m_next;
};
class PLATFORM_EXPORT SharedFontFamily : public FontFamily, public RefCounted<SharedFontFamily> {
public:
static PassRefPtr<SharedFontFamily> create()
{
return adoptRef(new SharedFontFamily);
}
private:
SharedFontFamily() { }
};
PLATFORM_EXPORT bool operator==(const FontFamily&, const FontFamily&);
inline bool operator!=(const FontFamily& a, const FontFamily& b) { return !(a == b); }
inline FontFamily::~FontFamily()
{
RefPtr<SharedFontFamily> reaper = m_next.release();
while (reaper && reaper->hasOneRef())
reaper = reaper->releaseNext(); // implicitly protects reaper->next, then derefs reaper
}
inline const FontFamily* FontFamily::next() const
{
return m_next.get();
}
inline void FontFamily::appendFamily(PassRefPtr<SharedFontFamily> family)
{
m_next = family;
}
inline PassRefPtr<SharedFontFamily> FontFamily::releaseNext()
{
return m_next.release();
}
}
#endif
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