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      1 /*
      2  * Copyright (C) 2003, 2006, 2008 Apple Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef FontFamily_h
     27 #define FontFamily_h
     28 
     29 #include <wtf/RefCounted.h>
     30 #include <wtf/ListRefPtr.h>
     31 #include <wtf/text/AtomicString.h>
     32 
     33 namespace WebCore {
     34 
     35 class SharedFontFamily;
     36 
     37 class FontFamily {
     38 public:
     39     FontFamily() { }
     40     FontFamily(const FontFamily&);
     41     FontFamily& operator=(const FontFamily&);
     42 
     43     void setFamily(const AtomicString& family) { m_family = family; }
     44     const AtomicString& family() const { return m_family; }
     45     bool familyIsEmpty() const { return m_family.isEmpty(); }
     46 
     47     const FontFamily* next() const;
     48 
     49     void appendFamily(PassRefPtr<SharedFontFamily>);
     50     PassRefPtr<SharedFontFamily> releaseNext();
     51 
     52 private:
     53     AtomicString m_family;
     54     ListRefPtr<SharedFontFamily> m_next;
     55 };
     56 
     57 class SharedFontFamily : public FontFamily, public RefCounted<SharedFontFamily> {
     58 public:
     59     static PassRefPtr<SharedFontFamily> create()
     60     {
     61         return adoptRef(new SharedFontFamily);
     62     }
     63 
     64 private:
     65     SharedFontFamily() { }
     66 };
     67 
     68 bool operator==(const FontFamily&, const FontFamily&);
     69 inline bool operator!=(const FontFamily& a, const FontFamily& b) { return !(a == b); }
     70 
     71 inline const FontFamily* FontFamily::next() const
     72 {
     73     return m_next.get();
     74 }
     75 
     76 inline void FontFamily::appendFamily(PassRefPtr<SharedFontFamily> family)
     77 {
     78     m_next = family;
     79 }
     80 
     81 inline PassRefPtr<SharedFontFamily> FontFamily::releaseNext()
     82 {
     83     return m_next.release();
     84 }
     85 
     86 }
     87 
     88 #endif
     89