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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 "AtomicString.h"
30 #include <wtf/RefCounted.h>
31 #include <wtf/ListRefPtr.h>
32 
33 namespace WebCore {
34 
35 class SharedFontFamily;
36 
37 class FontFamily {
38 public:
FontFamily()39     FontFamily() { }
40     FontFamily(const FontFamily&);
41     FontFamily& operator=(const FontFamily&);
42 
setFamily(const AtomicString & family)43     void setFamily(const AtomicString& family) { m_family = family; }
family()44     const AtomicString& family() const { return m_family; }
familyIsEmpty()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:
create()59     static PassRefPtr<SharedFontFamily> create()
60     {
61         return adoptRef(new SharedFontFamily);
62     }
63 
64 private:
SharedFontFamily()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 
next()71 inline const FontFamily* FontFamily::next() const
72 {
73     return m_next.get();
74 }
75 
appendFamily(PassRefPtr<SharedFontFamily> family)76 inline void FontFamily::appendFamily(PassRefPtr<SharedFontFamily> family)
77 {
78     m_next = family;
79 }
80 
releaseNext()81 inline PassRefPtr<SharedFontFamily> FontFamily::releaseNext()
82 {
83     return m_next.release();
84 }
85 
86 }
87 
88 #endif
89