1/*
2 * Copyright (C) 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 CSSSegmentedFontFace_h
27#define CSSSegmentedFontFace_h
28
29#include "platform/fonts/FontTraits.h"
30#include "platform/heap/Handle.h"
31#include "wtf/HashMap.h"
32#include "wtf/ListHashSet.h"
33#include "wtf/PassRefPtr.h"
34#include "wtf/RefCounted.h"
35#include "wtf/Vector.h"
36#include "wtf/text/WTFString.h"
37
38namespace blink {
39
40class CSSFontFace;
41class CSSFontSelector;
42class FontData;
43class FontDescription;
44class FontFace;
45class SegmentedFontData;
46
47class CSSSegmentedFontFace FINAL : public RefCountedWillBeGarbageCollectedFinalized<CSSSegmentedFontFace> {
48public:
49    static PassRefPtrWillBeRawPtr<CSSSegmentedFontFace> create(CSSFontSelector* selector, FontTraits traits)
50    {
51        return adoptRefWillBeNoop(new CSSSegmentedFontFace(selector, traits));
52    }
53    ~CSSSegmentedFontFace();
54
55    CSSFontSelector* fontSelector() const { return m_fontSelector; }
56    FontTraits traits() const { return m_traits; }
57
58    void fontLoaded(CSSFontFace*);
59    void fontLoadWaitLimitExceeded(CSSFontFace*);
60
61    void addFontFace(PassRefPtrWillBeRawPtr<FontFace>, bool cssConnected);
62    void removeFontFace(PassRefPtrWillBeRawPtr<FontFace>);
63    bool isEmpty() const { return m_fontFaces.isEmpty(); }
64
65    PassRefPtr<FontData> getFontData(const FontDescription&);
66
67    bool checkFont(const String&) const;
68    void match(const String&, WillBeHeapVector<RefPtrWillBeMember<FontFace> >&) const;
69    void willUseFontData(const FontDescription&, UChar32);
70
71    void trace(Visitor*);
72
73private:
74    CSSSegmentedFontFace(CSSFontSelector*, FontTraits);
75
76    void pruneTable();
77    bool isValid() const;
78    bool isLoading() const;
79    bool isLoaded() const;
80
81    typedef WillBeHeapListHashSet<RefPtrWillBeMember<FontFace> > FontFaceList;
82
83    RawPtrWillBeMember<CSSFontSelector> m_fontSelector;
84    FontTraits m_traits;
85    HashMap<unsigned, RefPtr<SegmentedFontData> > m_fontDataTable;
86    // All non-CSS-connected FontFaces are stored after the CSS-connected ones.
87    FontFaceList m_fontFaces;
88    FontFaceList::iterator m_firstNonCssConnectedFace;
89};
90
91} // namespace blink
92
93#endif // CSSSegmentedFontFace_h
94