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 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 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 <wtf/HashMap.h>
30#include <wtf/PassRefPtr.h>
31#include <wtf/RefCounted.h>
32#include <wtf/Vector.h>
33
34namespace WebCore {
35
36class CSSFontFace;
37class CSSFontSelector;
38class FontData;
39class FontDescription;
40class SegmentedFontData;
41
42class CSSSegmentedFontFace : public RefCounted<CSSSegmentedFontFace> {
43public:
44    static PassRefPtr<CSSSegmentedFontFace> create(CSSFontSelector* selector) { return adoptRef(new CSSSegmentedFontFace(selector)); }
45    ~CSSSegmentedFontFace();
46
47    CSSFontSelector* fontSelector() const { return m_fontSelector; }
48
49    void fontLoaded(CSSFontFace*);
50
51    void appendFontFace(PassRefPtr<CSSFontFace>);
52
53    PassRefPtr<FontData> getFontData(const FontDescription&);
54
55#if ENABLE(FONT_LOAD_EVENTS)
56    class LoadFontCallback : public RefCounted<LoadFontCallback> {
57    public:
58        virtual ~LoadFontCallback() { }
59        virtual void notifyLoaded() = 0;
60        virtual void notifyError() = 0;
61    };
62
63    bool checkFont() const;
64    void loadFont(const FontDescription&, PassRefPtr<LoadFontCallback> loadCallback);
65#endif
66
67private:
68    CSSSegmentedFontFace(CSSFontSelector*);
69
70    void pruneTable();
71    bool isValid() const;
72#if ENABLE(FONT_LOAD_EVENTS)
73    bool isLoading() const;
74#endif
75
76    CSSFontSelector* m_fontSelector;
77    HashMap<unsigned, RefPtr<SegmentedFontData>> m_fontDataTable;
78    Vector<RefPtr<CSSFontFace>, 1> m_fontFaces;
79#if ENABLE(FONT_LOAD_EVENTS)
80    Vector<RefPtr<LoadFontCallback>> m_callbacks;
81#endif
82};
83
84} // namespace WebCore
85
86#endif // CSSSegmentedFontFace_h
87