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 <wtf/HashMap.h>
30#include <wtf/PassRefPtr.h>
31#include <wtf/RefCounted.h>
32#include <wtf/Vector.h>
33#include <wtf/unicode/Unicode.h>
34
35namespace WebCore {
36
37class CSSFontFace;
38class CSSFontSelector;
39class FontData;
40class FontDescription;
41class SegmentedFontData;
42
43class CSSSegmentedFontFace : public RefCounted<CSSSegmentedFontFace> {
44public:
45    static PassRefPtr<CSSSegmentedFontFace> create(CSSFontSelector* selector) { return adoptRef(new CSSSegmentedFontFace(selector)); }
46    ~CSSSegmentedFontFace();
47
48    CSSFontSelector* fontSelector() const { return m_fontSelector; }
49
50    void fontLoaded(CSSFontFace*);
51
52    void appendFontFace(PassRefPtr<CSSFontFace>);
53
54    PassRefPtr<FontData> getFontData(const FontDescription&);
55
56#if ENABLE(FONT_LOAD_EVENTS)
57    class LoadFontCallback : public RefCounted<LoadFontCallback> {
58    public:
59        virtual ~LoadFontCallback() { }
60        virtual void notifyLoaded() = 0;
61        virtual void notifyError() = 0;
62    };
63
64    bool checkFont() const;
65    void loadFont(const FontDescription&, PassRefPtr<LoadFontCallback> loadCallback);
66#endif
67
68private:
69    CSSSegmentedFontFace(CSSFontSelector*);
70
71    void pruneTable();
72    bool isValid() const;
73#if ENABLE(FONT_LOAD_EVENTS)
74    bool isLoading() const;
75#endif
76
77    CSSFontSelector* m_fontSelector;
78    HashMap<unsigned, RefPtr<SegmentedFontData> > m_fontDataTable;
79    Vector<RefPtr<CSSFontFace>, 1> m_fontFaces;
80#if ENABLE(FONT_LOAD_EVENTS)
81    Vector<RefPtr<LoadFontCallback> > m_callbacks;
82#endif
83};
84
85} // namespace WebCore
86
87#endif // CSSSegmentedFontFace_h
88