1 /*
2  * Copyright (C) 2007, 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 CSSFontSelector_h
27 #define CSSFontSelector_h
28 
29 #include "FontSelector.h"
30 #include <wtf/Forward.h>
31 #include <wtf/HashMap.h>
32 #include <wtf/HashSet.h>
33 #include <wtf/RefPtr.h>
34 #include <wtf/text/StringHash.h>
35 
36 namespace WebCore {
37 
38 class CSSFontFace;
39 class CSSFontFaceRule;
40 class CSSSegmentedFontFace;
41 class Document;
42 class CachedResourceLoader;
43 class FontDescription;
44 
45 class CSSFontSelector : public FontSelector {
46 public:
create(Document * document)47     static PassRefPtr<CSSFontSelector> create(Document* document)
48     {
49         return adoptRef(new CSSFontSelector(document));
50     }
51     virtual ~CSSFontSelector();
52 
53     virtual FontData* getFontData(const FontDescription& fontDescription, const AtomicString& familyName);
54 
clearDocument()55     void clearDocument() { m_document = 0; }
56 
57     void addFontFaceRule(const CSSFontFaceRule*);
58 
59     void fontLoaded();
60     virtual void fontCacheInvalidated();
61 
62     bool isEmpty() const;
63 
64     CachedResourceLoader* cachedResourceLoader() const;
65 
66     virtual void registerForInvalidationCallbacks(FontSelectorClient*);
67     virtual void unregisterForInvalidationCallbacks(FontSelectorClient*);
68 
69 private:
70     CSSFontSelector(Document*);
71 
72     void dispatchInvalidationCallbacks();
73 
74     Document* m_document;
75     HashMap<String, Vector<RefPtr<CSSFontFace> >*, CaseFoldingHash> m_fontFaces;
76     HashMap<String, Vector<RefPtr<CSSFontFace> >*, CaseFoldingHash> m_locallyInstalledFontFaces;
77     HashMap<String, HashMap<unsigned, RefPtr<CSSSegmentedFontFace> >*, CaseFoldingHash> m_fonts;
78     HashSet<FontSelectorClient*> m_clients;
79 };
80 
81 } // namespace WebCore
82 
83 #endif // CSSFontSelector_h
84