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      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:
     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 
     55     void clearDocument() { m_document = 0; }
     56 
     57     void addFontFaceRule(const CSSFontFaceRule*);
     58 
     59     void fontLoaded();
     60     virtual void fontCacheInvalidated();
     61 
     62     void retireCustomFont(FontData*);
     63 
     64     bool isEmpty() const;
     65 
     66     CachedResourceLoader* cachedResourceLoader() const;
     67 
     68     virtual void registerForInvalidationCallbacks(FontSelectorClient*);
     69     virtual void unregisterForInvalidationCallbacks(FontSelectorClient*);
     70 
     71 private:
     72     CSSFontSelector(Document*);
     73 
     74     void dispatchInvalidationCallbacks();
     75 
     76     Document* m_document;
     77     HashMap<String, Vector<RefPtr<CSSFontFace> >*, CaseFoldingHash> m_fontFaces;
     78     HashMap<String, Vector<RefPtr<CSSFontFace> >*, CaseFoldingHash> m_locallyInstalledFontFaces;
     79     HashMap<String, HashMap<unsigned, RefPtr<CSSSegmentedFontFace> >*, CaseFoldingHash> m_fonts;
     80     HashSet<FontSelectorClient*> m_clients;
     81 };
     82 
     83 } // namespace WebCore
     84 
     85 #endif // CSSFontSelector_h
     86