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      1 /*
      2  * Copyright (C) 2011 Adobe Systems Incorporated. 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  *
      8  * 1. Redistributions of source code must retain the above
      9  *    copyright notice, this list of conditions and the following
     10  *    disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above
     12  *    copyright notice, this list of conditions and the following
     13  *    disclaimer in the documentation and/or other materials
     14  *    provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AS IS AND ANY
     17  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
     20  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
     21  * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     22  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     23  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
     25  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
     26  * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     27  * SUCH DAMAGE.
     28  */
     29 
     30 #ifndef CSSShaderValue_h
     31 #define CSSShaderValue_h
     32 
     33 #include "core/css/CSSValue.h"
     34 
     35 namespace WebCore {
     36 
     37 class ResourceFetcher;
     38 class KURL;
     39 class StyleFetchedShader;
     40 class StyleShader;
     41 
     42 class CSSShaderValue : public CSSValue {
     43 public:
     44     static PassRefPtr<CSSShaderValue> create(const String& url) { return adoptRef(new CSSShaderValue(url)); }
     45     ~CSSShaderValue();
     46 
     47     const String& format() const { return m_format; }
     48     void setFormat(const String& format) { m_format = format; }
     49 
     50     KURL completeURL(ResourceFetcher*) const;
     51     StyleFetchedShader* resource(ResourceFetcher*);
     52     StyleShader* cachedOrPendingShader();
     53 
     54     String customCssText() const;
     55 
     56     bool equals(const CSSShaderValue&) const;
     57 
     58 private:
     59     CSSShaderValue(const String& url);
     60 
     61     String m_url;
     62     String m_format;
     63     RefPtr<StyleShader> m_shader;
     64     bool m_accessedShader;
     65 };
     66 
     67 // This will catch anyone doing an unnecessary cast.
     68 CSSShaderValue* toCSSShaderValue(const CSSShaderValue*);
     69 
     70 inline CSSShaderValue* toCSSShaderValue(CSSValue* value)
     71 {
     72     return value->isCSSShaderValue() ? static_cast<CSSShaderValue*>(value) : 0;
     73 }
     74 
     75 } // namespace WebCore
     76 
     77 
     78 #endif // CSSShaderValue_h
     79