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      1 /*
      2  * Copyright (C) 2011 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 WebGLContextObject_h
     27 #define WebGLContextObject_h
     28 
     29 #include "core/html/canvas/WebGLObject.h"
     30 
     31 namespace WebCore {
     32 
     33 class GraphicsContext3D;
     34 class WebGLRenderingContext;
     35 
     36 // WebGLContextObject the base class for objects that are owned by a specific
     37 // WebGLRenderingContext.
     38 class WebGLContextObject : public WebGLObject {
     39 public:
     40     virtual ~WebGLContextObject();
     41 
     42     WebGLRenderingContext* context() const { return m_context; }
     43 
     44     virtual bool validate(const WebGLContextGroup*, const WebGLRenderingContext* context) const
     45     {
     46         return context == m_context;
     47     }
     48 
     49     void detachContext();
     50 
     51 protected:
     52     WebGLContextObject(WebGLRenderingContext*);
     53 
     54     virtual bool hasGroupOrContext() const
     55     {
     56         return m_context;
     57     }
     58 
     59     virtual GraphicsContext3D* getAGraphicsContext3D() const;
     60 
     61 private:
     62     WebGLRenderingContext* m_context;
     63 };
     64 
     65 } // namespace WebCore
     66 
     67 #endif // WebGLContextObject_h
     68