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| 1 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef O3D_GPU_PLUGIN_NP_UTILS_BASE_NP_OBJECT_H_ | |
| 6 #define O3D_GPU_PLUGIN_NP_UTILS_BASE_NP_OBJECT_H_ | |
| 7 | |
| 8 #include "third_party/npapi/bindings/npapi.h" | |
| 9 #include "third_party/npapi/bindings/npruntime.h" | |
| 10 | |
| 11 namespace o3d { | |
| 12 namespace gpu_plugin { | |
| 13 | |
| 14 // This class is a base class for NPObjects implemented in C++. It forwards | |
| 15 // The NPObject calls through to virtual functions implemented by the subclass. | |
| 16 class BaseNPObject : public NPObject { | |
| 17 public: | |
| 18 // Returns the NPClass for the concrete BaseNPObject subclass T. | |
| 19 template <typename NPObjectType> | |
| 20 static const NPClass* GetNPClass(); | |
| 21 | |
| 22 NPP npp() const { | |
| 23 return npp_; | |
| 24 } | |
| 25 | |
| 26 // Override these in subclass. | |
| 27 virtual void Invalidate(); | |
| 28 | |
| 29 virtual bool HasMethod(NPIdentifier name); | |
| 30 | |
| 31 virtual bool Invoke(NPIdentifier name, | |
| 32 const NPVariant* args, | |
| 33 uint32_t num_args, | |
| 34 NPVariant* result); | |
| 35 | |
| 36 virtual bool InvokeDefault(const NPVariant* args, | |
| 37 uint32_t num_args, | |
| 38 NPVariant* result); | |
| 39 | |
| 40 virtual bool HasProperty(NPIdentifier name); | |
| 41 | |
| 42 virtual bool GetProperty(NPIdentifier name, NPVariant* result); | |
| 43 | |
| 44 virtual bool SetProperty(NPIdentifier name, const NPVariant* value); | |
| 45 | |
| 46 virtual bool RemoveProperty(NPIdentifier name); | |
| 47 | |
| 48 virtual bool Enumerate(NPIdentifier** names, | |
| 49 uint32_t* count); | |
| 50 | |
| 51 virtual bool Construct(const NPVariant* args, | |
| 52 uint32_t num_args, | |
| 53 NPVariant* result); | |
| 54 | |
| 55 protected: | |
| 56 | |
| 57 explicit BaseNPObject(NPP npp); | |
| 58 virtual ~BaseNPObject(); | |
| 59 | |
| 60 private: | |
| 61 // This template version of the NPClass allocate function creates a subclass | |
| 62 // of BaseNPObject. | |
| 63 template <typename NPObjectType> | |
| 64 static NPObject* AllocateImpl(NPP npp, NPClass*) { | |
| 65 return new NPObjectType(npp); | |
| 66 } | |
| 67 | |
| 68 // These implementations of the NPClass functions forward to the virtual | |
| 69 // functions in BaseNPObject. | |
| 70 static void DeallocateImpl(NPObject* object); | |
| 71 | |
| 72 static void InvalidateImpl(NPObject* object); | |
| 73 | |
| 74 static bool HasMethodImpl(NPObject* object, NPIdentifier name); | |
| 75 | |
| 76 static bool InvokeImpl(NPObject* object, | |
| 77 NPIdentifier name, | |
| 78 const NPVariant* args, | |
| 79 uint32_t num_args, | |
| 80 NPVariant* result); | |
| 81 | |
| 82 static bool InvokeDefaultImpl(NPObject* object, | |
| 83 const NPVariant* args, | |
| 84 uint32_t num_args, | |
| 85 NPVariant* result); | |
| 86 | |
| 87 static bool HasPropertyImpl(NPObject* object, NPIdentifier name); | |
| 88 | |
| 89 static bool GetPropertyImpl(NPObject* object, | |
| 90 NPIdentifier name, | |
| 91 NPVariant* result); | |
| 92 | |
| 93 static bool SetPropertyImpl(NPObject* object, | |
| 94 NPIdentifier name, | |
| 95 const NPVariant* value); | |
| 96 | |
| 97 static bool RemovePropertyImpl(NPObject* object, NPIdentifier name); | |
| 98 | |
| 99 static bool EnumerateImpl(NPObject* object, | |
| 100 NPIdentifier** names, | |
| 101 uint32_t* count); | |
| 102 | |
| 103 static bool ConstructImpl(NPObject* object, | |
| 104 const NPVariant* args, | |
| 105 uint32_t num_args, | |
| 106 NPVariant* result); | |
| 107 | |
| 108 NPP npp_; | |
| 109 | |
| 110 DISALLOW_COPY_AND_ASSIGN(BaseNPObject); | |
| 111 }; | |
| 112 | |
| 113 template <typename NPObjectType> | |
| 114 const NPClass* BaseNPObject::GetNPClass() { | |
| 115 static NPClass np_class = { | |
| 116 NP_CLASS_STRUCT_VERSION, | |
| 117 AllocateImpl<NPObjectType>, | |
| 118 DeallocateImpl, | |
| 119 InvalidateImpl, | |
| 120 HasMethodImpl, | |
| 121 InvokeImpl, | |
| 122 InvokeDefaultImpl, | |
| 123 HasPropertyImpl, | |
| 124 GetPropertyImpl, | |
| 125 SetPropertyImpl, | |
| 126 RemovePropertyImpl, | |
| 127 EnumerateImpl, | |
| 128 ConstructImpl, | |
| 129 }; | |
| 130 return &np_class; | |
| 131 }; | |
| 132 } // namespace gpu_plugin | |
| 133 } // namespace o3d | |
| 134 | |
| 135 #endif // O3D_GPU_PLUGIN_NP_UTILS_BASE_NP_OBJECT_H_ | |
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Chromium Code Reviews
Issue 196032:
Replaced BaseNPObject with DefaultNPObject because...... (Closed)
Base URL: svn://chrome-svn/chrome/trunk/src/