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| 1 // Copyright 2010 Google Inc. | |
| 2 // | |
| 3 // Licensed under the Apache License, Version 2.0 (the "License"); | |
| 4 // you may not use this file except in compliance with the License. | |
| 5 // You may obtain a copy of the License at | |
| 6 // | |
| 7 // http://www.apache.org/licenses/LICENSE-2.0 | |
| 8 // | |
| 9 // Unless required by applicable law or agreed to in writing, software | |
| 10 // distributed under the License is distributed on an "AS IS" BASIS, | |
| 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 12 // See the License for the specific language governing permissions and | |
| 13 // limitations under the License. | |
| 14 // ======================================================================== | |
| 15 // | |
| 16 // NpFunctionHost hosts an NPObject inside an IDispatch interface to allow | |
| 17 // invoking NPAPI functions from a COM environment. Types are automatically | |
| 18 // marshalled between NPVariant and VARIANT using the functions in | |
| 19 // variant_utils.h. (For the reverse -- providing an NPObject interface to | |
| 20 // a COM object implementing IDispatch -- see DispatchHost.) | |
| 21 // | |
| 22 // Note that this currently only supports functions; this does not currently | |
| 23 // support objects. NPN_Enumerate() only provides method/property names, | |
| 24 // not return types or argument counts/types, which makes it impossible to | |
| 25 // properly implement IDispatch::GetTypeInfo(). (However, we can implement | |
| 26 // GetIDsOfNames() if we need it in the future.) | |
| 27 | |
| 28 #ifndef OMAHA_PLUGINS_UPDATE_NPAPI_NPFUNCTION_HOST_H_ | |
| 29 #define OMAHA_PLUGINS_UPDATE_NPAPI_NPFUNCTION_HOST_H_ | |
| 30 | |
| 31 #include <atlbase.h> | |
| 32 #include <atlcom.h> | |
| 33 | |
| 34 #include "base/basictypes.h" | |
| 35 #include "third_party/npapi/bindings/nphostapi.h" | |
| 36 | |
| 37 namespace omaha { | |
| 38 | |
| 39 class NpFunctionHostTest; | |
| 40 | |
| 41 class ATL_NO_VTABLE NpFunctionHost | |
| 42 : public CComObjectRootEx<CComObjectThreadModel>, | |
| 43 public IDispatch { | |
| 44 public: | |
| 45 static HRESULT Create(NPP npp, NPObject* npobj, IDispatch** host); | |
| 46 | |
| 47 BEGIN_COM_MAP(NpFunctionHost) | |
| 48 COM_INTERFACE_ENTRY(IDispatch) | |
| 49 END_COM_MAP() | |
| 50 | |
| 51 // IDispatch methods. | |
| 52 STDMETHOD(GetTypeInfoCount)(UINT* pctinfo); | |
| 53 STDMETHOD(GetTypeInfo)(UINT iTInfo, | |
| 54 LCID lcid, | |
| 55 ITypeInfo** ppTInfo); | |
| 56 STDMETHOD(GetIDsOfNames)(REFIID riid, | |
| 57 LPOLESTR* rgszNames, | |
| 58 UINT cNames, | |
| 59 LCID lcid, | |
| 60 DISPID* rgDispId); | |
| 61 STDMETHOD(Invoke)(DISPID dispIdMember, | |
| 62 REFIID riid, | |
| 63 LCID lcid, | |
| 64 WORD wFlags, | |
| 65 DISPPARAMS* pDispParams, | |
| 66 VARIANT* pVarResult, | |
| 67 EXCEPINFO* pExcepInfo, | |
| 68 UINT* puArgErr); | |
| 69 | |
| 70 // CComObjectRootEx overrides. | |
| 71 void FinalRelease(); | |
| 72 | |
| 73 protected: | |
| 74 NpFunctionHost(); | |
| 75 virtual ~NpFunctionHost() {} | |
| 76 | |
| 77 private: | |
| 78 NPP npp_; | |
| 79 NPObject* obj_; | |
| 80 | |
| 81 DISALLOW_COPY_AND_ASSIGN(NpFunctionHost); | |
| 82 }; | |
| 83 | |
| 84 } // namespace omaha | |
| 85 | |
| 86 #endif // OMAHA_PLUGINS_UPDATE_NPAPI_NPFUNCTION_HOST_H_ | |
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