1 // Copyright (c) 2012 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 REMOTING_HOST_PLUGIN_HOST_PLUGIN_UTILS_H_ 6 #define REMOTING_HOST_PLUGIN_HOST_PLUGIN_UTILS_H_ 7 8 #include <string> 9 10 #include "third_party/npapi/bindings/npapi.h" 11 #include "third_party/npapi/bindings/npfunctions.h" 12 #include "third_party/npapi/bindings/npruntime.h" 13 14 namespace remoting { 15 16 // Global netscape functions initialized in NP_Initialize. 17 extern NPNetscapeFuncs* g_npnetscape_funcs; 18 19 // Convert an NPIdentifier into a std::string. 20 std::string StringFromNPIdentifier(NPIdentifier identifier); 21 22 // Convert an NPVariant into a std::string. 23 std::string StringFromNPVariant(const NPVariant& variant); 24 25 // Convert a std::string into an NPVariant. 26 // Caller is responsible for making sure that NPN_ReleaseVariantValue is 27 // called on returned value. 28 NPVariant NPVariantFromString(const std::string& val); 29 30 // Convert an NPVariant into an NSPObject. 31 NPObject* ObjectFromNPVariant(const NPVariant& variant); 32 33 // Scoped reference pointer for NPObjects. All objects using this class 34 // must be owned by g_npnetscape_funcs. 35 class ScopedRefNPObject { 36 public: 37 ScopedRefNPObject(); 38 explicit ScopedRefNPObject(NPObject* object); 39 explicit ScopedRefNPObject(const ScopedRefNPObject& object); 40 ~ScopedRefNPObject(); 41 42 // Release the held reference and replace it with |object|, incrementing 43 // its reference count. 44 ScopedRefNPObject& operator=(NPObject* object); 45 ScopedRefNPObject& operator=(const ScopedRefNPObject& object); 46 47 NPObject* get() const { return object_; } 48 49 private: 50 NPObject* object_; 51 }; 52 53 } // namespace remoting 54 55 #endif // REMOTING_HOST_PLUGIN_HOST_PLUGIN_UTILS_H_ 56
