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 // This file is used to define IPC::ParamTraits<> specializations for a number 6 // of types so that they can be serialized over IPC. IPC::ParamTraits<> 7 // specializations for basic types (like int and std::string) and types in the 8 // 'base' project can be found in ipc/ipc_message_utils.h. This file contains 9 // specializations for types that are used by the content code, and which need 10 // manual serialization code. This is usually because they're not structs with 11 // public members, or because the same type is being used in multiple 12 // *_messages.h headers. 13 14 #ifndef CONTENT_PUBLIC_COMMON_COMMON_PARAM_TRAITS_H_ 15 #define CONTENT_PUBLIC_COMMON_COMMON_PARAM_TRAITS_H_ 16 17 #include <string> 18 19 #include "base/memory/ref_counted.h" 20 #include "content/common/content_export.h" 21 #include "content/public/common/common_param_traits_macros.h" 22 #include "ipc/ipc_message_utils.h" 23 #include "ui/gfx/native_widget_types.h" 24 #include "ui/surface/transport_dib.h" 25 #include "url/gurl.h" 26 #include "url/origin.h" 27 28 namespace content { 29 class PageState; 30 } 31 32 namespace net { 33 class HostPortPair; 34 class IPEndPoint; 35 } 36 37 namespace IPC { 38 39 template <> 40 struct CONTENT_EXPORT ParamTraits<GURL> { 41 typedef GURL param_type; 42 static void Write(Message* m, const param_type& p); 43 static bool Read(const Message* m, PickleIterator* iter, param_type* p); 44 static void Log(const param_type& p, std::string* l); 45 }; 46 47 template <> 48 struct CONTENT_EXPORT ParamTraits<url::Origin> { 49 typedef url::Origin param_type; 50 static void Write(Message* m, const param_type& p); 51 static bool Read(const Message* m, PickleIterator* iter, param_type* p); 52 static void Log(const param_type& p, std::string* l); 53 }; 54 55 template<> 56 struct CONTENT_EXPORT ParamTraits<net::HostPortPair> { 57 typedef net::HostPortPair param_type; 58 static void Write(Message* m, const param_type& p); 59 static bool Read(const Message* m, PickleIterator* iter, param_type* r); 60 static void Log(const param_type& p, std::string* l); 61 }; 62 63 template <> 64 struct CONTENT_EXPORT ParamTraits<net::IPEndPoint> { 65 typedef net::IPEndPoint param_type; 66 static void Write(Message* m, const param_type& p); 67 static bool Read(const Message* m, PickleIterator* iter, param_type* p); 68 static void Log(const param_type& p, std::string* l); 69 }; 70 71 template <> 72 struct CONTENT_EXPORT ParamTraits<content::PageState> { 73 typedef content::PageState param_type; 74 static void Write(Message* m, const param_type& p); 75 static bool Read(const Message* m, PickleIterator* iter, param_type* p); 76 static void Log(const param_type& p, std::string* l); 77 }; 78 79 template <> 80 struct ParamTraits<gfx::NativeWindow> { 81 typedef gfx::NativeWindow param_type; 82 static void Write(Message* m, const param_type& p) { 83 #if defined(OS_WIN) 84 // HWNDs are always 32 bits on Windows, even on 64 bit systems. 85 m->WriteUInt32(reinterpret_cast<uint32>(p)); 86 #else 87 m->WriteData(reinterpret_cast<const char*>(&p), sizeof(p)); 88 #endif 89 } 90 static bool Read(const Message* m, PickleIterator* iter, param_type* r) { 91 #if defined(OS_WIN) 92 return m->ReadUInt32(iter, reinterpret_cast<uint32*>(r)); 93 #else 94 const char *data; 95 int data_size = 0; 96 bool result = m->ReadData(iter, &data, &data_size); 97 if (result && data_size == sizeof(gfx::NativeWindow)) { 98 memcpy(r, data, sizeof(gfx::NativeWindow)); 99 } else { 100 result = false; 101 NOTREACHED(); 102 } 103 return result; 104 #endif 105 } 106 static void Log(const param_type& p, std::string* l) { 107 l->append("<gfx::NativeWindow>"); 108 } 109 }; 110 111 #if defined(OS_WIN) 112 template<> 113 struct ParamTraits<TransportDIB::Id> { 114 typedef TransportDIB::Id param_type; 115 static void Write(Message* m, const param_type& p) { 116 WriteParam(m, p.handle); 117 WriteParam(m, p.sequence_num); 118 } 119 static bool Read(const Message* m, PickleIterator* iter, param_type* r) { 120 return (ReadParam(m, iter, &r->handle) && 121 ReadParam(m, iter, &r->sequence_num)); 122 } 123 static void Log(const param_type& p, std::string* l) { 124 l->append("TransportDIB("); 125 LogParam(p.handle, l); 126 l->append(", "); 127 LogParam(p.sequence_num, l); 128 l->append(")"); 129 } 130 }; 131 #endif 132 133 } // namespace IPC 134 135 #endif // CONTENT_PUBLIC_COMMON_COMMON_PARAM_TRAITS_H_ 136