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 28namespace content { 29class PageState; 30} 31 32namespace net { 33class HostPortPair; 34class IPEndPoint; 35} 36 37namespace IPC { 38 39template <> 40struct 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 47template <> 48struct 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 55template<> 56struct 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 63template <> 64struct 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 71template <> 72struct 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 79template <> 80struct 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) 112template<> 113struct 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