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| 1 // Copyright (c) 2013 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 CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_BASE_SCREEN_HANDLER_UTILS_H_ | |
| 6 #define CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_BASE_SCREEN_HANDLER_UTILS_H_ | |
| 7 | |
| 8 #include <cstddef> | |
| 9 #include <string> | |
| 10 | |
| 11 #include "base/callback.h" | |
| 12 #include "base/logging.h" | |
| 13 #include "base/strings/string16.h" | |
| 14 #include "base/values.h" | |
| 15 | |
| 16 namespace chromeos { | |
| 17 | |
| 18 typedef std::vector<std::string> StringList; | |
| 19 typedef std::vector<base::string16> String16List; | |
| 20 | |
| 21 template<typename T> | |
| 22 struct UnwrapConstRef { | |
| 23 typedef T Type; | |
| 24 }; | |
| 25 | |
| 26 template<typename T> | |
| 27 struct UnwrapConstRef<const T&> { | |
| 28 typedef T Type; | |
| 29 }; | |
| 30 | |
| 31 bool ParseValue(const base::Value* value, bool* out_value); | |
| 32 bool ParseValue(const base::Value* value, int* out_value); | |
| 33 bool ParseValue(const base::Value* value, double* out_value); | |
| 34 bool ParseValue(const base::Value* value, std::string* out_value); | |
| 35 bool ParseValue(const base::Value* value, base::string16* out_value); | |
| 36 bool ParseValue(const base::Value* value, | |
| 37 const base::DictionaryValue** out_value); | |
| 38 bool ParseValue(const base::Value* value, StringList* out_value); | |
| 39 bool ParseValue(const base::Value* value, String16List* out_value); | |
| 40 | |
| 41 template<typename T> | |
| 42 inline bool GetArg(const base::ListValue* args, size_t index, T* out_value) { | |
| 43 const base::Value* value; | |
| 44 if (!args->Get(index, &value)) | |
| 45 return false; | |
| 46 return ParseValue(value, out_value); | |
| 47 } | |
| 48 | |
| 49 base::FundamentalValue MakeValue(bool v); | |
| 50 base::FundamentalValue MakeValue(int v); | |
| 51 base::FundamentalValue MakeValue(double v); | |
| 52 base::StringValue MakeValue(const std::string& v); | |
| 53 base::StringValue MakeValue(const base::string16& v); | |
| 54 | |
| 55 template<typename T> | |
| 56 inline const T& MakeValue(const T& v) { | |
| 57 return v; | |
| 58 } | |
| 59 | |
| 60 void CallbackWrapper0(base::Callback<void()> callback, | |
| 61 const base::ListValue* args); | |
| 62 | |
| 63 template<typename A1> | |
| 64 void CallbackWrapper1(base::Callback<void(A1)> callback, | |
| 65 const base::ListValue* args) { | |
| 66 DCHECK(args); | |
| 67 DCHECK_EQ(1u, args->GetSize()); | |
| 68 typename UnwrapConstRef<A1>::Type arg1; | |
| 69 if (!GetArg(args, 0, &arg1)) { | |
| 70 NOTREACHED(); | |
| 71 return; | |
| 72 } | |
| 73 callback.Run(arg1); | |
| 74 } | |
| 75 | |
| 76 template<typename A1, typename A2> | |
| 77 void CallbackWrapper2(base::Callback<void(A1, A2)> callback, | |
| 78 const base::ListValue* args) { | |
| 79 DCHECK(args); | |
| 80 DCHECK_EQ(2u, args->GetSize()); | |
| 81 typename UnwrapConstRef<A1>::Type arg1; | |
| 82 typename UnwrapConstRef<A2>::Type arg2; | |
| 83 if (!GetArg(args, 0, &arg1) || !GetArg(args, 1, &arg2)) { | |
| 84 NOTREACHED(); | |
| 85 return; | |
| 86 } | |
| 87 callback.Run(arg1, arg2); | |
| 88 } | |
| 89 | |
| 90 template<typename A1, typename A2, typename A3> | |
| 91 void CallbackWrapper3(base::Callback<void(A1, A2, A3)> callback, | |
| 92 const base::ListValue* args) { | |
| 93 DCHECK(args); | |
| 94 DCHECK_EQ(3u, args->GetSize()); | |
| 95 typename UnwrapConstRef<A1>::Type arg1; | |
| 96 typename UnwrapConstRef<A2>::Type arg2; | |
| 97 typename UnwrapConstRef<A3>::Type arg3; | |
| 98 if (!GetArg(args, 0, &arg1) || | |
| 99 !GetArg(args, 1, &arg2) || | |
| 100 !GetArg(args, 2, &arg3)) { | |
| 101 NOTREACHED(); | |
| 102 return; | |
| 103 } | |
| 104 callback.Run(arg1, arg2, arg3); | |
| 105 } | |
| 106 | |
| 107 template<typename A1, typename A2, typename A3, typename A4> | |
| 108 void CallbackWrapper4(base::Callback<void(A1, A2, A3, A4)> callback, | |
| 109 const base::ListValue* args) { | |
| 110 DCHECK(args); | |
| 111 DCHECK_EQ(4u, args->GetSize()); | |
| 112 typename UnwrapConstRef<A1>::Type arg1; | |
| 113 typename UnwrapConstRef<A2>::Type arg2; | |
| 114 typename UnwrapConstRef<A3>::Type arg3; | |
| 115 typename UnwrapConstRef<A4>::Type arg4; | |
| 116 if (!GetArg(args, 0, &arg1) || | |
| 117 !GetArg(args, 1, &arg2) || | |
| 118 !GetArg(args, 2, &arg3) || | |
| 119 !GetArg(args, 3, &arg4)) { | |
| 120 NOTREACHED(); | |
| 121 return; | |
| 122 } | |
| 123 callback.Run(arg1, arg2, arg3, arg4); | |
| 124 } | |
| 125 | |
| 126 } // namespace chromeos | |
| 127 | |
| 128 #endif // CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_BASE_SCREEN_HANDLER_UTILS_H_ | |
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