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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // This defines helpful methods for dealing with Callbacks. Because Callbacks | 5 // This defines helpful methods for dealing with Callbacks. Because Callbacks |
6 // are implemented using templates, with a class per callback signature, adding | 6 // are implemented using templates, with a class per callback signature, adding |
7 // methods to Callback<> itself is unattractive (lots of extra code gets | 7 // methods to Callback<> itself is unattractive (lots of extra code gets |
8 // generated). Instead, consider adding methods here. | 8 // generated). Instead, consider adding methods here. |
9 // | 9 // |
10 // ResetAndReturn(&cb) is like cb.Reset() but allows executing a callback (via a | 10 // ResetAndReturn(&cb) is like cb.Reset() but allows executing a callback (via a |
11 // copy) after the original callback is Reset(). This can be handy if Run() | 11 // move or copy) after the original callback is Reset(). This can be handy if |
12 // reads/writes the variable holding the Callback. | 12 // Run() reads/writes the variable holding the Callback. |
13 | 13 |
14 #ifndef BASE_CALLBACK_HELPERS_H_ | 14 #ifndef BASE_CALLBACK_HELPERS_H_ |
15 #define BASE_CALLBACK_HELPERS_H_ | 15 #define BASE_CALLBACK_HELPERS_H_ |
16 | 16 |
17 #include "base/callback.h" | 17 #include "base/callback.h" |
18 #include "base/compiler_specific.h" | 18 #include "base/compiler_specific.h" |
19 #include "base/macros.h" | 19 #include "base/macros.h" |
20 | 20 |
21 namespace base { | 21 namespace base { |
22 | 22 |
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55 | 55 |
56 private: | 56 private: |
57 Closure closure_; | 57 Closure closure_; |
58 | 58 |
59 DISALLOW_COPY_AND_ASSIGN(ScopedClosureRunner); | 59 DISALLOW_COPY_AND_ASSIGN(ScopedClosureRunner); |
60 }; | 60 }; |
61 | 61 |
62 } // namespace base | 62 } // namespace base |
63 | 63 |
64 #endif // BASE_CALLBACK_HELPERS_H_ | 64 #endif // BASE_CALLBACK_HELPERS_H_ |
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