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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 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 #ifndef MEDIA_CAPTURE_VIDEO_SCOPED_RESULT_CALLBACK_H_ | 5 #ifndef MEDIA_CAPTURE_VIDEO_SCOPED_RESULT_CALLBACK_H_ |
6 #define MEDIA_CAPTURE_VIDEO_SCOPED_RESULT_CALLBACK_H_ | 6 #define MEDIA_CAPTURE_VIDEO_SCOPED_RESULT_CALLBACK_H_ |
7 | 7 |
8 #include "base/callback_forward.h" | 8 #include "base/callback_forward.h" |
9 #include "base/macros.h" | |
10 #include "mojo/public/cpp/bindings/callback.h" | 9 #include "mojo/public/cpp/bindings/callback.h" |
11 | 10 |
12 namespace media { | 11 namespace media { |
13 | 12 |
14 // This class guarantees that |callback_| has either been called or will pass it | 13 // This class guarantees that |callback_| has either been called or will pass it |
15 // to |on_error_callback_| on destruction. Inspired by ScopedWebCallbacks<>. | 14 // to |on_error_callback_| on destruction. Inspired by ScopedWebCallbacks<>. |
16 template <typename CallbackType> | 15 template <typename CallbackType> |
17 class ScopedResultCallback { | 16 class ScopedResultCallback { |
| 17 MOVE_ONLY_TYPE_FOR_CPP_03(ScopedResultCallback); |
| 18 |
18 public: | 19 public: |
19 using OnErrorCallback = base::Callback<void(const CallbackType&)>; | 20 using OnErrorCallback = base::Callback<void(const CallbackType&)>; |
20 ScopedResultCallback(const CallbackType& callback, | 21 ScopedResultCallback(const CallbackType& callback, |
21 const OnErrorCallback& on_error_callback) | 22 const OnErrorCallback& on_error_callback) |
22 : callback_(callback), on_error_callback_(on_error_callback) {} | 23 : callback_(callback), on_error_callback_(on_error_callback) {} |
23 | 24 |
24 ~ScopedResultCallback() { | 25 ~ScopedResultCallback() { |
25 if (!callback_.is_null()) | 26 if (!callback_.is_null()) |
26 on_error_callback_.Run(callback_); | 27 on_error_callback_.Run(callback_); |
27 } | 28 } |
(...skipping 15 matching lines...) Expand all Loading... |
43 on_error_callback_.Reset(); | 44 on_error_callback_.Reset(); |
44 // TODO(mcasas): Use base::ResetAndReturn() when mojo::Callback<> is | 45 // TODO(mcasas): Use base::ResetAndReturn() when mojo::Callback<> is |
45 // compatible with base::Callback<>, see https://crbug.com/596521. | 46 // compatible with base::Callback<>, see https://crbug.com/596521. |
46 callback_.Run(std::forward<Args>(args)...); | 47 callback_.Run(std::forward<Args>(args)...); |
47 callback_.reset(); | 48 callback_.reset(); |
48 } | 49 } |
49 | 50 |
50 private: | 51 private: |
51 CallbackType callback_; | 52 CallbackType callback_; |
52 OnErrorCallback on_error_callback_; | 53 OnErrorCallback on_error_callback_; |
53 | |
54 DISALLOW_COPY_AND_ASSIGN(ScopedResultCallback); | |
55 }; | 54 }; |
56 | 55 |
57 } // namespace media | 56 } // namespace media |
58 | 57 |
59 #endif // MEDIA_CAPTURE_VIDEO_SCOPED_RESULT_CALLBACK_H_ | 58 #endif // MEDIA_CAPTURE_VIDEO_SCOPED_RESULT_CALLBACK_H_ |
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