xref: /aosp_15_r20/external/libchrome/base/callback_forward.h (revision 635a864187cb8b6c713ff48b7e790a6b21769273)
1*635a8641SAndroid Build Coastguard Worker // Copyright (c) 2011 The Chromium Authors. All rights reserved.
2*635a8641SAndroid Build Coastguard Worker // Use of this source code is governed by a BSD-style license that can be
3*635a8641SAndroid Build Coastguard Worker // found in the LICENSE file.
4*635a8641SAndroid Build Coastguard Worker 
5*635a8641SAndroid Build Coastguard Worker #ifndef BASE_CALLBACK_FORWARD_H_
6*635a8641SAndroid Build Coastguard Worker #define BASE_CALLBACK_FORWARD_H_
7*635a8641SAndroid Build Coastguard Worker 
8*635a8641SAndroid Build Coastguard Worker namespace base {
9*635a8641SAndroid Build Coastguard Worker 
10*635a8641SAndroid Build Coastguard Worker template <typename Signature>
11*635a8641SAndroid Build Coastguard Worker class OnceCallback;
12*635a8641SAndroid Build Coastguard Worker 
13*635a8641SAndroid Build Coastguard Worker template <typename Signature>
14*635a8641SAndroid Build Coastguard Worker class RepeatingCallback;
15*635a8641SAndroid Build Coastguard Worker 
16*635a8641SAndroid Build Coastguard Worker template <typename Signature>
17*635a8641SAndroid Build Coastguard Worker using Callback = RepeatingCallback<Signature>;
18*635a8641SAndroid Build Coastguard Worker 
19*635a8641SAndroid Build Coastguard Worker // Syntactic sugar to make Callback<void()> easier to declare since it
20*635a8641SAndroid Build Coastguard Worker // will be used in a lot of APIs with delayed execution.
21*635a8641SAndroid Build Coastguard Worker using OnceClosure = OnceCallback<void()>;
22*635a8641SAndroid Build Coastguard Worker using RepeatingClosure = RepeatingCallback<void()>;
23*635a8641SAndroid Build Coastguard Worker using Closure = Callback<void()>;
24*635a8641SAndroid Build Coastguard Worker 
25*635a8641SAndroid Build Coastguard Worker }  // namespace base
26*635a8641SAndroid Build Coastguard Worker 
27*635a8641SAndroid Build Coastguard Worker #endif  // BASE_CALLBACK_FORWARD_H_
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