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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 #ifndef BASE_MESSAGE_PUMP_DISPATCHER_H | 5 #ifndef BASE_MESSAGE_LOOP_MESSAGE_PUMP_DISPATCHER_H |
6 #define BASE_MESSAGE_PUMP_DISPATCHER_H | 6 #define BASE_MESSAGE_LOOP_MESSAGE_PUMP_DISPATCHER_H |
7 | 7 |
8 #include "base/base_export.h" | 8 #include "base/base_export.h" |
9 #include "base/event_types.h" | 9 #include "base/event_types.h" |
10 | 10 |
11 namespace base { | 11 namespace base { |
12 | 12 |
13 // Dispatcher is used during a nested invocation of Run to dispatch events when | 13 // Dispatcher is used during a nested invocation of Run to dispatch events when |
14 // |RunLoop(dispatcher).Run()| is used. If |RunLoop().Run()| is invoked, | 14 // |RunLoop(dispatcher).Run()| is used. If |RunLoop().Run()| is invoked, |
15 // MessageLoop does not dispatch events (or invoke TranslateMessage), rather | 15 // MessageLoop does not dispatch events (or invoke TranslateMessage), rather |
16 // every message is passed to Dispatcher's Dispatch method for dispatch. It is | 16 // every message is passed to Dispatcher's Dispatch method for dispatch. It is |
17 // up to the Dispatcher whether or not to dispatch the event. | 17 // up to the Dispatcher whether or not to dispatch the event. |
18 // | 18 // |
19 // The nested loop is exited by either posting a quit, or returning false | 19 // The nested loop is exited by either posting a quit, or returning false |
20 // from Dispatch. | 20 // from Dispatch. |
21 class BASE_EXPORT MessagePumpDispatcher { | 21 class BASE_EXPORT MessagePumpDispatcher { |
22 public: | 22 public: |
23 virtual ~MessagePumpDispatcher() {} | 23 virtual ~MessagePumpDispatcher() {} |
24 | 24 |
25 // Dispatches the event. If true is returned processing continues as | 25 // Dispatches the event. If true is returned processing continues as |
26 // normal. If false is returned, the nested loop exits immediately. | 26 // normal. If false is returned, the nested loop exits immediately. |
27 virtual bool Dispatch(const NativeEvent& event) = 0; | 27 virtual bool Dispatch(const NativeEvent& event) = 0; |
28 }; | 28 }; |
29 | 29 |
30 } // namespace base | 30 } // namespace base |
31 | 31 |
32 #endif // BASE_MESSAGE_PUMP_DISPATCHER_H | 32 #endif // BASE_MESSAGE_LOOP_MESSAGE_PUMP_DISPATCHER_H |
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