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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_LOOP_MESSAGE_PUMP_GLIB_H_ | 5 #ifndef BASE_MESSAGE_LOOP_MESSAGE_PUMP_GLIB_H_ |
6 #define BASE_MESSAGE_LOOP_MESSAGE_PUMP_GLIB_H_ | 6 #define BASE_MESSAGE_LOOP_MESSAGE_PUMP_GLIB_H_ |
7 | 7 |
8 #include "base/base_export.h" | 8 #include "base/base_export.h" |
9 #include "base/memory/scoped_ptr.h" | 9 #include "base/memory/scoped_ptr.h" |
10 #include "base/message_loop/message_pump.h" | 10 #include "base/message_loop/message_pump.h" |
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28 // passed to Dispatcher's Dispatch method for dispatch. It is up to the | 28 // passed to Dispatcher's Dispatch method for dispatch. It is up to the |
29 // Dispatcher to dispatch, or not, the event. The platform specific | 29 // Dispatcher to dispatch, or not, the event. The platform specific |
30 // implementation of the class is in message_pump_gtk/message_pump_x. | 30 // implementation of the class is in message_pump_gtk/message_pump_x. |
31 class MessagePumpDispatcher; | 31 class MessagePumpDispatcher; |
32 | 32 |
33 // This class implements a base MessagePump needed for TYPE_UI MessageLoops on | 33 // This class implements a base MessagePump needed for TYPE_UI MessageLoops on |
34 // platforms using GLib. | 34 // platforms using GLib. |
35 class BASE_EXPORT MessagePumpGlib : public MessagePump { | 35 class BASE_EXPORT MessagePumpGlib : public MessagePump { |
36 public: | 36 public: |
37 MessagePumpGlib(); | 37 MessagePumpGlib(); |
| 38 virtual ~MessagePumpGlib(); |
38 | 39 |
39 // Like MessagePump::Run, but events are routed through dispatcher. | 40 // Like MessagePump::Run, but events are routed through dispatcher. |
40 virtual void RunWithDispatcher(Delegate* delegate, | 41 virtual void RunWithDispatcher(Delegate* delegate, |
41 MessagePumpDispatcher* dispatcher); | 42 MessagePumpDispatcher* dispatcher); |
42 | 43 |
43 // Internal methods used for processing the pump callbacks. They are | 44 // Internal methods used for processing the pump callbacks. They are |
44 // public for simplicity but should not be used directly. HandlePrepare | 45 // public for simplicity but should not be used directly. HandlePrepare |
45 // is called during the prepare step of glib, and returns a timeout that | 46 // is called during the prepare step of glib, and returns a timeout that |
46 // will be passed to the poll. HandleCheck is called after the poll | 47 // will be passed to the poll. HandleCheck is called after the poll |
47 // has completed, and returns whether or not HandleDispatch should be called. | 48 // has completed, and returns whether or not HandleDispatch should be called. |
48 // HandleDispatch is called if HandleCheck returned true. | 49 // HandleDispatch is called if HandleCheck returned true. |
49 int HandlePrepare(); | 50 int HandlePrepare(); |
50 bool HandleCheck(); | 51 bool HandleCheck(); |
51 void HandleDispatch(); | 52 void HandleDispatch(); |
52 | 53 |
53 // Adds an Observer, which will start receiving notifications immediately. | 54 // Adds an Observer, which will start receiving notifications immediately. |
54 void AddObserver(MessagePumpObserver* observer); | 55 void AddObserver(MessagePumpObserver* observer); |
55 | 56 |
56 // Removes an Observer. It is safe to call this method while an Observer is | 57 // Removes an Observer. It is safe to call this method while an Observer is |
57 // receiving a notification callback. | 58 // receiving a notification callback. |
58 void RemoveObserver(MessagePumpObserver* observer); | 59 void RemoveObserver(MessagePumpObserver* observer); |
59 | 60 |
60 // Overridden from MessagePump: | 61 // Overridden from MessagePump: |
61 virtual void Run(Delegate* delegate) OVERRIDE; | 62 virtual void Run(Delegate* delegate) OVERRIDE; |
62 virtual void Quit() OVERRIDE; | 63 virtual void Quit() OVERRIDE; |
63 virtual void ScheduleWork() OVERRIDE; | 64 virtual void ScheduleWork() OVERRIDE; |
64 virtual void ScheduleDelayedWork(const TimeTicks& delayed_work_time) OVERRIDE; | 65 virtual void ScheduleDelayedWork(const TimeTicks& delayed_work_time) OVERRIDE; |
65 | 66 |
66 protected: | 67 protected: |
67 virtual ~MessagePumpGlib(); | |
68 | |
69 // Returns the dispatcher for the current run state (|state_->dispatcher|). | 68 // Returns the dispatcher for the current run state (|state_->dispatcher|). |
70 MessagePumpDispatcher* GetDispatcher(); | 69 MessagePumpDispatcher* GetDispatcher(); |
71 | 70 |
72 ObserverList<MessagePumpObserver>& observers() { return observers_; } | 71 ObserverList<MessagePumpObserver>& observers() { return observers_; } |
73 | 72 |
74 private: | 73 private: |
75 // We may make recursive calls to Run, so we save state that needs to be | 74 // We may make recursive calls to Run, so we save state that needs to be |
76 // separate between them in this structure type. | 75 // separate between them in this structure type. |
77 struct RunState; | 76 struct RunState; |
78 | 77 |
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101 | 100 |
102 // List of observers. | 101 // List of observers. |
103 ObserverList<MessagePumpObserver> observers_; | 102 ObserverList<MessagePumpObserver> observers_; |
104 | 103 |
105 DISALLOW_COPY_AND_ASSIGN(MessagePumpGlib); | 104 DISALLOW_COPY_AND_ASSIGN(MessagePumpGlib); |
106 }; | 105 }; |
107 | 106 |
108 } // namespace base | 107 } // namespace base |
109 | 108 |
110 #endif // BASE_MESSAGE_LOOP_MESSAGE_PUMP_GLIB_H_ | 109 #endif // BASE_MESSAGE_LOOP_MESSAGE_PUMP_GLIB_H_ |
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