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1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2013 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 UI_BASE_OZONE_EVENT_CONVERTER_OZONE_H_ | 5 #ifndef UI_BASE_OZONE_EVENT_CONVERTER_OZONE_H_ |
6 #define UI_BASE_OZONE_EVENT_CONVERTER_OZONE_H_ | 6 #define UI_BASE_OZONE_EVENT_CONVERTER_OZONE_H_ |
7 | 7 |
8 #include "base/memory/scoped_ptr.h" | 8 #include "base/memory/scoped_ptr.h" |
9 #include "base/message_loop/message_pump_libevent.h" | 9 #include "base/message_pump_libevent.h" |
10 | 10 |
11 namespace ui { | 11 namespace ui { |
12 class Event; | 12 class Event; |
13 | 13 |
14 // In ozone, Chrome reads events from file descriptors created from Linux device | 14 // In ozone, Chrome reads events from file descriptors created from Linux device |
15 // drivers. The |MessagePumpLibevent::Watcher| parent class provides the | 15 // drivers. The |MessagePumpLibevent::Watcher| parent class provides the |
16 // functionality to watch a file descriptor for the arrival of new data and | 16 // functionality to watch a file descriptor for the arrival of new data and |
17 // notify its subclasses. Device-specific event converters turn bytes read from | 17 // notify its subclasses. Device-specific event converters turn bytes read from |
18 // the file descriptor into |ui::Event| instances. This class provides the | 18 // the file descriptor into |ui::Event| instances. This class provides the |
19 // functionality needed in common across all converters: dispatching the | 19 // functionality needed in common across all converters: dispatching the |
20 // |ui::Event| to aura. | 20 // |ui::Event| to aura. |
21 class EventConverterOzone : public base::MessagePumpLibevent::Watcher { | 21 class EventConverterOzone : public base::MessagePumpLibevent::Watcher { |
22 public: | 22 public: |
23 EventConverterOzone(); | 23 EventConverterOzone(); |
24 virtual ~EventConverterOzone(); | 24 virtual ~EventConverterOzone(); |
25 | 25 |
26 protected: | 26 protected: |
27 // Subclasses should use this method to post a task that will dispatch | 27 // Subclasses should use this method to post a task that will dispatch |
28 // |event| from the UI message loop. This method takes ownership of | 28 // |event| from the UI message loop. This method takes ownership of |
29 // |event|. |event| will be deleted at the end of the posted task. | 29 // |event|. |event| will be deleted at the end of the posted task. |
30 void DispatchEvent(scoped_ptr<ui::Event> event); | 30 void DispatchEvent(scoped_ptr<ui::Event> event); |
31 | 31 |
32 private: | 32 private: |
33 DISALLOW_COPY_AND_ASSIGN(EventConverterOzone); | 33 DISALLOW_COPY_AND_ASSIGN(EventConverterOzone); |
34 }; | 34 }; |
35 | 35 |
36 } // namespace ui | 36 } // namespace ui |
37 | 37 |
38 #endif // UI_BASE_OZONE_EVENT_CONVERTER_OZONE_H_ | 38 #endif // UI_BASE_OZONE_EVENT_CONVERTER_OZONE_H_ |
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