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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 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 SERVICES_UI_PUBLIC_CPP_INPUT_EVENT_HANDLER_H_ | 5 #ifndef SERVICES_UI_PUBLIC_CPP_INPUT_EVENT_HANDLER_H_ |
6 #define SERVICES_UI_PUBLIC_CPP_INPUT_EVENT_HANDLER_H_ | 6 #define SERVICES_UI_PUBLIC_CPP_INPUT_EVENT_HANDLER_H_ |
7 | 7 |
8 #include <memory> | 8 #include <memory> |
9 | 9 |
10 #include "base/callback_forward.h" | 10 #include "base/callback_forward.h" |
| 11 #include "services/ui/public/cpp/ui_export.h" |
11 | 12 |
12 namespace ui { | 13 namespace ui { |
13 class Event; | 14 class Event; |
14 } | 15 } |
15 | 16 |
16 namespace ui { | 17 namespace ui { |
17 | 18 |
18 class Window; | 19 class Window; |
19 | 20 |
20 namespace mojom { | 21 namespace mojom { |
21 enum class EventResult; | 22 enum class EventResult; |
22 } | 23 } |
23 | 24 |
24 // Responsible for processing input events for ui::Window. | 25 // Responsible for processing input events for ui::Window. |
25 class InputEventHandler { | 26 class UI_EXPORT InputEventHandler { |
26 public: | 27 public: |
27 // The event handler can asynchronously ack the event by taking ownership of | 28 // The event handler can asynchronously ack the event by taking ownership of |
28 // the |ack_callback|. The callback takes an EventResult indicating if the | 29 // the |ack_callback|. The callback takes an EventResult indicating if the |
29 // handler has consumed the event. If the handler does not take ownership of | 30 // handler has consumed the event. If the handler does not take ownership of |
30 // the callback, then WindowTreeClient will ack the event as not consumed. | 31 // the callback, then WindowTreeClient will ack the event as not consumed. |
31 virtual void OnWindowInputEvent( | 32 virtual void OnWindowInputEvent( |
32 Window* target, | 33 Window* target, |
33 const ui::Event& event, | 34 const ui::Event& event, |
34 std::unique_ptr<base::Callback<void(mojom::EventResult)>>* | 35 std::unique_ptr<base::Callback<void(mojom::EventResult)>>* |
35 ack_callback) = 0; | 36 ack_callback) = 0; |
36 | 37 |
37 protected: | 38 protected: |
38 virtual ~InputEventHandler() {} | 39 virtual ~InputEventHandler() {} |
39 }; | 40 }; |
40 | 41 |
41 } // namespace ui | 42 } // namespace ui |
42 | 43 |
43 #endif // SERVICES_UI_PUBLIC_CPP_INPUT_EVENT_HANDLER_H_ | 44 #endif // SERVICES_UI_PUBLIC_CPP_INPUT_EVENT_HANDLER_H_ |
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