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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 UI_EVENTS_EVENT_HANDLER_H_ | 5 #ifndef UI_EVENTS_EVENT_HANDLER_H_ |
| 6 #define UI_EVENTS_EVENT_HANDLER_H_ | 6 #define UI_EVENTS_EVENT_HANDLER_H_ |
| 7 | 7 |
| 8 #include <stack> | 8 #include <stack> |
| 9 #include <vector> | 9 #include <vector> |
| 10 | 10 |
| 11 #include "base/basictypes.h" | 11 #include "base/basictypes.h" |
| 12 #include "ui/base/ui_export.h" | |
| 13 #include "ui/events/event_constants.h" | 12 #include "ui/events/event_constants.h" |
| 13 #include "ui/events/events_export.h" |
| 14 | 14 |
| 15 namespace ui { | 15 namespace ui { |
| 16 | 16 |
| 17 class CancelModeEvent; | 17 class CancelModeEvent; |
| 18 class Event; | 18 class Event; |
| 19 class EventDispatcher; | 19 class EventDispatcher; |
| 20 class EventTarget; | 20 class EventTarget; |
| 21 class GestureEvent; | 21 class GestureEvent; |
| 22 class KeyEvent; | 22 class KeyEvent; |
| 23 class MouseEvent; | 23 class MouseEvent; |
| 24 class ScrollEvent; | 24 class ScrollEvent; |
| 25 class TouchEvent; | 25 class TouchEvent; |
| 26 | 26 |
| 27 // Dispatches events to appropriate targets. The default implementations of | 27 // Dispatches events to appropriate targets. The default implementations of |
| 28 // all of the specific handlers (e.g. OnKeyEvent, OnMouseEvent) do nothing. | 28 // all of the specific handlers (e.g. OnKeyEvent, OnMouseEvent) do nothing. |
| 29 class UI_EXPORT EventHandler { | 29 class EVENTS_EXPORT EventHandler { |
| 30 public: | 30 public: |
| 31 EventHandler(); | 31 EventHandler(); |
| 32 virtual ~EventHandler(); | 32 virtual ~EventHandler(); |
| 33 | 33 |
| 34 // This is called for all events. The default implementation routes the event | 34 // This is called for all events. The default implementation routes the event |
| 35 // to one of the event-specific callbacks (OnKeyEvent, OnMouseEvent etc.). If | 35 // to one of the event-specific callbacks (OnKeyEvent, OnMouseEvent etc.). If |
| 36 // this is overridden, then normally, the override should chain into the | 36 // this is overridden, then normally, the override should chain into the |
| 37 // default implementation for un-handled events. | 37 // default implementation for un-handled events. |
| 38 virtual void OnEvent(Event* event); | 38 virtual void OnEvent(Event* event); |
| 39 | 39 |
| (...skipping 17 matching lines...) Expand all Loading... |
| 57 std::stack<EventDispatcher*> dispatchers_; | 57 std::stack<EventDispatcher*> dispatchers_; |
| 58 | 58 |
| 59 DISALLOW_COPY_AND_ASSIGN(EventHandler); | 59 DISALLOW_COPY_AND_ASSIGN(EventHandler); |
| 60 }; | 60 }; |
| 61 | 61 |
| 62 typedef std::vector<EventHandler*> EventHandlerList; | 62 typedef std::vector<EventHandler*> EventHandlerList; |
| 63 | 63 |
| 64 } // namespace ui | 64 } // namespace ui |
| 65 | 65 |
| 66 #endif // UI_EVENTS_EVENT_HANDLER_H_ | 66 #endif // UI_EVENTS_EVENT_HANDLER_H_ |
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