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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_BASE_EVENTS_EVENT_HANDLER_H_
#define UI_BASE_EVENTS_EVENT_HANDLER_H_
#include <vector>
#include "ui/base/events/event_constants.h"
#include "ui/base/ui_export.h"
namespace ui {
class GestureEvent;
class KeyEvent;
class MouseEvent;
class ScrollEvent;
class TouchEvent;
class EventTarget;
// Dispatches events to appropriate targets.
class UI_EXPORT EventHandler {
public:
EventHandler() {}
virtual ~EventHandler() {}
virtual EventResult OnKeyEvent(KeyEvent* event) = 0;
virtual EventResult OnMouseEvent(MouseEvent* event) = 0;
virtual EventResult OnScrollEvent(ScrollEvent* event) = 0;
virtual TouchStatus OnTouchEvent(TouchEvent* event) = 0;
virtual EventResult OnGestureEvent(GestureEvent* event) = 0;
};
typedef std::vector<EventHandler*> EventHandlerList;
} // namespace ui
#endif // UI_BASE_EVENTS_EVENT_HANDLER_H_
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