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
3 // found in the LICENSE file.
5 #ifndef ASH_WM_GESTURES_TRAY_GESTURE_HANDLER_H_
6 #define ASH_WM_GESTURES_TRAY_GESTURE_HANDLER_H_
8 #include "base/basictypes.h"
9 #include "base/compiler_specific.h"
10 #include "ui/views/widget/widget_observer.h"
18 // Handles gesture events on the shelf to show the system tray bubble.
19 class TrayGestureHandler
: public views::WidgetObserver
{
22 virtual ~TrayGestureHandler();
24 // Handles a gesture-update event and updates the dragging state of the tray
25 // bubble. Returns true if the handler can continue to process gesture events
26 // for the bubble. Returns false if it should no longer receive gesture
28 bool UpdateGestureDrag(const ui::GestureEvent
& event
);
30 void CompleteGestureDrag(const ui::GestureEvent
& event
);
33 virtual void OnWidgetDestroying(views::Widget
* widget
) OVERRIDE
;
35 // The widget for the tray-bubble.
36 views::Widget
* widget_
;
38 // The amount that has been dragged.
39 float gesture_drag_amount_
;
41 DISALLOW_COPY_AND_ASSIGN(TrayGestureHandler
);
46 #endif // ASH_WM_GESTURES_TRAY_GESTURE_HANDLER_H_