ash/wm/gestures/shelf_gesture_handler.h

   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.
   4
   5 #ifndef ASH_WM_GESTURES_SHELF_GESTURE_HANDLER_H_
   6 #define ASH_WM_GESTURES_SHELF_GESTURE_HANDLER_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/memory/scoped_ptr.h"
  10
  11 namespace aura {
  12 class Window;
  13 }  // namespace aura
  14
  15 namespace ui {
  16 class GestureEvent;
  17 }  // namespace ui
  18
  19 namespace ash {
  20
  21 // This manages gestures on the shelf (e.g. launcher, status tray) that affects
  22 // the shelf visibility.
  23 class ShelfGestureHandler {
  24  public:
  25   ShelfGestureHandler();
  26   virtual ~ShelfGestureHandler();
  27
  28   // Processes a gesture event and updates the status of the shelf when
  29   // appropriate. Returns true of the gesture has been handled and it should not
  30   // be processed any farther, false otherwise.
  31   // The caller must provide the |event_target_window| because the caller has
  32   // knowledge of the type of the |event.target()| whether it's a |views::View|
  33   // or an |aura::Window|.
  34   bool ProcessGestureEvent(const ui::GestureEvent& event,
  35                            const aura::Window* event_target_window);
  36
  37  private:
  38   bool drag_in_progress_;
  39
  40   DISALLOW_COPY_AND_ASSIGN(ShelfGestureHandler);
  41 };
  42
  43 }  // namespace ash
  44
  45 #endif  // ASH_WM_GESTURES_SHELF_GESTURE_HANDLER_H_