ash: Refactor autoclick common code to ash/autoclick/common.

ash/autoclick/common/autoclick_controller_common.h

+// Copyright 2016 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 ASH_AUTOCLICK_COMMON_AUTOCLICK_CONTROLLER_COMMON_H
+#define ASH_AUTOCLICK_COMMON_AUTOCLICK_CONTROLLER_COMMON_H
+
+#include "ash/autoclick/common/autoclick_ring_handler.h"
+#include "base/macros.h"
+#include "base/timer/timer.h"
+#include "ui/gfx/geometry/point.h"
+
+namespace views {
+class Widget;
+}
+
+namespace ui {
+class MouseEvent;
+class KeyEvent;
+class TouchEvent;
+class GestureEvent;
+class ScrollEvent;
+}
+
+namespace ash {
+class AutoclickControllerCommonDelegate;
+
+// Autoclick is one of the accessibility features. If enabled, two circles will
+// animate at the mouse event location and an automatic click event will happen
+// after a certain amout of time at that location.
+// AutoclickControllerCommon is the common code for both ash and mus to handle
+// events and to manage autoclick time delay, timer and ring widget.
+class AutoclickControllerCommon {
+ public:
+  AutoclickControllerCommon(base::TimeDelta delay,
+                            AutoclickControllerCommonDelegate* delegate);
+  ~AutoclickControllerCommon();
+
+  void HandleMouseEvent(const ui::MouseEvent& event);
+  void HandleKeyEvent(const ui::KeyEvent& event);
+
+  void SetAutoclickDelay(const base::TimeDelta delay);
+  void CancelAutoclick();
+
+ private:
+  void InitClickTimer();
+
+  void DoAutoclick();
+
+  void UpdateRingWidget(const gfx::Point& mouse_location);
+
+  base::TimeDelta delay_;
+  int mouse_event_flags_;
+  std::unique_ptr<base::Timer> autoclick_timer_;
+  AutoclickControllerCommonDelegate* delegate_;
+  std::unique_ptr<views::Widget> widget_;
+  // The position in screen coordinates used to determine
+  // the distance the mouse has moved.
+  gfx::Point anchor_location_;
+  std::unique_ptr<AutoclickRingHandler> autoclick_ring_handler_;
+
+  DISALLOW_COPY_AND_ASSIGN(AutoclickControllerCommon);
+};
+
+}  // namespace ash
+
+#endif  // ASH_AUTOCLICK_COMMON_AUTOCLICK_CONTROLLER_COMMON_H