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

ash/autoclick/common/autoclick_controller_common.h

+// Copyright 2013 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 aura {
+class Window;
+}
+
+namespace ash {
+
+// Autoclick controller common code for ash and mus.
+class AutoclickControllerCommon {
+ public:
+  AutoclickControllerCommon();
+  ~AutoclickControllerCommon();
+
+  void HandleMouseEvent(const ui::MouseEvent& event,
+                        aura::Window* target,
+                        views::Widget* widget,
+                        base::TimeDelta delay);
+  void HandleKeyEvent(const ui::KeyEvent& event);
+  void HandleTouchEvent(const ui::TouchEvent& event);
+  void HandleGestureEvent(const ui::GestureEvent& event);
+  void HandleScrollEvent(const ui::ScrollEvent& event);
+
+  void ResetAutoclickTimer(base::Timer* new_timer);

[sadrul, 2016/08/09 15:53:16]

The common code here should create+own+manage the timer.

[riajiang, 2016/08/10 20:18:59]

Done.

+  void StopAutoclickTimer();
+  void UpdateAnchorLocation(const gfx::Point& anchor_location);
+  int GetMouseEventFlags();
+
+ private:
+  int mouse_event_flags_;
+  std::unique_ptr<base::Timer> autoclick_timer_;
+  // 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_;
+

[sadrul, 2016/08/09 15:53:16]

This common code should also own the views::Widget. It should decide when to
create the widget, and ask the delegate (ash::AutoclickControllerImpl, in this
case) to create it. So the delegate interface would look something like:

  class Delegate {
    virtual views::Widget* CreateCursorRing(location) = 0;
    virtual void MoveCursorRingWidget(widget, location) = 0;
    virtual void DoAutoclick(location) = 0;
  };

[riajiang, 2016/08/10 20:18:59]

Done.

+  DISALLOW_COPY_AND_ASSIGN(AutoclickControllerCommon);
+};
+
+}  // namespace ash
+
+#endif  // ASH_AUTOCLICK_COMMON_AUTOCLICK_CONTROLLER_COMMON_H