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

ash/autoclick/common/autoclick_controller_common.h

Index: ash/autoclick/common/autoclick_controller_common.h
diff --git a/ash/autoclick/common/autoclick_controller_common.h b/ash/autoclick/common/autoclick_controller_common.h
new file mode 100644
index 0000000000000000000000000000000000000000..099239326d4386f23ba1dffb670e7fe418ce790d
--- /dev/null
+++ b/ash/autoclick/common/autoclick_controller_common.h
@@ -0,0 +1,90 @@
+// Copyright 2013 The Chromium Authors. All rights reserved.

[sadrul, 2016/08/12 15:00:35]

2016

[riajiang, 2016/08/12 16:31:39]

Done.

+// 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/events/keycodes/keyboard_codes.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 {
+
+// Autoclick controller common code for ash and mus.
+class AutoclickControllerCommon {
+ public:
+  class Delegate {
+   public:
+    Delegate() {}
+    virtual ~Delegate() {}
+
+    // Called when given |event_location| to create a ring widget at that
+    // location.

[sadrul, 2016/08/12 15:00:35]

* Creates a ring widget at |event_location|.

[riajiang, 2016/08/12 16:31:38]

Done.

+    virtual views::Widget* CreateAutoclickRingWidget(
+        const gfx::Point& event_location) = 0;

[sadrul, 2016/08/12 15:00:36]

Document the ownership of the returned Widget (e.g. does the delegate retain
ownership, or does this AutoclickControllerCommon takes ownership of the created
widget?

From reading the code, it looks like AutoclickControllerCommon is the one that
takes ownership. In that case, return a std::unique_ptr<Widget> from here to
make that obvious.

[riajiang, 2016/08/12 16:31:39]

Done.

+
+    // Called when the |event_location| is changed to update the parent of
+    // the |widget| if necessary.

[sadrul, 2016/08/12 15:00:35]

* Moves |widget| to |event_location|

[riajiang, 2016/08/12 16:31:38]

Done.

+    virtual void UpdateAutoclickRingWidget(
+        views::Widget* widget,
+        const gfx::Point& event_location) = 0;
+
+    virtual void DoAutoclick(const gfx::Point& event_location,

[sadrul, 2016/08/12 15:00:36]

Generates a click with |mouse_event_flags| at |event_location|.

[riajiang, 2016/08/12 16:31:38]

Done.

+                             const int mouse_event_flags) = 0;
+
+   private:
+    DISALLOW_COPY_AND_ASSIGN(Delegate);
+  };
+
+  AutoclickControllerCommon(base::TimeDelta delay, Delegate* delegate);
+  ~AutoclickControllerCommon();
+
+  void HandleMouseEvent(const ui::MouseEvent& event);
+  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 SetAutoclickDelay(const base::TimeDelta delay);
+  void StopAutoclickTimer();
+  void StopGesture();
+  bool IsModifierKey(const ui::KeyboardCode key_code);
+
+ private:
+  void InitClickTimer();
+
+  void DoAutoclick();
+
+  void GetAutoclickRingWidget(const gfx::Point& mouse_location);

[sadrul, 2016/08/12 15:00:35]

Call this UpdateRingWidget(). (Get* implies the function is going to return
something)

[riajiang, 2016/08/12 16:31:38]

Done.

+
+  base::TimeDelta delay_;
+  int mouse_event_flags_;
+  std::unique_ptr<base::Timer> autoclick_timer_;
+  Delegate* delegate_;
+  views::Widget* widget_;

[sadrul, 2016/08/12 15:00:35]

Make this a std::unique_ptr<> if this owns the widget.

[riajiang, 2016/08/12 16:31:39]

Done.

+  // 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