wip: Touch Text Selection Prototypes

ui/touch_selection/touch_handle.h

 // Copyright 2014 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 UI_TOUCH_SELECTION_TOUCH_HANDLE_H_
 #define UI_TOUCH_SELECTION_TOUCH_HANDLE_H_
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/time/time.h"
@@ skipping 23 matching lines @@
   virtual void SetAlpha(float alpha) = 0;
   virtual void SetFocus(const gfx::PointF& position) = 0;
   virtual gfx::RectF GetVisibleBounds() const = 0;
 };
 
 // Interface through which |TouchHandle| communicates handle manipulation and
 // requests concrete drawable instances.
 class UI_TOUCH_SELECTION_EXPORT TouchHandleClient {
  public:
   virtual ~TouchHandleClient() {}
-  virtual void OnHandleDragBegin(const TouchHandle& handle) = 0;
+  virtual void OnHandleDragBegin(const TouchHandle& handle,
+                                 base::TimeTicks event_time) = 0;
   virtual void OnHandleDragUpdate(const TouchHandle& handle,
-                                  const gfx::PointF& new_position) = 0;
+                                  const gfx::PointF& new_position,
+                                  base::TimeTicks event_time) = 0;
   virtual void OnHandleDragEnd(const TouchHandle& handle) = 0;
   virtual void OnHandleTapped(const TouchHandle& handle) = 0;
   virtual void SetNeedsAnimate() = 0;
   virtual scoped_ptr<TouchHandleDrawable> CreateDrawable() = 0;
   virtual base::TimeDelta GetTapTimeout() const = 0;
   virtual float GetTapSlop() const = 0;
 };
 
 // Responsible for displaying a selection or insertion handle for text
 // interaction.
@@ skipping 33 matching lines @@
   // Returns true if an animation is active and requires further ticking.
   bool Animate(base::TimeTicks frame_time);
 
   bool is_dragging() const { return is_dragging_; }
   const gfx::PointF& position() const { return position_; }
   TouchHandleOrientation orientation() const { return orientation_; }
 
  private:
   friend class TouchSelectionControllerAuraTest;
 
-  void BeginDrag();
+  void BeginDrag(base::TimeTicks event_time);
   void EndDrag();
   void BeginFade();
   void EndFade();
   void SetAlpha(float alpha);
 
   TouchHandleDrawable* drawable_for_testing() const { return drawable_.get(); }
 
   scoped_ptr<TouchHandleDrawable> drawable_;
 
   TouchHandleClient* const client_;
@@ skipping 18 matching lines @@
   bool is_visible_;
   bool is_dragging_;
   bool is_drag_within_tap_region_;
 
   DISALLOW_COPY_AND_ASSIGN(TouchHandle);
 };
 
 }  // namespace ui
 
 #endif  // UI_TOUCH_SELECTION_TOUCH_HANDLE_H_