Use platform slop/timeout values for selection handle tap detection

content/browser/renderer_host/input/touch_selection_controller.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 CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCH_SELECTION_CONTROLLER_H_
 #define CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCH_SELECTION_CONTROLLER_H_
 
 #include "cc/output/viewport_selection_bound.h"
 #include "content/browser/renderer_host/input/selection_event_type.h"
 #include "content/browser/renderer_host/input/touch_handle.h"
@@ skipping 23 matching lines @@
   virtual void SelectBetweenCoordinates(const gfx::PointF& start,
                                         const gfx::PointF& end) = 0;
   virtual void OnSelectionEvent(SelectionEventType event,
                                 const gfx::PointF& position) = 0;
   virtual scoped_ptr<TouchHandleDrawable> CreateDrawable() = 0;
 };
 
 // Controller for manipulating text selection via touch input.
 class CONTENT_EXPORT TouchSelectionController : public TouchHandleClient {
  public:
-  explicit TouchSelectionController(TouchSelectionControllerClient* client);
+  TouchSelectionController(TouchSelectionControllerClient* client,
+                           base::TimeDelta tap_timeout,
+                           float tap_slop);
   virtual ~TouchSelectionController();
 
   // To be called when the selection bounds have changed.
   // Note that such updates will trigger handle updates only if preceded
   // by an appropriate call to allow automatic showing.
   void OnSelectionBoundsChanged(const cc::ViewportSelectionBound& start,
                                 const cc::ViewportSelectionBound& end);
 
   // Allows touch-dragging of the handle.
   // Returns true iff the event was consumed, in which case the caller should
@@ skipping 29 matching lines @@
   enum InputEventType { TAP, LONG_PRESS, INPUT_EVENT_TYPE_NONE };
 
   // TouchHandleClient implementation.
   virtual void OnHandleDragBegin(const TouchHandle& handle) OVERRIDE;
   virtual void OnHandleDragUpdate(const TouchHandle& handle,
                                   const gfx::PointF& new_position) OVERRIDE;
   virtual void OnHandleDragEnd(const TouchHandle& handle) OVERRIDE;
   virtual void OnHandleTapped(const TouchHandle& handle) OVERRIDE;
   virtual void SetNeedsAnimate() OVERRIDE;
   virtual scoped_ptr<TouchHandleDrawable> CreateDrawable() OVERRIDE;
+  virtual base::TimeDelta GetTapTimeout() const OVERRIDE;
+  virtual float GetTapSlop() const OVERRIDE;
 
   void ShowInsertionHandleAutomatically();
   void ShowSelectionHandlesAutomatically();
 
   void OnInsertionChanged();
   void OnSelectionChanged();
 
   void ActivateInsertion();
   void DeactivateInsertion();
   void ActivateSelection();
   void DeactivateSelection();
   void ResetCachedValuesIfInactive();
 
   const gfx::PointF& GetStartPosition() const;
   const gfx::PointF& GetEndPosition() const;
   gfx::Vector2dF GetStartLineOffset() const;
   gfx::Vector2dF GetEndLineOffset() const;
   bool GetStartVisible() const;
   bool GetEndVisible() const;
   TouchHandle::AnimationStyle GetAnimationStyle(bool was_active) const;
 
   TouchSelectionControllerClient* const client_;
+  const base::TimeDelta tap_timeout_;
+  const float tap_slop_;
 
   InputEventType response_pending_input_event_;
 
   cc::ViewportSelectionBound start_;
   cc::ViewportSelectionBound end_;
   TouchHandleOrientation start_orientation_;
   TouchHandleOrientation end_orientation_;
 
   scoped_ptr<TouchHandle> insertion_handle_;
   bool is_insertion_active_;
   bool activate_insertion_automatically_;
 
   scoped_ptr<TouchHandle> start_selection_handle_;
   scoped_ptr<TouchHandle> end_selection_handle_;
   gfx::PointF fixed_handle_position_;
   bool is_selection_active_;
   bool activate_selection_automatically_;
 
   bool selection_empty_;
   bool selection_editable_;
 
   bool temporarily_hidden_;
 
   DISALLOW_COPY_AND_ASSIGN(TouchSelectionController);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_INPUT_TOUCH_SELECTION_CONTROLLER_H_