New AppListView Scroll Behavior.

ui/views/controls/textfield/textfield_controller.h

 // Copyright (c) 2012 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_VIEWS_CONTROLS_TEXTFIELD_TEXTFIELD_CONTROLLER_H_
 #define UI_VIEWS_CONTROLS_TEXTFIELD_TEXTFIELD_CONTROLLER_H_
 
 #include <set>
 
 #include "base/strings/string16.h"
@@ skipping 22 matching lines @@
                                const base::string16& new_contents) {}
 
   // Called to get notified about keystrokes in the edit.
   // Returns true if the message was handled and should not be processed
   // further. If it returns false the processing continues.
   virtual bool HandleKeyEvent(Textfield* sender,
                               const ui::KeyEvent& key_event);
 
   // Called to get notified about mouse events in the edit.
   // Returns true if the message was handled and should not be processed
-  // further. Currently, only mouse down events are sent here.
+  // further. Currently, only mouse down events and mouse wheel events are sent
+  // here.
   virtual bool HandleMouseEvent(Textfield* sender,
                                 const ui::MouseEvent& mouse_event);
 
   // Called to get notified about gesture events in the edit.
   // Returns true if the message was handled and should not be processed
   // further. Currently, only tap events are sent here.
   virtual bool HandleGestureEvent(Textfield* sender,
                                   const ui::GestureEvent& gesture_event);
 
   // Called before performing a user action that may change the textfield.
@@ skipping 32 matching lines @@
   // Gives the controller a chance to modify the context menu contents.
   virtual void UpdateContextMenu(ui::SimpleMenuModel* menu_contents) {}
 
  protected:
   virtual ~TextfieldController() {}
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_TEXTFIELD_TEXTFIELD_CONTROLLER_H_