Added entry points to view/View to dispatch and process TouchEvents.

views/view.h

 // Copyright (c) 2010 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 VIEWS_VIEW_H_
 #define VIEWS_VIEW_H_
 #pragma once
 
 #include "build/build_config.h"
 
@@ skipping 687 matching lines @@
   // This method is invoked when the mouse enters this control.
   //
   // Default implementation does nothing. Override as needed.
   virtual void OnMouseEntered(const MouseEvent& event);
 
   // This method is invoked when the mouse exits this control
   // The provided event location is always (0, 0)
   // Default implementation does nothing. Override as needed.
   virtual void OnMouseExited(const MouseEvent& event);
 
+#if defined(TOUCH_UI)
+  // This method is invoked for each touch event. Default implementation
+  // does nothing. Override as needed.
+  virtual bool OnTouchEvent(const TouchEvent& event);
+#endif
+
   // Set the MouseHandler for a drag session.
   //
   // A drag session is a stream of mouse events starting
   // with a MousePressed event, followed by several MouseDragged
   // events and finishing with a MouseReleased event.
   //
   // This method should be only invoked while processing a
-  // MouseDragged or MouseReleased event.
+  // MouseDragged or MousePressed event.
   //
   // All further mouse dragged and mouse up events will be sent
   // the MouseHandler, even if it is reparented to another window.
   //
   // The MouseHandler is automatically cleared when the control
   // comes back from processing the MouseReleased event.
   //
   // Note: if the mouse handler is no longer connected to a
   // view hierarchy, events won't be sent.
   //
@@ skipping 427 matching lines @@
   // Used to propagate locale changed notifications from the root view to all
   // views in the hierarchy.
   virtual void PropagateLocaleChanged();
 
   // RootView invokes these. These in turn invoke the appropriate OnMouseXXX
   // method. If a drag is detected, DoDrag is invoked.
   bool ProcessMousePressed(const MouseEvent& e, DragInfo* drop_info);
   bool ProcessMouseDragged(const MouseEvent& e, DragInfo* drop_info);
   void ProcessMouseReleased(const MouseEvent& e, bool canceled);
 
+#if defined(TOUCH_UI)
+  // RootView will invoke this with incoming TouchEvents. Returns the
+  // the result of OnTouchEvent: true if the event was handled by the
+  // callee.
+  bool ProcessTouchEvent(const TouchEvent& e);
+#endif
+
   // Starts a drag and drop operation originating from this view. This invokes
   // WriteDragData to write the data and GetDragOperations to determine the
   // supported drag operations. When done, OnDragDone is invoked.
   void DoDrag(const MouseEvent& e, const gfx::Point& press_pt);
 
   // Removes |view| from the hierarchy tree.  If |update_focus_cycle| is true,
   // the next and previous focusable views of views pointing to this view are
   // updated.  If |update_tool_tip| is true, the tooltip is updated.  If
   // |delete_removed_view| is true, the view is also deleted (if it is parent
   // owned).
@@ skipping 155 matching lines @@
   // The default value for how long to wait (in ms) before showing a menu
   // button on hover. This value is used if the OS doesn't supply one.
   static const int kShowFolderDropMenuDelay;
 
   DISALLOW_COPY_AND_ASSIGN(View);
 };
 
 }  // namespace views
 
 #endif  // VIEWS_VIEW_H_