Relanding focus manager refactoring

views/widget/widget.h

 // Copyright (c) 2006-2008 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_WIDGET_WIDGET_H_
 #define VIEWS_WIDGET_WIDGET_H_
 
 #include "base/gfx/native_widget_types.h"
 
 class ThemeProvider;
 
 namespace gfx {
 class Path;
 class Rect;
 }
 
 namespace views {
 
 class Accelerator;
+class FocusManager;
 class RootView;
 class TooltipManager;
 class Window;
 
 ////////////////////////////////////////////////////////////////////////////////
 //
 // Widget interface
 //
 //   Widget is an abstract class that defines the API that should be implemented
 //   by a native window in order to host a view hierarchy.
@@ skipping 68 matching lines @@
   // Returns the accelerator given a command id. Returns false if there is
   // no accelerator associated with a given id, which is a common condition.
   virtual bool GetAccelerator(int cmd_id,
                               Accelerator* accelerator) = 0;
 
   // Returns the Window containing this Widget, or NULL if not contained in a
   // window.
   virtual Window* GetWindow() { return NULL; }
   virtual const Window* GetWindow() const { return NULL; }
 
-  // Get the theme provider.
+  // Gets the theme provider.
   virtual ThemeProvider* GetThemeProvider() const { return NULL; }
 
-  // Get the default theme provider; this is necessary for when a widget has
+  // Gets the default theme provider; this is necessary for when a widget has
   // no profile (and ThemeProvider) associated with it. The default theme
   // provider provides a default set of bitmaps that such widgets can use.
   virtual ThemeProvider* GetDefaultThemeProvider() { return NULL; }
+
+  // Returns the FocusManager for this widget.
+  // Note that all widgets in a widget hierarchy share the same focus manager.
+  virtual FocusManager* GetFocusManager() { return NULL; }
 };
 
 }  // namespace views
 
 #endif // VIEWS_WIDGET_WIDGET_H_