views: Add OnEnabledChanged() method to View class.

views/controls/native_control_win.cc

-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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.
 
 #include "views/controls/native_control_win.h"
 
 #include <windowsx.h>
 
 #include "base/logging.h"
 #include "ui/base/accessibility/accessibility_types.h"
 #include "ui/base/l10n/l10n_util_win.h"
@@ skipping 39 matching lines @@
       *result = GetControlColor(message, reinterpret_cast<HDC>(w_param),
                                 native_view());
       return true;
   }
   return false;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // NativeControlWin, View overrides:
 
-void NativeControlWin::SetEnabled(bool enabled) {
-  if (IsEnabled() != enabled) {
-    View::SetEnabled(enabled);
-    if (native_view())
-      EnableWindow(native_view(), IsEnabled());
-  }
+void NativeControlWin::OnEnabledChanged() {
+  View::OnEnabledChanged();
+  if (native_view())
+    EnableWindow(native_view(), IsEnabled());
 }
 
 void NativeControlWin::ViewHierarchyChanged(bool is_add, View* parent,
                                             View* child) {
   // Call the base class to hide the view if we're being removed.
   NativeViewHost::ViewHierarchyChanged(is_add, parent, child);
 
   // Create the HWND when we're added to a valid Widget. Many controls need a
   // parent HWND to function properly.
   if (is_add && GetWidget() && !native_view())
@@ skipping 141 matching lines @@
   } else if (message == WM_DESTROY) {
     native_control->props_.reset();
     ui::SetWindowProc(window, native_control->original_wndproc_);
   }
 
   return CallWindowProc(native_control->original_wndproc_, window, message,
                         w_param, l_param);
 }
 
 }  // namespace views