Make Combobox portable

views/controls/combobox/native_combobox_wrapper.h

Index: views/controls/combobox/native_combobox_wrapper.h
===================================================================
--- views/controls/combobox/native_combobox_wrapper.h	(revision 0)
+++ views/controls/combobox/native_combobox_wrapper.h	(revision 0)
@@ -0,0 +1,48 @@
+// Copyright (c) 2009 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_CONTROLS_COMBOBOX_NATIVE_COMBOBOX_WRAPPER_H_
+#define VIEWS_CONTROLS_COMBOBOX_NATIVE_COMBOBOX_WRAPPER_H_
+
+namespace gfx{
+class Size;
+}
+
+namespace views {
+
+class Combobox;
+class View;
+
+class NativeComboboxWrapper {
+ public:
+  // Updates the combobox's content from its model.
+  virtual void UpdateFromModel() = 0;
+
+  // Updates the displayed selected item from the associated Combobox.
+  virtual void UpdateSelectedItem() = 0;
+
+  // Updates the enabled state of the combobox from the associated view.
+  virtual void UpdateEnabled() = 0;
+
+  // Gets the selected index.
+  virtual int GetSelectedItem() const = 0;
+
+  // Returns true if the Combobox dropdown is open.
+  virtual bool IsDropdownOpen() const = 0;
+
+  // Returns the preferred size of the combobox.
+  virtual gfx::Size GetPreferredSize() const = 0;
+  
+  // Retrieves the views::View that hosts the native control.
+  virtual View* GetView() = 0;
+
+  // Sets the focus to the button.
+  virtual void SetFocus() = 0;
+
+  static NativeComboboxWrapper* CreateWrapper(Combobox* combobox);
+};
+
+}  // namespace views
+
+#endif  // VIEWS_CONTROLS_COMBOBOX_NATIVE_COMBOBOX_WRAPPER_H_