Win: Add listbox view.

views/controls/listbox/native_listbox_wrapper.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_CONTROLS_LISTBOX_NATIVE_LISTBOX_WRAPPER_H_
+#define VIEWS_CONTROLS_LISTBOX_NATIVE_LISTBOX_WRAPPER_H_
+
+#include "gfx/native_widget_types.h"
+#include "gfx/rect.h"
+#include "views/controls/listbox/listbox.h"
+
+namespace views {
+
+// An interface implemented by an object that provides a platform-native
+// listbox.
+class NativeListboxWrapper {
+ public:
+  // Returns the number of rows in the table.
+  virtual int GetRowCount() const = 0;
+
+  // Returns the 0-based index of the currently selected row.
+  virtual int SelectedRow() const = 0;
+
+  // Selects the specified row, making sure it's visible.
+  virtual void SelectRow(int row) = 0;
+
+  // Retrieves the views::View that hosts the native control.
+  virtual View* GetView() = 0;
+
+  // Creates an appropriate NativeListboxWrapper for the platform.
+  static NativeListboxWrapper* CreateNativeWrapper(
+      Listbox* listbox,
+      const std::vector<string16>& strings,
+      Listbox::Listener* listener);
+};
+
+}  // namespace views
+
+#endif  // VIEWS_CONTROLS_LISTBOX_NATIVE_LISTBOX_WRAPPER_H_