ui/views/controls/combobox/combobox_listener.h

// Copyright (c) 2012 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 UI_VIEWS_CONTROLS_COMBOBOX_COMBOBOX_LISTENER_H_
#define UI_VIEWS_CONTROLS_COMBOBOX_COMBOBOX_LISTENER_H_

#include "ui/views/views_export.h"

namespace views {

class Combobox;

// Interface used to notify consumers when something interesting happens to a
// Combobox.
class VIEWS_EXPORT ComboboxListener {
 public:
  // Invoked when the user does the appropriate gesture that some action should
  // be performed. For both STYLE_NORMAL and STYLE_ACTION this is invoked if the
  // user clicks on the menu button and then clicks an item. For STYLE_NORMAL
  // this is also invoked when the menu is not showing and the does a gesture to
  // change the selection (for example, presses the home or end keys). This is
  // not invoked when the menu is shown and the user changes the selection
  // without closing the menu.
  virtual void OnPerformAction(Combobox* combobox) = 0;

 protected:
  virtual ~ComboboxListener() {}
};

}  // namespace views

#endif  // UI_VIEWS_CONTROLS_COMBOBOX_COMBOBOX_LISTENER_H_