File: combobox_model_observer.h

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// Copyright 2013 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_BASE_MODELS_COMBOBOX_MODEL_OBSERVER_H_
#define UI_BASE_MODELS_COMBOBOX_MODEL_OBSERVER_H_

#include "ui/base/ui_base_export.h"

namespace ui {

class ComboboxModel;

// Observer for the ComboboxModel.
class UI_BASE_EXPORT ComboboxModelObserver {
 public:
  // Invoked when |model| has changed in some way. The observer should assume
  // everything changed.
  virtual void OnComboboxModelChanged(ComboboxModel* model) = 0;

 protected:
  virtual ~ComboboxModelObserver() {}
};

}  // namespace ui

#endif  // UI_BASE_MODELS_COMBOBOX_MODEL_OBSERVER_H_