1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef CHROME_BROWSER_UI_SEARCH_SEARCH_MODEL_OBSERVER_H_
6#define CHROME_BROWSER_UI_SEARCH_SEARCH_MODEL_OBSERVER_H_
7
8#include "chrome/browser/ui/search/search_model.h"
9
10// This class defines the observer interface for the |SearchModel|.
11class SearchModelObserver {
12 public:
13  // Informs the observer that the model's state has changed.
14  virtual void ModelChanged(const SearchModel::State& old_state,
15                            const SearchModel::State& new_state) = 0;
16
17 protected:
18  virtual ~SearchModelObserver() {}
19};
20
21#endif  // CHROME_BROWSER_UI_SEARCH_SEARCH_MODEL_OBSERVER_H_
22