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|. 11 class 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: ~SearchModelObserver()18 virtual ~SearchModelObserver() {} 19 }; 20 21 #endif // CHROME_BROWSER_UI_SEARCH_SEARCH_MODEL_OBSERVER_H_ 22