chrome/browser/search/instant_service_observer.h

// 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 CHROME_BROWSER_SEARCH_INSTANT_SERVICE_OBSERVER_H_
#define CHROME_BROWSER_SEARCH_INSTANT_SERVICE_OBSERVER_H_

#include <vector>

struct InstantMostVisitedItem;
struct ThemeBackgroundInfo;

// InstantServiceObserver defines the observer interface for InstantService.
class InstantServiceObserver {
 public:
  // Indicates that the user's custom theme has changed in some way.
  virtual void ThemeInfoChanged(const ThemeBackgroundInfo&);

  // Indicates that the most visited items has changed.
  virtual void MostVisitedItemsChanged(
      const std::vector<InstantMostVisitedItem>&);

  // Indicates that the default search provider changed. Parameter indicates
  // whether the Google base URL changed (such as when the user migrates from
  // one google.<TLD> to another TLD).
  virtual void DefaultSearchProviderChanged(
      bool google_base_url_domain_changed);

 protected:
  virtual ~InstantServiceObserver() {}
};

#endif  // CHROME_BROWSER_SEARCH_INSTANT_SERVICE_OBSERVER_H_