components/search/search_provider_observer.h

   1 // Copyright 2019 The Chromium Authors
   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 COMPONENTS_SEARCH_SEARCH_PROVIDER_OBSERVER_H_
   6 #define COMPONENTS_SEARCH_SEARCH_PROVIDER_OBSERVER_H_
   7
   8 #include "base/memory/raw_ptr.h"
   9 #include "base/scoped_observation.h"
  10 #include "components/search_engines/template_url_service.h"
  11 #include "components/search_engines/template_url_service_observer.h"
  12
  13 // Keeps track of any changes in search engine provider and call
  14 // the provided callback if a third-party search provider (i.e. a third-party
  15 // NTP) is being used.
  16 class SearchProviderObserver : public TemplateURLServiceObserver {
  17  public:
  18   explicit SearchProviderObserver(TemplateURLService* service,
  19                                   base::RepeatingClosure callback);
  20   ~SearchProviderObserver() override;
  21
  22   virtual bool is_google();
  23
  24  private:
  25   // TemplateURLServiceObserver:
  26   void OnTemplateURLServiceChanged() override;
  27   void OnTemplateURLServiceShuttingDown() override;
  28
  29   base::ScopedObservation<TemplateURLService, TemplateURLServiceObserver>
  30       service_observation_{this};
  31   // May be nullptr in tests.
  32   raw_ptr<TemplateURLService> service_;
  33   bool is_google_;
  34   base::RepeatingClosure callback_;
  35 };
  36
  37 #endif  // COMPONENTS_SEARCH_SEARCH_PROVIDER_OBSERVER_H_