| // Copyright 2016 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 COMPONENTS_NTP_TILES_POPULAR_SITES_IMPL_H_ |
| #define COMPONENTS_NTP_TILES_POPULAR_SITES_IMPL_H_ |
| |
| #include <map> |
| #include <memory> |
| #include <string> |
| #include <vector> |
| |
| #include "base/callback.h" |
| #include "base/macros.h" |
| #include "base/memory/weak_ptr.h" |
| #include "base/strings/string16.h" |
| #include "components/ntp_tiles/popular_sites.h" |
| #include "services/data_decoder/public/cpp/data_decoder.h" |
| #include "url/gurl.h" |
| |
| namespace network { |
| class SimpleURLLoader; |
| class SharedURLLoaderFactory; |
| } |
| |
| namespace user_prefs { |
| class PrefRegistrySyncable; |
| } |
| |
| namespace variations { |
| class VariationsService; |
| } |
| |
| class PrefService; |
| class TemplateURLService; |
| |
| namespace ntp_tiles { |
| |
| // Actual (non-test) implementation of the PopularSites interface. Caches the |
| // downloaded file on disk to avoid re-downloading on every startup. |
| class PopularSitesImpl : public PopularSites { |
| public: |
| PopularSitesImpl( |
| PrefService* prefs, |
| const TemplateURLService* template_url_service, |
| variations::VariationsService* variations_service, |
| scoped_refptr<network::SharedURLLoaderFactory> url_loader_factory); |
| |
| ~PopularSitesImpl() override; |
| |
| // PopularSites implementation. |
| bool MaybeStartFetch(bool force_download, |
| const FinishedCallback& callback) override; |
| const std::map<SectionType, SitesVector>& sections() const override; |
| GURL GetLastURLFetched() const override; |
| GURL GetURLToFetch() override; |
| std::string GetDirectoryToFetch() override; |
| std::string GetCountryToFetch() override; |
| std::string GetVersionToFetch() override; |
| const base::ListValue* GetCachedJson() override; |
| |
| // Register preferences used by this class. |
| static void RegisterProfilePrefs( |
| user_prefs::PrefRegistrySyncable* user_prefs); |
| |
| private: |
| // Fetch the popular sites at the given URL, overwriting any cache in prefs |
| // that already exists. |
| void FetchPopularSites(); |
| |
| // Called once SimpleURLLoader completes the network request. |
| void OnSimpleLoaderComplete(std::unique_ptr<std::string> response_body); |
| |
| void OnJsonParsed(data_decoder::DataDecoder::ValueOrError result); |
| void OnDownloadFailed(); |
| |
| // Parameters set from constructor. |
| PrefService* const prefs_; |
| const TemplateURLService* const template_url_service_; |
| variations::VariationsService* const variations_; |
| scoped_refptr<network::SharedURLLoaderFactory> url_loader_factory_; |
| |
| // Set by MaybeStartFetch() and called after fetch completes. |
| FinishedCallback callback_; |
| |
| std::unique_ptr<network::SimpleURLLoader> simple_url_loader_; |
| bool is_fallback_; |
| std::map<SectionType, SitesVector> sections_; |
| GURL pending_url_; |
| int version_in_pending_url_; |
| |
| base::WeakPtrFactory<PopularSitesImpl> weak_ptr_factory_{this}; |
| |
| DISALLOW_COPY_AND_ASSIGN(PopularSitesImpl); |
| }; |
| |
| } // namespace ntp_tiles |
| |
| #endif // COMPONENTS_NTP_TILES_POPULAR_SITES_IMPL_H_ |