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| 1 // Copyright 2015 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_ANDROID_POPULAR_SITES_H_ | |
| 6 #define CHROME_BROWSER_ANDROID_POPULAR_SITES_H_ | |
| 7 | |
| 8 #include <vector> | |
| 9 | |
| 10 #include "base/callback.h" | |
| 11 #include "base/files/file_path.h" | |
| 12 #include "base/macros.h" | |
| 13 #include "base/memory/scoped_ptr.h" | |
| 14 #include "base/memory/weak_ptr.h" | |
| 15 #include "base/strings/string16.h" | |
| 16 #include "url/gurl.h" | |
| 17 | |
| 18 namespace net { | |
| 19 class URLRequestContextGetter; | |
| 20 } | |
| 21 | |
| 22 namespace user_prefs { | |
| 23 class PrefRegistrySyncable; | |
| 24 } | |
| 25 | |
| 26 class FileDownloader; | |
| 27 class Profile; | |
| 28 | |
| 29 // Downloads and provides a list of suggested popular sites, for display on | |
| 30 // the NTP when there are not enough personalized suggestions. Caches the | |
| 31 // downloaded file on disk to avoid re-downloading on every startup. | |
| 32 class PopularSites { | |
| 33 public: | |
| 34 struct Site { | |
| 35 Site(const base::string16& title, | |
| 36 const GURL& url, | |
| 37 const GURL& favicon_url, | |
| 38 const GURL& large_icon_url, | |
| 39 const GURL& thumbnail_url); | |
| 40 ~Site(); | |
| 41 | |
| 42 base::string16 title; | |
| 43 GURL url; | |
| 44 GURL favicon_url; | |
| 45 GURL large_icon_url; | |
| 46 GURL thumbnail_url; | |
| 47 }; | |
| 48 | |
| 49 using FinishedCallback = base::Callback<void(bool /* success */)>; | |
| 50 | |
| 51 // Usually, the name of the file that's downloaded is based on the user's | |
| 52 // locale. |override_country| (if non-empty) is used to override the | |
| 53 // auto-detected country. |override_version|, if non-empty, will | |
| 54 // override the baked-in default version. | |
| 55 // Set |force_download| to enforce re-downloading the suggestions file, even | |
| 56 // if it already exists on disk. | |
| 57 PopularSites(Profile* profile, | |
| 58 const std::string& override_country, | |
| 59 const std::string& override_version, | |
| 60 bool force_download, | |
| 61 const FinishedCallback& callback); | |
| 62 | |
| 63 // This fetches the popular sites from a given url and is only used for | |
| 64 // debugging through the popular-sites-internals page. | |
| 65 PopularSites(Profile* profile, | |
| 66 const GURL& url, | |
| 67 const FinishedCallback& callback); | |
| 68 | |
| 69 ~PopularSites(); | |
| 70 | |
| 71 const std::vector<Site>& sites() const { return sites_; } | |
| 72 | |
| 73 const base::FilePath& local_path() const { return popular_sites_local_path_; } | |
| 74 | |
| 75 // Register preferences used by this class. | |
| 76 static void RegisterProfilePrefs( | |
| 77 user_prefs::PrefRegistrySyncable* user_prefs); | |
| 78 | |
| 79 private: | |
| 80 PopularSites(Profile* profile, | |
| 81 const GURL& url, | |
| 82 bool force_download, | |
| 83 const FinishedCallback& callback); | |
| 84 | |
| 85 // Fetch the popular sites at the given URL. |force_download| should be true | |
| 86 // if any previously downloaded site list should be overwritten. | |
| 87 void FetchPopularSites(const GURL& url, | |
| 88 bool force_download, | |
| 89 bool is_fallback); | |
| 90 | |
| 91 // If the download was not successful and it was not a fallback, attempt to | |
| 92 // download the fallback suggestions. | |
| 93 void OnDownloadDone(bool success, bool is_fallback); | |
| 94 | |
| 95 void ParseSiteList(const base::FilePath& path); | |
| 96 void OnJsonParsed(scoped_ptr<std::vector<Site>> sites); | |
| 97 | |
| 98 FinishedCallback callback_; | |
| 99 scoped_ptr<FileDownloader> downloader_; | |
| 100 std::vector<Site> sites_; | |
| 101 | |
| 102 base::FilePath popular_sites_local_path_; | |
| 103 | |
| 104 Profile* profile_; | |
| 105 | |
| 106 base::WeakPtrFactory<PopularSites> weak_ptr_factory_; | |
| 107 | |
| 108 DISALLOW_COPY_AND_ASSIGN(PopularSites); | |
| 109 }; | |
| 110 | |
| 111 #endif // CHROME_BROWSER_ANDROID_POPULAR_SITES_H_ | |
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