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| 1 // Copyright 2014 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_CHROMEOS_CUSTOMIZATION_WALLPAPER_DOWNLOADER_H_ |
| 6 #define CHROME_BROWSER_CHROMEOS_CUSTOMIZATION_WALLPAPER_DOWNLOADER_H_ |
| 7 |
| 8 #include <string> |
| 9 |
| 10 #include "base/bind.h" |
| 11 #include "base/files/file_path.h" |
| 12 #include "base/macros.h" |
| 13 #include "base/memory/weak_ptr.h" |
| 14 #include "base/time/time.h" |
| 15 #include "base/timer/timer.h" |
| 16 #include "chrome/browser/chromeos/customization_document.h" |
| 17 #include "net/url_request/url_fetcher.h" |
| 18 #include "url/gurl.h" |
| 19 |
| 20 namespace chromeos { |
| 21 |
| 22 // Download customized wallpaper. |
| 23 // ServicesCustomizationDocument::OnCustomizedWallpaperDownloaded() is called on |
| 24 // success. |
| 25 class CustomizationWallpaperDownloader : public net::URLFetcherDelegate { |
| 26 public: |
| 27 // - |url_context_getter| - Context to initialize net::URLFetcher. |
| 28 // - |wallpaper_url| - wallpaper URL to download. |
| 29 // - |wallpaper_dir| - directory, where wallpaper will be downloaded |
| 30 // (it will be created). |
| 31 // - |wallpaper_downloaded_file| - full path to local file to store downloaded |
| 32 // wallpaper file. File is downloaded to temporary location |
| 33 // |wallpaper_downloaded_file| + ".tmp", so directory must be writable. |
| 34 // After download is completed, temporary file will be renamed to |
| 35 // |wallpaper_downloaded_file|. |
| 36 CustomizationWallpaperDownloader( |
| 37 net::URLRequestContextGetter* url_context_getter, |
| 38 const GURL& wallpaper_url, |
| 39 const base::FilePath& wallpaper_dir, |
| 40 const base::FilePath& wallpaper_downloaded_file, |
| 41 base::Callback<void(bool success, const GURL&)> |
| 42 on_wallpaper_fetch_completed); |
| 43 |
| 44 virtual ~CustomizationWallpaperDownloader(); |
| 45 |
| 46 // Start download. |
| 47 void Start(); |
| 48 |
| 49 // net::URLFetcherDelegate |
| 50 virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE; |
| 51 |
| 52 private: |
| 53 // Start new request. |
| 54 void StartRequest(); |
| 55 |
| 56 // Schedules retry. |
| 57 void Retry(); |
| 58 |
| 59 // Called on UI thread. |
| 60 void OnWallpaperDirectoryCreated(scoped_ptr<bool> success); |
| 61 |
| 62 // Called on UI thread. |
| 63 void OnTemporaryFileRenamed(scoped_ptr<bool> success); |
| 64 |
| 65 // This is used to initialize net::URLFetcher object. |
| 66 scoped_refptr<net::URLRequestContextGetter> url_context_getter_; |
| 67 |
| 68 // This fetcher is used to download wallpaper file. |
| 69 scoped_ptr<net::URLFetcher> url_fetcher_; |
| 70 |
| 71 // The wallpaper URL to fetch. |
| 72 const GURL wallpaper_url_; |
| 73 |
| 74 // Wallpaper directory (to be created). |
| 75 const base::FilePath wallpaper_dir_; |
| 76 |
| 77 // Full path to local file to save downloaded wallpaper. |
| 78 const base::FilePath wallpaper_downloaded_file_; |
| 79 |
| 80 // Full path to temporary file to fetch downloaded wallpper. |
| 81 const base::FilePath wallpaper_temporary_file_; |
| 82 |
| 83 // Pending retry. |
| 84 base::OneShotTimer<CustomizationWallpaperDownloader> request_scheduled_; |
| 85 |
| 86 // Number of download retries (first attempt is not counted as retry). |
| 87 size_t retries_; |
| 88 |
| 89 // Callback supplied by caller. |
| 90 base::Callback<void(bool success, const GURL&)> on_wallpaper_fetch_completed_; |
| 91 |
| 92 base::WeakPtrFactory<CustomizationWallpaperDownloader> weak_factory_; |
| 93 |
| 94 DISALLOW_COPY_AND_ASSIGN(CustomizationWallpaperDownloader); |
| 95 }; |
| 96 |
| 97 } // namespace chromeos |
| 98 |
| 99 #endif // CHROME_BROWSER_CHROMEOS_CUSTOMIZATION_WALLPAPER_DOWNLOADER_H_ |
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