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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef CHROME_BROWSER_DOWNLOAD_DOWNLOAD_TARGET_DETERMINER_H_ | 5 #ifndef CHROME_BROWSER_DOWNLOAD_DOWNLOAD_TARGET_DETERMINER_H_ |
| 6 #define CHROME_BROWSER_DOWNLOAD_DOWNLOAD_TARGET_DETERMINER_H_ | 6 #define CHROME_BROWSER_DOWNLOAD_DOWNLOAD_TARGET_DETERMINER_H_ |
| 7 | 7 |
| 8 #include "base/files/file_path.h" | 8 #include "base/files/file_path.h" |
| 9 #include "base/memory/ref_counted.h" | 9 #include "base/memory/ref_counted.h" |
| 10 #include "base/memory/scoped_ptr.h" | 10 #include "base/memory/scoped_ptr.h" |
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| 48 // The only public entrypoint is the static Start() method which creates an | 48 // The only public entrypoint is the static Start() method which creates an |
| 49 // instance of DownloadTargetDeterminer. | 49 // instance of DownloadTargetDeterminer. |
| 50 class DownloadTargetDeterminer | 50 class DownloadTargetDeterminer |
| 51 : public content::DownloadItem::Observer { | 51 : public content::DownloadItem::Observer { |
| 52 public: | 52 public: |
| 53 // Start the process of determing the target of |download|. | 53 // Start the process of determing the target of |download|. |
| 54 // | 54 // |
| 55 // |download_prefs| is required and must outlive |download|. It is used for | 55 // |download_prefs| is required and must outlive |download|. It is used for |
| 56 // determining the user's preferences regarding the default downloads | 56 // determining the user's preferences regarding the default downloads |
| 57 // directory, prompting and auto-open behavior. | 57 // directory, prompting and auto-open behavior. |
| 58 // |last_selected_directory| is the most recent directory that was chosen by | |
| 59 // the user. If the user needs to be prompted, then this directory will be | |
| 60 // used as the directory for the download instead of the user's default | |
| 61 // downloads directory. | |
| 62 // |delegate| is required and must live until |callback| is invoked. | 58 // |delegate| is required and must live until |callback| is invoked. |
| 63 // |callback| will be scheduled asynchronously on the UI thread after download | 59 // |callback| will be scheduled asynchronously on the UI thread after download |
| 64 // determination is complete or after |download| is destroyed. | 60 // determination is complete or after |download| is destroyed. |
| 65 // | 61 // |
| 66 // Start() should be called on the UI thread. | 62 // Start() should be called on the UI thread. |
| 67 static void Start(content::DownloadItem* download, | 63 static void Start(content::DownloadItem* download, |
| 68 DownloadPrefs* download_prefs, | 64 DownloadPrefs* download_prefs, |
| 69 const base::FilePath& last_selected_directory, | |
| 70 DownloadTargetDeterminerDelegate* delegate, | 65 DownloadTargetDeterminerDelegate* delegate, |
| 71 const content::DownloadTargetCallback& callback); | 66 const content::DownloadTargetCallback& callback); |
| 72 | 67 |
| 73 // Returns a .crdownload intermediate path for the |suggested_path|. | 68 // Returns a .crdownload intermediate path for the |suggested_path|. |
| 74 static base::FilePath GetCrDownloadPath(const base::FilePath& suggested_path); | 69 static base::FilePath GetCrDownloadPath(const base::FilePath& suggested_path); |
| 75 | 70 |
| 76 private: | 71 private: |
| 77 // The main workflow is controlled via a set of state transitions. Each state | 72 // The main workflow is controlled via a set of state transitions. Each state |
| 78 // has an associated handler. The handler for STATE_FOO is DoFoo. Each handler | 73 // has an associated handler. The handler for STATE_FOO is DoFoo. Each handler |
| 79 // performs work, determines the next state to transition to and returns a | 74 // performs work, determines the next state to transition to and returns a |
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| 113 enum PriorVisitsToReferrer { | 108 enum PriorVisitsToReferrer { |
| 114 NO_VISITS_TO_REFERRER, | 109 NO_VISITS_TO_REFERRER, |
| 115 VISITED_REFERRER, | 110 VISITED_REFERRER, |
| 116 }; | 111 }; |
| 117 | 112 |
| 118 // Construct a DownloadTargetDeterminer object. Constraints on the arguments | 113 // Construct a DownloadTargetDeterminer object. Constraints on the arguments |
| 119 // are as per Start() above. | 114 // are as per Start() above. |
| 120 DownloadTargetDeterminer( | 115 DownloadTargetDeterminer( |
| 121 content::DownloadItem* download, | 116 content::DownloadItem* download, |
| 122 DownloadPrefs* download_prefs, | 117 DownloadPrefs* download_prefs, |
| 123 const base::FilePath& last_selected_directory, | |
| 124 DownloadTargetDeterminerDelegate* delegate, | 118 DownloadTargetDeterminerDelegate* delegate, |
| 125 const content::DownloadTargetCallback& callback); | 119 const content::DownloadTargetCallback& callback); |
| 126 | 120 |
| 127 virtual ~DownloadTargetDeterminer(); | 121 virtual ~DownloadTargetDeterminer(); |
| 128 | 122 |
| 129 // Invoke each successive handler until a handler returns QUIT_DOLOOP or | 123 // Invoke each successive handler until a handler returns QUIT_DOLOOP or |
| 130 // COMPLETE. Note that as a result, this object might be deleted. So |this| | 124 // COMPLETE. Note that as a result, this object might be deleted. So |this| |
| 131 // should not be accessed after calling DoLoop(). | 125 // should not be accessed after calling DoLoop(). |
| 132 void DoLoop(); | 126 void DoLoop(); |
| 133 | 127 |
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| 237 bool create_directory_; | 231 bool create_directory_; |
| 238 DownloadPathReservationTracker::FilenameConflictAction conflict_action_; | 232 DownloadPathReservationTracker::FilenameConflictAction conflict_action_; |
| 239 content::DownloadDangerType danger_type_; | 233 content::DownloadDangerType danger_type_; |
| 240 base::FilePath virtual_path_; | 234 base::FilePath virtual_path_; |
| 241 base::FilePath local_path_; | 235 base::FilePath local_path_; |
| 242 base::FilePath intermediate_path_; | 236 base::FilePath intermediate_path_; |
| 243 | 237 |
| 244 content::DownloadItem* download_; | 238 content::DownloadItem* download_; |
| 245 DownloadPrefs* download_prefs_; | 239 DownloadPrefs* download_prefs_; |
| 246 DownloadTargetDeterminerDelegate* delegate_; | 240 DownloadTargetDeterminerDelegate* delegate_; |
| 247 base::FilePath last_selected_directory_; | |
| 248 content::DownloadTargetCallback completion_callback_; | 241 content::DownloadTargetCallback completion_callback_; |
| 249 CancelableRequestConsumer history_consumer_; | 242 CancelableRequestConsumer history_consumer_; |
| 250 | 243 |
| 251 base::WeakPtrFactory<DownloadTargetDeterminer> weak_ptr_factory_; | 244 base::WeakPtrFactory<DownloadTargetDeterminer> weak_ptr_factory_; |
| 252 | 245 |
| 253 DISALLOW_COPY_AND_ASSIGN(DownloadTargetDeterminer); | 246 DISALLOW_COPY_AND_ASSIGN(DownloadTargetDeterminer); |
| 254 }; | 247 }; |
| 255 | 248 |
| 256 #endif // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_TARGET_DETERMINER_H_ | 249 #endif // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_TARGET_DETERMINER_H_ |
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