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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_DRIVE_DIRECTORY_LOADER_H_ | |
| 6 #define CHROME_BROWSER_CHROMEOS_DRIVE_DIRECTORY_LOADER_H_ | |
| 7 | |
| 8 #include <map> | |
| 9 #include <set> | |
| 10 #include <string> | |
| 11 #include <vector> | |
| 12 | |
| 13 #include "base/callback.h" | |
| 14 #include "base/memory/ref_counted.h" | |
| 15 #include "base/memory/scoped_ptr.h" | |
| 16 #include "base/observer_list.h" | |
| 17 #include "base/threading/thread_checker.h" | |
| 18 #include "components/drive/file_errors.h" | |
| 19 #include "components/drive/file_system_interface.h" | |
| 20 #include "google_apis/drive/drive_api_error_codes.h" | |
| 21 #include "google_apis/drive/drive_common_callbacks.h" | |
| 22 | |
| 23 namespace base { | |
| 24 class SequencedTaskRunner; | |
| 25 } // namespace base | |
| 26 | |
| 27 namespace google_apis { | |
| 28 class AboutResource; | |
| 29 } // namespace google_apis | |
| 30 | |
| 31 namespace drive { | |
| 32 | |
| 33 class EventLogger; | |
| 34 class JobScheduler; | |
| 35 class ResourceEntry; | |
| 36 | |
| 37 namespace internal { | |
| 38 | |
| 39 class AboutResourceLoader; | |
| 40 class ChangeList; | |
| 41 class ChangeListLoaderObserver; | |
| 42 class DirectoryFetchInfo; | |
| 43 class LoaderController; | |
| 44 class ResourceMetadata; | |
| 45 | |
| 46 // DirectoryLoader is used to load directory contents. | |
| 47 class DirectoryLoader { | |
| 48 public: | |
| 49 DirectoryLoader(EventLogger* logger, | |
| 50 base::SequencedTaskRunner* blocking_task_runner, | |
| 51 ResourceMetadata* resource_metadata, | |
| 52 JobScheduler* scheduler, | |
| 53 AboutResourceLoader* about_resource_loader, | |
| 54 LoaderController* apply_task_controller); | |
| 55 ~DirectoryLoader(); | |
| 56 | |
| 57 // Adds and removes the observer. | |
| 58 void AddObserver(ChangeListLoaderObserver* observer); | |
| 59 void RemoveObserver(ChangeListLoaderObserver* observer); | |
| 60 | |
| 61 // Reads the directory contents. | |
| 62 // |entries_callback| can be null. | |
| 63 // |completion_callback| must not be null. | |
| 64 void ReadDirectory(const base::FilePath& directory_path, | |
| 65 const ReadDirectoryEntriesCallback& entries_callback, | |
| 66 const FileOperationCallback& completion_callback); | |
| 67 | |
| 68 private: | |
| 69 class FeedFetcher; | |
| 70 struct ReadDirectoryCallbackState; | |
| 71 | |
| 72 // Part of ReadDirectory(). | |
| 73 void ReadDirectoryAfterGetEntry( | |
| 74 const base::FilePath& directory_path, | |
| 75 const ReadDirectoryEntriesCallback& entries_callback, | |
| 76 const FileOperationCallback& completion_callback, | |
| 77 bool should_try_loading_parent, | |
| 78 const ResourceEntry* entry, | |
| 79 FileError error); | |
| 80 void ReadDirectoryAfterLoadParent( | |
| 81 const base::FilePath& directory_path, | |
| 82 const ReadDirectoryEntriesCallback& entries_callback, | |
| 83 const FileOperationCallback& completion_callback, | |
| 84 FileError error); | |
| 85 void ReadDirectoryAfterGetAboutResource( | |
| 86 const std::string& local_id, | |
| 87 google_apis::DriveApiErrorCode status, | |
| 88 scoped_ptr<google_apis::AboutResource> about_resource); | |
| 89 void ReadDirectoryAfterCheckLocalState( | |
| 90 scoped_ptr<google_apis::AboutResource> about_resource, | |
| 91 const std::string& local_id, | |
| 92 const ResourceEntry* entry, | |
| 93 const int64* local_changestamp, | |
| 94 FileError error); | |
| 95 | |
| 96 // Part of ReadDirectory(). | |
| 97 // This function should be called when the directory load is complete. | |
| 98 // Flushes the callbacks waiting for the directory to be loaded. | |
| 99 void OnDirectoryLoadComplete(const std::string& local_id, FileError error); | |
| 100 void OnDirectoryLoadCompleteAfterRead(const std::string& local_id, | |
| 101 const ResourceEntryVector* entries, | |
| 102 FileError error); | |
| 103 | |
| 104 // Sends |entries| to the callbacks. | |
| 105 void SendEntries(const std::string& local_id, | |
| 106 const ResourceEntryVector& entries); | |
| 107 | |
| 108 // ================= Implementation for directory loading ================= | |
| 109 // Loads the directory contents from server, and updates the local metadata. | |
| 110 // Runs |callback| when it is finished. | |
| 111 void LoadDirectoryFromServer(const DirectoryFetchInfo& directory_fetch_info); | |
| 112 | |
| 113 // Part of LoadDirectoryFromServer() for a normal directory. | |
| 114 void LoadDirectoryFromServerAfterLoad( | |
| 115 const DirectoryFetchInfo& directory_fetch_info, | |
| 116 FeedFetcher* fetcher, | |
| 117 FileError error); | |
| 118 | |
| 119 // Part of LoadDirectoryFromServer(). | |
| 120 void LoadDirectoryFromServerAfterUpdateChangestamp( | |
| 121 const DirectoryFetchInfo& directory_fetch_info, | |
| 122 const base::FilePath* directory_path, | |
| 123 FileError error); | |
| 124 | |
| 125 EventLogger* logger_; // Not owned. | |
| 126 scoped_refptr<base::SequencedTaskRunner> blocking_task_runner_; | |
| 127 ResourceMetadata* resource_metadata_; // Not owned. | |
| 128 JobScheduler* scheduler_; // Not owned. | |
| 129 AboutResourceLoader* about_resource_loader_; // Not owned. | |
| 130 LoaderController* loader_controller_; // Not owned. | |
| 131 base::ObserverList<ChangeListLoaderObserver> observers_; | |
| 132 typedef std::map<std::string, std::vector<ReadDirectoryCallbackState> > | |
| 133 LoadCallbackMap; | |
| 134 LoadCallbackMap pending_load_callback_; | |
| 135 | |
| 136 // Set of the running feed fetcher for the fast fetch. | |
| 137 std::set<FeedFetcher*> fast_fetch_feed_fetcher_set_; | |
| 138 | |
| 139 base::ThreadChecker thread_checker_; | |
| 140 | |
| 141 // Note: This should remain the last member so it'll be destroyed and | |
| 142 // invalidate its weak pointers before any other members are destroyed. | |
| 143 base::WeakPtrFactory<DirectoryLoader> weak_ptr_factory_; | |
| 144 DISALLOW_COPY_AND_ASSIGN(DirectoryLoader); | |
| 145 }; | |
| 146 | |
| 147 } // namespace internal | |
| 148 } // namespace drive | |
| 149 | |
| 150 #endif // CHROME_BROWSER_CHROMEOS_DRIVE_DIRECTORY_LOADER_H_ | |
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Chromium Code Reviews
Issue 1314803004:
Move chrome/browser/chromeos/drive/file_system.cc (+deps) into components/drive. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master