chrome/browser/media_galleries/fileapi/media_file_system_backend.h

   1 // Copyright (c) 2013 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_MEDIA_GALLERIES_FILEAPI_MEDIA_FILE_SYSTEM_BACKEND_H_
   6 #define CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_MEDIA_FILE_SYSTEM_BACKEND_H_
   7
   8 #include <string>
   9
  10 #include "base/callback.h"
  11 #include "base/files/file_path.h"
  12 #include "base/memory/ref_counted.h"
  13 #include "base/memory/scoped_ptr.h"
  14 #include "chrome/browser/media_galleries/media_galleries_preferences.h"
  15 #include "storage/browser/fileapi/file_system_backend.h"
  16 #include "storage/browser/fileapi/task_runner_bound_observer_list.h"
  17
  18 namespace base {
  19 class SequencedTaskRunner;
  20 }
  21
  22 namespace storage {
  23 class FileSystemURL;
  24 }
  25
  26 namespace net {
  27 class URLRequest;
  28 }
  29
  30 class MediaPathFilter;
  31 class DeviceMediaAsyncFileUtil;
  32
  33 class MediaFileSystemBackend : public storage::FileSystemBackend {
  34  public:
  35   static const char kMediaTaskRunnerName[];
  36
  37   MediaFileSystemBackend(
  38       const base::FilePath& profile_path,
  39       base::SequencedTaskRunner* media_task_runner);
  40   virtual ~MediaFileSystemBackend();
  41
  42   static bool CurrentlyOnMediaTaskRunnerThread();
  43   static scoped_refptr<base::SequencedTaskRunner> MediaTaskRunner();
  44
  45   // Construct the mount point for the gallery specified by |pref_id| in
  46   // the profile located in |profile_path|.
  47   static std::string ConstructMountName(const base::FilePath& profile_path,
  48                                         const std::string& extension_id,
  49                                         MediaGalleryPrefId pref_id);
  50
  51   static bool AttemptAutoMountForURLRequest(
  52       const net::URLRequest* url_request,
  53       const storage::FileSystemURL& filesystem_url,
  54       const std::string& storage_domain,
  55       const base::Callback<void(base::File::Error result)>& callback);
  56
  57   // FileSystemBackend implementation.
  58   virtual bool CanHandleType(storage::FileSystemType type) const override;
  59   virtual void Initialize(storage::FileSystemContext* context) override;
  60   virtual void ResolveURL(const storage::FileSystemURL& url,
  61                           storage::OpenFileSystemMode mode,
  62                           const OpenFileSystemCallback& callback) override;
  63   virtual storage::AsyncFileUtil* GetAsyncFileUtil(
  64       storage::FileSystemType type) override;
  65   virtual storage::WatcherManager* GetWatcherManager(
  66       storage::FileSystemType type) override;
  67   virtual storage::CopyOrMoveFileValidatorFactory*
  68       GetCopyOrMoveFileValidatorFactory(storage::FileSystemType type,
  69                                         base::File::Error* error_code) override;
  70   virtual storage::FileSystemOperation* CreateFileSystemOperation(
  71       const storage::FileSystemURL& url,
  72       storage::FileSystemContext* context,
  73       base::File::Error* error_code) const override;
  74   virtual bool SupportsStreaming(
  75       const storage::FileSystemURL& url) const override;
  76   virtual bool HasInplaceCopyImplementation(
  77       storage::FileSystemType type) const override;
  78   virtual scoped_ptr<storage::FileStreamReader> CreateFileStreamReader(
  79       const storage::FileSystemURL& url,
  80       int64 offset,
  81       int64 max_bytes_to_read,
  82       const base::Time& expected_modification_time,
  83       storage::FileSystemContext* context) const override;
  84   virtual scoped_ptr<storage::FileStreamWriter> CreateFileStreamWriter(
  85       const storage::FileSystemURL& url,
  86       int64 offset,
  87       storage::FileSystemContext* context) const override;
  88   virtual storage::FileSystemQuotaUtil* GetQuotaUtil() override;
  89   virtual const storage::UpdateObserverList* GetUpdateObservers(
  90       storage::FileSystemType type) const override;
  91   virtual const storage::ChangeObserverList* GetChangeObservers(
  92       storage::FileSystemType type) const override;
  93   virtual const storage::AccessObserverList* GetAccessObservers(
  94       storage::FileSystemType type) const override;
  95
  96  private:
  97   // Store the profile path. We need this to create temporary snapshot files.
  98   const base::FilePath profile_path_;
  99
 100   scoped_refptr<base::SequencedTaskRunner> media_task_runner_;
 101
 102   scoped_ptr<MediaPathFilter> media_path_filter_;
 103   scoped_ptr<storage::CopyOrMoveFileValidatorFactory>
 104       media_copy_or_move_file_validator_factory_;
 105
 106   scoped_ptr<storage::AsyncFileUtil> native_media_file_util_;
 107   scoped_ptr<DeviceMediaAsyncFileUtil> device_media_async_file_util_;
 108 #if defined(OS_WIN) || defined(OS_MACOSX)
 109   scoped_ptr<storage::AsyncFileUtil> picasa_file_util_;
 110   scoped_ptr<storage::AsyncFileUtil> itunes_file_util_;
 111 #endif  // defined(OS_WIN) || defined(OS_MACOSX)
 112 #if defined(OS_MACOSX)
 113   scoped_ptr<storage::AsyncFileUtil> iphoto_file_util_;
 114 #endif  // defined(OS_MACOSX)
 115
 116   DISALLOW_COPY_AND_ASSIGN(MediaFileSystemBackend);
 117 };
 118
 119 #endif  // CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_MEDIA_FILE_SYSTEM_BACKEND_H_