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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_FILE_SYSTEM_PROVIDER_PROVIDED_FILE_SYSTEM_H_
      6 #define CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_PROVIDED_FILE_SYSTEM_H_
      7 
      8 #include "base/memory/weak_ptr.h"
      9 #include "chrome/browser/chromeos/file_system_provider/provided_file_system_info.h"
     10 #include "chrome/browser/chromeos/file_system_provider/provided_file_system_interface.h"
     11 #include "chrome/browser/chromeos/file_system_provider/request_manager.h"
     12 #include "storage/browser/fileapi/async_file_util.h"
     13 
     14 class Profile;
     15 
     16 namespace net {
     17 class IOBuffer;
     18 }  // namespace net
     19 
     20 namespace base {
     21 class FilePath;
     22 }  // namespace base
     23 
     24 namespace extensions {
     25 class EventRouter;
     26 }  // namespace extensions
     27 
     28 namespace chromeos {
     29 namespace file_system_provider {
     30 
     31 class NotificationManagerInterface;
     32 
     33 // Provided file system implementation. Forwards requests between providers and
     34 // clients.
     35 class ProvidedFileSystem : public ProvidedFileSystemInterface {
     36  public:
     37   ProvidedFileSystem(Profile* profile,
     38                      const ProvidedFileSystemInfo& file_system_info);
     39   virtual ~ProvidedFileSystem();
     40 
     41   // ProvidedFileSystemInterface overrides.
     42   virtual AbortCallback RequestUnmount(
     43       const storage::AsyncFileUtil::StatusCallback& callback) OVERRIDE;
     44   virtual AbortCallback GetMetadata(
     45       const base::FilePath& entry_path,
     46       MetadataFieldMask fields,
     47       const GetMetadataCallback& callback) OVERRIDE;
     48   virtual AbortCallback ReadDirectory(
     49       const base::FilePath& directory_path,
     50       const storage::AsyncFileUtil::ReadDirectoryCallback& callback) OVERRIDE;
     51   virtual AbortCallback OpenFile(const base::FilePath& file_path,
     52                                  OpenFileMode mode,
     53                                  const OpenFileCallback& callback) OVERRIDE;
     54   virtual AbortCallback CloseFile(
     55       int file_handle,
     56       const storage::AsyncFileUtil::StatusCallback& callback) OVERRIDE;
     57   virtual AbortCallback ReadFile(
     58       int file_handle,
     59       net::IOBuffer* buffer,
     60       int64 offset,
     61       int length,
     62       const ReadChunkReceivedCallback& callback) OVERRIDE;
     63   virtual AbortCallback CreateDirectory(
     64       const base::FilePath& directory_path,
     65       bool recursive,
     66       const storage::AsyncFileUtil::StatusCallback& callback) OVERRIDE;
     67   virtual AbortCallback DeleteEntry(
     68       const base::FilePath& entry_path,
     69       bool recursive,
     70       const storage::AsyncFileUtil::StatusCallback& callback) OVERRIDE;
     71   virtual AbortCallback CreateFile(
     72       const base::FilePath& file_path,
     73       const storage::AsyncFileUtil::StatusCallback& callback) OVERRIDE;
     74   virtual AbortCallback CopyEntry(
     75       const base::FilePath& source_path,
     76       const base::FilePath& target_path,
     77       const storage::AsyncFileUtil::StatusCallback& callback) OVERRIDE;
     78   virtual AbortCallback MoveEntry(
     79       const base::FilePath& source_path,
     80       const base::FilePath& target_path,
     81       const storage::AsyncFileUtil::StatusCallback& callback) OVERRIDE;
     82   virtual AbortCallback Truncate(
     83       const base::FilePath& file_path,
     84       int64 length,
     85       const storage::AsyncFileUtil::StatusCallback& callback) OVERRIDE;
     86   virtual AbortCallback WriteFile(
     87       int file_handle,
     88       net::IOBuffer* buffer,
     89       int64 offset,
     90       int length,
     91       const storage::AsyncFileUtil::StatusCallback& callback) OVERRIDE;
     92   virtual const ProvidedFileSystemInfo& GetFileSystemInfo() const OVERRIDE;
     93   virtual RequestManager* GetRequestManager() OVERRIDE;
     94   virtual base::WeakPtr<ProvidedFileSystemInterface> GetWeakPtr() OVERRIDE;
     95 
     96  private:
     97   // Aborts an operation executed with a request id equal to
     98   // |operation_request_id|. The request is removed immediately on the C++ side
     99   // despite being handled by the providing extension or not.
    100   void Abort(int operation_request_id,
    101              const storage::AsyncFileUtil::StatusCallback& callback);
    102 
    103   Profile* profile_;                       // Not owned.
    104   extensions::EventRouter* event_router_;  // Not owned. May be NULL.
    105   ProvidedFileSystemInfo file_system_info_;
    106   scoped_ptr<NotificationManagerInterface> notification_manager_;
    107   RequestManager request_manager_;
    108 
    109   base::WeakPtrFactory<ProvidedFileSystem> weak_ptr_factory_;
    110   DISALLOW_COPY_AND_ASSIGN(ProvidedFileSystem);
    111 };
    112 
    113 }  // namespace file_system_provider
    114 }  // namespace chromeos
    115 
    116 #endif  // CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_PROVIDED_FILE_SYSTEM_H_
    117