components/drive/file_system/create_directory_operation.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 COMPONENTS_DRIVE_FILE_SYSTEM_CREATE_DIRECTORY_OPERATION_H_
   6 #define COMPONENTS_DRIVE_FILE_SYSTEM_CREATE_DIRECTORY_OPERATION_H_
   7
   8 #include <set>
   9
  10 #include "base/basictypes.h"
  11 #include "base/memory/ref_counted.h"
  12 #include "base/memory/weak_ptr.h"
  13 #include "base/threading/thread_checker.h"
  14 #include "components/drive/file_errors.h"
  15
  16 namespace base {
  17 class FilePath;
  18 class SequencedTaskRunner;
  19 }  // namespace base
  20
  21 namespace drive {
  22
  23 class FileChange;
  24 class ResourceEntry;
  25
  26 namespace internal {
  27 class ResourceMetadata;
  28 }  // namespace internal
  29
  30 namespace file_system {
  31
  32 class OperationDelegate;
  33
  34 // This class encapsulates the drive Create Directory function.  It is
  35 // responsible for sending the request to the drive API, then updating the
  36 // local state and metadata to reflect the new state.
  37 class CreateDirectoryOperation {
  38  public:
  39   CreateDirectoryOperation(base::SequencedTaskRunner* blocking_task_runner,
  40                            OperationDelegate* delegate,
  41                            internal::ResourceMetadata* metadata);
  42   ~CreateDirectoryOperation();
  43
  44   // Creates a new directory at |directory_path|.
  45   // If |is_exclusive| is true, an error is raised in case a directory exists
  46   // already at the |directory_path|.
  47   // If |is_recursive| is true, the invocation creates parent directories as
  48   // needed just like mkdir -p does.
  49   // Invokes |callback| when finished with the result of the operation.
  50   // |callback| must not be null.
  51   void CreateDirectory(const base::FilePath& directory_path,
  52                        bool is_exclusive,
  53                        bool is_recursive,
  54                        const FileOperationCallback& callback);
  55
  56  private:
  57   // Part of CreateDirectory(). Called after UpdateLocalState().
  58   void CreateDirectoryAfterUpdateLocalState(
  59       const FileOperationCallback& callback,
  60       const std::set<std::string>* updated_local_ids,
  61       const FileChange* changed_directories,
  62       FileError error);
  63
  64   scoped_refptr<base::SequencedTaskRunner> blocking_task_runner_;
  65   OperationDelegate* delegate_;
  66   internal::ResourceMetadata* metadata_;
  67
  68   base::ThreadChecker thread_checker_;
  69
  70   // Note: This should remain the last member so it'll be destroyed and
  71   // invalidate the weak pointers before any other members are destroyed.
  72   base::WeakPtrFactory<CreateDirectoryOperation> weak_ptr_factory_;
  73   DISALLOW_COPY_AND_ASSIGN(CreateDirectoryOperation);
  74 };
  75
  76 }  // namespace file_system
  77 }  // namespace drive
  78
  79 #endif  // COMPONENTS_DRIVE_FILE_SYSTEM_CREATE_DIRECTORY_OPERATION_H_