chrome/browser/chromeos/drive/file_system/remove_operation.h

   1 // Copyright (c) 2012 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_FILE_SYSTEM_REMOVE_OPERATION_H_
   6 #define CHROME_BROWSER_CHROMEOS_DRIVE_FILE_SYSTEM_REMOVE_OPERATION_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/memory/ref_counted.h"
  10 #include "base/memory/scoped_ptr.h"
  11 #include "base/memory/weak_ptr.h"
  12 #include "chrome/browser/chromeos/drive/file_errors.h"
  13 #include "google_apis/drive/drive_api_error_codes.h"
  14
  15 namespace base {
  16 class FilePath;
  17 class SequencedTaskRunner;
  18 }  // namespace base
  19
  20 namespace drive {
  21
  22 class ResourceEntry;
  23
  24 namespace internal {
  25 class FileCache;
  26 class ResourceMetadata;
  27 }  // namespace internal
  28
  29 namespace file_system {
  30
  31 class OperationDelegate;
  32
  33 // This class encapsulates the drive Remove function.  It is responsible for
  34 // moving the removed entry to the trash.
  35 class RemoveOperation {
  36  public:
  37   RemoveOperation(base::SequencedTaskRunner* blocking_task_runner,
  38                   OperationDelegate* delegate,
  39                   internal::ResourceMetadata* metadata,
  40                   internal::FileCache* cache);
  41   ~RemoveOperation();
  42
  43   // Removes the resource at |path|. If |path| is a directory and |is_recursive|
  44   // is set, it recursively removes all the descendants. If |is_recursive| is
  45   // not set, it succeeds only when the directory is empty.
  46   //
  47   // |callback| must not be null.
  48   void Remove(const base::FilePath& path,
  49               bool is_recursive,
  50               const FileOperationCallback& callback);
  51
  52  private:
  53   // Part of Remove(). Called after UpdateLocalState() completion.
  54   void RemoveAfterUpdateLocalState(const FileOperationCallback& callback,
  55                                    const std::string* local_id,
  56                                    const ResourceEntry* entry,
  57                                    const base::FilePath* changed_directory_path,
  58                                    FileError error);
  59
  60   scoped_refptr<base::SequencedTaskRunner> blocking_task_runner_;
  61   OperationDelegate* delegate_;
  62   internal::ResourceMetadata* metadata_;
  63   internal::FileCache* cache_;
  64
  65   // Note: This should remain the last member so it'll be destroyed and
  66   // invalidate the weak pointers before any other members are destroyed.
  67   base::WeakPtrFactory<RemoveOperation> weak_ptr_factory_;
  68   DISALLOW_COPY_AND_ASSIGN(RemoveOperation);
  69 };
  70
  71 }  // namespace file_system
  72 }  // namespace drive
  73
  74 #endif  // CHROME_BROWSER_CHROMEOS_DRIVE_FILE_SYSTEM_REMOVE_OPERATION_H_