drive: Support offline move/rename

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

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_CHROMEOS_DRIVE_FILE_SYSTEM_MOVE_OPERATION_H_
 #define CHROME_BROWSER_CHROMEOS_DRIVE_FILE_SYSTEM_MOVE_OPERATION_H_
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/chromeos/drive/file_errors.h"
 #include "chrome/browser/google_apis/gdata_errorcode.h"
 
 namespace base {
 class FilePath;
 class SequencedTaskRunner;
 }  // namespace base
 
 namespace google_apis {
 class ResourceEntry;
 }  // namespace google_apis
 
 namespace drive {
 
-class JobScheduler;
 class ResourceEntry;
 
 namespace internal {
 class ResourceMetadata;
 }  // namespace internal
 
 namespace file_system {
 
 class OperationObserver;
 
 // This class encapsulates the drive Move function.  It is responsible for
-// sending the request to the drive API, then updating the local state and
-// metadata to reflect the new state.
+// updating the local metadata entry.
 class MoveOperation {
  public:
   MoveOperation(base::SequencedTaskRunner* blocking_task_runner,
                 OperationObserver* observer,
-                JobScheduler* scheduler,
                 internal::ResourceMetadata* metadata);
   ~MoveOperation();
 
   // Performs the move operation on the file at drive path |src_file_path|
   // with a target of |dest_file_path|.
   // If |preserve_last_modified| is set to true, this tries to preserve
   // last modified time stamp.
   // Invokes |callback| when finished with the result of the operation.
   // |callback| must not be null.
   void Move(const base::FilePath& src_file_path,
             const base::FilePath& dest_file_path,
             bool preserve_last_modified,
             const FileOperationCallback& callback);
 
  private:
-  // Params of Move().
-  struct MoveParams;
-
-  // Part of Move(). Called after local metadata look up.
-  void MoveAfterPrepare(const MoveParams& params,
-                        scoped_ptr<ResourceEntry> src_entry,
-                        scoped_ptr<ResourceEntry> src_parent_entry,
-                        scoped_ptr<ResourceEntry> dest_parent_entry,
-                        FileError error);
-
-  // Part of Move(). Called after UpdateResource is completed.
-  void MoveAfterUpdateResource(
-      const MoveParams& params,
-      google_apis::GDataErrorCode status,
-      scoped_ptr<google_apis::ResourceEntry> resource_entry);
-
-  // Part of Move(). Called after ResourceMetadata::RefreshEntry is completed.
-  void MoveAfterRefreshEntry(const MoveParams& params, FileError error);
+  // Part of Move(). Called after updating the local state.
+  void MoveAfterUpdateLocalState(const base::FilePath& src_file_path,
+                                 const base::FilePath& dest_file_path,
+                                 const FileOperationCallback& callback,
+                                 const std::string* local_id,
+                                 FileError error);
 
   scoped_refptr<base::SequencedTaskRunner> blocking_task_runner_;
   OperationObserver* observer_;
-  JobScheduler* scheduler_;
   internal::ResourceMetadata* metadata_;
 
   // Note: This should remain the last member so it'll be destroyed and
   // invalidate the weak pointers before any other members are destroyed.
   base::WeakPtrFactory<MoveOperation> weak_ptr_factory_;
   DISALLOW_COPY_AND_ASSIGN(MoveOperation);
 };
 
 }  // namespace file_system
 }  // namespace drive
 
 #endif  // CHROME_BROWSER_CHROMEOS_DRIVE_FILE_SYSTEM_MOVE_OPERATION_H_