Extract CopyOrMoveFile operation into classes.

webkit/browser/fileapi/copy_or_move_operation_delegate.h

 // Copyright (c) 2013 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 WEBKIT_BROWSER_FILEAPI_COPY_OR_MOVE_OPERATION_DELEGATE_H_
 #define WEBKIT_BROWSER_FILEAPI_COPY_OR_MOVE_OPERATION_DELEGATE_H_
 
 #include <stack>
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "webkit/browser/fileapi/recursive_operation_delegate.h"
 
 namespace webkit_blob {
 class ShareableFileReference;
 }
 
 namespace fileapi {
 
 class CopyOrMoveFileValidator;
 
 // A delegate class for recursive copy or move operations.
 class CopyOrMoveOperationDelegate
     : public RecursiveOperationDelegate {
  public:
+  class CopyOrMoveImpl;
+
   enum OperationType {
     OPERATION_COPY,
     OPERATION_MOVE
   };
 
   CopyOrMoveOperationDelegate(
       FileSystemContext* file_system_context,
       const FileSystemURL& src_root,
       const FileSystemURL& dest_root,
       OperationType operation_type,
       const StatusCallback& callback);
   virtual ~CopyOrMoveOperationDelegate();
 
   // RecursiveOperationDelegate overrides:
   virtual void Run() OVERRIDE;
   virtual void RunRecursively() OVERRIDE;
   virtual void ProcessFile(const FileSystemURL& url,
                            const StatusCallback& callback) OVERRIDE;
   virtual void ProcessDirectory(const FileSystemURL& url,
                                 const StatusCallback& callback) OVERRIDE;
 
  private:
-  struct URLPair {
-    URLPair(const FileSystemURL& src, const FileSystemURL& dest)
-        : src(src),
-          dest(dest) {
-    }
-    FileSystemURL src;
-    FileSystemURL dest;
-  };
-
   void DidTryCopyOrMoveFile(base::PlatformFileError error);
   void DidTryRemoveDestRoot(base::PlatformFileError error);
-  void CopyOrMoveFile(
-      const URLPair& url_pair,
-      const StatusCallback& callback);
-  void DidCreateSnapshot(
-      const URLPair& url_pair,
-      const StatusCallback& callback,
-      base::PlatformFileError error,
-      const base::PlatformFileInfo& file_info,
-      const base::FilePath& platform_path,
-      const scoped_refptr<webkit_blob::ShareableFileReference>& file_ref);
-  void DidValidateFile(
-      const FileSystemURL& dest,
-      const StatusCallback& callback,
-      const base::PlatformFileInfo& file_info,
-      const base::FilePath& platform_path,
-      base::PlatformFileError error);
-  void DidFinishRecursiveCopyDir(
-      const FileSystemURL& src,
-      const StatusCallback& callback,
-      base::PlatformFileError error);
-  void DidFinishCopy(
-      const URLPair& url_pair,
-      const StatusCallback& callback,
-      base::PlatformFileError error);
-  void DoPostWriteValidation(
-      const URLPair& url_pair,
-      const StatusCallback& callback,
-      base::PlatformFileError error,
-      const base::PlatformFileInfo& file_info,
-      const base::FilePath& platform_path,
-      const scoped_refptr<webkit_blob::ShareableFileReference>& file_ref);
-  void DidPostWriteValidation(
-      const URLPair& url_pair,
-      const StatusCallback& callback,
-      const scoped_refptr<webkit_blob::ShareableFileReference>& file_ref,
-      base::PlatformFileError error);
-  void DidRemoveSourceForMove(
-      const StatusCallback& callback,
-      base::PlatformFileError error);
-  void DidRemoveDestForError(
-      base::PlatformFileError prior_error,
-      const StatusCallback& callback,
-      base::PlatformFileError error);
+  void DidFinishRecursiveCopyDir(const FileSystemURL& src,
+                                 const StatusCallback& callback,
+                                 base::PlatformFileError error);
+  void DidRemoveSourceForMove(const StatusCallback& callback,
+                              base::PlatformFileError error);
+
+  // Starts Copy (or Move based on |operation_type_|) from |src_url| to
+  // |dest_url|. Upon completion |callback| is invoked.
+  // This can be run for multiple files in parallel.
+  void CopyOrMoveFile(const FileSystemURL& src_url,
+                      const FileSystemURL& dest_url,
+                      const StatusCallback& callback);
+  void DidCopyOrMoveFile(CopyOrMoveImpl* impl,
+                         const StatusCallback& callback,
+                         base::PlatformFileError error);
 
   FileSystemURL CreateDestURL(const FileSystemURL& src_url) const;
 
   FileSystemURL src_root_;
   FileSystemURL dest_root_;
   bool same_file_system_;
   OperationType operation_type_;
   StatusCallback callback_;
 
-  scoped_refptr<webkit_blob::ShareableFileReference> current_file_ref_;
-
-  scoped_ptr<CopyOrMoveFileValidator> validator_;
-
+  std::set<CopyOrMoveImpl*> running_copy_set_;
   base::WeakPtrFactory<CopyOrMoveOperationDelegate> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(CopyOrMoveOperationDelegate);
 };
 
 }  // namespace fileapi
 
 #endif  // WEBKIT_BROWSER_FILEAPI_COPY_OR_MOVE_OPERATION_DELEGATE_H_