Split recursive Copy/Move into async tasks and support cross operation (in local case)

webkit/fileapi/remove_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_FILEAPI_REMOVE_OPERATION_DELEGATE_H_
 #define WEBKIT_FILEAPI_REMOVE_OPERATION_DELEGATE_H_
 
-#include <queue>
 #include <stack>
 
-#include "base/basictypes.h"
-#include "base/callback.h"
-#include "base/memory/weak_ptr.h"
-#include "webkit/fileapi/file_system_operation.h"
-#include "webkit/fileapi/file_system_url.h"
+#include "webkit/fileapi/recursive_operation_delegate.h"
 
 namespace fileapi {
 
-class FileSystemURL;
-class LocalFileSystemOperation;
-
 class RemoveOperationDelegate
-    : public base::SupportsWeakPtr<RemoveOperationDelegate> {
+    : public RecursiveOperationDelegate,
+      public base::SupportsWeakPtr<RemoveOperationDelegate> {
  public:
-  typedef FileSystemOperation::StatusCallback StatusCallback;
-  typedef FileSystemOperation::FileEntryList FileEntryList;
-
   RemoveOperationDelegate(LocalFileSystemOperation* original_operation,
+                          const FileSystemURL& url,
                           const StatusCallback& callback);
   virtual ~RemoveOperationDelegate();
 
-  void Run(const FileSystemURL& url);
-  void RunRecursively(const FileSystemURL& url);
+  // 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;
+
+  using base::SupportsWeakPtr<RemoveOperationDelegate>::AsWeakPtr;
 
  private:
-  void ProcessNextDirectory(base::PlatformFileError error);
-  void DidTryRemoveFile(
-      const FileSystemURL& url,
-      base::PlatformFileError error);
-  void DidReadDirectory(
-      const FileSystemURL& parent,
-      base::PlatformFileError error,
-      const FileEntryList& entries,
-      bool has_more);
-  void RemoveFile(const FileSystemURL& url);
-  void DidRemoveFile(base::PlatformFileError error);
+  void DidTryRemoveFile(base::PlatformFileError error);
+  void DidRemoveFile(const StatusCallback& callback,
+                     base::PlatformFileError error);
   void RemoveNextDirectory(base::PlatformFileError error);
 
-  LocalFileSystemOperation* NewOperation(const FileSystemURL& url);
-
-  LocalFileSystemOperation* original_operation_;
+  FileSystemURL url_;
   StatusCallback callback_;
 
-  std::queue<FileSystemURL> pending_directories_;
   std::stack<FileSystemURL> to_remove_directories_;
 
-  int inflight_operations_;
-
   DISALLOW_COPY_AND_ASSIGN(RemoveOperationDelegate);
 };
 
 }  // namespace fileapi
 
 #endif  // WEBKIT_FILEAPI_REMOVE_OPERATION_DELEGATE_H_