Move browser-specific FileAPI code from webkit/fileapi to webkit/browser/fileapi

webkit/fileapi/recursive_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_RECURSIVE_OPERATION_DELEGATE_H_
-#define WEBKIT_FILEAPI_RECURSIVE_OPERATION_DELEGATE_H_
-
-#include <queue>
-
-#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"
-
-namespace fileapi {
-
-class FileSystemContext;
-
-// A base class for recursive operation delegates.
-// This also provides some convenient default implementations for subclasses
-// like StartRecursiveOperation() and  NewNestedOperation().
-//
-// In short, each subclass should override ProcessFile and ProcessDirectory
-// to process a directory or a file. To start the recursive operation it
-// should also call StartRecursiveOperation.
-//
-// Each subclass can call NewNestedOperation to create a new file system
-// operation to perform a sub-operations, e.g. can call RemoveFile for
-// recursive Remove.
-class RecursiveOperationDelegate
-    : public base::SupportsWeakPtr<RecursiveOperationDelegate> {
- public:
-  typedef FileSystemOperation::StatusCallback StatusCallback;
-  typedef FileSystemOperation::FileEntryList FileEntryList;
-
-  RecursiveOperationDelegate(FileSystemContext* file_system_context,
-                             LocalFileSystemOperation* operation);
-  virtual ~RecursiveOperationDelegate();
-
-  // This is called when the consumer of this instance starts a non-recursive
-  // operation.
-  virtual void Run() = 0;
-
-  // This is called when the consumer of this instance starts a recursive
-  // operation.
-  virtual void RunRecursively() = 0;
-
-  // This is called each time a file is found while recursively
-  // performing an operation.
-  virtual void ProcessFile(const FileSystemURL& url,
-                           const StatusCallback& callback) = 0;
-
-  // This is called each time a directory is found while recursively
-  // performing an operation.
-  virtual void ProcessDirectory(const FileSystemURL& url,
-                                const StatusCallback& callback) = 0;
-
- protected:
-  // Starts to process files/directories recursively from the given |root|.
-  // This will call ProcessFile and ProcessDirectory on each directory or file.
-  // If the given |root| is a file this simply calls ProcessFile and exits.
-  //
-  // |callback| is fired with base::PLATFORM_FILE_OK when every file/directory
-  // under |root| is processed, or fired earlier when any suboperation fails.
-  void StartRecursiveOperation(const FileSystemURL& root,
-                               const StatusCallback& callback);
-
-  // Returns new nested sub-operation.
-  LocalFileSystemOperation* NewNestedOperation();
-
-  FileSystemContext* file_system_context() { return file_system_context_; }
-  const FileSystemContext* file_system_context() const {
-    return file_system_context_;
-  }
-
- private:
-  void ProcessNextDirectory();
-  void ProcessPendingFiles();
-  void DidProcessFile(base::PlatformFileError error);
-  void DidProcessDirectory(const FileSystemURL& url,
-                           base::PlatformFileError error);
-  void DidReadDirectory(
-      const FileSystemURL& parent,
-      base::PlatformFileError error,
-      const FileEntryList& entries,
-      bool has_more);
-  void DidTryProcessFile(base::PlatformFileError previous_error,
-                         base::PlatformFileError error);
-
-  FileSystemContext* file_system_context_;
-  LocalFileSystemOperation* operation_;
-  StatusCallback callback_;
-  std::queue<FileSystemURL> pending_directories_;
-  std::queue<FileSystemURL> pending_files_;
-  int inflight_operations_;
-
-  DISALLOW_COPY_AND_ASSIGN(RecursiveOperationDelegate);
-};
-
-}  // namespace fileapi
-
-#endif  // WEBKIT_FILEAPI_RECURSIVE_OPERATION_DELEGATE_H_