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// 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_CROSS_OPERATION_DELEGATE_H_
#define WEBKIT_FILEAPI_CROSS_OPERATION_DELEGATE_H_
#include <stack>
#include "base/memory/ref_counted.h"
#include "webkit/fileapi/recursive_operation_delegate.h"
namespace webkit_blob {
class ShareableFileReference;
}
namespace fileapi {
// A delegate class for recursive copy or move operations.
class CrossOperationDelegate
: public RecursiveOperationDelegate,
public base::SupportsWeakPtr<CrossOperationDelegate> {
public:
enum OperationType {
OPERATION_COPY,
OPERATION_MOVE
};
CrossOperationDelegate(LocalFileSystemOperation* original_operation,
const FileSystemURL& src_root,
const FileSystemURL& dest_root,
OperationType operation_type,
const StatusCallback& callback);
virtual ~CrossOperationDelegate();
// 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<CrossOperationDelegate>::AsWeakPtr;
private:
void DidTryCopyOrMoveFile(base::PlatformFileError error);
void DidTryRemoveDestRoot(base::PlatformFileError error);
void CopyOrMoveFile(
const FileSystemURL& src,
const FileSystemURL& dest,
const StatusCallback& callback);
void DidCreateSnapshot(
const FileSystemURL& dest,
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 DidFinishCopy(
const FileSystemURL& src,
const StatusCallback& callback,
base::PlatformFileError error);
void DidRemoveSourceForMove(
const StatusCallback& callback,
base::PlatformFileError error);
FileSystemURL CreateDestURL(const FileSystemURL& src_url) const;
// Create nested operations for recursive task.
// When the creation fails it fires callback_ with the
// error code and returns NULL.
//
// - NewDestOperation is basically a thin wrapper of
// RecursiveOperationDelegate::NewOperation().
// (Since the original_operation must have been created for the destination
// URL. TODO(kinuko): we should have some assertion for this assumption)
//
// - NewSourceOperation also redirects the request to
// RecursiveOperationDelegate::NewOperation() **iff** same_file_system_
// is true.
// Otherwise it's for cross-filesystem operation and it needs a
// separate FileSystemOperationContext, so it creates a new operation
// which inherits context from src_root_operation_.
//
LocalFileSystemOperation* NewSourceOperation(const FileSystemURL& url);
LocalFileSystemOperation* NewDestOperation(const FileSystemURL& url);
FileSystemURL src_root_;
FileSystemURL dest_root_;
bool same_file_system_;
OperationType operation_type_;
StatusCallback callback_;
LocalFileSystemOperation* src_root_operation_;
scoped_refptr<webkit_blob::ShareableFileReference> current_file_ref_;
DISALLOW_COPY_AND_ASSIGN(CrossOperationDelegate);
};
} // namespace fileapi
#endif // WEBKIT_FILEAPI_CROSS_OPERATION_DELEGATE_H_
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