Refactor FileIO to the new design

webkit/plugins/ppapi/ppb_file_io_impl.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 WEBKIT_PLUGINS_PPAPI_PPB_FILE_IO_IMPL_H_
-#define WEBKIT_PLUGINS_PPAPI_PPB_FILE_IO_IMPL_H_
-
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/memory/weak_ptr.h"
-#include "ppapi/shared_impl/ppb_file_io_shared.h"
-#include "webkit/plugins/ppapi/plugin_delegate.h"
-
-namespace webkit {
-namespace ppapi {
-
-class QuotaFileIO;
-
-class PPB_FileIO_Impl : public ::ppapi::PPB_FileIO_Shared {
- public:
-  explicit PPB_FileIO_Impl(PP_Instance instance);
-  virtual ~PPB_FileIO_Impl();
-
-  // PPB_FileIO_API implementation (most of the operations are implemented
-  // as the "Validated" versions below).
-  virtual void Close() OVERRIDE;
-  virtual int32_t GetOSFileDescriptor() OVERRIDE;
-  virtual int32_t WillWrite(
-      int64_t offset,
-      int32_t bytes_to_write,
-      scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
-  virtual int32_t WillSetLength(
-      int64_t length,
-      scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
-
- private:
-  // FileIOImpl overrides.
-  virtual int32_t OpenValidated(
-      PP_Resource file_ref_resource,
-      ::ppapi::thunk::PPB_FileRef_API* file_ref_api,
-      int32_t open_flags,
-      scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
-  virtual int32_t QueryValidated(
-      PP_FileInfo* info,
-      scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
-  virtual int32_t TouchValidated(
-      PP_Time last_access_time,
-      PP_Time last_modified_time,
-      scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
-  virtual int32_t ReadValidated(
-      int64_t offset,
-      const PP_ArrayOutput& output_array_buffer,
-      int32_t max_read_length,
-      scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
-  virtual int32_t WriteValidated(
-      int64_t offset,
-      const char* buffer,
-      int32_t bytes_to_write,
-      scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
-  virtual int32_t SetLengthValidated(
-      int64_t length,
-      scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
-  virtual int32_t FlushValidated(
-      scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
-
-  // Returns the plugin delegate for this resource if it exists, or NULL if it
-  // doesn't. Calling code should always check for NULL.
-  PluginDelegate* GetPluginDelegate();
-
-  // Callback handlers. These mostly convert the PlatformFileError to the
-  // PP_Error code and call the shared (non-"Platform") version.
-  void ExecutePlatformGeneralCallback(base::PlatformFileError error_code);
-  void ExecutePlatformOpenFileCallback(base::PlatformFileError error_code,
-                                       base::PassPlatformFile file);
-  void ExecutePlatformOpenFileSystemURLCallback(
-      base::PlatformFileError error_code,
-      base::PassPlatformFile file,
-      const PluginDelegate::NotifyCloseFileCallback& callback);
-  void ExecutePlatformQueryCallback(base::PlatformFileError error_code,
-                                    const base::PlatformFileInfo& file_info);
-  void ExecutePlatformReadCallback(base::PlatformFileError error_code,
-                                   const char* data, int bytes_read);
-  void ExecutePlatformWriteCallback(base::PlatformFileError error_code,
-                                    int bytes_written);
-  void ExecutePlatformWillWriteCallback(base::PlatformFileError error_code,
-                                        int bytes_written);
-
-  base::PlatformFile file_;
-
-  // Valid only for PP_FILESYSTEMTYPE_LOCAL{PERSISTENT,TEMPORARY}.
-  GURL file_system_url_;
-
-  // Callback function for notifying when the file handle is closed.
-  PluginDelegate::NotifyCloseFileCallback notify_close_file_callback_;
-
-  // Pointer to a QuotaFileIO instance, which is valid only while a file
-  // of type PP_FILESYSTEMTYPE_LOCAL{PERSISTENT,TEMPORARY} is opened.
-  scoped_ptr<QuotaFileIO> quota_file_io_;
-
-  base::WeakPtrFactory<PPB_FileIO_Impl> weak_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(PPB_FileIO_Impl);
-};
-
-}  // namespace ppapi
-}  // namespace webkit
-
-#endif  // WEBKIT_PLUGINS_PPAPI_PPB_FILE_IO_IMPL_H_