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// 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"
struct PP_CompletionCallback;
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,
PP_CompletionCallback callback) OVERRIDE;
virtual int32_t WillSetLength(int64_t length,
PP_CompletionCallback 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,
PP_CompletionCallback callback) OVERRIDE;
virtual int32_t QueryValidated(PP_FileInfo* info,
PP_CompletionCallback callback) OVERRIDE;
virtual int32_t TouchValidated(PP_Time last_access_time,
PP_Time last_modified_time,
PP_CompletionCallback callback) OVERRIDE;
virtual int32_t ReadValidated(int64_t offset,
char* buffer,
int32_t bytes_to_read,
PP_CompletionCallback callback) OVERRIDE;
virtual int32_t WriteValidated(int64_t offset,
const char* buffer,
int32_t bytes_to_write,
PP_CompletionCallback callback) OVERRIDE;
virtual int32_t SetLengthValidated(int64_t length,
PP_CompletionCallback callback) OVERRIDE;
virtual int32_t FlushValidated(PP_CompletionCallback 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 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_;
// 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_
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