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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 PPAPI_PROXY_FILE_IO_RESOURCE_H_
#define PPAPI_PROXY_FILE_IO_RESOURCE_H_
#include <string>
#include "ppapi/c/private/pp_file_handle.h"
#include "ppapi/proxy/connection.h"
#include "ppapi/proxy/plugin_resource.h"
#include "ppapi/proxy/ppapi_proxy_export.h"
#include "ppapi/shared_impl/file_io_state_manager.h"
#include "ppapi/thunk/ppb_file_io_api.h"
namespace ppapi {
class TrackedCallback;
namespace proxy {
class PPAPI_PROXY_EXPORT FileIOResource
: public PluginResource,
public thunk::PPB_FileIO_API {
public:
FileIOResource(Connection connection, PP_Instance instance);
virtual ~FileIOResource();
// Resource overrides.
virtual thunk::PPB_FileIO_API* AsPPB_FileIO_API() OVERRIDE;
// PPB_FileIO_API implementation.
virtual int32_t Open(PP_Resource file_ref,
int32_t open_flags,
scoped_refptr<TrackedCallback> callback) OVERRIDE;
virtual int32_t Query(PP_FileInfo* info,
scoped_refptr<TrackedCallback> callback) OVERRIDE;
virtual int32_t Touch(PP_Time last_access_time,
PP_Time last_modified_time,
scoped_refptr<TrackedCallback> callback) OVERRIDE;
virtual int32_t Read(int64_t offset,
char* buffer,
int32_t bytes_to_read,
scoped_refptr<TrackedCallback> callback) OVERRIDE;
virtual int32_t ReadToArray(int64_t offset,
int32_t max_read_length,
PP_ArrayOutput* array_output,
scoped_refptr<TrackedCallback> callback) OVERRIDE;
virtual int32_t Write(int64_t offset,
const char* buffer,
int32_t bytes_to_write,
scoped_refptr<TrackedCallback> callback) OVERRIDE;
virtual int32_t SetLength(int64_t length,
scoped_refptr<TrackedCallback> callback) OVERRIDE;
virtual int32_t Flush(scoped_refptr<TrackedCallback> callback) OVERRIDE;
virtual void Close() OVERRIDE;
virtual int32_t GetOSFileDescriptor() OVERRIDE;
virtual int32_t RequestOSFileHandle(
PP_FileHandle* handle,
scoped_refptr<TrackedCallback> callback) OVERRIDE;
virtual int32_t WillWrite(int64_t offset,
int32_t bytes_to_write,
scoped_refptr<TrackedCallback> callback) OVERRIDE;
virtual int32_t WillSetLength(
int64_t length,
scoped_refptr<TrackedCallback> callback) OVERRIDE;
private:
int32_t ReadValidated(int64_t offset,
int32_t bytes_to_read,
const PP_ArrayOutput& array_output,
scoped_refptr<TrackedCallback> callback);
// Handlers of reply messages. Note that all of them have a callback
// parameters bound when call to the host.
void OnPluginMsgGeneralComplete(scoped_refptr<TrackedCallback> callback,
const ResourceMessageReplyParams& params);
void OnPluginMsgOpenFileComplete(scoped_refptr<TrackedCallback> callback,
const ResourceMessageReplyParams& params);
void OnPluginMsgQueryComplete(scoped_refptr<TrackedCallback> callback,
PP_FileInfo* output_info_,
const ResourceMessageReplyParams& params,
const PP_FileInfo& info);
void OnPluginMsgReadComplete(scoped_refptr<TrackedCallback> callback,
PP_ArrayOutput array_output,
const ResourceMessageReplyParams& params,
const std::string& data);
void OnPluginMsgRequestOSFileHandleComplete(
scoped_refptr<TrackedCallback> callback,
PP_FileHandle* output_handle,
const ResourceMessageReplyParams& params);
FileIOStateManager state_manager_;
DISALLOW_COPY_AND_ASSIGN(FileIOResource);
};
} // namespace proxy
} // namespace ppapi
#endif // PPAPI_PROXY_FILE_IO_RESOURCE_H_
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