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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 PPAPI_PROXY_FILE_SYSTEM_RESOURCE_H_
#define PPAPI_PROXY_FILE_SYSTEM_RESOURCE_H_
#include <map>
#include <queue>
#include <string>
#include "base/memory/ref_counted.h"
#include "ppapi/c/pp_file_info.h"
#include "ppapi/c/pp_resource.h"
#include "ppapi/c/private/ppb_isolated_file_system_private.h"
#include "ppapi/proxy/connection.h"
#include "ppapi/proxy/plugin_resource.h"
#include "ppapi/proxy/ppapi_proxy_export.h"
#include "ppapi/proxy/resource_message_params.h"
#include "ppapi/thunk/ppb_file_system_api.h"
namespace ppapi {
class TrackedCallback;
namespace proxy {
class PPAPI_PROXY_EXPORT FileSystemResource
: public PluginResource,
public NON_EXPORTED_BASE(thunk::PPB_FileSystem_API) {
public:
// Creates a new FileSystemResource. The resource must be subsequently opened
// via Open() before use.
FileSystemResource(Connection connection,
PP_Instance instance,
PP_FileSystemType type);
// Creates a FileSystemResource, attached to an existing pending host
// resource. The |pending_renderer_id| and |pending_browser_id| must be
// already-opened file systems.
FileSystemResource(Connection connection,
PP_Instance instance,
int pending_renderer_id,
int pending_browser_id,
PP_FileSystemType type);
virtual ~FileSystemResource();
// Resource overrides.
virtual thunk::PPB_FileSystem_API* AsPPB_FileSystem_API() OVERRIDE;
// PPB_FileSystem_API implementation.
virtual int32_t Open(int64_t expected_size,
scoped_refptr<TrackedCallback> callback) OVERRIDE;
virtual PP_FileSystemType GetType() OVERRIDE;
virtual void OpenQuotaFile(PP_Resource file_io) OVERRIDE;
virtual void CloseQuotaFile(PP_Resource file_io) OVERRIDE;
typedef base::Callback<void(int64_t)> RequestQuotaCallback;
virtual int64_t RequestQuota(int64_t amount,
const RequestQuotaCallback& callback) OVERRIDE;
int32_t InitIsolatedFileSystem(const std::string& fsid,
PP_IsolatedFileSystemType_Private type,
const base::Callback<void(int32_t)>& callback);
private:
struct QuotaRequest {
QuotaRequest(int64_t amount,
const RequestQuotaCallback& callback);
~QuotaRequest();
int64_t amount;
RequestQuotaCallback callback;
};
// Called when the host has responded to our open request.
void OpenComplete(scoped_refptr<TrackedCallback> callback,
const ResourceMessageReplyParams& params);
// Called when the host has responded to our InitIsolatedFileSystem request.
void InitIsolatedFileSystemComplete(
const base::Callback<void(int32_t)>& callback,
const ResourceMessageReplyParams& params);
void ReserveQuota(int64_t amount);
typedef std::map<int32_t, int64_t> OffsetMap;
void ReserveQuotaComplete(const ResourceMessageReplyParams& params,
int64_t amount,
const OffsetMap& max_written_offsets);
PP_FileSystemType type_;
bool called_open_;
uint32_t callback_count_;
int32_t callback_result_;
OffsetMap max_written_offsets_;
std::queue<QuotaRequest> pending_quota_requests_;
int64_t reserved_quota_;
bool reserving_quota_;
DISALLOW_COPY_AND_ASSIGN(FileSystemResource);
};
} // namespace proxy
} // namespace ppapi
#endif // PPAPI_PROXY_FILE_SYSTEM_RESOURCE_H_
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