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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_GLUE_RESOURCE_REQUEST_BODY_H_
#define WEBKIT_GLUE_RESOURCE_REQUEST_BODY_H_
#include <vector>
#include "base/basictypes.h"
#include "base/memory/ref_counted.h"
#include "base/supports_user_data.h"
#include "webkit/base/data_element.h"
#include "webkit/glue/webkit_glue_export.h"
namespace base {
class TaskRunner;
}
namespace fileapi {
class FileSystemContext;
}
namespace net {
class UploadDataStream;
}
namespace webkit_blob {
class BlobStorageController;
}
namespace webkit_glue {
// A struct used to represent upload data. The data field is populated by
// WebURLLoader from the data given as WebHTTPBody.
class WEBKIT_GLUE_EXPORT ResourceRequestBody
: public base::RefCounted<ResourceRequestBody>,
public base::SupportsUserData {
public:
typedef webkit_base::DataElement Element;
ResourceRequestBody();
void AppendBytes(const char* bytes, int bytes_len);
void AppendFileRange(const FilePath& file_path,
uint64 offset, uint64 length,
const base::Time& expected_modification_time);
void AppendBlob(const GURL& blob_url);
void AppendFileSystemFileRange(const GURL& url, uint64 offset, uint64 length,
const base::Time& expected_modification_time);
// Creates a new UploadDataStream from this request body. This also resolves
// any blob references using given |blob_controller|. |file_system_context| is
// used to create FileStreamReader for files with filesystem URLs.
// |file_task_runner| is used to perform file operations when the data gets
// uploaded.
net::UploadDataStream* ResolveElementsAndCreateUploadDataStream(
webkit_blob::BlobStorageController* blob_controller,
fileapi::FileSystemContext* file_system_context,
base::TaskRunner* file_task_runner);
const std::vector<Element>* elements() const { return &elements_; }
std::vector<Element>* elements_mutable() { return &elements_; }
void swap_elements(std::vector<Element>* elements) {
elements_.swap(*elements);
}
// Identifies a particular upload instance, which is used by the cache to
// formulate a cache key. This value should be unique across browser
// sessions. A value of 0 is used to indicate an unspecified identifier.
void set_identifier(int64 id) { identifier_ = id; }
int64 identifier() const { return identifier_; }
private:
friend class base::RefCounted<ResourceRequestBody>;
virtual ~ResourceRequestBody();
// Resolves the |blob_url| using |blob_controller| and appends resolved
// items to |resolved_elements|.
void ResolveBlobReference(webkit_blob::BlobStorageController* blob_controller,
const GURL& blob_url,
std::vector<const Element*>* resolved_elements);
std::vector<Element> elements_;
int64 identifier_;
DISALLOW_COPY_AND_ASSIGN(ResourceRequestBody);
};
} // namespace webkit_glue
#endif // WEBKIT_GLUE_RESOURCE_REQUEST_BODY_H_
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