blob: 577f89880d368e2e235cc7f65b0fafbb6c71d954 [file] [log] [blame]
// Copyright 2015 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef COBALT_DOM_BLOB_H_
#define COBALT_DOM_BLOB_H_
#include <algorithm>
#include <string>
#include <vector>
#include "cobalt/dom/array_buffer.h"
#include "cobalt/dom/array_buffer_view.h"
#include "cobalt/dom/data_view.h"
#include "cobalt/dom/url_registry.h"
#include "cobalt/script/environment_settings.h"
#include "cobalt/script/sequence.h"
#include "cobalt/script/union_type.h"
#include "cobalt/script/wrappable.h"
#include "googleurl/src/gurl.h"
namespace cobalt {
namespace dom {
// This ensures this header can be included without depending on generated
// dictionaries.
class BlobPropertyBag;
// A Blob object refers to a byte sequence, and has a size attribute which is
// the total number of bytes in the byte sequence, and a type attribute, which
// is an ASCII-encoded string in lower case representing the media type of the
// byte sequence.
// https://www.w3.org/TR/FileAPI/#dfn-Blob
class Blob : public script::Wrappable {
public:
typedef UrlRegistry<Blob> Registry;
typedef script::UnionType4<
scoped_refptr<ArrayBuffer>, scoped_refptr<ArrayBufferView>,
scoped_refptr<DataView>, scoped_refptr<Blob> > BlobPart;
Blob(script::EnvironmentSettings* settings,
const scoped_refptr<ArrayBuffer>& buffer = NULL);
Blob(script::EnvironmentSettings* settings,
const script::Sequence<BlobPart>& blob_parts,
const BlobPropertyBag& options = EmptyBlobPropertyBag());
const uint8* data() { return buffer_->data(); }
uint64 size() const { return static_cast<uint64>(buffer_->byte_length()); }
DEFINE_WRAPPABLE_TYPE(Blob);
void TraceMembers(script::Tracer* tracer) override;
private:
static const BlobPropertyBag& EmptyBlobPropertyBag();
scoped_refptr<ArrayBuffer> buffer_;
const std::string type_;
DISALLOW_COPY_AND_ASSIGN(Blob);
};
} // namespace dom
} // namespace cobalt
#endif // COBALT_DOM_BLOB_H_