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serenity/Userland/Libraries/LibWeb/FileAPI/Blob.h
Kenneth Myhra 622a4f29a7 LibWeb: Add public get accessor function for Blob's internal ByteBuffer
Blob::bytes() returns the ReadonlyBytes representation of our internal
ByteBuffer.

This change requires us to ByteBuffer::copy() Blob's ReadonlyBytes to a
ByteBuffer in XHR::send() and corresponding error handling of the copy
operation.

This removes the need for Blob to declare XMLHttpRequest as a friend
class.
2022-07-26 20:54:30 +01:00

61 lines
1.8 KiB
C++

/*
* Copyright (c) 2022, Kenneth Myhra <kennethmyhra@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/NonnullRefPtr.h>
#include <AK/RefCounted.h>
#include <AK/String.h>
#include <AK/Vector.h>
#include <LibWeb/Bindings/BlobWrapper.h>
#include <LibWeb/Bindings/WindowObject.h>
#include <LibWeb/Bindings/Wrappable.h>
#include <LibWeb/DOM/ExceptionOr.h>
#include <LibWeb/Forward.h>
#include <LibWeb/HTML/Window.h>
namespace Web::FileAPI {
using BlobPart = Variant<JS::Handle<JS::Object>, NonnullRefPtr<Blob>, String>;
struct BlobPropertyBag {
String type = String::empty();
Bindings::EndingType endings;
};
class Blob
: public RefCounted<Blob>
, public Weakable<Blob>
, public Bindings::Wrappable {
public:
using WrapperType = Bindings::BlobWrapper;
Blob(ByteBuffer byte_buffer, String type);
static DOM::ExceptionOr<NonnullRefPtr<Blob>> create(Optional<Vector<BlobPart>> const& blob_parts = {}, Optional<BlobPropertyBag> const& options = {});
static DOM::ExceptionOr<NonnullRefPtr<Blob>> create_with_global_object(Bindings::WindowObject&, Optional<Vector<BlobPart>> const& blob_parts = {}, Optional<BlobPropertyBag> const& options = {});
u64 size() const { return m_byte_buffer.size(); }
String type() const& { return m_type; }
DOM::ExceptionOr<NonnullRefPtr<Blob>> slice(Optional<i64> start = {}, Optional<i64> end = {}, Optional<String> const& content_type = {});
JS::Promise* text();
JS::Promise* array_buffer();
virtual JS::Object* create_wrapper(JS::GlobalObject&);
ReadonlyBytes bytes() const { return m_byte_buffer.bytes(); }
private:
Blob() = default;
static ErrorOr<ByteBuffer> process_blob_parts(Vector<BlobPart> const& blob_parts);
ByteBuffer m_byte_buffer {};
String m_type {};
};
}