third_party/blink/renderer/core/messaging/blink_transferable_message.h

// Copyright 2017 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 THIRD_PARTY_BLINK_RENDERER_CORE_MESSAGING_BLINK_TRANSFERABLE_MESSAGE_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_MESSAGING_BLINK_TRANSFERABLE_MESSAGE_H_

#include "base/macros.h"
#include "third_party/blink/public/common/messaging/message_port_channel.h"
#include "third_party/blink/public/common/messaging/transferable_message.h"
#include "third_party/blink/public/common/scheduler/task_attribution_id.h"
#include "third_party/blink/public/mojom/messaging/user_activation_snapshot.mojom-blink.h"
#include "third_party/blink/renderer/bindings/core/v8/serialization/serialized_script_value.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/messaging/blink_cloneable_message.h"
#include "third_party/blink/renderer/platform/weborigin/security_origin.h"
#include "third_party/blink/renderer/platform/wtf/cross_thread_copier.h"

namespace blink {

class MessageEvent;

// This struct represents messages as they are posted over a message port. This
// type can be serialized as a blink::mojom::TransferableMessage struct.
// This is the renderer-side equivalent of blink::TransferableMessage, where
// this struct uses blink types, while the other struct uses std:: types.
struct CORE_EXPORT BlinkTransferableMessage : BlinkCloneableMessage {
  static BlinkTransferableMessage FromMessageEvent(
      MessageEvent*,
      absl::optional<base::UnguessableToken> cluster_id = absl::nullopt);
  static BlinkTransferableMessage FromTransferableMessage(TransferableMessage);

  BlinkTransferableMessage();
  ~BlinkTransferableMessage();

  BlinkTransferableMessage(BlinkTransferableMessage&&);
  BlinkTransferableMessage& operator=(BlinkTransferableMessage&&);

  Vector<MessagePortChannel> ports;

  mojom::blink::UserActivationSnapshotPtr user_activation;

  bool delegate_payment_request = false;

  absl::optional<scheduler::TaskAttributionId> parent_task_id;

 private:
  DISALLOW_COPY_AND_ASSIGN(BlinkTransferableMessage);
};

CORE_EXPORT scoped_refptr<blink::StaticBitmapImage> ToStaticBitmapImage(
    const SkBitmap& sk_bitmap);

CORE_EXPORT absl::optional<SkBitmap> ToSkBitmap(
    const scoped_refptr<blink::StaticBitmapImage>& static_bitmap_image);

}  // namespace blink

namespace WTF {

template <>
struct CrossThreadCopier<blink::BlinkTransferableMessage> {
  STATIC_ONLY(CrossThreadCopier);
  using Type = blink::BlinkTransferableMessage;
  static Type Copy(Type pointer) {
    return pointer;  // This is in fact a move.
  }
};

}  // namespace WTF

#endif  // THIRD_PARTY_BLINK_RENDERER_CORE_MESSAGING_BLINK_TRANSFERABLE_MESSAGE_H_