/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef mozilla_dom_MessageEvent_h_

#define mozilla_dom_MessageEvent_h_

#include "mozilla/dom/Event.h"

#include "mozilla/dom/BindingUtils.h"

#include "nsCycleCollectionParticipant.h"

namespace mozilla {

namespace dom {

struct MessageEventInit;

class MessagePort;

class OwningWindowProxyOrMessagePortOrServiceWorker;

class ServiceWorker;

class WindowProxyOrMessagePortOrServiceWorker;

/**

 * Implements the MessageEvent event, used for cross-document messaging and

 * server-sent events.

 *

 * See http://www.whatwg.org/specs/web-apps/current-work/#messageevent for

 * further details.

 */

class MessageEvent final : public Event

{

public:

  MessageEvent(EventTarget* aOwner,

               nsPresContext* aPresContext,

               WidgetEvent* aEvent);

  NS_DECL_ISUPPORTS_INHERITED

  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(MessageEvent, Event)

  virtual JSObject* WrapObjectInternal(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;

  void GetData(JSContext* aCx, JS::MutableHandle<JS::Value> aData,

               ErrorResult& aRv);

  void GetOrigin(nsAString&) const;

  void GetLastEventId(nsAString&) const;

  void GetSource(Nullable<OwningWindowProxyOrMessagePortOrServiceWorker>& aValue) const;

  void GetPorts(nsTArray<RefPtr<MessagePort>>& aPorts);

  static already_AddRefed<MessageEvent>

  Constructor(const GlobalObject& aGlobal,

              const nsAString& aType,

              const MessageEventInit& aEventInit,

              ErrorResult& aRv);

  static already_AddRefed<MessageEvent>

  Constructor(EventTarget* aEventTarget,

              const nsAString& aType,

              const MessageEventInit& aEventInit);

  void InitMessageEvent(JSContext* aCx, const nsAString& aType,

                        bool aCanBubble, bool aCancelable,

                        JS::Handle<JS::Value> aData,

                        const nsAString& aOrigin, const nsAString& aLastEventId,

                        const Nullable<WindowProxyOrMessagePortOrServiceWorker>& aSource,

                        const Sequence<OwningNonNull<MessagePort>>& aPorts)

  {

    InitMessageEvent(aCx, aType,

                     aCanBubble ? CanBubble::eYes : CanBubble::eNo,

                     aCancelable ? Cancelable::eYes : Cancelable::eNo,

                     aData,

                     aOrigin, aLastEventId,

                     aSource, aPorts);

  }

  void InitMessageEvent(JSContext* aCx, const nsAString& aType,

                        mozilla::CanBubble, mozilla::Cancelable,

                        JS::Handle<JS::Value> aData,

                        const nsAString& aOrigin, const nsAString& aLastEventId,

                        const Nullable<WindowProxyOrMessagePortOrServiceWorker>& aSource,

                        const Sequence<OwningNonNull<MessagePort>>& aPorts);

protected:

  ~MessageEvent();

private:

  JS::Heap<JS::Value> mData;

  nsString mOrigin;

  nsString mLastEventId;

  RefPtr<nsPIDOMWindowOuter> mWindowSource;

  RefPtr<MessagePort> mPortSource;

  RefPtr<ServiceWorker> mServiceWorkerSource;

  nsTArray<RefPtr<MessagePort>> mPorts;

};

} // namespace dom

} // namespace mozilla

#endif // mozilla_dom_MessageEvent_h_