/* -*- 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_PendingFullscreenEvent_h_

#define mozilla_PendingFullscreenEvent_h_

#include "nsContentUtils.h"

class nsIDocument;

namespace mozilla {

enum class FullscreenEventType

{

  Change,

  Error,

};

/*

 * Class for dispatching a fullscreen event. It should be queued and

 * invoked as part of "run the fullscreen steps" algorithm.

 */

class PendingFullscreenEvent

{

public:

  PendingFullscreenEvent(FullscreenEventType aType,

                         nsIDocument* aDocument,

                         nsINode* aTarget)

    : mDocument(aDocument)

    , mTarget(aTarget)

    , mType(aType)

  {

    MOZ_ASSERT(aDocument);

    MOZ_ASSERT(aTarget);

  }

  nsIDocument* Document() const { return mDocument; }

  void Dispatch()

  {

#ifdef DEBUG

    MOZ_ASSERT(!mDispatched);

    mDispatched = true;

#endif

    nsString name;

    switch (mType) {

      case FullscreenEventType::Change:

        name = NS_LITERAL_STRING("fullscreenchange");

        break;

      case FullscreenEventType::Error:

        name = NS_LITERAL_STRING("fullscreenerror");

        break;

    }

    nsINode* target = mTarget->GetComposedDoc() == mDocument

      ? mTarget.get() : mDocument.get();

    Unused << nsContentUtils::DispatchTrustedEvent(

      mDocument, target, name,

      CanBubble::eYes, Cancelable::eNo, Composed::eYes);

  }

private:

  nsCOMPtr<nsIDocument> mDocument;

  nsCOMPtr<nsINode> mTarget;

  FullscreenEventType mType;

#ifdef DEBUG

  bool mDispatched = false;

#endif

};

} // namespace mozilla

#endif // mozilla_PendingFullscreenEvent_h_