third_party/WebKit/Source/modules/presentation/Presentation.h

// Copyright 2014 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 Presentation_h
#define Presentation_h

#include "core/dom/ContextLifecycleObserver.h"
#include "platform/bindings/ScriptWrappable.h"
#include "platform/heap/Handle.h"
#include "platform/heap/Heap.h"

namespace blink {

class LocalFrame;
class PresentationReceiver;
class PresentationRequest;

// Implements the main entry point of the Presentation API corresponding to the
// Presentation.idl
// See https://w3c.github.io/presentation-api/#navigatorpresentation for
// details.
class Presentation final : public ScriptWrappable, public ContextClient {
  USING_GARBAGE_COLLECTED_MIXIN(Presentation);
  DEFINE_WRAPPERTYPEINFO();

 public:
  static Presentation* Create(LocalFrame*);

  virtual void Trace(blink::Visitor*);

  PresentationRequest* defaultRequest() const;
  void setDefaultRequest(PresentationRequest*);

  PresentationReceiver* receiver();

 private:
  explicit Presentation(LocalFrame*);

  // Default PresentationRequest used by the embedder.
  Member<PresentationRequest> default_request_;

  // PresentationReceiver instance. It will always be nullptr if the Blink
  // instance is not running as a presentation receiver.
  Member<PresentationReceiver> receiver_;
};

}  // namespace blink

#endif  // Presentation_h