gecko-dev/dom/presentation/PresentationSessionInfo.h

/* -*- 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_PresentationSessionInfo_h
#define mozilla_dom_PresentationSessionInfo_h

#include "mozilla/dom/Promise.h"
#include "mozilla/dom/PromiseNativeHandler.h"
#include "mozilla/nsRefPtr.h"
#include "nsCOMPtr.h"
#include "nsIPresentationControlChannel.h"
#include "nsIPresentationDevice.h"
#include "nsIPresentationListener.h"
#include "nsIPresentationService.h"
#include "nsIPresentationSessionTransport.h"
#include "nsIServerSocket.h"
#include "nsITimer.h"
#include "nsString.h"
#include "PresentationCallbacks.h"

namespace mozilla {
namespace dom {

class PresentationSessionInfo : public nsIPresentationSessionTransportCallback
                              , public nsIPresentationControlChannelListener
{
public:
  NS_DECL_ISUPPORTS
  NS_DECL_NSIPRESENTATIONSESSIONTRANSPORTCALLBACK

  PresentationSessionInfo(const nsAString& aUrl,
                          const nsAString& aSessionId,
                          nsIPresentationServiceCallback* aCallback)
    : mUrl(aUrl)
    , mSessionId(aSessionId)
    , mIsResponderReady(false)
    , mIsTransportReady(false)
    , mCallback(aCallback)
  {
    MOZ_ASSERT(!mUrl.IsEmpty());
    MOZ_ASSERT(!mSessionId.IsEmpty());
  }

  virtual nsresult Init(nsIPresentationControlChannel* aControlChannel);

  const nsAString& GetUrl() const
  {
    return mUrl;
  }

  const nsAString& GetSessionId() const
  {
    return mSessionId;
  }

  void SetCallback(nsIPresentationServiceCallback* aCallback)
  {
    mCallback = aCallback;
  }

  nsresult SetListener(nsIPresentationSessionListener* aListener);

  void SetDevice(nsIPresentationDevice* aDevice)
  {
    mDevice = aDevice;
  }

  already_AddRefed<nsIPresentationDevice> GetDevice() const
  {
    nsCOMPtr<nsIPresentationDevice> device = mDevice;
    return device.forget();
  }

  void SetControlChannel(nsIPresentationControlChannel* aControlChannel)
  {
    if (mControlChannel) {
      mControlChannel->SetListener(nullptr);
    }

    mControlChannel = aControlChannel;
    if (mControlChannel) {
      mControlChannel->SetListener(this);
    }
  }

  nsresult Send(nsIInputStream* aData);

  nsresult Close(nsresult aReason);

  nsresult ReplyError(nsresult aReason);

protected:
  virtual ~PresentationSessionInfo()
  {
    Shutdown(NS_OK);
  }

  virtual void Shutdown(nsresult aReason);

  nsresult ReplySuccess();

  bool IsSessionReady()
  {
    return mIsResponderReady && mIsTransportReady;
  }

  nsString mUrl;
  nsString mSessionId;
  bool mIsResponderReady;
  bool mIsTransportReady;
  nsCOMPtr<nsIPresentationServiceCallback> mCallback;
  nsCOMPtr<nsIPresentationSessionListener> mListener;
  nsCOMPtr<nsIPresentationDevice> mDevice;
  nsCOMPtr<nsIPresentationSessionTransport> mTransport;
  nsCOMPtr<nsIPresentationControlChannel> mControlChannel;
};

// Session info with sender side behaviors.
class PresentationRequesterInfo final : public PresentationSessionInfo
                                      , public nsIServerSocketListener
{
public:
  NS_DECL_ISUPPORTS_INHERITED
  NS_DECL_NSIPRESENTATIONCONTROLCHANNELLISTENER
  NS_DECL_NSISERVERSOCKETLISTENER

  PresentationRequesterInfo(const nsAString& aUrl,
                            const nsAString& aSessionId,
                            nsIPresentationServiceCallback* aCallback)
    : PresentationSessionInfo(aUrl, aSessionId, aCallback)
  {
    MOZ_ASSERT(mCallback);
  }

  nsresult Init(nsIPresentationControlChannel* aControlChannel) override;

private:
  ~PresentationRequesterInfo()
  {
    Shutdown(NS_OK);
  }

  void Shutdown(nsresult aReason) override;

  nsresult GetAddress(nsACString& aAddress);

  nsCOMPtr<nsIServerSocket> mServerSocket;
};

// Session info with receiver side behaviors.
class PresentationResponderInfo final : public PresentationSessionInfo
                                      , public PromiseNativeHandler
                                      , public nsITimerCallback
{
public:
  NS_DECL_ISUPPORTS_INHERITED
  NS_DECL_NSIPRESENTATIONCONTROLCHANNELLISTENER
  NS_DECL_NSITIMERCALLBACK

  PresentationResponderInfo(const nsAString& aUrl,
                            const nsAString& aSessionId,
                            nsIPresentationDevice* aDevice)
    : PresentationSessionInfo(aUrl, aSessionId, nullptr)
  {
    MOZ_ASSERT(aDevice);

    SetDevice(aDevice);
  }

  nsresult Init(nsIPresentationControlChannel* aControlChannel) override;

  nsresult NotifyResponderReady();

  void ResolvedCallback(JSContext* aCx, JS::Handle<JS::Value> aValue) override;

  void RejectedCallback(JSContext* aCx, JS::Handle<JS::Value> aValue) override;

  void SetPromise(Promise* aPromise)
  {
    mPromise = aPromise;
    mPromise->AppendNativeHandler(this);
  }

private:
  ~PresentationResponderInfo()
  {
    Shutdown(NS_OK);
  }

  void Shutdown(nsresult aReason) override;

  nsresult InitTransportAndSendAnswer();

  nsRefPtr<PresentationResponderLoadingCallback> mLoadingCallback;
  nsCOMPtr<nsITimer> mTimer;
  nsCOMPtr<nsIPresentationChannelDescription> mRequesterDescription;
  nsRefPtr<Promise> mPromise;
};

} // namespace dom
} // namespace mozilla

#endif // mozilla_dom_PresentationSessionInfo_h