third_party/WebKit/Source/modules/peerconnection/RTCSessionDescriptionRequestImpl.cpp

/*
 * Copyright (C) 2012 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer
 *    in the documentation and/or other materials provided with the
 *    distribution.
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 *    may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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#include "modules/peerconnection/RTCSessionDescriptionRequestImpl.h"

#include "base/memory/scoped_refptr.h"
#include "core/dom/DOMException.h"
#include "core/dom/ExceptionCode.h"
#include "modules/peerconnection/RTCPeerConnection.h"
#include "modules/peerconnection/RTCPeerConnectionErrorCallback.h"
#include "modules/peerconnection/RTCSessionDescription.h"
#include "modules/peerconnection/RTCSessionDescriptionCallback.h"
#include "public/platform/WebRTCSessionDescription.h"

namespace blink {

RTCSessionDescriptionRequestImpl* RTCSessionDescriptionRequestImpl::Create(
    ExecutionContext* context,
    RTCPeerConnection* requester,
    RTCSessionDescriptionCallback* success_callback,
    RTCPeerConnectionErrorCallback* error_callback) {
  return new RTCSessionDescriptionRequestImpl(context, requester,
                                              success_callback, error_callback);
}

RTCSessionDescriptionRequestImpl::RTCSessionDescriptionRequestImpl(
    ExecutionContext* context,
    RTCPeerConnection* requester,
    RTCSessionDescriptionCallback* success_callback,
    RTCPeerConnectionErrorCallback* error_callback)
    : ContextLifecycleObserver(context),
      success_callback_(success_callback),
      error_callback_(error_callback),
      requester_(requester) {
  DCHECK(requester_);
}

RTCSessionDescriptionRequestImpl::~RTCSessionDescriptionRequestImpl() {}

void RTCSessionDescriptionRequestImpl::RequestSucceeded(
    const WebRTCSessionDescription& web_session_description) {
  bool should_fire_callback =
      requester_ ? requester_->ShouldFireDefaultCallbacks() : false;
  if (should_fire_callback && success_callback_)
    success_callback_->handleEvent(
        RTCSessionDescription::Create(web_session_description));
  Clear();
}

void RTCSessionDescriptionRequestImpl::RequestFailed(const String& error) {
  bool should_fire_callback =
      requester_ ? requester_->ShouldFireDefaultCallbacks() : false;
  if (should_fire_callback && error_callback_)
    error_callback_->handleEvent(DOMException::Create(kOperationError, error));

  Clear();
}

void RTCSessionDescriptionRequestImpl::ContextDestroyed(ExecutionContext*) {
  Clear();
}

void RTCSessionDescriptionRequestImpl::Clear() {
  success_callback_.Clear();
  error_callback_.Clear();
  requester_.Clear();
}

void RTCSessionDescriptionRequestImpl::Trace(blink::Visitor* visitor) {
  visitor->Trace(success_callback_);
  visitor->Trace(error_callback_);
  visitor->Trace(requester_);
  RTCSessionDescriptionRequest::Trace(visitor);
  ContextLifecycleObserver::Trace(visitor);
}

}  // namespace blink