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      1 /*
      2  * Copyright (C) 2012 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer
     12  *    in the documentation and/or other materials provided with the
     13  *    distribution.
     14  * 3. Neither the name of Google Inc. nor the names of its contributors
     15  *    may be used to endorse or promote products derived from this
     16  *    software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include "config.h"
     32 
     33 #include "modules/mediastream/RTCSessionDescriptionRequestImpl.h"
     34 
     35 #include "modules/mediastream/RTCErrorCallback.h"
     36 #include "modules/mediastream/RTCPeerConnection.h"
     37 #include "modules/mediastream/RTCSessionDescription.h"
     38 #include "modules/mediastream/RTCSessionDescriptionCallback.h"
     39 #include "public/platform/WebRTCSessionDescription.h"
     40 #include "wtf/RefPtr.h"
     41 
     42 namespace blink {
     43 
     44 RTCSessionDescriptionRequestImpl* RTCSessionDescriptionRequestImpl::create(ExecutionContext* context, RTCPeerConnection* requester, RTCSessionDescriptionCallback* successCallback, RTCErrorCallback* errorCallback)
     45 {
     46     RTCSessionDescriptionRequestImpl* request = new RTCSessionDescriptionRequestImpl(context, requester, successCallback, errorCallback);
     47     request->suspendIfNeeded();
     48     return request;
     49 }
     50 
     51 RTCSessionDescriptionRequestImpl::RTCSessionDescriptionRequestImpl(ExecutionContext* context, RTCPeerConnection* requester, RTCSessionDescriptionCallback* successCallback, RTCErrorCallback* errorCallback)
     52     : ActiveDOMObject(context)
     53     , m_successCallback(successCallback)
     54     , m_errorCallback(errorCallback)
     55     , m_requester(requester)
     56 {
     57     ASSERT(m_requester);
     58 }
     59 
     60 RTCSessionDescriptionRequestImpl::~RTCSessionDescriptionRequestImpl()
     61 {
     62 }
     63 
     64 void RTCSessionDescriptionRequestImpl::requestSucceeded(const WebRTCSessionDescription& webSessionDescription)
     65 {
     66     bool shouldFireCallback = m_requester ? m_requester->shouldFireDefaultCallbacks() : false;
     67     if (shouldFireCallback && m_successCallback)
     68         m_successCallback->handleEvent(RTCSessionDescription::create(webSessionDescription));
     69     clear();
     70 }
     71 
     72 void RTCSessionDescriptionRequestImpl::requestFailed(const String& error)
     73 {
     74     bool shouldFireCallback = m_requester ? m_requester->shouldFireDefaultCallbacks() : false;
     75     if (shouldFireCallback && m_errorCallback)
     76         m_errorCallback->handleEvent(error);
     77 
     78     clear();
     79 }
     80 
     81 void RTCSessionDescriptionRequestImpl::stop()
     82 {
     83     clear();
     84 }
     85 
     86 void RTCSessionDescriptionRequestImpl::clear()
     87 {
     88     m_successCallback.clear();
     89     m_errorCallback.clear();
     90     m_requester.clear();
     91 }
     92 
     93 void RTCSessionDescriptionRequestImpl::trace(Visitor* visitor)
     94 {
     95     visitor->trace(m_successCallback);
     96     visitor->trace(m_errorCallback);
     97     visitor->trace(m_requester);
     98     RTCSessionDescriptionRequest::trace(visitor);
     99 }
    100 
    101 } // namespace blink
    102