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      1 /*
      2  * Copyright (C) 2014 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  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY GOOGLE INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL GOOGLE INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #include "config.h"
     27 
     28 #include "modules/mediastream/MediaDevicesRequest.h"
     29 
     30 #include "bindings/v8/ExceptionState.h"
     31 #include "core/dom/Document.h"
     32 #include "modules/mediastream/UserMediaController.h"
     33 
     34 namespace WebCore {
     35 
     36 PassRefPtrWillBeRawPtr<MediaDevicesRequest> MediaDevicesRequest::create(ExecutionContext* context, UserMediaController* controller, PassOwnPtr<MediaDeviceInfoCallback> callback, ExceptionState& exceptionState)
     37 {
     38     RefPtrWillBeRawPtr<MediaDevicesRequest> request = adoptRefWillBeRefCountedGarbageCollected(new MediaDevicesRequest(context, controller, callback));
     39     request->suspendIfNeeded();
     40     return request.release();
     41 }
     42 
     43 MediaDevicesRequest::MediaDevicesRequest(ExecutionContext* context, UserMediaController* controller, PassOwnPtr<MediaDeviceInfoCallback> callback)
     44     : ActiveDOMObject(context)
     45     , m_controller(controller)
     46     , m_callback(callback)
     47 {
     48 }
     49 
     50 MediaDevicesRequest::~MediaDevicesRequest()
     51 {
     52 }
     53 
     54 Document* MediaDevicesRequest::ownerDocument()
     55 {
     56     if (ExecutionContext* context = executionContext()) {
     57         return toDocument(context);
     58     }
     59 
     60     return 0;
     61 }
     62 
     63 void MediaDevicesRequest::start()
     64 {
     65     if (m_controller)
     66         m_controller->requestMediaDevices(this);
     67 }
     68 
     69 void MediaDevicesRequest::succeed(const MediaDeviceInfoVector& mediaDevices)
     70 {
     71     if (!executionContext() || !m_callback)
     72         return;
     73 
     74     m_callback->handleEvent(mediaDevices);
     75 }
     76 
     77 void MediaDevicesRequest::stop()
     78 {
     79     m_callback.clear();
     80     m_controller = 0;
     81 }
     82 
     83 } // namespace WebCore
     84