src/third_party/WebKit/Source/core/html/track/VideoTrackList.cpp

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "config.h"
   6 #include "core/html/track/VideoTrackList.h"
   7
   8 #include "core/html/HTMLMediaElement.h"
   9 #include "core/html/track/VideoTrack.h"
  10
  11 namespace blink {
  12
  13 PassRefPtrWillBeRawPtr<VideoTrackList> VideoTrackList::create(HTMLMediaElement& mediaElement)
  14 {
  15     return adoptRefWillBeRefCountedGarbageCollected(new VideoTrackList(mediaElement));
  16 }
  17
  18 VideoTrackList::~VideoTrackList()
  19 {
  20 }
  21
  22 VideoTrackList::VideoTrackList(HTMLMediaElement& mediaElement)
  23     : TrackListBase<VideoTrack>(&mediaElement)
  24 {
  25     ScriptWrappable::init(this);
  26 }
  27
  28 const AtomicString& VideoTrackList::interfaceName() const
  29 {
  30     return EventTargetNames::VideoTrackList;
  31 }
  32
  33 int VideoTrackList::selectedIndex() const
  34 {
  35     for (unsigned i = 0; i < length(); ++i) {
  36         VideoTrack* track = anonymousIndexedGetter(i);
  37
  38         if (track->selected())
  39             return i;
  40     }
  41
  42     return -1;
  43 }
  44
  45 void VideoTrackList::trackSelected(blink::WebMediaPlayer::TrackId selectedTrackId)
  46 {
  47     // Clear the selected flag on the previously selected track, if any.
  48     for (unsigned i = 0; i < length(); ++i) {
  49         VideoTrack* track = anonymousIndexedGetter(i);
  50
  51         if (track->trackId() != selectedTrackId)
  52             track->clearSelected();
  53         else
  54             ASSERT(track->selected());
  55     }
  56
  57     scheduleChangeEvent();
  58 }
  59
  60 }