third_party/WebKit/Source/core/html/track/VideoTrack.cpp

// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "core/html/track/VideoTrack.h"

#include "core/html/HTMLMediaElement.h"

namespace blink {

VideoTrack::VideoTrack(const String& id, const AtomicString& kind, const AtomicString& label, const AtomicString& language, bool selected)
    : TrackBase(WebMediaPlayer::VideoTrack, kind, label, language, id)
    , m_selected(selected)
{
}

VideoTrack::~VideoTrack()
{
}

DEFINE_TRACE(VideoTrack)
{
    TrackBase::trace(visitor);
}

void VideoTrack::setSelected(bool selected)
{
    if (selected == m_selected)
        return;

    m_selected = selected;

    if (mediaElement()) {
        WebMediaPlayer::TrackId selectedTrackId = id();
        mediaElement()->selectedVideoTrackChanged(selected ? &selectedTrackId : 0);
    }
}

const AtomicString& VideoTrack::alternativeKeyword()
{
    DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("alternative"));
    return keyword;
}

const AtomicString& VideoTrack::captionsKeyword()
{
    DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("captions"));
    return keyword;
}

const AtomicString& VideoTrack::mainKeyword()
{
    DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("main"));
    return keyword;
}

const AtomicString& VideoTrack::signKeyword()
{
    DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("sign"));
    return keyword;
}

const AtomicString& VideoTrack::subtitlesKeyword()
{
    DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("subtitles"));
    return keyword;
}

const AtomicString& VideoTrack::commentaryKeyword()
{
    DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("commentary"));
    return keyword;
}

bool VideoTrack::isValidKindKeyword(const String& kind)
{
    return kind == alternativeKeyword()
        || kind == captionsKeyword()
        || kind == mainKeyword()
        || kind == signKeyword()
        || kind == subtitlesKeyword()
        || kind == commentaryKeyword()
        || kind == emptyAtom;
}

} // namespace blink