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HTML

              
                <div id="app"></div>
              
            
!

CSS

              
                $spacing: 1.5rem;
$primary: #00ACC1;

#app {
  height: 100vh;
}

.wrapper {
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0 auto;
  max-width: 320px;
}

.player {
  overflow: hidden;
  max-width: 90%;
  max-height: 90vh;
  min-height: 487px;
  border-radius: 5px;
  background: white;
  box-shadow: 0 10px 20px rgba(0,0,0,0.19), 0 6px 6px rgba(0,0,0,0.23);
  
  &__bg {
    position: fixed;
    top: -40px;
    right: -40px;
    bottom: -40px;
    left: -40px;
    background-size: cover;
    background-position: center;
    filter: blur(20px);
    z-index: -2;
    
    &:after {
      content: "";
      position: absolute;
      top: -40px;
      right: -40px;
      bottom: -40px;
      left: -40px;
      background: rgba(#263238, 0.8);
      transition: background 1s;
      
      [class*="is-sliding"] & {
        background: rgba(#263238, 1);
      }
    }
    
    &.prev,
    &.next {
      opacity: 0;
      z-index: -1;
    }
  }
  
  &__head {
    padding: $spacing/2 $spacing;
  }
  
  &__art {
    position: relative;
    padding-bottom: 100%;
    width: 100%;
    border-bottom: 1px solid #ECEFF1;
    background: darken(#263238, 10%);

    .is-sliding-next & {
      transform: translate(-100%, 0);
      transition: transform 500ms ease-in-out;
    }
    
    .is-sliding-prev & {
      transform: translate(100%, 0);
      transition: transform 500ms ease-in-out;
    }
    
    > img {
      position: absolute;
      top: 0;
      left: 0;
      display: block;
      width: 100%;
      margin: 0 auto;
      
      &.prev {
        left: -100%;
      }
      
      &.next {
        left: 100%;
      }
    }
  }
  
  &__body {
    text-align: center;
    padding: $spacing;
    transition: all 250ms;
    
    [class*="is-sliding"] & {
      opacity: 0;
      transform: scale(0.95);
    }
    
    .title {
      position: relative;
      width: 100%;
      font-size: 1.2rem;
      white-space: nowrap;
    }
    
    .subtitle {
      font-size: 0.75rem;
      color: #90A4AE;
      padding-top: $spacing/4;
      margin-bottom: $spacing;
      text-transform: uppercase;
    }
  }
}

.timestamp {
  position: relative;
  width: 100%;
  height: $spacing;
  
  &__progress,
  &__current,
  &__total {
    position: absolute;
    top: 0;
    font-size: 0.75rem;
  }
  
  &__progress {
    position: relative;
    top: $spacing/4;
    left: 50%;
    height: $spacing/4;
    width: calc(100% - #{$spacing*3});
    transform: translate(-50%, 0);
    border-radius: 5px;
    overflow: hidden;
    background: #ECEFF1;
    
    > div {
      position: absolute;
      top: 0;
      left: 0;
      bottom: 0;
      background: $primary;
    }
  }
  
  &__current {
    left: 0;
  }
  
  &__total {
    right: 0;
  }
}

.controls {
  display: flex;
  justify-content: space-around;
  align-items: center;
  height: $spacing*2.5;
  text-align: center;
  background: $primary;
  
  .button {
    height: 100%;
    width: $spacing*2.5;
    border: 0;
    border-radius: 0;
    transition: background 250ms;
    box-shadow: none !important;
    background: transparent;
    color: white;
    
    &:hover {
      background: lighten($primary, 4%);
    }
    
    &.play {
      font-size: 1.6rem;
    }
    
    &.like.is-liked {
      background: #F06292;
    }
    
    .icon {
      //transition: transform 150ms;
    }
  }
}

.playlist {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  padding: $spacing;
  padding-right: $spacing*2;
  overflow: auto;
  background: #263238;
  
  &__item.media {
    align-items: center;
    border-top: 2px solid #37474F;
    
    &:first-child {
      border-top: 0;
    }
    
    .title,
    .subtitle {
      white-space: nowrap;
      max-width: 100%;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    
    .title {
      font-size: 0.85rem;
      color: #B0BEC5;
    }
    
    .subtitle {
      margin-top: -$spacing/2;
      font-size: 0.75rem;
      text-transform: uppercase;
      color: #607D8B
    }
  }
}

.toggle-playlist {
  position: absolute;
  top: $spacing/2;
  right: $spacing/2;
  border: 0;
  outline: 0;
  background: transparent;
  text-shadow: rgba(black, 0.75) 0 0 5px;
  box-shadow: none !important;
  color: white !important;
  z-index: 1;
  transition: all 500ms;
  
  [class*="is-sliding"] & {
    opacity: 0;
  }
}

.button {
  &:active {
    > .icon {
      transform: scale(0.85);
    }
  }
}
              
            
!

JS

              
                class Player extends React.Component {
  static get defaultProps() {
    return {
      tracks: [
        {
          name: "Somebody Hates Me",
          artist: "Reel Big Fish",
          album: "Why Do They Rock So Hard?",
          year: 1998,
          duration: 210,
          artwork: "https://is5-ssl.mzstatic.com/image/thumb/Music/59/db/b5/mzi.nloomwwj.jpg/268x0w.jpg"
        },
        {
          name: "Beer",
          artist: "Reel Big Fish",
          album: "We're Not Happy Til You're Not Happy",
          year: 2005,
          duration: 233,
          artwork: "https://upload.wikimedia.org/wikipedia/en/9/9d/Reel_Big_Fish_-_We%27re_Not_Happy_%27til_You%27re_Not_Happy_cover.jpg"
        },
        {
          name: "We Will Fall Together",
          artist: "Streetlight Manifesto",
          album: "Somewhere In The Between",
          year: 2007,
          duration: 289,
          artwork: "https://upload.wikimedia.org/wikipedia/en/9/95/Streetlight_Manifesto_-_Somewhere_in_the_Between.jpg"
        },
        {
          name: "Welcome To The Jungle",
          artist: "Guns N' Roses",
          album: "Appetite For Destruction",
          year: 1987,
          duration: 277,
          artwork: "https://upload.wikimedia.org/wikipedia/en/6/60/GunsnRosesAppetiteforDestructionalbumcover.jpg"
        },
        {
          name: "Estranged",
          artist: "Guns N' Roses",
          album: "Use Your Illusion II",
          year: 1991,
          duration: 563,
          artwork: "https://www.lifeofvinyl.com/images/super/0720642442012.jpg"
        },
        {
          name: "Cheer Up!",
          artist: "Reel Big Fish",
          album: "Cheer Up!",
          year: 2002,
          duration: 163,
          artwork: "https://upload.wikimedia.org/wikipedia/en/f/f9/Reel_Big_Fish_-_Cheer_Up%21_cover.jpg"
        }
      ]
    }
  }
  
  constructor(props, defaultProps) {
    super(props, defaultProps);
    
    this.state = {
      playStatus: 0,
      currentTrack: 0,
      nextTrack: 1,
      prevTrack: this.props.tracks.length-1,
      currentTime: 0,
      sliding: 0,
      likedTracks: [],
      viewMode: "player"
    }
    
    this.togglePlay = this.togglePlay.bind(this);
    this.toggleViewMode = this.toggleViewMode.bind(this);
    this.nextTrack = this.nextTrack.bind(this);
    this.prevTrack = this.prevTrack.bind(this);
    this.likeTrack = this.likeTrack.bind(this);
  }
  
  toggleViewMode() {
    let viewMode = "";
    switch(this.state.viewMode) {
      case "player":
        viewMode = "playlist";
        break;
      case "playlist":
        viewMode = "player"
        break;
    }
    
    this.setState({
      viewMode: viewMode
    });
  }
  
  togglePlay() {
    let status = this.state.playStatus;
    if (status == 0) {
      // Play
      status = 1;
      this.timer = setInterval(() => {
        this.setTime(this.state.currentTime + 1);
      }, 1000);
    } else {
      // Pause
      status = 0;
      clearInterval(this.timer);
    }
    this.setState({ playStatus: status });
  }
  
  changeTrack(track, dir) {
    if (this.state.sliding == 0) {
      let this_track = track;
      let next_track = track + 1;
      let prev_track = track - 1;

      if (next_track >= this.props.tracks.length) next_track = 0;   
      if (prev_track < 0) prev_track = this.props.tracks.length - 1;

      this.setState({
        sliding: dir
      });

      setTimeout(() => {
        this.setState({
          sliding: 0,
          currentTrack: this_track,
          nextTrack: next_track,
          prevTrack: prev_track,
          currentTime: 0
        });
      }, 500);
    }
  }
  
  nextTrack() {
    this.changeTrack(this.state.nextTrack, 1);
  }
  
  prevTrack() {
    if (this.state.currentTime < 2) {
      this.changeTrack(this.state.prevTrack, -1);
    } else {
      this.setState({
        currentTime: 0
      });
    }
  }
  
  likeTrack() {
    let likedTracks = this.state.likedTracks;
    let found = false;
    for (let i = 0; i < this.state.likedTracks.length; i++) {
      if (this.state.likedTracks[i] == this.state.currentTrack) {
        found = true;
        likedTracks.splice(i, 1);
        break;
      }
    }
    
    if (!found) {
      likedTracks.push(this.state.currentTrack);
    }
    
    this.setState({
      likedTracks: likedTracks
    });
  }
  
  setTime(time) {
    time = Math.floor(time);
    if (time > this.props.tracks[this.state.currentTrack].duration) {
      this.nextTrack();
    } else {
      this.setState({ currentTime: time });
    }
  }
  
  render() {
    const prevTrack = this.props.tracks[this.state.prevTrack];
    const currentTrack = this.props.tracks[this.state.currentTrack];
    const nextTrack = this.props.tracks[this.state.nextTrack];
    
    let sliding = "";
    switch (this.state.sliding) {
      case -1:
        sliding = "is-sliding-prev";
        break;
      case 1:
        sliding = "is-sliding-next";
        break;
    }
    
    let playlistIcon = "fa fa-fw ";
    if (this.state.viewMode == "playlist") {
      playlistIcon += "fa-times";
    } else {
      playlistIcon += "fa-bars";
    }
    
    let isLiked = false;
    for (let i = 0; i < this.state.likedTracks.length; i++) {
      if (this.state.likedTracks[i] == this.state.currentTrack) {
        isLiked = true;
      }
    }
    
    return (
      <div className="wrapper">
        <article className={["player", sliding].join(' ')}>
          <div className="player__bg prev" style={{ backgroundImage: 'url(' + prevTrack.artwork + ')' }}></div>
          <div className="player__bg" style={{ backgroundImage: 'url(' + currentTrack.artwork + ')' }}></div>
          <div className="player__bg next" style={{ backgroundImage: 'url(' + nextTrack.artwork + ')' }}></div>
          <section className="player__art">
            <img src={prevTrack.artwork} alt="" className="prev" />
            <img src={currentTrack.artwork} alt="" className="current" />
            <img src={nextTrack.artwork} alt="" className="next" />
            
            <button className="button toggle-playlist" onClick={this.toggleViewMode}>
              <span className="icon">
                <i className={playlistIcon}></i>
              </span>
            </button>
            
            <Playlist tracks={this.props.tracks} isVisible={this.state.viewMode == "playlist"} changeTrack={this.changeTrack} />
          </section>
          <section className="player__body">
            <p className="title">{currentTrack.name}</p>
            <p className="subtitle">{currentTrack.artist}</p>
            <Timestamp duration={currentTrack.duration} current={this.state.currentTime} />
          </section>
          <Controls isPlaying={this.state.playStatus} isLiked={isLiked} togglePlay={this.togglePlay} nextTrack={this.nextTrack} prevTrack={this.prevTrack} likeTrack={this.likeTrack} />
        </article>
      </div>
    );
  }
}

class Playlist extends React.Component {
  render() {
    const tracks = this.props.tracks;
    
    let isHidden = "";
    if (!this.props.isVisible) {
      isHidden = "is-hidden";
    }
    
    return(
      <ul className={["playlist", isHidden].join(' ')}>
        {tracks.map((track, i) => {
          return(
            <li key={i} className="playlist__item media" onClick={() => this.props.changeTrack(i)}>
              <div className="media-left">
                <p className="image is-48x48">
                  <img src={track.artwork} alt="" />
                </p>
              </div>
              <div className="media-content">
                <div className="content">
                  <p className="title">{track.name}</p>
                  <p className="subtitle">{track.artist}</p>
                </div>
              </div>
            </li>
          )
        })}
      </ul>
    );
  }
}

class Timestamp extends React.Component {
  convertTime(time) {
    let mins = Math.floor(time / 60);
    let seconds = time - (mins * 60);
    if (seconds < 10) {
      seconds = "0" + seconds;
    }
    time = mins + ":" + seconds;
    return time;
  }
  
  render() {
    return(
      <div className="timestamp">
        <div className="timestamp__current">
          {this.convertTime(this.props.current)}
        </div>
        <div className="timestamp__progress">
          <div style={{ width: Math.floor((this.props.current / this.props.duration) * 100) + "%" }}></div>
        </div>
        <div className="timestamp__total">
          {this.convertTime(this.props.duration - this.props.current)}
        </div>
      </div>
    );
  }
}

class Controls extends React.Component {
  render() {
    let playClass = "fa fa-fw ";
    if (!this.props.isPlaying) {
      playClass += "fa-play";
    } else {
      playClass += "fa-pause";
    }
    
    let likeClass = "button like ";
    let heartClass = "fa fa-fw ";
    if (!this.props.isLiked) {
      heartClass += "fa-heart-o";
    } else {
      likeClass += "is-liked";
      heartClass += "fa-heart";
    }
    
    return(
      <div className="controls">
        <button type="button" className="button repeat">
          <span className="icon">
            <i className="fa fa-fw fa-repeat"></i>
          </span>
        </button>
        <button type="button" className="button prev" onClick={this.props.prevTrack}>
          <span className="icon">
            <i className="fa fa-fw fa-step-backward"></i>
          </span>
        </button>
        <button type="button" className="button play" onClick={this.props.togglePlay}>
          <span className="icon">
            <i className={playClass}></i>
          </span>
        </button>
        <button type="button" className="button next" onClick={this.props.nextTrack}>
          <span className="icon">
            <i className="fa fa-fw fa-step-forward"></i>
          </span>
        </button>
        <button type="button" className={likeClass} onClick={this.props.likeTrack}>
          <span className="icon">
            <i className={heartClass}></i>
          </span>
        </button>
      </div>
    );
  }
}

ReactDOM.render(<Player />, document.getElementById("app"));
              
            
!
999px

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