Method: Menu#start

Defined in:
lib/mdisc/menu.rb

#start ⇒ Object 



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# File 'lib/mdisc/menu.rb', line 52

def start
  check_player
  read_data

  ui.build_menu(@datatype, @title, @datalist, @offset, @index, @step)
  @stack.push [@datatype, @title, @datalist, @offset, @index, @step]

  loop do
    datatype = @datatype
    title = @title
    datalist = @datalist
    offset = @offset
    idx = index = @index
    step = @step
    stack = @stack
    key = screen.getch
    screen.refresh

    case key

    # Quit
    when 'q'
      break

    # Up
    when 'k'
      @index = @carousel[@offset, [datalist.size, offset+step].min - 1, idx - 1]

    # Down
    when 'j'
      @index = @carousel[@offset, [datalist.size, offset+step].min - 1, idx + 1]

    # Previous page
    when 'u'
      next if offset == 0
      @offset = @offset - step
      @index = (index - step).divmod(step)[0] * step

    # Next page
    when 'd'
      next if offset + step >= datalist.size
      @offset = @offset + step
      @index = (index + step).divmod(step)[0] * step

    # If highlighted item is a menu or playlists, just enter it.
    # If highlighted item is a song or an dj channel, just play it.
    when 'l'
      next if @datatype == 'help'
      if @datatype == 'songs' || @datatype == 'djchannels'
        player.play(@datatype, datalist, @index, true)
        @present_songs = [datatype, title, datalist, offset, index]
      else
        ui.build_loading
        dispatch_enter idx
        @index = 0
        @offset = 0
      end

    # Back
    when 'h'
      next if @stack.size == 1
      up = stack.pop
      @datatype, @title, @datalist, @offset, @index = up[0], up[1], up[2], up[3], up[4]

    # Search
    when 'f'
      search

    # Next song
    when ']'
      player.next
      sleep WAIT_TIME

    # Previous song
    when '['
      player.prev
      sleep WAIT_TIME

    # Play or pause a song.
    when ' '
      player.play(datatype, datalist, idx)
      sleep WAIT_TIME

    # Load present playlist.
    when 'p'
      next if @present_songs.empty?
      @stack.push [datatype, title, datalist, offset, index]
      @datatype, @title, @datalist, @offset, @index = @present_songs[0], @present_songs[1], @present_songs[2], @present_songs[3], @present_songs[4]

    # Star a song, a playlist or an album.
    when 's'
      next if datalist.empty?
      if datatype == 'songs'
        @collection.push(datalist[idx]).uniq!
      elsif datatype == 'playlists'
        @playlists.push(datalist[idx]).uniq!
      elsif datatype == 'albums'
        @albums.push(datalist[idx]).uniq!
      elsif datatype == 'djchannels'
        @djs.push(datalist[idx]).uniq!
      end

    # Load favorite playlists.
    when 't'
      @stack.push [datatype, title, datalist, offset, index]
      @datatype = 'playlists'
      @title = '网易云音乐 > 收藏精选歌单'
      @datalist = @playlists
      @offset = 0
      @index = 0

    # Load favorite songs.
    when 'c'
      @stack.push [datatype, title, datalist, offset, index]
      @datatype = 'songs'
      @title = '网易云音乐 > 收藏歌曲列表'
      @datalist = @collection
      @offset = 0
      @index = 0

    # Load favorite albums.
    when 'a'
      @stack.push [datatype, title, datalist, offset, index]
      @datatype = 'albums'
      @title = '网易云音乐 > 收藏专辑'
      @datalist = @albums
      @offset = 0
      @index = 0

    # Load favorite dj channels.
    when 'z'
      @stack.push [datatype, title, datalist, offset, index]
      @datatype = 'djchannels'
      @title = '网易云音乐 > 收藏 DJ 节目'
      @datalist = @djs
      @offset = 0
      @index = 0

    # Remove an entry from the present list.
    when 'r'
      next if datatype == 'main' || datalist.empty?
      @datalist.delete_at idx
      @index = @carousel[@offset, [datalist.size, offset+step].min - 1, idx]

    # Main menu
    when 'm'
      next if datatype == 'main'
      @stack.push [datatype, title, datalist, offset, index]
      @datatype, @title, @datalist = @stack[0][0], @stack[0][1], @stack[0][2]
      @offset = 0
      @index = 0

    end

    write_data
    ui.build_menu(@datatype, @title, @datalist, @offset, @index, @step)
  end

  player.stop
  exit
end