text: window.buttons = {
      attach: {
          extend: baseButton,
          background: 'rgba(0, 0, 0, 0.25)'
      },
      detach: {
          extend: baseButton,
          background: 'rgba(240, 0, 0, 0.25)'
      },
      source: {
          extend: baseButton,
          background: 'rgba(50, 100, 0, 0.25)'
      }
  }
  