code: function(key, value) {
            if (!_chrome) return;
  
            switch(key) {
              case 'nameDisplayMode':
                _chrome.name.setDisplayMode(value);
                _chrome.backingBar.setNameMode(value);
                break;
  
              case 'showArchiveStatus':
                logAnalyticsEvent('showArchiveStatus', 'styleChange', {mode: value ? 'on': 'off'});
                _chrome.archive.setShowArchiveStatus(value);
                break;
  
              case 'buttonDisplayMode':
                _chrome.muteButton.setDisplayMode(value);
                _chrome.backingBar.setMuteMode(value);
                break;
  
              case 'audioLevelDisplayMode':
                _chrome.audioLevel.setDisplayMode(value);
                break;
  
              case 'backgroundImageURI':
                _widgetView.setBackgroundImageURI(value);
            }
          }
docs: / Private Methods