docs: function onBeforeShow() {
      var trigger = self.hc_.getAnchorElement();
      var ch = self.getChar_(trigger);
      if (ch) {
        self.zoomEl_.innerHTML = self.displayChar_(ch);
        self.unicodeEl_.innerHTML = goog.i18n.uChar.toHexString(ch);
        // Clear the character name since we don't want to show old data because
        // it is retrieved asynchronously and the DOM object is re-used
        self.charNameEl_.innerHTML = '';
        self.charNameFetcher_.getName(ch, function(charName) {
          if (charName) {
            self.charNameEl_.innerHTML = charName;
          }
        });
      }
    }