GitLabDropdown.prototype.renderItem = function()

in app/assets/javascripts/gl_dropdown.js [690:789]
82 lines of code
27 McCabe index (conditional complexity)

  GitLabDropdown.prototype.renderItem = function(data, group, index) {
    var field, html, selected, text, url, value, rowHidden;

    if (!this.options.renderRow) {
      value = this.options.id ? this.options.id(data) : data.id;

      if (value) {
        value = value.toString().replace(/'/g, "\\'");
      }
    }

    // Hide element
    if (this.options.hideRow && this.options.hideRow(value)) {
      rowHidden = true;
    }
    if (group == null) {
      group = false;
    }
    if (index == null) {
      // Render the row
      index = false;
    }
    html = document.createElement('li');

    if (rowHidden) {
      html.style.display = 'none';
    }

    if (data === 'divider' || data === 'separator') {
      html.className = data;
      return html;
    }
    // Header
    if (data.header != null) {
      html.className = 'dropdown-header';
      html.innerHTML = data.header;
      return html;
    }
    if (this.options.renderRow) {
      // Call the render function
      html = this.options.renderRow.call(this.options, data, this);
    } else {
      if (!selected) {
        const { fieldName } = this.options;

        if (value) {
          field = this.dropdown.parent().find(`input[name='${fieldName}'][value='${value}']`);
          if (field.length) {
            selected = true;
          }
        } else {
          field = this.dropdown.parent().find(`input[name='${fieldName}']`);
          selected = !field.length;
        }
      }
      // Set URL
      if (this.options.url != null) {
        url = this.options.url(data);
      } else {
        url = data.url != null ? data.url : '#';
      }
      // Set Text
      if (this.options.text != null) {
        text = this.options.text(data);
      } else {
        text = data.text != null ? data.text : '';
      }
      if (this.highlight) {
        text = data.template
          ? this.highlightTemplate(text, data.template)
          : this.highlightTextMatches(text, this.filterInput.val());
      }
      // Create the list item & the link
      var link = document.createElement('a');

      link.href = url;

      if (this.icon) {
        text = `<span>${text}</span>`;
        link.classList.add('d-flex', 'align-items-center');
        link.innerHTML = data.icon ? data.icon + text : text;
      } else if (this.highlight) {
        link.innerHTML = text;
      } else {
        link.textContent = text;
      }

      if (selected) {
        link.classList.add('is-active');
      }

      if (group) {
        link.dataset.group = group;
        link.dataset.index = index;
      }

      html.appendChild(link);
    }
    return html;
  };