discourse/app/assets/javascripts/admin/addon/templates/components/admin-editable-field.hbs

<div class="field">{{i18n this.name}}</div>
<div class="value">
  {{#if this.editing}}
    <TextField @value={{this.buffer}} @autofocus="autofocus" @autocomplete="off" />
  {{else}}
    <a href {{action "edit"}} class="inline-editable-field">
      <span>{{this.value}}</span>
    </a>
  {{/if}}
</div>
<div class="controls">
  {{#if this.editing}}
    <DButton @class="btn-default" @action={{action "save"}} @label="admin.user_fields.save" />
    <a href {{action "edit"}}>{{i18n "cancel"}}</a>
  {{else}}
    <DButton @class="btn-default" @action={{action "edit"}} @icon="pencil-alt" />
  {{/if}}
</div>