at_theme-1.4.1/at_core/templates/misc/status-messages.html.twig

{#
/**
 * @file
 * Theme override for status messages.
 *
 * Displays status, error, and warning messages, grouped by type.
 *
 * An invisible heading identifies the messages for assistive technology.
 * Sighted users see a colored box. See http://www.w3.org/TR/WCAG-TECHS/H69.html
 * for info.
 *
 * Add an ARIA label to the contentinfo area so that assistive technology
 * user agents will better describe this landmark.
 *
 * Available variables:
 * - message_list: List of messages to be displayed, grouped by type.
 * - status_headings: List of all status types.
 * - display: (optional) May have a value of 'status' or 'error' when only
 *   displaying messages of that specific type.
 * - attributes: HTML attributes for the element, including:
 *   - class: HTML classes.
 *
 * @see template_preprocess_status_messages()
 */
#}
{% block messages %}
  {%- for type, messages in message_list -%}
    {%- set classes = ['messages', 'messages--' ~ type] -%}
    <div role="status" aria-label="{{- status_headings[type] -}}"{{ attributes.addClass(classes)|without('role', 'aria-label') }}>
      <div class="messages__container"{% if type == 'error' %} role="alert"{% endif %}>

        {%- if status_headings[type] -%}
          <h2 class="visually-hidden">{{- status_headings[type] -}}</h2>
        {%- endif -%}

        <span class="icon icon-{{- type -}}" aria-hidden="true"></span>

        {%- if messages|length > 1 -%}
          <ul class="messages__list">
            {%- for message in messages -%}
              <li class="messages__item">{{- message -}}</li>
            {%- endfor -%}
          </ul>
        {%- else -%}
          <div class="messages__list">{{- messages|first -}}</div>
        {%- endif -%}

      </div>
    </div>
    {# Remove type specific classes. #}
    {%- set attributes = attributes.removeClass(classes) -%}
  {%- endfor -%}
{% endblock messages %}