<optgroup label="{{ 'GANTRY5_PLATFORM_GLOBAL_DEFAULTS'|trans }}">
    <option value="default"
            {% if configuration == 'default' %}selected="selected"{% endif %}
            data-data="{{ {params: {navbar: true}, url: gantry.route('configurations/default', configuration_page|default('styles'))}|json_encode|e('html_attr') }}">
        {{ 'GANTRY5_PLATFORM_BASE_OUTLINE'|trans }}
    </option>
</optgroup>

{% set user_conf = gantry.outlines.user %}
{% if user_conf.count %}
    <optgroup label="{{ 'GANTRY5_PLATFORM_THEME_OUTLINES'|trans }}">
        {% for name, title in user_conf %}
            {% if name == configuration %}
                {% set selected_title = title %}
                {% set selected_value = name %}
            {% endif %}
            <option value="{{ name }}"
                    {% if name == configuration %}selected="selected"{% endif %}
                    data-data="{{ {params: {navbar: true}, url: gantry.route('configurations', name|e, configuration_page|default('layout'))}|json_encode|e('html_attr') }}"
            >
                {{ title }}
            </option>
        {% endfor %}
    </optgroup>
{% endif %}

{% set system_conf = gantry.outlines.system %}
{% if system_conf.count %}
    <optgroup label="{{ 'GANTRY5_PLATFORM_SYSTEM_OUTLINES'|trans }}">
        {% for name, title in system_conf %}
            {% if name == configuration %}
                {% set selected_title = title %}
                {% set selected_value = name %}
                {% set selected_editable = false %}
            {% endif %}
            <option value="{{ name }}"
                    {% if name == configuration %}selected="selected"{% endif %}
                    data-data="{{ {params: {navbar: true}, url: gantry.route('configurations', name|e, configuration_page|default('layout'))}|json_encode|e('html_attr') }}"
            >
                {{ title }}
            </option>
        {% endfor %}
    </optgroup>
{% endif %}