.-.-.-.-.-

{% set containerAttributes = {
    class: ['pane-tabs']|merge((class ?? [])|explodeClass),
}|merge(containerAttributes ?? [], recursive=true) %}

{% set selectedTab = selectedTab ?? tabs|keys|first %}
{% set tablistLabel = tablistLabel ?? 'Primary fields'|t('app') %}
{% set tabs = tabs|map((tab, tabId) => tab|merge({
    selected: tabId == selectedTab,
        class: (tab.class ?? [])|explodeClass,
})) %}

{% tag 'div' with containerAttributes %}
    {% set tabsHaveErrors = false %}
    {% tag 'div'  with {
        class: 'scrollable',
        role: 'tablist',
        aria: {
            label: tablistLabel,
        },
    } %}
        {% for containerId, tab in tabs %}
            {% tag 'a' with {
                id: tab.tabId ?? "tab-#{containerId}",
                class: (tab.selected ? ['sel'] : [])|merge(tab.class),
                tabindex: tab.selected ? '0' : '-1',
                href: tab.url,
                role: 'tab',
                data: {
                    id: containerId,
                },
                aria: {
                    controls: containerId,
                    selected: tab.selected ? 'true' : 'false',
                },
            } %}
                {% tag 'span' with {
                    class: 'tab-label',
                } %}
                    {{ tab.label }}
                    {% if 'error' in tab.class %}
                        {% tag 'span' with {
                            data: {
                                icon: 'alert',
                            },
                        } %}
                            {{ tag('span', {
                                text: 'This tab contains errors'|t('app'),
                                class: 'visually-hidden',
                            }) }}
                        {% endtag %}
                        {% set tabsHaveErrors = true %}
                    {% endif %}
                {% endtag %}
            {% endtag %}
        {% endfor %}
    {%  endtag %}
    {% tag 'button' with {
        type: 'button',
        class: 'btn menubtn hidden' ~ (tabsHaveErrors ? ' error' : ''),
        title: 'List all tabs'|t('app'),
        aria: {
            label: 'List all tabs'|t('app'),
        },
    } %}
        {%- apply spaceless %}
            {% if tabsHaveErrors %}
                {{ tag('span', {
                    data: {
                        icon: 'alert',
                    }
                }) }}
            {% endif %}
        {% endapply -%}
    {% endtag %}
    <div class="menu">
        <ul class="padded" role="listbox">
            {% for containerId, tab in tabs %}
                <li>
                    {% tag 'a' with {
                        class: (tab.selected ? 'sel' : null) ~ ('error' in tab.class ? ' error' : null),
                        href: tab.url,
                        data: {
                            id: containerId,
                        },
                    } %}
                        {{ tab.label }}
                        {% if 'error' in tab.class %}
                            {% tag 'span' with {
                                data: {
                                    icon: 'alert',
                                },
                            } %}
                                {{ tag('span', {
                                    text: 'This tab contains errors'|t('app'),
                                    class: 'visually-hidden',
                                }) }}
                            {% endtag %}
                        {% endif %}
                    {% endtag %}
                </li>
            {% endfor %}
        </ul>
    </div>
{% endtag %}

/srv/users/craft4/apps/craft4-newsite-space/vendor/craftcms/cms/src/./templates/_includes/tabs.twig