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68 lines
2.1 KiB
68 lines
2.1 KiB
{# |
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/** |
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* @file |
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* Theme override to display a book tree. |
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* |
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* Returns HTML for a wrapper for a book sub-tree. |
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* |
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* Available variables: |
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* - items: A nested list of book items. Each book item contains: |
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* - attributes: HTML attributes for the book item. |
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* - below: The book item child items. |
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* - title: The book link title. |
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* - url: The book link URL, instance of \Drupal\Core\Url. |
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* - is_expanded: TRUE if the link has visible children within the current |
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* book tree. |
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* - is_collapsed: TRUE if the link has children within the current book tree |
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* that are not currently visible. |
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* - in_active_trail: TRUE if the link is in the active trail. |
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*/ |
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#} |
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{% import _self as book_tree %} |
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{# |
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We call a macro which calls itself to render the full tree. |
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@see https://twig.symfony.com/doc/3.x/tags/macro.html |
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#} |
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{{ book_tree.book_links(items, attributes, 0) }} |
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{% macro book_links(items, attributes, menu_level) %} |
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{% import _self as book_tree %} |
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{% if items %} |
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{% if menu_level == 0 %} |
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<ul{{ attributes.addClass('book-navigation__menu menu', 'menu--level-' ~ (menu_level + 1)) }}> |
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{% else %} |
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<ul class='menu menu--level-{{ menu_level + 1 }}'> |
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{% endif %} |
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{% for item in items %} |
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{% |
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set item_classes = [ |
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'book-navigation__item', |
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'menu__item--level-' ~ (menu_level + 1), |
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item.is_expanded ? 'menu__item--expanded', |
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item.is_collapsed ? 'menu__item--collapsed', |
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item.in_active_trail ? 'menu__item--active-trail', |
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] |
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%} |
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{% set link_classes = [ |
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'book-navigation__link', |
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'menu__link', |
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'menu__link--link', |
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'menu__link--level-' ~ (menu_level + 1), |
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item.in_active_trail ? 'menu__link--active-trail', |
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item.below ? 'menu__link--has-children', |
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] |
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%} |
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<li{{ item.attributes.addClass(item_classes) }}> |
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{{ link(item.title, item.url, { |
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'class': link_classes |
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}) |
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}} |
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{% if item.below %} |
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{{ book_tree.book_links(item.below, attributes, menu_level + 1) }} |
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{% endif %} |
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</li> |
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{% endfor %} |
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</ul> |
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{% endif %} |
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{% endmacro %}
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