{# templates/djangocms_katex/formula.html #}

{% load sekizai_tags static %}
{% spaceless %}
    <{{ tag_type }} data-katex-rendered="false" data-options='{{ options }}'>{{ instance.katex }}
    </{{ tag_type }}>
{% endspaceless %}
{% addtoblock "css" %}<link rel="stylesheet" href="{% static "djangocms_katex/vendor/katex/katex.min.css" %}">{% endaddtoblock %}
{% addtoblock "js" %}<script defer src="{% static "djangocms_katex/vendor/katex/katex.min.js" %}"></script>{% endaddtoblock %}
{% if chem_eq %}
    {% addtoblock "js" %}<script defer src="{% static "djangocms_katex/vendor/katex/contrib/mhchem.min.js" %}"></script>{% endaddtoblock %}
{% endif %}
{% addtoblock "js" %}
  <script>
      window.djangocms_katex_macros = window.djangocms_katex_macros || {};
      (function () {
        function render()
        {
          for (const element of document.querySelectorAll('[data-katex-rendered="false"]')) {
              let options = JSON.parse(element.dataset.options);
              options.macros = djangocms_katex_macros;  // Persistent macros on a page
              try {
                  katex.render(element.textContent, element, options);
                  element.dataset.katexRendered = true;
              } catch (e) {
                  console.error(e);
              }
          };
        };
        document.addEventListener("DOMContentLoaded", render);
        {% if request.toolbar %}
            CMS.$(window).on('cms-content-refresh', render);
        {% endif %}
      })();
  </script>
{% endaddtoblock %}