basecoat/docs/_includes/components/popover.njk

{% macro popover(
  id=None,
  trigger=None,
  main_attrs=None,
  trigger_attrs=None,
  content_attrs=None,
  include_html=true,
  include_script=true,
  register_on=["alpine:init"]
) %}
{% if include_script %}
<script>
  if (!window._popoverComponentLoaded) {
    window._popoverComponentLoaded = true;

    const registerPopoverComponent = () => {
      Alpine.data('popover', () => ({
        open: false,

        $trigger: {
          '@click'() { this.open = !this.open },
          '@keydown.escape.prevent'() {
            this.open = false;
            this.$refs.trigger.focus();
          },
          ':aria-expanded'() { return this.open },
          'x-ref': 'trigger'
        },
        $content: {
          '@keydown.escape.prevent'() {
            this.open = false;
            this.$refs.trigger.focus();
          },
          ':aria-hidden'() { return !this.open },
          'x-cloak': ''
        },
      }));
    }

    {% for event in register_on %}
      document.addEventListener('{{ event }}', registerPopoverComponent);
    {% endfor %}
  }
</script>
{% endif %}

{% if include_html %}
<div
  class="popover {{ main_attrs.class }}"
  x-data="popover"
  @click.away="open = false"
  {% if id %}id="{{ id }}"{% endif %}
  {% for key, value in main_attrs %}
    {% if key != 'class' %}{{ key }}="{{ value }}"{% endif %}
  {% endfor %}
>
  {% if trigger %}
  <button
    type="button"
    aria-haspopup="menu"
    aria-expanded="false"
    x-bind="$trigger"
    {% if id %}
    id="{{ id }}-trigger"
    aria-controls="{{ id }}-menu"
    {% endif %}
    {% for key, value in trigger_attrs %}
      {{ key }}="{{ value }}"
    {% endfor %}
  >
    {{ trigger | safe }}
  </button>
  {% endif %}
  <div
    data-popover
    aria-hidden="true"
    x-bind="$content"
    {% if id %}id="{{ id }}-menu"{% endif %}
    {% for key, value in content_attrs %}
      {{ key }}="{{ value }}"
    {% endfor %}
  >
    {% if caller %}{{ caller() }}{% endif %}
  </div>
</div>
{% endif %}
{% endmacro %}