{% comment %}
    A 'sequence' is a generalised structure that implements a collection of blocks that can be
    ordered, added and deleted.

    It provides the overall HTML structure, and the logic for updating hidden fields to reflect
    changes to the sequence, but NOT the UI controls for performing those changes: that is the
    responsibility of specific subtypes of 'sequence', such as list and stream.


    DO NOT PUT UI CONTROLS HERE, OR ANYTHING ELSE THAT ASSUMES A SPECIFIC VISUAL RENDERING OF THE LIST.
    (That belongs in templates that extend this one, such as list.html and stream.html.)


{% endcomment %}
<div class="sequence-container sequence-type-{% block sequence_type_class %}{% endblock %}">
    <input type="hidden" name="{{ prefix }}-count" id="{{ prefix }}-count" value="{{ list_members_html|length }}">

    {% block header %}{% endblock %}

    {% if block_errors %}
        {% for error in block_errors %}
            <div class="help-block help-critical">{{ error }}</div>
        {% endfor %}
    {% endif %}

    <div class="sequence-container-inner">
        <ul id="{{ prefix }}-list" class="sequence">
            {% for list_member_html in list_members_html %}
                {{ list_member_html }}
            {% endfor %}
        </ul>
        {% block footer %}{% endblock %}
    </div>
</div>