{# Forms macros for rendering forms and fields and stuff in templates. #}

{% macro hidden_fields(form) -%}
  <input type="hidden" name="{{ csrf_id }}" value="{{ csrf_token }}">
  {% for field in form.hidden_fields() %}
  <input type="hidden" name="{{ field.html_name }}" value="{{ field.value() }}">
  {% endfor %}
{%- endmacro %}

{% macro row(_field, label=None, help_text=None, width=9, attrs=None) -%}
  <div id="{{ field.html_name }}-control-group" class="control-group{% if _field.errors %} error{% endif %}">
    <label class="control-label" for="id_{{ field.html_name }}">{% if label %}{{ label }}{% elif _field.label %}{{ _field.label }}{% else %}{{ _field.html_name }}{% endif %}</label>
    <div class="controls">
      {% if attrs == None %}{% set attrs = {} %}{% endif %}
      {% if _field.field.widget.__class__.__name__ == 'CheckboxInput' %}
        <label class="checkbox">
          {{ field(_field, width=width, attrs=attrs)|trim }}
          {% if 'inline' in attrs %}
          {{ attrs.inline }}
          {% else %}
          {% if help_text %}
          {{ help_text }}
          {% elif _field.help_text %}
          {{ _field.help_text }}
          {% endif %}
          {% endif %}
        </label>
      {% else %}
        {{ field(_field, width=width, attrs=attrs)|trim }}
        {% endif %}
        {% for error in _field.errors %}
        <p class="help-block" style="font-weight: bold;">{{ error }}</p>
        {% endfor %}
        {% if 'inline' in attrs or _field.field.widget.__class__.__name__ != 'CheckboxInput' %}
        {% if help_text %}
        <p class="help-block">{{ help_text }}</p>
        {% elif _field.help_text %}
        <p class="help-block">{{ _field.help_text }}</p>
        {% endif %}
      {% endif %}
    </div>
  </div>
{%- endmacro %}

{% macro field(_field, attrs=None, width=9) -%}
{% set widget = _field.field.widget.__class__.__name__ %}
{% set context = _field.field.widget.get_context(_field.html_name, _field.value(), attrs=attrs) %}
{% if not 'class' in context['attrs'] and not widget == 'CheckboxInput' %}
{% do context['attrs'].update({'class': ('span' ~ width)}) %}
{% endif %}
{% if 'inline' in context.attrs %}{% do context.attrs.pop('inline') %}{% endif %}
{% if widget == 'Textarea' %}
{{ _textarea(_field, context) }}
{% elif widget == 'Select' %}
{{ _select(_field, context) }}
{% else %}
{{ _input(_field, context) }}
{% endif %}
{%- endmacro %}

{% macro attributes(attrs) -%}
{% for name, value in attrs.items() %} {{ name }}{% if value != True %}="{{ value }}"{% endif %}{% endfor %}
{%- endmacro %}

{% macro _input(_field, context) -%}
<input type="{{ context.type }}" id="id_{{ context.name }}" name="{{ context.name }}" {{ attributes(context.attrs)|trim }}{% if 'value' in context and context.value|length > 0 %} value="{{ context.value }}"{% endif %}>
{%- endmacro %}

{% macro _textarea(_field, context) -%}
<textarea id="id_{{ context.name }}" name="{{ context.name }}" {{ attributes(context.attrs)|trim }}>{% if 'value' in context and context.value|length > 0 %}{{ context.value }}{% endif %}</textarea>
{%- endmacro %}

{% macro _select(_field, context) -%}
<select id="id_{{ context.name }}" name="{{ context.name }}" {{ attributes(context.attrs)|trim }}>
  {% if context['optgroups']|length > 1 %}
  {% for optgroup in context['optgroups'] %}
  <optgroup label="{{ optgroup[0] }}">
    {% for option in optgroup[1] %}
    <option value="{{ option[0] }}"{% if 'value' in context and option[0] in context.value %} selected="selected"{% endif %}>{{ option[1] }}</option>
    {% endfor %}
  </optgroup>
  {% endfor %}
  {% else %}
  {% for option in context['optgroups'][0][1] %}
  <option value="{{ option[0] }}"{% if 'value' in context and option[0] in context.value %} selected="selected"{% endif %}>{{ option[1] }}</option>
  {% endfor %}
  {% endif %}
</select>
{%- endmacro %}