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bootstrap_fieldgroup.module in Bootstrap fieldgroup 7

Module file for the bootstrap_fieldgroup module.

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bootstrap_fieldgroup.module
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<?php

// $Id$

/**
 * @file
 * Module file for the bootstrap_fieldgroup module.
 */

/**
 * Implements hook_ctools_plugin_api().
 */
function bootstrap_fieldgroup_ctools_plugin_api($module, $api) {
  if ($module == 'field_group' && $api == 'field_group') {
    return array(
      'version' => 1,
    );
  }
}

/**
 * Implements hook_theme().
 */
function bootstrap_fieldgroup_theme() {
  return array(
    'bootstrap_fieldgroup_nav' => array(
      'template' => 'templates/bootstrap-fieldgroup-nav',
      'variables' => array(
        'items' => array(),
        'group' => NULL,
      ),
    ),
    'bootstrap_fieldgroup_accordion' => array(
      'template' => 'templates/bootstrap-fieldgroup-accordion',
      'variables' => array(
        'items' => array(),
        'group' => NULL,
      ),
    ),
  );
}

/**
 * Implements hook_field_group_formatter_info().
 */
function bootstrap_fieldgroup_field_group_formatter_info() {
  $formatters = array();
  $formatters['bootstrap_fieldgroup_nav'] = array(
    'label' => t('Bootstrap nav: tabs/pills'),
    'description' => t('This fieldgroup renders child groups as Bootstrap nav tabs/pills'),
    'instance_settings' => array(
      'classes' => '',
      'bootstrap_nav_type' => 'tabs',
      'bootstrap_stacked' => 0,
      'bootstrap_orientation' => 0,
    ),
  );
  $formatters['bootstrap_fieldgroup_nav_item'] = array(
    'label' => t('Bootstrap nav: item'),
    'description' => t('This fieldgroup renders the content as a Bootstrap nav item'),
    'instance_settings' => array(
      'classes' => '',
    ),
  );
  $formatters['bootstrap_fieldgroup_accordion'] = array(
    'label' => t('Bootstrap Accordion group'),
    'description' => t('This fieldgroup renders child groups as Bootstrap Accordion.'),
    'instance_settings' => array(
      'classes' => '',
      'id' => '',
    ),
  );
  $formatters['bootstrap_fieldgroup_accordion_item'] = array(
    'label' => t('Bootstrap Accordion item'),
    'format_types' => array(
      'open',
      'closed',
    ),
    'description' => t('This fieldgroup renders the contentin a div, part of Bootstrap Accordion group.'),
    'default_formatter' => 'closed',
    'instance_settings' => array(
      'classes' => '',
    ),
  );
  $formatters['bootstrap_grid_row'] = array(
    'label' => t('Bootstrap Grid Row'),
    'description' => t('This fieldgroup renders a Bootstrap row that is meant to include Bootstrap columns as child groups. It can optionally render a heading (title and description) as a child column.'),
    'instance_settings' => array(
      'classes' => '',
      'show_heading' => 0,
      'heading_position' => 0,
      'label_element' => 'h3',
      'description_element' => 'p',
      'description' => '',
      'panelize' => 0,
      'bootstrap_grid_col_xs' => '',
      'bootstrap_grid_col_sm' => '',
      'bootstrap_grid_col_md' => '',
      'bootstrap_grid_col_lg' => '',
    ),
  );
  $formatters['bootstrap_grid_col'] = array(
    'label' => t('Bootstrap Grid Column'),
    'description' => t('This fieldgroup renders the content inside a Bootstrap column with the specified column classes. It can optionally wrap the fields inside a panel.'),
    'instance_settings' => array(
      'classes' => '',
      'panelize' => 0,
      'bootstrap_grid_col_xs' => '',
      'bootstrap_grid_col_sm' => '',
      'bootstrap_grid_col_md' => '',
      'bootstrap_grid_col_lg' => '',
    ),
  );
  foreach (array_keys($formatters) as $key) {
    $formatter =& $formatters[$key];
    $formatter['instance_settings']['required_fields'] = 1;
  }
  return array(
    'form' => $formatters,
    'display' => $formatters,
  );
}

/**
 * Implements hook_field_group_format_settings().
 * If the group has no format settings, default ones will be added.
 */
function bootstrap_fieldgroup_field_group_format_settings($group) {

  // Add a wrapper for extra settings to use by others.
  $form = array(
    'instance_settings' => array(),
  );
  $field_group_types = field_group_formatter_info();
  $mode = $group->mode == 'form' ? 'form' : 'display';
  $formatter = $field_group_types[$mode][$group->format_type];

  // Add optional instance_settings.
  switch ($group->format_type) {
    case 'bootstrap_fieldgroup_nav':
      $form['instance_settings']['bootstrap'] = array(
        '#tree' => TRUE,
      );
      $form['instance_settings']['bootstrap_nav_type'] = array(
        '#title' => t('Nav type'),
        '#type' => 'select',
        '#options' => array(
          'tabs' => 'Tabs',
          'pills' => 'Pills',
        ),
        '#default_value' => isset($group->format_settings['instance_settings']['bootstrap_nav_type']) ? $group->format_settings['instance_settings']['bootstrap_nav_type'] : $formatter['instance_settings']['bootstrap_nav_type'],
        '#weight' => 1,
        '#attributes' => array(
          'class' => array(
            'bootstrap-fieldgroup-nav-type',
          ),
        ),
      );
      $form['instance_settings']['bootstrap_stacked'] = array(
        '#title' => t('Stacked'),
        '#type' => 'select',
        '#options' => array(
          0 => t('No'),
          1 => t('Yes'),
        ),
        '#attributes' => array(
          'class' => array(
            'bootstrap-fieldgroup-stacked',
          ),
        ),
        '#default_value' => isset($group->format_settings['instance_settings']['bootstrap_stacked']) ? $group->format_settings['instance_settings']['bootstrap_stacked'] : $formatter['instance_settings']['bootstrap_stacked'],
        '#weight' => 1.5,
      );
      $form['instance_settings']['bootstrap_orientation'] = array(
        '#title' => t('Position the tabs/pills will appear'),
        '#type' => 'select',
        '#options' => array(
          0 => t('Top'),
          1 => t('Right'),
          2 => t('Bottom'),
          3 => t('Left'),
        ),
        '#attributes' => array(
          'class' => array(
            'bootstrap-fieldgroup-orientation',
          ),
        ),
        '#default_value' => isset($group->format_settings['instance_settings']['bootstrap_orientation']) ? $group->format_settings['instance_settings']['bootstrap_orientation'] : $formatter['instance_settings']['bootstrap_orientation'],
        '#weight' => 1.7,
      );
      break;
    case 'bootstrap_fieldgroup_accordion':
    case 'bootstrap_fieldgroup_accordion_item':

      // For now - not use any optional instance_settings.
      break;
    case 'bootstrap_grid_row':
      $form['instance_settings']['show_heading'] = array(
        '#title' => t('Show heading'),
        '#type' => 'select',
        '#options' => array(
          0 => t('No'),
          1 => t('Yes'),
        ),
        '#default_value' => isset($group->format_settings['instance_settings']['show_heading']) ? $group->format_settings['instance_settings']['show_heading'] : $formatter['instance_settings']['show_heading'],
        '#weight' => 1,
      );
      $form['instance_settings']['heading_position'] = array(
        '#title' => t('Heading Position'),
        '#type' => 'select',
        '#options' => array(
          0 => t('Left'),
          1 => t('Right'),
        ),
        '#default_value' => isset($group->format_settings['instance_settings']['heading_position']) ? $group->format_settings['instance_settings']['heading_position'] : $formatter['instance_settings']['heading_position'],
        '#weight' => 1,
      );
      $form['instance_settings']['label_element'] = array(
        '#title' => t('Label element'),
        '#type' => 'textfield',
        '#default_value' => isset($group->format_settings['instance_settings']['label_element']) ? $group->format_settings['instance_settings']['label_element'] : $formatter['instance_settings']['label_element'],
        '#weight' => 1,
      );
      $form['instance_settings']['description_element'] = array(
        '#title' => t('Description element'),
        '#type' => 'textfield',
        '#default_value' => isset($group->format_settings['instance_settings']['description_element']) ? $group->format_settings['instance_settings']['description_element'] : $formatter['instance_settings']['description_element'],
        '#weight' => 1,
      );
      $form['instance_settings']['panelize'] = array(
        '#title' => t('Embed in a panel'),
        '#type' => 'select',
        '#options' => array(
          0 => t('No'),
          1 => t('Yes'),
        ),
        '#default_value' => isset($group->format_settings['instance_settings']['panelize']) ? $group->format_settings['instance_settings']['panelize'] : $formatter['instance_settings']['panelize'],
        '#weight' => 1,
      );
      $form['instance_settings']['bootstrap_grid_col_xs'] = _bootstrap_fieldgroup_grid_col_format_settings('xs', $group, $formatter, true);
      $form['instance_settings']['bootstrap_grid_col_sm'] = _bootstrap_fieldgroup_grid_col_format_settings('sm', $group, $formatter, true);
      $form['instance_settings']['bootstrap_grid_col_md'] = _bootstrap_fieldgroup_grid_col_format_settings('md', $group, $formatter, true);
      $form['instance_settings']['bootstrap_grid_col_lg'] = _bootstrap_fieldgroup_grid_col_format_settings('lg', $group, $formatter, true);
      break;
    case 'bootstrap_grid_col':
      $form['instance_settings']['panelize'] = array(
        '#title' => t('Embed in a panel'),
        '#type' => 'select',
        '#options' => array(
          0 => t('No'),
          1 => t('Yes'),
        ),
        '#default_value' => isset($group->format_settings['instance_settings']['panelize']) ? $group->format_settings['instance_settings']['panelize'] : $formatter['instance_settings']['panelize'],
        '#weight' => 1,
      );
      $form['instance_settings']['bootstrap_grid_col_xs'] = _bootstrap_fieldgroup_grid_col_format_settings('xs', $group, $formatter);
      $form['instance_settings']['bootstrap_grid_col_sm'] = _bootstrap_fieldgroup_grid_col_format_settings('sm', $group, $formatter);
      $form['instance_settings']['bootstrap_grid_col_md'] = _bootstrap_fieldgroup_grid_col_format_settings('md', $group, $formatter);
      $form['instance_settings']['bootstrap_grid_col_lg'] = _bootstrap_fieldgroup_grid_col_format_settings('lg', $group, $formatter);
      break;
    default:
  }
  return $form;
}

/**
 * Implements field_group_pre_render_<format-type>.
 * Format type: Bootstrap Accordion.
 *
 * @param $element The field group form element.
 * @param $group The Field group object prepared for pre_render.
 * @param $form The root element or form.
 */
function field_group_pre_render_bootstrap_fieldgroup_accordion(&$element, $group, &$form) {
  $element += array(
    '#type' => 'bootstrap_fieldgroup_accordion',
    '#theme' => 'bootstrap_fieldgroup_accordion',
    '#description' => $group->description,
    '#parents' => array(
      $group->parent_name,
    ),
    '#attached' => array(
      'js' => array(
        drupal_get_path('module', 'bootstrap_fieldgroup') . '/bootstrap_fieldgroup.js',
      ),
    ),
  );
}

/**
 * Implements field_group_pre_render_<format-type>.
 * Format type: Bootstrap Accordion item.
 *
 * @param $element The field group form element.
 * @param $group The Field group object prepared for pre_render.
 * @param $form The root element or form.
 */
function field_group_pre_render_bootstrap_fieldgroup_accordion_item(&$element, $group, &$form) {
  $element += array(
    '#type' => 'bootstrap_fieldgroup_accordion_item',
    '#title' => check_plain(t($group->label)),
    '#description' => $group->description,
    '#weight' => $group->weight,
    '#parents' => array(
      $group->parent_name,
    ),
  );
}

/**
 * Implements hook_field_group_pre_render().
 */
function bootstrap_fieldgroup_field_group_pre_render(&$element, $group, &$form) {
  $element['#group'] = $group;
  switch ($group->format_type) {
    case 'bootstrap_fieldgroup_accordion':
    case 'bootstrap_fieldgroup_nav':
      $items = array();
      foreach ($group->children as $group_name) {
        $items[$group_name] =& $element[$group_name];
      }
      $element['#items'] = $items;
      break;
    default:
  }
}

/**
 * Implements field_group_pre_render_<format-type>.
 * Format type: Bootstrap nav tabs/pills.
 */
function field_group_pre_render_bootstrap_fieldgroup_nav(&$element, $group, &$form) {
  $element += array(
    '#type' => 'bootstrap_fieldgroup_nav',
    '#theme' => 'bootstrap_fieldgroup_nav',
    '#description' => $group->description,
    '#parents' => array(
      $group->parent_name,
    ),
    '#attached' => array(
      'js' => array(
        drupal_get_path('module', 'bootstrap_fieldgroup') . '/bootstrap_fieldgroup.js',
      ),
    ),
  );
}

/**
 * Implements field_group_pre_render_<format-type>.
 * Format type: Bootstrap nav item.
 */
function field_group_pre_render_bootstrap_fieldgroup_nav_item(&$element, $group, &$form) {
  $element += array(
    '#type' => 'bootstrap_fieldgroup_nav_item',
    '#title' => check_plain(t($group->label)),
    '#description' => $group->description,
    '#weight' => $group->weight,
    '#parents' => array(
      $group->parent_name,
    ),
  );
}

/**
 * Implements template_preprocess_bootstrap_tabs().
 * @param $variables
 */
function template_preprocess_bootstrap_fieldgroup_nav(&$variables) {
  $group =& $variables['group'];
  $variables['wrapper_classes'] = $variables['group']->classes;
  $variables['wrapper_classes'] .= ' bootstrap-nav-wrapper';
  $variables['flip'] = FALSE;
  if ($group->format_settings['instance_settings']['bootstrap_orientation']) {
    switch ($group->format_settings['instance_settings']['bootstrap_orientation']) {
      case 1:
        $variables['wrapper_classes'] .= ' tabs-right';
        break;
      case 2:
        $variables['wrapper_classes'] .= ' tabs-below';
        $variables['flip'] = TRUE;
        break;
      case 3:
        $variables['wrapper_classes'] .= ' tabs-left';
        break;
      default:
    }
  }
  $variables['nav_classes'] = $variables['group']->classes;
  switch ($group->format_settings['instance_settings']['bootstrap_nav_type']) {
    case 'tabs':
      $variables['nav_classes'] .= ' nav-tabs';
      break;
    case 'pills':
      $variables['nav_classes'] .= ' nav-pills';
      break;
    default:
  }
  if ($group->format_settings['instance_settings']['bootstrap_stacked']) {
    $variables['nav_classes'] .= ' nav-stacked';
  }
  $variables['pane_classes'] = $variables['group']->classes;
  uasort($variables['items'], 'element_sort');
  foreach ($variables['items'] as $key => $item) {

    // Check if item is not empty and we have access to it.
    if ($item && (!isset($item['#access']) || $item['#access'])) {
      if (!empty($item['#group'])) {
        $label = $item['#group']->label;
      }
      else {
        if (!empty($item['#title'])) {
          $label = $item['#title'];
        }
      }
      $id = drupal_html_id('bootstrap-fieldgroup-nav-item--' . $label);

      // Is an explicit nav item?
      if (!empty($item['#type']) && 'bootstrap_fieldgroup_nav_item' == $item['#type']) {
        $classes = $item['#group']->classes;
      }
      else {
        $classes = '';
      }
      $variables['navs'][] = array(
        'content' => l(check_plain(t($label)), NULL, array(
          'attributes' => array(
            'data-toggle' => 'tab',
          ),
          'fragment' => $id,
          'external' => TRUE,
          'html' => TRUE,
        )),
        'classes' => $classes,
      );
      $variables['panes'][] = array(
        'id' => $id,
        'content' => drupal_render($item),
      );
    }
  }

  // Config?
  $variables['active'] = 0;
  $variables['is_empty'] = empty($variables['navs']) && empty($variables['panes']);
  $variables['is_single'] = count($variables['navs']) == 1;
}

/**
 * Implements template_preprocess_bootstrap_tabs().
 * @param $variables
 */
function template_preprocess_bootstrap_fieldgroup_accordion(&$variables) {
  $group =& $variables['group'];
  $variables['classes'] = $variables['group']->classes;
  $variables['id'] = drupal_html_id('bootstrap-fieldgroup-accordion--' . $variables['group']->label);
  uasort($variables['items'], 'element_sort');
  foreach ($variables['items'] as $key => $item) {

    // Check if item is not empty and we have access to it.
    if ($item && (!isset($item['#access']) || $item['#access'])) {
      $id = drupal_html_id('bootstrap-fieldgroup-accordion-item--' . $item['#title']);
      $is_collapsed = !isset($item['#group']) || $item['#group']->format_settings['formatter'] == 'closed';

      // Is an explicit accordion item?
      if (!empty($item['#type']) && 'bootstrap_fieldgroup_accordion_item' == $item['#type']) {
        $classes = $item['#group']->classes;
      }
      else {
        $classes = '';
      }
      $variables['panels'][] = array(
        'classes' => $classes,
        'id' => $id,
        'label' => check_plain(t($item['#title'])),
        'link_classes' => $is_collapsed ? 'collapsed' : '',
        'collapse' => $is_collapsed ? 'collapse' : 'collapse in',
        'content' => drupal_render($item),
      );
    }
  }

  // Config?
  $variables['active'] = 0;
  $variables['is_empty'] = empty($variables['panels']);
  $variables['is_single'] = count($variables['panels']) == 1;
}

/**
 * Implements field_group_pre_render_<format-type>.
 * Format type: Bootstrap Grid Row.
 *
 * @param $element The field group form element.
 * @param $group The Field group object prepared for pre_render.
 * @param $form The root element or form.
 */
function field_group_pre_render_bootstrap_grid_row(&$element, $group, &$form) {

  // Get the textual format of the the options available (xs, sm, md, lg).
  $screen_size_texts = _bootstrap_grid_col_screens();
  $settings = $group->format_settings['instance_settings'];

  // Add only the classes defined in the field group configuration. The rest
  // will be omitted.
  $col_classes = '';
  foreach ($screen_size_texts as $screen_size => $text) {
    if (!empty($settings['bootstrap_grid_col_' . $screen_size])) {
      $col_classes .= 'col-' . $screen_size . '-' . $settings['bootstrap_grid_col_' . $screen_size] . ' ';
    }
  }
  $prefix = '<div class="row ' . $group->classes . '">';
  $suffix = '</div>';

  // Wrap the fields in a panel if the panelize option is set to 1.
  // The panel needs to be wrapped in a column so that margins align correctly.
  if ($settings['panelize']) {
    $prefix .= '<div class="col-xs-12"><div class="panel panel-default"><div class="panel-body">';
    $suffix .= '</div></div></div>';
  }

  // If the show_heading configuration option is set to 1, add a column to
  // display the title and the description of the field group.
  if ($settings['show_heading']) {

    // If heading_position is 1, render the column after sub-groups so that it
    // shows on the right.
    if ($settings['heading_position']) {
      $suffix = '<div class="' . $col_classes . 'field-group-bootstrap_grid_row-heading">' . '<' . $settings['label_element'] . '>' . check_plain(t($group->label)) . '</' . $settings['label_element'] . '>' . '<' . $settings['description_element'] . '>' . $group->description . '</' . $settings['description_element'] . '>' . '</div>' . $suffix;
    }
    else {
      $prefix .= '<div class="' . $col_classes . 'field-group-bootstrap_grid_row-heading">' . '<' . $settings['label_element'] . '>' . check_plain(t($group->label)) . '</' . $settings['label_element'] . '>' . '<' . $settings['description_element'] . '>' . $group->description . '</' . $settings['description_element'] . '>' . '</div>';
    }
  }
  $element += array(
    '#type' => 'markup',
    '#prefix' => $prefix,
    '#suffix' => $suffix,
  );
}

/**
 * Implements field_group_pre_render_<format-type>.
 * Format type: Bootstrap Grid Column.
 *
 * @param $element The field group form element.
 * @param $group The Field group object prepared for pre_render.
 * @param $form The root element or form.
 */
function field_group_pre_render_bootstrap_grid_col(&$element, $group, &$form) {

  // Get the textual format of the the options available (xs, sm, md, lg).
  $screen_size_texts = _bootstrap_grid_col_screens();
  $settings = $group->format_settings['instance_settings'];

  // Add only the classes defined in the field group configuration. The rest
  // will be omitted.
  $col_classes = '';
  foreach ($screen_size_texts as $screen_size => $text) {
    if (!empty($settings['bootstrap_grid_col_' . $screen_size])) {
      $col_classes .= 'col-' . $screen_size . '-' . $settings['bootstrap_grid_col_' . $screen_size] . ' ';
    }
  }
  $prefix = '<div class="' . $col_classes . $group->classes . '">';
  $suffix = '</div>';

  // Wrap the fields in a panel if the panelize option is set to 1.
  if ($settings['panelize']) {
    $prefix .= '<div class="panel panel-default"><div class="panel-body">';
    $suffix .= '</div></div>';
  }
  $element += array(
    '#type' => 'markup',
    '#prefix' => $prefix,
    '#suffix' => $suffix,
  );
}

/**
 * Helper function that returns the format settings array for the
 * bootstrap_grid_col_[xs,sm,md,lg] options used in bootstrap_grid_row and
 * bootstrap_grid_col field group format types.
 *
 * @params string $screen The screen to which the option relates to (xs,sm,md,lg).
 * @params object $group The Field group object.
 * @params array $formatter The formatter used for the field group.
 * @params boolean $is_for_heading Whether the options are for rendering the heading in a Bootstrap Grid Row
 *                                 or for the fields in a Bootstrap Grid Column.
 */
function _bootstrap_fieldgroup_grid_col_format_settings($type, $group, $formatter, $is_for_heading = FALSE) {
  $screen_size_texts = _bootstrap_grid_col_screens();
  $title = t('The number of columns the fieldgroup should span for ' . $screen_size_texts[$type] . ' screens.');
  if ($is_for_heading) {
    $title = t('The number of columns the heading of the fieldgroup should span for ' . $screen_size_texts[$type] . ' screens.');
  }
  return array(
    '#title' => $title,
    '#type' => 'select',
    '#options' => _bootstrap_grid_col_options(),
    '#default_value' => isset($group->format_settings['instance_settings']['bootstrap_grid_col_' . $type]) ? $group->format_settings['instance_settings']['bootstrap_grid_col_' . $type] : $formatter['instance_settings']['bootstrap_grid_col_' . $type],
  );
}

/**
 * Returns the choices available for the bootstrap_grid_col_[xs,sm,md,lg]
 * configuration options. Provided by a function to avoid hardcoding them in
 * multiple places in the code.
 */
function _bootstrap_grid_col_options() {
  static $options;
  if (!isset($options)) {
    $options = array(
      0 => null,
      1 => '1',
      2 => '2',
      3 => '3',
      4 => '4',
      5 => '5',
      6 => '6',
      7 => '7',
      8 => '8',
      9 => '9',
      10 => '10',
      11 => '11',
      12 => '12',
    );
  }
  return $options;
}

/**
 * Returns the class values suffices available for the bootstrap_grid_col_[xs,sm,md,lg]
 * configuration options. Provided by a function to avoid hardcoding them in
 * multiple places in the code.
 */
function _bootstrap_grid_col_screens() {
  static $screens;
  if (!isset($screens)) {
    $screens = array(
      'xs' => 'extra small',
      'sm' => 'small',
      'md' => 'medium',
      'lg' => 'large',
    );
  }
  return $screens;
}

Functions

Namesort descending Description
bootstrap_fieldgroup_ctools_plugin_api Implements hook_ctools_plugin_api().
bootstrap_fieldgroup_field_group_formatter_info Implements hook_field_group_formatter_info().
bootstrap_fieldgroup_field_group_format_settings Implements hook_field_group_format_settings(). If the group has no format settings, default ones will be added.
bootstrap_fieldgroup_field_group_pre_render Implements hook_field_group_pre_render().
bootstrap_fieldgroup_theme Implements hook_theme().
field_group_pre_render_bootstrap_fieldgroup_accordion Implements field_group_pre_render_<format-type>. Format type: Bootstrap Accordion.
field_group_pre_render_bootstrap_fieldgroup_accordion_item Implements field_group_pre_render_<format-type>. Format type: Bootstrap Accordion item.
field_group_pre_render_bootstrap_fieldgroup_nav Implements field_group_pre_render_<format-type>. Format type: Bootstrap nav tabs/pills.
field_group_pre_render_bootstrap_fieldgroup_nav_item Implements field_group_pre_render_<format-type>. Format type: Bootstrap nav item.
field_group_pre_render_bootstrap_grid_col Implements field_group_pre_render_<format-type>. Format type: Bootstrap Grid Column.
field_group_pre_render_bootstrap_grid_row Implements field_group_pre_render_<format-type>. Format type: Bootstrap Grid Row.
template_preprocess_bootstrap_fieldgroup_accordion Implements template_preprocess_bootstrap_tabs().
template_preprocess_bootstrap_fieldgroup_nav Implements template_preprocess_bootstrap_tabs().
_bootstrap_fieldgroup_grid_col_format_settings Helper function that returns the format settings array for the bootstrap_grid_col_[xs,sm,md,lg] options used in bootstrap_grid_row and bootstrap_grid_col field group format types.
_bootstrap_grid_col_options Returns the choices available for the bootstrap_grid_col_[xs,sm,md,lg] configuration options. Provided by a function to avoid hardcoding them in multiple places in the code.
_bootstrap_grid_col_screens Returns the class values suffices available for the bootstrap_grid_col_[xs,sm,md,lg] configuration options. Provided by a function to avoid hardcoding them in multiple places in the code.