clarin_bootstrap.theme

<?php

/**
 * @file
 * Functions to support theming in the SASS Starterkit subtheme.
 */

/**
 * Implements template_preprocess_views_view()
 * @param array $vars
 */
function clarin_bootstrap_preprocess_views_view(&$vars){
  $view = $vars['view'];
  $vars['more']['#options']['attributes']['class'] = array(
    'btn-link-blue'
  );
}

/**
 * Implements hook_preprocess_paragraph().
 */
function clarin_bootstrap_preprocess_node(&$variables)
{
  $node = $variables['node'];
  if ($node->hasField('field_show_toc') && $node->hasField('body')) {
    if ($node->get('field_show_toc')->value == 1) {
      $variables['toc'] = clarin_bootstrap_function_generate_navigation($node->get('body')->value);
      $variables['#attached']['library'][] = 'clarin_bootstrap/toc';
    }
  }

  if ($node->hasField('field_see_also_links')) {
    if (count($node->get('field_see_also_links')->getValue()) > 0) {
      $variables['more_links'] = 1;
    }
  }
}


function clarin_bootstrap_function_generate_navigation($HTML) {
  $DOM = new DOMDocument();
  $DOM->loadHTML($HTML);

  $navigation = '<ul>';

  // Iterating through all elements
  $h2IteratorStatus = 0; //0-closed, 1-open
  $h3IteratorStatus = 0; //0-closed, 1-open
  $h4IteratorStatus = 0; //0-closed, 1-open
  $h2i = 0;
  $h3i = 0;
  $h4i = 0;
  foreach($DOM->getElementsByTagName('*') as $element) {
    if($element->tagName == 'h2') {

      if($h3IteratorStatus){
        //it's open, need to close
        $navigation .= '</ul>';
        $h3IteratorStatus = 0;
      }

      if($h2IteratorStatus){
        //it's open, need to close
        $navigation .= '</li>';
        $h2IteratorStatus = 0;
      }

      $h2IteratorStatus = 1;
      $navigation .= '<li><a href="#heading-2-' . $h2i . '">' . $element->textContent .'</a></li>';
      $h2i++;
    } else if($element->tagName == 'h3') {
      if(!$h3IteratorStatus){
        $navigation .= '<ul>';
        $h2IteratorStatus = 1;
      }
      $h3IteratorStatus = 1;
      $navigation .= '<li><a href="#heading-3-' . $h3i . '">' . $element->textContent .'</a></li>';
      $h3i++;
    } else if ($element->tagName == 'h4') {

      if(!$h4IteratorStatus){
        $navigation .= '<ul>';
        $h3IteratorStatus = 1;
      }
      $h4IteratorStatus = 1;
      $navigation .= '<li><a href="#heading-4-' . $h4i . '">' . $element->textContent .'</a></li>';
      $h4i++;
    }
  }

  //check for last opened h3
  if($h4IteratorStatus){
    $navigation .= '</ul>';
  }
  //check for last opened h3
  if($h3IteratorStatus){
    $navigation .= '</ul>';
  }
  //check for last opened h2
  if($h2IteratorStatus){
    //it's open, need to close
    $navigation .= '</li>';
  }

  return $navigation.'</ul>';
}