public function BlazyFilter::buildGrid in Blazy 8.2

Same name and namespace in other branches

1. 7 src/Plugin/Filter/BlazyFilter.php \Drupal\blazy\Plugin\Filter\BlazyFilter::buildGrid()

Build the grid.

Parameters

\DOMDocument $dom: The HTML DOM object being modified.

array $settings: The settings array.

array $elements: The renderable array of blazy item.

array $grid_nodes: The grid nodes.

Overrides BlazyFilterInterface::buildGrid

1 call to BlazyFilter::buildGrid()

BlazyFilter::process in src/Plugin/Filter/BlazyFilter.php

Performs the filter processing.

File

src/Plugin/Filter/BlazyFilter.php, line 271

Class

BlazyFilter

Provides a filter to lazyload image, or iframe elements.

Namespace

Drupal\blazy\Plugin\Filter

Code

public function buildGrid(\DOMDocument &$dom, array &$settings, array $elements = [], array $grid_nodes = []) {
  $xpath = new \DOMXPath($dom);
  $query = $settings['style'] = $settings['column'] ? 'column' : 'grid';
  $grid = FALSE;

  // This is weird, variables not working for xpath?
  $node = $query == 'column' ? $xpath
    ->query('//*[@data-column]') : $xpath
    ->query('//*[@data-grid]');
  if ($node->length > 0 && $node
    ->item(0) && $node
    ->item(0)
    ->hasAttribute('data-' . $query)) {
    $grid = $node
      ->item(0)
      ->getAttribute('data-' . $query);
  }
  if ($grid) {
    $grids = array_map('trim', explode(' ', $grid));
    foreach ([
      'small',
      'medium',
      'large',
    ] as $key => $item) {
      if (isset($grids[$key])) {
        $settings['grid_' . $item] = $grids[$key];
        $settings['grid'] = $grids[$key];
      }
    }
    $build = [
      'items' => $elements,
      'settings' => $settings,
    ];
    $output = $this->blazyManager
      ->build($build);
    $altered_html = $this->blazyManager
      ->getRenderer()
      ->render($output);
    if ($first = $grid_nodes[0]) {

      // Checks if the IMG is managed by caption filter identified by figure.
      if ($first->parentNode && $first->parentNode->tagName == 'figure') {
        $first = $first->parentNode;
      }

      // Create the parent grid container, and put it before the first.
      // This extra container ensures hook_blazy_build_alter() aint screw up.
      $parent = $first->parentNode ? $first->parentNode : $first;
      $container = $parent
        ->insertBefore($dom
        ->createElement('div'), $first);
      $container
        ->setAttribute('class', 'blazy-wrapper blazy-wrapper--filter');
      $updated_nodes = Html::load($altered_html)
        ->getElementsByTagName('body')
        ->item(0)->childNodes;
      foreach ($updated_nodes as $updated_node) {

        // Import the updated from the new DOMDocument into the original
        // one, importing also the child nodes of the updated node.
        $updated_node = $dom
          ->importNode($updated_node, TRUE);
        $container
          ->appendChild($updated_node);
      }

      // Cleanups old nodes already moved into grids.
      $this
        ->removeNodes($grid_nodes);
    }
  }
}