Vimeo-omeka-module/src/Site/BlockLayout/Vimeo.php

<?php
namespace Vimeo\Site\BlockLayout;

use Omeka\Api\Representation\SiteRepresentation;
use Omeka\Api\Representation\SitePageRepresentation;
use Omeka\Api\Representation\SitePageBlockRepresentation;
use Omeka\Site\BlockLayout\AbstractBlockLayout;
use Laminas\View\Renderer\PhpRenderer;

use Laminas\Form\FormElementManager;
use Vimeo\Form\VimeoBlockForm;
use DOMDocument;

class Vimeo extends AbstractBlockLayout
{
	/**
     * @var FormElementManager
     */
    protected $formElementManager;

    /**
     * @var array
     */
	protected $defaultSettings = [];

    /**
     * @param FormElementManager $formElementManager
     * @param array $defaultSettings
     */
    public function __construct(FormElementManager $formElementManager, array $defaultSettings)
    {
        $this->formElementManager = $formElementManager;
        $this->defaultSettings = $defaultSettings;
    }

	public function getLabel() {
		return 'Vimeo video';
	}

	public function form(PhpRenderer $view,
                       SiteRepresentation $site,
                       SitePageRepresentation $page = null,
                       SitePageBlockRepresentation $block = null
    ) {
		$form = $this->formElementManager->get(VimeoBlockForm::class);
		$data = $block
			? $block->data() + $this->defaultSettings
			: $this->defaultSettings;
		$form->setData([
			'o:block[__blockIndex__][o:data][title]' => $data['title'],
			'o:block[__blockIndex__][o:data][width]' => $data['width'],
      'o:block[__blockIndex__][o:data][renderSourceLink]' => $data['renderSourceLink'],
		]);
		$form->prepare();

		$html = '';
		$html .= $view->blockAttachmentsForm($block);
		$html .= '<a href="#" class="collapse" aria-label="collapse"><h4>';
    $html .= $view->translate('Options'). '</h4></a>';
		$html .= '<div class="collapsible" style="padding-top:6px;">';
		$html .= $view->formCollection($form);
    $html .= '</div>';
		return $html;
    }

	public function render(PhpRenderer $view, SitePageBlockRepresentation $block)
	{
  		$attachments = $block->attachments();
          if (!$attachments) {
              return '';
  		}
      $media = $attachments[0]->item()->media()[0];
      $ratio = $media->mediaData()['width'] / $media->mediaData()['height'];

      // creates an iframe injecting our width and calculated ratio
      $attribs= 'ratio="'.$ratio.'"'.PHP_EOL;
      $doc = new DOMDocument();
      $doc->loadHTML($media->mediaData()['html']);
      $html_element= $doc->getElementsByTagName('iframe')->item(0);
      if ($html_element->hasAttributes()) {
        foreach ($html_element->attributes as $attr) {
          $name = $attr->nodeName;
          $value = $attr->nodeValue;
          if ($name == 'height') {
            // we will calculate height with jQuery
            continue;
          }
          if ($name == 'width') {
            $attrib = 'width="'.$block->dataValue('width').'%"';
            $attribs .= $attrib.PHP_EOL;
            continue;
          }
          $attrib = $name.'="'.$value.'"';
          $attribs .= $attrib.PHP_EOL;
        }
      }
      $iframe = "<iframe ".$attribs." >".PHP_EOL."</iframe>";

      return $view->partial('common/block-layout/vimeo', [
        'title' => $block->dataValue('title'),
        'renderSourceLink' => $block->dataValue('renderSourceLink'),
        'item_url' => $attachments[0]->item()->url(),
        'vimeo_iframe' => $iframe
      ]);
  	}
  }