MediaWiki:Featured-video.js

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(function () {
  'use strict';

  function resizeVideo(figure) {
    var wrapper = figure.querySelector('.embedvideo-wrapper');
    var config;

    if (!wrapper) {
      return;
    }

    try {
      config = JSON.parse(figure.getAttribute('data-iframeconfig') || '{}');
    } catch (error) {
      return;
    }

    if (!(config.width > 0 && config.height > 0)) {
      return;
    }

    wrapper.style.height =
      (figure.clientWidth * config.height / config.width) + 'px';
  }

  function resizeVideos(root) {
    root.querySelectorAll('figure.embedvideo').forEach(resizeVideo);
  }

  mw.hook('wikipage.content').add(function ($content) {
    resizeVideos($content[0]);
  });

  window.addEventListener('resize', function () {
    resizeVideos(document);
  });
}());