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File: HtmlToData.js
/**
 * HtmlToData.js
 *
 * Released under LGPL License.
 * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
 *
 * License: http://www.tinymce.com/license
 * Contributing: http://www.tinymce.com/contributing
 */

define(
  'tinymce.plugins.media.core.HtmlToData',
  [
    'tinymce.core.util.Tools',
    'tinymce.core.html.SaxParser',
    'tinymce.core.html.Schema',
    'tinymce.core.dom.DOMUtils',
    'tinymce.plugins.media.core.VideoScript',
    'tinymce.plugins.media.core.Size'
  ],
  function (Tools, SaxParser, Schema, DOMUtils, VideoScript, Size) {
    var DOM = DOMUtils.DOM;

    var getEphoxEmbedIri = function (elm) {
      return DOM.getAttrib(elm, 'data-ephox-embed-iri');
    };

    var isEphoxEmbed = function (html) {
      var fragment = DOM.createFragment(html);
      return getEphoxEmbedIri(fragment.firstChild) !== '';
    };

    var htmlToDataSax = function (prefixes, html) {
      var data = {};

      new SaxParser({
        validate: false,
        allow_conditional_comments: true,
        special: 'script,noscript',
        start: function (name, attrs) {
          if (!data.source1 && name === "param") {
            data.source1 = attrs.map.movie;
          }

          if (name === "iframe" || name === "object" || name === "embed" || name === "video" || name === "audio") {
            if (!data.type) {
              data.type = name;
            }

            data = Tools.extend(attrs.map, data);
          }

          if (name === "script") {
            var videoScript = VideoScript.getVideoScriptMatch(prefixes, attrs.map.src);
            if (!videoScript) {
              return;
            }

            data = {
              type: "script",
              source1: attrs.map.src,
              width: videoScript.width,
              height: videoScript.height
            };
          }

          if (name === "source") {
            if (!data.source1) {
              data.source1 = attrs.map.src;
            } else if (!data.source2) {
              data.source2 = attrs.map.src;
            }
          }

          if (name === "img" && !data.poster) {
            data.poster = attrs.map.src;
          }
        }
      }).parse(html);

      data.source1 = data.source1 || data.src || data.data;
      data.source2 = data.source2 || '';
      data.poster = data.poster || '';

      return data;
    };

    var ephoxEmbedHtmlToData = function (html) {
      var fragment = DOM.createFragment(html);
      var div = fragment.firstChild;

      return {
        type: 'ephox-embed-iri',
        source1: getEphoxEmbedIri(div),
        source2: '',
        poster: '',
        width: Size.getMaxWidth(div),
        height: Size.getMaxHeight(div)
      };
    };

    var htmlToData = function (prefixes, html) {
      return isEphoxEmbed(html) ? ephoxEmbedHtmlToData(html) : htmlToDataSax(prefixes, html);
    };

    return {
      htmlToData: htmlToData
    };
  }
);