MediaWiki:Gadget-import-enwiki-tmpl.jsFollow

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/*
   import-enwiki-tmpl -- 19 December 2015.
   Author: [[User:Edward Chernenko]].
 
   When opening Template or Module page which doesn't exist here
   but exists in English Wikipedia, load its source automatically
   into the edit form. Automatically specifies proper attribution
   (as required by CC-BY-SA 3.0) in the edit summary field.
*/

$(function() {
  var conf = mw.config.get([
	'wgNamespaceNumber',
	'wgArticleId',
	'wgAction',
	'wgPageName'
  ]);

  /* Note: Module namespace has number 828 */
  if([10, 828].indexOf(conf.wgNamespaceNumber) == -1 || conf.wgArticleId != 0 || conf.wgAction != 'edit') return;

  $.getJSON("https://en.wikipedia.org/w/api.php?format=json&action=query&prop=revisions&titles=" +
     encodeURIComponent(conf.wgPageName) + "&rvprop=content&callback=?", function(ret){

     var pages = ret['query']['pages'];
     for(var pageid in pages)
     {
       var revs = pages[pageid]['revisions'];
       if(!revs) return;

       text = revs[0]['*'];

       $('#wpTextbox1')[0].value = text;
       if(!text.match('^#'))
         $('#wpSummary')[0].value = 'from English Wikipedia, CC-BY-SA 3.0, list of authors: http://en.wikipedia.org/w/index.php?title=' +
            conf.wgPageName + '&action=history';
       return;
     }

  });
});