function luceneIndexFiles() {
  	var spinner, count, updateEventSource;
  	if (luceneIndexFiles.active) {
  		return;
  	}
  	t('search_lucene', 'Indexing... {count} files left', {count: 0}); //preload translations
  	luceneIndexFiles.active = true;
  	updateEventSource = new OC.EventSource(OC.filePath('search_lucene', 'ajax', 'lucene.php'), {operation: 'index'});
  	updateEventSource.listen('count', function (unIndexedCount) {
  		count = unIndexedCount;
  		if (count > 0) {

  			spinner = $('form.searchbox #spinner .icon-loading');

  			if (spinner.length == 0) {
  				$('#searchbox').addClass('indexing');
  				spinner = $('<div id="spinner"/>');
  				$('form.searchbox').append(spinner);
  				spinner.tipsy({trigger: 'manual', gravity: 'e', fade: false});
  				spinner.attr('title', t('search_lucene', 'Indexing... {count} files left', {count: count}));
  				spinner.tipsy('show');
  			}
  		}
  	});
  
  	updateEventSource.listen('error', function (path) {
  		console.log('error while indexing ' + path);
  	});
  
  	updateEventSource.listen('indexing', function (path) {
  		count--;
  		spinner.attr('title', t('search_lucene', 'Indexing... {count} files left', {count: count}));
  		spinner.tipsy('show');
  	});
  
  	updateEventSource.listen('done', function (path) {
  		if (spinner) {
  			spinner.tipsy('hide');
  			spinner.remove();
  		}
  	});
  }
  luceneIndexFiles.active = false;
  
  $(document).ready(function () {
  	//add listener to the search box
  	$('#searchbox').on('click', function () {
  		setTimeout(function () { //load other stuff first
  			//check status of indexer
  			luceneIndexFiles();
  		}, 100);
  	});
  
  	//clock that shows progress ○◔◑◕●.
  	//hovering over it shows the current file
  	//clicking it stops the indexer: ⌛
  
  
  });