function do_main()
{
$this->aBreadcrumbs[] = array('url' => $_SERVER['PHP_SELF'], 'name' => _kt('Document Type Management'));
$this->oPage->setBreadcrumbDetails(_kt('view types'));
$addFields = array();
$addFields[] = new KTStringWidget(_kt('Name'), _kt('A short, human-readable name for the document type.'), 'name', null, $this->oPage, true);
// Get document types
$aDocumentTypes = DocumentType::getList();
// Get document type ids associated with documents - allow delete on those not associated
$aAssocDocs = DocumentType::getAssociatedTypes();
$oTemplating =& KTTemplating::getSingleton();
$oTemplate = $oTemplating->loadTemplate('ktcore/documenttypes/list');
$oTemplate->setData(array('context' => $this, 'document_types' => $aDocumentTypes, 'associated_types' => $aAssocDocs, 'add_fields' => $addFields));
return $oTemplate;
}