function execute($category)
{
global $wgRequest, $wgOut, $wgUser, $wgTitle;
// If a category has been selected (i.e., it's not just
// Special:EditSchema), only display this if the user is
// allowed to edit the category page.
if (!is_null($category) && (!$wgUser->isAllowed('edit') || !$wgTitle->userCan('edit'))) {
$wgOut->permissionRequired('edit');
return;
}
$this->setHeaders();
$text = '<p>' . wfMessage('ps-page-desc-edit-schema')->parse() . '</p>';
PageSchemas::addJavascriptAndCSS();
$save_page = $wgRequest->getCheck('wpSave');
if ($save_page) {
$psXML = self::createPageSchemaXMLFromForm();
$categoryTitle = Title::newFromText($category, NS_CATEGORY);
$categoryArticle = new Article($categoryTitle);
if ($categoryTitle->exists()) {
$pageText = $categoryArticle->getContent();
$pageSchemaObj = new PSSchema($category);
if ($pageSchemaObj->isPSDefined()) {
// Do some preg_replace magic.
// This is necessary if the <PageSchema> tag
// accepts any attributes - which it currently
// does not, but it may well in the future.
$tag = "PageSchema";
$pageText = preg_replace('{<' . $tag . '[^>]*>([^@]*?)</' . $tag . '>' . '}', $psXML, $pageText);
} else {
$pageText = $psXML . $pageText;
}
} else {
$pageText = $psXML;
}
$editSummary = $wgRequest->getVal('wpSummary');
$categoryArticle->doEdit($pageText, $editSummary);
$redirectURL = $categoryTitle->getLocalURL();
$text = <<<END
\t\t<script type="text/javascript">
\t\twindow.onload = function() {
\t\t\twindow.location="{$redirectURL}";
\t\t}
\t\t</script>
END;
$wgOut->addHTML($text);
return true;
}
if ($category == "") {
// No category was specified - show the list of
// categories with a page schema defined.
$text = self::showLinksToCategories();
$wgOut->addHTML($text);
return true;
}
// We have a category - show a form.
// See if a page schema has already been defined for this category.
$title = Title::newFromText($category, NS_CATEGORY);
$pageId = $title->getArticleID();
$dbr = wfGetDB(DB_SLAVE);
$res = $dbr->select('page_props', array('pp_page', 'pp_propname', 'pp_value'), array('pp_page' => $pageId));
$row = $dbr->fetchRow($res);
if ($row == null && !$title->exists()) {
// Category doesn't exist.
$wgOut->setPageTitle(wfMessage('createschema')->parse());
$text = '<p>' . wfMessage('ps-page-desc-cat-not-exist')->parse() . '</p>';
$text .= self::printForm();
} elseif ($row[1] != 'PageSchema' || $row[2] == null) {
// Category exists, but has no page schema.
$text = '<p>' . wfMessage('ps-page-desc-ps-not-exist')->parse() . '</p>';
$wgOut->setPageTitle(wfMessage('createschema')->parse());
$text .= self::printForm();
} else {
// It's a category with an existing page schema -
// populate the form with its values.
$pageSchemaObj = new PSSchema($category);
$pageXMLstr = $row[2];
$pageXML = simplexml_load_string($pageXMLstr);
$text = self::printForm($pageSchemaObj, $pageXML);
}
$wgOut->addHTML($text);
return true;
}
