/**
* @param OutputPage $out
* @param string &$html
*
* @return bool
*/
public function doOutputPageBeforeHTML(OutputPage $out, &$html)
{
$placeholders = $out->getProperty('wikibase-view-chunks');
if (!empty($placeholders)) {
$injector = new TextInjector($placeholders);
$expander = $this->getEntityViewPlaceholderExpander($out);
$html = $injector->inject($html, array($expander, 'getHtmlForPlaceholder'));
$out->addJsConfigVars('wbUserSpecifiedLanguages', array_values(array_intersect($this->userLanguageLookup->getUserSpecifiedLanguages($out->getUser()), $this->termsLanguages->getLanguages())));
}
}
