function generateCSS($group = null, $serve = true)
{
if (!$group && class_exists('NextendFontsGoogle', false)) {
$fonts = NextendFontsGoogle::getInstance();
$fonts->generateFonts();
}
$cssfiles = !$group ? $this->_cssFiles : (isset($this->_cssFilesGroup[$group]) ? $this->_cssFilesGroup[$group] : null);
if (!$cssfiles) {
return '';
}
$cache = !$group ? $this->_cache : $this->_cacheGroup[$group];
$lesscache = !$group ? $this->_lesscache : $this->_lesscacheGroup[$group];
if (count($cssfiles)) {
foreach ($cssfiles as $file) {
if (is_array($file)) {
// LESS
$lesscache->addContext($file[1], $file[2]);
} else {
if (substr($file, 0, 4) == 'http') {
$this->serveCSSFile($file);
} else {
if (NextendFilesystem::safefileexists($file)) {
if ($this->_cacheenabled) {
$cache->addFile($file);
} else {
$url = NextendFilesystem::pathToAbsoluteURL($file);
$this->serveCSSFile($url);
}
} else {
if ($this->_cacheenabled) {
$cache->addText($file);
} else {
$this->addCss($file, $group);
}
}
}
}
}
}
$filename = null;
if ($this->_cacheenabled) {
if ($lesscache) {
$filename = $lesscache->getCache();
if ($filename) {
$cache->addFile(NextendFilesystem::absoluteURLToPath($filename));
}
}
$filename = $cache->getCache();
if ($serve && $filename) {
$this->serveCSSFile($filename);
}
} else {
if ($lesscache) {
$filename = $lesscache->getCache();
if ($serve && $filename) {
$this->serveCSSFile($filename);
}
}
}
$this->serveCSS(true, $group);
return $filename;
}