/**
* Try to get the CSS from cache.
* If it's not there re-generate it and save it to cache
* If we are in preview mode, recompile the css using the theme present in the url.
*
*/
private function get_compiled_css()
{
try {
// If we want to force a recompile, we throw an exception.
if ($this->preview_mode === true || self::PARSE_LESS_FILES_AT_EVERY_REQUEST === true) {
throw new Ai1ec_Cache_Not_Set_Exception();
} else {
// This throws an exception if the key is not set
$css = $this->persistance_context->get_data_from_persistence();
return $css;
}
} catch (Ai1ec_Cache_Not_Set_Exception $e) {
// If we are in preview mode we force a recompile and we pass the variables.
if ($this->preview_mode) {
return $this->lessphp_controller->parse_less_files($this->lessphp_controller->get_less_variable_data_from_config_file(Ai1ec_Less_Factory::create_less_file_instance(Ai1ec_Less_File::USER_VARIABLES_FILE)));
} else {
$css = $this->lessphp_controller->parse_less_files();
}
try {
$this->update_persistence_layer($css);
return $css;
} catch (Ai1ec_Cache_Write_Exception $e) {
// If something is really broken, still return the css.
// This means we parse it every time. This should never happen.
return $css;
}
}
}
