<?php
namespace Assetic\Filter;
use Assetic\Util\CssUtils;
abstract class BaseCssFilter implements FilterInterface {
  
  protected function filterReferences($content, $callback, $limit = -1, &$count = 0) {
    return CssUtils::filterReferences($content, $callback, $limit, $count);
  }
  
  protected function filterUrls($content, $callback, $limit = -1, &$count = 0) {
    return CssUtils::filterUrls($content, $callback, $limit, $count);
  }
  
  protected function filterImports($content, $callback, $limit = -1, &$count = 0, $includeUrl = true) {
    return CssUtils::filterImports($content, $callback, $limit, $count, $includeUrl);
  }
  
  protected function filterIEFilters($content, $callback, $limit = -1, &$count = 0) {
    return CssUtils::filterIEFilters($content, $callback, $limit, $count);
  }
}