includes/resourceloader/ResourceLoaderUserCSSPrefsModule.php

   1 <?php
   2 /**
   3  * ResourceLoader module for user preference customizations.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @author Trevor Parscal
  22  * @author Roan Kattouw
  23  */
  24
  25 /**
  26  * Module for user preference customizations
  27  */
  28 class ResourceLoaderUserCSSPrefsModule extends ResourceLoaderModule {
  29
  30         protected $origin = self::ORIGIN_CORE_INDIVIDUAL;
  31
  32         /**
  33          * @return bool
  34          */
  35         public function enableModuleContentVersion() {
  36                 return true;
  37         }
  38
  39         /**
  40          * @param ResourceLoaderContext $context
  41          * @return array
  42          */
  43         public function getStyles( ResourceLoaderContext $context ) {
  44                 if ( !$this->getConfig()->get( 'AllowUserCssPrefs' ) ) {
  45                         return array();
  46                 }
  47
  48                 $options = $context->getUserObj()->getOptions();
  49
  50                 // Build CSS rules
  51                 $rules = array();
  52
  53                 // Underline: 2 = skin default, 1 = always, 0 = never
  54                 if ( $options['underline'] < 2 ) {
  55                         $rules[] = "a { text-decoration: " .
  56                                 ( $options['underline'] ? 'underline' : 'none' ) . "; }";
  57                 }
  58                 if ( $options['editfont'] !== 'default' ) {
  59                         // Double-check that $options['editfont'] consists of safe characters only
  60                         if ( preg_match( '/^[a-zA-Z0-9_, -]+$/', $options['editfont'] ) ) {
  61                                 $rules[] = "textarea { font-family: {$options['editfont']}; }\n";
  62                         }
  63                 }
  64                 $style = implode( "\n", $rules );
  65                 if ( $this->getFlip( $context ) ) {
  66                         $style = CSSJanus::transform( $style, true, false );
  67                 }
  68                 return array( 'all' => $style );
  69         }
  70
  71         /**
  72          * @param ResourceLoaderContext $context
  73          * @return bool
  74          */
  75         public function isKnownEmpty( ResourceLoaderContext $context ) {
  76                 $styles = $this->getStyles( $context );
  77                 return isset( $styles['all'] ) && $styles['all'] === '';
  78         }
  79
  80         /**
  81          * @return string
  82          */
  83         public function getGroup() {
  84                 return 'private';
  85         }
  86 }