admin/filters.php

   1 <?php // $Id$
   2
   3     require_once('../config.php');
   4
   5     $action     = optional_param('action', '', PARAM_ACTION);
   6     $filterpath = optional_param('filterpath', '', PARAM_PATH);
   7
   8     require_login();
   9     require_capability('moodle/site:config', get_context_instance(CONTEXT_SYSTEM));
  10
  11     $returnurl = "$CFG->wwwroot/$CFG->admin/settings.php?section=managefilters";
  12
  13     if (!confirm_sesskey()) {
  14         redirect($returnurl);
  15     }
  16
  17     // get a list of installed filters
  18     $installedfilters = array();
  19     $filterlocations = array('mod','filter');
  20     foreach ($filterlocations as $filterlocation) {
  21         $plugins = get_list_of_plugins($filterlocation);
  22         foreach ($plugins as $plugin) {
  23             $pluginpath = "$CFG->dirroot/$filterlocation/$plugin/filter.php";
  24             if (is_readable($pluginpath)) {
  25                 $installedfilters["$filterlocation/$plugin"] = "$filterlocation/$plugin";
  26             }
  27         }
  28     }
  29
  30     // get all the currently selected filters
  31     if (!empty($CFG->textfilters)) {
  32         $activefilters = explode(',', $CFG->textfilters);
  33     } else {
  34         $activefilters = array();
  35     }
  36
  37     //======================
  38     // Process Actions
  39     //======================
  40
  41     switch ($action) {
  42
  43     case 'hide':
  44         $key=array_search($filterpath, $activefilters);
  45         // check filterpath is valid
  46         if ($key===false) {
  47             break;
  48         }
  49         // just delete it
  50         unset($activefilters[$key]);
  51         break;
  52
  53     case 'show':
  54         // check filterpath is valid
  55         if (!array_key_exists($filterpath, $installedfilters)) {
  56             error("Filter $filterpath is not currently installed", $url);
  57         } elseif (array_search($filterpath,$activefilters)) {
  58             // filterpath is already active - doubleclick??
  59         } else {
  60             // add it to installed filters
  61             $activefilters[] = $filterpath;
  62             $activefilters = array_unique($activefilters);
  63         }
  64         break;
  65
  66     case 'down':
  67         $key=array_search($filterpath, $activefilters);
  68         // check filterpath is valid
  69         if ($key===false) {
  70             error("Filter $filterpath is not currently active", $url);
  71         } elseif ($key>=(count($activefilters)-1)) {
  72             // cannot be moved any further down - doubleclick??
  73         } else {
  74             // swap with $key+1
  75             $fsave = $activefilters[$key];
  76             $activefilters[$key] = $activefilters[$key+1];
  77             $activefilters[$key+1] = $fsave;
  78         }
  79         break;
  80
  81     case 'up':
  82         $key=array_search($filterpath, $activefilters);
  83         // check filterpath is valid
  84         if ($key===false) {
  85             error("Filter $filterpath is not currently active", $url);
  86         } elseif ($key<1) {
  87             //cannot be moved any further up - doubleclick??
  88         } else {
  89             // swap with $key-1
  90             $fsave = $activefilters[$key];
  91             $activefilters[$key] = $activefilters[$key-1];
  92             $activefilters[$key-1] = $fsave;
  93         }
  94         break;
  95     }
  96
  97     // save, reset cache and return
  98     set_config('textfilters', implode(',', $activefilters));
  99     reset_text_filters_cache();
 100     redirect($returnurl);
 101
 102 ?>