Diff of /moodle/lib/adminlib.php

-revision 1.153.2.57, Fri Dec 12 19:45:48 2008 WST
+revision 1.153.2.58, Thu Jan  8 16:05:31 2009 WST
 Line 2417
          }
          $defaults = array();
+         $size = min(10, count($this->choices));
          $return = '<div class="form-select"><input type="hidden" name="'.$this->get_full_name().'[xxxxx]" value="1" />'; // something must be submitted even if nothing selected
-         $return .= '<select id="'.$this->get_id().'" name="'.$this->get_full_name().'[]" size="10" multiple="multiple">';
+         $return .= '<select id="'.$this->get_id().'" name="'.$this->get_full_name().'[]" size="'.$size.'" multiple="multiple">';
          foreach ($this->choices as $key => $description) {
              if (in_array($key, $data)) {
                  $selected = 'selected="selected"';
-Line 2510
+Line 2511
  }
  /**
+  * An admin setting for selecting one or more users, who have a particular capability
+  * in the system context. Warning, make sure the list will never be too long. There is
+  * no paging or searching of this list.
+  *
+  * To correctly get a list of users from this config setting, you need to call the
+  * get_users_from_config($CFG->mysetting, $capability); function in moodlelib.php.
+  */
+ class admin_setting_users_with_capability extends admin_setting_configmultiselect {
+     protected $capability;
+     /**
+      * Constructor.
+      *
+      * @param string $name unique ascii name, either 'mysetting' for settings that in config, or 'myplugin/mysetting' for ones in config_plugins.
+      * @param string $visiblename localised name
+      * @param string $description localised long description
+      * @param array $defaultsetting array of usernames
+      * @param string $capability string capability name.
+      */
+     function __construct($name, $visiblename, $description, $defaultsetting, $capability) {
+         $users = get_users_by_capability(get_context_instance(CONTEXT_SYSTEM),
+                 $capability, 'username,firstname,lastname', 'lastname,firstname');
+         $choices = array(
+             '$@NONE@$' => get_string('nobody'),
+             '$@ALL@$' => get_string('everyonewhocan', 'admin', get_capability_string($capability)),
+         );
+         foreach ($users as $user) {
+             $choices[$user->username] = fullname($user);
+         }
+         parent::admin_setting_configmultiselect($name, $visiblename, $description, $defaultsetting, $choices);
+     }
+     function get_defaultsetting() {
+         $this->load_choices();
+         if (empty($this->defaultsetting)) {
+             return array('$@NONE@$');
+         } else if (array_key_exists($this->defaultsetting, $this->choices)) {
+             return $this->defaultsetting;
+         } else {
+             return '';
+         }
+     }
+     function get_setting() {
+         $result = parent::get_setting();
+         if (empty($result)) {
+             $result = array('$@NONE@$');
+         }
+         return $result;
+     }
+     function write_setting($data) {
+         // If all is selected, remove any explicit options.
+         if (in_array('$@ALL@$', $data)) {
+             $data = array('$@ALL@$');
+         }
+         // None never needs to be writted to the DB.
+         if (in_array('$@NONE@$', $data)) {
+             unset($data[array_search('$@NONE@$', $data)]);
+         }
+         return parent::write_setting($data);
+     }
+ }
+ /**
   * Special checkbox for calendar - resets SESSION vars.
   */
  class admin_setting_special_adminseesall extends admin_setting_configcheckbox {

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