crm.fsf.org/20131203/files/sites/all/modules-new/views/handlers/views_handler_argument_null.inc

   1 <?php
   2
   3 /**
   4  * @file
   5  * Definition of views_handler_argument_null.
   6  */
   7
   8 /**
   9  * Argument handler that ignores the argument.
  10  *
  11  * @ingroup views_argument_handlers
  12  */
  13 class views_handler_argument_null extends views_handler_argument {
  14   function option_definition() {
  15     $options = parent::option_definition();
  16     $options['must_not_be'] = array('default' => FALSE, 'bool' => TRUE);
  17     return $options;
  18   }
  19
  20   /**
  21    * Override options_form() so that only the relevant options
  22    * are displayed to the user.
  23    */
  24   function options_form(&$form, &$form_state) {
  25     parent::options_form($form, $form_state);
  26     $form['must_not_be'] = array(
  27       '#type' => 'checkbox',
  28       '#title' => t('Fail basic validation if any argument is given'),
  29       '#default_value' => !empty($this->options['must_not_be']),
  30       '#description' => t('By checking this field, you can use this to make sure views with more arguments than necessary fail validation.'),
  31       '#fieldset' => 'more',
  32     );
  33
  34     unset($form['exception']);
  35   }
  36
  37   /**
  38    * Override default_actions() to remove actions that don't
  39    * make sense for a null argument.
  40    */
  41   function default_actions($which = NULL) {
  42     if ($which) {
  43       if (in_array($which, array('ignore', 'not found', 'empty', 'default'))) {
  44         return parent::default_actions($which);
  45       }
  46       return;
  47     }
  48     $actions = parent::default_actions();
  49     unset($actions['summary asc']);
  50     unset($actions['summary desc']);
  51     return $actions;
  52   }
  53
  54   function validate_argument_basic($arg) {
  55     if (!empty($this->options['must_not_be'])) {
  56       return !isset($arg);
  57     }
  58
  59     return parent::validate_argument_basic($arg);
  60   }
  61
  62   /**
  63    * Override the behavior of query() to prevent the query
  64    * from being changed in any way.
  65    */
  66   function query($group_by = FALSE) {}
  67 }