Issue #1171952 by primerg: Add single on/off checkbox option for yes/no filters

CHANGELOG.txt

@@ -6,6 +6,7 @@ Better Exposed Filters 6.x-2.0-xxxx  xxxx-xx-xx
 ------------------------------------------------
 Issue #1291994 by ressa: Adds node counts to taxonomy filters.
 by mikeker: Added term depth limit option.
+Issue #1171952 by primerg: Add single on/off checkbox option for yes/no filters
 
 
 Better Exposed Filters 6.x-2.0-beta2  2011-08-03

better_exposed_filters.module

@@ -88,6 +88,13 @@ function better_exposed_filters_form_alter(&$form, $form_state, $form_id) {
         ),
       );
 
+      if ($form['options']['value']['#type'] == 'radios'
+          && count($form['options']['value']['#options']) == 3
+          && isset($form['options']['value']['#options'][1])
+          && isset($form['options']['value']['#options'][0])) {
+        $left['bef_format']['#options']['bef_single'] = t('Single on/off checkbox');
+      }
+
       // Build check all/none option form element
       $right['bef_select_all_none'] = array(
         '#type' => 'checkbox',
@@ -219,12 +226,30 @@ function better_exposed_filters_form_alter(&$form, $form_state, $form_id) {
               // Intentionally falling through
 
             case 'bef':
+            case 'bef_single':
               $show_apply = TRUE;
               if (empty($form[$field_id]['#multiple'])) {
                 // Single-select -- display as radio buttons
                 $form[$field_id]['#type'] = 'radios';
                 $form[$field_id]['#process'] = array('expand_radios', 'views_process_dependency');
 
+                // Use the single checkbox
+                if ($filter->options['expose']['bef_format'] == 'bef_single') {
+                  $form[$field_id]['#type'] = 'checkbox';
+                  $form[$field_id]['#title'] = $form['#info']["filter-$field_id"]['label'];
+
+                  // Remove this option. We only need the values 1 and 0
+                  unset($form[$field_id]['#options']['All']);
+
+                  // Drupal core has a bug dealing with type checkbox. This is a
+                  // fix to make sure the checkboxes are on and off based on user
+                  // selection
+                  if ($form_state['input'][$field_id] == 'All') {
+                    $form[$field_id]['#default_value'] = 0;
+                    $form_state['input'][$field_id] = 0;
+                  }
+                  $form[$field_id]['#value'] = $form_state['input'][$field_id];
+                }
                 // Clean up objects from the options array (happens for taxonomy-based filters)
                 $options = $form[$field_id]['#options'];
                 $form[$field_id]['#options'] = array();