form::checkbox PHP Method

    public static function checkbox($name, $value = 1, $checked = false, $attributes = array())
    {
        return static::checkable('checkbox', $name, $value, $checked, $attributes);
    }

 /**
  * Displays a single category checkbox.
  */
 public static function display_category_checkbox($category, $selected_categories, $form_field, $enable_parents = FALSE)
 {
     $html = '';
     $cid = $category->id;
     // Get locale
     $l = Kohana::config('locale.language.0');
     $category_title = Category_Lang_Model::category_title($cid, $l);
     //$category_title = $category->category_title;
     $category_color = $category->category_color;
     // Category is selected.
     $category_checked = in_array($cid, $selected_categories);
     // Visible Child Count
     $vis_child_count = 0;
     foreach ($category->children as $child) {
         $child_visible = $child->category_visible;
         if ($child_visible) {
             // Increment Visible Child count
             ++$vis_child_count;
         }
     }
     $disabled = "";
     if (!$enable_parents and $category->children->count() > 0 and $vis_child_count > 0) {
         $disabled = " disabled=\"disabled\"";
     }
     $html .= form::checkbox($form_field . '[]', $cid, $category_checked, ' class="check-box"' . $disabled);
     $html .= $category_title;
     return $html;
 }