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* @license GNU General Public License version 2 or later; see LICENSE.txt */ namespace Joomla\CMS\Form\Field; \defined('JPATH_PLATFORM') or die; use Joomla\CMS\HTML\HTMLHelper; /** * Form Field class for the Joomla Platform. * * @since 1.7.0 */ class TimezoneField extends GroupedlistField { /** * The form field type. * * @var string * @since 1.7.0 */ protected $type = 'Timezone'; /** * The list of available timezone groups to use. * * @var array * @since 1.7.0 */ protected static $zones = array('Africa', 'America', 'Antarctica', 'Arctic', 'Asia', 'Atlantic', 'Australia', 'Europe', 'Indian', 'Pacific'); /** * The keyField of timezone field. * * @var integer * @since 3.2 */ protected $keyField; /** * Method to get certain otherwise inaccessible properties from the form field object. * * @param string $name The property name for which to get the value. * * @return mixed The property value or null. * * @since 3.2 */ public function __get($name) { switch ($name) { case 'keyField': return $this->keyField; } return parent::__get($name); } /** * Method to set certain otherwise inaccessible properties of the form field object. * * @param string $name The property name for which to set the value. * @param mixed $value The value of the property. * * @return void * * @since 3.2 */ public function __set($name, $value) { switch ($name) { case 'keyField': $this->keyField = (string) $value; break; default: parent::__set($name, $value); } } /** * Method to attach a Form object to the field. * * @param \SimpleXMLElement $element The SimpleXMLElement object representing the `
` tag for the form field object. * @param mixed $value The form field value to validate. * @param string $group The field name group control value. This acts as an array container for the field. * For example if the field has name="foo" and the group value is set to "bar" then the * full field name would end up being "bar[foo]". * * @return boolean True on success. * * @see FormField::setup() * @since 3.2 */ public function setup(\SimpleXMLElement $element, $value, $group = null) { $return = parent::setup($element, $value, $group); if ($return) { $this->keyField = (string) $this->element['key_field']; } return $return; } /** * Method to get the time zone field option groups. * * @return array The field option objects as a nested array in groups. * * @since 1.7.0 */ protected function getGroups() { $groups = array(); // Get the list of time zones from the server. $zones = \DateTimeZone::listIdentifiers(); // Build the group lists. foreach ($zones as $zone) { // Time zones not in a group we will ignore. if (strpos($zone, '/') === false) { continue; } // Get the group/locale from the timezone. list ($group, $locale) = explode('/', $zone, 2); // Only use known groups. if (\in_array($group, self::$zones)) { // Initialize the group if necessary. if (!isset($groups[$group])) { $groups[$group] = array(); } // Only add options where a locale exists. if (!empty($locale)) { $groups[$group][$zone] = HTMLHelper::_('select.option', $zone, str_replace('_', ' ', $locale), 'value', 'text', false); } } } // Sort the group lists. ksort($groups); foreach ($groups as &$location) { sort($location); } // Merge any additional groups in the XML definition. $groups = array_merge(parent::getGroups(), $groups); return $groups; } }