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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\Form\FormField; use Joomla\CMS\HTML\HTMLHelper; use Joomla\CMS\Language\Text; /** * Form Field class for the Joomla Platform. * Provides a grouped list select field. * * @since 1.7.0 */ class GroupedlistField extends FormField { /** * The form field type. * * @var string * @since 1.7.0 */ protected $type = 'Groupedlist'; /** * Name of the layout being used to render the field * * @var string * @since 4.0.0 */ protected $layout = 'joomla.form.field.groupedlist'; /** * Method to get the field option groups. * * @return array The field option objects as a nested array in groups. * * @since 1.7.0 * @throws \UnexpectedValueException */ protected function getGroups() { $groups = array(); $label = 0; foreach ($this->element->children() as $element) { switch ($element->getName()) { // The element is an
case 'option': // Initialize the group if necessary. if (!isset($groups[$label])) { $groups[$label] = array(); } $disabled = (string) $element['disabled']; $disabled = ($disabled === 'true' || $disabled === 'disabled' || $disabled === '1'); // Create a new option object based on the
element. $tmp = HTMLHelper::_( 'select.option', ($element['value']) ? (string) $element['value'] : trim((string) $element), Text::alt(trim((string) $element), preg_replace('/[^a-zA-Z0-9_\-]/', '_', $this->fieldname)), 'value', 'text', $disabled ); // Set some option attributes. $tmp->class = (string) $element['class']; // Set some JavaScript option attributes. $tmp->onclick = (string) $element['onclick']; // Add the option. $groups[$label][] = $tmp; break; // The element is a
case 'group': // Get the group label. if ($groupLabel = (string) $element['label']) { $label = Text::_($groupLabel); } // Initialize the group if necessary. if (!isset($groups[$label])) { $groups[$label] = array(); } // Iterate through the children and build an array of options. foreach ($element->children() as $option) { // Only add
elements. if ($option->getName() !== 'option') { continue; } $disabled = (string) $option['disabled']; $disabled = ($disabled === 'true' || $disabled === 'disabled' || $disabled === '1'); // Create a new option object based on the
element. $tmp = HTMLHelper::_( 'select.option', ($option['value']) ? (string) $option['value'] : Text::_(trim((string) $option)), Text::_(trim((string) $option)), 'value', 'text', $disabled ); // Set some option attributes. $tmp->class = (string) $option['class']; // Set some JavaScript option attributes. $tmp->onclick = (string) $option['onclick']; // Add the option. $groups[$label][] = $tmp; } if ($groupLabel) { $label = \count($groups); } break; // Unknown element type. default: throw new \UnexpectedValueException(sprintf('Unsupported element %s in GroupedlistField', $element->getName()), 500); } } reset($groups); return $groups; } /** * Method to get the field input markup fora grouped list. * Multiselect is enabled by using the multiple attribute. * * @return string The field input markup. * * @since 1.7.0 */ protected function getInput() { $data = $this->getLayoutData(); // Get the field groups. $data['groups'] = (array) $this->getGroups(); return $this->getRenderer($this->layout)->render($data); } }