protected function findField($name, $group = null)
{
$element = false;
$fields = array();
// Make sure there is a valid JForm XML document.
if (!$this->xml instanceof SimpleXMLElement) {
return false;
}
// Let's get the appropriate field element based on the method arguments.
if ($group) {
// Get the fields elements for a given group.
$elements =& $this->findGroup($group);
// Get all of the field elements with the correct name for the fields elements.
/** @var SimpleXMLElement $element */
foreach ($elements as $element) {
// If there are matching field elements add them to the fields array.
if ($tmp = $element->xpath('descendant::field[@name="' . $name . '"]')) {
$fields = array_merge($fields, $tmp);
} elseif ($tmp = $element->xpath('descendant::field[@name_from="' . $name . '"]')) {
$fields = array_merge($fields, $tmp);
}
}
// Make sure something was found.
if (!$fields) {
return false;
}
// Use the first correct match in the given group.
$groupNames = explode('.', $group);
/** @var SimpleXMLElement $field */
foreach ($fields as &$field) {
// Get the group names as strings for ancestor fields elements.
$attrs = $field->xpath('ancestor::fields[@name]/@name');
$names = array_map('strval', $attrs ? $attrs : array());
// If the field is in the exact group use it and break out of the loop.
if ($names == (array) $groupNames) {
$element =& $field;
break;
}
}
} else {
// Get an array of fields with the correct name.
$fields = $this->xml->xpath('//field[@name="' . $name . '"]');
if (!$fields) {
$fields = array();
}
$fieldsNameFrom = $this->xml->xpath('//field[@name_from="' . $name . '"]');
if ($fieldsNameFrom) {
$fields = array_merge($fields, $fieldsNameFrom);
}
// Make sure something was found.
if (empty($fields)) {
return false;
}
// Search through the fields for the right one.
foreach ($fields as &$field) {
// If we find an ancestor fields element with a group name then it isn't what we want.
if ($field->xpath('ancestor::fields[@name]')) {
continue;
} else {
$element =& $field;
break;
}
}
}
return $element;
}
