/**
* Sets parent based on default value
*/
function set_parent($parent = null)
{
$p = $this->get_parent();
if (empty($parent) && empty($p)) {
$parent = 'text';
$d = $this->get_default();
if (is_bool($d)) {
$parent = 'checkbox';
}
$parent = 'option_' . $parent;
} elseif (!empty($p) && !is_object($p)) {
$parent =& $p;
}
parent::set_parent($parent);
}
/**
* Sets an element for the field type
* @param string $name Name of element
* @param SLB_Field_Type $type Reference of field type to use for element
* @param array $properties Properties for element (passed as keyed associative array)
* @param string $id_prop Name of property to set $name to (e.g. ID, etc.)
*/
function set_element($name, $type, $properties = array(), $id_prop = 'id')
{
$name = trim(strval($name));
if (empty($name)) {
return false;
}
//Create new field for element
$el = new SLB_Field($name, $type);
//Set container to current field instance
$el->set_container($this);
//Add properties to element
$el->set_properties($properties);
//Save element to current instance
$this->elements[$name] =& $el;
}
/**
* Default placeholder processing
* To be executed when current placeholder has not been handled by another handler
* @param string $output Value to be used in place of placeholder
* @param SLB_Field $item Field containing placeholder
* @param array $placeholder Current placeholder
* @see SLB_Field::parse_layout for structure of $placeholder array
* @param string $layout Layout to build
* @param array $data Extended data for item
* @return string Value to use in place of current placeholder
*/
function process_placeholder_default($output, $item, $placeholder, $layout, $data)
{
//Validate parameters before processing
if (empty($output) && $item instanceof SLB_Field_Type && is_array($placeholder)) {
//Build path to replacement data
$output = $item->get_member_value($placeholder);
//Check if value is group (properties, etc.)
//All groups must have additional attributes (beyond reserved attributes) that define how items in group are used
if (is_array($output) && !empty($placeholder['attributes']) && is_array($placeholder['attributes']) && ($ph = $item->get_placeholder_defaults()) && ($attribs = array_diff(array_keys($placeholder['attributes']), array_values($ph->reserved)))) {
/* Targeted property is an array, but the placeholder contains additional options on how property is to be used */
//Find items matching criteria in $output
//Check for group criteria
if ('properties' == $placeholder['tag'] && ($prop_group = $item->get_group($placeholder['attributes']['group'])) && !empty($prop_group)) {
/* Process group */
$group_out = array();
//Iterate through properties in group and build string
foreach (array_keys($prop_group) as $prop_key) {
$prop_val = $item->get_property($prop_key);
if (!is_null($prop_val)) {
$group_out[] = $prop_key . '="' . $prop_val . '"';
}
}
$output = implode(' ', $group_out);
}
} elseif (is_object($output) && $output instanceof $item->base_class) {
/* Targeted property is actually a nested item */
//Set caller to current item
$output->set_caller($item);
//Build layout for nested element
$output = $output->build_layout($layout);
}
}
return $output;
}