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<?php
/**
* The Turba_List:: class provides an interface for dealing with a
* list of Turba_Objects.
*
* $Horde: turba/lib/List.php,v 1.41.10.5 2007/12/20 14:34:28 jan Exp $
*
* @author Chuck Hagenbuch <chuck@horde.org>
* @author Jon Parise <jon@csh.rit.edu>
* @package Turba
*/
class Turba_List {
/**
* The array containing the Turba_Objects represented in this list.
*
* @var array
*/
var $objects = array();
/**
* The field to compare objects by.
*
* @var string
*/
var $_usortCriteria;
/**
* Constructor.
*/
function Turba_List($ids = array())
{
if ($ids) {
foreach ($ids as $value) {
list($source, $key) = explode(':', $value);
$driver = &Turba_Driver::singleton($source);
if (is_a($driver, 'Turba_Driver')) {
$this->insert($driver->getObject($key));
}
}
}
}
/**
* Inserts a new object into the list.
*
* @param Turba_Object $object The object to insert.
*/
function insert($object)
{
if (is_a($object, 'Turba_Object')) {
$key = $object->getSource() . ':' . $object->getValue('__key');
if (!isset($this->objects[$key])) {
$this->objects[$key] = $object;
}
}
}
/**
* Resets our internal pointer to the beginning of the list. Use this to
* hide the internal storage (array, list, etc.) from client objects.
*
* @return Turba_Object The next object in the list.
*/
function reset()
{
return reset($this->objects);
}
/**
* Returns the next Turba_Object in the list. Use this to hide internal
* implementation details from client objects.
*
* @return Turba_Object The next object in the list.
*/
function next()
{
list(,$tmp) = each($this->objects);
return $tmp;
}
/**
* Returns the number of Turba_Objects that are in the list. Use this to
* hide internal implementation details from client objects.
*
* @return integer The number of objects in the list.
*/
function count()
{
return count($this->objects);
}
/**
* Filters/Sorts the list based on the specified sort routine.
* The default sort order is by last name, ascending.
*
* @param $order Array of hashes describing sort fields. Each hash has
* the following fields:
* 'field' => String sort field
* 'ascending' => Boolean indicating sort direction
*/
function sort($order = null)
{
if (!$order) {
$order = array(array('field' => 'lastname', 'ascending' => true));
}
$need_lastname = false;
foreach ($order as $sort_order) {
if ($sort_order['field'] == 'lastname') {
$need_lastname = true;
break;
}
}
if (!$need_lastname) {
$sorted_objects = $this->objects;
} else {
$sorted_objects = array();
foreach ($this->objects as $key => $object) {
if (!$object->getValue('lastname')) {
$object->setValue(
'lastname',
Turba::guessLastname($object->getValue('name')));
}
$sorted_objects[$key] = $object;
}
}
$this->_usortCriteria = $order;
usort($sorted_objects, array($this, 'cmp'));
$this->objects = $sorted_objects;
}
/**
* Usort helper function.
*
* Compares two Turba_Objects based on the member variable
* $_usortCriteria, taking care to sort numerically if it is an integer
* field.
*
* @param Turba_Object $a The first Turba_Object to compare.
* @param Turba_Object $b The second Turba_Object to compare.
*
* @return integer Comparison of the two field values.
*/
function cmp($a, $b)
{
foreach ($this->_usortCriteria as $field) {
// Set the comparison type based on the type of attribute we're
// sorting by.
$usortType = 'text';
if (isset($attributes[$field['field']])) {
if (!empty($attributes[$field['field']]['cmptype'])) {
$usortType = $attributes[$field['field']]['cmptype'];
} elseif ($attributes[$field['field']]['type'] == 'int' ||
$attributes[$field['field']]['type'] == 'intlist'||
$attributes[$field['field']]['type'] == 'number') {
$usortType = 'int';
}
}
$method = 'cmp_' . $usortType;
$result = $this->$method($a->getValue($field['field']),
$b->getValue($field['field']));
if (!$field['ascending']) {
$result = -$result;
}
if ($result != 0) {
return $result;
}
}
return 0;
}
function cmp_text($a, $b)
{
$acmp = String::lower($a, true);
$bcmp = String::lower($b, true);
// Use strcoll for locale-safe comparisons.
return strcoll($acmp, $bcmp);
}
function cmp_int($a, $b)
{
return ($a > $b) ? 1 : -1;
}
}
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