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<?php
/**
* @version $Id$
* @package Koowa_Object
* @copyright Copyright (C) 2007 - 2012 Johan Janssens. All rights reserved.
* @license GNU GPLv3 <http://www.gnu.org/licenses/gpl.html>
* @link http://www.nooku.org
*/
/**
* An Object Array Class
*
* The KObjectArray class provides provides the main functionalities of array and at
* the same time implement the features of KObject
*
* @author Johan Janssens <johan@nooku.org>
* @category Koowa
* @package Koowa_Object
*/
class KObjectArray extends KObject implements IteratorAggregate, ArrayAccess, Serializable
{
/**
* The data for each key in the array (key => value).
*
* @var array
*/
protected $_data = array();
/**
* Constructor.
*
* @param object An optional KConfig object with configuration options
*/
public function __construct(KConfig $config = null)
{
//If no config is passed create it
if(!isset($config)) $config = new KConfig();
parent::__construct($config);
$this->_data = KConfig::unbox($config->data);
}
/**
* Initializes the options for the object
*
* Called from {@link __construct()} as a first step of object instantiation.
*
* @param object An optional KConfig object with configuration options
* @return void
*/
protected function _initialize(KConfig $config)
{
$config->append(array(
'data' => array(),
));
parent::_initialize($config);
}
/**
* Check if the offset exists
*
* Required by interface ArrayAccess
*
* @param int The offset
* @return bool
*/
public function offsetExists($offset)
{
return $this->__isset($offset);
}
/**
* Get an item from the array by offset
*
* Required by interface ArrayAccess
*
* @param int The offset
* @return mixed The item from the array
*/
public function offsetGet($offset)
{
return $this->__get($offset);
}
/**
* Set an item in the array
*
* Required by interface ArrayAccess
*
* @param int The offset of the item
* @param mixed The item's value
* @return object KObjectArray
*/
public function offsetSet($offset, $value)
{
if (is_null($offset)) {
$this->_data[] = $value;
} else {
$this->__set($offset, $value);
}
return $this;
}
/**
* Unset an item in the array
*
* All numerical array keys will be modified to start counting from zero while
* literal keys won't be touched.
*
* Required by interface ArrayAccess
*
* @param int The offset of the item
* @return object KObjectArray
*/
public function offsetUnset($offset)
{
$this->__unset($offset);
return $this;
}
/**
* Get a new iterator
*
* @return ArrayIterator
*/
public function getIterator()
{
return new ArrayIterator($this->_data);
}
/**
* Serialize
*
* Required by interface Serializable
*
* @return string A serialized object
*/
public function serialize()
{
return serialize($this->_data);
}
/**
* Unserialize
*
* Required by interface Serializable
*
* @param string An serialized data
*/
public function unserialize($data)
{
$this->_data = unserialize($data);
}
/**
* Get a value by key
*
* @param string The key name.
* @return string The corresponding value.
*/
public function __get($key)
{
$result = null;
if(isset($this->_data[$key])) {
$result = $this->_data[$key];
}
return $result;
}
/**
* Set a value by key
*
* @param string The key name.
* @param mixed The value for the key
* @return void
*/
public function __set($key, $value)
{
$this->_data[$key] = $value;
}
/**
* Test existence of a key
*
* @param string The key name.
* @return boolean
*/
public function __isset($key)
{
return array_key_exists($key, $this->_data);
}
/**
* Unset a key
*
* @param string The key name.
* @return void
*/
public function __unset($key)
{
unset($this->_data[$key]);
}
/**
* Return an associative array of the data.
*
* @return array
*/
public function toArray()
{
return $this->_data;
}
}
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