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ElementList.php
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ElementList.php
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<?php
namespace Sabre\VObject;
/**
* VObject ElementList
*
* This class represents a list of elements. Lists are the result of queries,
* such as doing $vcalendar->vevent where there's multiple VEVENT objects.
*
* @copyright Copyright (C) 2011-2015 fruux GmbH (https://fruux.com/).
* @author Evert Pot (http://evertpot.com/)
* @license http://sabre.io/license/ Modified BSD License
*/
class ElementList implements \Iterator, \Countable, \ArrayAccess {
/**
* Inner elements
*
* @var array
*/
protected $elements = array();
/**
* Creates the element list.
*
* @param array $elements
*/
public function __construct(array $elements) {
$this->elements = $elements;
}
/* {{{ Iterator interface */
/**
* Current position
*
* @var int
*/
private $key = 0;
/**
* Returns current item in iteration
*
* @return Element
*/
public function current() {
return $this->elements[$this->key];
}
/**
* To the next item in the iterator
*
* @return void
*/
public function next() {
$this->key++;
}
/**
* Returns the current iterator key
*
* @return int
*/
public function key() {
return $this->key;
}
/**
* Returns true if the current position in the iterator is a valid one
*
* @return bool
*/
public function valid() {
return isset($this->elements[$this->key]);
}
/**
* Rewinds the iterator
*
* @return void
*/
public function rewind() {
$this->key = 0;
}
/* }}} */
/* {{{ Countable interface */
/**
* Returns the number of elements
*
* @return int
*/
public function count() {
return count($this->elements);
}
/* }}} */
/* {{{ ArrayAccess Interface */
/**
* Checks if an item exists through ArrayAccess.
*
* @param int $offset
* @return bool
*/
public function offsetExists($offset) {
return isset($this->elements[$offset]);
}
/**
* Gets an item through ArrayAccess.
*
* @param int $offset
* @return mixed
*/
public function offsetGet($offset) {
return $this->elements[$offset];
}
/**
* Sets an item through ArrayAccess.
*
* @param int $offset
* @param mixed $value
* @return void
*/
public function offsetSet($offset, $value) {
throw new \LogicException('You can not add new objects to an ElementList');
}
/**
* Sets an item through ArrayAccess.
*
* This method just forwards the request to the inner iterator
*
* @param int $offset
* @return void
*/
public function offsetUnset($offset) {
throw new \LogicException('You can not remove objects from an ElementList');
}
/* }}} */
}

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