173 lines
3.0 KiB
PHP
173 lines
3.0 KiB
PHP
<?php
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/**
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* VObject ElementList
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*
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* This class represents a list of elements. Lists are the result of queries,
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* such as doing $vcalendar->vevent where there's multiple VEVENT objects.
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*
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* @package Sabre
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* @subpackage VObject
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* @copyright Copyright (C) 2007-2011 Rooftop Solutions. All rights reserved.
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* @author Evert Pot (http://www.rooftopsolutions.nl/)
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* @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
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*/
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class Sabre_VObject_ElementList implements Iterator, Countable, ArrayAccess {
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/**
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* Inner elements
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*
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* @var array
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*/
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protected $elements = array();
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/**
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* Creates the element list.
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*
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* @param array $elements
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*/
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public function __construct(array $elements) {
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$this->elements = $elements;
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}
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/* {{{ Iterator interface */
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/**
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* Current position
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*
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* @var int
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*/
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private $key = 0;
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/**
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* Returns current item in iteration
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*
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* @return Sabre_VObject_Element
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*/
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public function current() {
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return $this->elements[$this->key];
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}
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/**
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* To the next item in the iterator
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*
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* @return void
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*/
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public function next() {
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$this->key++;
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}
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/**
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* Returns the current iterator key
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*
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* @return int
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*/
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public function key() {
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return $this->key;
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}
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/**
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* Returns true if the current position in the iterator is a valid one
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*
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* @return bool
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*/
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public function valid() {
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return isset($this->elements[$this->key]);
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}
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/**
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* Rewinds the iterator
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*
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* @return void
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*/
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public function rewind() {
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$this->key = 0;
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}
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/* }}} */
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/* {{{ Countable interface */
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/**
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* Returns the number of elements
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*
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* @return int
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*/
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public function count() {
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return count($this->elements);
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}
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/* }}} */
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/* {{{ ArrayAccess Interface */
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/**
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* Checks if an item exists through ArrayAccess.
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*
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* @param int $offset
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* @return bool
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*/
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public function offsetExists($offset) {
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return isset($this->elements[$offset]);
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}
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/**
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* Gets an item through ArrayAccess.
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*
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* @param int $offset
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* @return mixed
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*/
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public function offsetGet($offset) {
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return $this->elements[$offset];
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}
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/**
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* Sets an item through ArrayAccess.
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*
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* @param int $offset
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* @param mixed $value
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* @return void
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*/
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public function offsetSet($offset,$value) {
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throw new LogicException('You can not add new objects to an ElementList');
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}
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/**
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* Sets an item through ArrayAccess.
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*
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* This method just forwards the request to the inner iterator
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*
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* @param int $offset
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* @return void
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*/
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public function offsetUnset($offset) {
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throw new LogicException('You can not remove objects from an ElementList');
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}
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/* }}} */
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}
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