<?php /** * Zend Framework * * LICENSE * * This source file is subject to the new BSD license that is bundled * with this package in the file LICENSE.txt. * It is also available through the world-wide-web at this URL: * http://framework.zend.com/license/new-bsd * If you did not receive a copy of the license and are unable to * obtain it through the world-wide-web, please send an email * to license@zend.com so we can send you a copy immediately. * * @category Zend * @package Zend_Service_Rackspace * @subpackage Servers * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com) * @license http://framework.zend.com/license/new-bsd New BSD License */ require_once 'Zend/Service/Rackspace/Servers.php'; require_once 'Zend/Service/Rackspace/Servers/Image.php'; /** * List of images of Rackspace * * @uses ArrayAccess * @uses Countable * @uses Iterator * @uses Zend_Service_Rackspace_Servers * @category Zend * @package Zend_Service_Rackspace * @subpackage Servers * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com) * @license http://framework.zend.com/license/new-bsd New BSD License */ class Zend_Service_Rackspace_Servers_ImageList implements Countable, Iterator, ArrayAccess { /** * @var array of Zend_Service_Rackspace_Servers_Image */ protected $images = array(); /** * @var int Iterator key */ protected $iteratorKey = 0; /** * @var Zend_Service_Rackspace_Servers */ protected $service; /** * Construct * * @param RackspaceServers $service * @param array $list * @return void */ public function __construct($service,$list = array()) { if (!($service instanceof Zend_Service_Rackspace_Servers) || !is_array($list)) { require_once 'Zend/Service/Rackspace/Servers/Exception.php'; throw new Zend_Service_Rackspace_Servers_Exception("You must pass a Zend_Service_Rackspace_Servers object and an array"); } $this->service= $service; $this->constructFromArray($list); } /** * Transforms the array to array of Server * * @param array $list * @return void */ private function constructFromArray(array $list) { foreach ($list as $image) { $this->addImage(new Zend_Service_Rackspace_Servers_Image($this->service,$image)); } } /** * Add an image * * @param Zend_Service_Rackspace_Servers_Image $image * @return Zend_Service_Rackspace_Servers_ImageList */ protected function addImage (Zend_Service_Rackspace_Servers_Image $image) { $this->images[] = $image; return $this; } /** * To Array * * @return array */ public function toArray() { $array= array(); foreach ($this->images as $image) { $array[]= $image->toArray(); } return $array; } /** * Return number of images * * Implement Countable::count() * * @return int */ public function count() { return count($this->images); } /** * Return the current element * * Implement Iterator::current() * * @return Zend_Service_Rackspace_Servers_Image */ public function current() { return $this->images[$this->iteratorKey]; } /** * Return the key of the current element * * Implement Iterator::key() * * @return int */ public function key() { return $this->iteratorKey; } /** * Move forward to next element * * Implement Iterator::next() * * @return void */ public function next() { $this->iteratorKey += 1; } /** * Rewind the Iterator to the first element * * Implement Iterator::rewind() * * @return void */ public function rewind() { $this->iteratorKey = 0; } /** * Check if there is a current element after calls to rewind() or next() * * Implement Iterator::valid() * * @return bool */ public function valid() { $numItems = $this->count(); if ($numItems > 0 && $this->iteratorKey < $numItems) { return true; } else { return false; } } /** * Whether the offset exists * * Implement ArrayAccess::offsetExists() * * @param int $offset * @return bool */ public function offsetExists($offset) { return ($offset < $this->count()); } /** * Return value at given offset * * Implement ArrayAccess::offsetGet() * * @param int $offset * @throws Zend_Service_Rackspace_Servers_Exception * @return Zend_Service_Rackspace_Servers_Image */ public function offsetGet($offset) { if ($this->offsetExists($offset)) { return $this->images[$offset]; } else { require_once 'Zend/Service/Rackspace/Servers/Exception.php'; throw new Zend_Service_Rackspace_Servers_Exception('Illegal index'); } } /** * Throws exception because all values are read-only * * Implement ArrayAccess::offsetSet() * * @param int $offset * @param string $value * @throws Zend_Service_Rackspace_Servers_Exception */ public function offsetSet($offset, $value) { require_once 'Zend/Service/Rackspace/Servers/Exception.php'; throw new Zend_Service_Rackspace_Servers_Exception('You are trying to set read-only property'); } /** * Throws exception because all values are read-only * * Implement ArrayAccess::offsetUnset() * * @param int $offset * @throws Zend_Service_Rackspace_Servers_Exception */ public function offsetUnset($offset) { require_once 'Zend/Service/Rackspace/Servers/Exception.php'; throw new Zend_Service_Rackspace_Servers_Exception('You are trying to unset read-only property'); } }