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- <?php
- /**
- * @file
- * Contains TMGMTJobItemUICart.
- */
- /**
- * Represents a job item cart.
- *
- * @ingroup tmgmt_ui_cart
- */
- class TMGMTJobItemUICart {
- /**
- * Singleton instance of cart.
- */
- protected static $instance;
- /**
- * Array key to store the contents of $this->cart into the $_SESSION variable.
- *
- * @var string
- */
- protected $session_key = 'tmgmt_cart';
- /**
- * An array to hold and manipulate the contents of the job item cart.
- *
- * @var array
- */
- protected $cart;
- /**
- * Set up a new TMGMTJobItemUICart instance.
- *
- * Will load the cart from the session or initialize a new one if nothing has
- * been stored yet.
- */
- protected function __construct() {
- if (!isset($_SESSION[$this->session_key])) {
- $_SESSION[$this->session_key] = array();
- }
- $this->cart = &$_SESSION[$this->session_key];
- }
- /**
- * Returns the singleton cart.
- *
- * @return TMGMTJobItemUICart
- * An instance of the cart.
- */
- public static function getInstance() {
- if (!isset(self::$instance)) {
- self::$instance = new self();
- }
- return self::$instance;
- }
- /**
- * Adds existing job items into the cart.
- *
- * @param TMGMTJobItem[] $items
- * Job items to be added.
- */
- public function addExistingJobItems(array $items) {
- foreach ($items as $item) {
- if (!$this->isSourceItemAdded($item->plugin, $item->item_type, $item->item_id)) {
- $this->cart[] = $item->tjiid;
- }
- }
- }
- /**
- * Creates a job item and adds it into the cart.
- *
- * @param string $plugin
- * The source plugin.
- * @param string $item_type
- * The source item type.
- * @param $item_id
- * The source item id.
- *
- * @return TMGMTJobItem|null
- * Added job item. If the item exists NULL is returned.
- */
- public function addJobItem($plugin, $item_type, $item_id) {
- if ($this->isSourceItemAdded($plugin, $item_type, $item_id)) {
- return NULL;
- }
- $job_item = tmgmt_job_item_create($plugin, $item_type, $item_id);
- $job_item->save();
- $this->cart[] = $job_item->tjiid;
- return $job_item;
- }
- /**
- * Checks if the source item has been added into the cart.
- *
- * @param string $plugin
- * The source plugin.
- * @param string $item_type
- * The source type.
- * @param int $source_id
- * The source id.
- *
- * @return bool
- * If the source item is in the cart.
- */
- public function isSourceItemAdded($plugin, $item_type, $source_id) {
- foreach ($this->getJobItemsFromCart() as $job_item) {
- if ($job_item->item_id == $source_id && $job_item->item_type == $item_type && $job_item->plugin == $plugin) {
- return TRUE;
- }
- }
- return FALSE;
- }
- /**
- * Remove job items from the cart.
- *
- * @param array $job_item_ids
- * Job items to be removed.
- */
- public function removeJobItems(array $job_item_ids) {
- $this->cart = array_diff($this->cart, $job_item_ids);
- }
- /**
- * Gets job items in the cart.
- *
- * @return TMGMTJobItem[] $items
- * Job items in the cart.
- */
- public function getJobItemsFromCart() {
- return entity_load('tmgmt_job_item', $this->cart);
- }
- /**
- * Gets count of items in the cart.
- *
- * @return int
- * Number of items in the cart.
- */
- public function count() {
- return count($this->cart);
- }
- /**
- * Remove all contents from the cart.
- */
- public function emptyCart() {
- $this->cart = array();
- }
- }
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