/**
* Creates the page collection.
*
* @param string $scrollingStyle Scrolling style
* @return stdClass
*/
protected function _createPages($scrollingStyle = null)
{
$pageCount = $this->count();
$currentPageNumber = $this->getCurrentPageNumber();
$pages = new stdClass();
$pages->pageCount = $pageCount;
$pages->itemCountPerPage = $this->getItemCountPerPage();
$pages->first = 1;
$pages->current = $currentPageNumber;
$pages->last = $pageCount;
// Previous and next
if ($currentPageNumber - 1 > 0) {
$pages->previous = $currentPageNumber - 1;
}
if ($currentPageNumber + 1 <= $pageCount) {
$pages->next = $currentPageNumber + 1;
}
// Pages in range
$scrollingStyle = $this->_loadScrollingStyle($scrollingStyle);
$pages->pagesInRange = $scrollingStyle->getPages($this);
$pages->firstPageInRange = min($pages->pagesInRange);
$pages->lastPageInRange = max($pages->pagesInRange);
// Item numbers
if ($this->getCurrentItems() !== null) {
$pages->currentItemCount = $this->getCurrentItemCount();
$pages->totalItemCount = $this->_adapter->count();
$pages->firstItemNumber = ($currentPageNumber - 1) * $this->_itemCountPerPage + 1;
$pages->lastItemNumber = $pages->firstItemNumber + $pages->currentItemCount - 1;
}
return $pages;
}
/**
* Returns the items for a given page.
*
* @return Traversable
*/
public function getItemsByPage($pageNumber)
{
$pageNumber = $this->normalizePageNumber($pageNumber);
if ($this->_cacheEnabled()) {
$data = self::$_cache->load($this->_getCacheId($pageNumber));
if ($data !== false) {
return $data;
}
}
$offset = ($pageNumber - 1) * $this->getItemCountPerPage();
$items = $this->_adapter->getItems($offset, $this->getItemCountPerPage());
$filter = $this->getFilter();
if ($filter !== null) {
$items = $filter->filter($items);
}
if (!$items instanceof Traversable) {
$items = new ArrayIterator($items);
}
if ($this->_cacheEnabled()) {
self::$_cache->save($items, $this->_getCacheId($pageNumber), array($this->_getCacheInternalId()));
}
return $items;
}
/**
* Constructor.
*
* @param Zend_Paginator_Adapter_Interface|\Zend\Paginator\AdapterAggregate $adapter
*/
public function __construct($adapter)
{
if ($adapter instanceof Adapter) {
$this->_adapter = $adapter;
} else {
if ($adapter instanceof AdapterAggregate) {
$this->_adapter = $adapter->getPaginatorAdapter();
} else {
throw new Exception\InvalidArgumentException('Zend_Paginator only accepts instances of the type ' . 'Zend_Paginator_Adapter_Interface or Zend_Paginator_AdapterAggregate.');
}
}
$config = self::$_config;
if ($config != null) {
$setupMethods = array('ItemCountPerPage', 'PageRange');
foreach ($setupMethods as $setupMethod) {
$value = $config->get(strtolower($setupMethod));
if ($value != null) {
$setupMethod = 'set' . $setupMethod;
$this->{$setupMethod}($value);
}
}
}
}
/**
* Calculates the page count.
*
* @return integer
*/
protected function _calculatePageCount()
{
return (int) ceil($this->_adapter->count() / $this->_itemCountPerPage);
}
