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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
/**
* New products widget pager block
*
* @author Magento Core Team <[email protected]>
*/
namespace Magento\Catalog\Block\Product\Widget\Html;
class Pager extends \Magento\Theme\Block\Html\Pager
{
/**
* Collection size
*
* Size of collection which may has a manual limitation
*
* @var int
*/
protected $_collectionSize;
/**
* Current page
*
* @var int
*/
protected $_currentPage;
/**
* Last page
*
* @var int
*/
protected $_lastPage;
/**
* Return collection size
*
* It may be limited by manual
*
* @return int
*/
public function getCollectionSize()
{
if (null === $this->_collectionSize) {
$this->_collectionSize = $this->getCollection()->getSize();
if ($this->getTotalLimit() && $this->_collectionSize > $this->getTotalLimit()) {
$this->_collectionSize = $this->getTotalLimit();
}
}
return $this->_collectionSize;
}
/**
* Return number of current page
*
* If current page is grate then total count of page current page will be equals total count of page
*
* @return int
*/
public function getCurrentPage()
{
if (null === $this->_currentPage) {
$page = abs((int)$this->getRequest()->getParam($this->getPageVarName()));
if ($page > $this->getLastPageNum()) {
$this->_currentPage = $this->getLastPageNum();
} elseif ($page > 0) {
$this->_currentPage = $page;
} else {
$this->_currentPage = 1;
}
}
return $this->_currentPage;
}
/**
* Return items count per page
*
* @return int
*/
public function getLimit()
{
if ($this->_limit > 0) {
return $this->_limit;
}
$limit = $this->getRequest()->getParam($this->getLimitVarName());
$limits = $this->getAvailableLimit();
if ($limit && isset($limits[$limit])) {
return $limit;
}
$limits = array_keys($limits);
return current($limits);
}
/**
* Connect collection to paging
*
* @param \Magento\Framework\Model\ResourceModel\Db\Collection\AbstractCollection $collection
* @return \Magento\Catalog\Block\Product\Widget\Html\Pager
*/
public function setCollection($collection)
{
$this->_collection = $collection;
$this->_collection->setPageSize(null)->setCurPage(null);
$collectionOffset = $this->getFirstNum() - 1;
$collectionLimit = $collectionOffset + $this->getLimit() >
$this->getTotalNum() ? $this->getTotalNum() - $collectionOffset : $this->getLimit();
$this->_collection->getSelect()->limit($collectionLimit, $collectionOffset);
$this->_setFrameInitialized(false);
return $this;
}
/**
* Return position number in collection for first item on current page
*
* @return int
*/
public function getFirstNum()
{
return $this->getLimit() * ($this->getCurrentPage() - 1) + 1;
}
/**
* Return position number in collection for last item on current page
*
* @return int
*/
public function getLastNum()
{
$collection = $this->getCollection();
return $this->getLimit() * ($this->getCurrentPage() - 1) + $collection->count();
}
/**
* Return total number of collection
*
* It may be limited by manual
*
* @return int
*/
public function getTotalNum()
{
return $this->getCollectionSize();
}
/**
* Return number of last page
*
* @return bool
* @SuppressWarnings(PHPMD.BooleanGetMethodName)
*/
public function getLastPageNum()
{
if (null === $this->_lastPage) {
$this->_lastPage = ceil($this->getCollectionSize() / $this->getLimit());
if ($this->_lastPage <= 0) {
$this->_lastPage = 1;
}
}
return $this->_lastPage;
}
/**
* Checks if current page is the first page
*
* @return bool
*/
public function isFirstPage()
{
return $this->getCurrentPage() == 1;
}
/**
* Checks if current page is the last page
*
* @return bool
*/
public function isLastPage()
{
return $this->getCurrentPage() >= $this->getLastPageNum();
}
/**
* Return array of pages
*
* @return array
*/
public function getPages()
{
$pages = [];
if ($this->getLastPageNum() <= $this->_displayPages) {
$pages = range(1, $this->getLastPageNum());
} else {
$half = ceil($this->_displayPages / 2);
if ($this->getCurrentPage() >= $half && $this->getCurrentPage() <= $this->getLastPageNum() - $half) {
$start = $this->getCurrentPage() - $half + 1;
$finish = $start + $this->_displayPages - 1;
} elseif ($this->getCurrentPage() < $half) {
$start = 1;
$finish = $this->_displayPages;
} elseif ($this->getCurrentPage() > $this->getLastPageNum() - $half) {
$finish = $this->getLastPageNum();
$start = $finish - $this->_displayPages + 1;
}
$pages = range($start, $finish);
}
return $pages;
}
/**
* Retrieve url for previous page
*
* @return string
*/
public function getPreviousPageUrl()
{
return $this->getPageUrl($this->getCurrentPage() - 1);
}
/**
* Retrieve url for next page
*
* @return string
*/
public function getNextPageUrl()
{
return $this->getPageUrl($this->getCurrentPage() + 1);
}
/**
* Retrieve url for last page
*
* @return string
*/
public function getLastPageUrl()
{
return $this->getPageUrl($this->getLastPageNum());
}
/**
* Initialize frame data, such as frame start, frame start etc.
*
* @return \Magento\Catalog\Block\Product\Widget\Html\Pager
*/
protected function _initFrame()
{
if (!$this->isFrameInitialized()) {
$start = 0;
$end = 0;
if ($this->getLastPageNum() <= $this->getFrameLength()) {
$start = 1;
$end = $this->getLastPageNum();
} else {
$half = ceil($this->getFrameLength() / 2);
if ($this->getCurrentPage() >= $half && $this->getCurrentPage() <= $this->getLastPageNum() - $half) {
$start = $this->getCurrentPage() - $half + 1;
$end = $start + $this->getFrameLength() - 1;
} elseif ($this->getCurrentPage() < $half) {
$start = 1;
$end = $this->getFrameLength();
} elseif ($this->getCurrentPage() > $this->getLastPageNum() - $half) {
$end = $this->getLastPageNum();
$start = $end - $this->getFrameLength() + 1;
}
}
$this->_frameStart = $start;
$this->_frameEnd = $end;
$this->_setFrameInitialized(true);
}
return $this;
}
}