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<?php |
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/** |
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* Renderer.php - Paginator renderer |
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* |
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* Render pagination links. |
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* |
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* @package jaxon-core |
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* @author Thierry Feuzeu <[email protected]> |
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* @copyright 2016 Thierry Feuzeu <[email protected]> |
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* @license https://opensource.org/licenses/BSD-3-Clause BSD 3-Clause License |
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* @link https://github.com/jaxon-php/jaxon-core |
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*/ |
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namespace Jaxon\Utils\Pagination; |
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use Jaxon\Contracts\Template\Renderer as TemplateRenderer; |
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use Jaxon\Request\Factory\Request; |
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use Jaxon\Request\Factory\Parameter; |
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class Renderer |
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{ |
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/** |
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* The template renderer. |
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* |
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* Will be used to render HTML code for links. |
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* |
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* @var TemplateRenderer |
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*/ |
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protected $xRenderer = null; |
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/** |
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* The Jaxon request to be paginated |
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* |
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* @var Request |
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*/ |
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protected $xRequest = null; |
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/** |
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* @var string |
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*/ |
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protected $previousText = '«'; |
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/** |
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* @var string |
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*/ |
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protected $nextText = '»'; |
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/** |
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* @var string |
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*/ |
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protected $ellipsysText = '...'; |
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/** |
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* @var integer |
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*/ |
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protected $totalPages = 0; |
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/** |
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* @var integer |
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*/ |
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protected $currentPage = 0; |
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/** |
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* The class contructor |
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* |
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* @param TemplateRenderer $xRenderer |
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*/ |
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public function __construct(TemplateRenderer $xRenderer) |
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{ |
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$this->xRenderer = $xRenderer; |
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} |
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/** |
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* Set the text for the previous page link |
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* |
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* @param string $text The text for the previous page link |
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* |
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* @return void |
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*/ |
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public function setPreviousText($text) |
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{ |
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$this->previousText = $text; |
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} |
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/** |
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* Set the text for the next page link |
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* |
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* @param string $text The text for the previous page link |
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* |
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* @return void |
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*/ |
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public function setNextText($text) |
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{ |
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$this->nextText = $text; |
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} |
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/** |
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* Set the request to be paginated |
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* |
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* @param Request $xRequest The request to be paginated |
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* |
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* @return void |
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*/ |
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public function setRequest(Request $xRequest) |
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{ |
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$this->xRequest = $xRequest; |
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// Append the page number to the parameter list, if not yet given. |
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if(($this->xRequest) && !$this->xRequest->hasPageNumber()) |
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{ |
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$this->xRequest->addParameter(Parameter::PAGE_NUMBER, 0); |
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} |
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} |
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/** |
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* Get the js call to a given page |
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* |
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* @param int $pageNum The page number |
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* |
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* @return string |
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*/ |
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protected function getPageCall($pageNum) |
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{ |
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return $this->xRequest->setPageNumber($pageNum)->getScript(); |
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} |
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/** |
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* Render the previous link. |
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* |
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* @param integer $nNumber The page number |
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* @param string $sTemplate The template for the call to the page |
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* @param string $sEnabledText The text of the link if it is enabled |
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* @param string $sDisabledText The text of the link if it is disabled |
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* |
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* @return string |
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*/ |
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protected function getLink($nNumber, $sTemplate, $sEnabledText, $sDisabledText) |
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{ |
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if($nNumber > 0) |
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{ |
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return $this->xRenderer->render('pagination::links/' . $sTemplate, [ |
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'text' => $sEnabledText, |
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'call' => $this->getPageCall($nNumber), |
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]); |
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} |
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return $this->xRenderer->render('pagination::links/disabled', ['text' => $sDisabledText]); |
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} |
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/** |
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* Render the previous link. |
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* |
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* @return string |
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*/ |
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protected function getPrevLink() |
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{ |
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$nNumber = ($this->currentPage > 1 ? $this->currentPage - 1 : 0); |
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return $this->getLink($nNumber, 'prev', $this->previousText, $this->previousText); |
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} |
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/** |
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* Render the next link. |
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* |
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* @return string |
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*/ |
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protected function getNextLink() |
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{ |
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$nNumber = ($this->currentPage < $this->totalPages ? $this->currentPage + 1 : 0); |
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return $this->getLink($nNumber, 'next', $this->nextText, $this->nextText); |
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} |
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/** |
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* Render the pagination links. |
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* |
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* @param integer $nNumber The page number |
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* |
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* @return string |
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*/ |
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protected function getPageLink($nNumber) |
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{ |
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$sTemplate = ($nNumber == $this->currentPage ? 'current' : 'enabled'); |
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return $this->getLink($nNumber, $sTemplate, $nNumber, $this->ellipsysText); |
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} |
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/** |
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* Render an HTML pagination control. |
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* |
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* @param array $aPageNumbers The page numbers to be rendered |
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* @param integer $currentPage The current page number |
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* @param integer $totalPages The total number of pages |
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* |
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* @return string |
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*/ |
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public function render(array $aPageNumbers, $currentPage, $totalPages) |
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{ |
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$this->currentPage = $currentPage; |
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$this->totalPages = $totalPages; |
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$aLinks = array_map(function($nNumber) { |
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return $this->getPageLink($nNumber); |
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}, $aPageNumbers); |
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return $this->xRenderer->render('pagination::wrapper', [ |
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'links' => $aLinks, |
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'prev' => $this->getPrevLink(), |
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'next' => $this->getNextLink(), |
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]); |
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} |
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} |
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