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<?php |
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/** |
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* PaginatorPlugin.php - The Jaxon Paginator plugin |
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* |
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* @package jaxon-core |
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* @copyright 2024 Thierry Feuzeu |
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* @license https://opensource.org/licenses/MIT MIT License |
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* @link https://github.com/jaxon-php/jaxon-core |
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*/ |
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namespace Jaxon\Plugin\Response\Pagination; |
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use Jaxon\App\View\ViewRenderer; |
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use Jaxon\App\View\Store; |
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use Jaxon\Plugin\ResponsePlugin; |
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use Jaxon\Request\Call\Call; |
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use Jaxon\Request\Call\Parameter; |
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use function array_map; |
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use function array_pop; |
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use function array_shift; |
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use function count; |
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use function trim; |
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/** |
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* Usage |
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* |
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* Step 1: Render a template containing a wrapper for the pagination. |
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* |
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* $html = $this->render($pageTemplate, [ |
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* // ... |
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* ]); |
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* |
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* Step 2: Create a paginator and render the pagination into the wrapper. |
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* |
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* $this->response->pg->paginator($pageNumber, $perPage, $total) |
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* ->paginate($this->rq()->page(), $wrapperId); |
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* // Or, using the response shortcut |
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* $this->response->paginator($pageNumber, $perPage, $total) |
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* ->paginate($this->rq()->page(), $wrapperId); |
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* // Or, in a class that inherits from CallableClass |
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* $this->paginator($pageNumber, $perPage, $total) |
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* ->paginate($this->rq()->page(), $wrapperId); |
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*/ |
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class PaginatorPlugin extends ResponsePlugin |
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{ |
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/** |
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* @const The plugin name |
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*/ |
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const NAME = 'pg'; |
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/** |
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* @var ViewRenderer |
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*/ |
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protected $xRenderer; |
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/** |
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* The constructor. |
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* |
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* @param ViewRenderer $xRenderer |
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*/ |
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public function __construct(ViewRenderer $xRenderer) |
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{ |
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$this->xRenderer = $xRenderer; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function getName(): string |
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{ |
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return self::NAME; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function getHash(): string |
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{ |
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// Use the version number as hash |
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return '5.0.0'; |
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} |
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/** |
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* @param array<Page> $aPages |
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* |
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* @return null|Store |
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*/ |
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private function _render(array $aPages): ?Store |
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{ |
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$aPages = array_map(function($xPage) { |
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return $this->xRenderer->render('pagination::links/' . $xPage->sType, [ |
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'page' => $xPage->nNumber, |
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'text' => $xPage->sText, |
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]); |
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}, $aPages); |
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$aPrevPage = array_shift($aPages); // The first entry in the array |
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$aNextPage = array_pop($aPages); // The last entry in the array |
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return $this->xRenderer->render('pagination::wrapper', [ |
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'links' => $aPages, |
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'prev' => $aPrevPage, |
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'next' => $aNextPage, |
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]); |
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} |
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/** |
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* Create a paginator |
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* |
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* @param int $nCurrentPage The current page number |
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* @param int $nItemsPerPage The number of items per page |
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* @param int $nTotalItems The total number of items |
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* |
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* @return Paginator |
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*/ |
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public function paginator(int $nCurrentPage, int $nItemsPerPage, int $nTotalItems): Paginator |
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{ |
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return new Paginator($this, $nCurrentPage, $nItemsPerPage, $nTotalItems); |
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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 Paginator $xPaginator |
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* @param Call $xCall |
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* @param string $sWrapperId |
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* |
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* @return void |
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*/ |
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public function render(Paginator $xPaginator, Call $xCall, string $sWrapperId) |
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{ |
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$aPages = $xPaginator->pages(); |
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if(count($aPages) === 0) |
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{ |
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return; |
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} |
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$xStore = $this->_render($aPages); |
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if(!$xStore) |
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{ |
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return; |
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} |
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// Append the page number to the parameter list, if not yet given. |
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if(!$xCall->hasPageNumber()) |
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{ |
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$xCall->addParameter(Parameter::PAGE_NUMBER, 0); |
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} |
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// Show the pagination links |
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$sWrapperId = trim($sWrapperId); |
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$this->response()->html($sWrapperId, $xStore->__toString()); |
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// Set click handlers on the pagination links |
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$this->addCommand('pg.paginate', [ |
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'id' => $sWrapperId, |
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'func' => $xCall->toArray(), |
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]); |
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} |
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} |
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