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<?php |
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namespace Azine\EmailBundle\Services; |
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use Symfony\Bundle\FrameworkBundle\Routing\Router; |
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use Symfony\Component\HttpFoundation\RequestStack; |
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class PaginationView |
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{ |
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/** |
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* @var Pagination |
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*/ |
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protected $pagination; |
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/** |
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* @var Router |
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*/ |
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protected $router; |
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/** |
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* @var string CSS class name for list. |
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*/ |
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protected $listCssClass = 'pagination'; |
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/** |
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* @var array Parameter list for each pagination link. |
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*/ |
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protected $linkOptions = []; |
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/** |
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* @var string CSS class name for first page button. |
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*/ |
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public $firstPageCssClass = 'first'; |
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/** |
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* @var string CSS class name for last page button. |
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*/ |
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public $lastPageCssClass = 'last'; |
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/** |
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* @var string CSS class name for previous page button. |
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*/ |
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public $prevPageCssClass = 'prev'; |
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/** |
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* @var string CSS class name for next page button. |
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*/ |
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public $nextPageCssClass = 'next'; |
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/** |
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* @var string CSS class name for active page button |
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*/ |
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public $activePageCssClass = 'active'; |
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/** |
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* @var string CSS class for disabled page button. |
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*/ |
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public $disabledPageCssClass = 'disabled'; |
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/** |
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* @var int Max number of buttons to show. |
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*/ |
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public $maxButtonCount = 10; |
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/** |
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* @var bool Whether to show a link to the first page. |
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*/ |
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public $showFirstPageLink = false; |
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/** |
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* @var bool Whether to show a link to the last page |
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*/ |
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public $showLastPageLink = false; |
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/** |
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* @var bool Whether to show a link to the previous page. |
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*/ |
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public $showPrevPageLink = true; |
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/** |
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* @var bool Whether to show a link to the next page |
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*/ |
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public $showNextPageLink = true; |
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/** |
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* @var string Next page default label. Will be used if [[showNextPageLink]] |
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* set to true. |
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*/ |
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public $nextPageLabel = '›'; |
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/** |
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* @var string Precious page default label. Will be used if |
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* [[showPrevPageLink]] set to true. |
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*/ |
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public $prevPageLabel = '‹'; |
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/** |
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* @var string First page default label. Will be used if |
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* [[showFirstPageLink]] set to true. |
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*/ |
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public $firstPageLabel = '«'; |
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/** |
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* @var string Last page default label. Will be used if |
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* [[showLastPageLink]] set to true. |
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*/ |
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public $lastPageLabel = '»'; |
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/** |
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* PaginationView constructor. |
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* |
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* @param RequestStack $request |
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* @param Router $router |
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*/ |
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public function __construct( |
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RequestStack $request, |
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Router $router |
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) { |
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$currentRequest = $request->getCurrentRequest(); |
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if ($currentRequest) { |
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$this->queryParameters = $currentRequest->query->all(); |
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} |
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$this->router = $router; |
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} |
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/** |
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* Render pagination block. |
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* |
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* @return string |
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* @throws \Exception |
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*/ |
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public function renderPageButtons() |
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{ |
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if (!$this->pagination) { |
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throw new \Exception( |
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'Instance of ' . Pagination::class . ' should be specified.' |
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); |
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} |
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$pageCount = $this->pagination->getPageCount(); |
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if ($pageCount < 2) { |
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return ''; |
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} |
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$buttons = []; |
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$currentPage = $this->pagination->getCurrentPage(); |
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if ($this->showFirstPageLink) { |
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$buttons[] = $this->createPageButton( |
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$this->firstPageLabel, |
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0, |
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$this->firstPageCssClass, |
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$currentPage <= 0, |
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false |
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); |
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} |
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if ($this->showPrevPageLink) { |
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$buttons[] = $this->createPageButton( |
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$this->prevPageLabel, |
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max(0, $currentPage - 1), |
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$this->prevPageCssClass, |
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$currentPage <= 0, |
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false |
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); |
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} |
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list($startPage, $endPage) = $this->getPageRange(); |
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for ($i = $startPage; $i <= $endPage; ++$i) { |
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$buttons[] = $this->createPageButton( |
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$i + 1, |
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$i, |
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null, |
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false, |
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$i == $currentPage |
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); |
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} |
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if ($this->showNextPageLink) { |
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$buttons[] = $this->createPageButton( |
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$this->nextPageLabel, |
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min($currentPage + 1, $pageCount - 1), |
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$this->nextPageCssClass, |
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$currentPage >= $pageCount - 1, |
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false |
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); |
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} |
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if ($this->showLastPageLink) { |
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$buttons[] = $this->createPageButton( |
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$this->lastPageLabel, |
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$pageCount - 1, |
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$this->lastPageCssClass, |
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$currentPage >= $pageCount - 1, |
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false |
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); |
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} |
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return '<ul class = "'.$this->listCssClass .'">' |
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.implode("\n", $buttons).'</ul>'; |
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} |
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/** |
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* Render single pagination block button. |
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* |
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* @param string $label |
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* @param int $page |
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* @param string $class |
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* @param bool $disabled |
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* @param bool $active |
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* |
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* @return string |
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*/ |
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protected function createPageButton( |
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$label, |
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$page, |
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$class, |
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$disabled, |
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$active |
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) { |
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$buttonClassList = [$class]; |
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if ($active) { |
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array_push($buttonClassList, $this->activePageCssClass); |
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} |
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if ($disabled) { |
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array_push($buttonClassList, $this->disabledPageCssClass); |
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} |
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$link = '<a href="' |
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.$this->createButtonLink($page, $this->pagination->getPageSize()) |
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.'">'.$label.'</a>'; |
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return '<li '.$this->prepareClassAttribute($buttonClassList).'>'.$link |
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.'</li>'; |
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} |
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/** |
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* Create link for pagination button. |
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* |
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* @param int $pageIndex |
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* @param int $pageSize |
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* @param bool $absoluteUrl |
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* |
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* @return string |
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*/ |
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public function createButtonLink($pageIndex, $pageSize, $absoluteUrl = true) |
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{ |
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$pageParamName = $this->pagination->getPageParamName(); |
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$pageSizeParamName = $this->pagination->getPageSizeParam(); |
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if ($pageIndex > 0) { |
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$this->queryParameters[$pageParamName] = $pageIndex + 1; |
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} else { |
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unset($this->queryParameters[$pageParamName]); |
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} |
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if ($pageSize != $this->pagination->getDefaultPageSize()) { |
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$this->queryParameters[$pageSizeParamName] = $pageSize; |
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} else { |
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unset($this->queryParameters[$pageSizeParamName]); |
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} |
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return $this->router->generate( |
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$this->pagination->getRoute(), |
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$this->queryParameters, |
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$absoluteUrl ? Router::ABSOLUTE_URL : Router::ABSOLUTE_PATH |
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); |
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} |
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/** |
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* Creates string representation of class attribute from array. |
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* |
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* @param string $attributeName |
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* @param array $attributeData |
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* |
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* @return string |
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*/ |
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protected function prepareClassAttribute(array $attributeData) { |
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$preparedAttribute = "class =" |
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.$this->jsonEncode(implode(' ', $attributeData)); |
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return $preparedAttribute; |
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} |
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/** |
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* Calculate current pagination pages range. |
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* |
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* @return array |
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*/ |
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protected function getPageRange() |
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{ |
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$pageCount = $this->pagination->getPageCount(); |
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$beginPage = max( |
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0, |
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$this->pagination->getCurrentPage() - floor( |
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$this->maxButtonCount / 2 |
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) |
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); |
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$endPage = $beginPage + $this->maxButtonCount - 1; |
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if ($endPage >= $pageCount) { |
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$endPage = $pageCount - 1; |
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$beginPage = max(0, $endPage - $this->maxButtonCount + 1); |
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} |
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return [$beginPage, $endPage]; |
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} |
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/** |
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* @param Pagination $pagination |
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*/ |
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public function setPagination(Pagination $pagination) |
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{ |
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$this->pagination = $pagination; |
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} |
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/** |
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* Encodes data for using as html attribute value. |
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* |
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* @param mixed $data |
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* |
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* @return string |
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*/ |
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public function jsonEncode($data) |
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340
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{ |
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return json_encode( |
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$data, |
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343
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JSON_UNESCAPED_UNICODE |
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344
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| JSON_HEX_QUOT |
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345
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| JSON_HEX_TAG |
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346
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| JSON_HEX_AMP |
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347
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| JSON_HEX_APOS |
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348
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); |
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349
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} |
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} |
In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: