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<?php /** * Kunena Component * * @package Kunena.Framework * @subpackage Pagination * * @copyright Copyright (C) 2005 - 2013 Open Source Matters, Inc. All rights reserved. * @copyright Copyright (C) 2008 - @currentyear@ Kunena Team. All rights reserved. * @license https://www.gnu.org/copyleft/gpl.html GNU/GPL * @link https://www.kunena.org **/ namespace Kunena\Forum\Libraries\Pagination; \defined('_JEXEC') or die(); use Exception; use Joomla\CMS\Factory; use Joomla\CMS\HTML\HTMLHelper; use Joomla\CMS\Language\Text; use Joomla\CMS\Layout\LayoutHelper; use Joomla\CMS\Pagination\PaginationObject; use Joomla\CMS\Router\Route; use Joomla\CMS\Uri\Uri; use Kunena\Forum\Libraries\Factory\KunenaFactory; use Kunena\Forum\Libraries\Route\KunenaRoute; use stdClass; /** * Pagination Class. Provides a common interface for content pagination for the Joomla! CMS. * * @package Joomla.Libraries * @subpackage Pagination * @since 1.5 */ class KunenaPagination { /** * @var integer The record number to start displaying from. * @since 1.5 */ public $limitstart = null; /** * @var integer Number of rows to display per page. * @since 1.5 */ public $limit = null; /** * @var integer Total number of rows. * @since 1.5 */ public $total = null; /** * @var integer Prefix used for request variables. * @since 1.6 */ public $prefix = null; /** * @var integer Value pagination object begins at * @since 3.0 */ public $pagesStart; /** * @var integer Value pagination object ends at * @since 3.0 */ public $pagesStop; /** * @var integer Current page * @since 3.0 */ public $pagesCurrent; /** * @var integer Total number of pages * @since 3.0 */ public $pagesTotal; /** * @var integer * @since Kunena 6.0 */ public $stickyStart = null; /** * @var integer * @since Kunena 6.0 */ public $stickyStop = null; /** * @var Uri * @since Kunena 6.0 */ public $uri = null; /** * @var boolean View all flag * @since 3.0 */ protected $viewall = false; /** * @var null * @since Kunena 6.0 */ protected $itemActiveChrome = null; /** * @var null * @since Kunena 6.0 */ protected $itemInactiveChrome = null; /** * @var null * @since Kunena 6.0 */ protected $listChrome = null; /** * @var null * @since Kunena 6.0 */ protected $footerChrome = null; /** * Additional URL parameters to be added to the pagination URLs generated by the class. These * may be useful for filters and extra values when dealing with lists and GET requests. * * @var array * @since 3.0 */ protected $additionalUrlParams = []; /** * Constructor. * * @param integer $total The total number of items. * @param integer $limitstart The offset of the item to start at. * @param integer $limit The number of items to display per page. * @param string $prefix The prefix used for request variables. * * @since 1.5 */ public function __construct(int $total, $limitstart, int $limit, $prefix = '') { // Value/type checking. $this->total = (int) $total; $this->limitstart = (int) max($limitstart, 0); $this->limit = (int) max($limit, 0); $this->prefix = $prefix; if ($this->limit > $this->total) { $this->limitstart = 0; } if (!$this->limit) { $this->limit = $total; $this->limitstart = 0; } /* * If limitstart is greater than total (i.e. we are asked to display records that don't exist) * then set limitstart to display the last natural page of results */ if ($this->limitstart > $this->total - $this->limit) { $this->limitstart = max(0, (int) (ceil($this->total / $this->limit) - 1) * $this->limit); } // Set the total pages and current page values. if ($this->limit > 0) { $this->pagesTotal = ceil($this->total / $this->limit); $this->pagesCurrent = ceil(($this->limitstart + 1) / $this->limit); } $this->setDisplayedPages(); // If we are viewing all records set the view all flag to true. if ($limit == 0) { $this->viewall = true; } } /** * Set number of displayed pages. * * @param int $displayed Number of displayed pages. * @param int $start How many items to display from the beginning (1 2 ...) * @param int $end How many items to display from the end (... 49 50) * * @return KunenaPagination Method supports chaining. * * @since Kunena 6.0 */ public function setDisplayedPages($displayed = 10, $start = 0, $end = 0): KunenaPagination { $this->stickyStart = $start; $this->stickyStop = $end; // Set the pagination iteration loop values. $this->pagesStart = $this->pagesCurrent - (int) ($displayed / 2); if ($this->pagesStart < 1 + $start) { $this->pagesStart = 1 + $start; } if ($this->pagesStart + $displayed - $start > $this->pagesTotal) { $this->pagesStop = $this->pagesTotal; if ($this->pagesTotal < $displayed) { $this->pagesStart = 1 + $start; } else { $this->pagesStart = $this->pagesTotal - $displayed + 1 + $start; } } else { $this->pagesStop = $this->pagesStart + $displayed - 1 - $end; } $this->pagesStop = max(1, $this->pagesStop); $this->pagesTotal = max(1, $this->pagesTotal); return $this; } /** * Set URI for pagination. * * @param Uri $uri Joomla\CMS\Uri\Uri object. * * @return KunenaPagination Method supports chaining. * * @since Kunena 6.0 */ public function setUri(Uri $uri): KunenaPagination { $this->uri = clone $uri; return $this; } /** * Method to set an additional URL parameter to be added to all pagination class generated * links. * * @param string $key The name of the URL parameter for which to set a value. * @param mixed $value The value to set for the URL parameter. * * @return mixed The old value for the parameter. * * @since 1.6 */ public function setAdditionalUrlParam(string $key, $value) { // Get the old value to return and set the new one for the URL parameter. $result = isset($this->additionalUrlParams[$key]) ? $this->additionalUrlParams[$key] : null; // If the passed parameter value is null unset the parameter, otherwise set it to the given value. if ($value === null) { unset($this->additionalUrlParams[$key]); } else { $this->additionalUrlParams[$key] = $value; } return $result; } /** * Method to get an additional URL parameter (if it exists) to be added to * all pagination class generated links. * * @param string $key The name of the URL parameter for which to get the value. * * @return mixed The value if it exists or null if it does not. * * @since 1.6 */ public function getAdditionalUrlParam(string $key) { return isset($this->additionalUrlParams[$key]) ? $this->additionalUrlParams[$key] : null; } /** * Return the rationalised offset for a row with a given index. * * @param integer $index The row index * * @return int|null Rationalised offset for a row with a given index. * * @since 1.5 */ public function getRowOffset(int $index): ?int { return $index + 1 + $this->limitstart; } /** * Return the pagination data object, only creating it if it doesn't already exist. * * @return object Pagination data object. * * @since 1.5 */ public function getData() { // Do not have static cache here (if needed, keep it in object context). return $this->_buildDataObject(); } /** * Create and return the pagination data object. * * @return object Pagination data object. * * @since 1.5 */ protected function _buildDataObject() { $data = new stdClass(); if (!$this->uri) { $this->uri = KunenaRoute::$current; } // Build the additional URL parameters string. foreach ($this->additionalUrlParams as $key => $value) { $this->uri->setVar($key, $value); } $limitstartKey = $this->prefix . 'limitstart'; $data->all = new PaginationObject(Text::_('JLIB_HTML_VIEW_ALL'), $this->prefix); if (!$this->viewall) { $this->uri->delVar($limitstartKey); $data->all->base = '0'; $data->all->link = Route::_((string) $this->uri); } // Set the start and previous data objects. $data->start = new PaginationObject(Text::_('JLIB_HTML_START'), $this->prefix); $data->previous = new PaginationObject(Text::_('JPREV'), $this->prefix); if ($this->pagesCurrent > 1) { $page = ($this->pagesCurrent - 2) * $this->limit; $this->uri->setVar($limitstartKey, '0'); $data->start->base = '0'; $data->start->link = Route::_((string) $this->uri); $this->uri->setVar($limitstartKey, $page); $data->previous->base = $page; $data->previous->link = Route::_((string) $this->uri); } // Set the next and end data objects. $data->next = new PaginationObject(Text::_('JNEXT'), $this->prefix); $data->end = new PaginationObject(Text::_('JLIB_HTML_END'), $this->prefix); if ($this->pagesCurrent < $this->pagesTotal) { $next = $this->pagesCurrent * $this->limit; $end = ($this->pagesTotal - 1) * $this->limit; $this->uri->setVar($limitstartKey, $next); $data->next->base = $next; $data->next->link = Route::_((string) $this->uri); $this->uri->setVar($limitstartKey, $end); $data->end->base = $end; $data->end->link = Route::_((string) $this->uri); } $data->pages = []; $range = range($this->pagesStart, $this->pagesStop); $range[] = 1; $range[] = $this->pagesTotal; sort($range); foreach ($range as $i) { $offset = ($i - 1) * $this->limit; $data->pages[$i] = new PaginationObject($i, $this->prefix); if ($i != $this->pagesCurrent || $this->viewall) { $this->uri->setVar($limitstartKey, $offset); $data->pages[$i]->base = $offset; $data->pages[$i]->link = Route::_((string) $this->uri); } elseif ($i == $this->pagesCurrent) { $data->pages[$i]->active = true; } } return $data; } /** * Create and return the pagination result set counter string, e.g. Results 1-10 of 42 * * @return string Pagination result set counter string. * * @since 1.5 */ public function getResultsCounter(): string { $html = null; $fromResult = $this->limitstart + 1; // If the limit is reached before the end of the list. if ($this->limitstart + $this->limit < $this->total) { $toResult = $this->limitstart + $this->limit; } else { $toResult = $this->total; } // If there are results found. if ($this->total > 0) { $msg = Text::sprintf('JLIB_HTML_RESULTS_OF', $fromResult, $toResult, $this->total); $html .= "\n" . $msg; } else { $html .= "\n" . Text::_('JLIB_HTML_NO_RECORDS_FOUND'); } return $html; } /** * Return the pagination footer. * * @return string Pagination footer. * * @since 1.5 * * @throws Exception */ public function getListFooter(): string { $list = []; $list['prefix'] = $this->prefix; $list['limit'] = $this->limit; $list['limitstart'] = $this->limitstart; $list['total'] = $this->total; $list['limitfield'] = $this->getLimitBox(); $list['pagescounter'] = $this->getPagesCounter(); $list['pageslinks'] = $this->getPagesLinks(); $this->setChrome(); return \call_user_func($this->footerChrome, $list); } /** * Creates a dropdown box for selecting how many records to show per page. * * @param bool $all True if you want to display option for all. * * @return string The HTML for the limit # input box. * * @since 1.5 * * @throws Exception */ public function getLimitBox($all = false): string { $app = Factory::getApplication(); $limits = []; // Make the option list. for ($i = 5; $i <= 30; $i += 5) { $limits[] = HTMLHelper::_('select.option', "$i"); } $limits[] = HTMLHelper::_('select.option', '50', Text::_('J50')); $limits[] = HTMLHelper::_('select.option', '100', Text::_('J100')); if ($all) { $limits[] = HTMLHelper::_('select.option', '0', Text::_('JALL')); } $selected = $this->viewall ? 0 : $this->limit; // Build the select list. if ($app->isClient('administrator')) { $html = HTMLHelper::_( 'select.genericlist', $limits, $this->prefix . 'limit', 'class="inputbox input-mini form-control" size="1" onchange="Joomla.submitform();"', 'value', 'text', $selected ); } else { $html = HTMLHelper::_( 'select.genericlist', $limits, $this->prefix . 'limit', 'class="inputbox input-mini form-control" size="1" onchange="this.form.submit()"', 'value', 'text', $selected ); } return $html; } /** * Create and return the pagination pages counter string, ie. Page 2 of 4. * * @return string|null Pagination pages counter string. * * @since 1.5 */ public function getPagesCounter(): ?string { $html = null; if ($this->pagesTotal > 1) { $html .= Text::sprintf('JLIB_HTML_PAGE_CURRENT_OF_TOTAL', $this->pagesCurrent, $this->pagesTotal); } return $html; } /** * Create and return the pagination page list string, ie. Previous, Next, 1 2 3 ... x. * * @return string Pagination page list string. * * @since 1.5 * * @throws Exception */ public function getPagesLinks(): string { if ($this->total <= $this->limit) { return ''; } // Build the page navigation list. $data = $this->_buildDataObject(); $list = []; $list['prefix'] = $this->prefix; $this->setChrome(); // Build the select list if ($data->all->base !== null) { $list['all']['active'] = true; $list['all']['data'] = \call_user_func($this->itemActiveChrome, $data->all); } else { $list['all']['active'] = false; $list['all']['data'] = \call_user_func($this->itemInactiveChrome, $data->all); } if ($data->start->base !== null) { $list['start']['active'] = true; $list['start']['data'] = \call_user_func($this->itemActiveChrome, $data->start); } else { $list['start']['active'] = false; $list['start']['data'] = \call_user_func($this->itemInactiveChrome, $data->start); } if ($data->previous->base !== null) { $list['previous']['active'] = true; $list['previous']['data'] = \call_user_func($this->itemActiveChrome, $data->previous); } else { $list['previous']['active'] = false; $list['previous']['data'] = \call_user_func($this->itemInactiveChrome, $data->previous); } // Make sure it exists $list['pages'] = []; foreach ($data->pages as $i => $page) { if ($page->base !== null) { $list['pages'][$i]['active'] = true; $list['pages'][$i]['data'] = \call_user_func($this->itemActiveChrome, $page); } else { $list['pages'][$i]['active'] = false; $list['pages'][$i]['data'] = \call_user_func($this->itemInactiveChrome, $page); } } if ($data->next->base !== null) { $list['next']['active'] = true; $list['next']['data'] = \call_user_func($this->itemActiveChrome, $data->next); } else { $list['next']['active'] = false; $list['next']['data'] = \call_user_func($this->itemInactiveChrome, $data->next); } if ($data->end->base !== null) { $list['end']['active'] = true; $list['end']['data'] = \call_user_func($this->itemActiveChrome, $data->end); } else { $list['end']['active'] = false; $list['end']['data'] = \call_user_func($this->itemInactiveChrome, $data->end); } return \call_user_func($this->listChrome, $list); } /** * @return void * * @since Kunena 6.0 * * @throws Exception */ protected function setChrome(): void { $template = KunenaFactory::getTemplate(); $this->itemActiveChrome = [$template, 'getPaginationItemActive']; $this->itemInactiveChrome = [$template, 'getPaginationItemInactive']; $this->listChrome = [$template, 'getPaginationListRender']; $this->footerChrome = [$template, 'getPaginationListFooter']; } /** * Return the icon to move an item UP. * * @param integer $i The row index. * @param boolean $condition True to show the icon. * @param string $task The task to fire. * @param string $alt The image alternative text string. * @param boolean $enabled An optional setting for access control on the action. * @param string $checkbox An optional prefix for checkboxes. * * @return string Either the icon to move an item up or a space. * * @since 1.5 */ public function orderUpIcon(int $i, $condition = true, $task = 'orderup', $alt = 'JLIB_HTML_MOVE_UP', $enabled = true, $checkbox = 'cb'): string { if (($i > 0 || ($i + $this->limitstart > 0)) && $condition) { return HTMLHelper::_('jgrid.orderUp', $i, $task, '', $alt, $enabled, $checkbox); } return ' '; } /** * Return the icon to move an item DOWN. * * @param integer $i The row index. * @param integer $n The number of items in the list. * @param boolean $condition True to show the icon. * @param string $task The task to fire. * @param string $alt The image alternative text string. * @param boolean $enabled An optional setting for access control on the action. * @param string $checkbox An optional prefix for checkboxes. * * @return string Either the icon to move an item down or a space. * * @since 1.5 */ public function orderDownIcon(int $i, int $n, $condition = true, $task = 'orderdown', $alt = 'JLIB_HTML_MOVE_DOWN', $enabled = true, $checkbox = 'cb'): string { if (($i < $n - 1 || $i + $this->limitstart < $this->total - 1) && $condition) { return HTMLHelper::_('jgrid.orderDown', $i, $task, '', $alt, $enabled, $checkbox); } return ' '; } /** * Create the HTML for a list footer * * @param array $list Pagination list data structure. * * @return string HTML for a list footer * * @since 1.5 */ protected function _list_footer(array $list): string { $html = "<div class=\"list-footer\">\n"; $html .= "\n<div class=\"limit\">" . Text::_('JGLOBAL_DISPLAY_NUM') . $list['limitfield'] . "</div>"; $html .= $list['pageslinks']; $html .= "\n<div class=\"counter\">" . $list['pagescounter'] . "</div>"; $html .= "\n<input type=\"hidden\" name=\"" . $list['prefix'] . "limitstart\" value=\"" . $list['limitstart'] . "\" />"; $html .= "\n</div>"; return $html; } /** * Create the html for a list footer * * @param array $list Pagination list data structure. * * @return string HTML for a list start, previous, next,end * * @since 1.5 */ protected function _list_render(array $list): string { // Reverse output rendering for right-to-left display. $html = '<ul>'; $html .= '<li class="pagination-start">' . $list['start']['data'] . '</li>'; $html .= '<li class="pagination-prev">' . $list['previous']['data'] . '</li>'; foreach ($list['pages'] as $page) { $html .= '<li>' . $page['data'] . '</li>'; } $html .= '<li class="pagination-next">' . $list['next']['data'] . '</li>'; $html .= '<li class="pagination-end">' . $list['end']['data'] . '</li>'; $html .= '</ul>'; return $html; } /** * Method to create an active pagination link to the item * * @param PaginationObject $item The object with which to make an active link. * * @return string HTML link * * @since 1.5 */ protected function _item_active(PaginationObject $item) { return LayoutHelper::render('joomla.pagination.link', ['data' => $item, 'active' => true]); } /** * Method to create an inactive pagination string * * @param PaginationObject $item The item to be processed * * @return string * * @since 1.5 */ protected function _item_inactive(PaginationObject $item) { return LayoutHelper::render('joomla.pagination.link', ['data' => $item, 'active' => false]); } }
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