praiadeseselle/wire/modules/Markup/MarkupPagerNav/MarkupPagerNav.module
2022-03-08 15:55:41 +01:00

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<?php namespace ProcessWire;
require_once(dirname(__FILE__) . '/PagerNav.php');
/**
* MarkupPagerNav Module for generating pagination markup
*
* ProcessWire 3.x, Copyright 2016 by Ryan Cramer
* https://processwire.com
*
* #pw-summary Module for generating pagination markup automatically for paginated WireArray types.
* #pw-var $pager
* #pw-instantiate $pager = $modules->get('MarkupPagerNav');
* #pw-summary-options-methods Specific to setting certain options that are typically set automatically. Not necessary to use these unless for a specific purpose.
*
* #pw-body =
* This module can create pagination for a `PageArray` or any other kind of `PaginatedArray` type.
* Below is an example of creating pagination for a PageArray returned from `$pages->find()`.
* ~~~~~
* // $items can be PageArray or any other kind of PaginatedArray type
* $items = $pages->find("id>0, limit=10"); // replace id>0 with your selector
* if($items->count()) {
* $pager = $modules->get("MarkupPagerNav");
* echo "<ul>" . $items->each("<li>{title}</li>") . "</ul>";
* echo $pager->render($items); // render the pagination navigation
* } else {
* echo "<p>Sorry there were no items found</p>";
* }
* ~~~~~
* Heres a shortcut alternative that you can use for PageArray types (thanks to the `MarkupPageArray` module).
* Note that in this case, its not necessary to load the MarkupPagerNav module yourself:
* ~~~~~
* $items = $pages->find("id>0, limit=10"); // replace id>0 with your selector
* if($items->count()) {
* echo "<ul>" . $items->each("<li>{title}</li>") . "</ul>";
* echo $items->renderPager(); // render the pagination navigation
* } else {
* echo "<p>Sorry there were no items found</p>";
* }
* ~~~~~
* Its common to specify different markup and/or classes specific to the need when rendering
* pagination. This is done by providing an `$options` array to the `MarkupPagerNav::render()` call.
* In the example below, we'll specify Uikit markup rather then the default markup:
* ~~~~~
* // Change options for Uikit "uk-pagination" navigation
* $options = array(
* 'numPageLinks' => 5,
* 'listClass' => 'uk-pagination',
* 'linkMarkup' => "<a href='{url}'>{out}</a>",
* 'currentItemClass' => 'uk-active',
* 'separatorItemLabel' => '<span>&hellip;</span>',
* 'separatorItemClass' => 'uk-disabled',
* 'currentLinkMarkup' => "<span>{out}</span>"
* 'nextItemLabel' => '<i class="uk-icon-angle-double-right"></i>',
* 'previousItemLabel' => '<i class="uk-icon-angle-double-left"></i>',
* 'nextItemClass' => '', // blank out classes irrelevant to Uikit
* 'previousItemClass' => '',
* 'lastItemClass' => '',
* );
*
* $items = $pages->find("id>0, limit=10"); // replace id>0 with your selector
*
* if($items->count()) {
* $pager = $modules->get('MarkupPagerNav');
* echo "<ul>" . $items->each("<li>{title}</li>") . "</ul>";
* echo $pager->render($items, $options); // provide the $options array
* } else {
* echo "<p>Sorry there were no items found</p>";
* }
* ~~~~~
* The full list of options can be seen below. Please note that most options are set automatically since this module can
* determine most of the needed information directly from the WireArray that its given. As a result, its often
* not necessary to change any of the default options unless you want to change the markup and/or classes used in output.
* #pw-body
*
* @property int $numPageLinks The number of links that the pagination navigation should have, minimum 5 (default=10). #pw-group-general-options
* @property array $getVars GET vars that should appear in the pagination, or leave empty and populate $input->whitelist (recommended). #pw-group-general-options
* @property string $baseUrl The base URL from which the navigation item links will start (default=''). #pw-group-general-options
* @property null|Page $page The current Page, or leave NULL to autodetect. #pw-group-general-options
* @property string $listMarkup List container markup. Place {out} where you want the individual items rendered and {class} where you want the list class (default="<ul class='{class}' aria-label='{aria-label}'>{out}</ul>"). #pw-group-markup-options
* @property string $listClass The class name to use in the $listMarkup (default='MarkupPageNav'). #pw-group-class-options
* @property string $itemMarkup List item markup. Place {class} for item class (required), and {out} for item content. (default="<li class='{class}' aria-label='{aria-label}'>{out}</li>"). #pw-group-markup-options
* @property string $linkMarkup Link markup. Place {url} for href attribute, and {out} for label content. (default="<a href='{url}'><span>{out}</span></a>"). #pw-group-markup-options
* @property string $currentLinkMarkup Link markup for current page. Place {url} for href attribute and {out} for label content. (default="<a href='{url}'><span>{out}</span></a>"). #pw-group-markup-options
* @property string $nextItemLabel label used for the 'Next' button (default='Next'). #pw-group-label-options
* @property string $previousItemLabel label used for the 'Previous' button (default='Prev'). #pw-group-label-options
* @property string $separatorItemMarkup Markup to use for the "..." separator item, or NULL to use $itemMarkup (default=NULL). #pw-group-markup-options
* @property string $separatorItemLabel label used in the separator item (default='&hellip;'). #pw-group-label-options
* @property string $separatorItemClass Class for separator item (default='MarkupPagerNavSeparator'). #pw-group-class-options
* @property string $firstItemClass Class for first item (default='MarkupPagerNavFirst'). #pw-group-class-options
* @property string $firstNumberItemClass Class for first numbered item (default='MarkupPagerNavFirstNum'). #pw-group-class-options
* @property string $nextItemClass Class for next item (default='MarkupPagerNavNext'). #pw-group-class-options
* @property string $previousItemClass Class for previous item (default='MarkupPagerNavPrevious'). #pw-group-class-options
* @property string $lastItemClass Class for last item (default='MarkupPagerNavLast'). #pw-group-class-options
* @property string $lastNumberItemClass Class for last numbered item (default='MarkupPagerNavLastNum'). #pw-group-class-options
* @property string $currentItemClass Class for current item (default='MarkupPagerNavOn'). #pw-group-class-options
* @property string $listAriaLabel Label announcing pagination to screen readers (default='Pagination links'). #pw-group-label-options
* @property string $itemAriaLabel Label announcing page number to screen readers (default='Page {n}'). #pw-group-label-options
* @property string $currentItemAriaLabel Label announcing current page to screen readers (default='Page {n}, current page'). #pw-group-label-options
* @property-write bool $arrayToCSV When arrays are present in getVars, they will be translated to CSV strings in the queryString "?var=a,b,c". If set to false, then arrays will be kept in traditional format: "?var[]=a&var[]=b&var=c". (default=true) #pw-group-other-options
* @property int $totalItems Get total number of items to paginate (set automatically). #pw-group-other-options
* @property-read int $itemsPerPage Get number of items to display per page (set automatically, pulled from limit=n). #pw-group-other-options
* @property int $pageNum Get or set the current page number (1-based, set automatically). #pw-group-other-options
* @property string $queryString Get or set query string used in links (set automatically, based on $input->whitelist or getVars array). #pw-group-other-options
* @property-read bool $isLastPage Is the current pagination the last? Set automatically after a render() call. #pw-internal
*
* @method string render(WirePaginatable $items, $options = array())
*
*/
class MarkupPagerNav extends Wire implements Module {
public static function getModuleInfo() {
return array(
'title' => 'Pager (Pagination) Navigation',
'summary' => 'Generates markup for pagination navigation',
'version' => 105,
'permanent' => false,
'singular' => false,
'autoload' => false,
);
}
/**
* Options to modify the behavior and output of MarkupPagerNav
*
* Many of these are set automatically.
*
*/
protected $options = array(
// number of links that the pagination navigation should have, minimum 5 (typically 10)
'numPageLinks' => 10,
// get vars that should appear in the pagination, or leave empty and populate $input->whitelist (preferred)
'getVars' => array(),
// the baseUrl from which the navigiation item links will start
'baseUrl' => '',
// the current Page, or leave NULL to autodetect
'page' => null,
// List container markup. Place {out} where you want the individual items rendered.
'listMarkup' => "\n<ul class='{class}' role='navigation' aria-label='{aria-label}'>{out}\n</ul>",
// class attribute for <ul> pagination list
'listClass' => 'MarkupPagerNav',
// List item markup. Place {class} for item class (required), and {out} for item content.
'itemMarkup' => "\n\t<li aria-label='{aria-label}' class='{class}' {attr}>{out}</li>",
// Item separator "...", null makes it use the 'itemMarkup' instead (default)
'separatorItemMarkup' => null,
// Link markup. Place {url} for href attribute, and {out} for label content.
'linkMarkup' => "<a href='{url}'><span>{out}</span></a>",
// Link markup for current page. Place {url} for href attribute and {out} for label content.
'currentLinkMarkup' => "<a href='{url}'><span>{out}</span></a>",
// label used for the 'Next' button
'nextItemLabel' => 'Next',
// label used for the 'Previous' button
'previousItemLabel' => 'Prev',
// label used in the separator item
'separatorItemLabel' => '&hellip;',
// default classes used for list items, according to the type.
'separatorItemClass' => 'MarkupPagerNavSeparator',
'firstItemClass' => 'MarkupPagerNavFirst',
'firstNumberItemClass' => 'MarkupPagerNavFirstNum',
'nextItemClass' => 'MarkupPagerNavNext',
'previousItemClass' => 'MarkupPagerNavPrevious',
'lastItemClass' => 'MarkupPagerNavLast',
'lastNumberItemClass' => 'MarkupPagerNavLastNum',
'currentItemClass' => 'MarkupPagerNavOn',
// any extra attributes for current item
'currentItemExtraAttr' => "aria-current='true'",
// aria labels
'listAriaLabel' => 'Pagination links',
'itemAriaLabel' => 'Page {n}',
'currentItemAriaLabel' => 'Page {n}, current page',
'nextItemAriaLabel' => 'Next page',
'previousItemAriaLabel' => 'Previous page',
'lastItemAriaLabel' => 'Page {n}, last page',
/*
* NOTE: The following options are set automatically and should not be provided in your $options,
* because anything you specify will get overwritten.
*
*/
// total number of items to paginate (set automatically)
'totalItems' => 0,
// number of items to display per page (set automatically)
'itemsPerPage' => 10,
// the current page number (1-based, set automatically)
'pageNum' => 1,
// when arrays are present in getVars, they will be translated to CSV strings in the queryString: ?var=a,b,c
// if set to false, then arrays will be kept in traditional format: ?var[]=a&var[]=b&var=c
'arrayToCSV' => true,
// the queryString used in links (set automatically, based on whitelist or getVars array)
'queryString' => '',
);
/**
* True when the current page is also the last page
*
* @var bool|null
*
*/
protected $isLastPage = null;
/**
* Prefix to identify page numbers in URL, i.e. page123 or page=123
*
* @var string
*
*/
protected $pageNumUrlPrefix = 'page';
/**
* Construct
*
*/
public function __construct() {
$this->options['nextItemLabel'] = $this->_('Next');
$this->options['previousItemLabel'] = $this->_('Prev');
$this->options['listAriaLabel'] = $this->_('Pagination links');
$this->options['itemAriaLabel'] = $this->_('Page {n}'); // Page number label // Note that {n} is replaced with pagination number
$this->options['currentItemAriaLabel'] = $this->_('Page {n}, current page');
$this->options['nextItemAriaLabel'] = $this->_('Next page');
$this->options['previousItemAriaLabel'] = $this->_('Previous page');
$this->options['lastItemAriaLabel'] = $this->_('Page {n}, last page');
// check for all-instance options
$options = $this->wire('config')->MarkupPagerNav;
if(is_array($options)) $this->options = array_merge($this->options, $options);
}
/**
* Render pagination markup
*
* ~~~~~
* $items = $pages->find("id>0, limit=10"); // replace id>0 with your selector
* if($items->count()) {
* echo "<ul>" . $items->each("<li>{title}</li>") . "</ul>";
* $pager = $modules->get("MarkupPagerNav");
* $options = [ 'numPageLinks' => 5 ];
* echo $pager->render($items, $options); // render the pagination navigation
* } else {
* echo "<p>Sorry there were no items found</p>";
* }
* ~~~~~
*
* @param WirePaginatable|PageArray|PaginatedArray $items Items used in the pagination that have had a "limit=n" selector applied when they were loaded.
* @param array $options Any options to override the defaults. See the `MarkupPagerNav` reference for all options.
* @return string
* @see MarkupPageArray::renderPager()
*
*/
public function ___render(WirePaginatable $items, $options = array()) {
$config = $this->wire('config');
$this->isLastPage = true;
$this->totalItems = $items->getTotal();
if(!$this->totalItems) return '';
$this->options = array_merge($this->options, $options);
$limit = $items->getLimit();
if($limit) $this->itemsPerPage = $limit;
$this->pageNum = $items->getStart() < $this->itemsPerPage ? 1 : ceil($items->getStart() / $this->itemsPerPage)+1;
if(is_null($this->options['page'])) {
$this->options['page'] = $this->wire('page');
}
if(!strlen($this->queryString)) {
$whitelist = $this->wire('input')->whitelist->getArray();
if(!count($this->options['getVars']) && count($whitelist)) {
$this->setGetVars($whitelist);
} else if(count($this->options['getVars'])) {
$this->setGetVars($this->getVars);
}
}
if($config->pageNumUrlPrefix) {
$this->pageNumUrlPrefix = $config->pageNumUrlPrefix;
}
$pagerNav = new PagerNav($this->totalItems, $this->itemsPerPage, $this->pageNum);
$pagerNav->setLabels($this->options['previousItemLabel'], $this->options['nextItemLabel']);
$pagerNav->setNumPageLinks($this->numPageLinks);
$pager = $pagerNav->getPager();
$out = '';
$pagerCount = count($pager);
if($pagerCount > 1) $this->isLastPage = false;
$firstNumberKey = null;
$lastNumberKey = null;
// determine first and last numbered items
foreach($pager as $key => $item) {
if(!ctype_digit("$item->label")) continue;
if(is_null($firstNumberKey)) $firstNumberKey = $key;
$lastNumberKey = $key;
}
$_url = ''; // URL from previous loop interation
$nextURL = '';
$prevURL = '';
$lastWasCurrent = false; // was the last iteration for the current page item?
foreach($pager as $key => $item) {
if($item->type == 'separator') {
$out .= $this->renderItemSeparator();
continue;
}
$url = $this->getURL($item->pageNum);
$classes = array();
if($item->type != 'first' && $item->type != 'last' && isset($this->options[$item->type . 'ItemClass'])) {
$classes[] = $this->options[$item->type . 'ItemClass'];
}
if(!$key) {
$classes[] = $this->options['firstItemClass'];
} else if($key == ($pagerCount-1)) {
$classes[] = $this->options['lastItemClass'];
}
if($key === $firstNumberKey) {
$classes[] = $this->options['firstNumberItemClass'];
} else if($key === $lastNumberKey) {
$classes[] = $this->options['lastNumberItemClass'];
if($item->type == 'current') $this->isLastPage = true;
}
$itemExtraAttr = '';
if($item->type == 'current') {
$itemAriaLabel = $this->options['currentItemAriaLabel'];
$itemExtraAttr = ' ' . $this->options['currentItemExtraAttr'];
} else if($item->type == 'previous') {
$itemAriaLabel = $this->options['previousItemAriaLabel'];
} else if($item->type == 'next') {
$itemAriaLabel = $this->options['nextItemAriaLabel'];
} else if($item->type == 'last') {
$itemAriaLabel = $this->options['lastItemAriaLabel'];
} else {
$itemAriaLabel = $this->options['itemAriaLabel'];
}
$itemAriaLabel = str_replace('{n}', $item->pageNum, $itemAriaLabel);
if(isset($this->options[$item->type . 'LinkMarkup'])) {
$linkMarkup = $this->options[$item->type . 'LinkMarkup'];
} else {
$linkMarkup = $this->options['linkMarkup'];
}
$link = str_replace(array('{url}', '{out}'), array($url, $item->label), $linkMarkup);
$out .= str_replace(
array(
'{class}',
'{out}',
'{aria-label}',
' {attr}',
'{attr}'
),
array(
implode(' ', $classes),
$link,
$itemAriaLabel,
$itemExtraAttr,
$itemExtraAttr
),
$this->options['itemMarkup']
);
if($item->type == 'current') {
$prevURL = $_url;
$lastWasCurrent = true;
} else {
if($lastWasCurrent) $nextURL = $url;
$lastWasCurrent = false;
}
$_url = $url; // remember previous url
}
if($out) {
$out = str_replace(array(
'{class}',
'{aria-label}',
'{out}',
" class=''",
' class=""'
), array(
$this->options['listClass'],
$this->options['listAriaLabel'],
$out,
'',
''
), $this->options['listMarkup']);
if($nextURL || $prevURL) $this->updateConfigVars($nextURL, $prevURL);
}
return $out;
}
/**
* Render the "..." item separator
*
* @return string
*
*/
protected function renderItemSeparator() {
if($this->options['separatorItemMarkup'] !== null) {
$markup = $this->options['separatorItemMarkup'];
} else {
$markup = $this->options['itemMarkup'];
}
return str_replace(
array(
'{class}',
'{out}',
'{aria-label}',
' {attr}', // optionally with leading space
'{attr}'
),
array(
$this->options['separatorItemClass'],
$this->options['separatorItemLabel'],
'',
'',
''
),
$markup
);
}
/**
* Retrieve a MarkupPagerNav option as an object property
*
* @param string $property
* @return mixed
*
*/
public function __get($property) {
if(isset($this->options[$property])) return $this->options[$property];
if($property == 'isLastPage') return $this->isLastPage;
return null;
}
/**
* Set a MarkupPagerNav option as an object property
*
* @param string $property
* @param mixed $value
*
*/
public function __set($property, $value) {
if(isset($this->options[$property])) $this->options[$property] = $value;
}
/**
* Returns true when the current pagination is the last one
*
* Only set after a render() call. Prior to that it is null.
*
* #pw-internal
*
* @return bool|null
*
*/
public function isLastPage() {
return $this->isLastPage;
}
/**
* Get all options or set options
*
* - See the main `MarkupPagerNav` documentation for a list of all available options.
* - When used to set options this method should be called before the `MarkupPagerNav::render()` method.
* - Options can also be set as a 2nd argument to the `MarkupPagerNav::render()` method.
*
* ~~~~~
* // Getting options
* echo "<pre>" . print_r($pager->options(), true) . "</pre>";
*
* // Setting options
* $pager->options([ 'numPageLinks' => 5 ]);
* echo $pager->render($items);
*
* // Alternative that does the same as above
* echo $pager->render($items, [ 'numPageLinks' => 5 ]);
* ~~~~~
*
* @param array $options Associative array of options you want to set, or omit to just return all available/current options.
* @return array Returns associative array if options with all current values.
* @since 3.0.44
*
*/
public function options(array $options = array()) {
if(!empty($options)) {
$this->options = array_merge($this->options, $options);
}
return $this->options;
}
/*************************************************************************************************
* All the methods below are optional and typically set automatically, or via the $options param.
*
*/
/**
* Set the getVars for this MarkupPagerNav
*
* Generates $this->options['queryString'] automatically.
*
* #pw-group-method-options
*
* @param array $vars Array of GET vars indexed as ($key => $value)
*
*/
public function setGetVars(array $vars) {
$this->options['getVars'] = $vars;
$queryString = "?";
foreach($this->options['getVars'] as $key => $value) {
if(is_array($value)) {
if($this->options['arrayToCSV']) {
$a = $value;
$value = '';
foreach($a as $k => $v) $value .= "$v,";
$value = rtrim($value, ", ");
$queryString .= "$key=" . urlencode($value) . "&";
} else {
foreach($value as $k => $v) $queryString .= "$key%5B%5D=" . urlencode($v) . "&";
}
} else {
$queryString .= "$key=" . urlencode($value) . "&";
}
}
$this->queryString = htmlspecialchars(rtrim($queryString, "?&"));
}
/**
* Set the current page number
*
* #pw-group-method-options
*
* @param int $n
*
*/
public function setPageNum($n) { $this->pageNum = $n; }
/**
* Set the number of items shown per page
*
* #pw-group-method-options
*
* @param int $n
*
*/
public function setItemsPerPage($n) { $this->itemsPerPage = $n; }
/**
* Set the total number of items
*
* #pw-group-method-options
*
* @param int $n
*
*/
public function setTotalItems($n) { $this->totalItems = $n; }
/**
* Set the number of pagination links to use
*
* #pw-group-method-options
*
* @param int $n
*
*/
public function setNumPageLinks($n) { $this->numPageLinks = $n; }
/**
* Set the query string
*
* #pw-group-method-options
*
* @param string $s Already-sanitized/validated query string
*
*/
public function setQueryString($s) { $this->queryString = $s; }
/**
* Set the base URL for pagination
*
* #pw-group-method-options
*
* @param string $url
*
*/
public function setBaseUrl($url) { $this->baseUrl = $url; }
/**
* Set the "next" and "prev" labels
*
* #pw-group-method-options
*
* @param string $next
* @param string $prev
*
*/
public function setLabels($next, $prev) {
$this->options['nextItemLabel'] = $next;
$this->options['previousItemLabel'] = $prev;
}
/**
* Get URL for given pagination number
*
* Requires that render() method has already started or been previously called.
*
* @param int $pageNum
* @param bool $http Include scheme and hostname?
* @return string
*
*/
public function getURL($pageNum, $http = false) {
/** @var Page $page */
$page = $this->options['page'];
$template = $page->template;
if($this->baseUrl) {
$url = $this->baseUrl;
} else if($http) {
$url = $page->httpUrl();
} else {
$url = $page->url();
}
if($pageNum > 1) {
if($template->allowPageNum) {
// if allowPageNum is true, then we can use urlSegment style page numbers rather than GET var page numbers
if($template->slashUrls === 0) $url .= '/'; // enforce a trailing slash, regardless of slashUrls template setting
$url .= $this->pageNumUrlPrefix . $pageNum;
if($template->slashPageNum > 0) $url .= '/';
$url .= $this->queryString;
} else {
// query string style pagination
$url .= $this->queryString . (strlen($this->queryString) ? "&" : "?") . "$this->pageNumUrlPrefix=$pageNum";
}
} else {
$url .= $this->queryString;
}
return $url;
}
/**
* Populate $config->urls->next, $config->urls->prev, and $config->pagerHeadTags
*
* @param string $nextURL
* @param string $prevURL
*
*/
protected function updateConfigVars($nextURL, $prevURL) {
/** @var Config $config */
$config = $this->wire('config');
$httpRoot = $this->wire('input')->httpHostUrl();
$pagerHeadTags = '';
if($nextURL) {
$config->urls->next = $nextURL;
$pagerHeadTags .= "<link rel=\"next\" href=\"$httpRoot$nextURL\" />";
}
if($prevURL) {
$config->urls->prev = $prevURL;
$pagerHeadTags .= "<link rel=\"prev\" href=\"$httpRoot$prevURL\" />";
}
$config->set('pagerHeadTags', $pagerHeadTags);
}
/*
* The following methods are specific to the Module interface
*
*/
public function init() { }
public function ___install() { }
public function ___uninstall() { }
}