621 lines
18 KiB
PHP
621 lines
18 KiB
PHP
<?php
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/**
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* Special handling for category description pages.
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* Modelled after ImagePage.php.
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*
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* @file
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*/
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if ( !defined( 'MEDIAWIKI' ) )
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die( 1 );
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/**
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* Special handling for category description pages, showing pages,
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* subcategories and file that belong to the category
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*/
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class CategoryPage extends Article {
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# Subclasses can change this to override the viewer class.
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protected $mCategoryViewerClass = 'CategoryViewer';
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function view() {
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global $wgRequest, $wgUser;
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$diff = $wgRequest->getVal( 'diff' );
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$diffOnly = $wgRequest->getBool( 'diffonly', $wgUser->getOption( 'diffonly' ) );
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if ( isset( $diff ) && $diffOnly )
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return parent::view();
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if ( !wfRunHooks( 'CategoryPageView', array( &$this ) ) )
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return;
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if ( NS_CATEGORY == $this->mTitle->getNamespace() ) {
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$this->openShowCategory();
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}
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parent::view();
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if ( NS_CATEGORY == $this->mTitle->getNamespace() ) {
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$this->closeShowCategory();
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}
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}
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/**
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* Don't return a 404 for categories in use.
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*/
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function hasViewableContent() {
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if ( parent::hasViewableContent() ) {
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return true;
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} else {
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$cat = Category::newFromTitle( $this->mTitle );
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return $cat->getId() != 0;
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}
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}
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function openShowCategory() {
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# For overloading
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}
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function closeShowCategory() {
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global $wgOut;
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$from = $until = array();
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foreach ( array( 'page', 'subcat', 'file' ) as $type ) {
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# Use $_GET instead of $wgRequest, because the latter helpfully
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# normalizes Unicode, which removes nulls. TODO: do something
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# smarter than passing nulls in URLs. :/
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$from[$type] = isset( $_GET["{$type}from"] ) ? $_GET["{$type}from"] : null;
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$until[$type] = isset( $_GET["{$type}until"] ) ? $_GET["{$type}until"] : null;
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}
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$viewer = new $this->mCategoryViewerClass( $this->mTitle, $from, $until, $_GET );
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$wgOut->addHTML( $viewer->getHTML() );
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}
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}
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class CategoryViewer {
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var $title, $limit, $from, $until,
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$articles, $articles_start_char,
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$children, $children_start_char,
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$showGallery, $gallery,
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$skin;
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# Category object for this page
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private $cat;
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# The original query array, to be used in generating paging links.
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private $query;
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function __construct( $title, $from = '', $until = '', $query = array() ) {
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global $wgCategoryPagingLimit;
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$this->title = $title;
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$this->from = $from;
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$this->until = $until;
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$this->limit = $wgCategoryPagingLimit;
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$this->cat = Category::newFromTitle( $title );
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$this->query = $query;
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unset( $this->query['title'] );
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}
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/**
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* Format the category data list.
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*
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* @return string HTML output
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* @private
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*/
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function getHTML() {
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global $wgOut, $wgCategoryMagicGallery, $wgContLang;
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wfProfileIn( __METHOD__ );
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$this->showGallery = $wgCategoryMagicGallery && !$wgOut->mNoGallery;
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$this->clearCategoryState();
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$this->doCategoryQuery();
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$this->finaliseCategoryState();
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$r = $this->getSubcategorySection() .
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$this->getPagesSection() .
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$this->getImageSection();
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if ( $r == '' ) {
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// If there is no category content to display, only
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// show the top part of the navigation links.
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// FIXME: cannot be completely suppressed because it
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// is unknown if 'until' or 'from' makes this
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// give 0 results.
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$r = $r . $this->getCategoryTop();
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} else {
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$r = $this->getCategoryTop() .
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$r .
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$this->getCategoryBottom();
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}
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// Give a proper message if category is empty
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if ( $r == '' ) {
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$r = wfMsgExt( 'category-empty', array( 'parse' ) );
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}
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wfProfileOut( __METHOD__ );
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return $wgContLang->convert( $r );
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}
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function clearCategoryState() {
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$this->articles = array();
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$this->articles_start_char = array();
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$this->children = array();
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$this->children_start_char = array();
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if ( $this->showGallery ) {
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$this->gallery = new ImageGallery();
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$this->gallery->setHideBadImages();
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}
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}
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function getSkin() {
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if ( !$this->skin ) {
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global $wgUser;
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$this->skin = $wgUser->getSkin();
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}
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return $this->skin;
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}
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/**
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* Add a subcategory to the internal lists, using a Category object
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*/
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function addSubcategoryObject( Category $cat, $sortkey, $pageLength ) {
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// Subcategory; strip the 'Category' namespace from the link text.
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$this->children[] = $this->getSkin()->link(
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$cat->getTitle(),
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null,
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array(),
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array(),
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array( 'known', 'noclasses' )
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);
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$this->children_start_char[] =
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$this->getSubcategorySortChar( $cat->getTitle(), $sortkey );
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}
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/**
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* Add a subcategory to the internal lists, using a title object
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* @deprecated kept for compatibility, please use addSubcategoryObject instead
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*/
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function addSubcategory( Title $title, $sortkey, $pageLength ) {
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$this->addSubcategoryObject( Category::newFromTitle( $title ), $sortkey, $pageLength );
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}
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/**
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* Get the character to be used for sorting subcategories.
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* If there's a link from Category:A to Category:B, the sortkey of the resulting
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* entry in the categorylinks table is Category:A, not A, which it SHOULD be.
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* Workaround: If sortkey == "Category:".$title, than use $title for sorting,
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* else use sortkey...
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*/
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function getSubcategorySortChar( $title, $sortkey ) {
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global $wgContLang;
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if ( $title->getPrefixedText() == $sortkey ) {
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$word = $title->getDBkey();
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} else {
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$word = $sortkey;
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}
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$firstChar = $wgContLang->firstLetterForLists( $word );
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return $wgContLang->convert( $firstChar );
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}
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/**
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* Add a page in the image namespace
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*/
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function addImage( Title $title, $sortkey, $pageLength, $isRedirect = false ) {
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if ( $this->showGallery ) {
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$flip = $this->flip['file'];
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if ( $flip ) {
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$this->gallery->insert( $title );
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} else {
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$this->gallery->add( $title );
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}
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} else {
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$this->addPage( $title, $sortkey, $pageLength, $isRedirect );
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}
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}
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/**
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* Add a miscellaneous page
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*/
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function addPage( $title, $sortkey, $pageLength, $isRedirect = false ) {
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global $wgContLang;
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$this->articles[] = $isRedirect
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? '<span class="redirect-in-category">' .
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$this->getSkin()->link(
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$title,
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null,
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array(),
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array(),
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array( 'known', 'noclasses' )
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) . '</span>'
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: $this->getSkin()->link( $title );
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$this->articles_start_char[] = $wgContLang->convert( $wgContLang->firstLetterForLists( $sortkey ) );
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}
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function finaliseCategoryState() {
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if ( $this->flip['subcat'] ) {
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$this->children = array_reverse( $this->children );
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$this->children_start_char = array_reverse( $this->children_start_char );
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}
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if ( $this->flip['page'] ) {
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$this->articles = array_reverse( $this->articles );
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$this->articles_start_char = array_reverse( $this->articles_start_char );
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}
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}
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function doCategoryQuery() {
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global $wgContLang;
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$dbr = wfGetDB( DB_SLAVE, 'category' );
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$this->nextPage = array(
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'page' => null,
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'subcat' => null,
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'file' => null,
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);
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$this->flip = array( 'page' => false, 'subcat' => false, 'file' => false );
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foreach ( array( 'page', 'subcat', 'file' ) as $type ) {
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# Get the sortkeys for start/end, if applicable. Note that if
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# the collation in the database differs from the one
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# $wgContLang is using, pagination might go totally haywire.
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$extraConds = array( 'cl_type' => $type );
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if ( $this->from[$type] !== null ) {
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$extraConds[] = 'cl_sortkey >= '
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. $dbr->addQuotes( $wgContLang->convertToSortkey( $this->from[$type] ) );
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} elseif ( $this->until[$type] !== null ) {
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$extraConds[] = 'cl_sortkey < '
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. $dbr->addQuotes( $wgContLang->convertToSortkey( $this->until[$type] ) );
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$this->flip[$type] = true;
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}
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$res = $dbr->select(
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array( 'page', 'categorylinks', 'category' ),
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array( 'page_id', 'page_title', 'page_namespace', 'page_len',
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'page_is_redirect', 'cl_sortkey', 'cat_id', 'cat_title',
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'cat_subcats', 'cat_pages', 'cat_files', 'cl_sortkey_prefix' ),
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array( 'cl_to' => $this->title->getDBkey() ) + $extraConds,
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__METHOD__,
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array(
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'USE INDEX' => array( 'categorylinks' => 'cl_sortkey' ),
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'LIMIT' => $this->limit + 1,
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'ORDER BY' => $this->flip[$type] ? 'cl_sortkey DESC' : 'cl_sortkey',
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),
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array(
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'categorylinks' => array( 'INNER JOIN', 'cl_from = page_id' ),
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'category' => array( 'LEFT JOIN', 'cat_title = page_title AND page_namespace = ' . NS_CATEGORY )
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)
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);
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$count = 0;
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foreach ( $res as $row ) {
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$title = Title::newFromRow( $row );
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$rawSortkey = $title->getCategorySortkey( $row->cl_sortkey_prefix );
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if ( ++$count > $this->limit ) {
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# We've reached the one extra which shows that there
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# are additional pages to be had. Stop here...
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$this->nextPage[$type] = $rawSortkey;
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break;
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}
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if ( $title->getNamespace() == NS_CATEGORY ) {
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$cat = Category::newFromRow( $row, $title );
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$this->addSubcategoryObject( $cat, $rawSortkey, $row->page_len );
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} elseif ( $this->showGallery && $title->getNamespace() == NS_FILE ) {
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$this->addImage( $title, $rawSortkey, $row->page_len, $row->page_is_redirect );
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} else {
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$this->addPage( $title, $rawSortkey, $row->page_len, $row->page_is_redirect );
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}
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}
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}
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}
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function getCategoryTop() {
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$r = $this->getCategoryBottom();
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return $r === ''
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? $r
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: "<br style=\"clear:both;\"/>\n" . $r;
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}
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function getSubcategorySection() {
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# Don't show subcategories section if there are none.
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$r = '';
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$rescnt = count( $this->children );
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$dbcnt = $this->cat->getSubcatCount();
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$countmsg = $this->getCountMessage( $rescnt, $dbcnt, 'subcat' );
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if ( $rescnt > 0 ) {
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# Showing subcategories
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$r .= "<div id=\"mw-subcategories\">\n";
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$r .= '<h2>' . wfMsg( 'subcategories' ) . "</h2>\n";
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$r .= $countmsg;
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$r .= $this->getSectionPagingLinks( 'subcat' );
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$r .= $this->formatList( $this->children, $this->children_start_char );
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$r .= $this->getSectionPagingLinks( 'subcat' );
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$r .= "\n</div>";
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}
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return $r;
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}
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function getPagesSection() {
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$ti = htmlspecialchars( $this->title->getText() );
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# Don't show articles section if there are none.
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$r = '';
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# FIXME, here and in the other two sections: we don't need to bother
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# with this rigamarole if the entire category contents fit on one page
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# and have already been retrieved. We can just use $rescnt in that
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# case and save a query and some logic.
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$dbcnt = $this->cat->getPageCount() - $this->cat->getSubcatCount()
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- $this->cat->getFileCount();
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$rescnt = count( $this->articles );
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$countmsg = $this->getCountMessage( $rescnt, $dbcnt, 'article' );
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if ( $rescnt > 0 ) {
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$r = "<div id=\"mw-pages\">\n";
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$r .= '<h2>' . wfMsg( 'category_header', $ti ) . "</h2>\n";
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$r .= $countmsg;
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$r .= $this->getSectionPagingLinks( 'page' );
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$r .= $this->formatList( $this->articles, $this->articles_start_char );
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$r .= $this->getSectionPagingLinks( 'page' );
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$r .= "\n</div>";
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}
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return $r;
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}
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function getImageSection() {
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$r = '';
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if ( $this->showGallery && ! $this->gallery->isEmpty() ) {
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$dbcnt = $this->cat->getFileCount();
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$rescnt = $this->gallery->count();
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$countmsg = $this->getCountMessage( $rescnt, $dbcnt, 'file' );
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$r .= "<div id=\"mw-category-media\">\n";
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$r .= '<h2>' . wfMsg( 'category-media-header', htmlspecialchars( $this->title->getText() ) ) . "</h2>\n";
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$r .= $countmsg;
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$r .= $this->getSectionPagingLinks( 'file' );
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$r .= $this->gallery->toHTML();
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$r .= $this->getSectionPagingLinks( 'file' );
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$r .= "\n</div>";
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}
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return $r;
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}
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/**
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* Get the paging links for a section (subcats/pages/files), to go at the top and bottom
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* of the output.
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*
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* @param $type String: 'page', 'subcat', or 'file'
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* @return String: HTML output, possibly empty if there are no other pages
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*/
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private function getSectionPagingLinks( $type ) {
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if ( $this->until[$type] !== null ) {
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return $this->pagingLinks( $this->nextPage[$type], $this->until[$type], $type );
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} elseif ( $this->nextPage[$type] !== null || $this->from[$type] !== null ) {
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return $this->pagingLinks( $this->from[$type], $this->nextPage[$type], $type );
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} else {
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return '';
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}
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}
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function getCategoryBottom() {
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return '';
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}
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/**
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* Format a list of articles chunked by letter, either as a
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* bullet list or a columnar format, depending on the length.
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*
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* @param $articles Array
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* @param $articles_start_char Array
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* @param $cutoff Int
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* @return String
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* @private
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*/
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function formatList( $articles, $articles_start_char, $cutoff = 6 ) {
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if ( count ( $articles ) > $cutoff ) {
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return $this->columnList( $articles, $articles_start_char );
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} elseif ( count( $articles ) > 0 ) {
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// for short lists of articles in categories.
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return $this->shortList( $articles, $articles_start_char );
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}
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return '';
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}
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|
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/**
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* Format a list of articles chunked by letter in a three-column
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* list, ordered vertically.
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*
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* TODO: Take the headers into account when creating columns, so they're
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* more visually equal.
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*
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* More distant TODO: Scrap this and use CSS columns, whenever IE finally
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* supports those.
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*
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* @param $articles Array
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* @param $articles_start_char Array
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* @return String
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* @private
|
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*/
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function columnList( $articles, $articles_start_char ) {
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$columns = array_combine( $articles, $articles_start_char );
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# Split into three columns
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$columns = array_chunk( $columns, ceil( count( $columns ) / 3 ), true /* preserve keys */ );
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$ret = '<table width="100%"><tr valign="top"><td>';
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$prevchar = null;
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foreach ( $columns as $column ) {
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$colContents = array();
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# Kind of like array_flip() here, but we keep duplicates in an
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# array instead of dropping them.
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foreach ( $column as $article => $char ) {
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if ( !isset( $colContents[$char] ) ) {
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$colContents[$char] = array();
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}
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$colContents[$char][] = $article;
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}
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$first = true;
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foreach ( $colContents as $char => $articles ) {
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$ret .= '<h3>' . htmlspecialchars( $char );
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if ( $first && $char === $prevchar ) {
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# We're continuing a previous chunk at the top of a new
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# column, so add " cont." after the letter.
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$ret .= ' ' . wfMsgHtml( 'listingcontinuesabbrev' );
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}
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$ret .= "</h3>\n";
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$ret .= '<ul><li>';
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$ret .= implode( "</li>\n<li>", $articles );
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$ret .= '</li></ul>';
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$first = false;
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$prevchar = $char;
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}
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$ret .= "</td>\n<td>";
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}
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$ret .= '</td></tr></table>';
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return $ret;
|
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}
|
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|
|
/**
|
|
* Format a list of articles chunked by letter in a bullet list.
|
|
* @param $articles Array
|
|
* @param $articles_start_char Array
|
|
* @return String
|
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* @private
|
|
*/
|
|
function shortList( $articles, $articles_start_char ) {
|
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$r = '<h3>' . htmlspecialchars( $articles_start_char[0] ) . "</h3>\n";
|
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$r .= '<ul><li>' . $articles[0] . '</li>';
|
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for ( $index = 1; $index < count( $articles ); $index++ )
|
|
{
|
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if ( $articles_start_char[$index] != $articles_start_char[$index - 1] )
|
|
{
|
|
$r .= "</ul><h3>" . htmlspecialchars( $articles_start_char[$index] ) . "</h3>\n<ul>";
|
|
}
|
|
|
|
$r .= "<li>{$articles[$index]}</li>";
|
|
}
|
|
$r .= '</ul>';
|
|
return $r;
|
|
}
|
|
|
|
/**
|
|
* Create paging links, as a helper method to getSectionPagingLinks().
|
|
*
|
|
* @param $first String The 'until' parameter for the generated URL
|
|
* @param $last String The 'from' parameter for the genererated URL
|
|
* @param $type String A prefix for parameters, 'page' or 'subcat' or
|
|
* 'file'
|
|
* @return String HTML
|
|
*/
|
|
private function pagingLinks( $first, $last, $type = '' ) {
|
|
global $wgLang;
|
|
$sk = $this->getSkin();
|
|
$limitText = $wgLang->formatNum( $this->limit );
|
|
|
|
$prevLink = wfMsgExt( 'prevn', array( 'escape', 'parsemag' ), $limitText );
|
|
|
|
if ( $first != '' ) {
|
|
$prevQuery = $this->query;
|
|
$prevQuery["{$type}until"] = $first;
|
|
unset( $prevQuery["{$type}from"] );
|
|
$prevLink = $sk->linkKnown(
|
|
$this->title,
|
|
$prevLink,
|
|
array(),
|
|
$prevQuery
|
|
);
|
|
}
|
|
|
|
$nextLink = wfMsgExt( 'nextn', array( 'escape', 'parsemag' ), $limitText );
|
|
|
|
if ( $last != '' ) {
|
|
$lastQuery = $this->query;
|
|
$lastQuery["{$type}from"] = $last;
|
|
unset( $lastQuery["{$type}until"] );
|
|
$nextLink = $sk->linkKnown(
|
|
$this->title,
|
|
$nextLink,
|
|
array(),
|
|
$lastQuery
|
|
);
|
|
}
|
|
|
|
return "($prevLink) ($nextLink)";
|
|
}
|
|
|
|
/**
|
|
* What to do if the category table conflicts with the number of results
|
|
* returned? This function says what. It works the same whether the
|
|
* things being counted are articles, subcategories, or files.
|
|
*
|
|
* Note for grepping: uses the messages category-article-count,
|
|
* category-article-count-limited, category-subcat-count,
|
|
* category-subcat-count-limited, category-file-count,
|
|
* category-file-count-limited.
|
|
*
|
|
* @param $rescnt Int: The number of items returned by our database query.
|
|
* @param $dbcnt Int: The number of items according to the category table.
|
|
* @param $type String: 'subcat', 'article', or 'file'
|
|
* @return String: A message giving the number of items, to output to HTML.
|
|
*/
|
|
private function getCountMessage( $rescnt, $dbcnt, $type ) {
|
|
global $wgLang;
|
|
# There are three cases:
|
|
# 1) The category table figure seems sane. It might be wrong, but
|
|
# we can't do anything about it if we don't recalculate it on ev-
|
|
# ery category view.
|
|
# 2) The category table figure isn't sane, like it's smaller than the
|
|
# number of actual results, *but* the number of results is less
|
|
# than $this->limit and there's no offset. In this case we still
|
|
# know the right figure.
|
|
# 3) We have no idea.
|
|
$totalrescnt = count( $this->articles ) + count( $this->children ) +
|
|
( $this->showGallery ? $this->gallery->count() : 0 );
|
|
|
|
# Check if there's a "from" or "until" for anything
|
|
$fromOrUntil = false;
|
|
foreach ( array( 'page', 'subcat', 'file' ) as $type ) {
|
|
if ( $this->from[$type] !== null || $this->until[$type] !== null ) {
|
|
$fromOrUntil = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ( $dbcnt == $rescnt || ( ( $totalrescnt == $this->limit || $fromOrUntil )
|
|
&& $dbcnt > $rescnt ) )
|
|
{
|
|
# Case 1: seems sane.
|
|
$totalcnt = $dbcnt;
|
|
} elseif ( $totalrescnt < $this->limit && !$fromOrUntil ) {
|
|
# Case 2: not sane, but salvageable. Use the number of results.
|
|
# Since there are fewer than 200, we can also take this opportunity
|
|
# to refresh the incorrect category table entry -- which should be
|
|
# quick due to the small number of entries.
|
|
$totalcnt = $rescnt;
|
|
$this->cat->refreshCounts();
|
|
} else {
|
|
# Case 3: hopeless. Don't give a total count at all.
|
|
return wfMsgExt( "category-$type-count-limited", 'parse',
|
|
$wgLang->formatNum( $rescnt ) );
|
|
}
|
|
return wfMsgExt(
|
|
"category-$type-count",
|
|
'parse',
|
|
$wgLang->formatNum( $rescnt ),
|
|
$wgLang->formatNum( $totalcnt )
|
|
);
|
|
}
|
|
}
|