* Special handling for category description pages.
* Modelled after ImagePage.php.
*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
* @file
*/
-if ( !defined( 'MEDIAWIKI' ) )
- die( 1 );
-
/**
* Special handling for category description pages, showing pages,
* subcategories and file that belong to the category
# Subclasses can change this to override the viewer class.
protected $mCategoryViewerClass = 'CategoryViewer';
- function view() {
- global $wgRequest, $wgUser;
-
- $diff = $wgRequest->getVal( 'diff' );
- $diffOnly = $wgRequest->getBool( 'diffonly', $wgUser->getOption( 'diffonly' ) );
-
- if ( isset( $diff ) && $diffOnly )
- return parent::view();
-
- if ( !wfRunHooks( 'CategoryPageView', array( &$this ) ) )
- return;
-
- if ( NS_CATEGORY == $this->mTitle->getNamespace() ) {
- $this->openShowCategory();
- }
-
- parent::view();
-
- if ( NS_CATEGORY == $this->mTitle->getNamespace() ) {
- $this->closeShowCategory();
- }
- }
-
- /**
- * Don't return a 404 for categories in use.
- */
- function hasViewableContent() {
- if ( parent::hasViewableContent() ) {
- return true;
- } else {
- $cat = Category::newFromTitle( $this->mTitle );
- return $cat->getId() != 0;
- }
- }
-
- function openShowCategory() {
- # For overloading
- }
-
- function closeShowCategory() {
- global $wgOut;
-
- $from = $until = array();
- foreach ( array( 'page', 'subcat', 'file' ) as $type ) {
- # Use $_GET instead of $wgRequest, because the latter helpfully
- # normalizes Unicode, which removes nulls. TODO: do something
- # smarter than passing nulls in URLs. :/
- $from[$type] = isset( $_GET["{$type}from"] ) ? $_GET["{$type}from"] : null;
- $until[$type] = isset( $_GET["{$type}until"] ) ? $_GET["{$type}until"] : null;
- }
-
- $viewer = new $this->mCategoryViewerClass( $this->mTitle, $from, $until, $_GET );
- $wgOut->addHTML( $viewer->getHTML() );
- }
-}
-
-class CategoryViewer {
- var $title, $limit, $from, $until,
- $articles, $articles_start_char,
- $children, $children_start_char,
- $showGallery, $gallery,
- $skin;
- # Category object for this page
- private $cat;
- # The original query array, to be used in generating paging links.
- private $query;
-
- function __construct( $title, $from = '', $until = '', $query = array() ) {
- global $wgCategoryPagingLimit;
- $this->title = $title;
- $this->from = $from;
- $this->until = $until;
- $this->limit = $wgCategoryPagingLimit;
- $this->cat = Category::newFromTitle( $title );
- $this->query = $query;
- unset( $this->query['title'] );
- }
-
- /**
- * Format the category data list.
- *
- * @return string HTML output
- * @private
- */
- function getHTML() {
- global $wgOut, $wgCategoryMagicGallery, $wgContLang;
- wfProfileIn( __METHOD__ );
-
- $this->showGallery = $wgCategoryMagicGallery && !$wgOut->mNoGallery;
-
- $this->clearCategoryState();
- $this->doCategoryQuery();
- $this->finaliseCategoryState();
-
- $r = $this->getSubcategorySection() .
- $this->getPagesSection() .
- $this->getImageSection();
-
- if ( $r == '' ) {
- // If there is no category content to display, only
- // show the top part of the navigation links.
- // FIXME: cannot be completely suppressed because it
- // is unknown if 'until' or 'from' makes this
- // give 0 results.
- $r = $r . $this->getCategoryTop();
- } else {
- $r = $this->getCategoryTop() .
- $r .
- $this->getCategoryBottom();
- }
-
- // Give a proper message if category is empty
- if ( $r == '' ) {
- $r = wfMsgExt( 'category-empty', array( 'parse' ) );
- }
-
- wfProfileOut( __METHOD__ );
- return $wgContLang->convert( $r );
- }
-
- function clearCategoryState() {
- $this->articles = array();
- $this->articles_start_char = array();
- $this->children = array();
- $this->children_start_char = array();
- if ( $this->showGallery ) {
- $this->gallery = new ImageGallery();
- $this->gallery->setHideBadImages();
- }
- }
-
- function getSkin() {
- if ( !$this->skin ) {
- global $wgUser;
- $this->skin = $wgUser->getSkin();
- }
- return $this->skin;
- }
-
- /**
- * Add a subcategory to the internal lists, using a Category object
- */
- function addSubcategoryObject( $cat, $sortkey, $pageLength ) {
- $title = $cat->getTitle();
- $this->addSubcategory( $title, $sortkey, $pageLength );
- }
-
- /**
- * Add a subcategory to the internal lists, using a title object
- * @deprecated kept for compatibility, please use addSubcategoryObject instead
- */
- function addSubcategory( $title, $sortkey, $pageLength ) {
- // Subcategory; strip the 'Category' namespace from the link text.
- $this->children[] = $this->getSkin()->link(
- $title,
- null,
- array(),
- array(),
- array( 'known', 'noclasses' )
- );
-
- $this->children_start_char[] = $this->getSubcategorySortChar( $title, $sortkey );
- }
-
- /**
- * Get the character to be used for sorting subcategories.
- * If there's a link from Category:A to Category:B, the sortkey of the resulting
- * entry in the categorylinks table is Category:A, not A, which it SHOULD be.
- * Workaround: If sortkey == "Category:".$title, than use $title for sorting,
- * else use sortkey...
- */
- function getSubcategorySortChar( $title, $sortkey ) {
- global $wgContLang;
-
- if ( $title->getPrefixedText() == $sortkey ) {
- $word = $title->getDBkey();
- } else {
- $word = $sortkey;
- }
-
- $firstChar = $wgContLang->firstLetterForLists( $word );
-
- return $wgContLang->convert( $firstChar );
- }
-
/**
- * Add a page in the image namespace
+ * @param $title Title
+ * @return WikiCategoryPage
*/
- function addImage( Title $title, $sortkey, $pageLength, $isRedirect = false ) {
- if ( $this->showGallery ) {
- $flip = $this->flip['file'];
- if ( $flip ) {
- $this->gallery->insert( $title );
- } else {
- $this->gallery->add( $title );
- }
- } else {
- $this->addPage( $title, $sortkey, $pageLength, $isRedirect );
- }
+ protected function newPage( Title $title ) {
+ // Overload mPage with a category-specific page
+ return new WikiCategoryPage( $title );
}
/**
- * Add a miscellaneous page
+ * Constructor from a page id
+ * @param $id Int article ID to load
+ * @return CategoryPage|null
*/
- function addPage( $title, $sortkey, $pageLength, $isRedirect = false ) {
- global $wgContLang;
- $this->articles[] = $isRedirect
- ? '<span class="redirect-in-category">' .
- $this->getSkin()->link(
- $title,
- null,
- array(),
- array(),
- array( 'known', 'noclasses' )
- ) . '</span>'
- : $this->getSkin()->link( $title );
-
- $this->articles_start_char[] = $wgContLang->convert( $wgContLang->firstLetterForLists( $sortkey ) );
- }
-
- function finaliseCategoryState() {
- if ( $this->flip['subcat'] ) {
- $this->children = array_reverse( $this->children );
- $this->children_start_char = array_reverse( $this->children_start_char );
- }
- if ( $this->flip['page'] ) {
- $this->articles = array_reverse( $this->articles );
- $this->articles_start_char = array_reverse( $this->articles_start_char );
- }
+ public static function newFromID( $id ) {
+ $t = Title::newFromID( $id );
+ # @todo FIXME: Doesn't inherit right
+ return $t == null ? null : new self( $t );
+ # return $t == null ? null : new static( $t ); // PHP 5.3
}
- function doCategoryQuery() {
- global $wgContLang;
-
- $dbr = wfGetDB( DB_SLAVE, 'category' );
-
- $this->nextPage = array(
- 'page' => null,
- 'subcat' => null,
- 'file' => null,
- );
- $this->flip = array( 'page' => false, 'subcat' => false, 'file' => false );
-
- foreach ( array( 'page', 'subcat', 'file' ) as $type ) {
- # Get the sortkeys for start/end, if applicable. Note that if
- # the collation in the database differs from the one
- # $wgContLang is using, pagination might go totally haywire.
- $extraConds = array( 'cl_type' => $type );
- if ( $this->from[$type] !== null ) {
- $extraConds[] = 'cl_sortkey >= '
- . $dbr->addQuotes( $wgContLang->convertToSortkey( $this->from[$type] ) );
- } elseif ( $this->until[$type] !== null ) {
- $extraConds[] = 'cl_sortkey < '
- . $dbr->addQuotes( $wgContLang->convertToSortkey( $this->until[$type] ) );
- $this->flip[$type] = true;
- }
-
- $res = $dbr->select(
- array( 'page', 'categorylinks', 'category' ),
- array( 'page_id', 'page_title', 'page_namespace', 'page_len',
- 'page_is_redirect', 'cl_sortkey', 'cat_id', 'cat_title',
- 'cat_subcats', 'cat_pages', 'cat_files', 'cl_sortkey_prefix' ),
- array( 'cl_to' => $this->title->getDBkey() ) + $extraConds,
- __METHOD__,
- array(
- 'USE INDEX' => array( 'categorylinks' => 'cl_sortkey' ),
- 'LIMIT' => $this->limit + 1,
- 'ORDER BY' => $this->flip[$type] ? 'cl_sortkey DESC' : 'cl_sortkey',
- ),
- array(
- 'categorylinks' => array( 'INNER JOIN', 'cl_from = page_id' ),
- 'category' => array( 'LEFT JOIN', 'cat_title = page_title AND page_namespace = ' . NS_CATEGORY )
- )
- );
-
- $count = 0;
- foreach ( $res as $row ) {
- $title = Title::newFromRow( $row );
- $rawSortkey = $title->getCategorySortkey( $row->cl_sortkey_prefix );
-
- if ( ++$count > $this->limit ) {
- # We've reached the one extra which shows that there
- # are additional pages to be had. Stop here...
- $this->nextPage[$type] = $rawSortkey;
- break;
- }
+ function view() {
+ $request = $this->getContext()->getRequest();
+ $diff = $request->getVal( 'diff' );
+ $diffOnly = $request->getBool( 'diffonly',
+ $this->getContext()->getUser()->getOption( 'diffonly' ) );
- if ( $title->getNamespace() == NS_CATEGORY ) {
- $cat = Category::newFromRow( $row, $title );
- $this->addSubcategoryObject( $cat, $rawSortkey, $row->page_len );
- } elseif ( $this->showGallery && $title->getNamespace() == NS_FILE ) {
- $this->addImage( $title, $rawSortkey, $row->page_len, $row->page_is_redirect );
- } else {
- $this->addPage( $title, $rawSortkey, $row->page_len, $row->page_is_redirect );
- }
- }
+ if ( isset( $diff ) && $diffOnly ) {
+ parent::view();
+ return;
}
- }
- function getCategoryTop() {
- $r = $this->getCategoryBottom();
- return $r === ''
- ? $r
- : "<br style=\"clear:both;\"/>\n" . $r;
- }
-
- function getSubcategorySection() {
- # Don't show subcategories section if there are none.
- $r = '';
- $rescnt = count( $this->children );
- $dbcnt = $this->cat->getSubcatCount();
- $countmsg = $this->getCountMessage( $rescnt, $dbcnt, 'subcat' );
-
- if ( $rescnt > 0 ) {
- # Showing subcategories
- $r .= "<div id=\"mw-subcategories\">\n";
- $r .= '<h2>' . wfMsg( 'subcategories' ) . "</h2>\n";
- $r .= $countmsg;
- $r .= $this->getSectionPagingLinks( 'subcat' );
- $r .= $this->formatList( $this->children, $this->children_start_char );
- $r .= $this->getSectionPagingLinks( 'subcat' );
- $r .= "\n</div>";
+ if ( !wfRunHooks( 'CategoryPageView', array( &$this ) ) ) {
+ return;
}
- return $r;
- }
- function getPagesSection() {
- $ti = htmlspecialchars( $this->title->getText() );
- # Don't show articles section if there are none.
- $r = '';
-
- # FIXME, here and in the other two sections: we don't need to bother
- # with this rigamarole if the entire category contents fit on one page
- # and have already been retrieved. We can just use $rescnt in that
- # case and save a query and some logic.
- $dbcnt = $this->cat->getPageCount() - $this->cat->getSubcatCount()
- - $this->cat->getFileCount();
- $rescnt = count( $this->articles );
- $countmsg = $this->getCountMessage( $rescnt, $dbcnt, 'article' );
-
- if ( $rescnt > 0 ) {
- $r = "<div id=\"mw-pages\">\n";
- $r .= '<h2>' . wfMsg( 'category_header', $ti ) . "</h2>\n";
- $r .= $countmsg;
- $r .= $this->getSectionPagingLinks( 'page' );
- $r .= $this->formatList( $this->articles, $this->articles_start_char );
- $r .= $this->getSectionPagingLinks( 'page' );
- $r .= "\n</div>";
+ $title = $this->getTitle();
+ if ( NS_CATEGORY == $title->getNamespace() ) {
+ $this->openShowCategory();
}
- return $r;
- }
- function getImageSection() {
- $r = '';
- if ( $this->showGallery && ! $this->gallery->isEmpty() ) {
- $dbcnt = $this->cat->getFileCount();
- $rescnt = $this->gallery->count();
- $countmsg = $this->getCountMessage( $rescnt, $dbcnt, 'file' );
-
- $r .= "<div id=\"mw-category-media\">\n";
- $r .= '<h2>' . wfMsg( 'category-media-header', htmlspecialchars( $this->title->getText() ) ) . "</h2>\n";
- $r .= $countmsg;
- $r .= $this->getSectionPagingLinks( 'file' );
- $r .= $this->gallery->toHTML();
- $r .= $this->getSectionPagingLinks( 'file' );
- $r .= "\n</div>";
- }
- return $r;
- }
+ parent::view();
- /**
- * Get the paging links for a section (subcats/pages/files), to go at the top and bottom
- * of the output.
- *
- * @param $type String: 'page', 'subcat', or 'file'
- * @return String: HTML output, possibly empty if there are no other pages
- */
- private function getSectionPagingLinks( $type ) {
- if ( $this->until[$type] !== null ) {
- return $this->pagingLinks( $this->nextPage[$type], $this->until[$type], $type );
- } elseif ( $this->nextPage[$type] !== null || $this->from[$type] !== null ) {
- return $this->pagingLinks( $this->from[$type], $this->nextPage[$type], $type );
- } else {
- return '';
+ if ( NS_CATEGORY == $title->getNamespace() ) {
+ $this->closeShowCategory();
}
}
- function getCategoryBottom() {
- return '';
- }
-
- /**
- * Format a list of articles chunked by letter, either as a
- * bullet list or a columnar format, depending on the length.
- *
- * @param $articles Array
- * @param $articles_start_char Array
- * @param $cutoff Int
- * @return String
- * @private
- */
- function formatList( $articles, $articles_start_char, $cutoff = 6 ) {
- if ( count ( $articles ) > $cutoff ) {
- return $this->columnList( $articles, $articles_start_char );
- } elseif ( count( $articles ) > 0 ) {
- // for short lists of articles in categories.
- return $this->shortList( $articles, $articles_start_char );
- }
- return '';
+ function openShowCategory() {
+ # For overloading
}
- /**
- * Format a list of articles chunked by letter in a three-column
- * list, ordered vertically.
- *
- * TODO: Take the headers into account when creating columns, so they're
- * more visually equal.
- *
- * More distant TODO: Scrap this and use CSS columns, whenever IE finally
- * supports those.
- *
- * @param $articles Array
- * @param $articles_start_char Array
- * @return String
- * @private
- */
- function columnList( $articles, $articles_start_char ) {
- $columns = array_combine( $articles, $articles_start_char );
- # Split into three columns
- $columns = array_chunk( $columns, ceil( count( $columns ) / 3 ), true /* preserve keys */ );
+ function closeShowCategory() {
+ // Use these as defaults for back compat --catrope
+ $request = $this->getContext()->getRequest();
+ $oldFrom = $request->getVal( 'from' );
+ $oldUntil = $request->getVal( 'until' );
- $ret = '<table width="100%"><tr valign="top"><td>';
- $prevchar = null;
+ $reqArray = $request->getValues();
- foreach ( $columns as $column ) {
- $colContents = array();
+ $from = $until = array();
+ foreach ( array( 'page', 'subcat', 'file' ) as $type ) {
+ $from[$type] = $request->getVal( "{$type}from", $oldFrom );
+ $until[$type] = $request->getVal( "{$type}until", $oldUntil );
- # Kind of like array_flip() here, but we keep duplicates in an
- # array instead of dropping them.
- foreach ( $column as $article => $char ) {
- if ( !isset( $colContents[$char] ) ) {
- $colContents[$char] = array();
- }
- $colContents[$char][] = $article;
+ // Do not want old-style from/until propagating in nav links.
+ if ( !isset( $reqArray["{$type}from"] ) && isset( $reqArray["from"] ) ) {
+ $reqArray["{$type}from"] = $reqArray["from"];
}
-
- $first = true;
- foreach ( $colContents as $char => $articles ) {
- $ret .= '<h3>' . htmlspecialchars( $char );
- if ( $first && $char === $prevchar ) {
- # We're continuing a previous chunk at the top of a new
- # column, so add " cont." after the letter.
- $ret .= ' ' . wfMsgHtml( 'listingcontinuesabbrev' );
- }
- $ret .= "</h3>\n";
-
- $ret .= '<ul><li>';
- $ret .= implode( "</li>\n<li>", $articles );
- $ret .= '</li></ul>';
-
- $first = false;
- $prevchar = $char;
+ if ( !isset( $reqArray["{$type}to"] ) && isset( $reqArray["to"] ) ) {
+ $reqArray["{$type}to"] = $reqArray["to"];
}
-
- $ret .= "</td>\n<td>";
}
- $ret .= '</td></tr></table>';
- return $ret;
- }
-
- /**
- * Format a list of articles chunked by letter in a bullet list.
- * @param $articles Array
- * @param $articles_start_char Array
- * @return String
- * @private
- */
- function shortList( $articles, $articles_start_char ) {
- $r = '<h3>' . htmlspecialchars( $articles_start_char[0] ) . "</h3>\n";
- $r .= '<ul><li>' . $articles[0] . '</li>';
- for ( $index = 1; $index < count( $articles ); $index++ )
- {
- if ( $articles_start_char[$index] != $articles_start_char[$index - 1] )
- {
- $r .= "</ul><h3>" . htmlspecialchars( $articles_start_char[$index] ) . "</h3>\n<ul>";
- }
+ unset( $reqArray["from"] );
+ unset( $reqArray["to"] );
- $r .= "<li>{$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 );
-
- if ( $dbcnt == $rescnt || ( ( $totalrescnt == $this->limit || $this->from
- || $this->until ) && $dbcnt > $rescnt ) )
- {
- # Case 1: seems sane.
- $totalcnt = $dbcnt;
- } elseif ( $totalrescnt < $this->limit && !$this->from && !$this->until ) {
- # 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 )
- );
+ $viewer = new $this->mCategoryViewerClass( $this->getContext()->getTitle(), $this->getContext(), $from, $until, $reqArray );
+ $this->getContext()->getOutput()->addHTML( $viewer->getHTML() );
}
}