<?php
/**
+ * @todo Use some variant of Pager or something; the pagination here is lousy.
+ *
* @file
* @ingroup SpecialPage
*/
$opts->add( 'target', '' );
$opts->add( 'namespace', '', FormOptions::INTNULL );
+ $opts->add( 'limit', 50 );
+ $opts->add( 'from', 0 );
+ $opts->add( 'back', 0 );
$opts->add( 'hideredirs', false );
$opts->add( 'hidetrans', false );
$opts->add( 'hidelinks', false );
$opts->add( 'hideimages', false );
$opts->fetchValuesFromRequest( $this->request );
+ $opts->validateIntBounds( 'limit', 0, 5000 );
// Give precedence to subpage syntax
if ( isset($this->par) ) {
$wgOut->setPageTitle( wfMsgExt( 'whatlinkshere-title', 'escape', $this->target->getPrefixedText() ) );
$wgOut->setSubtitle( wfMsgHtml( 'linklistsub' ) );
- $wgOut->addHTML( wfMsgExt( 'whatlinkshere-barrow', array( 'escapenoentities') ) . ' ' .
- $this->skin->makeLinkObj($this->target, '', 'redirect=no' )."<br />\n");
+ $wgOut->addHTML( wfMsgExt( 'whatlinkshere-barrow', array( 'escapenoentities') ) . ' ' .$this->skin->makeLinkObj($this->target, '', 'redirect=no' )."<br />\n");
- $this->showIndirectLinks( 0, $this->target );
+ $this->showIndirectLinks( 0, $this->target, $opts->getValue( 'limit' ),
+ $opts->getValue( 'from' ), $opts->getValue( 'back' ) );
}
/**
* @param int $level Recursion level
* @param Title $target Target title
- * @param int $limit Result limit (used for redirects)
- * For the top level, this outputs the link list to $wgOut.
- * For sublevels, it returns the string of the HTML.
- * @returns mixed (true/string)
+ * @param int $limit Number of entries to display
+ * @param Title $from Display from this article ID
+ * @param Title $back Display from this article ID at backwards scrolling
+ * @private
*/
- function showIndirectLinks( $level, $target, $limit=false ) {
- global $wgOut;
+ function showIndirectLinks( $level, $target, $limit, $from = 0, $back = 0 ) {
+ global $wgOut, $wgMaxRedirectLinksRetrieved;
$dbr = wfGetDB( DB_SLAVE );
$options = array();
$hideimages = $target->getNamespace() != NS_IMAGE || $this->opts->getValue( 'hideimages' );
$fetchlinks = (!$hidelinks || !$hideredirs);
-
+
+ // Make the query
+ $plConds = array(
+ 'page_id=pl_from',
+ 'pl_namespace' => $target->getNamespace(),
+ 'pl_title' => $target->getDBkey(),
+ );
+ if( $hideredirs ) {
+ $plConds['page_is_redirect'] = 0;
+ } elseif( $hidelinks ) {
+ $plConds['page_is_redirect'] = 1;
+ }
+
+ $tlConds = array(
+ 'page_id=tl_from',
+ 'tl_namespace' => $target->getNamespace(),
+ 'tl_title' => $target->getDBkey(),
+ );
+
+ $ilConds = array(
+ 'page_id=il_from',
+ 'il_to' => $target->getDBkey(),
+ );
+
$namespace = $this->opts->getValue( 'namespace' );
-
- $pager = new WhatLinksHerePager( $this, $target, $level, $limit, $namespace,
- $hidelinks, $hideredirs, $hidetrans, $hideimages );
+ if ( is_int($namespace) ) {
+ $plConds['page_namespace'] = $namespace;
+ $tlConds['page_namespace'] = $namespace;
+ $ilConds['page_namespace'] = $namespace;
+ }
+
+ if ( $from ) {
+ $tlConds[] = "tl_from >= $from";
+ $plConds[] = "pl_from >= $from";
+ $ilConds[] = "il_from >= $from";
+ }
+
+ // Read an extra row as an at-end check
+ $queryLimit = $limit + 1;
+
+ // Enforce join order, sometimes namespace selector may
+ // trigger filesorts which are far less efficient than scanning many entries
+ $options[] = 'STRAIGHT_JOIN';
+
+ $options['LIMIT'] = $queryLimit;
+ $fields = array( 'page_id', 'page_namespace', 'page_title', 'page_is_redirect' );
+
+ if( $fetchlinks ) {
+ $options['ORDER BY'] = 'pl_from';
+ $plRes = $dbr->select( array( 'pagelinks', 'page' ), $fields,
+ $plConds, __METHOD__, $options );
+ }
+
+ if( !$hidetrans ) {
+ $options['ORDER BY'] = 'tl_from';
+ $tlRes = $dbr->select( array( 'templatelinks', 'page' ), $fields,
+ $tlConds, __METHOD__, $options );
+ }
+
+ if( !$hideimages ) {
+ $options['ORDER BY'] = 'il_from';
+ $ilRes = $dbr->select( array( 'imagelinks', 'page' ), $fields,
+ $ilConds, __METHOD__, $options );
+ }
- if( !$pager->getNumRows() ) {
+ if( ( !$fetchlinks || !$dbr->numRows($plRes) ) && ( $hidetrans || !$dbr->numRows($tlRes) ) && ( $hideimages || !$dbr->numRows($ilRes) ) ) {
if ( 0 == $level ) {
$wgOut->addHTML( $this->whatlinkshereForm() );
$errMsg = is_int($namespace) ? 'nolinkshere-ns' : 'nolinkshere';
}
return;
}
-
- // If this is a sub-level, return out a string
- if( $level > 0 ) {
- return $pager->getBody();
+
+ // Read the rows into an array and remove duplicates
+ // templatelinks comes second so that the templatelinks row overwrites the
+ // pagelinks row, so we get (inclusion) rather than nothing
+ if( $fetchlinks ) {
+ while ( $row = $dbr->fetchObject( $plRes ) ) {
+ $row->is_template = 0;
+ $row->is_image = 0;
+ $rows[$row->page_id] = $row;
+ }
+ $dbr->freeResult( $plRes );
+
+ }
+ if( !$hidetrans ) {
+ while ( $row = $dbr->fetchObject( $tlRes ) ) {
+ $row->is_template = 1;
+ $row->is_image = 0;
+ $rows[$row->page_id] = $row;
+ }
+ $dbr->freeResult( $tlRes );
+ }
+ if( !$hideimages ) {
+ while ( $row = $dbr->fetchObject( $ilRes ) ) {
+ $row->is_template = 0;
+ $row->is_image = 1;
+ $rows[$row->page_id] = $row;
+ }
+ $dbr->freeResult( $ilRes );
}
- if( $level == 0 ) {
+ // Sort by key and then change the keys to 0-based indices
+ ksort( $rows );
+ $rows = array_values( $rows );
+
+ $numRows = count( $rows );
+
+ // Work out the start and end IDs, for prev/next links
+ if ( $numRows > $limit ) {
+ // More rows available after these ones
+ // Get the ID from the last row in the result set
+ $nextId = $rows[$limit]->page_id;
+ // Remove undisplayed rows
+ $rows = array_slice( $rows, 0, $limit );
+ } else {
+ // No more rows after
+ $nextId = false;
+ }
+ $prevId = $from;
+
+ if ( $level == 0 ) {
$wgOut->addHTML( $this->whatlinkshereForm() );
$wgOut->addHTML( $this->getFilterPanel() );
$wgOut->addWikiMsg( 'linkshere', $this->target->getPrefixedText() );
- $wgOut->addHTML( '<hr/>' );
- // Add nav links only to top list
- $wgOut->addHTML( $pager->getNavigationBar() );
+
+ $prevnext = $this->getPrevNext( $prevId, $nextId );
+ $wgOut->addHTML( $prevnext );
}
-
- $wgOut->addHTML( $pager->getBody() );
-
- if ( $level == 0 ) {
- // Add nav links only to top list
- $wgOut->addHTML( $pager->getNavigationBar() );
+
+ $wgOut->addHTML( $this->listStart() );
+ foreach ( $rows as $row ) {
+ $nt = Title::makeTitle( $row->page_namespace, $row->page_title );
+
+ if ( $row->page_is_redirect && $level < 2 ) {
+ $wgOut->addHTML( $this->listItem( $row, $nt, true ) );
+ $this->showIndirectLinks( $level + 1, $nt, $wgMaxRedirectLinksRetrieved );
+ $wgOut->addHTML( Xml::closeElement( 'li' ) );
+ } else {
+ $wgOut->addHTML( $this->listItem( $row, $nt ) );
+ }
+ }
+
+ $wgOut->addHTML( $this->listEnd() );
+
+ if( $level == 0 ) {
+ $wgOut->addHTML( $prevnext );
}
- return true;
}
- public function listItem( $row, $nt, $notClose = false ) {
+ protected function listStart() {
+ return Xml::openElement( 'ul' );
+ }
+
+ protected function listItem( $row, $nt, $notClose = false ) {
# local message cache
static $msgcache = null;
if ( $msgcache === null ) {
$props = array();
if ( $row->page_is_redirect )
$props[] = $msgcache['isredirect'];
- if ( $row->template )
+ if ( $row->is_template )
$props[] = $msgcache['istemplate'];
- if ( $row->image )
+ if( $row->is_image )
$props[] = $msgcache['isimage'];
if ( count( $props ) ) {
Xml::tags( 'li', null, "$link $propsText $wlh" ) . "\n";
}
+ protected function listEnd() {
+ return Xml::closeElement( 'ul' );
+ }
+
protected function wlhLink( Title $target, $text ) {
static $title = null;
if ( $title === null )
return $this->skin->makeKnownLinkObj( $this->selfTitle, $text, $query );
}
+ function getPrevNext( $prevId, $nextId ) {
+ global $wgLang;
+ $currentLimit = $this->opts->getValue( 'limit' );
+ $fmtLimit = $wgLang->formatNum( $currentLimit );
+ $prev = wfMsgExt( 'whatlinkshere-prev', array( 'parsemag', 'escape' ), $fmtLimit );
+ $next = wfMsgExt( 'whatlinkshere-next', array( 'parsemag', 'escape' ), $fmtLimit );
+
+ $changed = $this->opts->getChangedValues();
+ unset($changed['target']); // Already in the request title
+
+ if ( 0 != $prevId ) {
+ $overrides = array( 'from' => $this->opts->getValue( 'back' ) );
+ $prev = $this->makeSelfLink( $prev, wfArrayToCGI( $overrides, $changed ) );
+ }
+ if ( 0 != $nextId ) {
+ $overrides = array( 'from' => $nextId, 'back' => $prevId );
+ $next = $this->makeSelfLink( $next, wfArrayToCGI( $overrides, $changed ) );
+ }
+
+ $limitLinks = array();
+ foreach ( $this->limits as $limit ) {
+ $prettyLimit = $wgLang->formatNum( $limit );
+ $overrides = array( 'limit' => $limit );
+ $limitLinks[] = $this->makeSelfLink( $prettyLimit, wfArrayToCGI( $overrides, $changed ) );
+ }
+
+ $nums = implode ( ' | ', $limitLinks );
+
+ return wfMsgHtml( 'viewprevnext', $prev, $next, $nums );
+ }
+
function whatlinkshereForm() {
global $wgScript, $wgTitle;
// We get nicer value from the title object
$this->opts->consumeValue( 'target' );
+ // Reset these for new requests
+ $this->opts->consumeValues( array( 'back', 'from' ) );
$target = $this->target ? $this->target->getPrefixedText() : '';
$namespace = $this->opts->consumeValue( 'namespace' );
return Xml::fieldset( wfMsg( 'whatlinkshere-filters' ), implode( ' | ', $links ) );
}
}
-
-/**
- * Pager for Special:WhatLinksHere
- * @ingroup SpecialPage Pager
- */
-class WhatLinksHerePager extends AlphabeticPager {
- protected $form, $target, $level, $limit, $namespace, $hidelinks, $hideredirs, $hidetrans, $hideimages;
-
- function __construct( $form, $target, $level, $limit, $namespace, $hidelinks, $hideredirs, $hidetrans, $hideimages ) {
- parent::__construct();
- $this->mForm = $form;
-
- $this->target = $target;
- $this->namespace = $namespace;
- $this->hidelinks = (bool)$hidelinks;
- $this->hideredirs = (bool)$hideredirs;
- $this->hidetrans = (bool)$hidetrans;
- $this->hideimages = (bool)$hideimages;
-
- $this->upperLimit = $limit; // limit cannot pass this
- $this->level = intval($level); // recursion depth
- }
-
- function getDefaultQuery() {
- $query = parent::getDefaultQuery();
- $query['target'] = $this->target->getPrefixedDBKey();
- return $query;
- }
-
- function getQueryInfo() {
- $queryInfo = array();
- $options = array();
-
- $fields = array( 'page_id', 'page_namespace', 'page_title', 'page_is_redirect' );
-
- $plConds = array(
- 'page_id=pl_from',
- 'pl_namespace' => $this->target->getNamespace(),
- 'pl_title' => $this->target->getDBkey(),
- );
- if( $this->hideredirs ) {
- $plConds['page_is_redirect'] = 0;
- } else if( $this->hidelinks ) {
- $plConds['page_is_redirect'] = 1;
- }
-
- $tlConds = array(
- 'page_id=tl_from',
- 'tl_namespace' => $this->target->getNamespace(),
- 'tl_title' => $this->target->getDBkey(),
- );
-
- $ilConds = array(
- 'page_id=il_from',
- 'il_to' => $this->target->getDBkey(),
- );
-
- if( is_int($this->namespace) ) {
- $plConds['page_namespace'] = $this->namespace;
- $tlConds['page_namespace'] = $this->namespace;
- $ilConds['page_namespace'] = $this->namespace;
- }
-
- $plOptions['ORDER BY'] = 'pl_from';
- $tlOptions['ORDER BY'] = 'tl_from';
- $ilOptions['ORDER BY'] = 'il_from';
-
- // Enforce join order, sometimes namespace selector may
- // trigger filesorts which are far less efficient than scanning many entries
- $plOptions['USE INDEX'] = array('pagelinks' => 'pl_namespace');
- $tlOptions['USE INDEX'] = array('templatelinks' => 'tl_namespace');
- $ilOptions['USE INDEX'] = array('imagelinks' => 'il_to');
-
- $fetchlinks = (!$this->hidelinks || !$this->hideredirs);
- if( $fetchlinks ) {
- $plQueryInfo = array(
- 'tables' => array( 'pagelinks', 'page' ),
- 'fields' => array_merge($fields,array('0 AS is_template','0 AS is_image')),
- 'conds' => $plConds,
- 'options' => array_merge($options,$plOptions)
- );
- $queryInfo[] = $plQueryInfo;
- }
-
- if( !$this->hidetrans ) {
- $tlQueryInfo = array(
- 'tables' => array( 'templatelinks', 'page' ),
- 'fields' => array_merge($fields,array('1 AS is_template','0 AS is_image')),
- 'conds' => $tlConds,
- 'options' => array_merge($options,$tlOptions)
- );
- $queryInfo[] = $tlQueryInfo;
- }
-
- if( !$this->hideimages ) {
- $ilQueryInfo = array(
- 'tables' => array( 'imagelinks', 'page' ),
- 'fields' => array_merge($fields,array('0 AS is_template','1 AS is_image')),
- 'conds' => $ilConds,
- 'options' => array_merge($options,$ilOptions)
- );
- $queryInfo[] = $ilQueryInfo;
- }
- return $queryInfo;
- }
-
- /**
- * Do a query with specified parameters
- *
- * @param string $offset Index offset, inclusive
- * @param integer $limit Exact query limit
- * @param boolean $descending Query direction, false for ascending, true for descending
- * @return ResultWrapper
- */
- function reallyDoQuery( $offset, $limit, $descending ) {
- $fname = __METHOD__ . ' (' . get_class( $this ) . ')';
- $queryInfo = $this->getQueryInfo();
- # Make sure a valid wrapper is always returned!
- if( empty($queryInfo) ) {
- return new ResultWrapper( $this->mDb, false );
- }
- $SQLqueries = array();
- // Redirect subqueries have an upper limit for perfomance.
- // If one is given, override the requested limit with this if smaller.
- $limit = $this->upperLimit ? min( $limit, $this->upperLimit ) : $limit;
- // Some code here lifted from Pager.php
- foreach( $queryInfo as $info ) {
- $tables = $info['tables'];
- $fields = $info['fields'];
- $conds = isset( $info['conds'] ) ? $info['conds'] : array();
- $options = isset( $info['options'] ) ? $info['options'] : array();
- $join_conds = isset( $info['join_conds'] ) ? $info['join_conds'] : array();
- $pagefield = $options['ORDER BY'];
- if ( $descending ) {
- $operator = '>';
- } else {
- $options['ORDER BY'] .= ' DESC';
- $operator = '<';
- }
- if ( $offset != '' ) {
- $conds[] = $pagefield . $operator . $this->mDb->addQuotes( $offset );
- }
- $options['LIMIT'] = intval( $limit );
- $SQLqueries[] = '('.$this->mDb->selectSQLText( $tables, $fields, $conds, $fname, $options, $join_conds ).')';
- }
- // Construct the final query. UNION the mini-queries and merge the results.
- $fields = 'page_id,page_namespace,page_title,page_is_redirect,MAX(is_template) AS template,MAX(is_image) AS image';
- $SQL = "SELECT $fields FROM (" . implode(' UNION ',$SQLqueries) . ") AS result_links";
- // Remove duplicates within the result set.
- $SQL .= ' GROUP BY page_id';
- // Use proper order of result set
- $SQL .= " ORDER BY {$this->mIndexField}";
- $SQL .= $descending ? '' : ' DESC';
- // Cut off at the specified limit
- $SQL .= ' LIMIT ' . intval( $limit );
- # Run the query!
- $res = $this->mDb->query( $SQL, __METHOD__ );
- return new ResultWrapper( $this->mDb, $res );
- }
-
- function getIndexField() {
- return 'page_id';
- }
-
- function getStartBody() {
- wfProfileIn( __METHOD__ );
- # Do a link batch query
- $lb = new LinkBatch;
- while( $row = $this->mResult->fetchObject() ) {
- $lb->add( $row->page_namespace, $row->page_title );
- }
- $lb->execute();
- wfProfileOut( __METHOD__ );
- return "<ul>\n";
- }
-
- function getEndBody() {
- return "</ul>\n";
- }
-
- function formatRow( $row ) {
- global $wgMaxRedirectLinksRetrieved;
- $nt = Title::makeTitle( $row->page_namespace, $row->page_title );
- # For redirects, recursively list out the links there...unless
- # we hit the maxixum recurision depth.
- if( $row->page_is_redirect && $this->level < 2 ) {
- return $this->mForm->listItem( $row, $nt, true ) .
- $this->mForm->showIndirectLinks( $this->level + 1, $nt, $wgMaxRedirectLinksRetrieved ) .
- Xml::closeElement( 'li' );
- } else {
- return $this->mForm->listItem( $row, $nt );
- }
- }
-}
dépôts / lhc / web / wiklou.git / commitdiff