X-Git-Url: https://git.cyclocoop.org/?a=blobdiff_plain;f=includes%2FSpecialWhatlinkshere.php;h=d51e13ad826942c493de0def25c0506649c3ecf9;hb=228f097d954469673634ea47c08ccc9adddca7dd;hp=dff036a1d0b7646720b4a18f96c7aa06aeb301d8;hpb=f9619da3f02b4759ae92250c483d4bf14dfd9ee8;p=lhc%2Fweb%2Fwiklou.git

diff --git a/includes/SpecialWhatlinkshere.php b/includes/SpecialWhatlinkshere.php
index dff036a1d0..d51e13ad82 100644
--- a/includes/SpecialWhatlinkshere.php
+++ b/includes/SpecialWhatlinkshere.php
@@ -1,5 +1,6 @@
 <?php
 /**
+ * @TODO: Use some variant of Pager or something; the pagination here is lousy.
  *
  * @addtogroup SpecialPage
  */
@@ -19,13 +20,20 @@ function wfSpecialWhatlinkshere($par = NULL) {
  * @addtogroup SpecialPage
  */
 class WhatLinksHerePage {
-	var $request, $par;
-	var $limit, $from, $back, $target, $namespace;
-	var $selfTitle, $skin;
+	// Stored data
+	protected $par;
 
-	function WhatLinksHerePage( &$request, $par = null ) {
+	// Stored objects
+	protected $opts, $target, $selfTitle;
+
+	// Stored globals
+	protected $skin, $request;
+
+	protected $limits = array( 20, 50, 100, 250, 500 );
+
+	function WhatLinksHerePage( $request, $par = null ) {
 		global $wgUser;
-		$this->request =& $request;
+		$this->request = $request;
 		$this->skin = $wgUser->getSkin();
 		$this->par = $par;
 	}
@@ -33,33 +41,42 @@ class WhatLinksHerePage {
 	function execute() {
 		global $wgOut;
 
-		$this->limit = min( $this->request->getInt( 'limit', 50 ), 5000 );
-		if ( $this->limit <= 0 ) {
-			$this->limit = 50;
+		$opts = new FormOptions();
+
+		$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 );
+		$opts->validateIntBounds( 'limit', 0, 5000 );
+		if ( isset($this->par) ) {
+			$opts->setValue( 'target', $this->par );
 		}
-		$this->from = $this->request->getInt( 'from' );
-		$this->back = $this->request->getInt( 'back' );
 
-		$targetString = isset($this->par) ? $this->par : $this->request->getVal( 'target' );
+		// Bind to member variable
+		$this->opts = $opts;
 
-		if (is_null($targetString)) {
-			$wgOut->showErrorPage( 'notargettitle', 'notargettext' );
-			return;
-		}
-
-		$this->target = Title::newFromURL( $targetString );
+		$this->target = Title::newFromURL( $opts->getValue( 'target' ) );
 		if( !$this->target ) {
-			$wgOut->showErrorPage( 'notargettitle', 'notargettext' );
+			$wgOut->addHTML( $this->whatlinkshereForm() );
 			return;
 		}
 		$this->selfTitle = Title::makeTitleSafe( NS_SPECIAL,
 			'Whatlinkshere/' . $this->target->getPrefixedDBkey() );
-		$wgOut->setPagetitle( $this->target->getPrefixedText() );
+
+		$wgOut->setPageTitle( wfMsg( 'whatlinkshere-title', $this->target->getPrefixedText() ) );
 		$wgOut->setSubtitle( wfMsg( 'linklistsub' ) );
 
-		$wgOut->addHTML( wfMsg( 'whatlinkshere-barrow' ) . ' '  .$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->limit, $this->from, $this->back );
+		$this->showIndirectLinks( 0, $this->target, $opts->getValue( 'limit' ),
+			$opts->getValue( 'from' ), $opts->getValue( 'back' ) );
 	}
 
 	/**
@@ -71,18 +88,16 @@ class WhatLinksHerePage {
 	 * @private
 	 */
 	function showIndirectLinks( $level, $target, $limit, $from = 0, $back = 0 ) {
-		global $wgOut;
-		$fname = 'WhatLinksHerePage::showIndirectLinks';
-		$dbr = wfGetDB( DB_READ );
+		global $wgOut, $wgMaxRedirectLinksRetrieved;
+		$dbr = wfGetDB( DB_SLAVE );
 		$options = array();
 
-		$ns = $this->request->getIntOrNull( 'namespace' );
-		if ( isset( $ns ) ) {
-			$options['namespace'] = $ns;
-			$this->setNamespace( $options['namespace'] );
-		} else {
-			$options['namespace'] = '';
-		}
+		$hidelinks = $this->opts->getValue( 'hidelinks' );
+		$hideredirs = $this->opts->getValue( 'hideredirs' );
+		$hidetrans = $this->opts->getValue( 'hidetrans' );
+		$hideimages = $target->getNamespace() != NS_IMAGE || $this->opts->getValue( 'hideimages' );
+
+		$fetchlinks = !$hidelinks || !$hideredirs;
 
 		// Make the query
 		$plConds = array(
@@ -90,6 +105,11 @@ class WhatLinksHerePage {
 			'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',
@@ -97,75 +117,90 @@ class WhatLinksHerePage {
 			'tl_title' => $target->getDBkey(),
 		);
 
-		if ( $this->namespace !== null ){
-			$plConds['page_namespace'] = (int)$this->namespace;
-			$tlConds['page_namespace'] = (int)$this->namespace;
+		$ilConds = array(
+			'page_id=il_from',
+			'il_to' => $target->getDBkey(),
+		);
+
+		$namespace = $this->opts->getValue( 'namespace' );
+		if ( is_int($namespace) ){
+			$plConds['page_namespace'] = $namespace;
+			$tlConds['page_namespace'] = $namespace;
 		}
 
 		if ( $from ) {
-			$offsetCond = "page_id >= $from";
-		} else {
-			$offsetCond = false;
+			$tlConds[] = "tl_from >= $from";
+			$plConds[] = "pl_from >= $from";
 		}
-		$options['ORDER BY'] = 'page_id';
 
 		// 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;
-		if ( $offsetCond ) {
-			$tlConds[] = $offsetCond;
-			$plConds[] = $offsetCond;
-		}
 		$fields = array( 'page_id', 'page_namespace', 'page_title', 'page_is_redirect' );
 
-		$plRes = $dbr->select( array( 'pagelinks', 'page' ), $fields,
-			$plConds, $fname, $options );
-		$tlRes = $dbr->select( array( 'templatelinks', 'page' ), $fields,
-			$tlConds, $fname, $options );
-		if ( !$dbr->numRows( $plRes ) && !$dbr->numRows( $tlRes ) ) {
-			if ( 0 == $level && !isset( $this->namespace ) ) {
-				// really no links to here
-				$wgOut->addWikiText( wfMsg( 'nolinkshere', $this->target->getPrefixedText() ) );
-			} elseif ( 0 == $level && isset( $this->namespace ) ) {
-				// no links from requested namespace to here
-				$options = array(); // reinitialize for a further namespace search
-				$options['namespace'] = $this->namespace;
-				$options['target'] = $this->target->getPrefixedText();
-				list( $options['limit'], $options['offset']) = wfCheckLimits();
-				$wgOut->addHTML( $this->whatlinkshereForm( $options ) );
-				$wgOut->addWikiText( wfMsg( 'nolinkshere-ns', $this->target->getPrefixedText() ) );
-			}
-			return;
+		if( $fetchlinks ) {
+			$options['ORDER BY'] = 'pl_from';
+			$plRes = $dbr->select( array( 'pagelinks', 'page' ), $fields,
+				$plConds, __METHOD__, $options );
 		}
 
-		$options = array();
-		list( $options['limit'], $options['offset']) = wfCheckLimits();
-		if ( ( $ns = $this->request->getVal( 'namespace', null ) ) !== null && $ns !== '' && ctype_digit($ns) ) {
-			$options['namespace'] = intval( $ns );
-			$this->setNamespace( $options['namespace'] );
-		} else {
-			$options['namespace'] = '';
-			$this->setNamespace( null );
+		if( !$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__, $options );
+		}
+
+		if( ( !$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';
+				$wgOut->addWikiMsg( $errMsg, $this->target->getPrefixedText() );
+				// Show filters only if there are links
+				if( $hidelinks || $hidetrans || $hideredirs || $hideimages )
+					$wgOut->addHTML( $this->getFilterPanel() );
+			}
+			return;
 		}
-		$options['offset'] = $this->request->getVal( 'offset' );
-		/* Offset must be an integral. */
-		if ( !strlen( $options['offset'] ) || !preg_match( '/^[0-9]+$/', $options['offset'] ) )
-		$options['offset'] = '';
-		$options['target'] = $this->target->getPrefixedDBkey();
 
 		// 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
-		while ( $row = $dbr->fetchObject( $plRes ) ) {
-			$row->is_template = 0;
-			$rows[$row->page_id] = $row;
+		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 );
 		}
-		$dbr->freeResult( $plRes );
-		while ( $row = $dbr->fetchObject( $tlRes ) ) {
-			$row->is_template = 1;
-			$rows[$row->page_id] = $row;
+		if( !$hideimages ) {
+			while ( $row = $dbr->fetchObject( $ilRes ) ) {
+				$row->is_template = 0;
+				$row->is_image = 1;
+				$rows[$row->page_id] = $row;
+			}
+			$dbr->freeResult( $ilRes );
 		}
-		$dbr->freeResult( $tlRes );
 
 		// Sort by key and then change the keys to 0-based indices
 		ksort( $rows );
@@ -187,120 +222,186 @@ class WhatLinksHerePage {
 		$prevId = $from;
 
 		if ( $level == 0 ) {
-			$wgOut->addHTML( $this->whatlinkshereForm( $options ) );
-			$wgOut->addWikiText( wfMsg( 'linkshere', $this->target->getPrefixedText() ) );
-		}
-		$isredir = wfMsg( 'isredirect' );
-		$istemplate = wfMsg( 'istemplate' );
+			$wgOut->addHTML( $this->whatlinkshereForm( ) );
+			$wgOut->addHTML( $this->getFilterPanel() );
+			$wgOut->addWikiMsg( 'linkshere', $this->target->getPrefixedText() );
 
-		if( $level == 0 ) {
-			$prevnext = $this->getPrevNext( $limit, $prevId, $nextId, $options['namespace'] );
+			$prevnext = $this->getPrevNext( $prevId, $nextId );
 			$wgOut->addHTML( $prevnext );
 		}
 
-		$wgOut->addHTML( '<ul>' );
+		$wgOut->addHTML( $this->listStart() );
 		foreach ( $rows as $row ) {
 			$nt = Title::makeTitle( $row->page_namespace, $row->page_title );
 
-			if ( $row->page_is_redirect ) {
-				$extra = 'redirect=no';
+			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 {
-				$extra = '';
+				$wgOut->addHTML( $this->listItem( $row, $nt ) );
 			}
+		}
 
-			$link = $this->skin->makeKnownLinkObj( $nt, '', $extra );
-			$wgOut->addHTML( '<li>'.$link );
+		$wgOut->addHTML( $this->listEnd() );
 
-			// Display properties (redirect or template)
-			$props = array();
-			if ( $row->page_is_redirect ) {
-				$props[] = $isredir;
-			}
-			if ( $row->is_template ) {
-				$props[] = $istemplate;
-			}
-			if ( count( $props ) ) {
-				// FIXME? Cultural assumption, hard-coded punctuation
-				$wgOut->addHTML( ' (' . implode( ', ', $props ) . ') ' );
-			}
+		if( $level == 0 ) {
+			$wgOut->addHTML( $prevnext );
+		}
+	}
+
+	protected function listStart() {
+		return Xml::openElement( 'ul' );
+	}
 
-			if ( $row->page_is_redirect ) {
-				if ( $level < 2 ) {
-					$this->showIndirectLinks( $level + 1, $nt, 500 );
-				}
+	protected function listItem( $row, $nt, $notClose = false ) {
+		# local message cache
+		static $msgcache = null;
+		if ( $msgcache === null ) {
+			static $msgs = array( 'isredirect', 'istemplate', 'semicolon-separator',
+				'whatlinkshere-links', 'isimage' );
+			$msgcache = array();
+			foreach ( $msgs as $msg ) {
+				$msgcache[$msg] = wfMsgHtml( $msg );
 			}
-			$wgOut->addHTML( "</li>\n" );
 		}
-		$wgOut->addHTML( "</ul>\n" );
 
-		if( $level == 0 ) {
-			$wgOut->addHTML( $prevnext );
+		$suppressRedirect = $row->page_is_redirect ? 'redirect=no' : '';
+		$link = $this->skin->makeKnownLinkObj( $nt, '', $suppressRedirect );
+
+		// Display properties (redirect or template)
+		$propsText = '';
+		$props = array();
+		if ( $row->page_is_redirect )
+			$props[] = $msgcache['isredirect'];
+		if ( $row->is_template )
+			$props[] = $msgcache['istemplate'];
+		if( $row->is_image )
+			$props[] = $msgcache['isimage'];
+
+		if ( count( $props ) ) {
+			$propsText = '(' . implode( $msgcache['semicolon-separator'], $props ) . ')';
 		}
+
+		# Space for utilities links, with a what-links-here link provided
+		$wlhLink = $this->wlhLink( $nt, $msgcache['whatlinkshere-links'] );
+		$wlh = Xml::wrapClass( "($wlhLink)", 'mw-whatlinkshere-tools' );
+
+		return $notClose ?
+			Xml::openElement( 'li' ) . "$link $propsText $wlh\n" :
+			Xml::tags( 'li', null, "$link $propsText $wlh" ) . "\n";
+	}
+
+	protected function listEnd() {
+		return Xml::closeElement( 'ul' );
+	}
+
+	protected function wlhLink( Title $target, $text ) {
+		static $title = null;
+		if ( $title === null )
+			$title = SpecialPage::getTitleFor( 'Whatlinkshere' );
+
+		$targetText = $target->getPrefixedUrl();
+		return $this->skin->makeKnownLinkObj( $title, $text, 'target=' . $targetText );
 	}
 
 	function makeSelfLink( $text, $query ) {
 		return $this->skin->makeKnownLinkObj( $this->selfTitle, $text, $query );
 	}
 
-	function getPrevNext( $limit, $prevId, $nextId, $namespace ) {
+	function getPrevNext( $prevId, $nextId ) {
 		global $wgLang;
-		$fmtLimit = $wgLang->formatNum( $limit );
+		$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 ) {
-			$prevLink = $this->makeSelfLink( $prev, "limit={$limit}&from={$this->back}&namespace={$namespace}" );
-		} else {
-			$prevLink = $prev;
+			$overrides = array( 'from' => $this->opts->getValue( 'back' ) );
+			$prev = $this->makeSelfLink( $prev, wfArrayToCGI( $overrides, $changed ) );
 		}
 		if ( 0 != $nextId ) {
-			$nextLink = $this->makeSelfLink( $next, "limit={$limit}&from={$nextId}&back={$prevId}&namespace={$namespace}" );
-		} else {
-			$nextLink = $next;
+			$overrides = array( 'from' => $nextId, 'back' => $prevId );
+			$next = $this->makeSelfLink( $next, wfArrayToCGI( $overrides, $changed ) );
 		}
-		$nums = $this->numLink( 20, $prevId ) . ' | ' .
-		  $this->numLink( 50, $prevId ) . ' | ' .
-		  $this->numLink( 100, $prevId ) . ' | ' .
-		  $this->numLink( 250, $prevId ) . ' | ' .
-		  $this->numLink( 500, $prevId );
 
-		return wfMsg( 'viewprevnext', $prevLink, $nextLink, $nums );
-	}
+		$limitLinks = array();
+		foreach ( $this->limits as $limit ) {
+			$prettyLimit = $wgLang->formatNum( $limit );
+			$overrides = array( 'limit' => $limit );
+			$limitLinks[] = $this->makeSelfLink( $prettyLimit, wfArrayToCGI( $overrides, $changed ) );
+		}
 
-	function numLink( $limit, $from ) {
-		global $wgLang;
-		$query = "limit={$limit}&from={$from}";
-		$fmtLimit = $wgLang->formatNum( $limit );
-		return $this->makeSelfLink( $fmtLimit, $query );
+		$nums = implode ( ' | ', $limitLinks );
+
+		return wfMsgHtml( 'viewprevnext', $prev, $next, $nums );
 	}
 
-	function whatlinkshereForm( $options ) {
+	function whatlinkshereForm() {
 		global $wgScript, $wgTitle;
 
-		$options['title'] = $wgTitle->getPrefixedText();
+		// 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' );
+
+		# Build up the form
+		$f = Xml::openElement( 'form', array( 'method' => 'get', 'action' => $wgScript ) );
+		
+		# Values that should not be forgotten
+		$f .= Xml::hidden( 'title', $wgTitle->getPrefixedText() );
+		foreach ( $this->opts->getUnconsumedValues() as $name => $value ) {
+			$f .= Xml::hidden( $name, $value );
+		}
 
-		$f = Xml::openElement( 'form', array( 'method' => 'get', 'action' => "$wgScript" ) ) .
-			'<fieldset>' .
-			Xml::element( 'legend', array(), wfMsg( 'whatlinkshere' ) );
+		$f .= Xml::openElement( 'fieldset' );
+		$f .= Xml::element( 'legend', null, wfMsg( 'whatlinkshere' ) );
 
-		foreach ( $options as $name => $value ) {
-			if( $name === 'namespace') continue;
-			$f .= "\t" . Xml::hidden( $name, $value ). "\n";
-		}
+		# Target input
+		$f .= Xml::inputLabel( wfMsg( 'whatlinkshere-page' ), 'target',
+				'mw-whatlinkshere-target', 40, $target );
+
+		$f .= ' ';
+
+		# Namespace selector
+		$f .= Xml::label( wfMsg( 'namespace' ), 'namespace' ) . '&nbsp;' .
+			Xml::namespaceSelector( $namespace, '' );
+
+		# Submit
+		$f .= Xml::submitButton( wfMsg( 'allpagessubmit' ) );
 
-		$f .= Xml::label( wfMsg( 'namespace' ), 'namespace' ) . ' ' .
-			Xml::namespaceSelector( $options['namespace'], '' ) .
-			Xml::submitButton( wfMsg( 'allpagessubmit' ) ) .
-			'</fieldset>' .
-			Xml::closeElement( 'form' ) . "\n";
+		# Close
+		$f .= Xml::closeElement( 'fieldset' ) . Xml::closeElement( 'form' ) . "\n";
 
 		return $f;
 	}
 
-	function setNamespace( $ns ) {
-		$this->namespace = $ns;
+	function getFilterPanel() {
+		$show = wfMsgHtml( 'show' );
+		$hide = wfMsgHtml( 'hide' );
+
+		$changed = $this->opts->getChangedValues();
+		unset($changed['target']); // Already in the request title
+
+		$links = array();
+		$types = array( 'hidetrans', 'hidelinks', 'hideredirs' );
+		if( $this->target->getNamespace() == NS_IMAGE )
+			$types[] = 'hideimages';
+		foreach( $types as $type ) {
+			$chosen = $this->opts->getValue( $type );
+			$msg = wfMsgHtml( "whatlinkshere-{$type}", $chosen ? $show : $hide );
+			$overrides = array( $type => !$chosen );
+			$links[] = $this->makeSelfLink( $msg, wfArrayToCGI( $overrides, $changed ) );
+		}
+		return Xml::tags( 'fieldset', null,
+			Xml::element( 'legend', null, wfMsg( 'whatlinkshere-filters' ) ) .
+			implode( '&nbsp;|&nbsp;', $links )
+		);
 	}
-
 }
-
-?>