Per Nikerabbit's comment on r100621:
[lhc/web/wiklou.git] / includes / specials / SpecialRecentchangeslinked.php
index 525afc3..000ef3e 100644 (file)
@@ -1,19 +1,43 @@
 <?php
+/**
+ * Implements Special:Recentchangeslinked
+ *
+ * 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
+ * @ingroup SpecialPage
+ */
 
 /**
  * This is to display changes made to all articles linked in an article.
+ *
  * @ingroup SpecialPage
  */
-class SpecialRecentchangeslinked extends SpecialRecentchanges {
+class SpecialRecentchangeslinked extends SpecialRecentChanges {
+       var $rclTargetTitle;
 
        function __construct(){
-               SpecialPage::SpecialPage( 'Recentchangeslinked' );      
+               parent::__construct( 'Recentchangeslinked' );
        }
 
        public function getDefaultOptions() {
                $opts = parent::getDefaultOptions();
                $opts->add( 'target', '' );
                $opts->add( 'showlinkedto', false );
+               $opts->add( 'tagfilter', '' );
                return $opts;
        }
 
@@ -21,25 +45,23 @@ class SpecialRecentchangeslinked extends SpecialRecentchanges {
                $opts['target'] = $par;
        }
 
-       public function feedSetup(){
-               global $wgRequest;
+       public function feedSetup() {
                $opts = parent::feedSetup();
-               $opts['target'] = $wgRequest->getVal( 'target' );
+               $opts['target'] = $this->getRequest()->getVal( 'target' );
                return $opts;
        }
 
        public function getFeedObject( $feedFormat ){
                $feed = new ChangesFeed( $feedFormat, false );
                $feedObj = $feed->getFeedObject(
-                       wfMsgForContent( 'recentchangeslinked-title', $this->mTargetTitle->getPrefixedText() ),
-                       wfMsgForContent( 'recentchangeslinked' )
+                       wfMsgForContent( 'recentchangeslinked-title', $this->getTargetTitle()->getPrefixedText() ),
+                       wfMsgForContent( 'recentchangeslinked-feed' ),
+                       $this->getTitle()->getFullUrl()
                );
                return array( $feed, $feedObj );
        }
 
        public function doMainQuery( $conds, $opts ) {
-               global $wgUser, $wgOut;
-
                $target = $opts['target'];
                $showlinkedto = $opts['showlinkedto'];
                $limit = $opts['limit'];
@@ -49,12 +71,11 @@ class SpecialRecentchangeslinked extends SpecialRecentchanges {
                }
                $title = Title::newFromURL( $target );
                if( !$title || $title->getInterwiki() != '' ){
-                       $wgOut->wrapWikiMsg( '<div class="errorbox">$1</div><br clear="both" />', 'allpagesbadtitle' );
+                       $this->getOutput()->wrapWikiMsg( "<div class=\"errorbox\">\n$1\n</div><br style=\"clear: both\" />", 'allpagesbadtitle' );
                        return false;
                }
-               $this->mTargetTitle = $title;
 
-               $wgOut->setPageTitle( wfMsg( 'recentchangeslinked-title', $title->getPrefixedText() ) );
+               $this->getOutput()->setPageTitle( $this->msg( 'recentchangeslinked-title', $title->getPrefixedText() ) );
 
                /*
                 * Ordinary links are in the pagelinks table, while transclusions are
@@ -73,16 +94,27 @@ class SpecialRecentchangeslinked extends SpecialRecentchanges {
                $tables = array( 'recentchanges' );
                $select = array( $dbr->tableName( 'recentchanges' ) . '.*' );
                $join_conds = array();
+               $query_options = array();
 
                // left join with watchlist table to highlight watched rows
-               if( $uid = $wgUser->getId() ) {
+               $uid = $this->getUser()->getId();
+               if( $uid ) {
                        $tables[] = 'watchlist';
                        $select[] = 'wl_user';
                        $join_conds['watchlist'] = array( 'LEFT JOIN', "wl_user={$uid} AND wl_title=rc_title AND wl_namespace=rc_namespace" );
                }
+               if ( $this->getUser()->isAllowed( 'rollback' ) ) {
+                       $tables[] = 'page';
+                       $join_conds['page'] = array('LEFT JOIN', 'rc_cur_id=page_id');
+                       $select[] = 'page_latest';
+               }
+               if ( !$this->including() ) { // bug 23293
+                       ChangeTags::modifyDisplayQuery( $tables, $select, $conds, $join_conds,
+                               $query_options, $opts['tagfilter'] );
+               }
 
-               // XXX: parent class does this, should we too?
-               // wfRunHooks('SpecialRecentChangesQuery', array( &$conds, &$tables, &$join_conds, $opts ) );
+               if ( !wfRunHooks( 'SpecialRecentChangesQuery', array( &$conds, &$tables, &$join_conds, $opts, &$query_options, &$select ) ) )
+                       return false;
 
                if( $ns == NS_CATEGORY && !$showlinkedto ) {
                        // special handling for categories
@@ -92,10 +124,13 @@ class SpecialRecentchangeslinked extends SpecialRecentchanges {
                } else {
                        // for now, always join on these tables; really should be configurable as in whatlinkshere
                        $link_tables = array( 'pagelinks', 'templatelinks' );
-                       // imagelinks only contains links to pages in NS_IMAGE
-                       if( $ns == NS_IMAGE || !$showlinkedto ) $link_tables[] = 'imagelinks';
+                       // imagelinks only contains links to pages in NS_FILE
+                       if( $ns == NS_FILE || !$showlinkedto ) $link_tables[] = 'imagelinks';
                }
 
+               if( $id == 0 && !$showlinkedto )
+                       return false; // nonexistent pages can't link to any pages
+
                // field name prefixes for all the various tables we might want to join with
                $prefix = array( 'pagelinks' => 'pl', 'templatelinks' => 'tl', 'categorylinks' => 'cl', 'imagelinks' => 'il' );
 
@@ -105,8 +140,8 @@ class SpecialRecentchangeslinked extends SpecialRecentchanges {
                        $pfx = $prefix[$link_table];
 
                        // imagelinks and categorylinks tables have no xx_namespace field, and have xx_to instead of xx_title
-                       if( $link_table == 'imagelinks' ) $link_ns = NS_IMAGE;
-                       else if( $link_table == 'categorylinks' ) $link_ns = NS_CATEGORY;
+                       if( $link_table == 'imagelinks' ) $link_ns = NS_FILE;
+                       elseif( $link_table == 'categorylinks' ) $link_ns = NS_CATEGORY;
                        else $link_ns = 0;
 
                        if( $showlinkedto ) {
@@ -129,18 +164,35 @@ class SpecialRecentchangeslinked extends SpecialRecentchanges {
                                }
                        }
 
-                       $subsql[] = $dbr->selectSQLText( array_merge( $tables, array( $link_table ) ), $select, $conds + $subconds,
-                                                        __METHOD__, array( 'ORDER BY' => 'rc_timestamp DESC', 'LIMIT' => $limit ),
-                                                        $join_conds + array( $link_table => array( 'INNER JOIN', $subjoin ) ) );
+                       if( $dbr->unionSupportsOrderAndLimit())
+                               $order = array( 'ORDER BY' => 'rc_timestamp DESC' );
+                       else
+                               $order = array();
+
+
+                       $query = $dbr->selectSQLText(
+                               array_merge( $tables, array( $link_table ) ),
+                               $select,
+                               $conds + $subconds,
+                               __METHOD__,
+                               $order + $query_options,
+                               $join_conds + array( $link_table => array( 'INNER JOIN', $subjoin ) )
+                       );
+
+                       if( $dbr->unionSupportsOrderAndLimit())
+                               $query = $dbr->limitResult( $query, $limit );
+
+                       $subsql[] = $query;
                }
 
                if( count($subsql) == 0 )
                        return false; // should never happen
-               if( count($subsql) == 1 )
+               if( count($subsql) == 1 && $dbr->unionSupportsOrderAndLimit() )
                        $sql = $subsql[0];
                else {
                        // need to resort and relimit after union
-                       $sql = "(" . implode( ") UNION (", $subsql ) . ") ORDER BY rc_timestamp DESC LIMIT {$limit}";
+                       $sql = $dbr->unionQueries($subsql, false).' ORDER BY rc_timestamp DESC';
+                       $sql = $dbr->limitResult($sql, $limit, false);
                }
 
                $res = $dbr->query( $sql, __METHOD__ );
@@ -150,32 +202,56 @@ class SpecialRecentchangeslinked extends SpecialRecentchanges {
 
                return $res;
        }
-       
+
        function getExtraOptions( $opts ){
-               $opts->consumeValues( array( 'showlinkedto', 'target' ) );
+               $opts->consumeValues( array( 'showlinkedto', 'target', 'tagfilter' ) );
                $extraOpts = array();
                $extraOpts['namespace'] = $this->namespaceFilterForm( $opts );
-               $extraOpts['target'] = array( wfMsg( 'recentchangeslinked-page' ),
+               $extraOpts['target'] = array( wfMsgHtml( 'recentchangeslinked-page' ),
                        Xml::input( 'target', 40, str_replace('_',' ',$opts['target']) ) .
                        Xml::check( 'showlinkedto', $opts['showlinkedto'], array('id' => 'showlinkedto') ) . ' ' .
                        Xml::label( wfMsg("recentchangeslinked-to"), 'showlinkedto' ) );
-               $extraOpts['submit'] = Xml::submitbutton( wfMsg('allpagessubmit') );
+               $tagFilter = ChangeTags::buildTagFilterSelector( $opts['tagfilter'] );
+               if ($tagFilter)
+                       $extraOpts['tagfilter'] = $tagFilter;
                return $extraOpts;
        }
 
-       function setTopText( &$out, $opts ) {
-               global $wgOut, $wgUser;
-               $skin = $wgUser->getSkin();
-               $wgOut->setSubtitle( wfMsg( 'recentchangeslinked-backlink', $skin->link( $this->mTargetTitle, $this->mTargetTitle->getPrefixedText(), array(), array( 'redirect' => 'no'  ) ) ) );
+       /**
+        * @return Title
+        */
+       function getTargetTitle() {
+               if ( $this->rclTargetTitle === null ) {
+                       $opts = $this->getOptions();
+                       if ( isset( $opts['target'] ) && $opts['target'] !== '' ) {
+                               $this->rclTargetTitle = Title::newFromText( $opts['target'] );
+                       } else {
+                               $this->rclTargetTitle = false;
+                       }
+               }
+               return $this->rclTargetTitle;
        }
 
-       function setBottomText( &$out, $opts ){
-               if( isset( $this->mTargetTitle ) && is_object( $this->mTargetTitle ) ){
-                       global $wgUser;
-                       $out->setFeedAppendQuery( "target=" . urlencode( $this->mTargetTitle->getPrefixedDBkey() ) );
+       function setTopText( FormOptions $opts ) {
+               $target = $this->getTargetTitle();
+               if( $target ) {
+                       $this->getOutput()->setSubtitle( wfMsg( 'recentchangeslinked-backlink', Linker::link( $target,
+                               $target->getPrefixedText(), array(), array( 'redirect' => 'no'  ) ) ) );
                }
-               if( isset( $this->mResultEmpty ) && $this->mResultEmpty ){
-                       $out->addWikiMsg( 'recentchangeslinked-noresult' );     
+       }
+
+       public function getFeedQuery() {
+               $target = $this->getTargetTitle();
+               if( $target ) {
+                       return "target=" . urlencode( $target->getPrefixedDBkey() );
+               } else {
+                       return false;
+               }
+       }
+
+       function setBottomText( FormOptions $opts ) {
+               if( isset( $this->mResultEmpty ) && $this->mResultEmpty ) {
+                       $this->getOutput()->addWikiMsg( 'recentchangeslinked-noresult' );
                }
        }
 }