includes/actions/InfoAction.php

   1 <?php
   2 /**
   3  * Display informations about a page.
   4  * Very inefficient for the moment.
   5  *
   6  * Copyright © 2011 Alexandre Emsenhuber
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
  21  *
  22  * @file
  23  * @ingroup Actions
  24  */
  25
  26 class InfoAction extends FormlessAction {
  27
  28         public function getName() {
  29                 return 'info';
  30         }
  31
  32         public function getRestriction() {
  33                 return 'read';
  34         }
  35
  36         protected function getDescription() {
  37                 return '';
  38         }
  39
  40         public function requiresWrite() {
  41                 return false;
  42         }
  43
  44         public function requiresUnblock() {
  45                 return false;
  46         }
  47
  48         public function onView() {
  49                 global $wgDisableCounters;
  50
  51                 $title = $this->getTitle()->getSubjectPage();
  52
  53                 $this->getOutput()->setPagetitle( wfMsg( 'pageinfo-title', $title->getPrefixedText() ) );
  54
  55                 $pageInfo = self::pageCountInfo( $title );
  56                 $talkInfo = self::pageCountInfo( $title->getTalkPage() );
  57
  58                 return Html::rawElement( 'table', array( 'class' => 'wikitable mw-page-info' ),
  59                         Html::rawElement( 'tr', array(),
  60                                 Html::element( 'th', array(), '' ) .
  61                                 Html::element( 'th', array(), wfMsg( 'pageinfo-subjectpage' ) ) .
  62                                 Html::element( 'th', array(), wfMsg( 'pageinfo-talkpage' ) )
  63                         ) .
  64                         Html::rawElement( 'tr', array(),
  65                                 Html::element( 'th', array( 'colspan' => 3 ), wfMsg( 'pageinfo-header-edits' ) )
  66                         ) .
  67                         Html::rawElement( 'tr', array(),
  68                                 Html::element( 'td', array(), wfMsg( 'pageinfo-edits' ) ) .
  69                                 Html::element( 'td', array(), $this->getLang()->formatNum( $pageInfo['edits'] ) ) .
  70                                 Html::element( 'td', array(), $this->getLang()->formatNum( $talkInfo['edits'] ) )
  71                         ) .
  72                         Html::rawElement( 'tr', array(),
  73                                 Html::element( 'td', array(), wfMsg( 'pageinfo-authors' ) ) .
  74                                 Html::element( 'td', array(), $this->getLang()->formatNum( $pageInfo['authors'] ) ) .
  75                                 Html::element( 'td', array(), $this->getLang()->formatNum( $talkInfo['authors'] ) )
  76                         ) .
  77                         ( !$this->getUser()->isAllowed( 'unwatchedpages' ) ? '' :
  78                                 Html::rawElement( 'tr', array(),
  79                                         Html::element( 'th', array( 'colspan' => 3 ), wfMsg( 'pageinfo-header-watchlist' ) )
  80                                 ) .
  81                                 Html::rawElement( 'tr', array(),
  82                                         Html::element( 'td', array(), wfMsg( 'pageinfo-watchers' ) ) .
  83                                         Html::element( 'td', array( 'colspan' => 2 ), $this->getLang()->formatNum( $pageInfo['watchers'] ) )
  84                                 )
  85                         ).
  86                         ( $wgDisableCounters ? '' :
  87                                 Html::rawElement( 'tr', array(),
  88                                         Html::element( 'th', array( 'colspan' => 3 ), wfMsg( 'pageinfo-header-views' ) )
  89                                 ) .
  90                                 Html::rawElement( 'tr', array(),
  91                                         Html::element( 'td', array(), wfMsg( 'pageinfo-views' ) ) .
  92                                         Html::element( 'td', array(), $this->getLang()->formatNum( $pageInfo['views'] ) ) .
  93                                         Html::element( 'td', array(), $this->getLang()->formatNum( $talkInfo['views'] ) )
  94                                 ) .
  95                                 Html::rawElement( 'tr', array(),
  96                                         Html::element( 'td', array(), wfMsg( 'pageinfo-viewsperedit' ) ) .
  97                                         Html::element( 'td', array(), $this->getLang()->formatNum( sprintf( '%.2f', $pageInfo['edits'] ? $pageInfo['views'] / $pageInfo['edits'] : 0 ) ) ) .
  98                                         Html::element( 'td', array(), $this->getLang()->formatNum( sprintf( '%.2f', $talkInfo['edits'] ? $talkInfo['views'] / $talkInfo['edits'] : 0 ) ) )
  99                                 )
 100                         )
 101                 );
 102         }
 103
 104         /**
 105          * Return the total number of edits and number of unique editors
 106          * on a given page. If page does not exist, returns false.
 107          *
 108          * @param $title Title object
 109          * @return mixed array or boolean false
 110          */
 111         public static function pageCountInfo( $title ) {
 112                 $id = $title->getArticleId();
 113                 $dbr = wfGetDB( DB_SLAVE );
 114
 115                 $watchers = (int)$dbr->selectField(
 116                         'watchlist',
 117                         'COUNT(*)',
 118                         array(
 119                                 'wl_title'     => $title->getDBkey(),
 120                                 'wl_namespace' => $title->getNamespace()
 121                         ),
 122                         __METHOD__
 123                 );
 124
 125                 $edits = (int)$dbr->selectField(
 126                         'revision',
 127                         'COUNT(rev_page)',
 128                         array( 'rev_page' => $id ),
 129                         __METHOD__
 130                 );
 131
 132                 $authors = (int)$dbr->selectField(
 133                         'revision',
 134                         'COUNT(DISTINCT rev_user_text)',
 135                         array( 'rev_page' => $id ),
 136                         __METHOD__
 137                 );
 138
 139                 $views = (int)$dbr->selectField(
 140                         'page',
 141                         'page_counter',
 142                         array( 'page_id' => $id ),
 143                         __METHOD__
 144                 );
 145
 146                 return array( 'watchers' => $watchers, 'edits' => $edits,
 147                         'authors' => $authors, 'views' => $views );
 148         }
 149 }