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         protected function getDescription() {
  33                 return '';
  34         }
  35
  36         public function requiresWrite() {
  37                 return false;
  38         }
  39
  40         public function requiresUnblock() {
  41                 return false;
  42         }
  43
  44         protected function getPageTitle() {
  45                 return $this->msg( 'pageinfo-title', $this->getTitle()->getSubjectPage()->getPrefixedText() )->text();
  46         }
  47
  48         public function onView() {
  49                 global $wgDisableCounters;
  50
  51                 $title = $this->getTitle()->getSubjectPage();
  52
  53                 $pageInfo = self::pageCountInfo( $title );
  54                 $talkInfo = self::pageCountInfo( $title->getTalkPage() );
  55
  56                 return Html::rawElement( 'table', array( 'class' => 'wikitable mw-page-info' ),
  57                         Html::rawElement( 'tr', array(),
  58                                 Html::element( 'th', array(), '' ) .
  59                                 Html::element( 'th', array(), $this->msg( 'pageinfo-subjectpage' )->text() ) .
  60                                 Html::element( 'th', array(), $this->msg( 'pageinfo-talkpage' )->text() )
  61                         ) .
  62                         Html::rawElement( 'tr', array(),
  63                                 Html::element( 'th', array( 'colspan' => 3 ), $this->msg( 'pageinfo-header-edits' )->text() )
  64                         ) .
  65                         Html::rawElement( 'tr', array(),
  66                                 Html::element( 'td', array(), $this->msg( 'pageinfo-edits' )->text() ) .
  67                                 Html::element( 'td', array(), $this->getLanguage()->formatNum( $pageInfo['edits'] ) ) .
  68                                 Html::element( 'td', array(), $this->getLanguage()->formatNum( $talkInfo['edits'] ) )
  69                         ) .
  70                         Html::rawElement( 'tr', array(),
  71                                 Html::element( 'td', array(), $this->msg( 'pageinfo-authors' )->text() ) .
  72                                 Html::element( 'td', array(), $this->getLanguage()->formatNum( $pageInfo['authors'] ) ) .
  73                                 Html::element( 'td', array(), $this->getLanguage()->formatNum( $talkInfo['authors'] ) )
  74                         ) .
  75                         ( !$this->getUser()->isAllowed( 'unwatchedpages' ) ? '' :
  76                                 Html::rawElement( 'tr', array(),
  77                                         Html::element( 'th', array( 'colspan' => 3 ), $this->msg( 'pageinfo-header-watchlist' )->text() )
  78                                 ) .
  79                                 Html::rawElement( 'tr', array(),
  80                                         Html::element( 'td', array(), $this->msg( 'pageinfo-watchers' )->text() ) .
  81                                         Html::element( 'td', array( 'colspan' => 2 ), $this->getLanguage()->formatNum( $pageInfo['watchers'] ) )
  82                                 )
  83                         ).
  84                         ( $wgDisableCounters ? '' :
  85                                 Html::rawElement( 'tr', array(),
  86                                         Html::element( 'th', array( 'colspan' => 3 ), $this->msg( 'pageinfo-header-views' )->text() )
  87                                 ) .
  88                                 Html::rawElement( 'tr', array(),
  89                                         Html::element( 'td', array(), $this->msg( 'pageinfo-views' )->text() ) .
  90                                         Html::element( 'td', array(), $this->getLanguage()->formatNum( $pageInfo['views'] ) ) .
  91                                         Html::element( 'td', array(), $this->getLanguage()->formatNum( $talkInfo['views'] ) )
  92                                 ) .
  93                                 Html::rawElement( 'tr', array(),
  94                                         Html::element( 'td', array(), $this->msg( 'pageinfo-viewsperedit' )->text() ) .
  95                                         Html::element( 'td', array(), $this->getLanguage()->formatNum( sprintf( '%.2f', $pageInfo['edits'] ? $pageInfo['views'] / $pageInfo['edits'] : 0 ) ) ) .
  96                                         Html::element( 'td', array(), $this->getLanguage()->formatNum( sprintf( '%.2f', $talkInfo['edits'] ? $talkInfo['views'] / $talkInfo['edits'] : 0 ) ) )
  97                                 )
  98                         )
  99                 );
 100         }
 101
 102         /**
 103          * Return the total number of edits and number of unique editors
 104          * on a given page. If page does not exist, returns false.
 105          *
 106          * @param $title Title object
 107          * @return mixed array or boolean false
 108          */
 109         public static function pageCountInfo( $title ) {
 110                 $id = $title->getArticleID();
 111                 $dbr = wfGetDB( DB_SLAVE );
 112
 113                 $watchers = (int)$dbr->selectField(
 114                         'watchlist',
 115                         'COUNT(*)',
 116                         array(
 117                                 'wl_title'     => $title->getDBkey(),
 118                                 'wl_namespace' => $title->getNamespace()
 119                         ),
 120                         __METHOD__
 121                 );
 122
 123                 $edits = (int)$dbr->selectField(
 124                         'revision',
 125                         'COUNT(rev_page)',
 126                         array( 'rev_page' => $id ),
 127                         __METHOD__
 128                 );
 129
 130                 $authors = (int)$dbr->selectField(
 131                         'revision',
 132                         'COUNT(DISTINCT rev_user_text)',
 133                         array( 'rev_page' => $id ),
 134                         __METHOD__
 135                 );
 136
 137                 $views = (int)$dbr->selectField(
 138                         'page',
 139                         'page_counter',
 140                         array( 'page_id' => $id ),
 141                         __METHOD__
 142                 );
 143
 144                 return array( 'watchers' => $watchers, 'edits' => $edits,
 145                         'authors' => $authors, 'views' => $views );
 146         }
 147 }