includes/specials/SpecialComparePages.php

   1 <?php
   2 /**
   3  * Copyright (C) 2010 Derk-Jan Hartman <hartman@videolan.org>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  */
  20
  21 /**
  22  * implements Special:ComparePages
  23  * @ingroup SpecialPage
  24  */
  25 class SpecialComparePages extends SpecialPage {
  26
  27         // Stored objects
  28         protected $opts, $skin;
  29
  30         // Some internal settings
  31         protected $showNavigation = false;
  32
  33         public function __construct() {
  34                 parent::__construct( 'ComparePages' );
  35         }
  36
  37         protected function setup( $par ) {
  38                 global $wgRequest, $wgUser;
  39
  40                 // Options
  41                 $opts = new FormOptions();
  42                 $this->opts = $opts; // bind
  43                 $opts->add( 'page1', '' );
  44                 $opts->add( 'page2', '' );
  45                 $opts->add( 'rev1', '' );
  46                 $opts->add( 'rev2', '' );
  47                 $opts->add( 'action', '' );
  48                 $opts->add( 'diffonly', '' );
  49
  50                 // Set values
  51                 $opts->fetchValuesFromRequest( $wgRequest );
  52
  53                 $title1 = Title::newFromText( $opts->getValue( 'page1' ) );
  54                 $title2 = Title::newFromText( $opts->getValue( 'page2' ) );
  55
  56                 if( $title1 && $title1->exists() && $opts->getValue( 'rev1' ) == '' ) {
  57                         $pda = new Article( $title1 );
  58                         $pdi = $pda->getID();
  59                         $pdLastRevision = Revision::loadFromPageId( wfGetDB( DB_SLAVE ), $pdi );
  60                         $opts->setValue( 'rev1', $pdLastRevision->getId() );
  61                 } elseif ( $opts->getValue( 'rev1' ) != '' ) {
  62                         $pdrev = Revision::newFromId( $opts->getValue( 'rev1' ) );
  63                         if( $pdrev ) $opts->setValue( 'page1', $pdrev->getTitle()->getPrefixedText() );
  64                 }
  65                 if( $title2 && $title2->exists() && $opts->getValue( 'rev2' ) == '' ) {
  66                         $pda = new Article( $title2 );
  67                         $pdi = $pda->getID();
  68                         $pdLastRevision = Revision::loadFromPageId( wfGetDB( DB_SLAVE ), $pdi );
  69                         $opts->setValue('rev2', $pdLastRevision->getId() );
  70                 } elseif ( $opts->getValue( 'rev2' ) != '' ) {
  71                         $pdrev = Revision::newFromId( $opts->getValue( 'rev2' ) );
  72                         if( $pdrev ) $opts->setValue( 'page2', $pdrev->getTitle()->getPrefixedText() );
  73                 }
  74
  75                 // Store some objects
  76                 $this->skin = $wgUser->getSkin();
  77         }
  78
  79         /**
  80          * Show a form for filtering namespace and username
  81          *
  82          * @param $par String
  83          * @return String
  84          */
  85         public function execute( $par ) {
  86                 $this->setHeaders();
  87                 $this->outputHeader();
  88
  89                 $this->setup( $par );
  90
  91                 // Settings
  92                 $this->form();
  93
  94                 if( $this->opts->getValue( 'rev1' ) && $this->opts->getValue( 'rev2' ) ) {
  95                         $de = new DifferenceEngine( null,
  96                                 $this->opts->getValue( 'rev1' ),
  97                                 $this->opts->getValue( 'rev2' ),
  98                                 null, // rcid
  99                                 ($this->opts->getValue( 'action') == "purge" ? true : false ),
 100                                 false );
 101                         $de->showDiffPage( (bool)$this->opts->getValue( 'diffonly' ) );
 102                 }
 103         }
 104
 105         protected function form() {
 106                 global $wgOut, $wgScript;
 107
 108                 // Consume values
 109                 $page1 = $this->opts->consumeValue( 'page1' );
 110                 $page2 = $this->opts->consumeValue( 'page2' );
 111                 $rev1 = $this->opts->consumeValue( 'rev1' );
 112                 $rev2 = $this->opts->consumeValue( 'rev2' );
 113
 114                 // Store query values in hidden fields so that form submission doesn't lose them
 115                 $hidden = array();
 116                 foreach ( $this->opts->getUnconsumedValues() as $key => $value ) {
 117                         $hidden[] = Xml::hidden( $key, $value );
 118                 }
 119                 $hidden = implode( "\n", $hidden );
 120
 121                 $form = Html::openElement( 'form', array( 'action' => $wgScript ) ) .
 122                         Html::hidden( 'title', $this->getTitle()->getPrefixedDBkey() ) .
 123                         Xml::fieldset( wfMsg( 'compare-selector' ) ) .
 124                         Html::openElement( 'table', array( 'id' => 'mw-diff-table', 'style' => 'width:100%' ) ) .
 125                         "<tr>
 126                                 <td class='mw-label' style='width:10%'>" .
 127                                         Html::element( 'label', array( 'for' => 'page1' ), wfMsg( 'compare-page1' ) ) .
 128                                 "</td>
 129                                 <td class='mw-input' style='width:40%'>" .
 130                                         Html::input( 'page1', $page1, 'text', array( 'size' => 40, 'id' => 'page1' ) ) .
 131                                 "</td>
 132                                 <td class='mw-label' style='width:10%'>" .
 133                                         Html::element( 'label', array( 'for' => 'page2' ), wfMsg( 'compare-page2' ) ) .
 134                                 "</td>
 135                                 <td class='mw-input' style='width:40%'>" .
 136                                         Html::input( 'page2', $page2, 'text', array( 'size' => 40, 'id' => 'page2' ) ) .
 137                                 "</td>
 138                         </tr>" .
 139                         "<tr>
 140                                 <td class='mw-label'>" .
 141                                         Html::element( 'label', array( 'for' => 'rev1' ), wfMsg( 'compare-rev1' ) ) .
 142                                 "</td>
 143                                 <td class='mw-input'>" .
 144                                         Html::input( 'rev1', $rev1, 'text', array( 'size' => 8, 'id' => 'rev1' ) ) .
 145                                 "</td>
 146                                 <td class='mw-label'>" .
 147                                         Html::element( 'label', array( 'for' => 'rev2' ), wfMsg( 'compare-rev2' ) ) .
 148                                 "</td>
 149                                 <td class='mw-input'>" .
 150                                         Html::input( 'rev2', $rev2, 'text', array( 'size' => 8, 'id' => 'rev2' ) ) .
 151                                 "</td>
 152                         </tr>" .
 153                         "<tr> <td></td>
 154                                 <td class='mw-submit' colspan='3'>" .
 155                                         Xml::submitButton( wfMsg( 'compare-submit' ) ) .
 156                                 "</td>
 157                         </tr>" .
 158                         Html::closeElement( 'table' ) .
 159                         Html::closeElement( 'fieldset' ) .
 160                         $hidden .
 161                         Html::closeElement( 'form' );
 162
 163                 $wgOut->addHTML( $form );
 164         }
 165 }