includes/specials/SpecialComparePages.php

   1 <?php
   2 /**
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17  * http://www.gnu.org/copyleft/gpl.html
  18  */
  19
  20 /**
  21  * implements Special:ComparePages
  22  * @ingroup SpecialPage
  23  */
  24 class SpecialComparePages extends SpecialPage {
  25
  26         // Stored objects
  27         protected $opts, $skin;
  28
  29         // Some internal settings
  30         protected $showNavigation = false;
  31
  32         public function __construct() {
  33                 parent::__construct( 'ComparePages' );
  34                 $this->includable( false );
  35         }
  36
  37         protected function setup( $par ) {
  38                 global $wgRequest, $wgUser, $wgEnableNewpagesUserFilter;
  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()->getPrefixedDBkey() );
  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()->getPrefixedDBkey() );
  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                 global $wgLang, $wgOut;
  87
  88                 $this->setHeaders();
  89                 $this->outputHeader();
  90
  91                 $this->setup( $par );
  92
  93                 // Settings
  94                 $this->form();
  95
  96                 if( $this->opts->getValue( 'rev1' ) && $this->opts->getValue( 'rev2' ) ) {
  97                         $de = new DifferenceEngine( null,
  98                                 $this->opts->getValue( 'rev1' ),
  99                                 $this->opts->getValue( 'rev2' ),
 100                                 null, // rcid
 101                                 ($this->opts->getValue( 'action') == "purge" ? true : false ),
 102                                 false );
 103                         $de->showDiffPage( (bool)$this->opts->getValue( 'diffonly' ) );
 104                 }
 105         }
 106
 107         protected function form() {
 108                 global $wgOut, $wgScript;
 109
 110                 // Consume values
 111                 $page1 = $this->opts->consumeValue( 'page1' );
 112                 $page2 = $this->opts->consumeValue( 'page2' );
 113                 $rev1 = $this->opts->consumeValue( 'rev1' );
 114                 $rev2 = $this->opts->consumeValue( 'rev2' );
 115
 116                 // Store query values in hidden fields so that form submission doesn't lose them
 117                 $hidden = array();
 118                 foreach ( $this->opts->getUnconsumedValues() as $key => $value ) {
 119                         $hidden[] = Xml::hidden( $key, $value );
 120                 }
 121                 $hidden = implode( "\n", $hidden );
 122
 123                 $form = Xml::openElement( 'form', array( 'action' => $wgScript ) ) .
 124                         Xml::hidden( 'title', $this->getTitle()->getPrefixedDBkey() ) .
 125                         Xml::fieldset( wfMsg( 'compare-selector') ) .
 126                         Xml::openElement( 'table', array( 'id' => 'mw-diff-table', 'width' => '100%' ) ) .
 127                         "<tr>
 128                                 <td class='mw-label' width='10%'>" .
 129                                         Xml::label( wfMsg( 'compare-page1' ), 'page1' ) .
 130                                 "</td>
 131                                 <td class='mw-input' width='40%'>" .
 132                                         Xml::input( 'page1', 40, $page1, array( 'type' => 'text' ) ) .
 133                                 "</td>
 134                                 <td class='mw-label' width='10%'>" .
 135                                         Xml::label( wfMsg( 'compare-page2' ), 'page2' ) .
 136                                 "</td>
 137                                 <td class='mw-input' width='40%'>" .
 138                                         Xml::input( 'page2', 40, $page2, array( 'type' => 'text' ) ) .
 139                                 "</td>
 140                         </tr>" .
 141                         "<tr>
 142                                 <td class='mw-label'>" .
 143                                         Xml::label( wfMsg( 'compare-rev1' ), 'rev1' ) .
 144                                 "</td>
 145                                 <td class='mw-input'>" .
 146                                         Xml::input( 'rev1', 8, $rev1, array( 'type' => 'text' ) ) .
 147                                 "</td>
 148                                 <td class='mw-label'>" .
 149                                         Xml::label( wfMsg( 'compare-rev2' ), 'rev2' ) .
 150                                 "</td>
 151                                 <td class='mw-input'>" .
 152                                         Xml::input( 'rev2', 8, $rev2, array( 'type' => 'text' ) ) .
 153                                 "</td>
 154                         </tr>" .
 155                         "<tr> <td></td>
 156                                 <td class='mw-submit' colspan='3'>" .
 157                                         Xml::submitButton( wfMsg( 'compare-submit') ) .
 158                                 "</td>
 159                         </tr>" .
 160                         Xml::closeElement( 'table' ) .
 161                         Xml::closeElement( 'fieldset' ) .
 162                         $hidden .
 163                         Xml::closeElement( 'form' );
 164
 165                 $wgOut->addHTML( $form );
 166         }
 167 }