MediaWiki 1.17.0

[autoinstallsdev/mediawiki.git] / includes / specials / SpecialComparePages.php

diff --git a/includes/specials/SpecialComparePages.php b/includes/specials/SpecialComparePages.php
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+<?php
+/**
+ * Implements Special:ComparePages
+ *
+ * Copyright © 2010 Derk-Jan Hartman <hartman@videolan.org>
+ *
+ * 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
+ */
+
+/**
+ * Implements Special:ComparePages
+ *
+ * @ingroup SpecialPage
+ */
+class SpecialComparePages extends SpecialPage {
+
+       // Stored objects
+       protected $opts, $skin;
+
+       // Some internal settings
+       protected $showNavigation = false;
+
+       public function __construct() {
+               parent::__construct( 'ComparePages' );
+       }
+
+       protected function setup( $par ) {
+               global $wgRequest, $wgUser;
+
+               // Options
+               $opts = new FormOptions();
+               $this->opts = $opts; // bind
+               $opts->add( 'page1', '' );
+               $opts->add( 'page2', '' );
+               $opts->add( 'rev1', '' );
+               $opts->add( 'rev2', '' );
+               $opts->add( 'action', '' );
+
+               // Set values
+               $opts->fetchValuesFromRequest( $wgRequest );
+
+               $title1 = Title::newFromText( $opts->getValue( 'page1' ) );
+               $title2 = Title::newFromText( $opts->getValue( 'page2' ) );
+
+               if( $title1 && $title1->exists() && $opts->getValue( 'rev1' ) == '' ) {
+                       $pda = new Article( $title1 );
+                       $pdi = $pda->getID();
+                       $pdLastRevision = Revision::loadFromPageId( wfGetDB( DB_SLAVE ), $pdi );
+                       $opts->setValue( 'rev1', $pdLastRevision->getId() );
+               } elseif ( $opts->getValue( 'rev1' ) != '' ) {
+                       $pdrev = Revision::newFromId( $opts->getValue( 'rev1' ) );
+                       if( $pdrev ) $opts->setValue( 'page1', $pdrev->getTitle()->getPrefixedText() );
+               }
+               if( $title2 && $title2->exists() && $opts->getValue( 'rev2' ) == '' ) {
+                       $pda = new Article( $title2 );
+                       $pdi = $pda->getID();
+                       $pdLastRevision = Revision::loadFromPageId( wfGetDB( DB_SLAVE ), $pdi );
+                       $opts->setValue('rev2', $pdLastRevision->getId() );
+               } elseif ( $opts->getValue( 'rev2' ) != '' ) {
+                       $pdrev = Revision::newFromId( $opts->getValue( 'rev2' ) );
+                       if( $pdrev ) $opts->setValue( 'page2', $pdrev->getTitle()->getPrefixedText() );
+               }
+
+               // Store some objects
+               $this->skin = $wgUser->getSkin();
+       }
+
+       /**
+        * Show a form for filtering namespace and username
+        *
+        * @param $par String
+        * @return String
+        */
+       public function execute( $par ) {
+               $this->setHeaders();
+               $this->outputHeader();
+
+               $this->setup( $par );
+
+               // Settings
+               $this->form();
+
+               if( $this->opts->getValue( 'rev1' ) && $this->opts->getValue( 'rev2' ) ) {
+                       $de = new DifferenceEngine( null,
+                               $this->opts->getValue( 'rev1' ),
+                               $this->opts->getValue( 'rev2' ),
+                               null, // rcid
+                               ( $this->opts->getValue( 'action' ) == 'purge' ),
+                               false );
+                       $de->showDiffPage( true );
+               }
+       }
+
+       protected function form() {
+               global $wgOut, $wgScript;
+
+               // Consume values
+               $page1 = $this->opts->consumeValue( 'page1' );
+               $page2 = $this->opts->consumeValue( 'page2' );
+               $rev1 = $this->opts->consumeValue( 'rev1' );
+               $rev2 = $this->opts->consumeValue( 'rev2' );
+
+               // Store query values in hidden fields so that form submission doesn't lose them
+               $hidden = array();
+               foreach ( $this->opts->getUnconsumedValues() as $key => $value ) {
+                       $hidden[] = Html::hidden( $key, $value );
+               }
+               $hidden = implode( "\n", $hidden );
+
+               $form = Html::openElement( 'form', array( 'action' => $wgScript ) ) .
+                       Html::hidden( 'title', $this->getTitle()->getPrefixedDBkey() ) .
+                       Xml::fieldset( wfMsg( 'compare-selector' ) ) .
+                       Html::openElement( 'table', array( 'id' => 'mw-diff-table', 'style' => 'width:100%' ) ) .
+                       "<tr>
+                               <td class='mw-label' style='width:10%'>" .
+                                       Html::element( 'label', array( 'for' => 'page1' ), wfMsg( 'compare-page1' ) ) .
+                               "</td>
+                               <td class='mw-input' style='width:40%'>" .
+                                       Html::input( 'page1', $page1, 'text', array( 'size' => 40, 'id' => 'page1' ) ) .
+                               "</td>
+                               <td class='mw-label' style='width:10%'>" .
+                                       Html::element( 'label', array( 'for' => 'page2' ), wfMsg( 'compare-page2' ) ) .
+                               "</td>
+                               <td class='mw-input' style='width:40%'>" .
+                                       Html::input( 'page2', $page2, 'text', array( 'size' => 40, 'id' => 'page2' ) ) .
+                               "</td>
+                       </tr>" . 
+                       "<tr>
+                               <td class='mw-label'>" .
+                                       Html::element( 'label', array( 'for' => 'rev1' ), wfMsg( 'compare-rev1' ) ) .
+                               "</td>
+                               <td class='mw-input'>" .
+                                       Html::input( 'rev1', $rev1, 'text', array( 'size' => 8, 'id' => 'rev1' ) ) .
+                               "</td>
+                               <td class='mw-label'>" .
+                                       Html::element( 'label', array( 'for' => 'rev2' ), wfMsg( 'compare-rev2' ) ) .
+                               "</td>
+                               <td class='mw-input'>" .
+                                       Html::input( 'rev2', $rev2, 'text', array( 'size' => 8, 'id' => 'rev2' ) ) .
+                               "</td>
+                       </tr>" . 
+                       "<tr> <td></td>
+                               <td class='mw-submit' colspan='3'>" .
+                                       Xml::submitButton( wfMsg( 'compare-submit' ) ) .
+                               "</td>
+                       </tr>" .
+                       Html::closeElement( 'table' ) .
+                       Html::closeElement( 'fieldset' ) .
+                       $hidden .
+                       Html::closeElement( 'form' );
+
+               $wgOut->addHTML( $form );
+       }
+}