--- /dev/null
+<?php
+
+/**
+ * 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' );
+ $this->includable( false );
+ }
+
+ protected function setup( $par ) {
+ global $wgRequest, $wgUser, $wgEnableNewpagesUserFilter;
+
+ // Options
+ $opts = new FormOptions();
+ $this->opts = $opts; // bind
+ $opts->add( 'page1', '' );
+ $opts->add( 'page2', '' );
+ $opts->add( 'rev1', '' );
+ $opts->add( 'rev2', '' );
+ $opts->add( 'action', '' );
+ $opts->add( 'diffonly', '' );
+
+ // 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()->getPrefixedDBkey() );
+ }
+ 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()->getPrefixedDBkey() );
+ }
+
+ // Store some objects
+ $this->skin = $wgUser->getSkin();
+ }
+
+ /**
+ * Show a form for filtering namespace and username
+ *
+ * @param $par String
+ * @return String
+ */
+ public function execute( $par ) {
+ global $wgLang, $wgOut;
+
+ $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" ? true : false ),
+ false );
+ $de->showDiffPage( (bool)$this->opts->getValue( 'diffonly' ) );
+ }
+ }
+
+ 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[] = Xml::hidden( $key, $value );
+ }
+ $hidden = implode( "\n", $hidden );
+
+ $form = Xml::openElement( 'form', array( 'action' => $wgScript ) ) .
+ Xml::hidden( 'title', $this->getTitle()->getPrefixedDBkey() ) .
+ Xml::fieldset( wfMsg( 'compare-selector') ) .
+ Xml::openElement( 'table', array( 'id' => 'mw-diff-table', 'width' => '100%' ) ) .
+ "<tr>
+ <td class='mw-label' width='10%'>" .
+ Xml::label( wfMsg( 'compare-page1' ), 'page1' ) .
+ "</td>
+ <td class='mw-input' width='40%'>" .
+ Xml::input( 'page1', 40, $page1, array( 'type' => 'text' ) ) .
+ "</td>
+ <td class='mw-label' width='10%'>" .
+ Xml::label( wfMsg( 'compare-page2' ), 'page2' ) .
+ "</td>
+ <td class='mw-input' width='40%'>" .
+ Xml::input( 'page2', 40, $page2, array( 'type' => 'text' ) ) .
+ "</td>
+ </tr>" .
+ "<tr>
+ <td class='mw-label'>" .
+ Xml::label( wfMsg( 'compare-rev1' ), 'rev1' ) .
+ "</td>
+ <td class='mw-input'>" .
+ Xml::input( 'rev1', 8, $rev1, array( 'type' => 'text' ) ) .
+ "</td>
+ <td class='mw-label'>" .
+ Xml::label( wfMsg( 'compare-rev2' ), 'rev2' ) .
+ "</td>
+ <td class='mw-input'>" .
+ Xml::input( 'rev2', 8, $rev2, array( 'type' => 'text' ) ) .
+ "</td>
+ </tr>" .
+ "<tr> <td></td>
+ <td class='mw-submit' colspan='3'>" .
+ Xml::submitButton( wfMsg( 'compare-submit') ) .
+ "</td>
+ </tr>" .
+ Xml::closeElement( 'table' ) .
+ Xml::closeElement( 'fieldset' ) .
+ $hidden .
+ Xml::closeElement( 'form' );
+
+ $wgOut->addHTML( $form );
+ }
+}