includes/EditPage.php

   1 <?php
   2 /**
   3  * Contain the EditPage class
   4  * @package MediaWiki
   5  */
   6
   7 /**
   8  * Splitting edit page/HTML interface from Article...
   9  * The actual database and text munging is still in Article,
  10  * but it should get easier to call those from alternate
  11  * interfaces.
  12  *
  13  * @package MediaWiki
  14  */
  15
  16 class EditPage {
  17         var $mArticle;
  18         var $mTitle;
  19         var $mMetaData = '';
  20
  21         # Form values
  22         var $save = false, $preview = false;
  23         var $minoredit = false, $watchthis = false;
  24         var $textbox1 = '', $textbox2 = '', $summary = '';
  25         var $edittime = '', $section = '';
  26         var $oldid = 0;
  27
  28         /**
  29          * @todo document
  30          * @param $article
  31          */
  32         function EditPage( $article ) {
  33                 $this->mArticle =& $article;
  34                 global $wgTitle;
  35                 $this->mTitle =& $wgTitle;
  36         }
  37
  38         /**
  39          * This is the function that extracts metadata from the article body on the first view.
  40          * To turn the feature on, set $wgUseMetadataEdit = true ; in LocalSettings
  41          */
  42         function extractMetaDataFromArticle ()
  43         {
  44                 global $wgUseMetadataEdit , $wgLang ;
  45                 $this->mMetaData = "" ;
  46                 if ( !$wgUseMetadataEdit ) return ;
  47                 $s = "" ;
  48                 $t = $this->mArticle->getContent ( true ) ;
  49
  50                 # MISSING : <nowiki> filtering
  51
  52                 # Categories and language links
  53                 $t = explode ( "\n" , $t ) ;
  54                 $catlow = strtolower ( $wgLang->getNsText ( NS_CATEGORY ) ) ;
  55                 $cat = $ll = array() ;
  56                 foreach ( $t AS $key => $x )
  57                 {
  58                         $y = trim ( strtolower ( $x ) ) ;
  59                         while ( substr ( $y , 0 , 2 ) == "[[" )
  60                         {
  61                                 $y = explode ( "]]" , trim ( $x ) ) ;
  62                                 $first = array_shift ( $y ) ;
  63                                 $first = explode ( ":" , $first ) ;
  64                                 $ns = array_shift ( $first ) ;
  65                                 $ns = trim ( str_replace ( "[" , "" , $ns ) ) ;
  66                                 if ( strlen ( $ns ) == 2 OR strtolower ( $ns ) == $catlow )
  67                                 {
  68                                         $add = "[[" . $ns . ":" . implode ( ":" , $first ) . "]]" ;
  69                                         if ( strtolower ( $ns ) == $catlow ) $cat[] = $add ;
  70                                         else $ll[] = $add ;
  71                                         $x = implode ( "]]" , $y ) ;
  72                                         $t[$key] = $x ;
  73                                         $y = trim ( strtolower ( $x ) ) ;
  74                                 }
  75                         }
  76                 }
  77                 if ( count ( $cat ) ) $s .= implode ( " " , $cat ) . "\n" ;
  78                 if ( count ( $ll ) ) $s .= implode ( " " , $ll ) . "\n" ;
  79                 $t = implode ( "\n" , $t ) ;
  80
  81                 # Templates, but only some
  82                 $sat = array ( "meta-template" ) ; # stand-alone-templates; must be lowercase
  83                 $t = explode ( "{{" , $t ) ;
  84                 $tl = array () ;
  85                 foreach ( $t AS $key => $x )
  86                 {
  87                         $y = explode ( "}}" , $x , 2 ) ;
  88                         if ( count ( $y ) == 2 )
  89                         {
  90                                 $z = $y[0] ;
  91                                 $z = explode ( "|" , $z ) ;
  92                                 $tn = array_shift ( $z ) ;
  93                                 if ( in_array ( strtolower ( $tn ) , $sat ) )
  94                                 {
  95                                         $tl[] = "{{" . $y[0] . "}}" ;
  96                                         $t[$key] = $y[1] ;
  97                                         $y = explode ( "}}" , $y[1] , 2 ) ;
  98                                 }
  99                                 else $t[$key] = "{{" . $x ;
 100                         }
 101                         else if ( $key != 0 ) $t[$key] = "{{" . $x ;
 102                         else $t[$key] = $x ;
 103                 }
 104                 if ( count ( $tl ) ) $s .= implode ( " " , $tl ) ;
 105                 $t = implode ( "" , $t ) ;
 106
 107                 $t = str_replace ( "\n\n\n" , "\n" , $t ) ;
 108                 $this->mArticle->mContent = $t ;
 109                 $this->mMetaData = $s ;
 110         }
 111
 112         /**
 113          * This is the function that gets called for "action=edit".
 114          */
 115         function edit() {
 116                 global $wgOut, $wgUser, $wgWhitelistEdit, $wgRequest;
 117                 // this is not an article
 118                 $wgOut->setArticleFlag(false);
 119
 120                 $this->importFormData( $wgRequest );
 121
 122                 if( $this->live ) {
 123                         $this->livePreview();
 124                         return;
 125                 }
 126
 127                 if ( ! $this->mTitle->userCanEdit() ) {
 128                         $wgOut->readOnlyPage( $this->mArticle->getContent( true ), true );
 129                         return;
 130                 }
 131                 if ( $wgUser->isBlocked() ) {
 132                         $this->blockedIPpage();
 133                         return;
 134                 }
 135                 if ( !$wgUser->getID() && $wgWhitelistEdit ) {
 136                         $this->userNotLoggedInPage();
 137                         return;
 138                 }
 139                 if ( wfReadOnly() ) {
 140                         if( $this->save || $this->preview ) {
 141                                 $this->editForm( 'preview' );
 142                         } else {
 143                                 $wgOut->readOnlyPage( $this->mArticle->getContent( true ) );
 144                         }
 145                         return;
 146                 }
 147                 if ( $this->save ) {
 148                         $this->editForm( 'save' );
 149                 } else if ( $this->preview ) {
 150                         $this->editForm( 'preview' );
 151                 } else { # First time through
 152                         if( $wgUser->getOption('previewonfirst') ) {
 153                                 $this->editForm( 'preview', true );
 154                         } else {
 155                                 $this->extractMetaDataFromArticle () ;
 156                                 $this->editForm( 'initial', true );
 157                         }
 158                 }
 159         }
 160
 161         /**
 162          * @todo document
 163          */
 164         function importFormData( &$request ) {
 165                 # These fields need to be checked for encoding.
 166                 # Also remove trailing whitespace, but don't remove _initial_
 167                 # whitespace from the text boxes. This may be significant formatting.
 168                 $this->textbox1 = rtrim( $request->getText( 'wpTextbox1' ) );
 169                 $this->textbox2 = rtrim( $request->getText( 'wpTextbox2' ) );
 170                 $this->mMetaData = rtrim( $request->getText( 'metadata' ) );
 171                 $this->summary = trim( $request->getText( 'wpSummary' ) );
 172
 173                 $this->edittime = $request->getVal( 'wpEdittime' );
 174                 if( !preg_match( '/^\d{14}$/', $this->edittime )) $this->edittime = '';
 175
 176                 $this->preview = $request->getCheck( 'wpPreview' );
 177                 $this->save = $request->wasPosted() && !$this->preview;
 178                 $this->minoredit = $request->getCheck( 'wpMinoredit' );
 179                 $this->watchthis = $request->getCheck( 'wpWatchthis' );
 180
 181                 $this->oldid = $request->getInt( 'oldid' );
 182
 183                 # Section edit can come from either the form or a link
 184                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 185
 186                 $this->live = $request->getCheck( 'live' );
 187         }
 188
 189         /**
 190          * Since there is only one text field on the edit form,
 191          * pressing <enter> will cause the form to be submitted, but
 192          * the submit button value won't appear in the query, so we
 193          * Fake it here before going back to edit().  This is kind of
 194          * ugly, but it helps some old URLs to still work.
 195          */
 196         function submit() {
 197                 if( !$this->preview ) $this->save = true;
 198
 199                 $this->edit();
 200         }
 201
 202         /**
 203          * The edit form is self-submitting, so that when things like
 204          * preview and edit conflicts occur, we get the same form back
 205          * with the extra stuff added.  Only when the final submission
 206          * is made and all is well do we actually save and redirect to
 207          * the newly-edited page.
 208          *
 209          * @param string $formtype Type of form either : save, initial or preview
 210          * @param bool $firsttime True to load form data from db
 211          */
 212         function editForm( $formtype, $firsttime = false ) {
 213                 global $wgOut, $wgUser;
 214                 global $wgLang, $wgContLang, $wgParser, $wgTitle;
 215                 global $wgAllowAnonymousMinor;
 216                 global $wgWhitelistEdit;
 217                 global $wgSpamRegex, $wgFilterCallback;
 218                 global $wgUseLatin1;
 219
 220                 $sk = $wgUser->getSkin();
 221                 $isConflict = false;
 222                 // css / js subpages of user pages get a special treatment
 223                 $isCssJsSubpage = (Namespace::getUser() == $wgTitle->getNamespace() and preg_match("/\\.(css|js)$/", $wgTitle->getText() ));
 224
 225                 if(!$this->mTitle->getArticleID()) { # new article
 226                         $wgOut->addWikiText(wfmsg('newarticletext'));
 227                 }
 228
 229                 if( Namespace::isTalk( $this->mTitle->getNamespace() ) ) {
 230                         $wgOut->addWikiText(wfmsg('talkpagetext'));
 231                 }
 232
 233                 # Attempt submission here.  This will check for edit conflicts,
 234                 # and redundantly check for locked database, blocked IPs, etc.
 235                 # that edit() already checked just in case someone tries to sneak
 236                 # in the back door with a hand-edited submission URL.
 237
 238                 if ( 'save' == $formtype ) {
 239                         # Reintegrate metadata
 240                         if ( $this->mMetaData != "" ) $this->textbox1 .= "\n" . $this->mMetaData ;
 241                         $this->mMetaData = "" ;
 242
 243                         # Check for spam
 244                         if ( $wgSpamRegex && preg_match( $wgSpamRegex, $this->textbox1, $matches ) ) {
 245                                 $this->spamPage ( $matches[0] );
 246                                 return;
 247                         }
 248                         if ( $wgFilterCallback && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section ) ) {
 249                                 # Error messages or other handling should be performed by the filter function
 250                                 return;
 251                         }
 252                         if ( $wgUser->isBlocked() ) {
 253                                 $this->blockedIPpage();
 254                                 return;
 255                         }
 256                         if ( !$wgUser->getID() && $wgWhitelistEdit ) {
 257                                 $this->userNotLoggedInPage();
 258                                 return;
 259                         }
 260                         if ( wfReadOnly() ) {
 261                                 $wgOut->readOnlyPage();
 262                                 return;
 263                         }
 264
 265                         # If article is new, insert it.
 266                         $aid = $this->mTitle->getArticleID( GAID_FOR_UPDATE );
 267                         if ( 0 == $aid ) {
 268                                 # Don't save a new article if it's blank.
 269                                 if ( ( '' == $this->textbox1 ) ||
 270                                   ( wfMsg( 'newarticletext' ) == $this->textbox1 ) ) {
 271                                         $wgOut->redirect( $this->mTitle->getFullURL() );
 272                                         return;
 273                                 }
 274                                 if (wfRunHooks('ArticleSave', $this->mArticle, $wgUser, $this->textbox1,
 275                                                            $this->summary, $this->minoredit, $this->watchthis, NULL))
 276                                 {
 277                                         $this->mArticle->insertNewArticle( $this->textbox1, $this->summary,
 278                                                                                                            $this->minoredit, $this->watchthis );
 279                                         wfRunHooks('ArticleSaveComplete', $this->mArticle, $wgUser, $this->textbox1,
 280                                                            $this->summary, $this->minoredit, $this->watchthis, NULL);
 281                                 }
 282                                 return;
 283                         }
 284
 285                         # Article exists. Check for edit conflict.
 286
 287                         $this->mArticle->clear(); # Force reload of dates, etc.
 288                         $this->mArticle->forUpdate( true ); # Lock the article
 289
 290                         if( ( $this->section != 'new' ) &&
 291                                 ($this->mArticle->getTimestamp() != $this->edittime ) ) {
 292                                 $isConflict = true;
 293                         }
 294                         $userid = $wgUser->getID();
 295
 296                         if ( $isConflict) {
 297                                 $text = $this->mArticle->getTextOfLastEditWithSectionReplacedOrAdded(
 298                                         $this->section, $this->textbox1, $this->summary, $this->edittime);
 299                         }
 300                         else {
 301                                 $text = $this->mArticle->getTextOfLastEditWithSectionReplacedOrAdded(
 302                                         $this->section, $this->textbox1, $this->summary);
 303                         }
 304                         # Suppress edit conflict with self
 305
 306                         if ( ( 0 != $userid ) && ( $this->mArticle->getUser() == $userid ) ) {
 307                                 $isConflict = false;
 308                         } else {
 309                                 # switch from section editing to normal editing in edit conflict
 310                                 if($isConflict) {
 311                                         # Attempt merge
 312                                         if( $this->mergeChangesInto( $text ) ){
 313                                                 // Successful merge! Maybe we should tell the user the good news?
 314                                                 $isConflict = false;
 315                                         } else {
 316                                                 $this->section = '';
 317                                                 $this->textbox1 = $text;
 318                                         }
 319                                 }
 320                         }
 321                         if ( ! $isConflict ) {
 322                                 # All's well
 323                                 $sectionanchor = '';
 324                                 if( $this->section == 'new' ) {
 325                                         if( $this->summary != '' ) {
 326                                                 $sectionanchor = $this->sectionAnchor( $this->summary );
 327                                         }
 328                                 } elseif( $this->section != '' ) {
 329                                         # Try to get a section anchor from the section source, redirect to edited section if header found
 330                                         # XXX: might be better to integrate this into Article::getTextOfLastEditWithSectionReplacedOrAdded
 331                                         # for duplicate heading checking and maybe parsing
 332                                         $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
 333                                         # we can't deal with anchors, includes, html etc in the header for now,
 334                                         # headline would need to be parsed to improve this
 335                                         #if($hasmatch and strlen($matches[2]) > 0 and !preg_match( "/[\\['{<>]/", $matches[2])) {
 336                                         if($hasmatch and strlen($matches[2]) > 0) {
 337                                                 $sectionanchor = $this->sectionAnchor( $matches[2] );
 338                                         }
 339                                 }
 340
 341                                 if (wfRunHooks('ArticleSave', $this->mArticle, $wgUser, $text, $this->summary,
 342                                                            $this->minoredit, $this->watchthis, $sectionanchor))
 343                                 {
 344                                         # update the article here
 345                                         if($this->mArticle->updateArticle( $text, $this->summary, $this->minoredit,
 346                                                                                                            $this->watchthis, '', $sectionanchor ))
 347                                         {
 348                                                 wfRunHooks('ArticleSaveComplete', $this->mArticle, $wgUser, $text, $this->summary,
 349                                                                    $this->minoredit, $this->watchthis, $sectionanchor);
 350                                                 return;
 351                                         }
 352                                         else
 353                                           $isConflict = true;
 354                                 }
 355                         }
 356                 }
 357                 # First time through: get contents, set time for conflict
 358                 # checking, etc.
 359
 360                 if ( 'initial' == $formtype || $firsttime ) {
 361                         $this->edittime = $this->mArticle->getTimestamp();
 362                         $this->textbox1 = $this->mArticle->getContent( true );
 363                         $this->summary = '';
 364                         $this->proxyCheck();
 365                 }
 366                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 367
 368                 # Enabled article-related sidebar, toplinks, etc.
 369                 $wgOut->setArticleRelated( true );
 370
 371                 if ( $isConflict ) {
 372                         $s = wfMsg( 'editconflict', $this->mTitle->getPrefixedText() );
 373                         $wgOut->setPageTitle( $s );
 374                         $wgOut->addHTML( wfMsg( 'explainconflict' ) );
 375
 376                         $this->textbox2 = $this->textbox1;
 377                         $this->textbox1 = $this->mArticle->getContent( true );
 378                         $this->edittime = $this->mArticle->getTimestamp();
 379                 } else {
 380
 381                         if( $this->section != '' ) {
 382                                 if( $this->section == 'new' ) {
 383                                         $s = wfMsg('editingcomment', $this->mTitle->getPrefixedText() );
 384                                 } else {
 385                                         $s = wfMsg('editingsection', $this->mTitle->getPrefixedText() );
 386                                 }
 387                                 if(!$this->preview) {
 388                                         preg_match( "/^(=+)(.+)\\1/mi",
 389                                                 $this->textbox1,
 390                                                 $matches );
 391                                         if( !empty( $matches[2] ) ) {
 392                                                 $this->summary = "/* ". trim($matches[2])." */ ";
 393                                         }
 394                                 }
 395                         } else {
 396                                 $s = wfMsg( 'editing', $this->mTitle->getPrefixedText() );
 397                         }
 398                         $wgOut->setPageTitle( $s );
 399                         if ( !$wgUseLatin1 && !$this->checkUnicodeCompliantBrowser() ) {
 400                                 $this->mArticle->setOldSubtitle();
 401                                 $wgOut->addWikiText( wfMsg( 'nonunicodebrowser') );
 402                         }
 403                         if ( $this->oldid ) {
 404                                 $this->mArticle->setOldSubtitle();
 405                                 $wgOut->addHTML( wfMsg( 'editingold' ) );
 406                         }
 407                 }
 408
 409                 if( wfReadOnly() ) {
 410                         $wgOut->addHTML( '<strong>' .
 411                         wfMsg( 'readonlywarning' ) .
 412                         "</strong>" );
 413                 } else if ( $isCssJsSubpage and 'preview' != $formtype) {
 414                         $wgOut->addHTML( wfMsg( 'usercssjsyoucanpreview' ));
 415                 }
 416                 if( $this->mTitle->isProtected('edit') ) {
 417                         $wgOut->addHTML( '<strong>' . wfMsg( 'protectedpagewarning' ) .
 418                           "</strong><br />\n" );
 419                 }
 420
 421                 $kblength = (int)(strlen( $this->textbox1 ) / 1024);
 422                 if( $kblength > 29 ) {
 423                         $wgOut->addHTML( '<strong>' .
 424                                 wfMsg( 'longpagewarning', $wgLang->formatNum( $kblength ) )
 425                                 . '</strong>' );
 426                 }
 427
 428                 $rows = $wgUser->getOption( 'rows' );
 429                 $cols = $wgUser->getOption( 'cols' );
 430
 431                 $ew = $wgUser->getOption( 'editwidth' );
 432                 if ( $ew ) $ew = " style=\"width:100%\"";
 433                 else $ew = '';
 434
 435                 $q = 'action=submit';
 436                 #if ( "no" == $redirect ) { $q .= "&redirect=no"; }
 437                 $action = $this->mTitle->escapeLocalURL( $q );
 438
 439                 $summary = wfMsg('summary');
 440                 $subject = wfMsg('subject');
 441                 $minor   = wfMsg('minoredit');
 442                 $watchthis = wfMsg ('watchthis');
 443                 $save = wfMsg('savearticle');
 444                 $prev = wfMsg('showpreview');
 445
 446                 $cancel = $sk->makeKnownLink( $this->mTitle->getPrefixedText(),
 447                                 wfMsg('cancel') );
 448                 $edithelpurl = $sk->makeUrl( wfMsg( 'edithelppage' ));
 449                 $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
 450                         htmlspecialchars( wfMsg( 'edithelp' ) ).'</a> '.
 451                         htmlspecialchars( wfMsg( 'newwindow' ) );
 452
 453                 global $wgRightsText;
 454                 $copywarn = "<div id=\"editpage-copywarn\">\n" .
 455                         wfMsg( $wgRightsText ? 'copyrightwarning' : 'copyrightwarning2',
 456                                 '[[' . wfMsg( 'copyrightpage' ) . ']]',
 457                                 $wgRightsText ) . "\n</div>";
 458
 459                 if( $wgUser->getOption('showtoolbar') and !$isCssJsSubpage ) {
 460                         # prepare toolbar for edit buttons
 461                         $toolbar = $this->getEditToolbar();
 462                 } else {
 463                         $toolbar = '';
 464                 }
 465
 466                 // activate checkboxes if user wants them to be always active
 467                 if( !$this->preview ) {
 468                         if( $wgUser->getOption( 'watchdefault' ) ) $this->watchthis = true;
 469                         if( $wgUser->getOption( 'minordefault' ) ) $this->minoredit = true;
 470
 471                         // activate checkbox also if user is already watching the page,
 472                         // require wpWatchthis to be unset so that second condition is not
 473                         // checked unnecessarily
 474                         if( !$this->watchthis && $this->mTitle->userIsWatching() ) $this->watchthis = true;
 475                 }
 476
 477                 $minoredithtml = '';
 478
 479                 if ( 0 != $wgUser->getID() || $wgAllowAnonymousMinor ) {
 480                         $minoredithtml =
 481                                 "<input tabindex='3' type='checkbox' value='1' name='wpMinoredit'".($this->minoredit?" checked='checked'":"").
 482                                 " accesskey='".wfMsg('accesskey-minoredit')."' id='wpMinoredit' />".
 483                                 "<label for='wpMinoredit' title='".wfMsg('tooltip-minoredit')."'>{$minor}</label>";
 484                 }
 485
 486                 $watchhtml = '';
 487
 488                 if ( 0 != $wgUser->getID() ) {
 489                         $watchhtml = "<input tabindex='4' type='checkbox' name='wpWatchthis'".($this->watchthis?" checked='checked'":"").
 490                                 " accesskey='".wfMsg('accesskey-watch')."' id='wpWatchthis'  />".
 491                                 "<label for='wpWatchthis' title='".wfMsg('tooltip-watch')."'>{$watchthis}</label>";
 492                 }
 493
 494                 $checkboxhtml = $minoredithtml . $watchhtml . '<br />';
 495
 496                 $wgOut->addHTML( '<div id="wikiPreview">' );
 497                 if ( 'preview' == $formtype) {
 498                         $previewOutput = $this->getPreviewText( $isConflict, $isCssJsSubpage );
 499                         if( $wgUser->getOption('previewontop' ) ) {
 500                                 $wgOut->addHTML( $previewOutput );
 501                                 $wgOut->addHTML( "<br style=\"clear:both;\" />\n" );
 502                         }
 503                 }
 504                 $wgOut->addHTML( '</div>' );
 505
 506                 # if this is a comment, show a subject line at the top, which is also the edit summary.
 507                 # Otherwise, show a summary field at the bottom
 508                 $summarytext = htmlspecialchars( $wgContLang->recodeForEdit( $this->summary ) ); # FIXME
 509                         if( $this->section == 'new' ) {
 510                                 $commentsubject="{$subject}: <input tabindex='1' type='text' value=\"$summarytext\" name=\"wpSummary\" maxlength='200' size='60' /><br />";
 511                                 $editsummary = '';
 512                         } else {
 513                                 $commentsubject = '';
 514                                 $editsummary="{$summary}: <input tabindex='3' type='text' value=\"$summarytext\" name=\"wpSummary\" maxlength='200' size='60' /><br />";
 515                         }
 516
 517                 if( !$this->preview ) {
 518                 # Don't select the edit box on preview; this interferes with seeing what's going on.
 519                         $wgOut->setOnloadHandler( 'document.editform.wpTextbox1.focus()' );
 520                 }
 521                 # Prepare a list of templates used by this page
 522                 $db =& wfGetDB( DB_SLAVE );
 523                 $page = $db->tableName( 'page' );
 524                 $links = $db->tableName( 'links' );
 525                 $id = $this->mTitle->getArticleID();
 526                 $sql = "SELECT page_namespace,page_title,page_id ".
 527                         "FROM $page,$links WHERE l_to=page_id AND l_from={$id} and page_namespace=".NS_TEMPLATE;
 528                 $res = $db->query( $sql, "EditPage::editform" );
 529
 530                 if ( $db->numRows( $res ) ) {
 531                         $templates = '<br />'. wfMsg( 'templatesused' ) . '<ul>';
 532                         while ( $row = $db->fetchObject( $res ) ) {
 533                                 if ( $titleObj = Title::makeTitle( $row->page_namespace, $row->page_title ) ) {
 534                                         $templates .= '<li>' . $sk->makeLinkObj( $titleObj ) . '</li>';
 535                                 }
 536                         }
 537                         $templates .= '</ul>';
 538                 } else {
 539                         $templates = '';
 540                 }
 541
 542                 global $wgLivePreview, $wgStylePath;
 543                 /**
 544                  * Live Preview lets us fetch rendered preview page content and
 545                  * add it to the page without refreshing the whole page.
 546                  * Set up the button for it; if not supported by the browser
 547                  * it will fall through to the normal form submission method.
 548                  */
 549                 if( $wgLivePreview ) {
 550                         $wgOut->addHTML( '<script type="text/javascript" src="' .
 551                                 htmlspecialchars( $wgStylePath . '/common/preview.js' ) .
 552                                 '"></script>' . "\n" );
 553                         $liveAction = $wgTitle->getLocalUrl( 'action=submit&wpPreview=true&live=true' );
 554                         $liveOnclick = 'onclick="return !livePreview('.
 555                                 'getElementById(\'wikiPreview\'),' .
 556                                 'editform.wpTextbox1.value,' .
 557                                 htmlspecialchars( '"' . $liveAction . '"' ) . ')"';
 558                 } else {
 559                         $liveOnclick = '';
 560                 }
 561
 562                 global $wgUseMetadataEdit ;
 563                 if ( $wgUseMetadataEdit )
 564                 {
 565                         $metadata = $this->mMetaData ;
 566                         $metadata = htmlspecialchars( $wgContLang->recodeForEdit( $metadata ) ) ;
 567                         $metadata = "<textarea name='metadata' rows='3' cols='{$cols}'{$ew}>{$metadata}</textarea>" ;
 568                 }
 569                 else $metadata = "" ;
 570
 571
 572                 $wgOut->addHTML( <<<END
 573 {$toolbar}
 574 <form id="editform" name="editform" method="post" action="$action"
 575 enctype="multipart/form-data">
 576 {$commentsubject}
 577 {$mbegin}
 578 <textarea tabindex='1' accesskey="," name="wpTextbox1" rows='{$rows}'
 579 cols='{$cols}'{$ew}>
 580 END
 581 . htmlspecialchars( $wgContLang->recodeForEdit( $this->textbox1 ) ) .
 582 "
 583 </textarea>
 584 {$metadata}
 585 <br />{$editsummary}
 586 {$checkboxhtml}
 587 <input tabindex='5' id='wpSave' type='submit' value=\"{$save}\" name=\"wpSave\" accesskey=\"".wfMsg('accesskey-save')."\"".
 588 " title=\"".wfMsg('tooltip-save')."\"/>
 589 <input tabindex='6' id='wpPreview' type='submit' $liveOnclick value=\"{$prev}\" name=\"wpPreview\" accesskey=\"".wfMsg('accesskey-preview')."\"".
 590 " title=\"".wfMsg('tooltip-preview')."\"/>
 591 <em>{$cancel}</em> | <em>{$edithelp}</em>{$templates}" );
 592                 $wgOut->addWikiText( $copywarn );
 593                 $wgOut->addHTML( "
 594 <input type='hidden' value=\"" . htmlspecialchars( $this->section ) . "\" name=\"wpSection\" />
 595 <input type='hidden' value=\"{$this->edittime}\" name=\"wpEdittime\" />\n" );
 596
 597                 if ( $isConflict ) {
 598                         require_once( "DifferenceEngine.php" );
 599                         $wgOut->addHTML( "<h2>" . wfMsg( "yourdiff" ) . "</h2>\n" );
 600                         DifferenceEngine::showDiff( $this->textbox2, $this->textbox1,
 601                           wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
 602
 603                         $wgOut->addHTML( "<h2>" . wfMsg( "yourtext" ) . "</h2>
 604 <textarea tabindex=6 id='wpTextbox2' name=\"wpTextbox2\" rows='{$rows}' cols='{$cols}' wrap='virtual'>"
 605 . htmlspecialchars( $wgContLang->recodeForEdit( $this->textbox2 ) ) .
 606 "
 607 </textarea>" );
 608                 }
 609                 $wgOut->addHTML( "</form>\n" );
 610                 if($formtype =="preview" && !$wgUser->getOption("previewontop")) {
 611                         $wgOut->addHTML('<div id="wikiPreview">' . $previewOutput . '</div>');
 612                 }
 613         }
 614
 615         function getPreviewText( $isConflict, $isCssJsSubpage ) {
 616                 global $wgOut, $wgUser, $wgTitle, $wgParser;
 617                 $previewhead='<h2>' . wfMsg( 'preview' ) . "</h2>\n<p><center><font color=\"#cc0000\">" .
 618                         wfMsg( 'note' ) . wfMsg( 'previewnote' ) . "</font></center></p>\n";
 619                 if ( $isConflict ) {
 620                         $previewhead.='<h2>' . wfMsg( 'previewconflict' ) .
 621                                 "</h2>\n";
 622                 }
 623
 624                 $parserOptions = ParserOptions::newFromUser( $wgUser );
 625                 $parserOptions->setEditSection( false );
 626                 $parserOptions->setEditSectionOnRightClick( false );
 627
 628                 # don't parse user css/js, show message about preview
 629                 # XXX: stupid php bug won't let us use $wgTitle->isCssJsSubpage() here
 630
 631                 if ( $isCssJsSubpage ) {
 632                         if(preg_match("/\\.css$/", $wgTitle->getText() ) ) {
 633                                 $previewtext = wfMsg('usercsspreview');
 634                         } else if(preg_match("/\\.js$/", $wgTitle->getText() ) ) {
 635                                 $previewtext = wfMsg('userjspreview');
 636                         }
 637                         $parserOutput = $wgParser->parse( $previewtext , $wgTitle, $parserOptions );
 638                         $wgOut->addHTML( $parserOutput->mText );
 639                 } else {
 640                         # if user want to see preview when he edit an article
 641                         if( $wgUser->getOption('previewonfirst') and ($this->textbox1 == '')) {
 642                                 $this->textbox1 = $this->mArticle->getContent(true);
 643                         }
 644
 645                         $toparse = $this->textbox1 ;
 646                         if ( $this->mMetaData != "" ) $toparse .= "\n" . $this->mMetaData ;
 647
 648                         $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $toparse ) ."\n\n",
 649                                         $wgTitle, $parserOptions );
 650
 651                         $previewHTML = $parserOutput->mText;
 652                         $wgOut->addCategoryLinks($parserOutput->getCategoryLinks());
 653                         $wgOut->addLanguageLinks($parserOutput->getLanguageLinks());
 654                 }
 655                 return $previewhead . $previewHTML;
 656         }
 657
 658         /**
 659          * @todo document
 660          */
 661         function blockedIPpage() {
 662                 global $wgOut, $wgUser, $wgContLang, $wgIP;
 663
 664                 $wgOut->setPageTitle( wfMsg( 'blockedtitle' ) );
 665                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 666                 $wgOut->setArticleRelated( false );
 667
 668                 $id = $wgUser->blockedBy();
 669                 $reason = $wgUser->blockedFor();
 670                 $ip = $wgIP;
 671
 672                 if ( is_numeric( $id ) ) {
 673                         $name = User::whoIs( $id );
 674                 } else {
 675                         $name = $id;
 676                 }
 677                 $link = '[[' . $wgContLang->getNsText( Namespace::getUser() ) .
 678                   ":{$name}|{$name}]]";
 679
 680                 $wgOut->addWikiText( wfMsg( 'blockedtext', $link, $reason, $ip, $name ) );
 681                 $wgOut->returnToMain( false );
 682         }
 683
 684         /**
 685          * @todo document
 686          */
 687         function userNotLoggedInPage() {
 688                 global $wgOut, $wgUser;
 689
 690                 $wgOut->setPageTitle( wfMsg( 'whitelistedittitle' ) );
 691                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 692                 $wgOut->setArticleRelated( false );
 693
 694                 $wgOut->addWikiText( wfMsg( 'whitelistedittext' ) );
 695                 $wgOut->returnToMain( false );
 696         }
 697
 698         /**
 699          * @todo document
 700          */
 701         function spamPage ( $match = false )
 702         {
 703                 global $wgOut;
 704                 $wgOut->setPageTitle( wfMsg( 'spamprotectiontitle' ) );
 705                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
 706                 $wgOut->setArticleRelated( false );
 707
 708                 $wgOut->addWikiText( wfMsg( 'spamprotectiontext' ) );
 709                 if ( $match ) {
 710                         $wgOut->addWikiText( wfMsg( 'spamprotectionmatch', "<nowiki>{$match}</nowiki>" ) );
 711                 }
 712                 $wgOut->returnToMain( false );
 713         }
 714
 715         /**
 716          * Forks processes to scan the originating IP for an open proxy server
 717          * MemCached can be used to skip IPs that have already been scanned
 718          */
 719         function proxyCheck() {
 720                 global $wgBlockOpenProxies, $wgProxyPorts, $wgProxyScriptPath;
 721                 global $wgIP, $wgUseMemCached, $wgMemc, $wgDBname, $wgProxyMemcExpiry;
 722
 723                 if ( !$wgBlockOpenProxies ) {
 724                         return;
 725                 }
 726
 727                 # Get MemCached key
 728                 $skip = false;
 729                 if ( $wgUseMemCached ) {
 730                         $mcKey = $wgDBname.':proxy:ip:'.$wgIP;
 731                         $mcValue = $wgMemc->get( $mcKey );
 732                         if ( $mcValue ) {
 733                                 $skip = true;
 734                         }
 735                 }
 736
 737                 # Fork the processes
 738                 if ( !$skip ) {
 739                         $title = Title::makeTitle( NS_SPECIAL, 'Blockme' );
 740                         $iphash = md5( $wgIP . $wgProxyKey );
 741                         $url = $title->getFullURL( 'ip='.$iphash );
 742
 743                         foreach ( $wgProxyPorts as $port ) {
 744                                 $params = implode( ' ', array(
 745                                                         escapeshellarg( $wgProxyScriptPath ),
 746                                                         escapeshellarg( $wgIP ),
 747                                                         escapeshellarg( $port ),
 748                                                         escapeshellarg( $url )
 749                                                         ));
 750                                 exec( "php $params &>/dev/null &" );
 751                         }
 752                         # Set MemCached key
 753                         if ( $wgUseMemCached ) {
 754                                 $wgMemc->set( $mcKey, 1, $wgProxyMemcExpiry );
 755                         }
 756                 }
 757         }
 758
 759         /**
 760          * @access private
 761          * @todo document
 762          */
 763         function mergeChangesInto( &$text ){
 764                 $yourtext = $this->mArticle->fetchRevisionText();
 765
 766                 $db =& wfGetDB( DB_SLAVE );
 767                 $oldText = $this->mArticle->fetchRevisionText(
 768                         $db->timestamp( $this->edittime ),
 769                         'rev_timestamp' );
 770
 771                 if(wfMerge($oldText, $text, $yourtext, $result)){
 772                         $text = $result;
 773                         return true;
 774                 } else {
 775                         return false;
 776                 }
 777         }
 778
 779
 780         function checkUnicodeCompliantBrowser() {
 781                 global $wgBrowserBlackList;
 782                 $currentbrowser = $_SERVER["HTTP_USER_AGENT"];
 783                 foreach ( $wgBrowserBlackList as $browser ) {
 784                         if ( preg_match($browser, $currentbrowser) ) {
 785                                 return false;
 786                         }
 787                 }
 788                 return true;
 789         }
 790
 791         /**
 792          * Format an anchor fragment as it would appear for a given section name
 793          * @param string $text
 794          * @return string
 795          * @access private
 796          */
 797         function sectionAnchor( $text ) {
 798                 global $wgInputEncoding;
 799                 $headline = do_html_entity_decode( $text, ENT_COMPAT, $wgInputEncoding );
 800                 # strip out HTML
 801                 $headline = preg_replace( '/<.*?' . '>/', '', $headline );
 802                 $headline = trim( $headline );
 803                 $sectionanchor = '#' . urlencode( str_replace( ' ', '_', $headline ) );
 804                 $replacearray = array(
 805                         '%3A' => ':',
 806                         '%' => '.'
 807                 );
 808                 return str_replace(
 809                         array_keys( $replacearray ),
 810                         array_values( $replacearray ),
 811                         $sectionanchor );
 812         }
 813
 814         /**
 815          * Shows a bulletin board style toolbar for common editing functions.
 816          * It can be disabled in the user preferences.
 817          * The necessary JavaScript code can be found in style/wikibits.js.
 818          */
 819         function getEditToolbar() {
 820                 global $wgStylePath, $wgLang, $wgMimeType;
 821
 822                 /**
 823                  * toolarray an array of arrays which each include the filename of
 824                  * the button image (without path), the opening tag, the closing tag,
 825                  * and optionally a sample text that is inserted between the two when no
 826                  * selection is highlighted.
 827                  * The tip text is shown when the user moves the mouse over the button.
 828                  *
 829                  * Already here are accesskeys (key), which are not used yet until someone
 830                  * can figure out a way to make them work in IE. However, we should make
 831                  * sure these keys are not defined on the edit page.
 832                  */
 833                 $toolarray=array(
 834                         array(  'image'=>'button_bold.png',
 835                                         'open'  =>      "\'\'\'",
 836                                         'close' =>      "\'\'\'",
 837                                         'sample'=>      wfMsg('bold_sample'),
 838                                         'tip'   =>      wfMsg('bold_tip'),
 839                                         'key'   =>      'B'
 840                                 ),
 841                         array(  'image'=>'button_italic.png',
 842                                         'open'  =>      "\'\'",
 843                                         'close' =>      "\'\'",
 844                                         'sample'=>      wfMsg('italic_sample'),
 845                                         'tip'   =>      wfMsg('italic_tip'),
 846                                         'key'   =>      'I'
 847                                 ),
 848                         array(  'image'=>'button_link.png',
 849                                         'open'  =>      '[[',
 850                                         'close' =>      ']]',
 851                                         'sample'=>      wfMsg('link_sample'),
 852                                         'tip'   =>      wfMsg('link_tip'),
 853                                         'key'   =>      'L'
 854                                 ),
 855                         array(  'image'=>'button_extlink.png',
 856                                         'open'  =>      '[',
 857                                         'close' =>      ']',
 858                                         'sample'=>      wfMsg('extlink_sample'),
 859                                         'tip'   =>      wfMsg('extlink_tip'),
 860                                         'key'   =>      'X'
 861                                 ),
 862                         array(  'image'=>'button_headline.png',
 863                                         'open'  =>      "\\n== ",
 864                                         'close' =>      " ==\\n",
 865                                         'sample'=>      wfMsg('headline_sample'),
 866                                         'tip'   =>      wfMsg('headline_tip'),
 867                                         'key'   =>      'H'
 868                                 ),
 869                         array(  'image'=>'button_image.png',
 870                                         'open'  =>      '[['.$wgLang->getNsText(NS_IMAGE).":",
 871                                         'close' =>      ']]',
 872                                         'sample'=>      wfMsg('image_sample'),
 873                                         'tip'   =>      wfMsg('image_tip'),
 874                                         'key'   =>      'D'
 875                                 ),
 876                         array(  'image' =>      'button_media.png',
 877                                         'open'  =>      '[['.$wgLang->getNsText(NS_MEDIA).':',
 878                                         'close' =>      ']]',
 879                                         'sample'=>      wfMsg('media_sample'),
 880                                         'tip'   =>      wfMsg('media_tip'),
 881                                         'key'   =>      'M'
 882                                 ),
 883                         array(  'image' =>      'button_math.png',
 884                                         'open'  =>      "\\<math\\>",
 885                                         'close' =>      "\\</math\\>",
 886                                         'sample'=>      wfMsg('math_sample'),
 887                                         'tip'   =>      wfMsg('math_tip'),
 888                                         'key'   =>      'C'
 889                                 ),
 890                         array(  'image' =>      'button_nowiki.png',
 891                                         'open'  =>      "\\<nowiki\\>",
 892                                         'close' =>      "\\</nowiki\\>",
 893                                         'sample'=>      wfMsg('nowiki_sample'),
 894                                         'tip'   =>      wfMsg('nowiki_tip'),
 895                                         'key'   =>      'N'
 896                                 ),
 897                         array(  'image' =>      'button_sig.png',
 898                                         'open'  =>      '--~~~~',
 899                                         'close' =>      '',
 900                                         'sample'=>      '',
 901                                         'tip'   =>      wfMsg('sig_tip'),
 902                                         'key'   =>      'Y'
 903                                 ),
 904                         array(  'image' =>      'button_hr.png',
 905                                         'open'  =>      "\\n----\\n",
 906                                         'close' =>      '',
 907                                         'sample'=>      '',
 908                                         'tip'   =>      wfMsg('hr_tip'),
 909                                         'key'   =>      'R'
 910                                 )
 911                 );
 912                 $toolbar ="<script type='text/javascript'>\n/*<![CDATA[*/\n";
 913
 914                 $toolbar.="document.writeln(\"<div id='toolbar'>\");\n";
 915                 foreach($toolarray as $tool) {
 916
 917                         $image=$wgStylePath.'/common/images/'.$tool['image'];
 918                         $open=$tool['open'];
 919                         $close=$tool['close'];
 920                         $sample = addslashes( $tool['sample'] );
 921
 922                         // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
 923                         // Older browsers show a "speedtip" type message only for ALT.
 924                         // Ideally these should be different, realistically they
 925                         // probably don't need to be.
 926                         $tip = addslashes( $tool['tip'] );
 927
 928                         #$key = $tool["key"];
 929
 930                         $toolbar.="addButton('$image','$tip','$open','$close','$sample');\n";
 931                 }
 932
 933                 $toolbar.="addInfobox('" . addslashes( wfMsg( "infobox" ) ) . "','" . addslashes(wfMsg("infobox_alert")) . "');\n";
 934                 $toolbar.="document.writeln(\"</div>\");\n";
 935
 936                 $toolbar.="/*]]>*/\n</script>";
 937                 return $toolbar;
 938         }
 939
 940         /**
 941          * Output preview text only. This can be sucked into the edit page
 942          * via JavaScript, and saves the server time rendering the skin as
 943          * well as theoretically being more robust on the client (doesn't
 944          * disturb the edit box's undo history, won't eat your text on
 945          * failure, etc).
 946          *
 947          * @todo This doesn't include category or interlanguage links.
 948          *       Would need to enhance it a bit, maybe wrap them in XML
 949          *       or something... that might also require more skin
 950          *       initialization, so check whether that's a problem.
 951          */
 952         function livePreview() {
 953                 global $wgOut;
 954                 $wgOut->disable();
 955                 header( 'Content-type: text/xml' );
 956                 header( 'Cache-control: no-cache' );
 957                 # FIXME
 958                 echo $this->getPreviewText( false, false );
 959         }
 960
 961 }
 962
 963 ?>