includes/EditPage.php

   1 <?php
   2 /**
   3  * Contains the EditPage class
   4  * @file
   5  */
   6
   7 /**
   8  * The edit page/HTML interface (split 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  * EditPage cares about two distinct titles:
  14  * $wgTitle is the page that forms submit to, links point to,
  15  * redirects go to, etc. $this->mTitle (as well as $mArticle) is the
  16  * page in the database that is actually being edited. These are
  17  * usually the same, but they are now allowed to be different.
  18  */
  19 class EditPage {
  20         const AS_SUCCESS_UPDATE                 = 200;
  21         const AS_SUCCESS_NEW_ARTICLE            = 201;
  22         const AS_HOOK_ERROR                     = 210;
  23         const AS_FILTERING                      = 211;
  24         const AS_HOOK_ERROR_EXPECTED            = 212;
  25         const AS_BLOCKED_PAGE_FOR_USER          = 215;
  26         const AS_CONTENT_TOO_BIG                = 216;
  27         const AS_USER_CANNOT_EDIT               = 217;
  28         const AS_READ_ONLY_PAGE_ANON            = 218;
  29         const AS_READ_ONLY_PAGE_LOGGED          = 219;
  30         const AS_READ_ONLY_PAGE                 = 220;
  31         const AS_RATE_LIMITED                   = 221;
  32         const AS_ARTICLE_WAS_DELETED            = 222;
  33         const AS_NO_CREATE_PERMISSION           = 223;
  34         const AS_BLANK_ARTICLE                  = 224;
  35         const AS_CONFLICT_DETECTED              = 225;
  36         const AS_SUMMARY_NEEDED                 = 226;
  37         const AS_TEXTBOX_EMPTY                  = 228;
  38         const AS_MAX_ARTICLE_SIZE_EXCEEDED      = 229;
  39         const AS_OK                             = 230;
  40         const AS_END                            = 231;
  41         const AS_SPAM_ERROR                     = 232;
  42         const AS_IMAGE_REDIRECT_ANON            = 233;
  43         const AS_IMAGE_REDIRECT_LOGGED          = 234;
  44
  45         var $mArticle;
  46         var $mTitle;
  47         var $action;
  48         var $mMetaData = '';
  49         var $isConflict = false;
  50         var $isCssJsSubpage = false;
  51         var $deletedSinceEdit = false;
  52         var $formtype;
  53         var $firsttime;
  54         var $lastDelete;
  55         var $mTokenOk = false;
  56         var $mTokenOkExceptSuffix = false;
  57         var $mTriedSave = false;
  58         var $tooBig = false;
  59         var $kblength = false;
  60         var $missingComment = false;
  61         var $missingSummary = false;
  62         var $allowBlankSummary = false;
  63         var $autoSumm = '';
  64         var $hookError = '';
  65         #var $mPreviewTemplates;
  66         var $mParserOutput;
  67         var $mBaseRevision = false;
  68
  69         # Form values
  70         var $save = false, $preview = false, $diff = false;
  71         var $minoredit = false, $watchthis = false, $recreate = false;
  72         var $textbox1 = '', $textbox2 = '', $summary = '';
  73         var $edittime = '', $section = '', $starttime = '';
  74         var $oldid = 0, $editintro = '', $scrolltop = null;
  75
  76         # Placeholders for text injection by hooks (must be HTML)
  77         # extensions should take care to _append_ to the present value
  78         public $editFormPageTop; // Before even the preview
  79         public $editFormTextTop;
  80         public $editFormTextBeforeContent;
  81         public $editFormTextAfterWarn;
  82         public $editFormTextAfterTools;
  83         public $editFormTextBottom;
  84
  85         /* $didSave should be set to true whenever an article was succesfully altered. */
  86         public $didSave = false;
  87         public $undidRev = 0;
  88
  89         public $suppressIntro = false;
  90
  91         /**
  92          * @todo document
  93          * @param $article
  94          */
  95         function EditPage( $article ) {
  96                 $this->mArticle =& $article;
  97                 $this->mTitle = $article->getTitle();
  98                 $this->action = 'submit';
  99
 100                 # Placeholders for text injection by hooks (empty per default)
 101                 $this->editFormPageTop =
 102                 $this->editFormTextTop =
 103                 $this->editFormTextBeforeContent =
 104                 $this->editFormTextAfterWarn =
 105                 $this->editFormTextAfterTools =
 106                 $this->editFormTextBottom =
 107                 $this->mPreloadText = "";
 108         }
 109
 110         function getArticle() {
 111                 return $this->mArticle;
 112         }
 113
 114         /**
 115          * Fetch initial editing page content.
 116          * @private
 117          */
 118         function getContent( $def_text = '' ) {
 119                 global $wgOut, $wgRequest, $wgParser, $wgContLang, $wgMessageCache;
 120
 121                 wfProfileIn( __METHOD__ );
 122                 # Get variables from query string :P
 123                 $section = $wgRequest->getVal( 'section' );
 124                 $preload = $wgRequest->getVal( 'preload' );
 125                 $undoafter = $wgRequest->getVal( 'undoafter' );
 126                 $undo = $wgRequest->getVal( 'undo' );
 127
 128                 $text = '';
 129                 // For message page not locally set, use the i18n message.
 130                 // For other non-existent articles, use preload text if any.
 131                 if ( !$this->mTitle->exists() ) {
 132                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
 133                                 # If this is a system message, get the default text.
 134                                 list( $message, $lang ) = $wgMessageCache->figureMessage( $wgContLang->lcfirst( $this->mTitle->getText() ) );
 135                                 $wgMessageCache->loadAllMessages( $lang );
 136                                 $text = wfMsgGetKey( $message, false, $lang, false );
 137                                 if( wfEmptyMsg( $message, $text ) )
 138                                         $text = '';
 139                         } else {
 140                                 # If requested, preload some text.
 141                                 $text = $this->getPreloadedText( $preload );
 142                         }
 143                 // For existing pages, get text based on "undo" or section parameters.
 144                 } else {
 145                         $text = $this->mArticle->getContent();
 146                         if ( $undo > 0 && $undoafter > 0 && $undo < $undoafter ) {
 147                                 # If they got undoafter and undo round the wrong way, switch them
 148                                 list( $undo, $undoafter ) = array( $undoafter, $undo );
 149                         }
 150                         if ( $undo > 0 && $undo > $undoafter ) {
 151                                 # Undoing a specific edit overrides section editing; section-editing
 152                                 # doesn't work with undoing.
 153                                 if ( $undoafter ) {
 154                                         $undorev = Revision::newFromId($undo);
 155                                         $oldrev = Revision::newFromId($undoafter);
 156                                 } else {
 157                                         $undorev = Revision::newFromId($undo);
 158                                         $oldrev = $undorev ? $undorev->getPrevious() : null;
 159                                 }
 160
 161                                 # Sanity check, make sure it's the right page,
 162                                 # the revisions exist and they were not deleted.
 163                                 # Otherwise, $text will be left as-is.
 164                                 if ( !is_null( $undorev ) && !is_null( $oldrev ) &&
 165                                         $undorev->getPage() == $oldrev->getPage() &&
 166                                         $undorev->getPage() == $this->mArticle->getID() &&
 167                                         !$undorev->isDeleted( Revision::DELETED_TEXT ) &&
 168                                         !$oldrev->isDeleted( Revision::DELETED_TEXT ) ) {
 169
 170                                         $undotext = $this->mArticle->getUndoText( $undorev, $oldrev );
 171                                         if ( $undotext === false ) {
 172                                                 # Warn the user that something went wrong
 173                                                 $this->editFormPageTop .= $wgOut->parse( '<div class="error mw-undo-failure">' . wfMsgNoTrans( 'undo-failure' ) . '</div>' );
 174                                         } else {
 175                                                 $text = $undotext;
 176                                                 # Inform the user of our success and set an automatic edit summary
 177                                                 $this->editFormPageTop .= $wgOut->parse( '<div class="mw-undo-success">' . wfMsgNoTrans( 'undo-success' ) . '</div>' );
 178                                                 $firstrev = $oldrev->getNext();
 179                                                 # If we just undid one rev, use an autosummary
 180                                                 if ( $firstrev->mId == $undo ) {
 181                                                         $this->summary = wfMsgForContent( 'undo-summary', $undo, $undorev->getUserText() );
 182                                                         $this->undidRev = $undo;
 183                                                 }
 184                                                 $this->formtype = 'diff';
 185                                         }
 186                                 } else {
 187                                         // Failed basic sanity checks.
 188                                         // Older revisions may have been removed since the link
 189                                         // was created, or we may simply have got bogus input.
 190                                         $this->editFormPageTop .= $wgOut->parse( '<div class="error mw-undo-norev">' . wfMsgNoTrans( 'undo-norev' ) . '</div>' );
 191                                 }
 192                         } else if ( $section != '' ) {
 193                                 if ( $section == 'new' ) {
 194                                         $text = $this->getPreloadedText( $preload );
 195                                 } else {
 196                                         $text = $wgParser->getSection( $text, $section, $def_text );
 197                                 }
 198                         }
 199                 }
 200
 201                 wfProfileOut( __METHOD__ );
 202                 return $text;
 203         }
 204
 205         /** Use this method before edit() to preload some text into the edit box */
 206         public function setPreloadedText( $text ) {
 207                 $this->mPreloadText = $text;
 208         }
 209
 210         /**
 211          * Get the contents of a page from its title and remove includeonly tags
 212          *
 213          * @param $preload String: the title of the page.
 214          * @return string The contents of the page.
 215          */
 216         protected function getPreloadedText( $preload ) {
 217                 if ( !empty($this->mPreloadText) ) {
 218                         return $this->mPreloadText;
 219                 } elseif ( $preload === '' ) {
 220                         return '';
 221                 } else {
 222                         $preloadTitle = Title::newFromText( $preload );
 223                         if ( isset( $preloadTitle ) && $preloadTitle->userCanRead() ) {
 224                                 $rev = Revision::newFromTitle($preloadTitle);
 225                                 if ( is_object( $rev ) ) {
 226                                         $text = $rev->getText();
 227                                         // TODO FIXME: AAAAAAAAAAA, this shouldn't be implementing
 228                                         // its own mini-parser! -ævar
 229                                         $text = preg_replace( '~</?includeonly>~', '', $text );
 230                                         return $text;
 231                                 } else
 232                                         return '';
 233                         }
 234                 }
 235         }
 236
 237         /**
 238          * This is the function that extracts metadata from the article body on the first view.
 239          * To turn the feature on, set $wgUseMetadataEdit = true ; in LocalSettings
 240          *  and set $wgMetadataWhitelist to the *full* title of the template whitelist
 241          */
 242         function extractMetaDataFromArticle () {
 243                 global $wgUseMetadataEdit, $wgMetadataWhitelist, $wgContLang;
 244                 $this->mMetaData = '';
 245                 if ( !$wgUseMetadataEdit ) return;
 246                 if ( $wgMetadataWhitelist == '' ) return;
 247                 $s = '';
 248                 $t = $this->getContent();
 249
 250                 # MISSING : <nowiki> filtering
 251
 252                 # Categories and language links
 253                 $t = explode ( "\n" , $t );
 254                 $catlow = strtolower ( $wgContLang->getNsText( NS_CATEGORY ) );
 255                 $cat = $ll = array();
 256                 foreach ( $t AS $key => $x ) {
 257                         $y = trim ( strtolower ( $x ) );
 258                         while ( substr ( $y , 0 , 2 ) == '[[' ) {
 259                                 $y = explode ( ']]' , trim ( $x ) );
 260                                 $first = array_shift ( $y );
 261                                 $first = explode ( ':' , $first );
 262                                 $ns = array_shift ( $first );
 263                                 $ns = trim ( str_replace ( '[' , '' , $ns ) );
 264                                 if ( $wgContLang->getLanguageName( $ns ) || strtolower ( $ns ) == $catlow ) {
 265                                         $add = '[[' . $ns . ':' . implode ( ':' , $first ) . ']]';
 266                                         if ( strtolower ( $ns ) == $catlow ) $cat[] = $add;
 267                                         else $ll[] = $add;
 268                                         $x = implode ( ']]' , $y );
 269                                         $t[$key] = $x;
 270                                         $y = trim ( strtolower ( $x ) );
 271                                 } else {
 272                                         $x = implode ( ']]' , $y );
 273                                         $y = trim ( strtolower ( $x ) );
 274                                 }
 275                         }
 276                 }
 277                 if ( count ( $cat ) ) $s .= implode ( ' ' , $cat ) . "\n";
 278                 if ( count ( $ll ) ) $s .= implode ( ' ' , $ll ) . "\n";
 279                 $t = implode ( "\n" , $t );
 280
 281                 # Load whitelist
 282                 $sat = array () ; # stand-alone-templates; must be lowercase
 283                 $wl_title = Title::newFromText ( $wgMetadataWhitelist );
 284                 $wl_article = new Article ( $wl_title );
 285                 $wl = explode ( "\n" , $wl_article->getContent() );
 286                 foreach ( $wl AS $x ) {
 287                         $isentry = false;
 288                         $x = trim ( $x );
 289                         while ( substr ( $x , 0 , 1 ) == '*' ) {
 290                                 $isentry = true;
 291                                 $x = trim ( substr ( $x , 1 ) );
 292                         }
 293                         if ( $isentry ) {
 294                                 $sat[] = strtolower ( $x );
 295                         }
 296
 297                 }
 298
 299                 # Templates, but only some
 300                 $t = explode ( '{{' , $t );
 301                 $tl = array () ;
 302                 foreach ( $t AS $key => $x ) {
 303                         $y = explode ( '}}' , $x , 2 );
 304                         if ( count ( $y ) == 2 ) {
 305                                 $z = $y[0];
 306                                 $z = explode ( '|' , $z );
 307                                 $tn = array_shift ( $z );
 308                                 if ( in_array ( strtolower ( $tn ) , $sat ) ) {
 309                                         $tl[] = '{{' . $y[0] . '}}';
 310                                         $t[$key] = $y[1];
 311                                         $y = explode ( '}}' , $y[1] , 2 );
 312                                 }
 313                                 else $t[$key] = '{{' . $x;
 314                         }
 315                         else if ( $key != 0 ) $t[$key] = '{{' . $x;
 316                         else $t[$key] = $x;
 317                 }
 318                 if ( count ( $tl ) ) $s .= implode ( ' ' , $tl );
 319                 $t = implode ( '' , $t );
 320
 321                 $t = str_replace ( "\n\n\n" , "\n" , $t );
 322                 $this->mArticle->mContent = $t;
 323                 $this->mMetaData = $s;
 324         }
 325
 326         /*
 327          * Check if a page was deleted while the user was editing it, before submit.
 328          * Note that we rely on the logging table, which hasn't been always there,
 329          * but that doesn't matter, because this only applies to brand new
 330          * deletes.
 331          */
 332         protected function wasDeletedSinceLastEdit() {
 333                 if ( $this->deletedSinceEdit )
 334                         return true;
 335                 if ( $this->mTitle->isDeletedQuick() ) {
 336                         $this->lastDelete = $this->getLastDelete();
 337                         if ( $this->lastDelete ) {
 338                                 $deleteTime = wfTimestamp( TS_MW, $this->lastDelete->log_timestamp );
 339                                 if ( $deleteTime > $this->starttime ) {
 340                                         $this->deletedSinceEdit = true;
 341                                 }
 342                         }
 343                 }
 344                 return $this->deletedSinceEdit;
 345         }
 346
 347         function submit() {
 348                 $this->edit();
 349         }
 350
 351         /**
 352          * This is the function that gets called for "action=edit". It
 353          * sets up various member variables, then passes execution to
 354          * another function, usually showEditForm()
 355          *
 356          * The edit form is self-submitting, so that when things like
 357          * preview and edit conflicts occur, we get the same form back
 358          * with the extra stuff added.  Only when the final submission
 359          * is made and all is well do we actually save and redirect to
 360          * the newly-edited page.
 361          */
 362         function edit() {
 363                 global $wgOut, $wgRequest;
 364                 // Allow extensions to modify/prevent this form or submission
 365                 if ( !wfRunHooks( 'AlternateEdit', array( &$this ) ) ) {
 366                         return;
 367                 }
 368
 369                 wfProfileIn( __METHOD__ );
 370                 wfDebug( __METHOD__.": enter\n" );
 371
 372                 // This is not an article
 373                 $wgOut->setArticleFlag( false );
 374
 375                 $this->importFormData( $wgRequest );
 376                 $this->firsttime = false;
 377
 378                 if ( $this->live ) {
 379                         $this->livePreview();
 380                         wfProfileOut( __METHOD__ );
 381                         return;
 382                 }
 383
 384                 if ( wfReadOnly() && $this->save ) {
 385                                 // Force preview
 386                                 $this->save = false;
 387                                 $this->preview = true;
 388                 }
 389
 390                 $wgOut->addScriptFile( 'edit.js' );
 391                 $permErrors = $this->getEditPermissionErrors();
 392                 if ( $permErrors ) {
 393                         wfDebug( __METHOD__.": User can't edit\n" );
 394                         $this->readOnlyPage( $this->getContent(), true, $permErrors, 'edit' );
 395                         wfProfileOut( __METHOD__ );
 396                         return;
 397                 } else {
 398                         if ( $this->save ) {
 399                                 $this->formtype = 'save';
 400                         } else if ( $this->preview ) {
 401                                 $this->formtype = 'preview';
 402                         } else if ( $this->diff ) {
 403                                 $this->formtype = 'diff';
 404                         } else { # First time through
 405                                 $this->firsttime = true;
 406                                 if ( $this->previewOnOpen() ) {
 407                                         $this->formtype = 'preview';
 408                                 } else {
 409                                         $this->extractMetaDataFromArticle () ;
 410                                         $this->formtype = 'initial';
 411                                 }
 412                         }
 413                 }
 414
 415                 // If they used redlink=1 and the page exists, redirect to the main article
 416                 if ( $wgRequest->getBool( 'redlink' ) && $this->mTitle->exists() ) {
 417                         $wgOut->redirect( $this->mTitle->getFullURL() );
 418                 }
 419
 420                 wfProfileIn( __METHOD__."-business-end" );
 421
 422                 $this->isConflict = false;
 423                 // css / js subpages of user pages get a special treatment
 424                 $this->isCssJsSubpage      = $this->mTitle->isCssJsSubpage();
 425                 $this->isValidCssJsSubpage = $this->mTitle->isValidCssJsSubpage();
 426
 427                 # Show applicable editing introductions
 428                 if ( $this->formtype == 'initial' || $this->firsttime )
 429                         $this->showIntro();
 430
 431                 if ( $this->mTitle->isTalkPage() ) {
 432                         $wgOut->addWikiMsg( 'talkpagetext' );
 433                 }
 434
 435                 # Optional notices on a per-namespace and per-page basis
 436                 $editnotice_ns   = 'editnotice-'.$this->mTitle->getNamespace();
 437                 if ( !wfEmptyMsg( $editnotice_ns, wfMsgForContent( $editnotice_ns ) ) ) {
 438                         $wgOut->addWikiText( wfMsgForContent( $editnotice_ns )  );
 439                 }
 440                 if ( MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
 441                         $parts = explode( '/', $this->mTitle->getDBkey() );
 442                         $editnotice_base = $editnotice_ns;
 443                         while ( count( $parts ) > 0 ) {
 444                                 $editnotice_base .= '-'.array_shift( $parts );
 445                                 if ( !wfEmptyMsg( $editnotice_base, wfMsgForContent( $editnotice_base ) ) ) {
 446                                         $wgOut->addWikiText( wfMsgForContent( $editnotice_base )  );
 447                                 }
 448                         }
 449                 }
 450
 451                 # Attempt submission here.  This will check for edit conflicts,
 452                 # and redundantly check for locked database, blocked IPs, etc.
 453                 # that edit() already checked just in case someone tries to sneak
 454                 # in the back door with a hand-edited submission URL.
 455
 456                 if ( 'save' == $this->formtype ) {
 457                         if ( !$this->attemptSave() ) {
 458                                 wfProfileOut( __METHOD__."-business-end" );
 459                                 wfProfileOut( __METHOD__ );
 460                                 return;
 461                         }
 462                 }
 463
 464                 # First time through: get contents, set time for conflict
 465                 # checking, etc.
 466                 if ( 'initial' == $this->formtype || $this->firsttime ) {
 467                         if ( $this->initialiseForm() === false) {
 468                                 $this->noSuchSectionPage();
 469                                 wfProfileOut( __METHOD__."-business-end" );
 470                                 wfProfileOut( __METHOD__ );
 471                                 return;
 472                         }
 473                         if ( !$this->mTitle->getArticleId() )
 474                                 wfRunHooks( 'EditFormPreloadText', array( &$this->textbox1, &$this->mTitle ) );
 475                 }
 476
 477                 $this->showEditForm();
 478                 wfProfileOut( __METHOD__."-business-end" );
 479                 wfProfileOut( __METHOD__ );
 480         }
 481
 482         protected function getEditPermissionErrors() {
 483                 global $wgUser;
 484                 $permErrors = $this->mTitle->getUserPermissionsErrors( 'edit', $wgUser );
 485                 # Can this title be created?
 486                 if ( !$this->mTitle->exists() ) {
 487                         $permErrors = array_merge( $permErrors,
 488                                 wfArrayDiff2( $this->mTitle->getUserPermissionsErrors( 'create', $wgUser ), $permErrors ) );
 489                 }
 490                 # Ignore some permissions errors when a user is just previewing/viewing diffs
 491                 $remove = array();
 492                 foreach( $permErrors as $error ) {
 493                         if ( ($this->preview || $this->diff) &&
 494                                 ($error[0] == 'blockedtext' || $error[0] == 'autoblockedtext') )
 495                         {
 496                                 $remove[] = $error;
 497                         }
 498                 }
 499                 $permErrors = wfArrayDiff2( $permErrors, $remove );
 500                 return $permErrors;
 501         }
 502
 503         /**
 504          * Show a read-only error
 505          * Parameters are the same as OutputPage:readOnlyPage()
 506          * Redirect to the article page if redlink=1
 507          */
 508         function readOnlyPage( $source = null, $protected = false, $reasons = array(), $action = null ) {
 509                 global $wgRequest, $wgOut;
 510                 if ( $wgRequest->getBool( 'redlink' ) ) {
 511                         // The edit page was reached via a red link.
 512                         // Redirect to the article page and let them click the edit tab if
 513                         // they really want a permission error.
 514                         $wgOut->redirect( $this->mTitle->getFullUrl() );
 515                 } else {
 516                         $wgOut->readOnlyPage( $source, $protected, $reasons, $action );
 517                 }
 518         }
 519
 520         /**
 521          * Should we show a preview when the edit form is first shown?
 522          *
 523          * @return bool
 524          */
 525         protected function previewOnOpen() {
 526                 global $wgRequest, $wgUser;
 527                 if ( $wgRequest->getVal( 'preview' ) == 'yes' ) {
 528                         // Explicit override from request
 529                         return true;
 530                 } elseif ( $wgRequest->getVal( 'preview' ) == 'no' ) {
 531                         // Explicit override from request
 532                         return false;
 533                 } elseif ( $this->section == 'new' ) {
 534                         // Nothing *to* preview for new sections
 535                         return false;
 536                 } elseif ( ( $wgRequest->getVal( 'preload' ) !== null || $this->mTitle->exists() ) && $wgUser->getOption( 'previewonfirst' ) ) {
 537                         // Standard preference behaviour
 538                         return true;
 539                 } elseif ( !$this->mTitle->exists() && $this->mTitle->getNamespace() == NS_CATEGORY ) {
 540                         // Categories are special
 541                         return true;
 542                 } else {
 543                         return false;
 544                 }
 545         }
 546
 547         /**
 548          * @todo document
 549          * @param $request
 550          */
 551         function importFormData( &$request ) {
 552                 global $wgLang, $wgUser;
 553                 $fname = 'EditPage::importFormData';
 554                 wfProfileIn( $fname );
 555
 556                 # Section edit can come from either the form or a link
 557                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 558
 559                 if ( $request->wasPosted() ) {
 560                         # These fields need to be checked for encoding.
 561                         # Also remove trailing whitespace, but don't remove _initial_
 562                         # whitespace from the text boxes. This may be significant formatting.
 563                         $this->textbox1 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
 564                         $this->textbox2 = $this->safeUnicodeInput( $request, 'wpTextbox2' );
 565                         $this->mMetaData = rtrim( $request->getText( 'metadata' ) );
 566                         # Truncate for whole multibyte characters. +5 bytes for ellipsis
 567                         $this->summary = $wgLang->truncate( $request->getText( 'wpSummary' ), 250, '' );
 568
 569                         # Remove extra headings from summaries and new sections.
 570                         $this->summary = preg_replace('/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->summary);
 571
 572                         $this->edittime = $request->getVal( 'wpEdittime' );
 573                         $this->starttime = $request->getVal( 'wpStarttime' );
 574
 575                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 576
 577                         if ( is_null( $this->edittime ) ) {
 578                                 # If the form is incomplete, force to preview.
 579                                 wfDebug( "$fname: Form data appears to be incomplete\n" );
 580                                 wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
 581                                 $this->preview = true;
 582                         } else {
 583                                 /* Fallback for live preview */
 584                                 $this->preview = $request->getCheck( 'wpPreview' ) || $request->getCheck( 'wpLivePreview' );
 585                                 $this->diff = $request->getCheck( 'wpDiff' );
 586
 587                                 // Remember whether a save was requested, so we can indicate
 588                                 // if we forced preview due to session failure.
 589                                 $this->mTriedSave = !$this->preview;
 590
 591                                 if ( $this->tokenOk( $request ) ) {
 592                                         # Some browsers will not report any submit button
 593                                         # if the user hits enter in the comment box.
 594                                         # The unmarked state will be assumed to be a save,
 595                                         # if the form seems otherwise complete.
 596                                         wfDebug( "$fname: Passed token check.\n" );
 597                                 } else if ( $this->diff ) {
 598                                         # Failed token check, but only requested "Show Changes".
 599                                         wfDebug( "$fname: Failed token check; Show Changes requested.\n" );
 600                                 } else {
 601                                         # Page might be a hack attempt posted from
 602                                         # an external site. Preview instead of saving.
 603                                         wfDebug( "$fname: Failed token check; forcing preview\n" );
 604                                         $this->preview = true;
 605                                 }
 606                         }
 607                         $this->save = !$this->preview && !$this->diff;
 608                         if ( !preg_match( '/^\d{14}$/', $this->edittime )) {
 609                                 $this->edittime = null;
 610                         }
 611
 612                         if ( !preg_match( '/^\d{14}$/', $this->starttime )) {
 613                                 $this->starttime = null;
 614                         }
 615
 616                         $this->recreate  = $request->getCheck( 'wpRecreate' );
 617
 618                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 619                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 620
 621                         # Don't force edit summaries when a user is editing their own user or talk page
 622                         if ( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK ) &&
 623                                 $this->mTitle->getText() == $wgUser->getName() )
 624                         {
 625                                 $this->allowBlankSummary = true;
 626                         } else {
 627                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' ) || !$wgUser->getOption( 'forceeditsummary');
 628                         }
 629
 630                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
 631                 } else {
 632                         # Not a posted form? Start with nothing.
 633                         wfDebug( "$fname: Not a posted form.\n" );
 634                         $this->textbox1  = '';
 635                         $this->textbox2  = '';
 636                         $this->mMetaData = '';
 637                         $this->summary   = '';
 638                         $this->edittime  = '';
 639                         $this->starttime = wfTimestampNow();
 640                         $this->edit      = false;
 641                         $this->preview   = false;
 642                         $this->save      = false;
 643                         $this->diff      = false;
 644                         $this->minoredit = false;
 645                         $this->watchthis = false;
 646                         $this->recreate  = false;
 647
 648                         if ( $this->section == 'new' && $request->getVal( 'preloadtitle' ) ) {
 649                                 $this->summary = $request->getVal( 'preloadtitle' );
 650                         }
 651                         elseif ( $this->section != 'new' && $request->getVal( 'summary' ) ) {
 652                                 $this->summary = $request->getText( 'summary' );
 653                         }
 654
 655                         if ( $request->getVal( 'minor' ) ) {
 656                                 $this->minoredit = true;
 657                         }
 658                 }
 659
 660                 $this->oldid = $request->getInt( 'oldid' );
 661
 662                 $this->live = $request->getCheck( 'live' );
 663                 $this->editintro = $request->getText( 'editintro' );
 664
 665                 wfProfileOut( $fname );
 666         }
 667
 668         /**
 669          * Make sure the form isn't faking a user's credentials.
 670          *
 671          * @param $request WebRequest
 672          * @return bool
 673          * @private
 674          */
 675         function tokenOk( &$request ) {
 676                 global $wgUser;
 677                 $token = $request->getVal( 'wpEditToken' );
 678                 $this->mTokenOk = $wgUser->matchEditToken( $token );
 679                 $this->mTokenOkExceptSuffix = $wgUser->matchEditTokenNoSuffix( $token );
 680                 return $this->mTokenOk;
 681         }
 682
 683         /**
 684          * Show all applicable editing introductions
 685          */
 686         protected function showIntro() {
 687                 global $wgOut, $wgUser;
 688                 if ( $this->suppressIntro ) {
 689                         return;
 690                 }
 691
 692                 $namespace = $this->mTitle->getNamespace();
 693
 694                 if ( $namespace == NS_MEDIAWIKI ) {
 695                         # Show a warning if editing an interface message
 696                         $wgOut->wrapWikiMsg( "<div class='mw-editinginterface'>\n$1</div>", 'editinginterface' );
 697                 }
 698
 699                 # Show a warning message when someone creates/edits a user (talk) page but the user does not exists
 700                 if ( $namespace == NS_USER || $namespace == NS_USER_TALK ) {
 701                         $parts = explode( '/', $this->mTitle->getText(), 2 );
 702                         $username = $parts[0];
 703                         $id = User::idFromName( $username );
 704                         $ip = User::isIP( $username );
 705                         if ( $id == 0 && !$ip ) {
 706                                 $wgOut->wrapWikiMsg( '<div class="mw-userpage-userdoesnotexist error">$1</div>',
 707                                         array( 'userpage-userdoesnotexist', $username ) );
 708                         }
 709                 }
 710                 # Try to add a custom edit intro, or use the standard one if this is not possible.
 711                 if ( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
 712                         if ( $wgUser->isLoggedIn() ) {
 713                                 $wgOut->wrapWikiMsg( '<div class="mw-newarticletext">$1</div>', 'newarticletext' );
 714                         } else {
 715                                 $wgOut->wrapWikiMsg( '<div class="mw-newarticletextanon">$1</div>', 'newarticletextanon' );
 716                         }
 717                 }
 718                 # Give a notice if the user is editing a deleted/moved page...
 719                 if ( !$this->mTitle->exists() ) {
 720                         $this->showLogs( $wgOut );
 721                 }
 722         }
 723
 724         /**
 725          * Attempt to show a custom editing introduction, if supplied
 726          *
 727          * @return bool
 728          */
 729         protected function showCustomIntro() {
 730                 if ( $this->editintro ) {
 731                         $title = Title::newFromText( $this->editintro );
 732                         if ( $title instanceof Title && $title->exists() && $title->userCanRead() ) {
 733                                 global $wgOut;
 734                                 $revision = Revision::newFromTitle( $title );
 735                                 $wgOut->addWikiTextTitleTidy( $revision->getText(), $this->mTitle );
 736                                 return true;
 737                         } else {
 738                                 return false;
 739                         }
 740                 } else {
 741                         return false;
 742                 }
 743         }
 744
 745         /**
 746          * Attempt submission (no UI)
 747          * @return one of the constants describing the result
 748          */
 749         function internalAttemptSave( &$result, $bot = false ) {
 750                 global $wgFilterCallback, $wgUser, $wgOut, $wgParser;
 751                 global $wgMaxArticleSize;
 752
 753                 $fname = 'EditPage::attemptSave';
 754                 wfProfileIn( $fname );
 755                 wfProfileIn( "$fname-checks" );
 756
 757                 if ( !wfRunHooks( 'EditPage::attemptSave', array( &$this ) ) )
 758                 {
 759                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving\n" );
 760                         return self::AS_HOOK_ERROR;
 761                 }
 762
 763                 # Check image redirect
 764                 if ( $this->mTitle->getNamespace() == NS_FILE &&
 765                         Title::newFromRedirect( $this->textbox1 ) instanceof Title &&
 766                         !$wgUser->isAllowed( 'upload' ) ) {
 767                                 if ( $wgUser->isAnon() ) {
 768                                         return self::AS_IMAGE_REDIRECT_ANON;
 769                                 } else {
 770                                         return self::AS_IMAGE_REDIRECT_LOGGED;
 771                                 }
 772                 }
 773
 774                 # Reintegrate metadata
 775                 if ( $this->mMetaData != '' ) $this->textbox1 .= "\n" . $this->mMetaData ;
 776                 $this->mMetaData = '' ;
 777
 778                 # Check for spam
 779                 $match = self::matchSummarySpamRegex( $this->summary );
 780                 if ( $match === false ) {
 781                         $match = self::matchSpamRegex( $this->textbox1 );
 782                 }
 783                 if ( $match !== false ) {
 784                         $result['spam'] = $match;
 785                         $ip = wfGetIP();
 786                         $pdbk = $this->mTitle->getPrefixedDBkey();
 787                         $match = str_replace( "\n", '', $match );
 788                         wfDebugLog( 'SpamRegex', "$ip spam regex hit [[$pdbk]]: \"$match\"" );
 789                         wfProfileOut( "$fname-checks" );
 790                         wfProfileOut( $fname );
 791                         return self::AS_SPAM_ERROR;
 792                 }
 793                 if ( $wgFilterCallback && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section, $this->hookError, $this->summary ) ) {
 794                         # Error messages or other handling should be performed by the filter function
 795                         wfProfileOut( "$fname-checks" );
 796                         wfProfileOut( $fname );
 797                         return self::AS_FILTERING;
 798                 }
 799                 if ( !wfRunHooks( 'EditFilter', array( $this, $this->textbox1, $this->section, &$this->hookError, $this->summary ) ) ) {
 800                         # Error messages etc. could be handled within the hook...
 801                         wfProfileOut( "$fname-checks" );
 802                         wfProfileOut( $fname );
 803                         return self::AS_HOOK_ERROR;
 804                 } elseif ( $this->hookError != '' ) {
 805                         # ...or the hook could be expecting us to produce an error
 806                         wfProfileOut( "$fname-checks" );
 807                         wfProfileOut( $fname );
 808                         return self::AS_HOOK_ERROR_EXPECTED;
 809                 }
 810                 if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
 811                         # Check block state against master, thus 'false'.
 812                         wfProfileOut( "$fname-checks" );
 813                         wfProfileOut( $fname );
 814                         return self::AS_BLOCKED_PAGE_FOR_USER;
 815                 }
 816                 $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
 817                 if ( $this->kblength > $wgMaxArticleSize ) {
 818                         // Error will be displayed by showEditForm()
 819                         $this->tooBig = true;
 820                         wfProfileOut( "$fname-checks" );
 821                         wfProfileOut( $fname );
 822                         return self::AS_CONTENT_TOO_BIG;
 823                 }
 824
 825                 if ( !$wgUser->isAllowed('edit') ) {
 826                         if ( $wgUser->isAnon() ) {
 827                                 wfProfileOut( "$fname-checks" );
 828                                 wfProfileOut( $fname );
 829                                 return self::AS_READ_ONLY_PAGE_ANON;
 830                         }
 831                         else {
 832                                 wfProfileOut( "$fname-checks" );
 833                                 wfProfileOut( $fname );
 834                                 return self::AS_READ_ONLY_PAGE_LOGGED;
 835                         }
 836                 }
 837
 838                 if ( wfReadOnly() ) {
 839                         wfProfileOut( "$fname-checks" );
 840                         wfProfileOut( $fname );
 841                         return self::AS_READ_ONLY_PAGE;
 842                 }
 843                 if ( $wgUser->pingLimiter() ) {
 844                         wfProfileOut( "$fname-checks" );
 845                         wfProfileOut( $fname );
 846                         return self::AS_RATE_LIMITED;
 847                 }
 848
 849                 # If the article has been deleted while editing, don't save it without
 850                 # confirmation
 851                 if ( $this->wasDeletedSinceLastEdit() && !$this->recreate ) {
 852                         wfProfileOut( "$fname-checks" );
 853                         wfProfileOut( $fname );
 854                         return self::AS_ARTICLE_WAS_DELETED;
 855                 }
 856
 857                 wfProfileOut( "$fname-checks" );
 858
 859                 # If article is new, insert it.
 860                 $aid = $this->mTitle->getArticleID( GAID_FOR_UPDATE );
 861                 if ( 0 == $aid ) {
 862                         // Late check for create permission, just in case *PARANOIA*
 863                         if ( !$this->mTitle->userCan( 'create' ) ) {
 864                                 wfDebug( "$fname: no create permission\n" );
 865                                 wfProfileOut( $fname );
 866                                 return self::AS_NO_CREATE_PERMISSION;
 867                         }
 868
 869                         # Don't save a new article if it's blank.
 870                         if ( '' == $this->textbox1 ) {
 871                                 wfProfileOut( $fname );
 872                                 return self::AS_BLANK_ARTICLE;
 873                         }
 874
 875                         // Run post-section-merge edit filter
 876                         if ( !wfRunHooks( 'EditFilterMerged', array( $this, $this->textbox1, &$this->hookError, $this->summary ) ) ) {
 877                                 # Error messages etc. could be handled within the hook...
 878                                 wfProfileOut( $fname );
 879                                 return self::AS_HOOK_ERROR;
 880                         }
 881
 882                         # Handle the user preference to force summaries here. Check if it's not a redirect.
 883                         if ( !$this->allowBlankSummary && !Title::newFromRedirect( $this->textbox1 ) ) {
 884                                 if ( md5( $this->summary ) == $this->autoSumm ) {
 885                                         $this->missingSummary = true;
 886                                         wfProfileOut( $fname );
 887                                         return self::AS_SUMMARY_NEEDED;
 888                                 }
 889                         }
 890
 891                         $isComment = ( $this->section == 'new' );
 892
 893                         $this->mArticle->insertNewArticle( $this->textbox1, $this->summary,
 894                                 $this->minoredit, $this->watchthis, false, $isComment, $bot );
 895
 896                         wfProfileOut( $fname );
 897                         return self::AS_SUCCESS_NEW_ARTICLE;
 898                 }
 899
 900                 # Article exists. Check for edit conflict.
 901
 902                 $this->mArticle->clear(); # Force reload of dates, etc.
 903                 $this->mArticle->forUpdate( true ); # Lock the article
 904
 905                 wfDebug("timestamp: {$this->mArticle->getTimestamp()}, edittime: {$this->edittime}\n");
 906
 907                 if ( $this->mArticle->getTimestamp() != $this->edittime ) {
 908                         $this->isConflict = true;
 909                         if ( $this->section == 'new' ) {
 910                                 if ( $this->mArticle->getUserText() == $wgUser->getName() &&
 911                                         $this->mArticle->getComment() == $this->summary ) {
 912                                         // Probably a duplicate submission of a new comment.
 913                                         // This can happen when squid resends a request after
 914                                         // a timeout but the first one actually went through.
 915                                         wfDebug( "EditPage::editForm duplicate new section submission; trigger edit conflict!\n" );
 916                                 } else {
 917                                         // New comment; suppress conflict.
 918                                         $this->isConflict = false;
 919                                         wfDebug( "EditPage::editForm conflict suppressed; new section\n" );
 920                                 }
 921                         }
 922                 }
 923                 $userid = $wgUser->getId();
 924
 925                 # Suppress edit conflict with self, except for section edits where merging is required.
 926                 if ( $this->isConflict && $this->section == '' && $this->userWasLastToEdit($userid,$this->edittime) ) {
 927                         wfDebug( "EditPage::editForm Suppressing edit conflict, same user.\n" );
 928                         $this->isConflict = false;
 929                 }
 930
 931                 if ( $this->isConflict ) {
 932                         wfDebug( "EditPage::editForm conflict! getting section '$this->section' for time '$this->edittime' (article time '" .
 933                                 $this->mArticle->getTimestamp() . "')\n" );
 934                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary, $this->edittime );
 935                 } else {
 936                         wfDebug( "EditPage::editForm getting section '$this->section'\n" );
 937                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary );
 938                 }
 939                 if ( is_null( $text ) ) {
 940                         wfDebug( "EditPage::editForm activating conflict; section replace failed.\n" );
 941                         $this->isConflict = true;
 942                         $text = $this->textbox1; // do not try to merge here!
 943                 } else if ( $this->isConflict ) {
 944                         # Attempt merge
 945                         if ( $this->mergeChangesInto( $text ) ) {
 946                                 // Successful merge! Maybe we should tell the user the good news?
 947                                 $this->isConflict = false;
 948                                 wfDebug( "EditPage::editForm Suppressing edit conflict, successful merge.\n" );
 949                         } else {
 950                                 $this->section = '';
 951                                 $this->textbox1 = $text;
 952                                 wfDebug( "EditPage::editForm Keeping edit conflict, failed merge.\n" );
 953                         }
 954                 }
 955
 956                 if ( $this->isConflict ) {
 957                         wfProfileOut( $fname );
 958                         return self::AS_CONFLICT_DETECTED;
 959                 }
 960
 961                 $oldtext = $this->mArticle->getContent();
 962
 963                 // Run post-section-merge edit filter
 964                 if ( !wfRunHooks( 'EditFilterMerged', array( $this, $text, &$this->hookError, $this->summary ) ) ) {
 965                         # Error messages etc. could be handled within the hook...
 966                         wfProfileOut( $fname );
 967                         return self::AS_HOOK_ERROR;
 968                 }
 969
 970                 # Handle the user preference to force summaries here, but not for null edits
 971                 if ( $this->section != 'new' && !$this->allowBlankSummary && 0 != strcmp($oldtext,$text)
 972                         && !Title::newFromRedirect( $text ) ) # check if it's not a redirect
 973                 {
 974                         if ( md5( $this->summary ) == $this->autoSumm ) {
 975                                 $this->missingSummary = true;
 976                                 wfProfileOut( $fname );
 977                                 return self::AS_SUMMARY_NEEDED;
 978                         }
 979                 }
 980
 981                 # And a similar thing for new sections
 982                 if ( $this->section == 'new' && !$this->allowBlankSummary ) {
 983                         if (trim($this->summary) == '') {
 984                                 $this->missingSummary = true;
 985                                 wfProfileOut( $fname );
 986                                 return self::AS_SUMMARY_NEEDED;
 987                         }
 988                 }
 989
 990                 # All's well
 991                 wfProfileIn( "$fname-sectionanchor" );
 992                 $sectionanchor = '';
 993                 if ( $this->section == 'new' ) {
 994                         if ( $this->textbox1 == '' ) {
 995                                 $this->missingComment = true;
 996                                 return self::AS_TEXTBOX_EMPTY;
 997                         }
 998                         if ( $this->summary != '' ) {
 999                                 $sectionanchor = $wgParser->guessSectionNameFromWikiText( $this->summary );
1000                                 # This is a new section, so create a link to the new section
1001                                 # in the revision summary.
1002                                 $cleanSummary = $wgParser->stripSectionName( $this->summary );
1003                                 $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
1004                         }
1005                 } elseif ( $this->section != '' ) {
1006                         # Try to get a section anchor from the section source, redirect to edited section if header found
1007                         # XXX: might be better to integrate this into Article::replaceSection
1008                         # for duplicate heading checking and maybe parsing
1009                         $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
1010                         # we can't deal with anchors, includes, html etc in the header for now,
1011                         # headline would need to be parsed to improve this
1012                         if ( $hasmatch and strlen($matches[2]) > 0 ) {
1013                                 $sectionanchor = $wgParser->guessSectionNameFromWikiText( $matches[2] );
1014                         }
1015                 }
1016                 wfProfileOut( "$fname-sectionanchor" );
1017
1018                 // Save errors may fall down to the edit form, but we've now
1019                 // merged the section into full text. Clear the section field
1020                 // so that later submission of conflict forms won't try to
1021                 // replace that into a duplicated mess.
1022                 $this->textbox1 = $text;
1023                 $this->section = '';
1024
1025                 // Check for length errors again now that the section is merged in
1026                 $this->kblength = (int)(strlen( $text ) / 1024);
1027                 if ( $this->kblength > $wgMaxArticleSize ) {
1028                         $this->tooBig = true;
1029                         wfProfileOut( $fname );
1030                         return self::AS_MAX_ARTICLE_SIZE_EXCEEDED;
1031                 }
1032
1033                 # update the article here
1034                 if ( $this->mArticle->updateArticle( $text, $this->summary, $this->minoredit,
1035                         $this->watchthis, $bot, $sectionanchor ) )
1036                 {
1037                         wfProfileOut( $fname );
1038                         return self::AS_SUCCESS_UPDATE;
1039                 } else {
1040                         $this->isConflict = true;
1041                 }
1042                 wfProfileOut( $fname );
1043                 return self::AS_END;
1044         }
1045
1046         /**
1047          * Check if no edits were made by other users since
1048          * the time a user started editing the page. Limit to
1049          * 50 revisions for the sake of performance.
1050          */
1051         protected function userWasLastToEdit( $id, $edittime ) {
1052                 if( !$id ) return false;
1053                 $dbw = wfGetDB( DB_MASTER );
1054                 $res = $dbw->select( 'revision',
1055                         'rev_user',
1056                         array(
1057                                 'rev_page' => $this->mArticle->getId(),
1058                                 'rev_timestamp > '.$dbw->addQuotes( $dbw->timestamp($edittime) )
1059                         ),
1060                         __METHOD__,
1061                         array( 'ORDER BY' => 'rev_timestamp ASC', 'LIMIT' => 50 ) );
1062                 while( $row = $res->fetchObject() ) {
1063                         if( $row->rev_user != $id ) {
1064                                 return false;
1065                         }
1066                 }
1067                 return true;
1068         }
1069
1070         /**
1071          * Check given input text against $wgSpamRegex, and return the text of the first match.
1072          * @return mixed -- matching string or false
1073          */
1074         public static function matchSpamRegex( $text ) {
1075                 global $wgSpamRegex;
1076                 // For back compatibility, $wgSpamRegex may be a single string or an array of regexes.
1077                 $regexes = (array)$wgSpamRegex;
1078                 return self::matchSpamRegexInternal( $text, $regexes );
1079         }
1080
1081         /**
1082          * Check given input text against $wgSpamRegex, and return the text of the first match.
1083          * @return mixed -- matching string or false
1084          */
1085         public static function matchSummarySpamRegex( $text ) {
1086                 global $wgSummarySpamRegex;
1087                 $regexes = (array)$wgSummarySpamRegex;
1088                 return self::matchSpamRegexInternal( $text, $regexes );
1089         }
1090
1091         protected static function matchSpamRegexInternal( $text, $regexes ) {
1092                 foreach( $regexes as $regex ) {
1093                         $matches = array();
1094                         if( preg_match( $regex, $text, $matches ) ) {
1095                                 return $matches[0];
1096                         }
1097                 }
1098                 return false;
1099         }
1100
1101         /**
1102          * Initialise form fields in the object
1103          * Called on the first invocation, e.g. when a user clicks an edit link
1104          */
1105         function initialiseForm() {
1106                 $this->edittime = $this->mArticle->getTimestamp();
1107                 $this->textbox1 = $this->getContent( false );
1108                 if ( $this->textbox1 === false ) return false;
1109                 wfProxyCheck();
1110                 return true;
1111         }
1112
1113         function setHeaders() {
1114                 global $wgOut, $wgTitle;
1115                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1116                 if ( $this->formtype == 'preview' ) {
1117                         $wgOut->setPageTitleActionText( wfMsg( 'preview' ) );
1118                 }
1119                 if ( $this->isConflict ) {
1120                         $wgOut->setPageTitle( wfMsg( 'editconflict', $wgTitle->getPrefixedText() ) );
1121                 } elseif ( $this->section != '' ) {
1122                         $msg = $this->section == 'new' ? 'editingcomment' : 'editingsection';
1123                         $wgOut->setPageTitle( wfMsg( $msg, $wgTitle->getPrefixedText() ) );
1124                 } else {
1125                         # Use the title defined by DISPLAYTITLE magic word when present
1126                         if ( isset($this->mParserOutput)
1127                          && ( $dt = $this->mParserOutput->getDisplayTitle() ) !== false ) {
1128                                 $title = $dt;
1129                         } else {
1130                                 $title = $wgTitle->getPrefixedText();
1131                         }
1132                         $wgOut->setPageTitle( wfMsg( 'editing', $title ) );
1133                 }
1134         }
1135
1136         /**
1137          * Send the edit form and related headers to $wgOut
1138          * @param $formCallback Optional callable that takes an OutputPage
1139          *                      parameter; will be called during form output
1140          *                      near the top, for captchas and the like.
1141          */
1142         function showEditForm( $formCallback=null ) {
1143                 global $wgOut, $wgUser, $wgLang, $wgContLang, $wgMaxArticleSize, $wgTitle, $wgRequest;
1144
1145                 # If $wgTitle is null, that means we're in API mode.
1146                 # Some hook probably called this function  without checking
1147                 # for is_null($wgTitle) first. Bail out right here so we don't
1148                 # do lots of work just to discard it right after.
1149                 if (is_null($wgTitle))
1150                         return;
1151
1152                 $fname = 'EditPage::showEditForm';
1153                 wfProfileIn( $fname );
1154
1155                 $sk = $wgUser->getSkin();
1156
1157                 wfRunHooks( 'EditPage::showEditForm:initial', array( &$this ) ) ;
1158
1159                 #need to parse the preview early so that we know which templates are used,
1160                 #otherwise users with "show preview after edit box" will get a blank list
1161                 #we parse this near the beginning so that setHeaders can do the title
1162                 #setting work instead of leaving it in getPreviewText
1163                 $previewOutput = '';
1164                 if ( $this->formtype == 'preview' ) {
1165                         $previewOutput = $this->getPreviewText();
1166                 }
1167
1168                 $this->setHeaders();
1169
1170                 # Enabled article-related sidebar, toplinks, etc.
1171                 $wgOut->setArticleRelated( true );
1172
1173                 if ( $this->isConflict ) {
1174                         $wgOut->wrapWikiMsg( "<div class='mw-explainconflict'>\n$1</div>", 'explainconflict' );
1175
1176                         $this->textbox2 = $this->textbox1;
1177                         $this->textbox1 = $this->getContent();
1178                         $this->edittime = $this->mArticle->getTimestamp();
1179                 } else {
1180                         if ( $this->section != '' && $this->section != 'new' ) {
1181                                 $matches = array();
1182                                 if ( !$this->summary && !$this->preview && !$this->diff ) {
1183                                         preg_match( "/^(=+)(.+)\\1/mi", $this->textbox1, $matches );
1184                                         if ( !empty( $matches[2] ) ) {
1185                                                 global $wgParser;
1186                                                 $this->summary = "/* " .
1187                                                         $wgParser->stripSectionName(trim($matches[2])) .
1188                                                         " */ ";
1189                                         }
1190                                 }
1191                         }
1192
1193                         if ( $this->missingComment ) {
1194                                 $wgOut->wrapWikiMsg( '<div id="mw-missingcommenttext">$1</div>', 'missingcommenttext' );
1195                         }
1196
1197                         if ( $this->missingSummary && $this->section != 'new' ) {
1198                                 $wgOut->wrapWikiMsg( '<div id="mw-missingsummary">$1</div>', 'missingsummary' );
1199                         }
1200
1201                         if ( $this->missingSummary && $this->section == 'new' ) {
1202                                 $wgOut->wrapWikiMsg( '<div id="mw-missingcommentheader">$1</div>', 'missingcommentheader' );
1203                         }
1204
1205                         if ( $this->hookError !== '' ) {
1206                                 $wgOut->addWikiText( $this->hookError );
1207                         }
1208
1209                         if ( !$this->checkUnicodeCompliantBrowser() ) {
1210                                 $wgOut->addWikiMsg( 'nonunicodebrowser' );
1211                         }
1212                         if ( isset( $this->mArticle ) && isset( $this->mArticle->mRevision ) ) {
1213                         // Let sysop know that this will make private content public if saved
1214
1215                                 if ( !$this->mArticle->mRevision->userCan( Revision::DELETED_TEXT ) ) {
1216                                         $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1</div>\n", 'rev-deleted-text-permission' );
1217                                 } else if ( $this->mArticle->mRevision->isDeleted( Revision::DELETED_TEXT ) ) {
1218                                         $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1</div>\n", 'rev-deleted-text-view' );
1219                                 }
1220
1221                                 if ( !$this->mArticle->mRevision->isCurrent() ) {
1222                                         $this->mArticle->setOldSubtitle( $this->mArticle->mRevision->getId() );
1223                                         $wgOut->addWikiMsg( 'editingold' );
1224                                 }
1225                         }
1226                 }
1227
1228                 if ( wfReadOnly() ) {
1229                         $wgOut->wrapWikiMsg( "<div id=\"mw-read-only-warning\">\n$1\n</div>", array( 'readonlywarning', wfReadOnlyReason() ) );
1230                 } elseif ( $wgUser->isAnon() && $this->formtype != 'preview' ) {
1231                         $wgOut->wrapWikiMsg( '<div id="mw-anon-edit-warning">$1</div>', 'anoneditwarning' );
1232                 } else {
1233                         if ( $this->isCssJsSubpage ) {
1234                                 # Check the skin exists
1235                                 if ( $this->isValidCssJsSubpage ) {
1236                                         if ( $this->formtype !== 'preview' ) {
1237                                                 $wgOut->addWikiMsg( 'usercssjsyoucanpreview' );
1238                                         }
1239                                 } else {
1240                                         $wgOut->addWikiMsg( 'userinvalidcssjstitle', $wgTitle->getSkinFromCssJsSubpage() );
1241                                 }
1242                         }
1243                 }
1244
1245                 $classes = array(); // Textarea CSS
1246                 if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
1247                 } elseif ( $this->mTitle->isProtected( 'edit' ) ) {
1248                         # Is the title semi-protected?
1249                         if ( $this->mTitle->isSemiProtected() ) {
1250                                 $noticeMsg = 'semiprotectedpagewarning';
1251                                 $classes[] = 'mw-textarea-sprotected';
1252                         } else {
1253                                 # Then it must be protected based on static groups (regular)
1254                                 $noticeMsg = 'protectedpagewarning';
1255                                 $classes[] = 'mw-textarea-protected';
1256                         }
1257                         $wgOut->addHTML( "<div class='mw-warning-with-logexcerpt'>\n" );
1258                         $wgOut->addWikiMsg( $noticeMsg );
1259                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle->getPrefixedText(), '', 1 );
1260                         $wgOut->addHTML( "</div>\n" );
1261                 }
1262                 if ( $this->mTitle->isCascadeProtected() ) {
1263                         # Is this page under cascading protection from some source pages?
1264                         list($cascadeSources, /* $restrictions */) = $this->mTitle->getCascadeProtectionSources();
1265                         $notice = "<div class='mw-cascadeprotectedwarning'>$1\n";
1266                         $cascadeSourcesCount = count( $cascadeSources );
1267                         if ( $cascadeSourcesCount > 0 ) {
1268                                 # Explain, and list the titles responsible
1269                                 foreach( $cascadeSources as $page ) {
1270                                         $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
1271                                 }
1272                         }
1273                         $notice .= '</div>';
1274                         $wgOut->wrapWikiMsg( $notice, array( 'cascadeprotectedwarning', $cascadeSourcesCount ) );
1275                 }
1276                 if ( !$this->mTitle->exists() && $this->mTitle->getRestrictions( 'create' ) ) {
1277                         $wgOut->wrapWikiMsg( '<div class="mw-titleprotectedwarning">$1</div>', 'titleprotectedwarning' );
1278                 }
1279
1280                 if ( $this->kblength === false ) {
1281                         $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
1282                 }
1283                 if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
1284                         $wgOut->addHTML( "<div class='error' id='mw-edit-longpageerror'>\n" );
1285                         $wgOut->addWikiMsg( 'longpageerror', $wgLang->formatNum( $this->kblength ), $wgLang->formatNum( $wgMaxArticleSize ) );
1286                         $wgOut->addHTML( "</div>\n" );
1287                 } elseif ( $this->kblength > 29 ) {
1288                         $wgOut->addHTML( "<div id='mw-edit-longpagewarning'>\n" );
1289                         $wgOut->addWikiMsg( 'longpagewarning', $wgLang->formatNum( $this->kblength ) );
1290                         $wgOut->addHTML( "</div>\n" );
1291                 }
1292
1293                 $action = $wgTitle->escapeLocalURL( array( 'action' => $this->action ) );
1294
1295                 $summary = wfMsgExt( 'summary', 'parseinline' );
1296                 $subject = wfMsgExt( 'subject', 'parseinline' );
1297
1298                 $cancel = $sk->link(
1299                         $wgTitle,
1300                         wfMsgExt( 'cancel', array( 'parseinline' ) ),
1301                         array(),
1302                         array(),
1303                         array( 'known', 'noclasses' )
1304                 );
1305                 $separator = wfMsgExt( 'pipe-separator' , 'escapenoentities' );
1306                 $edithelpurl = Skin::makeInternalOrExternalUrl( wfMsgForContent( 'edithelppage' ));
1307                 $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
1308                         htmlspecialchars( wfMsg( 'edithelp' ) ).'</a> '.
1309                         htmlspecialchars( wfMsg( 'newwindow' ) );
1310
1311                 global $wgRightsText;
1312                 if ( $wgRightsText ) {
1313                         $copywarnMsg = array( 'copyrightwarning',
1314                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
1315                                 $wgRightsText );
1316                 } else {
1317                         $copywarnMsg = array( 'copyrightwarning2',
1318                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]' );
1319                 }
1320                 // Allow for site and per-namespace customization of contribution/copyright notice.
1321                 wfRunHooks( 'EditPageCopyrightWarning', array( $this->mTitle, &$copywarnMsg ) );
1322
1323                 if ( $wgUser->getOption('showtoolbar') and !$this->isCssJsSubpage ) {
1324                         # prepare toolbar for edit buttons
1325                         $toolbar = EditPage::getEditToolbar();
1326                 } else {
1327                         $toolbar = '';
1328                 }
1329
1330                 // activate checkboxes if user wants them to be always active
1331                 if ( !$this->preview && !$this->diff ) {
1332                         # Sort out the "watch" checkbox
1333                         if ( $wgUser->getOption( 'watchdefault' ) ) {
1334                                 # Watch all edits
1335                                 $this->watchthis = true;
1336                         } elseif ( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
1337                                 # Watch creations
1338                                 $this->watchthis = true;
1339                         } elseif ( $this->mTitle->userIsWatching() ) {
1340                                 # Already watched
1341                                 $this->watchthis = true;
1342                         }
1343
1344                         # May be overriden by request parameters
1345                         if( $wgRequest->getBool( 'watchthis' ) ) {
1346                                 $this->watchthis = true;
1347                         }
1348
1349                         if ( $wgUser->getOption( 'minordefault' ) ) $this->minoredit = true;
1350                 }
1351
1352                 $wgOut->addHTML( $this->editFormPageTop );
1353
1354                 if ( $wgUser->getOption( 'previewontop' ) ) {
1355                         $this->displayPreviewArea( $previewOutput, true );
1356                 }
1357
1358
1359                 $wgOut->addHTML( $this->editFormTextTop );
1360
1361                 # if this is a comment, show a subject line at the top, which is also the edit summary.
1362                 # Otherwise, show a summary field at the bottom
1363                 $summarytext = $wgContLang->recodeForEdit( $this->summary );
1364
1365                 # If a blank edit summary was previously provided, and the appropriate
1366                 # user preference is active, pass a hidden tag as wpIgnoreBlankSummary. This will stop the
1367                 # user being bounced back more than once in the event that a summary
1368                 # is not required.
1369                 #####
1370                 # For a bit more sophisticated detection of blank summaries, hash the
1371                 # automatic one and pass that in the hidden field wpAutoSummary.
1372                 $summaryhiddens =  '';
1373                 if ( $this->missingSummary ) $summaryhiddens .= Xml::hidden( 'wpIgnoreBlankSummary', true );
1374                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
1375                 $summaryhiddens .= Xml::hidden( 'wpAutoSummary', $autosumm );
1376                 if ( $this->section == 'new' ) {
1377                         $commentsubject = '';
1378                         if ( !$wgRequest->getBool( 'nosummary' ) ) {
1379                                 # Add a class if 'missingsummary' is triggered to allow styling of the summary line
1380                                 $summaryClass = $this->missingSummary ? 'mw-summarymissed' : 'mw-summary';
1381
1382                                 $commentsubject =
1383                                         Xml::tags( 'label', array( 'for' => 'wpSummary' ), $subject );
1384                                 $commentsubject =
1385                                         Xml::tags( 'span', array( 'class' => $summaryClass, 'id' => "wpSummaryLabel" ),
1386                                                 $commentsubject );
1387                                 $commentsubject .= '&nbsp;';
1388                                 $commentsubject .= Xml::input( 'wpSummary',
1389                                                                         60,
1390                                                                         $summarytext,
1391                                                                         array(
1392                                                                                 'id' => 'wpSummary',
1393                                                                                 'maxlength' => '200',
1394                                                                                 'tabindex' => '1'
1395                                                                         ) );
1396                         }
1397                         $editsummary = "<div class='editOptions'>\n";
1398                         global $wgParser;
1399                         $formattedSummary = wfMsgForContent( 'newsectionsummary', $wgParser->stripSectionName( $this->summary ) );
1400                         $subjectpreview = $summarytext && $this->preview ?
1401                                 "<div class=\"mw-summary-preview\">". wfMsgExt('subject-preview', 'parseinline') . $sk->commentBlock( $formattedSummary, $this->mTitle, true )."</div>\n" : '';
1402                         $summarypreview = '';
1403                 } else {
1404                         $commentsubject = '';
1405
1406                         # Add a class if 'missingsummary' is triggered to allow styling of the summary line
1407                         $summaryClass = $this->missingSummary ? 'mw-summarymissed' : 'mw-summary';
1408
1409                         $editsummary = Xml::tags( 'label', array( 'for' => 'wpSummary' ), $summary );
1410                         $editsummary = Xml::tags( 'span',  array( 'class' => $summaryClass, 'id' => "wpSummaryLabel" ),
1411                                         $editsummary ) . ' ';
1412
1413                         $editsummary .= Xml::input( 'wpSummary',
1414                                 60,
1415                                 $summarytext,
1416                                 array(
1417                                         'id' => 'wpSummary',
1418                                         'maxlength' => '200',
1419                                         'tabindex' => '1'
1420                                 ) );
1421
1422                         // No idea where this is closed.
1423                         $editsummary = Xml::openElement( 'div', array( 'class' => 'editOptions' ) )
1424                                                         . $editsummary . '<br/>';
1425
1426                         $summarypreview = '';
1427                         if ( $summarytext && $this->preview ) {
1428                                 $summarypreview =
1429                                         Xml::tags( 'div',
1430                                                 array( 'class' => 'mw-summary-preview' ),
1431                                                 wfMsgExt( 'summary-preview', 'parseinline' ) .
1432                                                         $sk->commentBlock( $this->summary, $this->mTitle )
1433                                         );
1434                         }
1435                         $subjectpreview = '';
1436                 }
1437                 $commentsubject .= $summaryhiddens;
1438
1439                 # Set focus to the edit box on load, except on preview or diff, where it would interfere with the display
1440                 if ( !$this->preview && !$this->diff ) {
1441                         $wgOut->setOnloadHandler( 'document.editform.wpTextbox1.focus()' );
1442                 }
1443                 $templates = $this->getTemplates();
1444                 $formattedtemplates = $sk->formatTemplates( $templates, $this->preview, $this->section != '');
1445
1446                 $hiddencats = $this->mArticle->getHiddenCategories();
1447                 $formattedhiddencats = $sk->formatHiddenCategories( $hiddencats );
1448
1449                 global $wgUseMetadataEdit ;
1450                 if ( $wgUseMetadataEdit ) {
1451                         $metadata = $this->mMetaData ;
1452                         $metadata = htmlspecialchars( $wgContLang->recodeForEdit( $metadata ) ) ;
1453                         $top = wfMsgWikiHtml( 'metadata_help' );
1454                         /* ToDo: Replace with clean code */
1455                         $ew = $wgUser->getOption( 'editwidth' );
1456                         if ( $ew ) $ew = " style=\"width:100%\"";
1457                         else $ew = '';
1458                         $cols = $wgUser->getIntOption( 'cols' );
1459                         /* /ToDo */
1460                         $metadata = $top . "<textarea name='metadata' rows='3' cols='{$cols}'{$ew}>{$metadata}</textarea>" ;
1461                 }
1462                 else $metadata = "" ;
1463
1464                 $recreate = '';
1465                 if ( $this->wasDeletedSinceLastEdit() ) {
1466                         if ( 'save' != $this->formtype ) {
1467                                 $wgOut->wrapWikiMsg(
1468                                         "<div class='error mw-deleted-while-editing'>\n$1</div>",
1469                                         'deletedwhileediting' );
1470                         } else {
1471                                 // Hide the toolbar and edit area, user can click preview to get it back
1472                                 // Add an confirmation checkbox and explanation.
1473                                 $toolbar = '';
1474                                 $recreate = '<div class="mw-confirm-recreate">' .
1475                                                 $wgOut->parse( wfMsg( 'confirmrecreate',  $this->lastDelete->user_name , $this->lastDelete->log_comment ) ) .
1476                                                 Xml::checkLabel( wfMsg( 'recreate' ), 'wpRecreate', 'wpRecreate', false,
1477                                                         array( 'title' => $sk->titleAttrib( 'recreate' ), 'tabindex' => 1, 'id' => 'wpRecreate' )
1478                                                 ) . '</div>';
1479                         }
1480                 }
1481
1482                 $tabindex = 2;
1483
1484                 $checkboxes = $this->getCheckboxes( $tabindex, $sk,
1485                         array( 'minor' => $this->minoredit, 'watch' => $this->watchthis ) );
1486
1487                 $checkboxhtml = implode( $checkboxes, "\n" );
1488
1489                 $buttons = $this->getEditButtons( $tabindex );
1490                 $buttonshtml = implode( $buttons, "\n" );
1491
1492                 $safemodehtml = $this->checkUnicodeCompliantBrowser()
1493                         ? '' : Xml::hidden( 'safemode', '1' );
1494
1495                 $wgOut->addHTML( <<<END
1496 {$toolbar}
1497 <form id="editform" name="editform" method="post" action="$action" enctype="multipart/form-data">
1498 END
1499 );
1500
1501                 if ( is_callable( $formCallback ) ) {
1502                         call_user_func_array( $formCallback, array( &$wgOut ) );
1503                 }
1504
1505                 wfRunHooks( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );
1506
1507                 // Put these up at the top to ensure they aren't lost on early form submission
1508                 $this->showFormBeforeText();
1509
1510                 $wgOut->addHTML( <<<END
1511 {$recreate}
1512 {$commentsubject}
1513 {$subjectpreview}
1514 {$this->editFormTextBeforeContent}
1515 END
1516 );
1517                 $this->showTextbox1( $classes );
1518
1519                 $wgOut->wrapWikiMsg( "<div id=\"editpage-copywarn\">\n$1\n</div>", $copywarnMsg );
1520                 $wgOut->addHTML( <<<END
1521 {$this->editFormTextAfterWarn}
1522 {$metadata}
1523 {$editsummary}
1524 {$summarypreview}
1525 {$checkboxhtml}
1526 {$safemodehtml}
1527 END
1528 );
1529
1530                 $wgOut->addHTML(
1531 "<div class='editButtons'>
1532 {$buttonshtml}
1533         <span class='editHelp'>{$cancel}{$separator}{$edithelp}</span>
1534 </div><!-- editButtons -->
1535 </div><!-- editOptions -->");
1536
1537                 /**
1538                  * To make it harder for someone to slip a user a page
1539                  * which submits an edit form to the wiki without their
1540                  * knowledge, a random token is associated with the login
1541                  * session. If it's not passed back with the submission,
1542                  * we won't save the page, or render user JavaScript and
1543                  * CSS previews.
1544                  *
1545                  * For anon editors, who may not have a session, we just
1546                  * include the constant suffix to prevent editing from
1547                  * broken text-mangling proxies.
1548                  */
1549                 $token = htmlspecialchars( $wgUser->editToken() );
1550                 $wgOut->addHTML( "\n<input type='hidden' value=\"$token\" name=\"wpEditToken\" />\n" );
1551
1552                 $this->showTosSummary();
1553                 $this->showEditTools();
1554
1555                 $wgOut->addHTML( <<<END
1556 {$this->editFormTextAfterTools}
1557 <div class='templatesUsed'>
1558 {$formattedtemplates}
1559 </div>
1560 <div class='hiddencats'>
1561 {$formattedhiddencats}
1562 </div>
1563 END
1564 );
1565
1566                 if ( $this->isConflict && wfRunHooks( 'EditPageBeforeConflictDiff', array( &$this, &$wgOut ) ) ) {
1567                         $wgOut->wrapWikiMsg( '==$1==', "yourdiff" );
1568
1569                         $de = new DifferenceEngine( $this->mTitle );
1570                         $de->setText( $this->textbox2, $this->textbox1 );
1571                         $de->showDiff( wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
1572
1573                         $wgOut->wrapWikiMsg( '==$1==', "yourtext" );
1574                         $this->showTextbox2();
1575                 }
1576                 $wgOut->addHTML( $this->editFormTextBottom );
1577                 $wgOut->addHTML( "</form>\n" );
1578                 if ( !$wgUser->getOption( 'previewontop' ) ) {
1579                         $this->displayPreviewArea( $previewOutput, false );
1580                 }
1581
1582                 wfProfileOut( $fname );
1583         }
1584
1585         protected function showFormBeforeText() {
1586                 global $wgOut;
1587                 $wgOut->addHTML( "
1588 <input type='hidden' value=\"" . htmlspecialchars( $this->section ) . "\" name=\"wpSection\" />
1589 <input type='hidden' value=\"{$this->starttime}\" name=\"wpStarttime\" />\n
1590 <input type='hidden' value=\"{$this->edittime}\" name=\"wpEdittime\" />\n
1591 <input type='hidden' value=\"{$this->scrolltop}\" name=\"wpScrolltop\" id=\"wpScrolltop\" />\n" );
1592         }
1593
1594         protected function showTextbox1( $classes ) {
1595                 $attribs = array( 'tabindex' => 1 );
1596
1597                 if ( $this->wasDeletedSinceLastEdit() )
1598                         $attribs['type'] = 'hidden';
1599                 if ( !empty($classes) )
1600                         $attribs['class'] = implode(' ',$classes);
1601
1602                 $this->showTextbox( $this->textbox1, 'wpTextbox1', $attribs );
1603         }
1604
1605         protected function showTextbox2() {
1606                 $this->showTextbox( $this->textbox2, 'wpTextbox2', array( 'tabindex' => 6 ) );
1607         }
1608
1609         protected function showTextbox( $content, $name, $attribs = array() ) {
1610                 global $wgOut, $wgUser;
1611
1612                 $wikitext = $this->safeUnicodeOutput( $content );
1613                 if ( $wikitext !== '' ) {
1614                         // Ensure there's a newline at the end, otherwise adding lines
1615                         // is awkward.
1616                         // But don't add a newline if the ext is empty, or Firefox in XHTML
1617                         // mode will show an extra newline. A bit annoying.
1618                         $wikitext .= "\n";
1619                 }
1620
1621                 $attribs['accesskey'] = ',';
1622                 $attribs['id'] = $name;
1623
1624                 if ( $wgUser->getOption( 'editwidth' ) )
1625                         $attribs['style'] = 'width: 100%';
1626
1627                 $wgOut->addHTML( Xml::textarea(
1628                         $name,
1629                         $wikitext,
1630                         $wgUser->getIntOption( 'cols' ), $wgUser->getIntOption( 'rows' ),
1631                         $attribs ) );
1632         }
1633
1634         protected function displayPreviewArea( $previewOutput, $isOnTop = false ) {
1635                 global $wgOut;
1636                 $classes = array();
1637                 if ( $isOnTop )
1638                         $classes[] = 'ontop';
1639
1640                 $attribs = array( 'id' => 'wikiPreview', 'class' => implode( ' ', $classes ) );
1641
1642                 if ( $this->formtype != 'preview' )
1643                         $attribs['style'] = 'display: none;';
1644
1645                 $wgOut->addHTML( Xml::openElement( 'div', $attribs ) );
1646
1647                 if ( $this->formtype == 'preview' ) {
1648                         $this->showPreview( $previewOutput );
1649                 }
1650
1651                 $wgOut->addHTML( '</div>' );
1652
1653                 if ( $this->formtype == 'diff') {
1654                         $this->showDiff();
1655                 }
1656         }
1657
1658         /**
1659          * Append preview output to $wgOut.
1660          * Includes category rendering if this is a category page.
1661          *
1662          * @param string $text The HTML to be output for the preview.
1663          */
1664         protected function showPreview( $text ) {
1665                 global $wgOut;
1666                 if ( $this->mTitle->getNamespace() == NS_CATEGORY) {
1667                         $this->mArticle->openShowCategory();
1668                 }
1669                 # This hook seems slightly odd here, but makes things more
1670                 # consistent for extensions.
1671                 wfRunHooks( 'OutputPageBeforeHTML',array( &$wgOut, &$text ) );
1672                 $wgOut->addHTML( $text );
1673                 if ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
1674                         $this->mArticle->closeShowCategory();
1675                 }
1676         }
1677
1678         /**
1679          * Live Preview lets us fetch rendered preview page content and
1680          * add it to the page without refreshing the whole page.
1681          * If not supported by the browser it will fall through to the normal form
1682          * submission method.
1683          *
1684          * This function outputs a script tag to support live preview, and
1685          * returns an onclick handler which should be added to the attributes
1686          * of the preview button
1687          */
1688         function doLivePreviewScript() {
1689                 global $wgOut, $wgTitle;
1690                 $wgOut->addScriptFile( 'preview.js' );
1691                 $liveAction = $wgTitle->getLocalUrl( array(
1692                         'action' => $this->action,
1693                         'wpPreview' => 'true',
1694                         'live' => 'true'
1695                 ) );
1696                 return "return !lpDoPreview(" .
1697                         "editform.wpTextbox1.value," .
1698                         '"' . $liveAction . '"' . ")";
1699         }
1700
1701         protected function showTosSummary() {
1702                 $msg = 'editpage-tos-summary';
1703                 // Give a chance for site and per-namespace customizations of
1704                 // terms of service summary link that might exist separately
1705                 // from the copyright notice.
1706                 //
1707                 // This will display between the save button and the edit tools,
1708                 // so should remain short!
1709                 wfRunHooks( 'EditPageTosSummary', array( $this->mTitle, &$msg ) );
1710                 $text = wfMsgForContent( $msg );
1711                 if( $text != '-' ) {
1712                         global $wgOut;
1713                         $wgOut->addHTML( '<div class="mw-tos-summary">' );
1714                         $wgOut->addWikiMsgArray( $msg, array(), array( 'content' ) );
1715                         $wgOut->addHTML( '</div>' );
1716                 }
1717         }
1718
1719         protected function showEditTools() {
1720                 global $wgOut;
1721                 $wgOut->addHTML( '<div class="mw-editTools">' );
1722                 $wgOut->addWikiMsgArray( 'edittools', array(), array( 'content' ) );
1723                 $wgOut->addHTML( '</div>' );
1724         }
1725
1726         protected function getLastDelete() {
1727                 $dbr = wfGetDB( DB_SLAVE );
1728                 $data = $dbr->selectRow(
1729                         array( 'logging', 'user' ),
1730                         array( 'log_type',
1731                                'log_action',
1732                                'log_timestamp',
1733                                'log_user',
1734                                'log_namespace',
1735                                'log_title',
1736                                'log_comment',
1737                                'log_params',
1738                                    'log_deleted',
1739                                'user_name' ),
1740                         array( 'log_namespace' => $this->mTitle->getNamespace(),
1741                                'log_title' => $this->mTitle->getDBkey(),
1742                                'log_type' => 'delete',
1743                                'log_action' => 'delete',
1744                                'user_id=log_user' ),
1745                         __METHOD__,
1746                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' )
1747                 );
1748                 // Quick paranoid permission checks...
1749                 if( is_object($data) ) {
1750                         if( $data->log_deleted & LogPage::DELETED_USER )
1751                                 $data->user_name = wfMsgHtml('rev-deleted-user');
1752                         if( $data->log_deleted & LogPage::DELETED_COMMENT )
1753                                 $data->log_comment = wfMsgHtml('rev-deleted-comment');
1754                 }
1755                 return $data;
1756         }
1757
1758         /**
1759          * Get the rendered text for previewing.
1760          * @return string
1761          */
1762         function getPreviewText() {
1763                 global $wgOut, $wgUser, $wgTitle, $wgParser, $wgLang, $wgContLang, $wgMessageCache;
1764
1765                 wfProfileIn( __METHOD__ );
1766
1767                 if ( $this->mTriedSave && !$this->mTokenOk ) {
1768                         if ( $this->mTokenOkExceptSuffix ) {
1769                                 $note = wfMsg( 'token_suffix_mismatch' );
1770                         } else {
1771                                 $note = wfMsg( 'session_fail_preview' );
1772                         }
1773                 } else {
1774                         $note = wfMsg( 'previewnote' );
1775                 }
1776
1777                 $parserOptions = ParserOptions::newFromUser( $wgUser );
1778                 $parserOptions->setEditSection( false );
1779                 $parserOptions->setIsPreview( true );
1780                 $parserOptions->setIsSectionPreview( !is_null($this->section) && $this->section !== '' );
1781
1782                 global $wgRawHtml;
1783                 if ( $wgRawHtml && !$this->mTokenOk ) {
1784                         // Could be an offsite preview attempt. This is very unsafe if
1785                         // HTML is enabled, as it could be an attack.
1786                         return $wgOut->parse( "<div class='previewnote'>" .
1787                                 wfMsg( 'session_fail_preview_html' ) . "</div>" );
1788                 }
1789
1790                 # don't parse user css/js, show message about preview
1791                 # XXX: stupid php bug won't let us use $wgTitle->isCssJsSubpage() here
1792
1793                 if ( $this->isCssJsSubpage ) {
1794                         if (preg_match("/\\.css$/", $this->mTitle->getText() ) ) {
1795                                 $previewtext = wfMsg('usercsspreview');
1796                         } else if (preg_match("/\\.js$/", $this->mTitle->getText() ) ) {
1797                                 $previewtext = wfMsg('userjspreview');
1798                         }
1799                         $parserOptions->setTidy(true);
1800                         $parserOutput = $wgParser->parse( $previewtext, $this->mTitle, $parserOptions );
1801                         $previewHTML = $parserOutput->mText;
1802                 } elseif ( $rt = Title::newFromRedirectArray( $this->textbox1 ) ) {
1803                         $previewHTML = $this->mArticle->viewRedirect( $rt, false );
1804                 } else {
1805                         $toparse = $this->textbox1;
1806
1807                         # If we're adding a comment, we need to show the
1808                         # summary as the headline
1809                         if ( $this->section=="new" && $this->summary!="" ) {
1810                                 $toparse="== {$this->summary} ==\n\n".$toparse;
1811                         }
1812
1813                         if ( $this->mMetaData != "" ) $toparse .= "\n" . $this->mMetaData;
1814
1815                         // Parse mediawiki messages with correct target language
1816                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
1817                                 list( /* $unused */, $lang ) = $wgMessageCache->figureMessage( $this->mTitle->getText() );
1818                                 $obj = wfGetLangObj( $lang );
1819                                 $parserOptions->setTargetLanguage( $obj );
1820                         }
1821
1822
1823                         $parserOptions->setTidy(true);
1824                         $parserOptions->enableLimitReport();
1825                         $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $toparse ),
1826                                         $this->mTitle, $parserOptions );
1827
1828                         $previewHTML = $parserOutput->getText();
1829                         $this->mParserOutput = $parserOutput;
1830                         $wgOut->addParserOutputNoText( $parserOutput );
1831
1832                         if ( count( $parserOutput->getWarnings() ) ) {
1833                                 $note .= "\n\n" . implode( "\n\n", $parserOutput->getWarnings() );
1834                         }
1835                 }
1836
1837                 if( $this->isConflict ) {
1838                         $conflict = '<h2 id="mw-previewconflict">' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
1839                 } else {
1840                         $conflict = '<hr />';
1841                 }
1842
1843                 $previewhead = "<div class='previewnote'>\n" .
1844                         '<h2 id="mw-previewheader">' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>" .
1845                         $wgOut->parse( $note ) . $conflict . "</div>\n";
1846
1847                 wfProfileOut( __METHOD__ );
1848                 return $previewhead . $previewHTML;
1849         }
1850
1851         function getTemplates() {
1852                 if ( $this->preview || $this->section != '' ) {
1853                         $templates = array();
1854                         if ( !isset($this->mParserOutput) ) return $templates;
1855                         foreach( $this->mParserOutput->getTemplates() as $ns => $template) {
1856                                 foreach( array_keys( $template ) as $dbk ) {
1857                                         $templates[] = Title::makeTitle($ns, $dbk);
1858                                 }
1859                         }
1860                         return $templates;
1861                 } else {
1862                         return $this->mArticle->getUsedTemplates();
1863                 }
1864         }
1865
1866         /**
1867          * Call the stock "user is blocked" page
1868          */
1869         function blockedPage() {
1870                 global $wgOut, $wgUser;
1871                 $wgOut->blockedPage( false ); # Standard block notice on the top, don't 'return'
1872
1873                 # If the user made changes, preserve them when showing the markup
1874                 # (This happens when a user is blocked during edit, for instance)
1875                 $first = $this->firsttime || ( !$this->save && $this->textbox1 == '' );
1876                 if ( $first ) {
1877                         $source = $this->mTitle->exists() ? $this->getContent() : false;
1878                 } else {
1879                         $source = $this->textbox1;
1880                 }
1881
1882                 # Spit out the source or the user's modified version
1883                 if ( $source !== false ) {
1884                         $rows = $wgUser->getIntOption( 'rows' );
1885                         $cols = $wgUser->getIntOption( 'cols' );
1886                         $attribs = array( 'id' => 'wpTextbox1', 'name' => 'wpTextbox1', 'cols' => $cols, 'rows' => $rows, 'readonly' => 'readonly' );
1887                         $wgOut->addHTML( '<hr />' );
1888                         $wgOut->addWikiMsg( $first ? 'blockedoriginalsource' : 'blockededitsource', $this->mTitle->getPrefixedText() );
1889                         # Why we don't use Xml::element here?
1890                         # Is it because if $source is '', it returns <textarea />?
1891                         $wgOut->addHTML( Xml::openElement( 'textarea', $attribs ) . htmlspecialchars( $source ) . Xml::closeElement( 'textarea' ) );
1892                 }
1893         }
1894
1895         /**
1896          * Produce the stock "please login to edit pages" page
1897          */
1898         function userNotLoggedInPage() {
1899                 global $wgUser, $wgOut, $wgTitle;
1900                 $skin = $wgUser->getSkin();
1901
1902                 $loginTitle = SpecialPage::getTitleFor( 'Userlogin' );
1903                 $loginLink = $skin->link(
1904                         $loginTitle,
1905                         wfMsgHtml( 'loginreqlink' ),
1906                         array(),
1907                         array( 'returnto' => $wgTitle->getPrefixedText() ),
1908                         array( 'known', 'noclasses' )
1909                 );
1910
1911                 $wgOut->setPageTitle( wfMsg( 'whitelistedittitle' ) );
1912                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1913                 $wgOut->setArticleRelated( false );
1914
1915                 $wgOut->addHTML( wfMsgWikiHtml( 'whitelistedittext', $loginLink ) );
1916                 $wgOut->returnToMain( false, $wgTitle );
1917         }
1918
1919         /**
1920          * Creates a basic error page which informs the user that
1921          * they have attempted to edit a nonexistent section.
1922          */
1923         function noSuchSectionPage() {
1924                 global $wgOut, $wgTitle;
1925
1926                 $wgOut->setPageTitle( wfMsg( 'nosuchsectiontitle' ) );
1927                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1928                 $wgOut->setArticleRelated( false );
1929
1930                 $wgOut->addWikiMsg( 'nosuchsectiontext', $this->section );
1931                 $wgOut->returnToMain( false, $wgTitle );
1932         }
1933
1934         /**
1935          * Produce the stock "your edit contains spam" page
1936          *
1937          * @param $match Text which triggered one or more filters
1938          */
1939         function spamPage( $match = false ) {
1940                 global $wgOut, $wgTitle;
1941
1942                 $wgOut->setPageTitle( wfMsg( 'spamprotectiontitle' ) );
1943                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1944                 $wgOut->setArticleRelated( false );
1945
1946                 $wgOut->addHTML( '<div id="spamprotected">' );
1947                 $wgOut->addWikiMsg( 'spamprotectiontext' );
1948                 if ( $match )
1949                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
1950                 $wgOut->addHTML( '</div>' );
1951
1952                 $wgOut->returnToMain( false, $wgTitle );
1953         }
1954
1955         /**
1956          * @private
1957          * @todo document
1958          */
1959         function mergeChangesInto( &$editText ){
1960                 $fname = 'EditPage::mergeChangesInto';
1961                 wfProfileIn( $fname );
1962
1963                 $db = wfGetDB( DB_MASTER );
1964
1965                 // This is the revision the editor started from
1966                 $baseRevision = $this->getBaseRevision();
1967                 if ( is_null( $baseRevision ) ) {
1968                         wfProfileOut( $fname );
1969                         return false;
1970                 }
1971                 $baseText = $baseRevision->getText();
1972
1973                 // The current state, we want to merge updates into it
1974                 $currentRevision = Revision::loadFromTitle( $db, $this->mTitle );
1975                 if ( is_null( $currentRevision ) ) {
1976                         wfProfileOut( $fname );
1977                         return false;
1978                 }
1979                 $currentText = $currentRevision->getText();
1980
1981                 $result = '';
1982                 if ( wfMerge( $baseText, $editText, $currentText, $result ) ) {
1983                         $editText = $result;
1984                         wfProfileOut( $fname );
1985                         return true;
1986                 } else {
1987                         wfProfileOut( $fname );
1988                         return false;
1989                 }
1990         }
1991
1992         /**
1993          * Check if the browser is on a blacklist of user-agents known to
1994          * mangle UTF-8 data on form submission. Returns true if Unicode
1995          * should make it through, false if it's known to be a problem.
1996          * @return bool
1997          * @private
1998          */
1999         function checkUnicodeCompliantBrowser() {
2000                 global $wgBrowserBlackList;
2001                 if ( empty( $_SERVER["HTTP_USER_AGENT"] ) ) {
2002                         // No User-Agent header sent? Trust it by default...
2003                         return true;
2004                 }
2005                 $currentbrowser = $_SERVER["HTTP_USER_AGENT"];
2006                 foreach ( $wgBrowserBlackList as $browser ) {
2007                         if ( preg_match($browser, $currentbrowser) ) {
2008                                 return false;
2009                         }
2010                 }
2011                 return true;
2012         }
2013
2014         /**
2015          * @deprecated use $wgParser->stripSectionName()
2016          */
2017         function pseudoParseSectionAnchor( $text ) {
2018                 global $wgParser;
2019                 return $wgParser->stripSectionName( $text );
2020         }
2021
2022         /**
2023          * Format an anchor fragment as it would appear for a given section name
2024          * @param string $text
2025          * @return string
2026          * @private
2027          */
2028         function sectionAnchor( $text ) {
2029                 global $wgParser;
2030                 return $wgParser->guessSectionNameFromWikiText( $text );
2031         }
2032
2033         /**
2034          * Shows a bulletin board style toolbar for common editing functions.
2035          * It can be disabled in the user preferences.
2036          * The necessary JavaScript code can be found in skins/common/edit.js.
2037          *
2038          * @return string
2039          */
2040         static function getEditToolbar() {
2041                 global $wgStylePath, $wgContLang, $wgLang, $wgJsMimeType;
2042
2043                 /**
2044                  * toolarray an array of arrays which each include the filename of
2045                  * the button image (without path), the opening tag, the closing tag,
2046                  * and optionally a sample text that is inserted between the two when no
2047                  * selection is highlighted.
2048                  * The tip text is shown when the user moves the mouse over the button.
2049                  *
2050                  * Already here are accesskeys (key), which are not used yet until someone
2051                  * can figure out a way to make them work in IE. However, we should make
2052                  * sure these keys are not defined on the edit page.
2053                  */
2054                 $toolarray = array(
2055                         array(
2056                                 'image'  => $wgLang->getImageFile('button-bold'),
2057                                 'id'     => 'mw-editbutton-bold',
2058                                 'open'   => '\'\'\'',
2059                                 'close'  => '\'\'\'',
2060                                 'sample' => wfMsg('bold_sample'),
2061                                 'tip'    => wfMsg('bold_tip'),
2062                                 'key'    => 'B'
2063                         ),
2064                         array(
2065                                 'image'  => $wgLang->getImageFile('button-italic'),
2066                                 'id'     => 'mw-editbutton-italic',
2067                                 'open'   => '\'\'',
2068                                 'close'  => '\'\'',
2069                                 'sample' => wfMsg('italic_sample'),
2070                                 'tip'    => wfMsg('italic_tip'),
2071                                 'key'    => 'I'
2072                         ),
2073                         array(
2074                                 'image'  => $wgLang->getImageFile('button-link'),
2075                                 'id'     => 'mw-editbutton-link',
2076                                 'open'   => '[[',
2077                                 'close'  => ']]',
2078                                 'sample' => wfMsg('link_sample'),
2079                                 'tip'    => wfMsg('link_tip'),
2080                                 'key'    => 'L'
2081                         ),
2082                         array(
2083                                 'image'  => $wgLang->getImageFile('button-extlink'),
2084                                 'id'     => 'mw-editbutton-extlink',
2085                                 'open'   => '[',
2086                                 'close'  => ']',
2087                                 'sample' => wfMsg('extlink_sample'),
2088                                 'tip'    => wfMsg('extlink_tip'),
2089                                 'key'    => 'X'
2090                         ),
2091                         array(
2092                                 'image'  => $wgLang->getImageFile('button-headline'),
2093                                 'id'     => 'mw-editbutton-headline',
2094                                 'open'   => "\n== ",
2095                                 'close'  => " ==\n",
2096                                 'sample' => wfMsg('headline_sample'),
2097                                 'tip'    => wfMsg('headline_tip'),
2098                                 'key'    => 'H'
2099                         ),
2100                         array(
2101                                 'image'  => $wgLang->getImageFile('button-image'),
2102                                 'id'     => 'mw-editbutton-image',
2103                                 'open'   => '[['.$wgContLang->getNsText(NS_FILE).':',
2104                                 'close'  => ']]',
2105                                 'sample' => wfMsg('image_sample'),
2106                                 'tip'    => wfMsg('image_tip'),
2107                                 'key'    => 'D'
2108                         ),
2109                         array(
2110                                 'image'  => $wgLang->getImageFile('button-media'),
2111                                 'id'     => 'mw-editbutton-media',
2112                                 'open'   => '[['.$wgContLang->getNsText(NS_MEDIA).':',
2113                                 'close'  => ']]',
2114                                 'sample' => wfMsg('media_sample'),
2115                                 'tip'    => wfMsg('media_tip'),
2116                                 'key'    => 'M'
2117                         ),
2118                         array(
2119                                 'image'  => $wgLang->getImageFile('button-math'),
2120                                 'id'     => 'mw-editbutton-math',
2121                                 'open'   => "<math>",
2122                                 'close'  => "</math>",
2123                                 'sample' => wfMsg('math_sample'),
2124                                 'tip'    => wfMsg('math_tip'),
2125                                 'key'    => 'C'
2126                         ),
2127                         array(
2128                                 'image'  => $wgLang->getImageFile('button-nowiki'),
2129                                 'id'     => 'mw-editbutton-nowiki',
2130                                 'open'   => "<nowiki>",
2131                                 'close'  => "</nowiki>",
2132                                 'sample' => wfMsg('nowiki_sample'),
2133                                 'tip'    => wfMsg('nowiki_tip'),
2134                                 'key'    => 'N'
2135                         ),
2136                         array(
2137                                 'image'  => $wgLang->getImageFile('button-sig'),
2138                                 'id'     => 'mw-editbutton-signature',
2139                                 'open'   => '--~~~~',
2140                                 'close'  => '',
2141                                 'sample' => '',
2142                                 'tip'    => wfMsg('sig_tip'),
2143                                 'key'    => 'Y'
2144                         ),
2145                         array(
2146                                 'image'  => $wgLang->getImageFile('button-hr'),
2147                                 'id'     => 'mw-editbutton-hr',
2148                                 'open'   => "\n----\n",
2149                                 'close'  => '',
2150                                 'sample' => '',
2151                                 'tip'    => wfMsg('hr_tip'),
2152                                 'key'    => 'R'
2153                         )
2154                 );
2155                 $toolbar = "<div id='toolbar'>\n";
2156                 $toolbar.="<script type='$wgJsMimeType'>\n/*<![CDATA[*/\n";
2157
2158                 foreach($toolarray as $tool) {
2159                         $params = array(
2160                                 $image = $wgStylePath.'/common/images/'.$tool['image'],
2161                                 // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
2162                                 // Older browsers show a "speedtip" type message only for ALT.
2163                                 // Ideally these should be different, realistically they
2164                                 // probably don't need to be.
2165                                 $tip = $tool['tip'],
2166                                 $open = $tool['open'],
2167                                 $close = $tool['close'],
2168                                 $sample = $tool['sample'],
2169                                 $cssId = $tool['id'],
2170                         );
2171
2172                         $paramList = implode( ',',
2173                                 array_map( array( 'Xml', 'encodeJsVar' ), $params ) );
2174                         $toolbar.="addButton($paramList);\n";
2175                 }
2176
2177                 $toolbar.="/*]]>*/\n</script>";
2178                 $toolbar.="\n</div>";
2179
2180                 wfRunHooks( 'EditPageBeforeEditToolbar', array( &$toolbar ) );
2181
2182                 return $toolbar;
2183         }
2184
2185         /**
2186          * Returns an array of html code of the following checkboxes:
2187          * minor and watch
2188          *
2189          * @param $tabindex Current tabindex
2190          * @param $skin Skin object
2191          * @param $checked Array of checkbox => bool, where bool indicates the checked
2192          *                 status of the checkbox
2193          *
2194          * @return array
2195          */
2196         public function getCheckboxes( &$tabindex, $skin, $checked ) {
2197                 global $wgUser;
2198
2199                 $checkboxes = array();
2200
2201                 $checkboxes['minor'] = '';
2202                 $minorLabel = wfMsgExt('minoredit', array('parseinline'));
2203                 if ( $wgUser->isAllowed('minoredit') ) {
2204                         $attribs = array(
2205                                 'tabindex'  => ++$tabindex,
2206                                 'accesskey' => wfMsg( 'accesskey-minoredit' ),
2207                                 'id'        => 'wpMinoredit',
2208                         );
2209                         $checkboxes['minor'] =
2210                                 Xml::check( 'wpMinoredit', $checked['minor'], $attribs ) .
2211                                 "&nbsp;<label for='wpMinoredit'".$skin->tooltip('minoredit', 'withaccess').">{$minorLabel}</label>";
2212                 }
2213
2214                 $watchLabel = wfMsgExt('watchthis', array('parseinline'));
2215                 $checkboxes['watch'] = '';
2216                 if ( $wgUser->isLoggedIn() ) {
2217                         $attribs = array(
2218                                 'tabindex'  => ++$tabindex,
2219                                 'accesskey' => wfMsg( 'accesskey-watch' ),
2220                                 'id'        => 'wpWatchthis',
2221                         );
2222                         $checkboxes['watch'] =
2223                                 Xml::check( 'wpWatchthis', $checked['watch'], $attribs ) .
2224                                 "&nbsp;<label for='wpWatchthis'".$skin->tooltip('watch', 'withaccess').">{$watchLabel}</label>";
2225                 }
2226                 wfRunHooks( 'EditPageBeforeEditChecks', array( &$this, &$checkboxes, &$tabindex ) );
2227                 return $checkboxes;
2228         }
2229
2230         /**
2231          * Returns an array of html code of the following buttons:
2232          * save, diff, preview and live
2233          *
2234          * @param $tabindex Current tabindex
2235          *
2236          * @return array
2237          */
2238         public function getEditButtons(&$tabindex) {
2239                 global $wgLivePreview, $wgUser;
2240
2241                 $buttons = array();
2242
2243                 $temp = array(
2244                         'id'        => 'wpSave',
2245                         'name'      => 'wpSave',
2246                         'type'      => 'submit',
2247                         'tabindex'  => ++$tabindex,
2248                         'value'     => wfMsg('savearticle'),
2249                         'accesskey' => wfMsg('accesskey-save'),
2250                         'title'     => wfMsg( 'tooltip-save' ).' ['.wfMsg( 'accesskey-save' ).']',
2251                 );
2252                 $buttons['save'] = Xml::element('input', $temp, '');
2253
2254                 ++$tabindex; // use the same for preview and live preview
2255                 if ( $wgLivePreview && $wgUser->getOption( 'uselivepreview' ) ) {
2256                         $temp = array(
2257                                 'id'        => 'wpPreview',
2258                                 'name'      => 'wpPreview',
2259                                 'type'      => 'submit',
2260                                 'tabindex'  => $tabindex,
2261                                 'value'     => wfMsg('showpreview'),
2262                                 'accesskey' => '',
2263                                 'title'     => wfMsg( 'tooltip-preview' ).' ['.wfMsg( 'accesskey-preview' ).']',
2264                                 'style'     => 'display: none;',
2265                         );
2266                         $buttons['preview'] = Xml::element('input', $temp, '');
2267
2268                         $temp = array(
2269                                 'id'        => 'wpLivePreview',
2270                                 'name'      => 'wpLivePreview',
2271                                 'type'      => 'submit',
2272                                 'tabindex'  => $tabindex,
2273                                 'value'     => wfMsg('showlivepreview'),
2274                                 'accesskey' => wfMsg('accesskey-preview'),
2275                                 'title'     => '',
2276                                 'onclick'   => $this->doLivePreviewScript(),
2277                         );
2278                         $buttons['live'] = Xml::element('input', $temp, '');
2279                 } else {
2280                         $temp = array(
2281                                 'id'        => 'wpPreview',
2282                                 'name'      => 'wpPreview',
2283                                 'type'      => 'submit',
2284                                 'tabindex'  => $tabindex,
2285                                 'value'     => wfMsg('showpreview'),
2286                                 'accesskey' => wfMsg('accesskey-preview'),
2287                                 'title'     => wfMsg( 'tooltip-preview' ).' ['.wfMsg( 'accesskey-preview' ).']',
2288                         );
2289                         $buttons['preview'] = Xml::element('input', $temp, '');
2290                         $buttons['live'] = '';
2291                 }
2292
2293                 $temp = array(
2294                         'id'        => 'wpDiff',
2295                         'name'      => 'wpDiff',
2296                         'type'      => 'submit',
2297                         'tabindex'  => ++$tabindex,
2298                         'value'     => wfMsg('showdiff'),
2299                         'accesskey' => wfMsg('accesskey-diff'),
2300                         'title'     => wfMsg( 'tooltip-diff' ).' ['.wfMsg( 'accesskey-diff' ).']',
2301                 );
2302                 $buttons['diff'] = Xml::element('input', $temp, '');
2303
2304                 wfRunHooks( 'EditPageBeforeEditButtons', array( &$this, &$buttons, &$tabindex ) );
2305                 return $buttons;
2306         }
2307
2308         /**
2309          * Output preview text only. This can be sucked into the edit page
2310          * via JavaScript, and saves the server time rendering the skin as
2311          * well as theoretically being more robust on the client (doesn't
2312          * disturb the edit box's undo history, won't eat your text on
2313          * failure, etc).
2314          *
2315          * @todo This doesn't include category or interlanguage links.
2316          *       Would need to enhance it a bit, <s>maybe wrap them in XML
2317          *       or something...</s> that might also require more skin
2318          *       initialization, so check whether that's a problem.
2319          */
2320         function livePreview() {
2321                 global $wgOut;
2322                 $wgOut->disable();
2323                 header( 'Content-type: text/xml; charset=utf-8' );
2324                 header( 'Cache-control: no-cache' );
2325
2326                 $previewText = $this->getPreviewText();
2327                 #$categories = $skin->getCategoryLinks();
2328
2329                 $s =
2330                 '<?xml version="1.0" encoding="UTF-8" ?>' . "\n" .
2331                 Xml::tags( 'livepreview', null,
2332                         Xml::element( 'preview', null, $previewText )
2333                         #.      Xml::element( 'category', null, $categories )
2334                 );
2335                 echo $s;
2336         }
2337
2338
2339         /**
2340          * Get a diff between the current contents of the edit box and the
2341          * version of the page we're editing from.
2342          *
2343          * If this is a section edit, we'll replace the section as for final
2344          * save and then make a comparison.
2345          */
2346         function showDiff() {
2347                 $oldtext = $this->mArticle->fetchContent();
2348                 $newtext = $this->mArticle->replaceSection(
2349                         $this->section, $this->textbox1, $this->summary, $this->edittime );
2350                 $newtext = $this->mArticle->preSaveTransform( $newtext );
2351                 $oldtitle = wfMsgExt( 'currentrev', array('parseinline') );
2352                 $newtitle = wfMsgExt( 'yourtext', array('parseinline') );
2353                 if ( $oldtext !== false  || $newtext != '' ) {
2354                         $de = new DifferenceEngine( $this->mTitle );
2355                         $de->setText( $oldtext, $newtext );
2356                         $difftext = $de->getDiff( $oldtitle, $newtitle );
2357                         $de->showDiffStyle();
2358                 } else {
2359                         $difftext = '';
2360                 }
2361
2362                 global $wgOut;
2363                 $wgOut->addHTML( '<div id="wikiDiff">' . $difftext . '</div>' );
2364         }
2365
2366         /**
2367          * Filter an input field through a Unicode de-armoring process if it
2368          * came from an old browser with known broken Unicode editing issues.
2369          *
2370          * @param WebRequest $request
2371          * @param string $field
2372          * @return string
2373          * @private
2374          */
2375         function safeUnicodeInput( $request, $field ) {
2376                 $text = rtrim( $request->getText( $field ) );
2377                 return $request->getBool( 'safemode' )
2378                         ? $this->unmakesafe( $text )
2379                         : $text;
2380         }
2381
2382         /**
2383          * Filter an output field through a Unicode armoring process if it is
2384          * going to an old browser with known broken Unicode editing issues.
2385          *
2386          * @param string $text
2387          * @return string
2388          * @private
2389          */
2390         function safeUnicodeOutput( $text ) {
2391                 global $wgContLang;
2392                 $codedText = $wgContLang->recodeForEdit( $text );
2393                 return $this->checkUnicodeCompliantBrowser()
2394                         ? $codedText
2395                         : $this->makesafe( $codedText );
2396         }
2397
2398         /**
2399          * A number of web browsers are known to corrupt non-ASCII characters
2400          * in a UTF-8 text editing environment. To protect against this,
2401          * detected browsers will be served an armored version of the text,
2402          * with non-ASCII chars converted to numeric HTML character references.
2403          *
2404          * Preexisting such character references will have a 0 added to them
2405          * to ensure that round-trips do not alter the original data.
2406          *
2407          * @param string $invalue
2408          * @return string
2409          * @private
2410          */
2411         function makesafe( $invalue ) {
2412                 // Armor existing references for reversability.
2413                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
2414
2415                 $bytesleft = 0;
2416                 $result = "";
2417                 $working = 0;
2418                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
2419                         $bytevalue = ord( $invalue{$i} );
2420                         if ( $bytevalue <= 0x7F ) { //0xxx xxxx
2421                                 $result .= chr( $bytevalue );
2422                                 $bytesleft = 0;
2423                         } elseif ( $bytevalue <= 0xBF ) { //10xx xxxx
2424                                 $working = $working << 6;
2425                                 $working += ($bytevalue & 0x3F);
2426                                 $bytesleft--;
2427                                 if ( $bytesleft <= 0 ) {
2428                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
2429                                 }
2430                         } elseif ( $bytevalue <= 0xDF ) { //110x xxxx
2431                                 $working = $bytevalue & 0x1F;
2432                                 $bytesleft = 1;
2433                         } elseif ( $bytevalue <= 0xEF ) { //1110 xxxx
2434                                 $working = $bytevalue & 0x0F;
2435                                 $bytesleft = 2;
2436                         } else { //1111 0xxx
2437                                 $working = $bytevalue & 0x07;
2438                                 $bytesleft = 3;
2439                         }
2440                 }
2441                 return $result;
2442         }
2443
2444         /**
2445          * Reverse the previously applied transliteration of non-ASCII characters
2446          * back to UTF-8. Used to protect data from corruption by broken web browsers
2447          * as listed in $wgBrowserBlackList.
2448          *
2449          * @param string $invalue
2450          * @return string
2451          * @private
2452          */
2453         function unmakesafe( $invalue ) {
2454                 $result = "";
2455                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
2456                         if ( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue{$i+3} != '0' ) ) {
2457                                 $i += 3;
2458                                 $hexstring = "";
2459                                 do {
2460                                         $hexstring .= $invalue{$i};
2461                                         $i++;
2462                                 } while( ctype_xdigit( $invalue{$i} ) && ( $i < strlen( $invalue ) ) );
2463
2464                                 // Do some sanity checks. These aren't needed for reversability,
2465                                 // but should help keep the breakage down if the editor
2466                                 // breaks one of the entities whilst editing.
2467                                 if ( (substr($invalue,$i,1)==";") and (strlen($hexstring) <= 6) ) {
2468                                         $codepoint = hexdec($hexstring);
2469                                         $result .= codepointToUtf8( $codepoint );
2470                                 } else {
2471                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
2472                                 }
2473                         } else {
2474                                 $result .= substr( $invalue, $i, 1 );
2475                         }
2476                 }
2477                 // reverse the transform that we made for reversability reasons.
2478                 return strtr( $result, array( "&#x0" => "&#x" ) );
2479         }
2480
2481         function noCreatePermission() {
2482                 global $wgOut;
2483                 $wgOut->setPageTitle( wfMsg( 'nocreatetitle' ) );
2484                 $wgOut->addWikiMsg( 'nocreatetext' );
2485         }
2486
2487         /**
2488          * If there are rows in the deletion/move log for this page, show them,
2489          * along with a nice little note for the user
2490          *
2491          * @param OutputPage $out
2492          */
2493         protected function showLogs( $out ) {
2494                 global $wgUser;
2495                 $loglist = new LogEventsList( $wgUser->getSkin(), $out );
2496                 $pager = new LogPager( $loglist, array('move', 'delete'), false,
2497                         $this->mTitle->getPrefixedText(), '', array( "log_action != 'revision'" ) );
2498
2499                 $count = $pager->getNumRows();
2500                 if ( $count > 0 ) {
2501                         $pager->mLimit = 10;
2502                         $out->addHTML( '<div class="mw-warning-with-logexcerpt">' );
2503                         $out->addWikiMsg( 'recreate-moveddeleted-warn' );
2504                         $out->addHTML(
2505                                 $loglist->beginLogEventsList() .
2506                                 $pager->getBody() .
2507                                 $loglist->endLogEventsList()
2508                         );
2509                         if($count > 10){
2510                                 $out->addHTML( $wgUser->getSkin()->link(
2511                                         SpecialPage::getTitleFor( 'Log' ),
2512                                         wfMsgHtml( 'log-fulllog' ),
2513                                         array(),
2514                                         array( 'page' => $this->mTitle->getPrefixedText() ) ) );
2515                         }
2516                         $out->addHTML( '</div>' );
2517                         return true;
2518                 }
2519
2520                 return false;
2521         }
2522
2523         /**
2524          * Attempt submission
2525          * @return bool false if output is done, true if the rest of the form should be displayed
2526          */
2527         function attemptSave() {
2528                 global $wgUser, $wgOut, $wgTitle, $wgRequest;
2529
2530                 $resultDetails = false;
2531                 # Allow bots to exempt some edits from bot flagging
2532                 $bot = $wgUser->isAllowed('bot') && $wgRequest->getBool('bot',true);
2533                 $value = $this->internalAttemptSave( $resultDetails, $bot );
2534
2535                 if ( $value == self::AS_SUCCESS_UPDATE || $value == self::AS_SUCCESS_NEW_ARTICLE ) {
2536                         $this->didSave = true;
2537                 }
2538
2539                 switch ($value) {
2540                         case self::AS_HOOK_ERROR_EXPECTED:
2541                         case self::AS_CONTENT_TOO_BIG:
2542                         case self::AS_ARTICLE_WAS_DELETED:
2543                         case self::AS_CONFLICT_DETECTED:
2544                         case self::AS_SUMMARY_NEEDED:
2545                         case self::AS_TEXTBOX_EMPTY:
2546                         case self::AS_MAX_ARTICLE_SIZE_EXCEEDED:
2547                         case self::AS_END:
2548                                 return true;
2549
2550                         case self::AS_HOOK_ERROR:
2551                         case self::AS_FILTERING:
2552                         case self::AS_SUCCESS_NEW_ARTICLE:
2553                         case self::AS_SUCCESS_UPDATE:
2554                                 return false;
2555
2556                         case self::AS_SPAM_ERROR:
2557                                 $this->spamPage ( $resultDetails['spam'] );
2558                                 return false;
2559
2560                         case self::AS_BLOCKED_PAGE_FOR_USER:
2561                                 $this->blockedPage();
2562                                 return false;
2563
2564                         case self::AS_IMAGE_REDIRECT_ANON:
2565                                 $wgOut->showErrorPage( 'uploadnologin', 'uploadnologintext' );
2566                                 return false;
2567
2568                         case self::AS_READ_ONLY_PAGE_ANON:
2569                                 $this->userNotLoggedInPage();
2570                                 return false;
2571
2572                         case self::AS_READ_ONLY_PAGE_LOGGED:
2573                         case self::AS_READ_ONLY_PAGE:
2574                                 $wgOut->readOnlyPage();
2575                                 return false;
2576
2577                         case self::AS_RATE_LIMITED:
2578                                 $wgOut->rateLimited();
2579                                 return false;
2580
2581                         case self::AS_NO_CREATE_PERMISSION;
2582                                 $this->noCreatePermission();
2583                                 return;
2584
2585                         case self::AS_BLANK_ARTICLE:
2586                                 $wgOut->redirect( $wgTitle->getFullURL() );
2587                                 return false;
2588
2589                         case self::AS_IMAGE_REDIRECT_LOGGED:
2590                                 $wgOut->permissionRequired( 'upload' );
2591                                 return false;
2592                 }
2593         }
2594
2595         function getBaseRevision() {
2596                 if ( $this->mBaseRevision == false ) {
2597                         $db = wfGetDB( DB_MASTER );
2598                         $baseRevision = Revision::loadFromTimestamp(
2599                                 $db, $this->mTitle, $this->edittime );
2600                         return $this->mBaseRevision = $baseRevision;
2601                 } else {
2602                         return $this->mBaseRevision;
2603                 }
2604         }
2605 }