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         /**
 116          * Fetch initial editing page content.
 117          * @private
 118          */
 119         function getContent( $def_text = '' ) {
 120                 global $wgOut, $wgRequest, $wgParser, $wgContLang, $wgMessageCache;
 121
 122                 wfProfileIn( __METHOD__ );
 123                 # Get variables from query string :P
 124                 $section = $wgRequest->getVal( 'section' );
 125                 $preload = $wgRequest->getVal( 'preload' );
 126                 $undoafter = $wgRequest->getVal( 'undoafter' );
 127                 $undo = $wgRequest->getVal( 'undo' );
 128
 129                 $text = '';
 130                 // For message page not locally set, use the i18n message.
 131                 // For other non-existent articles, use preload text if any.
 132                 if ( !$this->mTitle->exists() ) {
 133                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
 134                                 # If this is a system message, get the default text.
 135                                 list( $message, $lang ) = $wgMessageCache->figureMessage( $wgContLang->lcfirst( $this->mTitle->getText() ) );
 136                                 $wgMessageCache->loadAllMessages( $lang );
 137                                 $text = wfMsgGetKey( $message, false, $lang, false );
 138                                 if( wfEmptyMsg( $message, $text ) )
 139                                         $text = '';
 140                         } else {
 141                                 # If requested, preload some text.
 142                                 $text = $this->getPreloadedText( $preload );
 143                         }
 144                 // For existing pages, get text based on "undo" or section parameters.
 145                 } else {
 146                         $text = $this->mArticle->getContent();
 147                         if ( $undo > 0 && $undoafter > 0 && $undo < $undoafter ) {
 148                                 # If they got undoafter and undo round the wrong way, switch them
 149                                 list( $undo, $undoafter ) = array( $undoafter, $undo );
 150                         }
 151                         if ( $undo > 0 && $undo > $undoafter ) {
 152                                 # Undoing a specific edit overrides section editing; section-editing
 153                                 # doesn't work with undoing.
 154                                 if ( $undoafter ) {
 155                                         $undorev = Revision::newFromId($undo);
 156                                         $oldrev = Revision::newFromId($undoafter);
 157                                 } else {
 158                                         $undorev = Revision::newFromId($undo);
 159                                         $oldrev = $undorev ? $undorev->getPrevious() : null;
 160                                 }
 161
 162                                 # Sanity check, make sure it's the right page,
 163                                 # the revisions exist and they were not deleted.
 164                                 # Otherwise, $text will be left as-is.
 165                                 if ( !is_null( $undorev ) && !is_null( $oldrev ) &&
 166                                         $undorev->getPage() == $oldrev->getPage() &&
 167                                         $undorev->getPage() == $this->mArticle->getID() &&
 168                                         !$undorev->isDeleted( Revision::DELETED_TEXT ) &&
 169                                         !$oldrev->isDeleted( Revision::DELETED_TEXT ) ) {
 170
 171                                         $undotext = $this->mArticle->getUndoText( $undorev, $oldrev );
 172                                         if ( $undotext === false ) {
 173                                                 # Warn the user that something went wrong
 174                                                 $this->editFormPageTop .= $wgOut->parse( '<div class="error mw-undo-failure">' . wfMsgNoTrans( 'undo-failure' ) . '</div>' );
 175                                         } else {
 176                                                 $text = $undotext;
 177                                                 # Inform the user of our success and set an automatic edit summary
 178                                                 $this->editFormPageTop .= $wgOut->parse( '<div class="mw-undo-success">' . wfMsgNoTrans( 'undo-success' ) . '</div>' );
 179                                                 $firstrev = $oldrev->getNext();
 180                                                 # If we just undid one rev, use an autosummary
 181                                                 if ( $firstrev->mId == $undo ) {
 182                                                         $this->summary = wfMsgForContent( 'undo-summary', $undo, $undorev->getUserText() );
 183                                                         $this->undidRev = $undo;
 184                                                 }
 185                                                 $this->formtype = 'diff';
 186                                         }
 187                                 } else {
 188                                         // Failed basic sanity checks.
 189                                         // Older revisions may have been removed since the link
 190                                         // was created, or we may simply have got bogus input.
 191                                         $this->editFormPageTop .= $wgOut->parse( '<div class="error mw-undo-norev">' . wfMsgNoTrans( 'undo-norev' ) . '</div>' );
 192                                 }
 193                         } else if ( $section != '' ) {
 194                                 if ( $section == 'new' ) {
 195                                         $text = $this->getPreloadedText( $preload );
 196                                 } else {
 197                                         $text = $wgParser->getSection( $text, $section, $def_text );
 198                                 }
 199                         }
 200                 }
 201
 202                 wfProfileOut( __METHOD__ );
 203                 return $text;
 204         }
 205
 206         /** Use this method before edit() to preload some text into the edit box */
 207         public function setPreloadedText( $text ) {
 208                 $this->mPreloadText = $text;
 209         }
 210
 211         /**
 212          * Get the contents of a page from its title and remove includeonly tags
 213          *
 214          * @param $preload String: the title of the page.
 215          * @return string The contents of the page.
 216          */
 217         protected function getPreloadedText( $preload ) {
 218                 if ( !empty($this->mPreloadText) ) {
 219                         return $this->mPreloadText;
 220                 } elseif ( $preload === '' ) {
 221                         return '';
 222                 } else {
 223                         $preloadTitle = Title::newFromText( $preload );
 224                         if ( isset( $preloadTitle ) && $preloadTitle->userCanRead() ) {
 225                                 $rev = Revision::newFromTitle($preloadTitle);
 226                                 if ( is_object( $rev ) ) {
 227                                         $text = $rev->getText();
 228                                         // TODO FIXME: AAAAAAAAAAA, this shouldn't be implementing
 229                                         // its own mini-parser! -ævar
 230                                         $text = preg_replace( '~</?includeonly>~', '', $text );
 231                                         return $text;
 232                                 } else
 233                                         return '';
 234                         }
 235                 }
 236         }
 237
 238         /**
 239          * This is the function that extracts metadata from the article body on the first view.
 240          * To turn the feature on, set $wgUseMetadataEdit = true ; in LocalSettings
 241          *  and set $wgMetadataWhitelist to the *full* title of the template whitelist
 242          */
 243         function extractMetaDataFromArticle () {
 244                 global $wgUseMetadataEdit, $wgMetadataWhitelist, $wgContLang;
 245                 $this->mMetaData = '';
 246                 if ( !$wgUseMetadataEdit ) return;
 247                 if ( $wgMetadataWhitelist == '' ) return;
 248                 $s = '';
 249                 $t = $this->getContent();
 250
 251                 # MISSING : <nowiki> filtering
 252
 253                 # Categories and language links
 254                 $t = explode ( "\n" , $t );
 255                 $catlow = strtolower ( $wgContLang->getNsText( NS_CATEGORY ) );
 256                 $cat = $ll = array();
 257                 foreach ( $t AS $key => $x ) {
 258                         $y = trim ( strtolower ( $x ) );
 259                         while ( substr ( $y , 0 , 2 ) == '[[' ) {
 260                                 $y = explode ( ']]' , trim ( $x ) );
 261                                 $first = array_shift ( $y );
 262                                 $first = explode ( ':' , $first );
 263                                 $ns = array_shift ( $first );
 264                                 $ns = trim ( str_replace ( '[' , '' , $ns ) );
 265                                 if ( $wgContLang->getLanguageName( $ns ) || strtolower ( $ns ) == $catlow ) {
 266                                         $add = '[[' . $ns . ':' . implode ( ':' , $first ) . ']]';
 267                                         if ( strtolower ( $ns ) == $catlow ) $cat[] = $add;
 268                                         else $ll[] = $add;
 269                                         $x = implode ( ']]' , $y );
 270                                         $t[$key] = $x;
 271                                         $y = trim ( strtolower ( $x ) );
 272                                 } else {
 273                                         $x = implode ( ']]' , $y );
 274                                         $y = trim ( strtolower ( $x ) );
 275                                 }
 276                         }
 277                 }
 278                 if ( count ( $cat ) ) $s .= implode ( ' ' , $cat ) . "\n";
 279                 if ( count ( $ll ) ) $s .= implode ( ' ' , $ll ) . "\n";
 280                 $t = implode ( "\n" , $t );
 281
 282                 # Load whitelist
 283                 $sat = array () ; # stand-alone-templates; must be lowercase
 284                 $wl_title = Title::newFromText ( $wgMetadataWhitelist );
 285                 $wl_article = new Article ( $wl_title );
 286                 $wl = explode ( "\n" , $wl_article->getContent() );
 287                 foreach ( $wl AS $x ) {
 288                         $isentry = false;
 289                         $x = trim ( $x );
 290                         while ( substr ( $x , 0 , 1 ) == '*' ) {
 291                                 $isentry = true;
 292                                 $x = trim ( substr ( $x , 1 ) );
 293                         }
 294                         if ( $isentry ) {
 295                                 $sat[] = strtolower ( $x );
 296                         }
 297
 298                 }
 299
 300                 # Templates, but only some
 301                 $t = explode ( '{{' , $t );
 302                 $tl = array () ;
 303                 foreach ( $t AS $key => $x ) {
 304                         $y = explode ( '}}' , $x , 2 );
 305                         if ( count ( $y ) == 2 ) {
 306                                 $z = $y[0];
 307                                 $z = explode ( '|' , $z );
 308                                 $tn = array_shift ( $z );
 309                                 if ( in_array ( strtolower ( $tn ) , $sat ) ) {
 310                                         $tl[] = '{{' . $y[0] . '}}';
 311                                         $t[$key] = $y[1];
 312                                         $y = explode ( '}}' , $y[1] , 2 );
 313                                 }
 314                                 else $t[$key] = '{{' . $x;
 315                         }
 316                         else if ( $key != 0 ) $t[$key] = '{{' . $x;
 317                         else $t[$key] = $x;
 318                 }
 319                 if ( count ( $tl ) ) $s .= implode ( ' ' , $tl );
 320                 $t = implode ( '' , $t );
 321
 322                 $t = str_replace ( "\n\n\n" , "\n" , $t );
 323                 $this->mArticle->mContent = $t;
 324                 $this->mMetaData = $s;
 325         }
 326
 327         /*
 328          * Check if a page was deleted while the user was editing it, before submit.
 329          * Note that we rely on the logging table, which hasn't been always there,
 330          * but that doesn't matter, because this only applies to brand new
 331          * deletes.
 332          */
 333         protected function wasDeletedSinceLastEdit() {
 334                 if ( $this->deletedSinceEdit )
 335                         return true;
 336                 if ( $this->mTitle->isDeletedQuick() ) {
 337                         $this->lastDelete = $this->getLastDelete();
 338                         if ( $this->lastDelete ) {
 339                                 $deleteTime = wfTimestamp( TS_MW, $this->lastDelete->log_timestamp );
 340                                 if ( $deleteTime > $this->starttime ) {
 341                                         $this->deletedSinceEdit = true;
 342                                 }
 343                         }
 344                 }
 345                 return $this->deletedSinceEdit;
 346         }
 347
 348         function submit() {
 349                 $this->edit();
 350         }
 351
 352         /**
 353          * This is the function that gets called for "action=edit". It
 354          * sets up various member variables, then passes execution to
 355          * another function, usually showEditForm()
 356          *
 357          * The edit form is self-submitting, so that when things like
 358          * preview and edit conflicts occur, we get the same form back
 359          * with the extra stuff added.  Only when the final submission
 360          * is made and all is well do we actually save and redirect to
 361          * the newly-edited page.
 362          */
 363         function edit() {
 364                 global $wgOut, $wgRequest, $wgEnableJS2system;
 365                 // Allow extensions to modify/prevent this form or submission
 366                 if ( !wfRunHooks( 'AlternateEdit', array( &$this ) ) ) {
 367                         return;
 368                 }
 369
 370                 wfProfileIn( __METHOD__ );
 371                 wfDebug( __METHOD__.": enter\n" );
 372
 373                 // This is not an article
 374                 $wgOut->setArticleFlag( false );
 375
 376                 $this->importFormData( $wgRequest );
 377                 $this->firsttime = false;
 378
 379                 if ( $this->live ) {
 380                         $this->livePreview();
 381                         wfProfileOut( __METHOD__ );
 382                         return;
 383                 }
 384
 385                 if ( wfReadOnly() && $this->save ) {
 386                                 // Force preview
 387                                 $this->save = false;
 388                                 $this->preview = true;
 389                 }
 390
 391                 $wgOut->addScriptFile( 'edit.js' );
 392
 393                 if($wgEnableJS2system)
 394                     $wgOut->addScriptClass( 'editPage' );
 395
 396                 $permErrors = $this->getEditPermissionErrors();
 397                 if ( $permErrors ) {
 398                         wfDebug( __METHOD__.": User can't edit\n" );
 399                         $this->readOnlyPage( $this->getContent(), true, $permErrors, 'edit' );
 400                         wfProfileOut( __METHOD__ );
 401                         return;
 402                 } else {
 403                         if ( $this->save ) {
 404                                 $this->formtype = 'save';
 405                         } else if ( $this->preview ) {
 406                                 $this->formtype = 'preview';
 407                         } else if ( $this->diff ) {
 408                                 $this->formtype = 'diff';
 409                         } else { # First time through
 410                                 $this->firsttime = true;
 411                                 if ( $this->previewOnOpen() ) {
 412                                         $this->formtype = 'preview';
 413                                 } else {
 414                                         $this->extractMetaDataFromArticle () ;
 415                                         $this->formtype = 'initial';
 416                                 }
 417                         }
 418                 }
 419
 420                 // If they used redlink=1 and the page exists, redirect to the main article
 421                 if ( $wgRequest->getBool( 'redlink' ) && $this->mTitle->exists() ) {
 422                         $wgOut->redirect( $this->mTitle->getFullURL() );
 423                 }
 424
 425                 wfProfileIn( __METHOD__."-business-end" );
 426
 427                 $this->isConflict = false;
 428                 // css / js subpages of user pages get a special treatment
 429                 $this->isCssJsSubpage      = $this->mTitle->isCssJsSubpage();
 430                 $this->isValidCssJsSubpage = $this->mTitle->isValidCssJsSubpage();
 431
 432                 # Show applicable editing introductions
 433                 if ( $this->formtype == 'initial' || $this->firsttime )
 434                         $this->showIntro();
 435
 436                 if ( $this->mTitle->isTalkPage() ) {
 437                         $wgOut->addWikiMsg( 'talkpagetext' );
 438                 }
 439
 440                 # Optional notices on a per-namespace and per-page basis
 441                 $editnotice_ns   = 'editnotice-'.$this->mTitle->getNamespace();
 442                 if ( !wfEmptyMsg( $editnotice_ns, wfMsgForContent( $editnotice_ns ) ) ) {
 443                         $wgOut->addWikiText( wfMsgForContent( $editnotice_ns )  );
 444                 }
 445                 if ( MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
 446                         $parts = explode( '/', $this->mTitle->getDBkey() );
 447                         $editnotice_base = $editnotice_ns;
 448                         while ( count( $parts ) > 0 ) {
 449                                 $editnotice_base .= '-'.array_shift( $parts );
 450                                 if ( !wfEmptyMsg( $editnotice_base, wfMsgForContent( $editnotice_base ) ) ) {
 451                                         $wgOut->addWikiText( wfMsgForContent( $editnotice_base )  );
 452                                 }
 453                         }
 454                 }
 455
 456                 # Attempt submission here.  This will check for edit conflicts,
 457                 # and redundantly check for locked database, blocked IPs, etc.
 458                 # that edit() already checked just in case someone tries to sneak
 459                 # in the back door with a hand-edited submission URL.
 460
 461                 if ( 'save' == $this->formtype ) {
 462                         if ( !$this->attemptSave() ) {
 463                                 wfProfileOut( __METHOD__."-business-end" );
 464                                 wfProfileOut( __METHOD__ );
 465                                 return;
 466                         }
 467                 }
 468
 469                 # First time through: get contents, set time for conflict
 470                 # checking, etc.
 471                 if ( 'initial' == $this->formtype || $this->firsttime ) {
 472                         if ( $this->initialiseForm() === false) {
 473                                 $this->noSuchSectionPage();
 474                                 wfProfileOut( __METHOD__."-business-end" );
 475                                 wfProfileOut( __METHOD__ );
 476                                 return;
 477                         }
 478                         if ( !$this->mTitle->getArticleId() )
 479                                 wfRunHooks( 'EditFormPreloadText', array( &$this->textbox1, &$this->mTitle ) );
 480                 }
 481
 482                 $this->showEditForm();
 483                 wfProfileOut( __METHOD__."-business-end" );
 484                 wfProfileOut( __METHOD__ );
 485         }
 486
 487         protected function getEditPermissionErrors() {
 488                 global $wgUser;
 489                 $permErrors = $this->mTitle->getUserPermissionsErrors( 'edit', $wgUser );
 490                 # Can this title be created?
 491                 if ( !$this->mTitle->exists() ) {
 492                         $permErrors = array_merge( $permErrors,
 493                                 wfArrayDiff2( $this->mTitle->getUserPermissionsErrors( 'create', $wgUser ), $permErrors ) );
 494                 }
 495                 # Ignore some permissions errors when a user is just previewing/viewing diffs
 496                 $remove = array();
 497                 foreach( $permErrors as $error ) {
 498                         if ( ($this->preview || $this->diff) &&
 499                                 ($error[0] == 'blockedtext' || $error[0] == 'autoblockedtext') )
 500                         {
 501                                 $remove[] = $error;
 502                         }
 503                 }
 504                 $permErrors = wfArrayDiff2( $permErrors, $remove );
 505                 return $permErrors;
 506         }
 507
 508         /**
 509          * Show a read-only error
 510          * Parameters are the same as OutputPage:readOnlyPage()
 511          * Redirect to the article page if redlink=1
 512          */
 513         function readOnlyPage( $source = null, $protected = false, $reasons = array(), $action = null ) {
 514                 global $wgRequest, $wgOut;
 515                 if ( $wgRequest->getBool( 'redlink' ) ) {
 516                         // The edit page was reached via a red link.
 517                         // Redirect to the article page and let them click the edit tab if
 518                         // they really want a permission error.
 519                         $wgOut->redirect( $this->mTitle->getFullUrl() );
 520                 } else {
 521                         $wgOut->readOnlyPage( $source, $protected, $reasons, $action );
 522                 }
 523         }
 524
 525         /**
 526          * Should we show a preview when the edit form is first shown?
 527          *
 528          * @return bool
 529          */
 530         protected function previewOnOpen() {
 531                 global $wgRequest, $wgUser;
 532                 if ( $wgRequest->getVal( 'preview' ) == 'yes' ) {
 533                         // Explicit override from request
 534                         return true;
 535                 } elseif ( $wgRequest->getVal( 'preview' ) == 'no' ) {
 536                         // Explicit override from request
 537                         return false;
 538                 } elseif ( $this->section == 'new' ) {
 539                         // Nothing *to* preview for new sections
 540                         return false;
 541                 } elseif ( ( $wgRequest->getVal( 'preload' ) !== null || $this->mTitle->exists() ) && $wgUser->getOption( 'previewonfirst' ) ) {
 542                         // Standard preference behaviour
 543                         return true;
 544                 } elseif ( !$this->mTitle->exists() && $this->mTitle->getNamespace() == NS_CATEGORY ) {
 545                         // Categories are special
 546                         return true;
 547                 } else {
 548                         return false;
 549                 }
 550         }
 551
 552         /**
 553          * @todo document
 554          * @param $request
 555          */
 556         function importFormData( &$request ) {
 557                 global $wgLang, $wgUser;
 558                 $fname = 'EditPage::importFormData';
 559                 wfProfileIn( $fname );
 560
 561                 # Section edit can come from either the form or a link
 562                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 563
 564                 if ( $request->wasPosted() ) {
 565                         # These fields need to be checked for encoding.
 566                         # Also remove trailing whitespace, but don't remove _initial_
 567                         # whitespace from the text boxes. This may be significant formatting.
 568                         $this->textbox1 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
 569                         $this->textbox2 = $this->safeUnicodeInput( $request, 'wpTextbox2' );
 570                         $this->mMetaData = rtrim( $request->getText( 'metadata' ) );
 571                         # Truncate for whole multibyte characters. +5 bytes for ellipsis
 572                         $this->summary = $wgLang->truncate( $request->getText( 'wpSummary' ), 250, '' );
 573
 574                         # Remove extra headings from summaries and new sections.
 575                         $this->summary = preg_replace('/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->summary);
 576
 577                         $this->edittime = $request->getVal( 'wpEdittime' );
 578                         $this->starttime = $request->getVal( 'wpStarttime' );
 579
 580                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 581
 582                         if ( is_null( $this->edittime ) ) {
 583                                 # If the form is incomplete, force to preview.
 584                                 wfDebug( "$fname: Form data appears to be incomplete\n" );
 585                                 wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
 586                                 $this->preview = true;
 587                         } else {
 588                                 /* Fallback for live preview */
 589                                 $this->preview = $request->getCheck( 'wpPreview' ) || $request->getCheck( 'wpLivePreview' );
 590                                 $this->diff = $request->getCheck( 'wpDiff' );
 591
 592                                 // Remember whether a save was requested, so we can indicate
 593                                 // if we forced preview due to session failure.
 594                                 $this->mTriedSave = !$this->preview;
 595
 596                                 if ( $this->tokenOk( $request ) ) {
 597                                         # Some browsers will not report any submit button
 598                                         # if the user hits enter in the comment box.
 599                                         # The unmarked state will be assumed to be a save,
 600                                         # if the form seems otherwise complete.
 601                                         wfDebug( "$fname: Passed token check.\n" );
 602                                 } else if ( $this->diff ) {
 603                                         # Failed token check, but only requested "Show Changes".
 604                                         wfDebug( "$fname: Failed token check; Show Changes requested.\n" );
 605                                 } else {
 606                                         # Page might be a hack attempt posted from
 607                                         # an external site. Preview instead of saving.
 608                                         wfDebug( "$fname: Failed token check; forcing preview\n" );
 609                                         $this->preview = true;
 610                                 }
 611                         }
 612                         $this->save = !$this->preview && !$this->diff;
 613                         if ( !preg_match( '/^\d{14}$/', $this->edittime )) {
 614                                 $this->edittime = null;
 615                         }
 616
 617                         if ( !preg_match( '/^\d{14}$/', $this->starttime )) {
 618                                 $this->starttime = null;
 619                         }
 620
 621                         $this->recreate  = $request->getCheck( 'wpRecreate' );
 622
 623                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 624                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 625
 626                         # Don't force edit summaries when a user is editing their own user or talk page
 627                         if ( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK ) &&
 628                                 $this->mTitle->getText() == $wgUser->getName() )
 629                         {
 630                                 $this->allowBlankSummary = true;
 631                         } else {
 632                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' ) || !$wgUser->getOption( 'forceeditsummary');
 633                         }
 634
 635                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
 636                 } else {
 637                         # Not a posted form? Start with nothing.
 638                         wfDebug( "$fname: Not a posted form.\n" );
 639                         $this->textbox1  = '';
 640                         $this->textbox2  = '';
 641                         $this->mMetaData = '';
 642                         $this->summary   = '';
 643                         $this->edittime  = '';
 644                         $this->starttime = wfTimestampNow();
 645                         $this->edit      = false;
 646                         $this->preview   = false;
 647                         $this->save      = false;
 648                         $this->diff      = false;
 649                         $this->minoredit = false;
 650                         $this->watchthis = false;
 651                         $this->recreate  = false;
 652
 653                         if ( $this->section == 'new' && $request->getVal( 'preloadtitle' ) ) {
 654                                 $this->summary = $request->getVal( 'preloadtitle' );
 655                         }
 656                         elseif ( $this->section != 'new' && $request->getVal( 'summary' ) ) {
 657                                 $this->summary = $request->getText( 'summary' );
 658                         }
 659
 660                         if ( $request->getVal( 'minor' ) ) {
 661                                 $this->minoredit = true;
 662                         }
 663                 }
 664
 665                 // FIXME: unused variable?
 666                 $this->oldid = $request->getInt( 'oldid' );
 667
 668                 $this->live = $request->getCheck( 'live' );
 669                 $this->editintro = $request->getText( 'editintro' );
 670
 671                 wfProfileOut( $fname );
 672
 673                 // Allow extensions to modify form data
 674                 wfRunHooks( 'EditPage::importFormData', array( &$this, $request ) );
 675         }
 676
 677         /**
 678          * Make sure the form isn't faking a user's credentials.
 679          *
 680          * @param $request WebRequest
 681          * @return bool
 682          * @private
 683          */
 684         function tokenOk( &$request ) {
 685                 global $wgUser;
 686                 $token = $request->getVal( 'wpEditToken' );
 687                 $this->mTokenOk = $wgUser->matchEditToken( $token );
 688                 $this->mTokenOkExceptSuffix = $wgUser->matchEditTokenNoSuffix( $token );
 689                 return $this->mTokenOk;
 690         }
 691
 692         /**
 693          * Show all applicable editing introductions
 694          */
 695         protected function showIntro() {
 696                 global $wgOut, $wgUser;
 697                 if ( $this->suppressIntro ) {
 698                         return;
 699                 }
 700
 701                 $namespace = $this->mTitle->getNamespace();
 702
 703                 if ( $namespace == NS_MEDIAWIKI ) {
 704                         # Show a warning if editing an interface message
 705                         $wgOut->wrapWikiMsg( "<div class='mw-editinginterface'>\n$1</div>", 'editinginterface' );
 706                 }
 707
 708                 # Show a warning message when someone creates/edits a user (talk) page but the user does not exists
 709                 if ( $namespace == NS_USER || $namespace == NS_USER_TALK ) {
 710                         $parts = explode( '/', $this->mTitle->getText(), 2 );
 711                         $username = $parts[0];
 712                         $id = User::idFromName( $username );
 713                         $ip = User::isIP( $username );
 714                         if ( $id == 0 && !$ip ) {
 715                                 $wgOut->wrapWikiMsg( '<div class="mw-userpage-userdoesnotexist error">$1</div>',
 716                                         array( 'userpage-userdoesnotexist', $username ) );
 717                         }
 718                 }
 719                 # Try to add a custom edit intro, or use the standard one if this is not possible.
 720                 if ( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
 721                         if ( $wgUser->isLoggedIn() ) {
 722                                 $wgOut->wrapWikiMsg( '<div class="mw-newarticletext">$1</div>', 'newarticletext' );
 723                         } else {
 724                                 $wgOut->wrapWikiMsg( '<div class="mw-newarticletextanon">$1</div>', 'newarticletextanon' );
 725                         }
 726                 }
 727                 # Give a notice if the user is editing a deleted/moved page...
 728                 if ( !$this->mTitle->exists() ) {
 729                         $this->showLogs( $wgOut );
 730                 }
 731         }
 732
 733         /**
 734          * Attempt to show a custom editing introduction, if supplied
 735          *
 736          * @return bool
 737          */
 738         protected function showCustomIntro() {
 739                 if ( $this->editintro ) {
 740                         $title = Title::newFromText( $this->editintro );
 741                         if ( $title instanceof Title && $title->exists() && $title->userCanRead() ) {
 742                                 global $wgOut;
 743                                 $revision = Revision::newFromTitle( $title );
 744                                 $wgOut->addWikiTextTitleTidy( $revision->getText(), $this->mTitle );
 745                                 return true;
 746                         } else {
 747                                 return false;
 748                         }
 749                 } else {
 750                         return false;
 751                 }
 752         }
 753
 754         /**
 755          * Attempt submission (no UI)
 756          * @return one of the constants describing the result
 757          */
 758         function internalAttemptSave( &$result, $bot = false ) {
 759                 global $wgFilterCallback, $wgUser, $wgOut, $wgParser;
 760                 global $wgMaxArticleSize;
 761
 762                 $fname = 'EditPage::attemptSave';
 763                 wfProfileIn( $fname );
 764                 wfProfileIn( "$fname-checks" );
 765
 766                 if ( !wfRunHooks( 'EditPage::attemptSave', array( &$this ) ) )
 767                 {
 768                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving\n" );
 769                         return self::AS_HOOK_ERROR;
 770                 }
 771
 772                 # Check image redirect
 773                 if ( $this->mTitle->getNamespace() == NS_FILE &&
 774                         Title::newFromRedirect( $this->textbox1 ) instanceof Title &&
 775                         !$wgUser->isAllowed( 'upload' ) ) {
 776                                 if ( $wgUser->isAnon() ) {
 777                                         return self::AS_IMAGE_REDIRECT_ANON;
 778                                 } else {
 779                                         return self::AS_IMAGE_REDIRECT_LOGGED;
 780                                 }
 781                 }
 782
 783                 # Reintegrate metadata
 784                 if ( $this->mMetaData != '' ) $this->textbox1 .= "\n" . $this->mMetaData ;
 785                 $this->mMetaData = '' ;
 786
 787                 # Check for spam
 788                 $match = self::matchSummarySpamRegex( $this->summary );
 789                 if ( $match === false ) {
 790                         $match = self::matchSpamRegex( $this->textbox1 );
 791                 }
 792                 if ( $match !== false ) {
 793                         $result['spam'] = $match;
 794                         $ip = wfGetIP();
 795                         $pdbk = $this->mTitle->getPrefixedDBkey();
 796                         $match = str_replace( "\n", '', $match );
 797                         wfDebugLog( 'SpamRegex', "$ip spam regex hit [[$pdbk]]: \"$match\"" );
 798                         wfProfileOut( "$fname-checks" );
 799                         wfProfileOut( $fname );
 800                         return self::AS_SPAM_ERROR;
 801                 }
 802                 if ( $wgFilterCallback && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section, $this->hookError, $this->summary ) ) {
 803                         # Error messages or other handling should be performed by the filter function
 804                         wfProfileOut( "$fname-checks" );
 805                         wfProfileOut( $fname );
 806                         return self::AS_FILTERING;
 807                 }
 808                 if ( !wfRunHooks( 'EditFilter', array( $this, $this->textbox1, $this->section, &$this->hookError, $this->summary ) ) ) {
 809                         # Error messages etc. could be handled within the hook...
 810                         wfProfileOut( "$fname-checks" );
 811                         wfProfileOut( $fname );
 812                         return self::AS_HOOK_ERROR;
 813                 } elseif ( $this->hookError != '' ) {
 814                         # ...or the hook could be expecting us to produce an error
 815                         wfProfileOut( "$fname-checks" );
 816                         wfProfileOut( $fname );
 817                         return self::AS_HOOK_ERROR_EXPECTED;
 818                 }
 819                 if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
 820                         # Check block state against master, thus 'false'.
 821                         wfProfileOut( "$fname-checks" );
 822                         wfProfileOut( $fname );
 823                         return self::AS_BLOCKED_PAGE_FOR_USER;
 824                 }
 825                 $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
 826                 if ( $this->kblength > $wgMaxArticleSize ) {
 827                         // Error will be displayed by showEditForm()
 828                         $this->tooBig = true;
 829                         wfProfileOut( "$fname-checks" );
 830                         wfProfileOut( $fname );
 831                         return self::AS_CONTENT_TOO_BIG;
 832                 }
 833
 834                 if ( !$wgUser->isAllowed('edit') ) {
 835                         if ( $wgUser->isAnon() ) {
 836                                 wfProfileOut( "$fname-checks" );
 837                                 wfProfileOut( $fname );
 838                                 return self::AS_READ_ONLY_PAGE_ANON;
 839                         }
 840                         else {
 841                                 wfProfileOut( "$fname-checks" );
 842                                 wfProfileOut( $fname );
 843                                 return self::AS_READ_ONLY_PAGE_LOGGED;
 844                         }
 845                 }
 846
 847                 if ( wfReadOnly() ) {
 848                         wfProfileOut( "$fname-checks" );
 849                         wfProfileOut( $fname );
 850                         return self::AS_READ_ONLY_PAGE;
 851                 }
 852                 if ( $wgUser->pingLimiter() ) {
 853                         wfProfileOut( "$fname-checks" );
 854                         wfProfileOut( $fname );
 855                         return self::AS_RATE_LIMITED;
 856                 }
 857
 858                 # If the article has been deleted while editing, don't save it without
 859                 # confirmation
 860                 if ( $this->wasDeletedSinceLastEdit() && !$this->recreate ) {
 861                         wfProfileOut( "$fname-checks" );
 862                         wfProfileOut( $fname );
 863                         return self::AS_ARTICLE_WAS_DELETED;
 864                 }
 865
 866                 wfProfileOut( "$fname-checks" );
 867
 868                 # If article is new, insert it.
 869                 $aid = $this->mTitle->getArticleID( GAID_FOR_UPDATE );
 870                 if ( 0 == $aid ) {
 871                         // Late check for create permission, just in case *PARANOIA*
 872                         if ( !$this->mTitle->userCan( 'create' ) ) {
 873                                 wfDebug( "$fname: no create permission\n" );
 874                                 wfProfileOut( $fname );
 875                                 return self::AS_NO_CREATE_PERMISSION;
 876                         }
 877
 878                         # Don't save a new article if it's blank.
 879                         if ( '' == $this->textbox1 ) {
 880                                 wfProfileOut( $fname );
 881                                 return self::AS_BLANK_ARTICLE;
 882                         }
 883
 884                         // Run post-section-merge edit filter
 885                         if ( !wfRunHooks( 'EditFilterMerged', array( $this, $this->textbox1, &$this->hookError, $this->summary ) ) ) {
 886                                 # Error messages etc. could be handled within the hook...
 887                                 wfProfileOut( $fname );
 888                                 return self::AS_HOOK_ERROR;
 889                         }
 890
 891                         # Handle the user preference to force summaries here. Check if it's not a redirect.
 892                         if ( !$this->allowBlankSummary && !Title::newFromRedirect( $this->textbox1 ) ) {
 893                                 if ( md5( $this->summary ) == $this->autoSumm ) {
 894                                         $this->missingSummary = true;
 895                                         wfProfileOut( $fname );
 896                                         return self::AS_SUMMARY_NEEDED;
 897                                 }
 898                         }
 899
 900                         $isComment = ( $this->section == 'new' );
 901
 902                         $this->mArticle->insertNewArticle( $this->textbox1, $this->summary,
 903                                 $this->minoredit, $this->watchthis, false, $isComment, $bot );
 904
 905                         wfProfileOut( $fname );
 906                         return self::AS_SUCCESS_NEW_ARTICLE;
 907                 }
 908
 909                 # Article exists. Check for edit conflict.
 910
 911                 $this->mArticle->clear(); # Force reload of dates, etc.
 912                 $this->mArticle->forUpdate( true ); # Lock the article
 913
 914                 wfDebug("timestamp: {$this->mArticle->getTimestamp()}, edittime: {$this->edittime}\n");
 915
 916                 if ( $this->mArticle->getTimestamp() != $this->edittime ) {
 917                         $this->isConflict = true;
 918                         if ( $this->section == 'new' ) {
 919                                 if ( $this->mArticle->getUserText() == $wgUser->getName() &&
 920                                         $this->mArticle->getComment() == $this->summary ) {
 921                                         // Probably a duplicate submission of a new comment.
 922                                         // This can happen when squid resends a request after
 923                                         // a timeout but the first one actually went through.
 924                                         wfDebug( "EditPage::editForm duplicate new section submission; trigger edit conflict!\n" );
 925                                 } else {
 926                                         // New comment; suppress conflict.
 927                                         $this->isConflict = false;
 928                                         wfDebug( "EditPage::editForm conflict suppressed; new section\n" );
 929                                 }
 930                         }
 931                 }
 932                 $userid = $wgUser->getId();
 933
 934                 # Suppress edit conflict with self, except for section edits where merging is required.
 935                 if ( $this->isConflict && $this->section == '' && $this->userWasLastToEdit($userid,$this->edittime) ) {
 936                         wfDebug( "EditPage::editForm Suppressing edit conflict, same user.\n" );
 937                         $this->isConflict = false;
 938                 }
 939
 940                 if ( $this->isConflict ) {
 941                         wfDebug( "EditPage::editForm conflict! getting section '$this->section' for time '$this->edittime' (article time '" .
 942                                 $this->mArticle->getTimestamp() . "')\n" );
 943                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary, $this->edittime );
 944                 } else {
 945                         wfDebug( "EditPage::editForm getting section '$this->section'\n" );
 946                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary );
 947                 }
 948                 if ( is_null( $text ) ) {
 949                         wfDebug( "EditPage::editForm activating conflict; section replace failed.\n" );
 950                         $this->isConflict = true;
 951                         $text = $this->textbox1; // do not try to merge here!
 952                 } else if ( $this->isConflict ) {
 953                         # Attempt merge
 954                         if ( $this->mergeChangesInto( $text ) ) {
 955                                 // Successful merge! Maybe we should tell the user the good news?
 956                                 $this->isConflict = false;
 957                                 wfDebug( "EditPage::editForm Suppressing edit conflict, successful merge.\n" );
 958                         } else {
 959                                 $this->section = '';
 960                                 $this->textbox1 = $text;
 961                                 wfDebug( "EditPage::editForm Keeping edit conflict, failed merge.\n" );
 962                         }
 963                 }
 964
 965                 if ( $this->isConflict ) {
 966                         wfProfileOut( $fname );
 967                         return self::AS_CONFLICT_DETECTED;
 968                 }
 969
 970                 $oldtext = $this->mArticle->getContent();
 971
 972                 // Run post-section-merge edit filter
 973                 if ( !wfRunHooks( 'EditFilterMerged', array( $this, $text, &$this->hookError, $this->summary ) ) ) {
 974                         # Error messages etc. could be handled within the hook...
 975                         wfProfileOut( $fname );
 976                         return self::AS_HOOK_ERROR;
 977                 }
 978
 979                 # Handle the user preference to force summaries here, but not for null edits
 980                 if ( $this->section != 'new' && !$this->allowBlankSummary && 0 != strcmp($oldtext,$text)
 981                         && !Title::newFromRedirect( $text ) ) # check if it's not a redirect
 982                 {
 983                         if ( md5( $this->summary ) == $this->autoSumm ) {
 984                                 $this->missingSummary = true;
 985                                 wfProfileOut( $fname );
 986                                 return self::AS_SUMMARY_NEEDED;
 987                         }
 988                 }
 989
 990                 # And a similar thing for new sections
 991                 if ( $this->section == 'new' && !$this->allowBlankSummary ) {
 992                         if (trim($this->summary) == '') {
 993                                 $this->missingSummary = true;
 994                                 wfProfileOut( $fname );
 995                                 return self::AS_SUMMARY_NEEDED;
 996                         }
 997                 }
 998
 999                 # All's well
1000                 wfProfileIn( "$fname-sectionanchor" );
1001                 $sectionanchor = '';
1002                 if ( $this->section == 'new' ) {
1003                         if ( $this->textbox1 == '' ) {
1004                                 $this->missingComment = true;
1005                                 return self::AS_TEXTBOX_EMPTY;
1006                         }
1007                         if ( $this->summary != '' ) {
1008                                 $sectionanchor = $wgParser->guessSectionNameFromWikiText( $this->summary );
1009                                 # This is a new section, so create a link to the new section
1010                                 # in the revision summary.
1011                                 $cleanSummary = $wgParser->stripSectionName( $this->summary );
1012                                 $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
1013                         }
1014                 } elseif ( $this->section != '' ) {
1015                         # Try to get a section anchor from the section source, redirect to edited section if header found
1016                         # XXX: might be better to integrate this into Article::replaceSection
1017                         # for duplicate heading checking and maybe parsing
1018                         $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
1019                         # we can't deal with anchors, includes, html etc in the header for now,
1020                         # headline would need to be parsed to improve this
1021                         if ( $hasmatch and strlen($matches[2]) > 0 ) {
1022                                 $sectionanchor = $wgParser->guessSectionNameFromWikiText( $matches[2] );
1023                         }
1024                 }
1025                 wfProfileOut( "$fname-sectionanchor" );
1026
1027                 // Save errors may fall down to the edit form, but we've now
1028                 // merged the section into full text. Clear the section field
1029                 // so that later submission of conflict forms won't try to
1030                 // replace that into a duplicated mess.
1031                 $this->textbox1 = $text;
1032                 $this->section = '';
1033
1034                 // Check for length errors again now that the section is merged in
1035                 $this->kblength = (int)(strlen( $text ) / 1024);
1036                 if ( $this->kblength > $wgMaxArticleSize ) {
1037                         $this->tooBig = true;
1038                         wfProfileOut( $fname );
1039                         return self::AS_MAX_ARTICLE_SIZE_EXCEEDED;
1040                 }
1041
1042                 # update the article here
1043                 if ( $this->mArticle->updateArticle( $text, $this->summary, $this->minoredit,
1044                         $this->watchthis, $bot, $sectionanchor ) )
1045                 {
1046                         wfProfileOut( $fname );
1047                         return self::AS_SUCCESS_UPDATE;
1048                 } else {
1049                         $this->isConflict = true;
1050                 }
1051                 wfProfileOut( $fname );
1052                 return self::AS_END;
1053         }
1054
1055         /**
1056          * Check if no edits were made by other users since
1057          * the time a user started editing the page. Limit to
1058          * 50 revisions for the sake of performance.
1059          */
1060         protected function userWasLastToEdit( $id, $edittime ) {
1061                 if( !$id ) return false;
1062                 $dbw = wfGetDB( DB_MASTER );
1063                 $res = $dbw->select( 'revision',
1064                         'rev_user',
1065                         array(
1066                                 'rev_page' => $this->mArticle->getId(),
1067                                 'rev_timestamp > '.$dbw->addQuotes( $dbw->timestamp($edittime) )
1068                         ),
1069                         __METHOD__,
1070                         array( 'ORDER BY' => 'rev_timestamp ASC', 'LIMIT' => 50 ) );
1071                 while( $row = $res->fetchObject() ) {
1072                         if( $row->rev_user != $id ) {
1073                                 return false;
1074                         }
1075                 }
1076                 return true;
1077         }
1078
1079         /**
1080          * Check given input text against $wgSpamRegex, and return the text of the first match.
1081          * @return mixed -- matching string or false
1082          */
1083         public static function matchSpamRegex( $text ) {
1084                 global $wgSpamRegex;
1085                 // For back compatibility, $wgSpamRegex may be a single string or an array of regexes.
1086                 $regexes = (array)$wgSpamRegex;
1087                 return self::matchSpamRegexInternal( $text, $regexes );
1088         }
1089
1090         /**
1091          * Check given input text against $wgSpamRegex, and return the text of the first match.
1092          * @return mixed -- matching string or false
1093          */
1094         public static function matchSummarySpamRegex( $text ) {
1095                 global $wgSummarySpamRegex;
1096                 $regexes = (array)$wgSummarySpamRegex;
1097                 return self::matchSpamRegexInternal( $text, $regexes );
1098         }
1099
1100         protected static function matchSpamRegexInternal( $text, $regexes ) {
1101                 foreach( $regexes as $regex ) {
1102                         $matches = array();
1103                         if( preg_match( $regex, $text, $matches ) ) {
1104                                 return $matches[0];
1105                         }
1106                 }
1107                 return false;
1108         }
1109
1110         /**
1111          * Initialise form fields in the object
1112          * Called on the first invocation, e.g. when a user clicks an edit link
1113          */
1114         function initialiseForm() {
1115                 $this->edittime = $this->mArticle->getTimestamp();
1116                 $this->textbox1 = $this->getContent( false );
1117                 if ( $this->textbox1 === false ) return false;
1118                 wfProxyCheck();
1119                 return true;
1120         }
1121
1122         function setHeaders() {
1123                 global $wgOut, $wgTitle;
1124                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1125                 if ( $this->formtype == 'preview' ) {
1126                         $wgOut->setPageTitleActionText( wfMsg( 'preview' ) );
1127                 }
1128                 if ( $this->isConflict ) {
1129                         $wgOut->setPageTitle( wfMsg( 'editconflict', $wgTitle->getPrefixedText() ) );
1130                 } elseif ( $this->section != '' ) {
1131                         $msg = $this->section == 'new' ? 'editingcomment' : 'editingsection';
1132                         $wgOut->setPageTitle( wfMsg( $msg, $wgTitle->getPrefixedText() ) );
1133                 } else {
1134                         # Use the title defined by DISPLAYTITLE magic word when present
1135                         if ( isset($this->mParserOutput)
1136                          && ( $dt = $this->mParserOutput->getDisplayTitle() ) !== false ) {
1137                                 $title = $dt;
1138                         } else {
1139                                 $title = $wgTitle->getPrefixedText();
1140                         }
1141                         $wgOut->setPageTitle( wfMsg( 'editing', $title ) );
1142                 }
1143         }
1144
1145         /**
1146          * Send the edit form and related headers to $wgOut
1147          * @param $formCallback Optional callable that takes an OutputPage
1148          *                      parameter; will be called during form output
1149          *                      near the top, for captchas and the like.
1150          */
1151         function showEditForm( $formCallback=null ) {
1152                 global $wgOut, $wgUser, $wgLang, $wgContLang, $wgMaxArticleSize, $wgTitle, $wgRequest;
1153
1154                 # If $wgTitle is null, that means we're in API mode.
1155                 # Some hook probably called this function  without checking
1156                 # for is_null($wgTitle) first. Bail out right here so we don't
1157                 # do lots of work just to discard it right after.
1158                 if (is_null($wgTitle))
1159                         return;
1160
1161                 $fname = 'EditPage::showEditForm';
1162                 wfProfileIn( $fname );
1163
1164                 $sk = $wgUser->getSkin();
1165
1166                 #need to parse the preview early so that we know which templates are used,
1167                 #otherwise users with "show preview after edit box" will get a blank list
1168                 #we parse this near the beginning so that setHeaders can do the title
1169                 #setting work instead of leaving it in getPreviewText
1170                 $previewOutput = '';
1171                 if ( $this->formtype == 'preview' ) {
1172                         $previewOutput = $this->getPreviewText();
1173                 }
1174
1175                 wfRunHooks( 'EditPage::showEditForm:initial', array( &$this ) ) ;
1176
1177                 $this->setHeaders();
1178
1179                 # Enabled article-related sidebar, toplinks, etc.
1180                 $wgOut->setArticleRelated( true );
1181
1182                 if ( $this->isConflict ) {
1183                         $wgOut->wrapWikiMsg( "<div class='mw-explainconflict'>\n$1</div>", 'explainconflict' );
1184
1185                         $this->textbox2 = $this->textbox1;
1186                         $this->textbox1 = $this->getContent();
1187                         $this->edittime = $this->mArticle->getTimestamp();
1188                 } else {
1189                         if ( $this->section != '' && $this->section != 'new' ) {
1190                                 $matches = array();
1191                                 if ( !$this->summary && !$this->preview && !$this->diff ) {
1192                                         preg_match( "/^(=+)(.+)\\1/mi", $this->textbox1, $matches );
1193                                         if ( !empty( $matches[2] ) ) {
1194                                                 global $wgParser;
1195                                                 $this->summary = "/* " .
1196                                                         $wgParser->stripSectionName(trim($matches[2])) .
1197                                                         " */ ";
1198                                         }
1199                                 }
1200                         }
1201
1202                         if ( $this->missingComment ) {
1203                                 $wgOut->wrapWikiMsg( '<div id="mw-missingcommenttext">$1</div>', 'missingcommenttext' );
1204                         }
1205
1206                         if ( $this->missingSummary && $this->section != 'new' ) {
1207                                 $wgOut->wrapWikiMsg( '<div id="mw-missingsummary">$1</div>', 'missingsummary' );
1208                         }
1209
1210                         if ( $this->missingSummary && $this->section == 'new' ) {
1211                                 $wgOut->wrapWikiMsg( '<div id="mw-missingcommentheader">$1</div>', 'missingcommentheader' );
1212                         }
1213
1214                         if ( $this->hookError !== '' ) {
1215                                 $wgOut->addWikiText( $this->hookError );
1216                         }
1217
1218                         if ( !$this->checkUnicodeCompliantBrowser() ) {
1219                                 $wgOut->addWikiMsg( 'nonunicodebrowser' );
1220                         }
1221                         if ( isset( $this->mArticle ) && isset( $this->mArticle->mRevision ) ) {
1222                         // Let sysop know that this will make private content public if saved
1223
1224                                 if ( !$this->mArticle->mRevision->userCan( Revision::DELETED_TEXT ) ) {
1225                                         $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1</div>\n", 'rev-deleted-text-permission' );
1226                                 } else if ( $this->mArticle->mRevision->isDeleted( Revision::DELETED_TEXT ) ) {
1227                                         $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1</div>\n", 'rev-deleted-text-view' );
1228                                 }
1229
1230                                 if ( !$this->mArticle->mRevision->isCurrent() ) {
1231                                         $this->mArticle->setOldSubtitle( $this->mArticle->mRevision->getId() );
1232                                         $wgOut->addWikiMsg( 'editingold' );
1233                                 }
1234                         }
1235                 }
1236
1237                 if ( wfReadOnly() ) {
1238                         $wgOut->wrapWikiMsg( "<div id=\"mw-read-only-warning\">\n$1\n</div>", array( 'readonlywarning', wfReadOnlyReason() ) );
1239                 } elseif ( $wgUser->isAnon() && $this->formtype != 'preview' ) {
1240                         $wgOut->wrapWikiMsg( '<div id="mw-anon-edit-warning">$1</div>', 'anoneditwarning' );
1241                 } else {
1242                         if ( $this->isCssJsSubpage ) {
1243                                 # Check the skin exists
1244                                 if ( $this->isValidCssJsSubpage ) {
1245                                         if ( $this->formtype !== 'preview' ) {
1246                                                 $wgOut->addWikiMsg( 'usercssjsyoucanpreview' );
1247                                         }
1248                                 } else {
1249                                         $wgOut->addWikiMsg( 'userinvalidcssjstitle', $wgTitle->getSkinFromCssJsSubpage() );
1250                                 }
1251                         }
1252                 }
1253
1254                 $classes = array(); // Textarea CSS
1255                 if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
1256                 } elseif ( $this->mTitle->isProtected( 'edit' ) ) {
1257                         # Is the title semi-protected?
1258                         if ( $this->mTitle->isSemiProtected() ) {
1259                                 $noticeMsg = 'semiprotectedpagewarning';
1260                                 $classes[] = 'mw-textarea-sprotected';
1261                         } else {
1262                                 # Then it must be protected based on static groups (regular)
1263                                 $noticeMsg = 'protectedpagewarning';
1264                                 $classes[] = 'mw-textarea-protected';
1265                         }
1266                         $wgOut->addHTML( "<div class='mw-warning-with-logexcerpt'>\n" );
1267                         $wgOut->addWikiMsg( $noticeMsg );
1268                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle->getPrefixedText(), '', 1 );
1269                         $wgOut->addHTML( "</div>\n" );
1270                 }
1271                 if ( $this->mTitle->isCascadeProtected() ) {
1272                         # Is this page under cascading protection from some source pages?
1273                         list($cascadeSources, /* $restrictions */) = $this->mTitle->getCascadeProtectionSources();
1274                         $notice = "<div class='mw-cascadeprotectedwarning'>$1\n";
1275                         $cascadeSourcesCount = count( $cascadeSources );
1276                         if ( $cascadeSourcesCount > 0 ) {
1277                                 # Explain, and list the titles responsible
1278                                 foreach( $cascadeSources as $page ) {
1279                                         $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
1280                                 }
1281                         }
1282                         $notice .= '</div>';
1283                         $wgOut->wrapWikiMsg( $notice, array( 'cascadeprotectedwarning', $cascadeSourcesCount ) );
1284                 }
1285                 if ( !$this->mTitle->exists() && $this->mTitle->getRestrictions( 'create' ) ) {
1286                         $wgOut->wrapWikiMsg( '<div class="mw-titleprotectedwarning">$1</div>', 'titleprotectedwarning' );
1287                 }
1288
1289                 if ( $this->kblength === false ) {
1290                         $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
1291                 }
1292                 if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
1293                         $wgOut->addHTML( "<div class='error' id='mw-edit-longpageerror'>\n" );
1294                         $wgOut->addWikiMsg( 'longpageerror', $wgLang->formatNum( $this->kblength ), $wgLang->formatNum( $wgMaxArticleSize ) );
1295                         $wgOut->addHTML( "</div>\n" );
1296                 } elseif ( $this->kblength > 29 ) {
1297                         $wgOut->addHTML( "<div id='mw-edit-longpagewarning'>\n" );
1298                         $wgOut->addWikiMsg( 'longpagewarning', $wgLang->formatNum( $this->kblength ) );
1299                         $wgOut->addHTML( "</div>\n" );
1300                 }
1301
1302                 $action = $wgTitle->escapeLocalURL( array( 'action' => $this->action ) );
1303
1304                 $summary = wfMsgExt( 'summary', 'parseinline' );
1305                 $subject = wfMsgExt( 'subject', 'parseinline' );
1306
1307                 $cancel = $sk->link(
1308                         $wgTitle,
1309                         wfMsgExt( 'cancel', array( 'parseinline' ) ),
1310                         array(),
1311                         array(),
1312                         array( 'known', 'noclasses' )
1313                 );
1314                 $separator = wfMsgExt( 'pipe-separator' , 'escapenoentities' );
1315                 $edithelpurl = Skin::makeInternalOrExternalUrl( wfMsgForContent( 'edithelppage' ));
1316                 $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
1317                         htmlspecialchars( wfMsg( 'edithelp' ) ).'</a> '.
1318                         htmlspecialchars( wfMsg( 'newwindow' ) );
1319
1320                 global $wgRightsText;
1321                 if ( $wgRightsText ) {
1322                         $copywarnMsg = array( 'copyrightwarning',
1323                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
1324                                 $wgRightsText );
1325                 } else {
1326                         $copywarnMsg = array( 'copyrightwarning2',
1327                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]' );
1328                 }
1329                 // Allow for site and per-namespace customization of contribution/copyright notice.
1330                 wfRunHooks( 'EditPageCopyrightWarning', array( $this->mTitle, &$copywarnMsg ) );
1331
1332                 if ( $wgUser->getOption('showtoolbar') and !$this->isCssJsSubpage ) {
1333                         # prepare toolbar for edit buttons
1334                         $toolbar = EditPage::getEditToolbar();
1335                 } else {
1336                         $toolbar = '';
1337                 }
1338
1339
1340                 // activate checkboxes if user wants them to be always active
1341                 if ( !$this->preview && !$this->diff ) {
1342                         # Sort out the "watch" checkbox
1343                         if ( $wgUser->getOption( 'watchdefault' ) ) {
1344                                 # Watch all edits
1345                                 $this->watchthis = true;
1346                         } elseif ( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
1347                                 # Watch creations
1348                                 $this->watchthis = true;
1349                         } elseif ( $this->mTitle->userIsWatching() ) {
1350                                 # Already watched
1351                                 $this->watchthis = true;
1352                         }
1353
1354                         # May be overriden by request parameters
1355                         if( $wgRequest->getBool( 'watchthis' ) ) {
1356                                 $this->watchthis = true;
1357                         }
1358
1359                         if ( $wgUser->getOption( 'minordefault' ) ) $this->minoredit = true;
1360                 }
1361
1362                 $wgOut->addHTML( $this->editFormPageTop );
1363
1364                 if ( $wgUser->getOption( 'previewontop' ) ) {
1365                         $this->displayPreviewArea( $previewOutput, true );
1366                 }
1367
1368
1369                 $wgOut->addHTML( $this->editFormTextTop );
1370
1371                 # if this is a comment, show a subject line at the top, which is also the edit summary.
1372                 # Otherwise, show a summary field at the bottom
1373                 $summarytext = $wgContLang->recodeForEdit( $this->summary );
1374
1375                 # If a blank edit summary was previously provided, and the appropriate
1376                 # user preference is active, pass a hidden tag as wpIgnoreBlankSummary. This will stop the
1377                 # user being bounced back more than once in the event that a summary
1378                 # is not required.
1379                 #####
1380                 # For a bit more sophisticated detection of blank summaries, hash the
1381                 # automatic one and pass that in the hidden field wpAutoSummary.
1382                 $summaryhiddens =  '';
1383                 if ( $this->missingSummary ) $summaryhiddens .= Xml::hidden( 'wpIgnoreBlankSummary', true );
1384                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
1385                 $summaryhiddens .= Xml::hidden( 'wpAutoSummary', $autosumm );
1386                 if ( $this->section == 'new' ) {
1387                         $commentsubject = '';
1388                         if ( !$wgRequest->getBool( 'nosummary' ) ) {
1389                                 # Add a class if 'missingsummary' is triggered to allow styling of the summary line
1390                                 $summaryClass = $this->missingSummary ? 'mw-summarymissed' : 'mw-summary';
1391
1392                                 $commentsubject =
1393                                         Xml::tags( 'label', array( 'for' => 'wpSummary' ), $subject );
1394                                 $commentsubject =
1395                                         Xml::tags( 'span', array( 'class' => $summaryClass, 'id' => "wpSummaryLabel" ),
1396                                                 $commentsubject );
1397                                 $commentsubject .= '&nbsp;';
1398                                 $commentsubject .= Xml::input( 'wpSummary',
1399                                                                         60,
1400                                                                         $summarytext,
1401                                                                         array(
1402                                                                                 'id' => 'wpSummary',
1403                                                                                 'maxlength' => '200',
1404                                                                                 'tabindex' => '1'
1405                                                                         ) );
1406                         }
1407                         $editsummary = "<div class='editOptions'>\n";
1408                         global $wgParser;
1409                         $formattedSummary = wfMsgForContent( 'newsectionsummary', $wgParser->stripSectionName( $this->summary ) );
1410                         $subjectpreview = $summarytext && $this->preview ?
1411                                 "<div class=\"mw-summary-preview\">". wfMsgExt('subject-preview', 'parseinline') . $sk->commentBlock( $formattedSummary, $this->mTitle, true )."</div>\n" : '';
1412                         $summarypreview = '';
1413                 } else {
1414                         $commentsubject = '';
1415
1416                         # Add a class if 'missingsummary' is triggered to allow styling of the summary line
1417                         $summaryClass = $this->missingSummary ? 'mw-summarymissed' : 'mw-summary';
1418
1419                         $editsummary = Xml::tags( 'label', array( 'for' => 'wpSummary' ), $summary );
1420                         $editsummary = Xml::tags( 'span',  array( 'class' => $summaryClass, 'id' => "wpSummaryLabel" ),
1421                                         $editsummary ) . ' ';
1422
1423                         $editsummary .= Xml::input( 'wpSummary',
1424                                 60,
1425                                 $summarytext,
1426                                 array(
1427                                         'id' => 'wpSummary',
1428                                         'maxlength' => '200',
1429                                         'tabindex' => '1'
1430                                 ) );
1431
1432                         // No idea where this is closed.
1433                         $editsummary = Xml::openElement( 'div', array( 'class' => 'editOptions' ) )
1434                                                         . $editsummary . '<br/>';
1435
1436                         $summarypreview = '';
1437                         if ( $summarytext && $this->preview ) {
1438                                 $summarypreview =
1439                                         Xml::tags( 'div',
1440                                                 array( 'class' => 'mw-summary-preview' ),
1441                                                 wfMsgExt( 'summary-preview', 'parseinline' ) .
1442                                                         $sk->commentBlock( $this->summary, $this->mTitle )
1443                                         );
1444                         }
1445                         $subjectpreview = '';
1446                 }
1447                 $commentsubject .= $summaryhiddens;
1448
1449                 # Set focus to the edit box on load, except on preview or diff, where it would interfere with the display
1450                 if ( !$this->preview && !$this->diff ) {
1451                         $wgOut->setOnloadHandler( 'document.editform.wpTextbox1.focus()' );
1452                 }
1453                 $templates = $this->getTemplates();
1454                 $formattedtemplates = $sk->formatTemplates( $templates, $this->preview, $this->section != '');
1455
1456                 $hiddencats = $this->mArticle->getHiddenCategories();
1457                 $formattedhiddencats = $sk->formatHiddenCategories( $hiddencats );
1458
1459                 global $wgUseMetadataEdit ;
1460                 if ( $wgUseMetadataEdit ) {
1461                         $metadata = $this->mMetaData ;
1462                         $metadata = htmlspecialchars( $wgContLang->recodeForEdit( $metadata ) ) ;
1463                         $top = wfMsgWikiHtml( 'metadata_help' );
1464                         /* ToDo: Replace with clean code */
1465                         $ew = $wgUser->getOption( 'editwidth' );
1466                         if ( $ew ) $ew = " style=\"width:100%\"";
1467                         else $ew = '';
1468                         $cols = $wgUser->getIntOption( 'cols' );
1469                         /* /ToDo */
1470                         $metadata = $top . "<textarea name='metadata' rows='3' cols='{$cols}'{$ew}>{$metadata}</textarea>" ;
1471                 }
1472                 else $metadata = "" ;
1473
1474                 $recreate = '';
1475                 if ( $this->wasDeletedSinceLastEdit() ) {
1476                         if ( 'save' != $this->formtype ) {
1477                                 $wgOut->wrapWikiMsg(
1478                                         "<div class='error mw-deleted-while-editing'>\n$1</div>",
1479                                         'deletedwhileediting' );
1480                         } else {
1481                                 // Hide the toolbar and edit area, user can click preview to get it back
1482                                 // Add an confirmation checkbox and explanation.
1483                                 $toolbar = '';
1484                                 $recreate = '<div class="mw-confirm-recreate">' .
1485                                                 $wgOut->parse( wfMsg( 'confirmrecreate',  $this->lastDelete->user_name , $this->lastDelete->log_comment ) ) .
1486                                                 Xml::checkLabel( wfMsg( 'recreate' ), 'wpRecreate', 'wpRecreate', false,
1487                                                         array( 'title' => $sk->titleAttrib( 'recreate' ), 'tabindex' => 1, 'id' => 'wpRecreate' )
1488                                                 ) . '</div>';
1489                         }
1490                 }
1491
1492                 $tabindex = 2;
1493
1494                 $checkboxes = $this->getCheckboxes( $tabindex, $sk,
1495                         array( 'minor' => $this->minoredit, 'watch' => $this->watchthis ) );
1496
1497                 $checkboxhtml = implode( $checkboxes, "\n" );
1498
1499                 $buttons = $this->getEditButtons( $tabindex );
1500                 $buttonshtml = implode( $buttons, "\n" );
1501
1502                 $safemodehtml = $this->checkUnicodeCompliantBrowser()
1503                         ? '' : Xml::hidden( 'safemode', '1' );
1504
1505                 $wgOut->addHTML( <<<END
1506 {$toolbar}
1507 <form id="editform" name="editform" method="post" action="$action" enctype="multipart/form-data">
1508 END
1509 );
1510
1511                 if ( is_callable( $formCallback ) ) {
1512                         call_user_func_array( $formCallback, array( &$wgOut ) );
1513                 }
1514
1515                 wfRunHooks( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );
1516
1517                 // Put these up at the top to ensure they aren't lost on early form submission
1518                 $this->showFormBeforeText();
1519
1520                 $wgOut->addHTML( <<<END
1521 {$recreate}
1522 {$commentsubject}
1523 {$subjectpreview}
1524 {$this->editFormTextBeforeContent}
1525 END
1526 );
1527                 $this->showTextbox1( $classes );
1528
1529                 $wgOut->wrapWikiMsg( "<div id=\"editpage-copywarn\">\n$1\n</div>", $copywarnMsg );
1530                 $wgOut->addHTML( <<<END
1531 {$this->editFormTextAfterWarn}
1532 {$metadata}
1533 {$editsummary}
1534 {$summarypreview}
1535 {$checkboxhtml}
1536 {$safemodehtml}
1537 END
1538 );
1539
1540                 $wgOut->addHTML(
1541 "<div class='editButtons'>
1542 {$buttonshtml}
1543         <span class='editHelp'>{$cancel}{$separator}{$edithelp}</span>
1544 </div><!-- editButtons -->
1545 </div><!-- editOptions -->");
1546
1547                 /**
1548                  * To make it harder for someone to slip a user a page
1549                  * which submits an edit form to the wiki without their
1550                  * knowledge, a random token is associated with the login
1551                  * session. If it's not passed back with the submission,
1552                  * we won't save the page, or render user JavaScript and
1553                  * CSS previews.
1554                  *
1555                  * For anon editors, who may not have a session, we just
1556                  * include the constant suffix to prevent editing from
1557                  * broken text-mangling proxies.
1558                  */
1559                 $token = htmlspecialchars( $wgUser->editToken() );
1560                 $wgOut->addHTML( "\n<input type='hidden' value=\"$token\" name=\"wpEditToken\" />\n" );
1561
1562                 $this->showTosSummary();
1563                 $this->showEditTools();
1564
1565                 $wgOut->addHTML( <<<END
1566 {$this->editFormTextAfterTools}
1567 <div class='templatesUsed'>
1568 {$formattedtemplates}
1569 </div>
1570 <div class='hiddencats'>
1571 {$formattedhiddencats}
1572 </div>
1573 END
1574 );
1575
1576                 if ( $this->isConflict && wfRunHooks( 'EditPageBeforeConflictDiff', array( &$this, &$wgOut ) ) ) {
1577                         $wgOut->wrapWikiMsg( '==$1==', "yourdiff" );
1578
1579                         $de = new DifferenceEngine( $this->mTitle );
1580                         $de->setText( $this->textbox2, $this->textbox1 );
1581                         $de->showDiff( wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
1582
1583                         $wgOut->wrapWikiMsg( '==$1==', "yourtext" );
1584                         $this->showTextbox2();
1585                 }
1586                 $wgOut->addHTML( $this->editFormTextBottom );
1587                 $wgOut->addHTML( "</form>\n" );
1588                 if ( !$wgUser->getOption( 'previewontop' ) ) {
1589                         $this->displayPreviewArea( $previewOutput, false );
1590                 }
1591
1592                 wfProfileOut( $fname );
1593         }
1594
1595         protected function showFormBeforeText() {
1596                 global $wgOut;
1597                 $wgOut->addHTML( "
1598 <input type='hidden' value=\"" . htmlspecialchars( $this->section ) . "\" name=\"wpSection\" />
1599 <input type='hidden' value=\"{$this->starttime}\" name=\"wpStarttime\" />\n
1600 <input type='hidden' value=\"{$this->edittime}\" name=\"wpEdittime\" />\n
1601 <input type='hidden' value=\"{$this->scrolltop}\" name=\"wpScrolltop\" id=\"wpScrolltop\" />\n" );
1602         }
1603
1604         protected function showTextbox1( $classes ) {
1605                 $attribs = array( 'tabindex' => 1 );
1606
1607                 if ( $this->wasDeletedSinceLastEdit() )
1608                         $attribs['type'] = 'hidden';
1609                 if ( !empty($classes) )
1610                         $attribs['class'] = implode(' ',$classes);
1611
1612                 $this->showTextbox( $this->textbox1, 'wpTextbox1', $attribs );
1613         }
1614
1615         protected function showTextbox2() {
1616                 $this->showTextbox( $this->textbox2, 'wpTextbox2', array( 'tabindex' => 6 ) );
1617         }
1618
1619         protected function showTextbox( $content, $name, $attribs = array() ) {
1620                 global $wgOut, $wgUser;
1621
1622                 $wikitext = $this->safeUnicodeOutput( $content );
1623                 if ( $wikitext !== '' ) {
1624                         // Ensure there's a newline at the end, otherwise adding lines
1625                         // is awkward.
1626                         // But don't add a newline if the ext is empty, or Firefox in XHTML
1627                         // mode will show an extra newline. A bit annoying.
1628                         $wikitext .= "\n";
1629                 }
1630
1631                 $attribs['accesskey'] = ',';
1632                 $attribs['id'] = $name;
1633
1634                 if ( $wgUser->getOption( 'editwidth' ) )
1635                         $attribs['style'] = 'width: 100%';
1636
1637                 $wgOut->addHTML( Xml::textarea(
1638                         $name,
1639                         $wikitext,
1640                         $wgUser->getIntOption( 'cols' ), $wgUser->getIntOption( 'rows' ),
1641                         $attribs ) );
1642         }
1643
1644         protected function displayPreviewArea( $previewOutput, $isOnTop = false ) {
1645                 global $wgOut;
1646                 $classes = array();
1647                 if ( $isOnTop )
1648                         $classes[] = 'ontop';
1649
1650                 $attribs = array( 'id' => 'wikiPreview', 'class' => implode( ' ', $classes ) );
1651
1652                 if ( $this->formtype != 'preview' )
1653                         $attribs['style'] = 'display: none;';
1654
1655                 $wgOut->addHTML( Xml::openElement( 'div', $attribs ) );
1656
1657                 if ( $this->formtype == 'preview' ) {
1658                         $this->showPreview( $previewOutput );
1659                 }
1660
1661                 $wgOut->addHTML( '</div>' );
1662
1663                 if ( $this->formtype == 'diff') {
1664                         $this->showDiff();
1665                 }
1666         }
1667
1668         /**
1669          * Append preview output to $wgOut.
1670          * Includes category rendering if this is a category page.
1671          *
1672          * @param string $text The HTML to be output for the preview.
1673          */
1674         protected function showPreview( $text ) {
1675                 global $wgOut;
1676                 if ( $this->mTitle->getNamespace() == NS_CATEGORY) {
1677                         $this->mArticle->openShowCategory();
1678                 }
1679                 # This hook seems slightly odd here, but makes things more
1680                 # consistent for extensions.
1681                 wfRunHooks( 'OutputPageBeforeHTML',array( &$wgOut, &$text ) );
1682                 $wgOut->addHTML( $text );
1683                 if ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
1684                         $this->mArticle->closeShowCategory();
1685                 }
1686         }
1687
1688         /**
1689          * Live Preview lets us fetch rendered preview page content and
1690          * add it to the page without refreshing the whole page.
1691          * If not supported by the browser it will fall through to the normal form
1692          * submission method.
1693          *
1694          * This function outputs a script tag to support live preview, and
1695          * returns an onclick handler which should be added to the attributes
1696          * of the preview button
1697          */
1698         function doLivePreviewScript() {
1699                 global $wgOut, $wgTitle;
1700                 $wgOut->addScriptFile( 'preview.js' );
1701                 $liveAction = $wgTitle->getLocalUrl( array(
1702                         'action' => $this->action,
1703                         'wpPreview' => 'true',
1704                         'live' => 'true'
1705                 ) );
1706                 return "return !lpDoPreview(" .
1707                         "editform.wpTextbox1.value," .
1708                         '"' . $liveAction . '"' . ")";
1709         }
1710
1711         protected function showTosSummary() {
1712                 $msg = 'editpage-tos-summary';
1713                 // Give a chance for site and per-namespace customizations of
1714                 // terms of service summary link that might exist separately
1715                 // from the copyright notice.
1716                 //
1717                 // This will display between the save button and the edit tools,
1718                 // so should remain short!
1719                 wfRunHooks( 'EditPageTosSummary', array( $this->mTitle, &$msg ) );
1720                 $text = wfMsg( $msg );
1721                 if( !wfEmptyMsg( $msg, $text ) && $text !== '-' ) {
1722                         global $wgOut;
1723                         $wgOut->addHTML( '<div class="mw-tos-summary">' );
1724                         $wgOut->addWikiMsgArray( $msg, array() );
1725                         $wgOut->addHTML( '</div>' );
1726                 }
1727         }
1728
1729         protected function showEditTools() {
1730                 global $wgOut;
1731                 $wgOut->addHTML( '<div class="mw-editTools">' );
1732                 $wgOut->addWikiMsgArray( 'edittools', array(), array( 'content' ) );
1733                 $wgOut->addHTML( '</div>' );
1734         }
1735
1736         protected function getLastDelete() {
1737                 $dbr = wfGetDB( DB_SLAVE );
1738                 $data = $dbr->selectRow(
1739                         array( 'logging', 'user' ),
1740                         array( 'log_type',
1741                                'log_action',
1742                                'log_timestamp',
1743                                'log_user',
1744                                'log_namespace',
1745                                'log_title',
1746                                'log_comment',
1747                                'log_params',
1748                                    'log_deleted',
1749                                'user_name' ),
1750                         array( 'log_namespace' => $this->mTitle->getNamespace(),
1751                                'log_title' => $this->mTitle->getDBkey(),
1752                                'log_type' => 'delete',
1753                                'log_action' => 'delete',
1754                                'user_id=log_user' ),
1755                         __METHOD__,
1756                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' )
1757                 );
1758                 // Quick paranoid permission checks...
1759                 if( is_object($data) ) {
1760                         if( $data->log_deleted & LogPage::DELETED_USER )
1761                                 $data->user_name = wfMsgHtml('rev-deleted-user');
1762                         if( $data->log_deleted & LogPage::DELETED_COMMENT )
1763                                 $data->log_comment = wfMsgHtml('rev-deleted-comment');
1764                 }
1765                 return $data;
1766         }
1767
1768         /**
1769          * Get the rendered text for previewing.
1770          * @return string
1771          */
1772         function getPreviewText() {
1773                 global $wgOut, $wgUser, $wgTitle, $wgParser, $wgLang, $wgContLang, $wgMessageCache;
1774
1775                 wfProfileIn( __METHOD__ );
1776
1777                 if ( $this->mTriedSave && !$this->mTokenOk ) {
1778                         if ( $this->mTokenOkExceptSuffix ) {
1779                                 $note = wfMsg( 'token_suffix_mismatch' );
1780                         } else {
1781                                 $note = wfMsg( 'session_fail_preview' );
1782                         }
1783                 } else {
1784                         $note = wfMsg( 'previewnote' );
1785                 }
1786
1787                 $parserOptions = ParserOptions::newFromUser( $wgUser );
1788                 $parserOptions->setEditSection( false );
1789                 $parserOptions->setIsPreview( true );
1790                 $parserOptions->setIsSectionPreview( !is_null($this->section) && $this->section !== '' );
1791
1792                 global $wgRawHtml;
1793                 if ( $wgRawHtml && !$this->mTokenOk ) {
1794                         // Could be an offsite preview attempt. This is very unsafe if
1795                         // HTML is enabled, as it could be an attack.
1796                         return $wgOut->parse( "<div class='previewnote'>" .
1797                                 wfMsg( 'session_fail_preview_html' ) . "</div>" );
1798                 }
1799
1800                 # don't parse user css/js, show message about preview
1801                 # XXX: stupid php bug won't let us use $wgTitle->isCssJsSubpage() here
1802
1803                 if ( $this->isCssJsSubpage ) {
1804                         if (preg_match("/\\.css$/", $this->mTitle->getText() ) ) {
1805                                 $previewtext = wfMsg('usercsspreview');
1806                         } else if (preg_match("/\\.js$/", $this->mTitle->getText() ) ) {
1807                                 $previewtext = wfMsg('userjspreview');
1808                         }
1809                         $parserOptions->setTidy(true);
1810                         $parserOutput = $wgParser->parse( $previewtext, $this->mTitle, $parserOptions );
1811                         $previewHTML = $parserOutput->mText;
1812                 } elseif ( $rt = Title::newFromRedirectArray( $this->textbox1 ) ) {
1813                         $previewHTML = $this->mArticle->viewRedirect( $rt, false );
1814                 } else {
1815                         $toparse = $this->textbox1;
1816
1817                         # If we're adding a comment, we need to show the
1818                         # summary as the headline
1819                         if ( $this->section=="new" && $this->summary!="" ) {
1820                                 $toparse="== {$this->summary} ==\n\n".$toparse;
1821                         }
1822
1823                         if ( $this->mMetaData != "" ) $toparse .= "\n" . $this->mMetaData;
1824
1825                         // Parse mediawiki messages with correct target language
1826                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
1827                                 list( /* $unused */, $lang ) = $wgMessageCache->figureMessage( $this->mTitle->getText() );
1828                                 $obj = wfGetLangObj( $lang );
1829                                 $parserOptions->setTargetLanguage( $obj );
1830                         }
1831
1832
1833                         $parserOptions->setTidy(true);
1834                         $parserOptions->enableLimitReport();
1835                         $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $toparse ),
1836                                         $this->mTitle, $parserOptions );
1837
1838                         $previewHTML = $parserOutput->getText();
1839                         $this->mParserOutput = $parserOutput;
1840                         $wgOut->addParserOutputNoText( $parserOutput );
1841
1842                         if ( count( $parserOutput->getWarnings() ) ) {
1843                                 $note .= "\n\n" . implode( "\n\n", $parserOutput->getWarnings() );
1844                         }
1845                 }
1846
1847                 if( $this->isConflict ) {
1848                         $conflict = '<h2 id="mw-previewconflict">' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
1849                 } else {
1850                         $conflict = '<hr />';
1851                 }
1852
1853                 $previewhead = "<div class='previewnote'>\n" .
1854                         '<h2 id="mw-previewheader">' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>" .
1855                         $wgOut->parse( $note ) . $conflict . "</div>\n";
1856
1857                 wfProfileOut( __METHOD__ );
1858                 return $previewhead . $previewHTML;
1859         }
1860
1861         function getTemplates() {
1862                 if ( $this->preview || $this->section != '' ) {
1863                         $templates = array();
1864                         if ( !isset($this->mParserOutput) ) return $templates;
1865                         foreach( $this->mParserOutput->getTemplates() as $ns => $template) {
1866                                 foreach( array_keys( $template ) as $dbk ) {
1867                                         $templates[] = Title::makeTitle($ns, $dbk);
1868                                 }
1869                         }
1870                         return $templates;
1871                 } else {
1872                         return $this->mArticle->getUsedTemplates();
1873                 }
1874         }
1875
1876         /**
1877          * Call the stock "user is blocked" page
1878          */
1879         function blockedPage() {
1880                 global $wgOut, $wgUser;
1881                 $wgOut->blockedPage( false ); # Standard block notice on the top, don't 'return'
1882
1883                 # If the user made changes, preserve them when showing the markup
1884                 # (This happens when a user is blocked during edit, for instance)
1885                 $first = $this->firsttime || ( !$this->save && $this->textbox1 == '' );
1886                 if ( $first ) {
1887                         $source = $this->mTitle->exists() ? $this->getContent() : false;
1888                 } else {
1889                         $source = $this->textbox1;
1890                 }
1891
1892                 # Spit out the source or the user's modified version
1893                 if ( $source !== false ) {
1894                         $rows = $wgUser->getIntOption( 'rows' );
1895                         $cols = $wgUser->getIntOption( 'cols' );
1896                         $attribs = array( 'id' => 'wpTextbox1', 'name' => 'wpTextbox1', 'cols' => $cols, 'rows' => $rows, 'readonly' => 'readonly' );
1897                         $wgOut->addHTML( '<hr />' );
1898                         $wgOut->addWikiMsg( $first ? 'blockedoriginalsource' : 'blockededitsource', $this->mTitle->getPrefixedText() );
1899                         # Why we don't use Xml::element here?
1900                         # Is it because if $source is '', it returns <textarea />?
1901                         $wgOut->addHTML( Xml::openElement( 'textarea', $attribs ) . htmlspecialchars( $source ) . Xml::closeElement( 'textarea' ) );
1902                 }
1903         }
1904
1905         /**
1906          * Produce the stock "please login to edit pages" page
1907          */
1908         function userNotLoggedInPage() {
1909                 global $wgUser, $wgOut, $wgTitle;
1910                 $skin = $wgUser->getSkin();
1911
1912                 $loginTitle = SpecialPage::getTitleFor( 'Userlogin' );
1913                 $loginLink = $skin->link(
1914                         $loginTitle,
1915                         wfMsgHtml( 'loginreqlink' ),
1916                         array(),
1917                         array( 'returnto' => $wgTitle->getPrefixedText() ),
1918                         array( 'known', 'noclasses' )
1919                 );
1920
1921                 $wgOut->setPageTitle( wfMsg( 'whitelistedittitle' ) );
1922                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1923                 $wgOut->setArticleRelated( false );
1924
1925                 $wgOut->addHTML( wfMsgWikiHtml( 'whitelistedittext', $loginLink ) );
1926                 $wgOut->returnToMain( false, $wgTitle );
1927         }
1928
1929         /**
1930          * Creates a basic error page which informs the user that
1931          * they have attempted to edit a nonexistent section.
1932          */
1933         function noSuchSectionPage() {
1934                 global $wgOut, $wgTitle;
1935
1936                 $wgOut->setPageTitle( wfMsg( 'nosuchsectiontitle' ) );
1937                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1938                 $wgOut->setArticleRelated( false );
1939
1940                 $wgOut->addWikiMsg( 'nosuchsectiontext', $this->section );
1941                 $wgOut->returnToMain( false, $wgTitle );
1942         }
1943
1944         /**
1945          * Produce the stock "your edit contains spam" page
1946          *
1947          * @param $match Text which triggered one or more filters
1948          */
1949         function spamPage( $match = false ) {
1950                 global $wgOut, $wgTitle;
1951
1952                 $wgOut->setPageTitle( wfMsg( 'spamprotectiontitle' ) );
1953                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1954                 $wgOut->setArticleRelated( false );
1955
1956                 $wgOut->addHTML( '<div id="spamprotected">' );
1957                 $wgOut->addWikiMsg( 'spamprotectiontext' );
1958                 if ( $match )
1959                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
1960                 $wgOut->addHTML( '</div>' );
1961
1962                 $wgOut->returnToMain( false, $wgTitle );
1963         }
1964
1965         /**
1966          * @private
1967          * @todo document
1968          */
1969         function mergeChangesInto( &$editText ){
1970                 $fname = 'EditPage::mergeChangesInto';
1971                 wfProfileIn( $fname );
1972
1973                 $db = wfGetDB( DB_MASTER );
1974
1975                 // This is the revision the editor started from
1976                 $baseRevision = $this->getBaseRevision();
1977                 if ( is_null( $baseRevision ) ) {
1978                         wfProfileOut( $fname );
1979                         return false;
1980                 }
1981                 $baseText = $baseRevision->getText();
1982
1983                 // The current state, we want to merge updates into it
1984                 $currentRevision = Revision::loadFromTitle( $db, $this->mTitle );
1985                 if ( is_null( $currentRevision ) ) {
1986                         wfProfileOut( $fname );
1987                         return false;
1988                 }
1989                 $currentText = $currentRevision->getText();
1990
1991                 $result = '';
1992                 if ( wfMerge( $baseText, $editText, $currentText, $result ) ) {
1993                         $editText = $result;
1994                         wfProfileOut( $fname );
1995                         return true;
1996                 } else {
1997                         wfProfileOut( $fname );
1998                         return false;
1999                 }
2000         }
2001
2002         /**
2003          * Check if the browser is on a blacklist of user-agents known to
2004          * mangle UTF-8 data on form submission. Returns true if Unicode
2005          * should make it through, false if it's known to be a problem.
2006          * @return bool
2007          * @private
2008          */
2009         function checkUnicodeCompliantBrowser() {
2010                 global $wgBrowserBlackList;
2011                 if ( empty( $_SERVER["HTTP_USER_AGENT"] ) ) {
2012                         // No User-Agent header sent? Trust it by default...
2013                         return true;
2014                 }
2015                 $currentbrowser = $_SERVER["HTTP_USER_AGENT"];
2016                 foreach ( $wgBrowserBlackList as $browser ) {
2017                         if ( preg_match($browser, $currentbrowser) ) {
2018                                 return false;
2019                         }
2020                 }
2021                 return true;
2022         }
2023
2024         /**
2025          * @deprecated use $wgParser->stripSectionName()
2026          */
2027         function pseudoParseSectionAnchor( $text ) {
2028                 global $wgParser;
2029                 return $wgParser->stripSectionName( $text );
2030         }
2031
2032         /**
2033          * Format an anchor fragment as it would appear for a given section name
2034          * @param string $text
2035          * @return string
2036          * @private
2037          */
2038         function sectionAnchor( $text ) {
2039                 global $wgParser;
2040                 return $wgParser->guessSectionNameFromWikiText( $text );
2041         }
2042
2043         /**
2044          * Shows a bulletin board style toolbar for common editing functions.
2045          * It can be disabled in the user preferences.
2046          * The necessary JavaScript code can be found in skins/common/edit.js.
2047          *
2048          * @return string
2049          */
2050         static function getEditToolbar() {
2051                 global $wgStylePath, $wgContLang, $wgLang, $wgJsMimeType;
2052
2053                 /**
2054                  * toolarray an array of arrays which each include the filename of
2055                  * the button image (without path), the opening tag, the closing tag,
2056                  * and optionally a sample text that is inserted between the two when no
2057                  * selection is highlighted.
2058                  * The tip text is shown when the user moves the mouse over the button.
2059                  *
2060                  * Already here are accesskeys (key), which are not used yet until someone
2061                  * can figure out a way to make them work in IE. However, we should make
2062                  * sure these keys are not defined on the edit page.
2063                  */
2064                 $toolarray = array(
2065                         array(
2066                                 'image'  => $wgLang->getImageFile('button-bold'),
2067                                 'id'     => 'mw-editbutton-bold',
2068                                 'open'   => '\'\'\'',
2069                                 'close'  => '\'\'\'',
2070                                 'sample' => wfMsg('bold_sample'),
2071                                 'tip'    => wfMsg('bold_tip'),
2072                                 'key'    => 'B'
2073                         ),
2074                         array(
2075                                 'image'  => $wgLang->getImageFile('button-italic'),
2076                                 'id'     => 'mw-editbutton-italic',
2077                                 'open'   => '\'\'',
2078                                 'close'  => '\'\'',
2079                                 'sample' => wfMsg('italic_sample'),
2080                                 'tip'    => wfMsg('italic_tip'),
2081                                 'key'    => 'I'
2082                         ),
2083                         array(
2084                                 'image'  => $wgLang->getImageFile('button-link'),
2085                                 'id'     => 'mw-editbutton-link',
2086                                 'open'   => '[[',
2087                                 'close'  => ']]',
2088                                 'sample' => wfMsg('link_sample'),
2089                                 'tip'    => wfMsg('link_tip'),
2090                                 'key'    => 'L'
2091                         ),
2092                         array(
2093                                 'image'  => $wgLang->getImageFile('button-extlink'),
2094                                 'id'     => 'mw-editbutton-extlink',
2095                                 'open'   => '[',
2096                                 'close'  => ']',
2097                                 'sample' => wfMsg('extlink_sample'),
2098                                 'tip'    => wfMsg('extlink_tip'),
2099                                 'key'    => 'X'
2100                         ),
2101                         array(
2102                                 'image'  => $wgLang->getImageFile('button-headline'),
2103                                 'id'     => 'mw-editbutton-headline',
2104                                 'open'   => "\n== ",
2105                                 'close'  => " ==\n",
2106                                 'sample' => wfMsg('headline_sample'),
2107                                 'tip'    => wfMsg('headline_tip'),
2108                                 'key'    => 'H'
2109                         ),
2110                         array(
2111                                 'image'  => $wgLang->getImageFile('button-image'),
2112                                 'id'     => 'mw-editbutton-image',
2113                                 'open'   => '[['.$wgContLang->getNsText(NS_FILE).':',
2114                                 'close'  => ']]',
2115                                 'sample' => wfMsg('image_sample'),
2116                                 'tip'    => wfMsg('image_tip'),
2117                                 'key'    => 'D'
2118                         ),
2119                         array(
2120                                 'image'  => $wgLang->getImageFile('button-media'),
2121                                 'id'     => 'mw-editbutton-media',
2122                                 'open'   => '[['.$wgContLang->getNsText(NS_MEDIA).':',
2123                                 'close'  => ']]',
2124                                 'sample' => wfMsg('media_sample'),
2125                                 'tip'    => wfMsg('media_tip'),
2126                                 'key'    => 'M'
2127                         ),
2128                         array(
2129                                 'image'  => $wgLang->getImageFile('button-math'),
2130                                 'id'     => 'mw-editbutton-math',
2131                                 'open'   => "<math>",
2132                                 'close'  => "</math>",
2133                                 'sample' => wfMsg('math_sample'),
2134                                 'tip'    => wfMsg('math_tip'),
2135                                 'key'    => 'C'
2136                         ),
2137                         array(
2138                                 'image'  => $wgLang->getImageFile('button-nowiki'),
2139                                 'id'     => 'mw-editbutton-nowiki',
2140                                 'open'   => "<nowiki>",
2141                                 'close'  => "</nowiki>",
2142                                 'sample' => wfMsg('nowiki_sample'),
2143                                 'tip'    => wfMsg('nowiki_tip'),
2144                                 'key'    => 'N'
2145                         ),
2146                         array(
2147                                 'image'  => $wgLang->getImageFile('button-sig'),
2148                                 'id'     => 'mw-editbutton-signature',
2149                                 'open'   => '--~~~~',
2150                                 'close'  => '',
2151                                 'sample' => '',
2152                                 'tip'    => wfMsg('sig_tip'),
2153                                 'key'    => 'Y'
2154                         ),
2155                         array(
2156                                 'image'  => $wgLang->getImageFile('button-hr'),
2157                                 'id'     => 'mw-editbutton-hr',
2158                                 'open'   => "\n----\n",
2159                                 'close'  => '',
2160                                 'sample' => '',
2161                                 'tip'    => wfMsg('hr_tip'),
2162                                 'key'    => 'R'
2163                         )
2164                 );
2165                 $toolbar = "<div id='toolbar'>\n";
2166                 $toolbar.="<script type='$wgJsMimeType'>\n/*<![CDATA[*/\n";
2167
2168                 foreach($toolarray as $tool) {
2169                         $params = array(
2170                                 $image = $wgStylePath.'/common/images/'.$tool['image'],
2171                                 // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
2172                                 // Older browsers show a "speedtip" type message only for ALT.
2173                                 // Ideally these should be different, realistically they
2174                                 // probably don't need to be.
2175                                 $tip = $tool['tip'],
2176                                 $open = $tool['open'],
2177                                 $close = $tool['close'],
2178                                 $sample = $tool['sample'],
2179                                 $cssId = $tool['id'],
2180                         );
2181
2182                         $paramList = implode( ',',
2183                                 array_map( array( 'Xml', 'encodeJsVar' ), $params ) );
2184                         $toolbar.="addButton($paramList);\n";
2185                 }
2186
2187                 $toolbar.="/*]]>*/\n</script>";
2188                 $toolbar.="\n</div>";
2189
2190                 wfRunHooks( 'EditPageBeforeEditToolbar', array( &$toolbar ) );
2191
2192                 return $toolbar;
2193         }
2194
2195         /**
2196          * Returns an array of html code of the following checkboxes:
2197          * minor and watch
2198          *
2199          * @param $tabindex Current tabindex
2200          * @param $skin Skin object
2201          * @param $checked Array of checkbox => bool, where bool indicates the checked
2202          *                 status of the checkbox
2203          *
2204          * @return array
2205          */
2206         public function getCheckboxes( &$tabindex, $skin, $checked ) {
2207                 global $wgUser;
2208
2209                 $checkboxes = array();
2210
2211                 $checkboxes['minor'] = '';
2212                 $minorLabel = wfMsgExt('minoredit', array('parseinline'));
2213                 if ( $wgUser->isAllowed('minoredit') ) {
2214                         $attribs = array(
2215                                 'tabindex'  => ++$tabindex,
2216                                 'accesskey' => wfMsg( 'accesskey-minoredit' ),
2217                                 'id'        => 'wpMinoredit',
2218                         );
2219                         $checkboxes['minor'] =
2220                                 Xml::check( 'wpMinoredit', $checked['minor'], $attribs ) .
2221                                 "&nbsp;<label for='wpMinoredit'".$skin->tooltip('minoredit', 'withaccess').">{$minorLabel}</label>";
2222                 }
2223
2224                 $watchLabel = wfMsgExt('watchthis', array('parseinline'));
2225                 $checkboxes['watch'] = '';
2226                 if ( $wgUser->isLoggedIn() ) {
2227                         $attribs = array(
2228                                 'tabindex'  => ++$tabindex,
2229                                 'accesskey' => wfMsg( 'accesskey-watch' ),
2230                                 'id'        => 'wpWatchthis',
2231                         );
2232                         $checkboxes['watch'] =
2233                                 Xml::check( 'wpWatchthis', $checked['watch'], $attribs ) .
2234                                 "&nbsp;<label for='wpWatchthis'".$skin->tooltip('watch', 'withaccess').">{$watchLabel}</label>";
2235                 }
2236                 wfRunHooks( 'EditPageBeforeEditChecks', array( &$this, &$checkboxes, &$tabindex ) );
2237                 return $checkboxes;
2238         }
2239
2240         /**
2241          * Returns an array of html code of the following buttons:
2242          * save, diff, preview and live
2243          *
2244          * @param $tabindex Current tabindex
2245          *
2246          * @return array
2247          */
2248         public function getEditButtons(&$tabindex) {
2249                 global $wgLivePreview, $wgUser;
2250
2251                 $buttons = array();
2252
2253                 $temp = array(
2254                         'id'        => 'wpSave',
2255                         'name'      => 'wpSave',
2256                         'type'      => 'submit',
2257                         'tabindex'  => ++$tabindex,
2258                         'value'     => wfMsg('savearticle'),
2259                         'accesskey' => wfMsg('accesskey-save'),
2260                         'title'     => wfMsg( 'tooltip-save' ).' ['.wfMsg( 'accesskey-save' ).']',
2261                 );
2262                 $buttons['save'] = Xml::element('input', $temp, '');
2263
2264                 ++$tabindex; // use the same for preview and live preview
2265                 if ( $wgLivePreview && $wgUser->getOption( 'uselivepreview' ) ) {
2266                         $temp = array(
2267                                 'id'        => 'wpPreview',
2268                                 'name'      => 'wpPreview',
2269                                 'type'      => 'submit',
2270                                 'tabindex'  => $tabindex,
2271                                 'value'     => wfMsg('showpreview'),
2272                                 'accesskey' => '',
2273                                 'title'     => wfMsg( 'tooltip-preview' ).' ['.wfMsg( 'accesskey-preview' ).']',
2274                                 'style'     => 'display: none;',
2275                         );
2276                         $buttons['preview'] = Xml::element('input', $temp, '');
2277
2278                         $temp = array(
2279                                 'id'        => 'wpLivePreview',
2280                                 'name'      => 'wpLivePreview',
2281                                 'type'      => 'submit',
2282                                 'tabindex'  => $tabindex,
2283                                 'value'     => wfMsg('showlivepreview'),
2284                                 'accesskey' => wfMsg('accesskey-preview'),
2285                                 'title'     => '',
2286                                 'onclick'   => $this->doLivePreviewScript(),
2287                         );
2288                         $buttons['live'] = Xml::element('input', $temp, '');
2289                 } else {
2290                         $temp = array(
2291                                 'id'        => 'wpPreview',
2292                                 'name'      => 'wpPreview',
2293                                 'type'      => 'submit',
2294                                 'tabindex'  => $tabindex,
2295                                 'value'     => wfMsg('showpreview'),
2296                                 'accesskey' => wfMsg('accesskey-preview'),
2297                                 'title'     => wfMsg( 'tooltip-preview' ).' ['.wfMsg( 'accesskey-preview' ).']',
2298                         );
2299                         $buttons['preview'] = Xml::element('input', $temp, '');
2300                         $buttons['live'] = '';
2301                 }
2302
2303                 $temp = array(
2304                         'id'        => 'wpDiff',
2305                         'name'      => 'wpDiff',
2306                         'type'      => 'submit',
2307                         'tabindex'  => ++$tabindex,
2308                         'value'     => wfMsg('showdiff'),
2309                         'accesskey' => wfMsg('accesskey-diff'),
2310                         'title'     => wfMsg( 'tooltip-diff' ).' ['.wfMsg( 'accesskey-diff' ).']',
2311                 );
2312                 $buttons['diff'] = Xml::element('input', $temp, '');
2313
2314                 wfRunHooks( 'EditPageBeforeEditButtons', array( &$this, &$buttons, &$tabindex ) );
2315                 return $buttons;
2316         }
2317
2318         /**
2319          * Output preview text only. This can be sucked into the edit page
2320          * via JavaScript, and saves the server time rendering the skin as
2321          * well as theoretically being more robust on the client (doesn't
2322          * disturb the edit box's undo history, won't eat your text on
2323          * failure, etc).
2324          *
2325          * @todo This doesn't include category or interlanguage links.
2326          *       Would need to enhance it a bit, <s>maybe wrap them in XML
2327          *       or something...</s> that might also require more skin
2328          *       initialization, so check whether that's a problem.
2329          */
2330         function livePreview() {
2331                 global $wgOut;
2332                 $wgOut->disable();
2333                 header( 'Content-type: text/xml; charset=utf-8' );
2334                 header( 'Cache-control: no-cache' );
2335
2336                 $previewText = $this->getPreviewText();
2337                 #$categories = $skin->getCategoryLinks();
2338
2339                 $s =
2340                 '<?xml version="1.0" encoding="UTF-8" ?>' . "\n" .
2341                 Xml::tags( 'livepreview', null,
2342                         Xml::element( 'preview', null, $previewText )
2343                         #.      Xml::element( 'category', null, $categories )
2344                 );
2345                 echo $s;
2346         }
2347
2348
2349         /**
2350          * Get a diff between the current contents of the edit box and the
2351          * version of the page we're editing from.
2352          *
2353          * If this is a section edit, we'll replace the section as for final
2354          * save and then make a comparison.
2355          */
2356         function showDiff() {
2357                 $oldtext = $this->mArticle->fetchContent();
2358                 $newtext = $this->mArticle->replaceSection(
2359                         $this->section, $this->textbox1, $this->summary, $this->edittime );
2360                 $newtext = $this->mArticle->preSaveTransform( $newtext );
2361                 $oldtitle = wfMsgExt( 'currentrev', array('parseinline') );
2362                 $newtitle = wfMsgExt( 'yourtext', array('parseinline') );
2363                 if ( $oldtext !== false  || $newtext != '' ) {
2364                         $de = new DifferenceEngine( $this->mTitle );
2365                         $de->setText( $oldtext, $newtext );
2366                         $difftext = $de->getDiff( $oldtitle, $newtitle );
2367                         $de->showDiffStyle();
2368                 } else {
2369                         $difftext = '';
2370                 }
2371
2372                 global $wgOut;
2373                 $wgOut->addHTML( '<div id="wikiDiff">' . $difftext . '</div>' );
2374         }
2375
2376         /**
2377          * Filter an input field through a Unicode de-armoring process if it
2378          * came from an old browser with known broken Unicode editing issues.
2379          *
2380          * @param WebRequest $request
2381          * @param string $field
2382          * @return string
2383          * @private
2384          */
2385         function safeUnicodeInput( $request, $field ) {
2386                 $text = rtrim( $request->getText( $field ) );
2387                 return $request->getBool( 'safemode' )
2388                         ? $this->unmakesafe( $text )
2389                         : $text;
2390         }
2391
2392         /**
2393          * Filter an output field through a Unicode armoring process if it is
2394          * going to an old browser with known broken Unicode editing issues.
2395          *
2396          * @param string $text
2397          * @return string
2398          * @private
2399          */
2400         function safeUnicodeOutput( $text ) {
2401                 global $wgContLang;
2402                 $codedText = $wgContLang->recodeForEdit( $text );
2403                 return $this->checkUnicodeCompliantBrowser()
2404                         ? $codedText
2405                         : $this->makesafe( $codedText );
2406         }
2407
2408         /**
2409          * A number of web browsers are known to corrupt non-ASCII characters
2410          * in a UTF-8 text editing environment. To protect against this,
2411          * detected browsers will be served an armored version of the text,
2412          * with non-ASCII chars converted to numeric HTML character references.
2413          *
2414          * Preexisting such character references will have a 0 added to them
2415          * to ensure that round-trips do not alter the original data.
2416          *
2417          * @param string $invalue
2418          * @return string
2419          * @private
2420          */
2421         function makesafe( $invalue ) {
2422                 // Armor existing references for reversability.
2423                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
2424
2425                 $bytesleft = 0;
2426                 $result = "";
2427                 $working = 0;
2428                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
2429                         $bytevalue = ord( $invalue{$i} );
2430                         if ( $bytevalue <= 0x7F ) { //0xxx xxxx
2431                                 $result .= chr( $bytevalue );
2432                                 $bytesleft = 0;
2433                         } elseif ( $bytevalue <= 0xBF ) { //10xx xxxx
2434                                 $working = $working << 6;
2435                                 $working += ($bytevalue & 0x3F);
2436                                 $bytesleft--;
2437                                 if ( $bytesleft <= 0 ) {
2438                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
2439                                 }
2440                         } elseif ( $bytevalue <= 0xDF ) { //110x xxxx
2441                                 $working = $bytevalue & 0x1F;
2442                                 $bytesleft = 1;
2443                         } elseif ( $bytevalue <= 0xEF ) { //1110 xxxx
2444                                 $working = $bytevalue & 0x0F;
2445                                 $bytesleft = 2;
2446                         } else { //1111 0xxx
2447                                 $working = $bytevalue & 0x07;
2448                                 $bytesleft = 3;
2449                         }
2450                 }
2451                 return $result;
2452         }
2453
2454         /**
2455          * Reverse the previously applied transliteration of non-ASCII characters
2456          * back to UTF-8. Used to protect data from corruption by broken web browsers
2457          * as listed in $wgBrowserBlackList.
2458          *
2459          * @param string $invalue
2460          * @return string
2461          * @private
2462          */
2463         function unmakesafe( $invalue ) {
2464                 $result = "";
2465                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
2466                         if ( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue{$i+3} != '0' ) ) {
2467                                 $i += 3;
2468                                 $hexstring = "";
2469                                 do {
2470                                         $hexstring .= $invalue{$i};
2471                                         $i++;
2472                                 } while( ctype_xdigit( $invalue{$i} ) && ( $i < strlen( $invalue ) ) );
2473
2474                                 // Do some sanity checks. These aren't needed for reversability,
2475                                 // but should help keep the breakage down if the editor
2476                                 // breaks one of the entities whilst editing.
2477                                 if ( (substr($invalue,$i,1)==";") and (strlen($hexstring) <= 6) ) {
2478                                         $codepoint = hexdec($hexstring);
2479                                         $result .= codepointToUtf8( $codepoint );
2480                                 } else {
2481                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
2482                                 }
2483                         } else {
2484                                 $result .= substr( $invalue, $i, 1 );
2485                         }
2486                 }
2487                 // reverse the transform that we made for reversability reasons.
2488                 return strtr( $result, array( "&#x0" => "&#x" ) );
2489         }
2490
2491         function noCreatePermission() {
2492                 global $wgOut;
2493                 $wgOut->setPageTitle( wfMsg( 'nocreatetitle' ) );
2494                 $wgOut->addWikiMsg( 'nocreatetext' );
2495         }
2496
2497         /**
2498          * If there are rows in the deletion/move log for this page, show them,
2499          * along with a nice little note for the user
2500          *
2501          * @param OutputPage $out
2502          */
2503         protected function showLogs( $out ) {
2504                 global $wgUser;
2505                 $loglist = new LogEventsList( $wgUser->getSkin(), $out );
2506                 $pager = new LogPager( $loglist, array('move', 'delete'), false,
2507                         $this->mTitle->getPrefixedText(), '', array( "log_action != 'revision'" ) );
2508
2509                 $count = $pager->getNumRows();
2510                 if ( $count > 0 ) {
2511                         $pager->mLimit = 10;
2512                         $out->addHTML( '<div class="mw-warning-with-logexcerpt">' );
2513                         $out->addWikiMsg( 'recreate-moveddeleted-warn' );
2514                         $out->addHTML(
2515                                 $loglist->beginLogEventsList() .
2516                                 $pager->getBody() .
2517                                 $loglist->endLogEventsList()
2518                         );
2519                         if($count > 10){
2520                                 $out->addHTML( $wgUser->getSkin()->link(
2521                                         SpecialPage::getTitleFor( 'Log' ),
2522                                         wfMsgHtml( 'log-fulllog' ),
2523                                         array(),
2524                                         array( 'page' => $this->mTitle->getPrefixedText() ) ) );
2525                         }
2526                         $out->addHTML( '</div>' );
2527                         return true;
2528                 }
2529
2530                 return false;
2531         }
2532
2533         /**
2534          * Attempt submission
2535          * @return bool false if output is done, true if the rest of the form should be displayed
2536          */
2537         function attemptSave() {
2538                 global $wgUser, $wgOut, $wgTitle, $wgRequest;
2539
2540                 $resultDetails = false;
2541                 # Allow bots to exempt some edits from bot flagging
2542                 $bot = $wgUser->isAllowed('bot') && $wgRequest->getBool('bot',true);
2543                 $value = $this->internalAttemptSave( $resultDetails, $bot );
2544
2545                 if ( $value == self::AS_SUCCESS_UPDATE || $value == self::AS_SUCCESS_NEW_ARTICLE ) {
2546                         $this->didSave = true;
2547                 }
2548
2549                 switch ($value) {
2550                         case self::AS_HOOK_ERROR_EXPECTED:
2551                         case self::AS_CONTENT_TOO_BIG:
2552                         case self::AS_ARTICLE_WAS_DELETED:
2553                         case self::AS_CONFLICT_DETECTED:
2554                         case self::AS_SUMMARY_NEEDED:
2555                         case self::AS_TEXTBOX_EMPTY:
2556                         case self::AS_MAX_ARTICLE_SIZE_EXCEEDED:
2557                         case self::AS_END:
2558                                 return true;
2559
2560                         case self::AS_HOOK_ERROR:
2561                         case self::AS_FILTERING:
2562                         case self::AS_SUCCESS_NEW_ARTICLE:
2563                         case self::AS_SUCCESS_UPDATE:
2564                                 return false;
2565
2566                         case self::AS_SPAM_ERROR:
2567                                 $this->spamPage ( $resultDetails['spam'] );
2568                                 return false;
2569
2570                         case self::AS_BLOCKED_PAGE_FOR_USER:
2571                                 $this->blockedPage();
2572                                 return false;
2573
2574                         case self::AS_IMAGE_REDIRECT_ANON:
2575                                 $wgOut->showErrorPage( 'uploadnologin', 'uploadnologintext' );
2576                                 return false;
2577
2578                         case self::AS_READ_ONLY_PAGE_ANON:
2579                                 $this->userNotLoggedInPage();
2580                                 return false;
2581
2582                         case self::AS_READ_ONLY_PAGE_LOGGED:
2583                         case self::AS_READ_ONLY_PAGE:
2584                                 $wgOut->readOnlyPage();
2585                                 return false;
2586
2587                         case self::AS_RATE_LIMITED:
2588                                 $wgOut->rateLimited();
2589                                 return false;
2590
2591                         case self::AS_NO_CREATE_PERMISSION;
2592                                 $this->noCreatePermission();
2593                                 return;
2594
2595                         case self::AS_BLANK_ARTICLE:
2596                                 $wgOut->redirect( $wgTitle->getFullURL() );
2597                                 return false;
2598
2599                         case self::AS_IMAGE_REDIRECT_LOGGED:
2600                                 $wgOut->permissionRequired( 'upload' );
2601                                 return false;
2602                 }
2603         }
2604
2605         function getBaseRevision() {
2606                 if ( $this->mBaseRevision == false ) {
2607                         $db = wfGetDB( DB_MASTER );
2608                         $baseRevision = Revision::loadFromTimestamp(
2609                                 $db, $this->mTitle, $this->edittime );
2610                         return $this->mBaseRevision = $baseRevision;
2611                 } else {
2612                         return $this->mBaseRevision;
2613                 }
2614         }
2615 }