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 $isCssSubpage = false;
  52         var $isJsSubpage = false;
  53         var $deletedSinceEdit = false;
  54         var $formtype;
  55         var $firsttime;
  56         var $lastDelete;
  57         var $mTokenOk = false;
  58         var $mTokenOkExceptSuffix = false;
  59         var $mTriedSave = false;
  60         var $tooBig = false;
  61         var $kblength = false;
  62         var $missingComment = false;
  63         var $missingSummary = false;
  64         var $allowBlankSummary = false;
  65         var $autoSumm = '';
  66         var $hookError = '';
  67         #var $mPreviewTemplates;
  68         var $mParserOutput;
  69         var $mBaseRevision = false;
  70
  71         # Form values
  72         var $save = false, $preview = false, $diff = false;
  73         var $minoredit = false, $watchthis = false, $recreate = false;
  74         var $textbox1 = '', $textbox2 = '', $summary = '';
  75         var $edittime = '', $section = '', $starttime = '';
  76         var $oldid = 0, $editintro = '', $scrolltop = null;
  77
  78         # Placeholders for text injection by hooks (must be HTML)
  79         # extensions should take care to _append_ to the present value
  80         public $editFormPageTop; // Before even the preview
  81         public $editFormTextTop;
  82         public $editFormTextBeforeContent;
  83         public $editFormTextAfterWarn;
  84         public $editFormTextAfterTools;
  85         public $editFormTextBottom;
  86
  87         /* $didSave should be set to true whenever an article was succesfully altered. */
  88         public $didSave = false;
  89         public $undidRev = 0;
  90
  91         public $suppressIntro = false;
  92
  93         /**
  94          * @todo document
  95          * @param $article
  96          */
  97         function EditPage( $article ) {
  98                 $this->mArticle =& $article;
  99                 $this->mTitle = $article->getTitle();
 100                 $this->action = 'submit';
 101
 102                 # Placeholders for text injection by hooks (empty per default)
 103                 $this->editFormPageTop =
 104                 $this->editFormTextTop =
 105                 $this->editFormTextBeforeContent =
 106                 $this->editFormTextAfterWarn =
 107                 $this->editFormTextAfterTools =
 108                 $this->editFormTextBottom =
 109                 $this->mPreloadText = "";
 110         }
 111
 112         function getArticle() {
 113                 return $this->mArticle;
 114         }
 115
 116
 117         /**
 118          * Fetch initial editing page content.
 119          * @private
 120          */
 121         function getContent( $def_text = '' ) {
 122                 global $wgOut, $wgRequest, $wgParser, $wgContLang, $wgMessageCache;
 123
 124                 wfProfileIn( __METHOD__ );
 125                 # Get variables from query string :P
 126                 $section = $wgRequest->getVal( 'section' );
 127                 $preload = $wgRequest->getVal( 'preload' );
 128                 $undoafter = $wgRequest->getVal( 'undoafter' );
 129                 $undo = $wgRequest->getVal( 'undo' );
 130
 131                 $text = '';
 132                 // For message page not locally set, use the i18n message.
 133                 // For other non-existent articles, use preload text if any.
 134                 if ( !$this->mTitle->exists() ) {
 135                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
 136                                 # If this is a system message, get the default text.
 137                                 list( $message, $lang ) = $wgMessageCache->figureMessage( $wgContLang->lcfirst( $this->mTitle->getText() ) );
 138                                 $wgMessageCache->loadAllMessages( $lang );
 139                                 $text = wfMsgGetKey( $message, false, $lang, false );
 140                                 if( wfEmptyMsg( $message, $text ) )
 141                                         $text = '';
 142                         } else {
 143                                 # If requested, preload some text.
 144                                 $text = $this->getPreloadedText( $preload );
 145                         }
 146                 // For existing pages, get text based on "undo" or section parameters.
 147                 } else {
 148                         $text = $this->mArticle->getContent();
 149                         if ( $undo > 0 && $undoafter > 0 && $undo < $undoafter ) {
 150                                 # If they got undoafter and undo round the wrong way, switch them
 151                                 list( $undo, $undoafter ) = array( $undoafter, $undo );
 152                         }
 153                         if ( $undo > 0 && $undo > $undoafter ) {
 154                                 # Undoing a specific edit overrides section editing; section-editing
 155                                 # doesn't work with undoing.
 156                                 if ( $undoafter ) {
 157                                         $undorev = Revision::newFromId($undo);
 158                                         $oldrev = Revision::newFromId($undoafter);
 159                                 } else {
 160                                         $undorev = Revision::newFromId($undo);
 161                                         $oldrev = $undorev ? $undorev->getPrevious() : null;
 162                                 }
 163
 164                                 # Sanity check, make sure it's the right page,
 165                                 # the revisions exist and they were not deleted.
 166                                 # Otherwise, $text will be left as-is.
 167                                 if ( !is_null( $undorev ) && !is_null( $oldrev ) &&
 168                                         $undorev->getPage() == $oldrev->getPage() &&
 169                                         $undorev->getPage() == $this->mArticle->getID() &&
 170                                         !$undorev->isDeleted( Revision::DELETED_TEXT ) &&
 171                                         !$oldrev->isDeleted( Revision::DELETED_TEXT ) ) {
 172
 173                                         $undotext = $this->mArticle->getUndoText( $undorev, $oldrev );
 174                                         if ( $undotext === false ) {
 175                                                 # Warn the user that something went wrong
 176                                                 $this->editFormPageTop .= $wgOut->parse( '<div class="error mw-undo-failure">' . wfMsgNoTrans( 'undo-failure' ) . '</div>' );
 177                                         } else {
 178                                                 $text = $undotext;
 179                                                 # Inform the user of our success and set an automatic edit summary
 180                                                 $this->editFormPageTop .= $wgOut->parse( '<div class="mw-undo-success">' . wfMsgNoTrans( 'undo-success' ) . '</div>' );
 181                                                 $firstrev = $oldrev->getNext();
 182                                                 # If we just undid one rev, use an autosummary
 183                                                 if ( $firstrev->mId == $undo ) {
 184                                                         $this->summary = wfMsgForContent( 'undo-summary', $undo, $undorev->getUserText() );
 185                                                         $this->undidRev = $undo;
 186                                                 }
 187                                                 $this->formtype = 'diff';
 188                                         }
 189                                 } else {
 190                                         // Failed basic sanity checks.
 191                                         // Older revisions may have been removed since the link
 192                                         // was created, or we may simply have got bogus input.
 193                                         $this->editFormPageTop .= $wgOut->parse( '<div class="error mw-undo-norev">' . wfMsgNoTrans( 'undo-norev' ) . '</div>' );
 194                                 }
 195                         } else if ( $section != '' ) {
 196                                 if ( $section == 'new' ) {
 197                                         $text = $this->getPreloadedText( $preload );
 198                                 } else {
 199                                         $text = $wgParser->getSection( $text, $section, $def_text );
 200                                 }
 201                         }
 202                 }
 203
 204                 wfProfileOut( __METHOD__ );
 205                 return $text;
 206         }
 207
 208         /** Use this method before edit() to preload some text into the edit box */
 209         public function setPreloadedText( $text ) {
 210                 $this->mPreloadText = $text;
 211         }
 212
 213         /**
 214          * Get the contents of a page from its title and remove includeonly tags
 215          *
 216          * @param $preload String: the title of the page.
 217          * @return string The contents of the page.
 218          */
 219         protected function getPreloadedText( $preload ) {
 220                 if ( !empty($this->mPreloadText) ) {
 221                         return $this->mPreloadText;
 222                 } elseif ( $preload === '' ) {
 223                         return '';
 224                 } else {
 225                         $preloadTitle = Title::newFromText( $preload );
 226                         if ( isset( $preloadTitle ) && $preloadTitle->userCanRead() ) {
 227                                 $rev = Revision::newFromTitle($preloadTitle);
 228                                 if ( is_object( $rev ) ) {
 229                                         $text = $rev->getText();
 230                                         // TODO FIXME: AAAAAAAAAAA, this shouldn't be implementing
 231                                         // its own mini-parser! -ævar
 232                                         $text = preg_replace( '~</?includeonly>~', '', $text );
 233                                         return $text;
 234                                 } else
 235                                         return '';
 236                         }
 237                 }
 238         }
 239
 240         /**
 241          * This is the function that extracts metadata from the article body on the first view.
 242          * To turn the feature on, set $wgUseMetadataEdit = true ; in LocalSettings
 243          *  and set $wgMetadataWhitelist to the *full* title of the template whitelist
 244          */
 245         function extractMetaDataFromArticle () {
 246                 global $wgUseMetadataEdit, $wgMetadataWhitelist, $wgContLang;
 247                 $this->mMetaData = '';
 248                 if ( !$wgUseMetadataEdit ) return;
 249                 if ( $wgMetadataWhitelist == '' ) return;
 250                 $s = '';
 251                 $t = $this->getContent();
 252
 253                 # MISSING : <nowiki> filtering
 254
 255                 # Categories and language links
 256                 $t = explode ( "\n" , $t );
 257                 $catlow = strtolower ( $wgContLang->getNsText( NS_CATEGORY ) );
 258                 $cat = $ll = array();
 259                 foreach ( $t AS $key => $x ) {
 260                         $y = trim ( strtolower ( $x ) );
 261                         while ( substr ( $y , 0 , 2 ) == '[[' ) {
 262                                 $y = explode ( ']]' , trim ( $x ) );
 263                                 $first = array_shift ( $y );
 264                                 $first = explode ( ':' , $first );
 265                                 $ns = array_shift ( $first );
 266                                 $ns = trim ( str_replace ( '[' , '' , $ns ) );
 267                                 if ( $wgContLang->getLanguageName( $ns ) || strtolower ( $ns ) == $catlow ) {
 268                                         $add = '[[' . $ns . ':' . implode ( ':' , $first ) . ']]';
 269                                         if ( strtolower ( $ns ) == $catlow ) $cat[] = $add;
 270                                         else $ll[] = $add;
 271                                         $x = implode ( ']]' , $y );
 272                                         $t[$key] = $x;
 273                                         $y = trim ( strtolower ( $x ) );
 274                                 } else {
 275                                         $x = implode ( ']]' , $y );
 276                                         $y = trim ( strtolower ( $x ) );
 277                                 }
 278                         }
 279                 }
 280                 if ( count ( $cat ) ) $s .= implode ( ' ' , $cat ) . "\n";
 281                 if ( count ( $ll ) ) $s .= implode ( ' ' , $ll ) . "\n";
 282                 $t = implode ( "\n" , $t );
 283
 284                 # Load whitelist
 285                 $sat = array () ; # stand-alone-templates; must be lowercase
 286                 $wl_title = Title::newFromText ( $wgMetadataWhitelist );
 287                 $wl_article = new Article ( $wl_title );
 288                 $wl = explode ( "\n" , $wl_article->getContent() );
 289                 foreach ( $wl AS $x ) {
 290                         $isentry = false;
 291                         $x = trim ( $x );
 292                         while ( substr ( $x , 0 , 1 ) == '*' ) {
 293                                 $isentry = true;
 294                                 $x = trim ( substr ( $x , 1 ) );
 295                         }
 296                         if ( $isentry ) {
 297                                 $sat[] = strtolower ( $x );
 298                         }
 299
 300                 }
 301
 302                 # Templates, but only some
 303                 $t = explode ( '{{' , $t );
 304                 $tl = array () ;
 305                 foreach ( $t AS $key => $x ) {
 306                         $y = explode ( '}}' , $x , 2 );
 307                         if ( count ( $y ) == 2 ) {
 308                                 $z = $y[0];
 309                                 $z = explode ( '|' , $z );
 310                                 $tn = array_shift ( $z );
 311                                 if ( in_array ( strtolower ( $tn ) , $sat ) ) {
 312                                         $tl[] = '{{' . $y[0] . '}}';
 313                                         $t[$key] = $y[1];
 314                                         $y = explode ( '}}' , $y[1] , 2 );
 315                                 }
 316                                 else $t[$key] = '{{' . $x;
 317                         }
 318                         else if ( $key != 0 ) $t[$key] = '{{' . $x;
 319                         else $t[$key] = $x;
 320                 }
 321                 if ( count ( $tl ) ) $s .= implode ( ' ' , $tl );
 322                 $t = implode ( '' , $t );
 323
 324                 $t = str_replace ( "\n\n\n" , "\n" , $t );
 325                 $this->mArticle->mContent = $t;
 326                 $this->mMetaData = $s;
 327         }
 328
 329         /*
 330          * Check if a page was deleted while the user was editing it, before submit.
 331          * Note that we rely on the logging table, which hasn't been always there,
 332          * but that doesn't matter, because this only applies to brand new
 333          * deletes.
 334          */
 335         protected function wasDeletedSinceLastEdit() {
 336                 if ( $this->deletedSinceEdit )
 337                         return true;
 338                 if ( $this->mTitle->isDeletedQuick() ) {
 339                         $this->lastDelete = $this->getLastDelete();
 340                         if ( $this->lastDelete ) {
 341                                 $deleteTime = wfTimestamp( TS_MW, $this->lastDelete->log_timestamp );
 342                                 if ( $deleteTime > $this->starttime ) {
 343                                         $this->deletedSinceEdit = true;
 344                                 }
 345                         }
 346                 }
 347                 return $this->deletedSinceEdit;
 348         }
 349
 350         function submit() {
 351                 $this->edit();
 352         }
 353
 354         /**
 355          * This is the function that gets called for "action=edit". It
 356          * sets up various member variables, then passes execution to
 357          * another function, usually showEditForm()
 358          *
 359          * The edit form is self-submitting, so that when things like
 360          * preview and edit conflicts occur, we get the same form back
 361          * with the extra stuff added.  Only when the final submission
 362          * is made and all is well do we actually save and redirect to
 363          * the newly-edited page.
 364          */
 365         function edit() {
 366                 global $wgOut, $wgRequest, $wgEnableJS2system;
 367                 // Allow extensions to modify/prevent this form or submission
 368                 if ( !wfRunHooks( 'AlternateEdit', array( $this ) ) ) {
 369                         return;
 370                 }
 371
 372                 wfProfileIn( __METHOD__ );
 373                 wfDebug( __METHOD__.": enter\n" );
 374
 375                 // This is not an article
 376                 $wgOut->setArticleFlag( false );
 377
 378                 $this->importFormData( $wgRequest );
 379                 $this->firsttime = false;
 380
 381                 if ( $this->live ) {
 382                         $this->livePreview();
 383                         wfProfileOut( __METHOD__ );
 384                         return;
 385                 }
 386
 387                 if ( wfReadOnly() && $this->save ) {
 388                                 // Force preview
 389                                 $this->save = false;
 390                                 $this->preview = true;
 391                 }
 392
 393                 $wgOut->addScriptFile( 'edit.js' );
 394
 395                 if($wgEnableJS2system)
 396                     $wgOut->addScriptClass( 'editPage' );
 397
 398                 $permErrors = $this->getEditPermissionErrors();
 399                 if ( $permErrors ) {
 400                         wfDebug( __METHOD__.": User can't edit\n" );
 401                         $this->readOnlyPage( $this->getContent(), true, $permErrors, 'edit' );
 402                         wfProfileOut( __METHOD__ );
 403                         return;
 404                 } else {
 405                         if ( $this->save ) {
 406                                 $this->formtype = 'save';
 407                         } else if ( $this->preview ) {
 408                                 $this->formtype = 'preview';
 409                         } else if ( $this->diff ) {
 410                                 $this->formtype = 'diff';
 411                         } else { # First time through
 412                                 $this->firsttime = true;
 413                                 if ( $this->previewOnOpen() ) {
 414                                         $this->formtype = 'preview';
 415                                 } else {
 416                                         $this->extractMetaDataFromArticle () ;
 417                                         $this->formtype = 'initial';
 418                                 }
 419                         }
 420                 }
 421
 422                 // If they used redlink=1 and the page exists, redirect to the main article
 423                 if ( $wgRequest->getBool( 'redlink' ) && $this->mTitle->exists() ) {
 424                         $wgOut->redirect( $this->mTitle->getFullURL() );
 425                 }
 426
 427                 wfProfileIn( __METHOD__."-business-end" );
 428
 429                 $this->isConflict = false;
 430                 // css / js subpages of user pages get a special treatment
 431                 $this->isCssJsSubpage      = $this->mTitle->isCssJsSubpage();
 432                 $this->isCssSubpage        = $this->mTitle->isCssSubpage();
 433                 $this->isJsSubpage         = $this->mTitle->isJsSubpage();
 434                 $this->isValidCssJsSubpage = $this->mTitle->isValidCssJsSubpage();
 435
 436                 # Show applicable editing introductions
 437                 if ( $this->formtype == 'initial' || $this->firsttime )
 438                         $this->showIntro();
 439
 440                 if ( $this->mTitle->isTalkPage() ) {
 441                         $wgOut->addWikiMsg( 'talkpagetext' );
 442                 }
 443
 444                 # Optional notices on a per-namespace and per-page basis
 445                 $editnotice_ns   = 'editnotice-'.$this->mTitle->getNamespace();
 446                 if ( !wfEmptyMsg( $editnotice_ns, wfMsgForContent( $editnotice_ns ) ) ) {
 447                         $wgOut->addWikiText( wfMsgForContent( $editnotice_ns )  );
 448                 }
 449                 if ( MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
 450                         $parts = explode( '/', $this->mTitle->getDBkey() );
 451                         $editnotice_base = $editnotice_ns;
 452                         while ( count( $parts ) > 0 ) {
 453                                 $editnotice_base .= '-'.array_shift( $parts );
 454                                 if ( !wfEmptyMsg( $editnotice_base, wfMsgForContent( $editnotice_base ) ) ) {
 455                                         $wgOut->addWikiText( wfMsgForContent( $editnotice_base )  );
 456                                 }
 457                         }
 458                 }
 459
 460                 # Attempt submission here.  This will check for edit conflicts,
 461                 # and redundantly check for locked database, blocked IPs, etc.
 462                 # that edit() already checked just in case someone tries to sneak
 463                 # in the back door with a hand-edited submission URL.
 464
 465                 if ( 'save' == $this->formtype ) {
 466                         if ( !$this->attemptSave() ) {
 467                                 wfProfileOut( __METHOD__."-business-end" );
 468                                 wfProfileOut( __METHOD__ );
 469                                 return;
 470                         }
 471                 }
 472
 473                 # First time through: get contents, set time for conflict
 474                 # checking, etc.
 475                 if ( 'initial' == $this->formtype || $this->firsttime ) {
 476                         if ( $this->initialiseForm() === false) {
 477                                 $this->noSuchSectionPage();
 478                                 wfProfileOut( __METHOD__."-business-end" );
 479                                 wfProfileOut( __METHOD__ );
 480                                 return;
 481                         }
 482                         if ( !$this->mTitle->getArticleId() )
 483                                 wfRunHooks( 'EditFormPreloadText', array( &$this->textbox1, &$this->mTitle ) );
 484                 }
 485
 486                 $this->showEditForm();
 487                 wfProfileOut( __METHOD__."-business-end" );
 488                 wfProfileOut( __METHOD__ );
 489         }
 490
 491         protected function getEditPermissionErrors() {
 492                 global $wgUser;
 493                 $permErrors = $this->mTitle->getUserPermissionsErrors( 'edit', $wgUser );
 494                 # Can this title be created?
 495                 if ( !$this->mTitle->exists() ) {
 496                         $permErrors = array_merge( $permErrors,
 497                                 wfArrayDiff2( $this->mTitle->getUserPermissionsErrors( 'create', $wgUser ), $permErrors ) );
 498                 }
 499                 # Ignore some permissions errors when a user is just previewing/viewing diffs
 500                 $remove = array();
 501                 foreach( $permErrors as $error ) {
 502                         if ( ($this->preview || $this->diff) &&
 503                                 ($error[0] == 'blockedtext' || $error[0] == 'autoblockedtext') )
 504                         {
 505                                 $remove[] = $error;
 506                         }
 507                 }
 508                 $permErrors = wfArrayDiff2( $permErrors, $remove );
 509                 return $permErrors;
 510         }
 511
 512         /**
 513          * Show a read-only error
 514          * Parameters are the same as OutputPage:readOnlyPage()
 515          * Redirect to the article page if redlink=1
 516          */
 517         function readOnlyPage( $source = null, $protected = false, $reasons = array(), $action = null ) {
 518                 global $wgRequest, $wgOut;
 519                 if ( $wgRequest->getBool( 'redlink' ) ) {
 520                         // The edit page was reached via a red link.
 521                         // Redirect to the article page and let them click the edit tab if
 522                         // they really want a permission error.
 523                         $wgOut->redirect( $this->mTitle->getFullUrl() );
 524                 } else {
 525                         $wgOut->readOnlyPage( $source, $protected, $reasons, $action );
 526                 }
 527         }
 528
 529         /**
 530          * Should we show a preview when the edit form is first shown?
 531          *
 532          * @return bool
 533          */
 534         protected function previewOnOpen() {
 535                 global $wgRequest, $wgUser;
 536                 if ( $wgRequest->getVal( 'preview' ) == 'yes' ) {
 537                         // Explicit override from request
 538                         return true;
 539                 } elseif ( $wgRequest->getVal( 'preview' ) == 'no' ) {
 540                         // Explicit override from request
 541                         return false;
 542                 } elseif ( $this->section == 'new' ) {
 543                         // Nothing *to* preview for new sections
 544                         return false;
 545                 } elseif ( ( $wgRequest->getVal( 'preload' ) !== null || $this->mTitle->exists() ) && $wgUser->getOption( 'previewonfirst' ) ) {
 546                         // Standard preference behaviour
 547                         return true;
 548                 } elseif ( !$this->mTitle->exists() && $this->mTitle->getNamespace() == NS_CATEGORY ) {
 549                         // Categories are special
 550                         return true;
 551                 } else {
 552                         return false;
 553                 }
 554         }
 555
 556         /**
 557          * @todo document
 558          * @param $request
 559          */
 560         function importFormData( &$request ) {
 561                 global $wgLang, $wgUser;
 562                 $fname = 'EditPage::importFormData';
 563                 wfProfileIn( $fname );
 564
 565                 # Section edit can come from either the form or a link
 566                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 567
 568                 if ( $request->wasPosted() ) {
 569                         # These fields need to be checked for encoding.
 570                         # Also remove trailing whitespace, but don't remove _initial_
 571                         # whitespace from the text boxes. This may be significant formatting.
 572                         $this->textbox1 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
 573                         $this->textbox2 = $this->safeUnicodeInput( $request, 'wpTextbox2' );
 574                         $this->mMetaData = rtrim( $request->getText( 'metadata' ) );
 575                         # Truncate for whole multibyte characters. +5 bytes for ellipsis
 576                         $this->summary = $wgLang->truncate( $request->getText( 'wpSummary' ), 250, '' );
 577
 578                         # Remove extra headings from summaries and new sections.
 579                         $this->summary = preg_replace('/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->summary);
 580
 581                         $this->edittime = $request->getVal( 'wpEdittime' );
 582                         $this->starttime = $request->getVal( 'wpStarttime' );
 583
 584                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 585
 586                         if ( is_null( $this->edittime ) ) {
 587                                 # If the form is incomplete, force to preview.
 588                                 wfDebug( "$fname: Form data appears to be incomplete\n" );
 589                                 wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
 590                                 $this->preview = true;
 591                         } else {
 592                                 /* Fallback for live preview */
 593                                 $this->preview = $request->getCheck( 'wpPreview' ) || $request->getCheck( 'wpLivePreview' );
 594                                 $this->diff = $request->getCheck( 'wpDiff' );
 595
 596                                 // Remember whether a save was requested, so we can indicate
 597                                 // if we forced preview due to session failure.
 598                                 $this->mTriedSave = !$this->preview;
 599
 600                                 if ( $this->tokenOk( $request ) ) {
 601                                         # Some browsers will not report any submit button
 602                                         # if the user hits enter in the comment box.
 603                                         # The unmarked state will be assumed to be a save,
 604                                         # if the form seems otherwise complete.
 605                                         wfDebug( "$fname: Passed token check.\n" );
 606                                 } else if ( $this->diff ) {
 607                                         # Failed token check, but only requested "Show Changes".
 608                                         wfDebug( "$fname: Failed token check; Show Changes requested.\n" );
 609                                 } else {
 610                                         # Page might be a hack attempt posted from
 611                                         # an external site. Preview instead of saving.
 612                                         wfDebug( "$fname: Failed token check; forcing preview\n" );
 613                                         $this->preview = true;
 614                                 }
 615                         }
 616                         $this->save = !$this->preview && !$this->diff;
 617                         if ( !preg_match( '/^\d{14}$/', $this->edittime )) {
 618                                 $this->edittime = null;
 619                         }
 620
 621                         if ( !preg_match( '/^\d{14}$/', $this->starttime )) {
 622                                 $this->starttime = null;
 623                         }
 624
 625                         $this->recreate  = $request->getCheck( 'wpRecreate' );
 626
 627                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 628                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 629
 630                         # Don't force edit summaries when a user is editing their own user or talk page
 631                         if ( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK ) &&
 632                                 $this->mTitle->getText() == $wgUser->getName() )
 633                         {
 634                                 $this->allowBlankSummary = true;
 635                         } else {
 636                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' ) || !$wgUser->getOption( 'forceeditsummary');
 637                         }
 638
 639                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
 640                 } else {
 641                         # Not a posted form? Start with nothing.
 642                         wfDebug( "$fname: Not a posted form.\n" );
 643                         $this->textbox1  = '';
 644                         $this->textbox2  = '';
 645                         $this->mMetaData = '';
 646                         $this->summary   = '';
 647                         $this->edittime  = '';
 648                         $this->starttime = wfTimestampNow();
 649                         $this->edit      = false;
 650                         $this->preview   = false;
 651                         $this->save      = false;
 652                         $this->diff      = false;
 653                         $this->minoredit = false;
 654                         $this->watchthis = false;
 655                         $this->recreate  = false;
 656
 657                         if ( $this->section == 'new' && $request->getVal( 'preloadtitle' ) ) {
 658                                 $this->summary = $request->getVal( 'preloadtitle' );
 659                         }
 660                         elseif ( $this->section != 'new' && $request->getVal( 'summary' ) ) {
 661                                 $this->summary = $request->getText( 'summary' );
 662                         }
 663
 664                         if ( $request->getVal( 'minor' ) ) {
 665                                 $this->minoredit = true;
 666                         }
 667                 }
 668
 669                 // FIXME: unused variable?
 670                 $this->oldid = $request->getInt( 'oldid' );
 671
 672                 $this->live = $request->getCheck( 'live' );
 673                 $this->editintro = $request->getText( 'editintro' );
 674
 675                 wfProfileOut( $fname );
 676
 677                 // Allow extensions to modify form data
 678                 wfRunHooks( 'EditPage::importFormData', array( $this, $request ) );
 679         }
 680
 681         /**
 682          * Make sure the form isn't faking a user's credentials.
 683          *
 684          * @param $request WebRequest
 685          * @return bool
 686          * @private
 687          */
 688         function tokenOk( &$request ) {
 689                 global $wgUser;
 690                 $token = $request->getVal( 'wpEditToken' );
 691                 $this->mTokenOk = $wgUser->matchEditToken( $token );
 692                 $this->mTokenOkExceptSuffix = $wgUser->matchEditTokenNoSuffix( $token );
 693                 return $this->mTokenOk;
 694         }
 695
 696         /**
 697          * Show all applicable editing introductions
 698          */
 699         protected function showIntro() {
 700                 global $wgOut, $wgUser;
 701                 if ( $this->suppressIntro ) {
 702                         return;
 703                 }
 704
 705                 $namespace = $this->mTitle->getNamespace();
 706
 707                 if ( $namespace == NS_MEDIAWIKI ) {
 708                         # Show a warning if editing an interface message
 709                         $wgOut->wrapWikiMsg( "<div class='mw-editinginterface'>\n$1</div>", 'editinginterface' );
 710                 }
 711
 712                 # Show a warning message when someone creates/edits a user (talk) page but the user does not exists
 713                 if ( $namespace == NS_USER || $namespace == NS_USER_TALK ) {
 714                         $parts = explode( '/', $this->mTitle->getText(), 2 );
 715                         $username = $parts[0];
 716                         $id = User::idFromName( $username );
 717                         $ip = User::isIP( $username );
 718                         if ( $id == 0 && !$ip ) {
 719                                 $wgOut->wrapWikiMsg( '<div class="mw-userpage-userdoesnotexist error">$1</div>',
 720                                         array( 'userpage-userdoesnotexist', $username ) );
 721                         }
 722                 }
 723                 # Try to add a custom edit intro, or use the standard one if this is not possible.
 724                 if ( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
 725                         if ( $wgUser->isLoggedIn() ) {
 726                                 $wgOut->wrapWikiMsg( '<div class="mw-newarticletext">$1</div>', 'newarticletext' );
 727                         } else {
 728                                 $wgOut->wrapWikiMsg( '<div class="mw-newarticletextanon">$1</div>', 'newarticletextanon' );
 729                         }
 730                 }
 731                 # Give a notice if the user is editing a deleted/moved page...
 732                 if ( !$this->mTitle->exists() ) {
 733                         $this->showLogs( $wgOut );
 734                 }
 735         }
 736
 737         /**
 738          * Attempt to show a custom editing introduction, if supplied
 739          *
 740          * @return bool
 741          */
 742         protected function showCustomIntro() {
 743                 if ( $this->editintro ) {
 744                         $title = Title::newFromText( $this->editintro );
 745                         if ( $title instanceof Title && $title->exists() && $title->userCanRead() ) {
 746                                 global $wgOut;
 747                                 $revision = Revision::newFromTitle( $title );
 748                                 $wgOut->addWikiTextTitleTidy( $revision->getText(), $this->mTitle );
 749                                 return true;
 750                         } else {
 751                                 return false;
 752                         }
 753                 } else {
 754                         return false;
 755                 }
 756         }
 757
 758         /**
 759          * Attempt submission (no UI)
 760          * @return one of the constants describing the result
 761          */
 762         function internalAttemptSave( &$result, $bot = false ) {
 763                 global $wgFilterCallback, $wgUser, $wgOut, $wgParser;
 764                 global $wgMaxArticleSize;
 765
 766                 $fname = 'EditPage::attemptSave';
 767                 wfProfileIn( $fname );
 768                 wfProfileIn( "$fname-checks" );
 769
 770                 if ( !wfRunHooks( 'EditPage::attemptSave', array( $this ) ) )
 771                 {
 772                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving\n" );
 773                         return self::AS_HOOK_ERROR;
 774                 }
 775
 776                 # Check image redirect
 777                 if ( $this->mTitle->getNamespace() == NS_FILE &&
 778                         Title::newFromRedirect( $this->textbox1 ) instanceof Title &&
 779                         !$wgUser->isAllowed( 'upload' ) ) {
 780                                 if ( $wgUser->isAnon() ) {
 781                                         return self::AS_IMAGE_REDIRECT_ANON;
 782                                 } else {
 783                                         return self::AS_IMAGE_REDIRECT_LOGGED;
 784                                 }
 785                 }
 786
 787                 # Reintegrate metadata
 788                 if ( $this->mMetaData != '' ) $this->textbox1 .= "\n" . $this->mMetaData ;
 789                 $this->mMetaData = '' ;
 790
 791                 # Check for spam
 792                 $match = self::matchSummarySpamRegex( $this->summary );
 793                 if ( $match === false ) {
 794                         $match = self::matchSpamRegex( $this->textbox1 );
 795                 }
 796                 if ( $match !== false ) {
 797                         $result['spam'] = $match;
 798                         $ip = wfGetIP();
 799                         $pdbk = $this->mTitle->getPrefixedDBkey();
 800                         $match = str_replace( "\n", '', $match );
 801                         wfDebugLog( 'SpamRegex', "$ip spam regex hit [[$pdbk]]: \"$match\"" );
 802                         wfProfileOut( "$fname-checks" );
 803                         wfProfileOut( $fname );
 804                         return self::AS_SPAM_ERROR;
 805                 }
 806                 if ( $wgFilterCallback && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section, $this->hookError, $this->summary ) ) {
 807                         # Error messages or other handling should be performed by the filter function
 808                         wfProfileOut( "$fname-checks" );
 809                         wfProfileOut( $fname );
 810                         return self::AS_FILTERING;
 811                 }
 812                 if ( !wfRunHooks( 'EditFilter', array( $this, $this->textbox1, $this->section, &$this->hookError, $this->summary ) ) ) {
 813                         # Error messages etc. could be handled within the hook...
 814                         wfProfileOut( "$fname-checks" );
 815                         wfProfileOut( $fname );
 816                         return self::AS_HOOK_ERROR;
 817                 } elseif ( $this->hookError != '' ) {
 818                         # ...or the hook could be expecting us to produce an error
 819                         wfProfileOut( "$fname-checks" );
 820                         wfProfileOut( $fname );
 821                         return self::AS_HOOK_ERROR_EXPECTED;
 822                 }
 823                 if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
 824                         # Check block state against master, thus 'false'.
 825                         wfProfileOut( "$fname-checks" );
 826                         wfProfileOut( $fname );
 827                         return self::AS_BLOCKED_PAGE_FOR_USER;
 828                 }
 829                 $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
 830                 if ( $this->kblength > $wgMaxArticleSize ) {
 831                         // Error will be displayed by showEditForm()
 832                         $this->tooBig = true;
 833                         wfProfileOut( "$fname-checks" );
 834                         wfProfileOut( $fname );
 835                         return self::AS_CONTENT_TOO_BIG;
 836                 }
 837
 838                 if ( !$wgUser->isAllowed('edit') ) {
 839                         if ( $wgUser->isAnon() ) {
 840                                 wfProfileOut( "$fname-checks" );
 841                                 wfProfileOut( $fname );
 842                                 return self::AS_READ_ONLY_PAGE_ANON;
 843                         }
 844                         else {
 845                                 wfProfileOut( "$fname-checks" );
 846                                 wfProfileOut( $fname );
 847                                 return self::AS_READ_ONLY_PAGE_LOGGED;
 848                         }
 849                 }
 850
 851                 if ( wfReadOnly() ) {
 852                         wfProfileOut( "$fname-checks" );
 853                         wfProfileOut( $fname );
 854                         return self::AS_READ_ONLY_PAGE;
 855                 }
 856                 if ( $wgUser->pingLimiter() ) {
 857                         wfProfileOut( "$fname-checks" );
 858                         wfProfileOut( $fname );
 859                         return self::AS_RATE_LIMITED;
 860                 }
 861
 862                 # If the article has been deleted while editing, don't save it without
 863                 # confirmation
 864                 if ( $this->wasDeletedSinceLastEdit() && !$this->recreate ) {
 865                         wfProfileOut( "$fname-checks" );
 866                         wfProfileOut( $fname );
 867                         return self::AS_ARTICLE_WAS_DELETED;
 868                 }
 869
 870                 wfProfileOut( "$fname-checks" );
 871
 872                 # If article is new, insert it.
 873                 $aid = $this->mTitle->getArticleID( GAID_FOR_UPDATE );
 874                 if ( 0 == $aid ) {
 875                         // Late check for create permission, just in case *PARANOIA*
 876                         if ( !$this->mTitle->userCan( 'create' ) ) {
 877                                 wfDebug( "$fname: no create permission\n" );
 878                                 wfProfileOut( $fname );
 879                                 return self::AS_NO_CREATE_PERMISSION;
 880                         }
 881
 882                         # Don't save a new article if it's blank.
 883                         if ( '' == $this->textbox1 ) {
 884                                 wfProfileOut( $fname );
 885                                 return self::AS_BLANK_ARTICLE;
 886                         }
 887
 888                         // Run post-section-merge edit filter
 889                         if ( !wfRunHooks( 'EditFilterMerged', array( $this, $this->textbox1, &$this->hookError, $this->summary ) ) ) {
 890                                 # Error messages etc. could be handled within the hook...
 891                                 wfProfileOut( $fname );
 892                                 return self::AS_HOOK_ERROR;
 893                         }
 894
 895                         # Handle the user preference to force summaries here. Check if it's not a redirect.
 896                         if ( !$this->allowBlankSummary && !Title::newFromRedirect( $this->textbox1 ) ) {
 897                                 if ( md5( $this->summary ) == $this->autoSumm ) {
 898                                         $this->missingSummary = true;
 899                                         wfProfileOut( $fname );
 900                                         return self::AS_SUMMARY_NEEDED;
 901                                 }
 902                         }
 903
 904                         $isComment = ( $this->section == 'new' );
 905
 906                         $this->mArticle->insertNewArticle( $this->textbox1, $this->summary,
 907                                 $this->minoredit, $this->watchthis, false, $isComment, $bot );
 908
 909                         wfProfileOut( $fname );
 910                         return self::AS_SUCCESS_NEW_ARTICLE;
 911                 }
 912
 913                 # Article exists. Check for edit conflict.
 914
 915                 $this->mArticle->clear(); # Force reload of dates, etc.
 916                 $this->mArticle->forUpdate( true ); # Lock the article
 917
 918                 wfDebug("timestamp: {$this->mArticle->getTimestamp()}, edittime: {$this->edittime}\n");
 919
 920                 if ( $this->mArticle->getTimestamp() != $this->edittime ) {
 921                         $this->isConflict = true;
 922                         if ( $this->section == 'new' ) {
 923                                 if ( $this->mArticle->getUserText() == $wgUser->getName() &&
 924                                         $this->mArticle->getComment() == $this->summary ) {
 925                                         // Probably a duplicate submission of a new comment.
 926                                         // This can happen when squid resends a request after
 927                                         // a timeout but the first one actually went through.
 928                                         wfDebug( "EditPage::editForm duplicate new section submission; trigger edit conflict!\n" );
 929                                 } else {
 930                                         // New comment; suppress conflict.
 931                                         $this->isConflict = false;
 932                                         wfDebug( "EditPage::editForm conflict suppressed; new section\n" );
 933                                 }
 934                         }
 935                 }
 936                 $userid = $wgUser->getId();
 937
 938                 # Suppress edit conflict with self, except for section edits where merging is required.
 939                 if ( $this->isConflict && $this->section == '' && $this->userWasLastToEdit($userid,$this->edittime) ) {
 940                         wfDebug( "EditPage::editForm Suppressing edit conflict, same user.\n" );
 941                         $this->isConflict = false;
 942                 }
 943
 944                 if ( $this->isConflict ) {
 945                         wfDebug( "EditPage::editForm conflict! getting section '$this->section' for time '$this->edittime' (article time '" .
 946                                 $this->mArticle->getTimestamp() . "')\n" );
 947                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary, $this->edittime );
 948                 } else {
 949                         wfDebug( "EditPage::editForm getting section '$this->section'\n" );
 950                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary );
 951                 }
 952                 if ( is_null( $text ) ) {
 953                         wfDebug( "EditPage::editForm activating conflict; section replace failed.\n" );
 954                         $this->isConflict = true;
 955                         $text = $this->textbox1; // do not try to merge here!
 956                 } else if ( $this->isConflict ) {
 957                         # Attempt merge
 958                         if ( $this->mergeChangesInto( $text ) ) {
 959                                 // Successful merge! Maybe we should tell the user the good news?
 960                                 $this->isConflict = false;
 961                                 wfDebug( "EditPage::editForm Suppressing edit conflict, successful merge.\n" );
 962                         } else {
 963                                 $this->section = '';
 964                                 $this->textbox1 = $text;
 965                                 wfDebug( "EditPage::editForm Keeping edit conflict, failed merge.\n" );
 966                         }
 967                 }
 968
 969                 if ( $this->isConflict ) {
 970                         wfProfileOut( $fname );
 971                         return self::AS_CONFLICT_DETECTED;
 972                 }
 973
 974                 $oldtext = $this->mArticle->getContent();
 975
 976                 // Run post-section-merge edit filter
 977                 if ( !wfRunHooks( 'EditFilterMerged', array( $this, $text, &$this->hookError, $this->summary ) ) ) {
 978                         # Error messages etc. could be handled within the hook...
 979                         wfProfileOut( $fname );
 980                         return self::AS_HOOK_ERROR;
 981                 }
 982
 983                 # Handle the user preference to force summaries here, but not for null edits
 984                 if ( $this->section != 'new' && !$this->allowBlankSummary && 0 != strcmp($oldtext,$text)
 985                         && !Title::newFromRedirect( $text ) ) # check if it's not a redirect
 986                 {
 987                         if ( md5( $this->summary ) == $this->autoSumm ) {
 988                                 $this->missingSummary = true;
 989                                 wfProfileOut( $fname );
 990                                 return self::AS_SUMMARY_NEEDED;
 991                         }
 992                 }
 993
 994                 # And a similar thing for new sections
 995                 if ( $this->section == 'new' && !$this->allowBlankSummary ) {
 996                         if (trim($this->summary) == '') {
 997                                 $this->missingSummary = true;
 998                                 wfProfileOut( $fname );
 999                                 return self::AS_SUMMARY_NEEDED;
1000                         }
1001                 }
1002
1003                 # All's well
1004                 wfProfileIn( "$fname-sectionanchor" );
1005                 $sectionanchor = '';
1006                 if ( $this->section == 'new' ) {
1007                         if ( $this->textbox1 == '' ) {
1008                                 $this->missingComment = true;
1009                                 return self::AS_TEXTBOX_EMPTY;
1010                         }
1011                         if ( $this->summary != '' ) {
1012                                 $sectionanchor = $wgParser->guessSectionNameFromWikiText( $this->summary );
1013                                 # This is a new section, so create a link to the new section
1014                                 # in the revision summary.
1015                                 $cleanSummary = $wgParser->stripSectionName( $this->summary );
1016                                 $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
1017                         }
1018                 } elseif ( $this->section != '' ) {
1019                         # Try to get a section anchor from the section source, redirect to edited section if header found
1020                         # XXX: might be better to integrate this into Article::replaceSection
1021                         # for duplicate heading checking and maybe parsing
1022                         $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
1023                         # we can't deal with anchors, includes, html etc in the header for now,
1024                         # headline would need to be parsed to improve this
1025                         if ( $hasmatch and strlen($matches[2]) > 0 ) {
1026                                 $sectionanchor = $wgParser->guessSectionNameFromWikiText( $matches[2] );
1027                         }
1028                 }
1029                 wfProfileOut( "$fname-sectionanchor" );
1030
1031                 // Save errors may fall down to the edit form, but we've now
1032                 // merged the section into full text. Clear the section field
1033                 // so that later submission of conflict forms won't try to
1034                 // replace that into a duplicated mess.
1035                 $this->textbox1 = $text;
1036                 $this->section = '';
1037
1038                 // Check for length errors again now that the section is merged in
1039                 $this->kblength = (int)(strlen( $text ) / 1024);
1040                 if ( $this->kblength > $wgMaxArticleSize ) {
1041                         $this->tooBig = true;
1042                         wfProfileOut( $fname );
1043                         return self::AS_MAX_ARTICLE_SIZE_EXCEEDED;
1044                 }
1045
1046                 # update the article here
1047                 if ( $this->mArticle->updateArticle( $text, $this->summary, $this->minoredit,
1048                         $this->watchthis, $bot, $sectionanchor ) )
1049                 {
1050                         wfProfileOut( $fname );
1051                         return self::AS_SUCCESS_UPDATE;
1052                 } else {
1053                         $this->isConflict = true;
1054                 }
1055                 wfProfileOut( $fname );
1056                 return self::AS_END;
1057         }
1058
1059         /**
1060          * Check if no edits were made by other users since
1061          * the time a user started editing the page. Limit to
1062          * 50 revisions for the sake of performance.
1063          */
1064         protected function userWasLastToEdit( $id, $edittime ) {
1065                 if( !$id ) return false;
1066                 $dbw = wfGetDB( DB_MASTER );
1067                 $res = $dbw->select( 'revision',
1068                         'rev_user',
1069                         array(
1070                                 'rev_page' => $this->mArticle->getId(),
1071                                 'rev_timestamp > '.$dbw->addQuotes( $dbw->timestamp($edittime) )
1072                         ),
1073                         __METHOD__,
1074                         array( 'ORDER BY' => 'rev_timestamp ASC', 'LIMIT' => 50 ) );
1075                 while( $row = $res->fetchObject() ) {
1076                         if( $row->rev_user != $id ) {
1077                                 return false;
1078                         }
1079                 }
1080                 return true;
1081         }
1082
1083         /**
1084          * Check given input text against $wgSpamRegex, and return the text of the first match.
1085          * @return mixed -- matching string or false
1086          */
1087         public static function matchSpamRegex( $text ) {
1088                 global $wgSpamRegex;
1089                 // For back compatibility, $wgSpamRegex may be a single string or an array of regexes.
1090                 $regexes = (array)$wgSpamRegex;
1091                 return self::matchSpamRegexInternal( $text, $regexes );
1092         }
1093
1094         /**
1095          * Check given input text against $wgSpamRegex, and return the text of the first match.
1096          * @return mixed -- matching string or false
1097          */
1098         public static function matchSummarySpamRegex( $text ) {
1099                 global $wgSummarySpamRegex;
1100                 $regexes = (array)$wgSummarySpamRegex;
1101                 return self::matchSpamRegexInternal( $text, $regexes );
1102         }
1103
1104         protected static function matchSpamRegexInternal( $text, $regexes ) {
1105                 foreach( $regexes as $regex ) {
1106                         $matches = array();
1107                         if( preg_match( $regex, $text, $matches ) ) {
1108                                 return $matches[0];
1109                         }
1110                 }
1111                 return false;
1112         }
1113
1114         /**
1115          * Initialise form fields in the object
1116          * Called on the first invocation, e.g. when a user clicks an edit link
1117          */
1118         function initialiseForm() {
1119                 $this->edittime = $this->mArticle->getTimestamp();
1120                 $this->textbox1 = $this->getContent( false );
1121                 if ( $this->textbox1 === false ) return false;
1122                 wfProxyCheck();
1123                 return true;
1124         }
1125
1126         function setHeaders() {
1127                 global $wgOut, $wgTitle;
1128                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1129                 if ( $this->formtype == 'preview' ) {
1130                         $wgOut->setPageTitleActionText( wfMsg( 'preview' ) );
1131                 }
1132                 if ( $this->isConflict ) {
1133                         $wgOut->setPageTitle( wfMsg( 'editconflict', $wgTitle->getPrefixedText() ) );
1134                 } elseif ( $this->section != '' ) {
1135                         $msg = $this->section == 'new' ? 'editingcomment' : 'editingsection';
1136                         $wgOut->setPageTitle( wfMsg( $msg, $wgTitle->getPrefixedText() ) );
1137                 } else {
1138                         # Use the title defined by DISPLAYTITLE magic word when present
1139                         if ( isset($this->mParserOutput)
1140                          && ( $dt = $this->mParserOutput->getDisplayTitle() ) !== false ) {
1141                                 $title = $dt;
1142                         } else {
1143                                 $title = $wgTitle->getPrefixedText();
1144                         }
1145                         $wgOut->setPageTitle( wfMsg( 'editing', $title ) );
1146                 }
1147         }
1148
1149         /**
1150          * Send the edit form and related headers to $wgOut
1151          * @param $formCallback Optional callable that takes an OutputPage
1152          *                      parameter; will be called during form output
1153          *                      near the top, for captchas and the like.
1154          */
1155         function showEditForm( $formCallback=null ) {
1156                 global $wgOut, $wgUser, $wgLang, $wgContLang, $wgMaxArticleSize, $wgTitle, $wgRequest;
1157
1158                 # If $wgTitle is null, that means we're in API mode.
1159                 # Some hook probably called this function  without checking
1160                 # for is_null($wgTitle) first. Bail out right here so we don't
1161                 # do lots of work just to discard it right after.
1162                 if (is_null($wgTitle))
1163                         return;
1164
1165                 $fname = 'EditPage::showEditForm';
1166                 wfProfileIn( $fname );
1167
1168                 $sk = $wgUser->getSkin();
1169
1170                 #need to parse the preview early so that we know which templates are used,
1171                 #otherwise users with "show preview after edit box" will get a blank list
1172                 #we parse this near the beginning so that setHeaders can do the title
1173                 #setting work instead of leaving it in getPreviewText
1174                 $previewOutput = '';
1175                 if ( $this->formtype == 'preview' ) {
1176                         $previewOutput = $this->getPreviewText();
1177                 }
1178
1179                 wfRunHooks( 'EditPage::showEditForm:initial', array( &$this ) ) ;
1180
1181                 $this->setHeaders();
1182
1183                 # Enabled article-related sidebar, toplinks, etc.
1184                 $wgOut->setArticleRelated( true );
1185
1186                 if ( $this->isConflict ) {
1187                         $wgOut->wrapWikiMsg( "<div class='mw-explainconflict'>\n$1</div>", 'explainconflict' );
1188
1189                         $this->textbox2 = $this->textbox1;
1190                         $this->textbox1 = $this->getContent();
1191                         $this->edittime = $this->mArticle->getTimestamp();
1192                 } else {
1193                         if ( $this->section != '' && $this->section != 'new' ) {
1194                                 $matches = array();
1195                                 if ( !$this->summary && !$this->preview && !$this->diff ) {
1196                                         preg_match( "/^(=+)(.+)\\1/mi", $this->textbox1, $matches );
1197                                         if ( !empty( $matches[2] ) ) {
1198                                                 global $wgParser;
1199                                                 $this->summary = "/* " .
1200                                                         $wgParser->stripSectionName(trim($matches[2])) .
1201                                                         " */ ";
1202                                         }
1203                                 }
1204                         }
1205
1206                         if ( $this->missingComment ) {
1207                                 $wgOut->wrapWikiMsg( '<div id="mw-missingcommenttext">$1</div>', 'missingcommenttext' );
1208                         }
1209
1210                         if ( $this->missingSummary && $this->section != 'new' ) {
1211                                 $wgOut->wrapWikiMsg( '<div id="mw-missingsummary">$1</div>', 'missingsummary' );
1212                         }
1213
1214                         if ( $this->missingSummary && $this->section == 'new' ) {
1215                                 $wgOut->wrapWikiMsg( '<div id="mw-missingcommentheader">$1</div>', 'missingcommentheader' );
1216                         }
1217
1218                         if ( $this->hookError !== '' ) {
1219                                 $wgOut->addWikiText( $this->hookError );
1220                         }
1221
1222                         if ( !$this->checkUnicodeCompliantBrowser() ) {
1223                                 $wgOut->addWikiMsg( 'nonunicodebrowser' );
1224                         }
1225                         if ( isset( $this->mArticle ) && isset( $this->mArticle->mRevision ) ) {
1226                         // Let sysop know that this will make private content public if saved
1227
1228                                 if ( !$this->mArticle->mRevision->userCan( Revision::DELETED_TEXT ) ) {
1229                                         $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1</div>\n", 'rev-deleted-text-permission' );
1230                                 } else if ( $this->mArticle->mRevision->isDeleted( Revision::DELETED_TEXT ) ) {
1231                                         $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1</div>\n", 'rev-deleted-text-view' );
1232                                 }
1233
1234                                 if ( !$this->mArticle->mRevision->isCurrent() ) {
1235                                         $this->mArticle->setOldSubtitle( $this->mArticle->mRevision->getId() );
1236                                         $wgOut->addWikiMsg( 'editingold' );
1237                                 }
1238                         }
1239                 }
1240
1241                 if ( wfReadOnly() ) {
1242                         $wgOut->wrapWikiMsg( "<div id=\"mw-read-only-warning\">\n$1\n</div>", array( 'readonlywarning', wfReadOnlyReason() ) );
1243                 } elseif ( $wgUser->isAnon() && $this->formtype != 'preview' ) {
1244                         $wgOut->wrapWikiMsg( '<div id="mw-anon-edit-warning">$1</div>', 'anoneditwarning' );
1245                 } else {
1246                         if ( $this->isCssJsSubpage ) {
1247                                 # Check the skin exists
1248                                 if ( !$this->isValidCssJsSubpage ) {
1249                                         $wgOut->addWikiMsg( 'userinvalidcssjstitle', $wgTitle->getSkinFromCssJsSubpage() );
1250                                 }
1251                                 if ( $this->formtype !== 'preview' ) {
1252                                         if ( $this->isCssSubpage )
1253                                                 $wgOut->addWikiMsg( 'usercssyoucanpreview' );
1254                                         if ( $this->isJsSubpage )
1255                                                 $wgOut->addWikiMsg( 'userjsyoucanpreview' );
1256                                 }
1257                         }
1258                 }
1259
1260                 $classes = array(); // Textarea CSS
1261                 if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
1262                 } elseif ( $this->mTitle->isProtected( 'edit' ) ) {
1263                         # Is the title semi-protected?
1264                         if ( $this->mTitle->isSemiProtected() ) {
1265                                 $noticeMsg = 'semiprotectedpagewarning';
1266                                 $classes[] = 'mw-textarea-sprotected';
1267                         } else {
1268                                 # Then it must be protected based on static groups (regular)
1269                                 $noticeMsg = 'protectedpagewarning';
1270                                 $classes[] = 'mw-textarea-protected';
1271                         }
1272                         $wgOut->addHTML( "<div class='mw-warning-with-logexcerpt'>\n" );
1273                         $wgOut->addWikiMsg( $noticeMsg );
1274                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle->getPrefixedText(), '', 1 );
1275                         $wgOut->addHTML( "</div>\n" );
1276                 }
1277                 if ( $this->mTitle->isCascadeProtected() ) {
1278                         # Is this page under cascading protection from some source pages?
1279                         list($cascadeSources, /* $restrictions */) = $this->mTitle->getCascadeProtectionSources();
1280                         $notice = "<div class='mw-cascadeprotectedwarning'>$1\n";
1281                         $cascadeSourcesCount = count( $cascadeSources );
1282                         if ( $cascadeSourcesCount > 0 ) {
1283                                 # Explain, and list the titles responsible
1284                                 foreach( $cascadeSources as $page ) {
1285                                         $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
1286                                 }
1287                         }
1288                         $notice .= '</div>';
1289                         $wgOut->wrapWikiMsg( $notice, array( 'cascadeprotectedwarning', $cascadeSourcesCount ) );
1290                 }
1291                 if ( !$this->mTitle->exists() && $this->mTitle->getRestrictions( 'create' ) ) {
1292                         $wgOut->wrapWikiMsg( '<div class="mw-titleprotectedwarning">$1</div>', 'titleprotectedwarning' );
1293                 }
1294
1295                 if ( $this->kblength === false ) {
1296                         $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
1297                 }
1298                 if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
1299                         $wgOut->addHTML( "<div class='error' id='mw-edit-longpageerror'>\n" );
1300                         $wgOut->addWikiMsg( 'longpageerror', $wgLang->formatNum( $this->kblength ), $wgLang->formatNum( $wgMaxArticleSize ) );
1301                         $wgOut->addHTML( "</div>\n" );
1302                 } elseif ( $this->kblength > 29 ) {
1303                         $wgOut->addHTML( "<div id='mw-edit-longpagewarning'>\n" );
1304                         $wgOut->addWikiMsg( 'longpagewarning', $wgLang->formatNum( $this->kblength ) );
1305                         $wgOut->addHTML( "</div>\n" );
1306                 }
1307
1308                 $action = $wgTitle->escapeLocalURL( array( 'action' => $this->action ) );
1309
1310                 $summary = wfMsgExt( 'summary', 'parseinline' );
1311                 $subject = wfMsgExt( 'subject', 'parseinline' );
1312
1313                 $cancel = $sk->link(
1314                         $wgTitle,
1315                         wfMsgExt( 'cancel', array( 'parseinline' ) ),
1316                         array( 'id' => 'mw-editform-cancel' ),
1317                         array(),
1318                         array( 'known', 'noclasses' )
1319                 );
1320                 $separator = wfMsgExt( 'pipe-separator' , 'escapenoentities' );
1321                 $edithelpurl = Skin::makeInternalOrExternalUrl( wfMsgForContent( 'edithelppage' ));
1322                 $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
1323                         htmlspecialchars( wfMsg( 'edithelp' ) ).'</a> '.
1324                         htmlspecialchars( wfMsg( 'newwindow' ) );
1325
1326                 global $wgRightsText;
1327                 if ( $wgRightsText ) {
1328                         $copywarnMsg = array( 'copyrightwarning',
1329                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
1330                                 $wgRightsText );
1331                 } else {
1332                         $copywarnMsg = array( 'copyrightwarning2',
1333                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]' );
1334                 }
1335                 // Allow for site and per-namespace customization of contribution/copyright notice.
1336                 wfRunHooks( 'EditPageCopyrightWarning', array( $this->mTitle, &$copywarnMsg ) );
1337
1338                 if ( $wgUser->getOption('showtoolbar') and !$this->isCssJsSubpage ) {
1339                         # prepare toolbar for edit buttons
1340                         $toolbar = EditPage::getEditToolbar();
1341                 } else {
1342                         $toolbar = '';
1343                 }
1344
1345
1346                 // activate checkboxes if user wants them to be always active
1347                 if ( !$this->preview && !$this->diff ) {
1348                         # Sort out the "watch" checkbox
1349                         if ( $wgUser->getOption( 'watchdefault' ) ) {
1350                                 # Watch all edits
1351                                 $this->watchthis = true;
1352                         } elseif ( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
1353                                 # Watch creations
1354                                 $this->watchthis = true;
1355                         } elseif ( $this->mTitle->userIsWatching() ) {
1356                                 # Already watched
1357                                 $this->watchthis = true;
1358                         }
1359
1360                         # May be overriden by request parameters
1361                         if( $wgRequest->getBool( 'watchthis' ) ) {
1362                                 $this->watchthis = true;
1363                         }
1364
1365                         if ( $wgUser->getOption( 'minordefault' ) ) $this->minoredit = true;
1366                 }
1367
1368                 $wgOut->addHTML( $this->editFormPageTop );
1369
1370                 if ( $wgUser->getOption( 'previewontop' ) ) {
1371                         $this->displayPreviewArea( $previewOutput, true );
1372                 }
1373
1374
1375                 $wgOut->addHTML( $this->editFormTextTop );
1376
1377                 # if this is a comment, show a subject line at the top, which is also the edit summary.
1378                 # Otherwise, show a summary field at the bottom
1379                 $summarytext = $wgContLang->recodeForEdit( $this->summary );
1380
1381                 # If a blank edit summary was previously provided, and the appropriate
1382                 # user preference is active, pass a hidden tag as wpIgnoreBlankSummary. This will stop the
1383                 # user being bounced back more than once in the event that a summary
1384                 # is not required.
1385                 #####
1386                 # For a bit more sophisticated detection of blank summaries, hash the
1387                 # automatic one and pass that in the hidden field wpAutoSummary.
1388                 $summaryhiddens =  '';
1389                 if ( $this->missingSummary ) $summaryhiddens .= Xml::hidden( 'wpIgnoreBlankSummary', true );
1390                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
1391                 $summaryhiddens .= Xml::hidden( 'wpAutoSummary', $autosumm );
1392                 if ( $this->section == 'new' ) {
1393                         $commentsubject = '';
1394                         if ( !$wgRequest->getBool( 'nosummary' ) ) {
1395                                 # Add a class if 'missingsummary' is triggered to allow styling of the summary line
1396                                 $summaryClass = $this->missingSummary ? 'mw-summarymissed' : 'mw-summary';
1397
1398                                 $commentsubject =
1399                                         Xml::tags( 'label', array( 'for' => 'wpSummary' ), $subject );
1400                                 $commentsubject =
1401                                         Xml::tags( 'span', array( 'class' => $summaryClass, 'id' => "wpSummaryLabel" ),
1402                                                 $commentsubject );
1403                                 $commentsubject .= '&nbsp;';
1404                                 $commentsubject .= Xml::input( 'wpSummary',
1405                                                                         60,
1406                                                                         $summarytext,
1407                                                                         array(
1408                                                                                 'id' => 'wpSummary',
1409                                                                                 'maxlength' => '200',
1410                                                                                 'tabindex' => '1'
1411                                                                         ) );
1412                         } else {
1413                                 $summaryhiddens .= Xml::hidden( 'wpIgnoreBlankSummary', true ); # bug 18699
1414                         }
1415                         $editsummary = "<div class='editOptions'>\n";
1416                         global $wgParser;
1417                         $formattedSummary = wfMsgForContent( 'newsectionsummary', $wgParser->stripSectionName( $this->summary ) );
1418                         $subjectpreview = $summarytext && ( $this->preview || $this->diff ) ?
1419                                 "<div class=\"mw-summary-preview\">". wfMsgExt('subject-preview', 'parseinline') . $sk->commentBlock( $formattedSummary, $this->mTitle, true )."</div>\n" : '';
1420                         $summarypreview = '';
1421                 } else {
1422                         $commentsubject = '';
1423
1424                         # Add a class if 'missingsummary' is triggered to allow styling of the summary line
1425                         $summaryClass = $this->missingSummary ? 'mw-summarymissed' : 'mw-summary';
1426
1427                         $editsummary = Xml::tags( 'label', array( 'for' => 'wpSummary' ), $summary );
1428                         $editsummary = Xml::tags( 'span',  array( 'class' => $summaryClass, 'id' => "wpSummaryLabel" ),
1429                                         $editsummary ) . ' ';
1430
1431                         $editsummary .= Xml::input( 'wpSummary',
1432                                 60,
1433                                 $summarytext,
1434                                 array(
1435                                         'id' => 'wpSummary',
1436                                         'maxlength' => '200',
1437                                         'tabindex' => '1'
1438                                 ) );
1439
1440                         // No idea where this is closed.
1441                         $editsummary = Xml::openElement( 'div', array( 'class' => 'editOptions' ) )
1442                                                         . $editsummary . '<br/>';
1443
1444                         $summarypreview = '';
1445                         if ( $summarytext && ( $this->preview || $this->diff ) ) {
1446                                 $summarypreview =
1447                                         Xml::tags( 'div',
1448                                                 array( 'class' => 'mw-summary-preview' ),
1449                                                 wfMsgExt( 'summary-preview', 'parseinline' ) .
1450                                                         $sk->commentBlock( $this->summary, $this->mTitle )
1451                                         );
1452                         }
1453                         $subjectpreview = '';
1454                 }
1455                 $commentsubject .= $summaryhiddens;
1456
1457                 # Set focus to the edit box on load, except on preview or diff, where it would interfere with the display
1458                 if ( !$this->preview && !$this->diff ) {
1459                         $wgOut->setOnloadHandler( 'document.editform.wpTextbox1.focus()' );
1460                 }
1461                 $templates = $this->getTemplates();
1462                 $formattedtemplates = $sk->formatTemplates( $templates, $this->preview, $this->section != '');
1463
1464                 $hiddencats = $this->mArticle->getHiddenCategories();
1465                 $formattedhiddencats = $sk->formatHiddenCategories( $hiddencats );
1466
1467                 global $wgUseMetadataEdit ;
1468                 if ( $wgUseMetadataEdit ) {
1469                         $metadata = $this->mMetaData ;
1470                         $metadata = htmlspecialchars( $wgContLang->recodeForEdit( $metadata ) ) ;
1471                         $top = wfMsgWikiHtml( 'metadata_help' );
1472                         /* ToDo: Replace with clean code */
1473                         $ew = $wgUser->getOption( 'editwidth' );
1474                         if ( $ew ) $ew = " style=\"width:100%\"";
1475                         else $ew = '';
1476                         $cols = $wgUser->getIntOption( 'cols' );
1477                         /* /ToDo */
1478                         $metadata = $top . "<textarea name='metadata' rows='3' cols='{$cols}'{$ew}>{$metadata}</textarea>" ;
1479                 }
1480                 else $metadata = "" ;
1481
1482                 $recreate = '';
1483                 if ( $this->wasDeletedSinceLastEdit() ) {
1484                         if ( 'save' != $this->formtype ) {
1485                                 $wgOut->wrapWikiMsg(
1486                                         "<div class='error mw-deleted-while-editing'>\n$1</div>",
1487                                         'deletedwhileediting' );
1488                         } else {
1489                                 // Hide the toolbar and edit area, user can click preview to get it back
1490                                 // Add an confirmation checkbox and explanation.
1491                                 $toolbar = '';
1492                                 $recreate = '<div class="mw-confirm-recreate">' .
1493                                                 $wgOut->parse( wfMsg( 'confirmrecreate',  $this->lastDelete->user_name , $this->lastDelete->log_comment ) ) .
1494                                                 Xml::checkLabel( wfMsg( 'recreate' ), 'wpRecreate', 'wpRecreate', false,
1495                                                         array( 'title' => $sk->titleAttrib( 'recreate' ), 'tabindex' => 1, 'id' => 'wpRecreate' )
1496                                                 ) . '</div>';
1497                         }
1498                 }
1499
1500                 $tabindex = 2;
1501
1502                 $checkboxes = $this->getCheckboxes( $tabindex, $sk,
1503                         array( 'minor' => $this->minoredit, 'watch' => $this->watchthis ) );
1504
1505                 $checkboxhtml = implode( $checkboxes, "\n" );
1506
1507                 $buttons = $this->getEditButtons( $tabindex );
1508                 $buttonshtml = implode( $buttons, "\n" );
1509
1510                 $safemodehtml = $this->checkUnicodeCompliantBrowser()
1511                         ? '' : Xml::hidden( 'safemode', '1' );
1512
1513                 $wgOut->addHTML( <<<END
1514 {$toolbar}
1515 <form id="editform" name="editform" method="post" action="$action" enctype="multipart/form-data">
1516 END
1517 );
1518
1519                 if ( is_callable( $formCallback ) ) {
1520                         call_user_func_array( $formCallback, array( &$wgOut ) );
1521                 }
1522
1523                 wfRunHooks( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );
1524
1525                 // Put these up at the top to ensure they aren't lost on early form submission
1526                 $this->showFormBeforeText();
1527
1528                 $wgOut->addHTML( <<<END
1529 {$recreate}
1530 {$commentsubject}
1531 {$subjectpreview}
1532 {$this->editFormTextBeforeContent}
1533 END
1534 );
1535                 $this->showTextbox1( $classes );
1536
1537                 $wgOut->wrapWikiMsg( "<div id=\"editpage-copywarn\">\n$1\n</div>", $copywarnMsg );
1538                 $wgOut->addHTML( <<<END
1539 {$this->editFormTextAfterWarn}
1540 {$metadata}
1541 {$editsummary}
1542 {$summarypreview}
1543 {$checkboxhtml}
1544 {$safemodehtml}
1545 END
1546 );
1547
1548                 $wgOut->addHTML(
1549 "<div class='editButtons'>
1550 {$buttonshtml}
1551         <span class='editHelp'>{$cancel}{$separator}{$edithelp}</span>
1552 </div><!-- editButtons -->
1553 </div><!-- editOptions -->");
1554
1555                 /**
1556                  * To make it harder for someone to slip a user a page
1557                  * which submits an edit form to the wiki without their
1558                  * knowledge, a random token is associated with the login
1559                  * session. If it's not passed back with the submission,
1560                  * we won't save the page, or render user JavaScript and
1561                  * CSS previews.
1562                  *
1563                  * For anon editors, who may not have a session, we just
1564                  * include the constant suffix to prevent editing from
1565                  * broken text-mangling proxies.
1566                  */
1567                 $token = htmlspecialchars( $wgUser->editToken() );
1568                 $wgOut->addHTML( "\n<input type='hidden' value=\"$token\" name=\"wpEditToken\" />\n" );
1569
1570                 $this->showTosSummary();
1571                 $this->showEditTools();
1572
1573                 $wgOut->addHTML( <<<END
1574 {$this->editFormTextAfterTools}
1575 <div class='templatesUsed'>
1576 {$formattedtemplates}
1577 </div>
1578 <div class='hiddencats'>
1579 {$formattedhiddencats}
1580 </div>
1581 END
1582 );
1583
1584                 if ( $this->isConflict && wfRunHooks( 'EditPageBeforeConflictDiff', array( &$this, &$wgOut ) ) ) {
1585                         $wgOut->wrapWikiMsg( '==$1==', "yourdiff" );
1586
1587                         $de = new DifferenceEngine( $this->mTitle );
1588                         $de->setText( $this->textbox2, $this->textbox1 );
1589                         $de->showDiff( wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
1590
1591                         $wgOut->wrapWikiMsg( '==$1==', "yourtext" );
1592                         $this->showTextbox2();
1593                 }
1594                 $wgOut->addHTML( $this->editFormTextBottom );
1595                 $wgOut->addHTML( "</form>\n" );
1596                 if ( !$wgUser->getOption( 'previewontop' ) ) {
1597                         $this->displayPreviewArea( $previewOutput, false );
1598                 }
1599
1600                 wfProfileOut( $fname );
1601         }
1602
1603         protected function showFormBeforeText() {
1604                 global $wgOut;
1605                 $wgOut->addHTML( "
1606 <input type='hidden' value=\"" . htmlspecialchars( $this->section ) . "\" name=\"wpSection\" />
1607 <input type='hidden' value=\"{$this->starttime}\" name=\"wpStarttime\" />\n
1608 <input type='hidden' value=\"{$this->edittime}\" name=\"wpEdittime\" />\n
1609 <input type='hidden' value=\"{$this->scrolltop}\" name=\"wpScrolltop\" id=\"wpScrolltop\" />\n" );
1610         }
1611
1612         protected function showTextbox1( $classes ) {
1613                 $attribs = array( 'tabindex' => 1 );
1614
1615                 if ( $this->wasDeletedSinceLastEdit() )
1616                         $attribs['type'] = 'hidden';
1617                 if ( !empty($classes) )
1618                         $attribs['class'] = implode(' ',$classes);
1619
1620                 $this->showTextbox( $this->textbox1, 'wpTextbox1', $attribs );
1621         }
1622
1623         protected function showTextbox2() {
1624                 $this->showTextbox( $this->textbox2, 'wpTextbox2', array( 'tabindex' => 6 ) );
1625         }
1626
1627         protected function showTextbox( $content, $name, $attribs = array() ) {
1628                 global $wgOut, $wgUser;
1629
1630                 $wikitext = $this->safeUnicodeOutput( $content );
1631                 if ( $wikitext !== '' ) {
1632                         // Ensure there's a newline at the end, otherwise adding lines
1633                         // is awkward.
1634                         // But don't add a newline if the ext is empty, or Firefox in XHTML
1635                         // mode will show an extra newline. A bit annoying.
1636                         $wikitext .= "\n";
1637                 }
1638
1639                 $attribs['accesskey'] = ',';
1640                 $attribs['id'] = $name;
1641
1642                 if ( $wgUser->getOption( 'editwidth' ) )
1643                         $attribs['style'] = 'width: 100%';
1644
1645                 $wgOut->addHTML( Xml::textarea(
1646                         $name,
1647                         $wikitext,
1648                         $wgUser->getIntOption( 'cols' ), $wgUser->getIntOption( 'rows' ),
1649                         $attribs ) );
1650         }
1651
1652         protected function displayPreviewArea( $previewOutput, $isOnTop = false ) {
1653                 global $wgOut;
1654                 $classes = array();
1655                 if ( $isOnTop )
1656                         $classes[] = 'ontop';
1657
1658                 $attribs = array( 'id' => 'wikiPreview', 'class' => implode( ' ', $classes ) );
1659
1660                 if ( $this->formtype != 'preview' )
1661                         $attribs['style'] = 'display: none;';
1662
1663                 $wgOut->addHTML( Xml::openElement( 'div', $attribs ) );
1664
1665                 if ( $this->formtype == 'preview' ) {
1666                         $this->showPreview( $previewOutput );
1667                 }
1668
1669                 $wgOut->addHTML( '</div>' );
1670
1671                 if ( $this->formtype == 'diff') {
1672                         $this->showDiff();
1673                 }
1674         }
1675
1676         /**
1677          * Append preview output to $wgOut.
1678          * Includes category rendering if this is a category page.
1679          *
1680          * @param string $text The HTML to be output for the preview.
1681          */
1682         protected function showPreview( $text ) {
1683                 global $wgOut;
1684                 if ( $this->mTitle->getNamespace() == NS_CATEGORY) {
1685                         $this->mArticle->openShowCategory();
1686                 }
1687                 # This hook seems slightly odd here, but makes things more
1688                 # consistent for extensions.
1689                 wfRunHooks( 'OutputPageBeforeHTML',array( &$wgOut, &$text ) );
1690                 $wgOut->addHTML( $text );
1691                 if ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
1692                         $this->mArticle->closeShowCategory();
1693                 }
1694         }
1695
1696         /**
1697          * Live Preview lets us fetch rendered preview page content and
1698          * add it to the page without refreshing the whole page.
1699          * If not supported by the browser it will fall through to the normal form
1700          * submission method.
1701          *
1702          * This function outputs a script tag to support live preview, and
1703          * returns an onclick handler which should be added to the attributes
1704          * of the preview button
1705          */
1706         function doLivePreviewScript() {
1707                 global $wgOut, $wgTitle;
1708                 $wgOut->addScriptFile( 'preview.js' );
1709                 return "";
1710         }
1711
1712         protected function showTosSummary() {
1713                 $msg = 'editpage-tos-summary';
1714                 // Give a chance for site and per-namespace customizations of
1715                 // terms of service summary link that might exist separately
1716                 // from the copyright notice.
1717                 //
1718                 // This will display between the save button and the edit tools,
1719                 // so should remain short!
1720                 wfRunHooks( 'EditPageTosSummary', array( $this->mTitle, &$msg ) );
1721                 $text = wfMsg( $msg );
1722                 if( !wfEmptyMsg( $msg, $text ) && $text !== '-' ) {
1723                         global $wgOut;
1724                         $wgOut->addHTML( '<div class="mw-tos-summary">' );
1725                         $wgOut->addWikiMsgArray( $msg, array() );
1726                         $wgOut->addHTML( '</div>' );
1727                 }
1728         }
1729
1730         protected function showEditTools() {
1731                 global $wgOut;
1732                 $wgOut->addHTML( '<div class="mw-editTools">' );
1733                 $wgOut->addWikiMsgArray( 'edittools', array(), array( 'content' ) );
1734                 $wgOut->addHTML( '</div>' );
1735         }
1736
1737         protected function getLastDelete() {
1738                 $dbr = wfGetDB( DB_SLAVE );
1739                 $data = $dbr->selectRow(
1740                         array( 'logging', 'user' ),
1741                         array( 'log_type',
1742                                'log_action',
1743                                'log_timestamp',
1744                                'log_user',
1745                                'log_namespace',
1746                                'log_title',
1747                                'log_comment',
1748                                'log_params',
1749                                    'log_deleted',
1750                                'user_name' ),
1751                         array( 'log_namespace' => $this->mTitle->getNamespace(),
1752                                'log_title' => $this->mTitle->getDBkey(),
1753                                'log_type' => 'delete',
1754                                'log_action' => 'delete',
1755                                'user_id=log_user' ),
1756                         __METHOD__,
1757                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' )
1758                 );
1759                 // Quick paranoid permission checks...
1760                 if( is_object($data) ) {
1761                         if( $data->log_deleted & LogPage::DELETED_USER )
1762                                 $data->user_name = wfMsgHtml('rev-deleted-user');
1763                         if( $data->log_deleted & LogPage::DELETED_COMMENT )
1764                                 $data->log_comment = wfMsgHtml('rev-deleted-comment');
1765                 }
1766                 return $data;
1767         }
1768
1769         /**
1770          * Get the rendered text for previewing.
1771          * @return string
1772          */
1773         function getPreviewText() {
1774                 global $wgOut, $wgUser, $wgTitle, $wgParser, $wgLang, $wgContLang, $wgMessageCache;
1775
1776                 wfProfileIn( __METHOD__ );
1777
1778                 if ( $this->mTriedSave && !$this->mTokenOk ) {
1779                         if ( $this->mTokenOkExceptSuffix ) {
1780                                 $note = wfMsg( 'token_suffix_mismatch' );
1781                         } else {
1782                                 $note = wfMsg( 'session_fail_preview' );
1783                         }
1784                 } else {
1785                         $note = wfMsg( 'previewnote' );
1786                 }
1787
1788                 $parserOptions = ParserOptions::newFromUser( $wgUser );
1789                 $parserOptions->setEditSection( false );
1790                 $parserOptions->setIsPreview( true );
1791                 $parserOptions->setIsSectionPreview( !is_null($this->section) && $this->section !== '' );
1792
1793                 global $wgRawHtml;
1794                 if ( $wgRawHtml && !$this->mTokenOk ) {
1795                         // Could be an offsite preview attempt. This is very unsafe if
1796                         // HTML is enabled, as it could be an attack.
1797                         return $wgOut->parse( "<div class='previewnote'>" .
1798                                 wfMsg( 'session_fail_preview_html' ) . "</div>" );
1799                 }
1800
1801                 # don't parse user css/js, show message about preview
1802                 # XXX: stupid php bug won't let us use $wgTitle->isCssJsSubpage() here
1803
1804                 if ( $this->isCssJsSubpage ) {
1805                         if (preg_match("/\\.css$/", $this->mTitle->getText() ) ) {
1806                                 $previewtext = wfMsg('usercsspreview');
1807                         } else if (preg_match("/\\.js$/", $this->mTitle->getText() ) ) {
1808                                 $previewtext = wfMsg('userjspreview');
1809                         }
1810                         $parserOptions->setTidy(true);
1811                         $parserOutput = $wgParser->parse( $previewtext, $this->mTitle, $parserOptions );
1812                         $previewHTML = $parserOutput->mText;
1813                 } elseif ( $rt = Title::newFromRedirectArray( $this->textbox1 ) ) {
1814                         $previewHTML = $this->mArticle->viewRedirect( $rt, false );
1815                 } else {
1816                         $toparse = $this->textbox1;
1817
1818                         # If we're adding a comment, we need to show the
1819                         # summary as the headline
1820                         if ( $this->section=="new" && $this->summary!="" ) {
1821                                 $toparse="== {$this->summary} ==\n\n".$toparse;
1822                         }
1823
1824                         if ( $this->mMetaData != "" ) $toparse .= "\n" . $this->mMetaData;
1825
1826                         // Parse mediawiki messages with correct target language
1827                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
1828                                 list( /* $unused */, $lang ) = $wgMessageCache->figureMessage( $this->mTitle->getText() );
1829                                 $obj = wfGetLangObj( $lang );
1830                                 $parserOptions->setTargetLanguage( $obj );
1831                         }
1832
1833
1834                         $parserOptions->setTidy(true);
1835                         $parserOptions->enableLimitReport();
1836                         $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $toparse ),
1837                                         $this->mTitle, $parserOptions );
1838
1839                         $previewHTML = $parserOutput->getText();
1840                         $this->mParserOutput = $parserOutput;
1841                         $wgOut->addParserOutputNoText( $parserOutput );
1842
1843                         if ( count( $parserOutput->getWarnings() ) ) {
1844                                 $note .= "\n\n" . implode( "\n\n", $parserOutput->getWarnings() );
1845                         }
1846                 }
1847
1848                 if( $this->isConflict ) {
1849                         $conflict = '<h2 id="mw-previewconflict">' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
1850                 } else {
1851                         $conflict = '<hr />';
1852                 }
1853
1854                 $previewhead = "<div class='previewnote'>\n" .
1855                         '<h2 id="mw-previewheader">' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>" .
1856                         $wgOut->parse( $note ) . $conflict . "</div>\n";
1857
1858                 wfProfileOut( __METHOD__ );
1859                 return $previewhead . $previewHTML;
1860         }
1861
1862         function getTemplates() {
1863                 if ( $this->preview || $this->section != '' ) {
1864                         $templates = array();
1865                         if ( !isset($this->mParserOutput) ) return $templates;
1866                         foreach( $this->mParserOutput->getTemplates() as $ns => $template) {
1867                                 foreach( array_keys( $template ) as $dbk ) {
1868                                         $templates[] = Title::makeTitle($ns, $dbk);
1869                                 }
1870                         }
1871                         return $templates;
1872                 } else {
1873                         return $this->mArticle->getUsedTemplates();
1874                 }
1875         }
1876
1877         /**
1878          * Call the stock "user is blocked" page
1879          */
1880         function blockedPage() {
1881                 global $wgOut, $wgUser;
1882                 $wgOut->blockedPage( false ); # Standard block notice on the top, don't 'return'
1883
1884                 # If the user made changes, preserve them when showing the markup
1885                 # (This happens when a user is blocked during edit, for instance)
1886                 $first = $this->firsttime || ( !$this->save && $this->textbox1 == '' );
1887                 if ( $first ) {
1888                         $source = $this->mTitle->exists() ? $this->getContent() : false;
1889                 } else {
1890                         $source = $this->textbox1;
1891                 }
1892
1893                 # Spit out the source or the user's modified version
1894                 if ( $source !== false ) {
1895                         $rows = $wgUser->getIntOption( 'rows' );
1896                         $cols = $wgUser->getIntOption( 'cols' );
1897                         $attribs = array( 'id' => 'wpTextbox1', 'name' => 'wpTextbox1', 'cols' => $cols, 'rows' => $rows, 'readonly' => 'readonly' );
1898                         $wgOut->addHTML( '<hr />' );
1899                         $wgOut->addWikiMsg( $first ? 'blockedoriginalsource' : 'blockededitsource', $this->mTitle->getPrefixedText() );
1900                         # Why we don't use Xml::element here?
1901                         # Is it because if $source is '', it returns <textarea />?
1902                         $wgOut->addHTML( Xml::openElement( 'textarea', $attribs ) . htmlspecialchars( $source ) . Xml::closeElement( 'textarea' ) );
1903                 }
1904         }
1905
1906         /**
1907          * Produce the stock "please login to edit pages" page
1908          */
1909         function userNotLoggedInPage() {
1910                 global $wgUser, $wgOut, $wgTitle;
1911                 $skin = $wgUser->getSkin();
1912
1913                 $loginTitle = SpecialPage::getTitleFor( 'Userlogin' );
1914                 $loginLink = $skin->link(
1915                         $loginTitle,
1916                         wfMsgHtml( 'loginreqlink' ),
1917                         array(),
1918                         array( 'returnto' => $wgTitle->getPrefixedText() ),
1919                         array( 'known', 'noclasses' )
1920                 );
1921
1922                 $wgOut->setPageTitle( wfMsg( 'whitelistedittitle' ) );
1923                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1924                 $wgOut->setArticleRelated( false );
1925
1926                 $wgOut->addHTML( wfMsgWikiHtml( 'whitelistedittext', $loginLink ) );
1927                 $wgOut->returnToMain( false, $wgTitle );
1928         }
1929
1930         /**
1931          * Creates a basic error page which informs the user that
1932          * they have attempted to edit a nonexistent section.
1933          */
1934         function noSuchSectionPage() {
1935                 global $wgOut, $wgTitle;
1936
1937                 $wgOut->setPageTitle( wfMsg( 'nosuchsectiontitle' ) );
1938                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1939                 $wgOut->setArticleRelated( false );
1940
1941                 $wgOut->addWikiMsg( 'nosuchsectiontext', $this->section );
1942                 $wgOut->returnToMain( false, $wgTitle );
1943         }
1944
1945         /**
1946          * Produce the stock "your edit contains spam" page
1947          *
1948          * @param $match Text which triggered one or more filters
1949          */
1950         function spamPage( $match = false ) {
1951                 global $wgOut, $wgTitle;
1952
1953                 $wgOut->setPageTitle( wfMsg( 'spamprotectiontitle' ) );
1954                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1955                 $wgOut->setArticleRelated( false );
1956
1957                 $wgOut->addHTML( '<div id="spamprotected">' );
1958                 $wgOut->addWikiMsg( 'spamprotectiontext' );
1959                 if ( $match )
1960                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
1961                 $wgOut->addHTML( '</div>' );
1962
1963                 $wgOut->returnToMain( false, $wgTitle );
1964         }
1965
1966         /**
1967          * @private
1968          * @todo document
1969          */
1970         function mergeChangesInto( &$editText ){
1971                 $fname = 'EditPage::mergeChangesInto';
1972                 wfProfileIn( $fname );
1973
1974                 $db = wfGetDB( DB_MASTER );
1975
1976                 // This is the revision the editor started from
1977                 $baseRevision = $this->getBaseRevision();
1978                 if ( is_null( $baseRevision ) ) {
1979                         wfProfileOut( $fname );
1980                         return false;
1981                 }
1982                 $baseText = $baseRevision->getText();
1983
1984                 // The current state, we want to merge updates into it
1985                 $currentRevision = Revision::loadFromTitle( $db, $this->mTitle );
1986                 if ( is_null( $currentRevision ) ) {
1987                         wfProfileOut( $fname );
1988                         return false;
1989                 }
1990                 $currentText = $currentRevision->getText();
1991
1992                 $result = '';
1993                 if ( wfMerge( $baseText, $editText, $currentText, $result ) ) {
1994                         $editText = $result;
1995                         wfProfileOut( $fname );
1996                         return true;
1997                 } else {
1998                         wfProfileOut( $fname );
1999                         return false;
2000                 }
2001         }
2002
2003         /**
2004          * Check if the browser is on a blacklist of user-agents known to
2005          * mangle UTF-8 data on form submission. Returns true if Unicode
2006          * should make it through, false if it's known to be a problem.
2007          * @return bool
2008          * @private
2009          */
2010         function checkUnicodeCompliantBrowser() {
2011                 global $wgBrowserBlackList;
2012                 if ( empty( $_SERVER["HTTP_USER_AGENT"] ) ) {
2013                         // No User-Agent header sent? Trust it by default...
2014                         return true;
2015                 }
2016                 $currentbrowser = $_SERVER["HTTP_USER_AGENT"];
2017                 foreach ( $wgBrowserBlackList as $browser ) {
2018                         if ( preg_match($browser, $currentbrowser) ) {
2019                                 return false;
2020                         }
2021                 }
2022                 return true;
2023         }
2024
2025         /**
2026          * @deprecated use $wgParser->stripSectionName()
2027          */
2028         function pseudoParseSectionAnchor( $text ) {
2029                 global $wgParser;
2030                 return $wgParser->stripSectionName( $text );
2031         }
2032
2033         /**
2034          * Format an anchor fragment as it would appear for a given section name
2035          * @param string $text
2036          * @return string
2037          * @private
2038          */
2039         function sectionAnchor( $text ) {
2040                 global $wgParser;
2041                 return $wgParser->guessSectionNameFromWikiText( $text );
2042         }
2043
2044         /**
2045          * Shows a bulletin board style toolbar for common editing functions.
2046          * It can be disabled in the user preferences.
2047          * The necessary JavaScript code can be found in skins/common/edit.js.
2048          *
2049          * @return string
2050          */
2051         static function getEditToolbar() {
2052                 global $wgStylePath, $wgContLang, $wgLang;
2053
2054                 /**
2055                  * toolarray an array of arrays which each include the filename of
2056                  * the button image (without path), the opening tag, the closing tag,
2057                  * and optionally a sample text that is inserted between the two when no
2058                  * selection is highlighted.
2059                  * The tip text is shown when the user moves the mouse over the button.
2060                  *
2061                  * Already here are accesskeys (key), which are not used yet until someone
2062                  * can figure out a way to make them work in IE. However, we should make
2063                  * sure these keys are not defined on the edit page.
2064                  */
2065                 $toolarray = array(
2066                         array(
2067                                 'image'  => $wgLang->getImageFile('button-bold'),
2068                                 'id'     => 'mw-editbutton-bold',
2069                                 'open'   => '\'\'\'',
2070                                 'close'  => '\'\'\'',
2071                                 'sample' => wfMsg('bold_sample'),
2072                                 'tip'    => wfMsg('bold_tip'),
2073                                 'key'    => 'B'
2074                         ),
2075                         array(
2076                                 'image'  => $wgLang->getImageFile('button-italic'),
2077                                 'id'     => 'mw-editbutton-italic',
2078                                 'open'   => '\'\'',
2079                                 'close'  => '\'\'',
2080                                 'sample' => wfMsg('italic_sample'),
2081                                 'tip'    => wfMsg('italic_tip'),
2082                                 'key'    => 'I'
2083                         ),
2084                         array(
2085                                 'image'  => $wgLang->getImageFile('button-link'),
2086                                 'id'     => 'mw-editbutton-link',
2087                                 'open'   => '[[',
2088                                 'close'  => ']]',
2089                                 'sample' => wfMsg('link_sample'),
2090                                 'tip'    => wfMsg('link_tip'),
2091                                 'key'    => 'L'
2092                         ),
2093                         array(
2094                                 'image'  => $wgLang->getImageFile('button-extlink'),
2095                                 'id'     => 'mw-editbutton-extlink',
2096                                 'open'   => '[',
2097                                 'close'  => ']',
2098                                 'sample' => wfMsg('extlink_sample'),
2099                                 'tip'    => wfMsg('extlink_tip'),
2100                                 'key'    => 'X'
2101                         ),
2102                         array(
2103                                 'image'  => $wgLang->getImageFile('button-headline'),
2104                                 'id'     => 'mw-editbutton-headline',
2105                                 'open'   => "\n== ",
2106                                 'close'  => " ==\n",
2107                                 'sample' => wfMsg('headline_sample'),
2108                                 'tip'    => wfMsg('headline_tip'),
2109                                 'key'    => 'H'
2110                         ),
2111                         array(
2112                                 'image'  => $wgLang->getImageFile('button-image'),
2113                                 'id'     => 'mw-editbutton-image',
2114                                 'open'   => '[['.$wgContLang->getNsText(NS_FILE).':',
2115                                 'close'  => ']]',
2116                                 'sample' => wfMsg('image_sample'),
2117                                 'tip'    => wfMsg('image_tip'),
2118                                 'key'    => 'D'
2119                         ),
2120                         array(
2121                                 'image'  => $wgLang->getImageFile('button-media'),
2122                                 'id'     => 'mw-editbutton-media',
2123                                 'open'   => '[['.$wgContLang->getNsText(NS_MEDIA).':',
2124                                 'close'  => ']]',
2125                                 'sample' => wfMsg('media_sample'),
2126                                 'tip'    => wfMsg('media_tip'),
2127                                 'key'    => 'M'
2128                         ),
2129                         array(
2130                                 'image'  => $wgLang->getImageFile('button-math'),
2131                                 'id'     => 'mw-editbutton-math',
2132                                 'open'   => "<math>",
2133                                 'close'  => "</math>",
2134                                 'sample' => wfMsg('math_sample'),
2135                                 'tip'    => wfMsg('math_tip'),
2136                                 'key'    => 'C'
2137                         ),
2138                         array(
2139                                 'image'  => $wgLang->getImageFile('button-nowiki'),
2140                                 'id'     => 'mw-editbutton-nowiki',
2141                                 'open'   => "<nowiki>",
2142                                 'close'  => "</nowiki>",
2143                                 'sample' => wfMsg('nowiki_sample'),
2144                                 'tip'    => wfMsg('nowiki_tip'),
2145                                 'key'    => 'N'
2146                         ),
2147                         array(
2148                                 'image'  => $wgLang->getImageFile('button-sig'),
2149                                 'id'     => 'mw-editbutton-signature',
2150                                 'open'   => '--~~~~',
2151                                 'close'  => '',
2152                                 'sample' => '',
2153                                 'tip'    => wfMsg('sig_tip'),
2154                                 'key'    => 'Y'
2155                         ),
2156                         array(
2157                                 'image'  => $wgLang->getImageFile('button-hr'),
2158                                 'id'     => 'mw-editbutton-hr',
2159                                 'open'   => "\n----\n",
2160                                 'close'  => '',
2161                                 'sample' => '',
2162                                 'tip'    => wfMsg('hr_tip'),
2163                                 'key'    => 'R'
2164                         )
2165                 );
2166                 $toolbar = "<div id='toolbar'>\n";
2167
2168                 $script = '';
2169                 foreach ( $toolarray as $tool ) {
2170                         $params = array(
2171                                 $image = $wgStylePath.'/common/images/'.$tool['image'],
2172                                 // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
2173                                 // Older browsers show a "speedtip" type message only for ALT.
2174                                 // Ideally these should be different, realistically they
2175                                 // probably don't need to be.
2176                                 $tip = $tool['tip'],
2177                                 $open = $tool['open'],
2178                                 $close = $tool['close'],
2179                                 $sample = $tool['sample'],
2180                                 $cssId = $tool['id'],
2181                         );
2182
2183                         $paramList = implode( ',',
2184                                 array_map( array( 'Xml', 'encodeJsVar' ), $params ) );
2185                         $script .= "addButton($paramList);\n";
2186                 }
2187                 $toolbar .= Html::inlineScript( "\n$script\n" );
2188
2189                 $toolbar .= "\n</div>";
2190
2191                 wfRunHooks( 'EditPageBeforeEditToolbar', array( &$toolbar ) );
2192
2193                 return $toolbar;
2194         }
2195
2196         /**
2197          * Returns an array of html code of the following checkboxes:
2198          * minor and watch
2199          *
2200          * @param $tabindex Current tabindex
2201          * @param $skin Skin object
2202          * @param $checked Array of checkbox => bool, where bool indicates the checked
2203          *                 status of the checkbox
2204          *
2205          * @return array
2206          */
2207         public function getCheckboxes( &$tabindex, $skin, $checked ) {
2208                 global $wgUser;
2209
2210                 $checkboxes = array();
2211
2212                 $checkboxes['minor'] = '';
2213                 $minorLabel = wfMsgExt('minoredit', array('parseinline'));
2214                 if ( $wgUser->isAllowed('minoredit') ) {
2215                         $attribs = array(
2216                                 'tabindex'  => ++$tabindex,
2217                                 'accesskey' => wfMsg( 'accesskey-minoredit' ),
2218                                 'id'        => 'wpMinoredit',
2219                         );
2220                         $checkboxes['minor'] =
2221                                 Xml::check( 'wpMinoredit', $checked['minor'], $attribs ) .
2222                                 "&nbsp;<label for='wpMinoredit'".$skin->tooltip('minoredit', 'withaccess').">{$minorLabel}</label>";
2223                 }
2224
2225                 $watchLabel = wfMsgExt('watchthis', array('parseinline'));
2226                 $checkboxes['watch'] = '';
2227                 if ( $wgUser->isLoggedIn() ) {
2228                         $attribs = array(
2229                                 'tabindex'  => ++$tabindex,
2230                                 'accesskey' => wfMsg( 'accesskey-watch' ),
2231                                 'id'        => 'wpWatchthis',
2232                         );
2233                         $checkboxes['watch'] =
2234                                 Xml::check( 'wpWatchthis', $checked['watch'], $attribs ) .
2235                                 "&nbsp;<label for='wpWatchthis'".$skin->tooltip('watch', 'withaccess').">{$watchLabel}</label>";
2236                 }
2237                 wfRunHooks( 'EditPageBeforeEditChecks', array( &$this, &$checkboxes, &$tabindex ) );
2238                 return $checkboxes;
2239         }
2240
2241         /**
2242          * Returns an array of html code of the following buttons:
2243          * save, diff, preview and live
2244          *
2245          * @param $tabindex Current tabindex
2246          *
2247          * @return array
2248          */
2249         public function getEditButtons(&$tabindex) {
2250                 global $wgLivePreview, $wgUser;
2251
2252                 $buttons = array();
2253
2254                 $temp = array(
2255                         'id'        => 'wpSave',
2256                         'name'      => 'wpSave',
2257                         'type'      => 'submit',
2258                         'tabindex'  => ++$tabindex,
2259                         'value'     => wfMsg('savearticle'),
2260                         'accesskey' => wfMsg('accesskey-save'),
2261                         'title'     => wfMsg( 'tooltip-save' ).' ['.wfMsg( 'accesskey-save' ).']',
2262                 );
2263                 $buttons['save'] = Xml::element('input', $temp, '');
2264
2265                 ++$tabindex; // use the same for preview and live preview
2266                 if ( $wgLivePreview && $wgUser->getOption( 'uselivepreview' ) ) {
2267                         $this->doLivePreviewScript(); // Add to output
2268
2269                         $temp = array(
2270                                 'id'        => 'wpPreview',
2271                                 'name'      => 'wpPreview',
2272                                 'type'      => 'submit',
2273                                 'tabindex'  => $tabindex,
2274                                 'value'     => wfMsg('showpreview'),
2275                                 'accesskey' => '',
2276                                 'title'     => wfMsg( 'tooltip-preview' ).' ['.wfMsg( 'accesskey-preview' ).']',
2277                                 'style'     => 'display: none;',
2278                         );
2279                         $buttons['preview'] = Xml::element('input', $temp, '');
2280
2281                         $temp = array(
2282                                 'id'        => 'wpLivePreview',
2283                                 'name'      => 'wpLivePreview',
2284                                 'type'      => 'submit',
2285                                 'tabindex'  => $tabindex,
2286                                 'value'     => wfMsg('showlivepreview'),
2287                                 'accesskey' => wfMsg('accesskey-preview'),
2288                                 'title'     => '',
2289                         );
2290
2291                         $buttons['live'] = Xml::element('input', $temp, '');
2292                 } else {
2293                         $temp = array(
2294                                 'id'        => 'wpPreview',
2295                                 'name'      => 'wpPreview',
2296                                 'type'      => 'submit',
2297                                 'tabindex'  => $tabindex,
2298                                 'value'     => wfMsg('showpreview'),
2299                                 'accesskey' => wfMsg('accesskey-preview'),
2300                                 'title'     => wfMsg( 'tooltip-preview' ).' ['.wfMsg( 'accesskey-preview' ).']',
2301                         );
2302                         $buttons['preview'] = Xml::element('input', $temp, '');
2303                         $buttons['live'] = '';
2304                 }
2305
2306                 $temp = array(
2307                         'id'        => 'wpDiff',
2308                         'name'      => 'wpDiff',
2309                         'type'      => 'submit',
2310                         'tabindex'  => ++$tabindex,
2311                         'value'     => wfMsg('showdiff'),
2312                         'accesskey' => wfMsg('accesskey-diff'),
2313                         'title'     => wfMsg( 'tooltip-diff' ).' ['.wfMsg( 'accesskey-diff' ).']',
2314                 );
2315                 $buttons['diff'] = Xml::element('input', $temp, '');
2316
2317                 wfRunHooks( 'EditPageBeforeEditButtons', array( &$this, &$buttons, &$tabindex ) );
2318                 return $buttons;
2319         }
2320
2321         /**
2322          * Output preview text only. This can be sucked into the edit page
2323          * via JavaScript, and saves the server time rendering the skin as
2324          * well as theoretically being more robust on the client (doesn't
2325          * disturb the edit box's undo history, won't eat your text on
2326          * failure, etc).
2327          *
2328          * @todo This doesn't include category or interlanguage links.
2329          *       Would need to enhance it a bit, <s>maybe wrap them in XML
2330          *       or something...</s> that might also require more skin
2331          *       initialization, so check whether that's a problem.
2332          */
2333         function livePreview() {
2334                 global $wgOut;
2335                 $wgOut->disable();
2336                 header( 'Content-type: text/xml; charset=utf-8' );
2337                 header( 'Cache-control: no-cache' );
2338
2339                 $previewText = $this->getPreviewText();
2340                 #$categories = $skin->getCategoryLinks();
2341
2342                 $s =
2343                 '<?xml version="1.0" encoding="UTF-8" ?>' . "\n" .
2344                 Xml::tags( 'livepreview', null,
2345                         Xml::element( 'preview', null, $previewText )
2346                         #.      Xml::element( 'category', null, $categories )
2347                 );
2348                 echo $s;
2349         }
2350
2351
2352         /**
2353          * Get a diff between the current contents of the edit box and the
2354          * version of the page we're editing from.
2355          *
2356          * If this is a section edit, we'll replace the section as for final
2357          * save and then make a comparison.
2358          */
2359         function showDiff() {
2360                 $oldtext = $this->mArticle->fetchContent();
2361                 $newtext = $this->mArticle->replaceSection(
2362                         $this->section, $this->textbox1, $this->summary, $this->edittime );
2363                 $newtext = $this->mArticle->preSaveTransform( $newtext );
2364                 $oldtitle = wfMsgExt( 'currentrev', array('parseinline') );
2365                 $newtitle = wfMsgExt( 'yourtext', array('parseinline') );
2366                 if ( $oldtext !== false  || $newtext != '' ) {
2367                         $de = new DifferenceEngine( $this->mTitle );
2368                         $de->setText( $oldtext, $newtext );
2369                         $difftext = $de->getDiff( $oldtitle, $newtitle );
2370                         $de->showDiffStyle();
2371                 } else {
2372                         $difftext = '';
2373                 }
2374
2375                 global $wgOut;
2376                 $wgOut->addHTML( '<div id="wikiDiff">' . $difftext . '</div>' );
2377         }
2378
2379         /**
2380          * Filter an input field through a Unicode de-armoring process if it
2381          * came from an old browser with known broken Unicode editing issues.
2382          *
2383          * @param WebRequest $request
2384          * @param string $field
2385          * @return string
2386          * @private
2387          */
2388         function safeUnicodeInput( $request, $field ) {
2389                 $text = rtrim( $request->getText( $field ) );
2390                 return $request->getBool( 'safemode' )
2391                         ? $this->unmakesafe( $text )
2392                         : $text;
2393         }
2394
2395         /**
2396          * Filter an output field through a Unicode armoring process if it is
2397          * going to an old browser with known broken Unicode editing issues.
2398          *
2399          * @param string $text
2400          * @return string
2401          * @private
2402          */
2403         function safeUnicodeOutput( $text ) {
2404                 global $wgContLang;
2405                 $codedText = $wgContLang->recodeForEdit( $text );
2406                 return $this->checkUnicodeCompliantBrowser()
2407                         ? $codedText
2408                         : $this->makesafe( $codedText );
2409         }
2410
2411         /**
2412          * A number of web browsers are known to corrupt non-ASCII characters
2413          * in a UTF-8 text editing environment. To protect against this,
2414          * detected browsers will be served an armored version of the text,
2415          * with non-ASCII chars converted to numeric HTML character references.
2416          *
2417          * Preexisting such character references will have a 0 added to them
2418          * to ensure that round-trips do not alter the original data.
2419          *
2420          * @param string $invalue
2421          * @return string
2422          * @private
2423          */
2424         function makesafe( $invalue ) {
2425                 // Armor existing references for reversability.
2426                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
2427
2428                 $bytesleft = 0;
2429                 $result = "";
2430                 $working = 0;
2431                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
2432                         $bytevalue = ord( $invalue{$i} );
2433                         if ( $bytevalue <= 0x7F ) { //0xxx xxxx
2434                                 $result .= chr( $bytevalue );
2435                                 $bytesleft = 0;
2436                         } elseif ( $bytevalue <= 0xBF ) { //10xx xxxx
2437                                 $working = $working << 6;
2438                                 $working += ($bytevalue & 0x3F);
2439                                 $bytesleft--;
2440                                 if ( $bytesleft <= 0 ) {
2441                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
2442                                 }
2443                         } elseif ( $bytevalue <= 0xDF ) { //110x xxxx
2444                                 $working = $bytevalue & 0x1F;
2445                                 $bytesleft = 1;
2446                         } elseif ( $bytevalue <= 0xEF ) { //1110 xxxx
2447                                 $working = $bytevalue & 0x0F;
2448                                 $bytesleft = 2;
2449                         } else { //1111 0xxx
2450                                 $working = $bytevalue & 0x07;
2451                                 $bytesleft = 3;
2452                         }
2453                 }
2454                 return $result;
2455         }
2456
2457         /**
2458          * Reverse the previously applied transliteration of non-ASCII characters
2459          * back to UTF-8. Used to protect data from corruption by broken web browsers
2460          * as listed in $wgBrowserBlackList.
2461          *
2462          * @param string $invalue
2463          * @return string
2464          * @private
2465          */
2466         function unmakesafe( $invalue ) {
2467                 $result = "";
2468                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
2469                         if ( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue{$i+3} != '0' ) ) {
2470                                 $i += 3;
2471                                 $hexstring = "";
2472                                 do {
2473                                         $hexstring .= $invalue{$i};
2474                                         $i++;
2475                                 } while( ctype_xdigit( $invalue{$i} ) && ( $i < strlen( $invalue ) ) );
2476
2477                                 // Do some sanity checks. These aren't needed for reversability,
2478                                 // but should help keep the breakage down if the editor
2479                                 // breaks one of the entities whilst editing.
2480                                 if ( (substr($invalue,$i,1)==";") and (strlen($hexstring) <= 6) ) {
2481                                         $codepoint = hexdec($hexstring);
2482                                         $result .= codepointToUtf8( $codepoint );
2483                                 } else {
2484                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
2485                                 }
2486                         } else {
2487                                 $result .= substr( $invalue, $i, 1 );
2488                         }
2489                 }
2490                 // reverse the transform that we made for reversability reasons.
2491                 return strtr( $result, array( "&#x0" => "&#x" ) );
2492         }
2493
2494         function noCreatePermission() {
2495                 global $wgOut;
2496                 $wgOut->setPageTitle( wfMsg( 'nocreatetitle' ) );
2497                 $wgOut->addWikiMsg( 'nocreatetext' );
2498         }
2499
2500         /**
2501          * If there are rows in the deletion/move log for this page, show them,
2502          * along with a nice little note for the user
2503          *
2504          * @param OutputPage $out
2505          */
2506         protected function showLogs( $out ) {
2507                 global $wgUser;
2508                 $loglist = new LogEventsList( $wgUser->getSkin(), $out );
2509                 $pager = new LogPager( $loglist, array('move', 'delete'), false,
2510                         $this->mTitle->getPrefixedText(), '', array( "log_action != 'revision'" ) );
2511
2512                 $count = $pager->getNumRows();
2513                 if ( $count > 0 ) {
2514                         $pager->mLimit = 10;
2515                         $out->addHTML( '<div class="mw-warning-with-logexcerpt">' );
2516                         $out->addWikiMsg( 'recreate-moveddeleted-warn' );
2517                         $out->addHTML(
2518                                 $loglist->beginLogEventsList() .
2519                                 $pager->getBody() .
2520                                 $loglist->endLogEventsList()
2521                         );
2522                         if($count > 10){
2523                                 $out->addHTML( $wgUser->getSkin()->link(
2524                                         SpecialPage::getTitleFor( 'Log' ),
2525                                         wfMsgHtml( 'log-fulllog' ),
2526                                         array(),
2527                                         array( 'page' => $this->mTitle->getPrefixedText() ) ) );
2528                         }
2529                         $out->addHTML( '</div>' );
2530                         return true;
2531                 }
2532
2533                 return false;
2534         }
2535
2536         /**
2537          * Attempt submission
2538          * @return bool false if output is done, true if the rest of the form should be displayed
2539          */
2540         function attemptSave() {
2541                 global $wgUser, $wgOut, $wgTitle, $wgRequest;
2542
2543                 $resultDetails = false;
2544                 # Allow bots to exempt some edits from bot flagging
2545                 $bot = $wgUser->isAllowed('bot') && $wgRequest->getBool('bot',true);
2546                 $value = $this->internalAttemptSave( $resultDetails, $bot );
2547
2548                 if ( $value == self::AS_SUCCESS_UPDATE || $value == self::AS_SUCCESS_NEW_ARTICLE ) {
2549                         $this->didSave = true;
2550                 }
2551
2552                 switch ($value) {
2553                         case self::AS_HOOK_ERROR_EXPECTED:
2554                         case self::AS_CONTENT_TOO_BIG:
2555                         case self::AS_ARTICLE_WAS_DELETED:
2556                         case self::AS_CONFLICT_DETECTED:
2557                         case self::AS_SUMMARY_NEEDED:
2558                         case self::AS_TEXTBOX_EMPTY:
2559                         case self::AS_MAX_ARTICLE_SIZE_EXCEEDED:
2560                         case self::AS_END:
2561                                 return true;
2562
2563                         case self::AS_HOOK_ERROR:
2564                         case self::AS_FILTERING:
2565                         case self::AS_SUCCESS_NEW_ARTICLE:
2566                         case self::AS_SUCCESS_UPDATE:
2567                                 return false;
2568
2569                         case self::AS_SPAM_ERROR:
2570                                 $this->spamPage ( $resultDetails['spam'] );
2571                                 return false;
2572
2573                         case self::AS_BLOCKED_PAGE_FOR_USER:
2574                                 $this->blockedPage();
2575                                 return false;
2576
2577                         case self::AS_IMAGE_REDIRECT_ANON:
2578                                 $wgOut->showErrorPage( 'uploadnologin', 'uploadnologintext' );
2579                                 return false;
2580
2581                         case self::AS_READ_ONLY_PAGE_ANON:
2582                                 $this->userNotLoggedInPage();
2583                                 return false;
2584
2585                         case self::AS_READ_ONLY_PAGE_LOGGED:
2586                         case self::AS_READ_ONLY_PAGE:
2587                                 $wgOut->readOnlyPage();
2588                                 return false;
2589
2590                         case self::AS_RATE_LIMITED:
2591                                 $wgOut->rateLimited();
2592                                 return false;
2593
2594                         case self::AS_NO_CREATE_PERMISSION;
2595                                 $this->noCreatePermission();
2596                                 return;
2597
2598                         case self::AS_BLANK_ARTICLE:
2599                                 $wgOut->redirect( $wgTitle->getFullURL() );
2600                                 return false;
2601
2602                         case self::AS_IMAGE_REDIRECT_LOGGED:
2603                                 $wgOut->permissionRequired( 'upload' );
2604                                 return false;
2605                 }
2606         }
2607
2608         function getBaseRevision() {
2609                 if ( $this->mBaseRevision == false ) {
2610                         $db = wfGetDB( DB_MASTER );
2611                         $baseRevision = Revision::loadFromTimestamp(
2612                                 $db, $this->mTitle, $this->edittime );
2613                         return $this->mBaseRevision = $baseRevision;
2614                 } else {
2615                         return $this->mBaseRevision;
2616                 }
2617         }
2618 }