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  * $this->mContextTitle 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  * Surgeon General's Warning: prolonged exposure to this class is known to cause
  20  * headaches, which may be fatal.
  21  */
  22 class EditPage {
  23         const AS_SUCCESS_UPDATE            = 200;
  24         const AS_SUCCESS_NEW_ARTICLE       = 201;
  25         const AS_HOOK_ERROR                = 210;
  26         const AS_FILTERING                 = 211;
  27         const AS_HOOK_ERROR_EXPECTED       = 212;
  28         const AS_BLOCKED_PAGE_FOR_USER     = 215;
  29         const AS_CONTENT_TOO_BIG           = 216;
  30         const AS_USER_CANNOT_EDIT          = 217;
  31         const AS_READ_ONLY_PAGE_ANON       = 218;
  32         const AS_READ_ONLY_PAGE_LOGGED     = 219;
  33         const AS_READ_ONLY_PAGE            = 220;
  34         const AS_RATE_LIMITED              = 221;
  35         const AS_ARTICLE_WAS_DELETED       = 222;
  36         const AS_NO_CREATE_PERMISSION      = 223;
  37         const AS_BLANK_ARTICLE             = 224;
  38         const AS_CONFLICT_DETECTED         = 225;
  39         const AS_SUMMARY_NEEDED            = 226;
  40         const AS_TEXTBOX_EMPTY             = 228;
  41         const AS_MAX_ARTICLE_SIZE_EXCEEDED = 229;
  42         const AS_OK                        = 230;
  43         const AS_END                       = 231;
  44         const AS_SPAM_ERROR                = 232;
  45         const AS_IMAGE_REDIRECT_ANON       = 233;
  46         const AS_IMAGE_REDIRECT_LOGGED     = 234;
  47
  48         /**
  49          * @var Article
  50          */
  51         var $mArticle;
  52
  53         /**
  54          * @var Title
  55          */
  56         var $mTitle;
  57         private $mContextTitle = null;
  58         var $action = 'submit';
  59         var $isConflict = false;
  60         var $isCssJsSubpage = false;
  61         var $isCssSubpage = false;
  62         var $isJsSubpage = false;
  63         var $isWrongCaseCssJsPage = false;
  64         var $isNew = false; // new page or new section
  65         var $deletedSinceEdit;
  66         var $formtype;
  67         var $firsttime;
  68         var $lastDelete;
  69         var $mTokenOk = false;
  70         var $mTokenOkExceptSuffix = false;
  71         var $mTriedSave = false;
  72         var $incompleteForm = false;
  73         var $tooBig = false;
  74         var $kblength = false;
  75         var $missingComment = false;
  76         var $missingSummary = false;
  77         var $allowBlankSummary = false;
  78         var $autoSumm = '';
  79         var $hookError = '';
  80         #var $mPreviewTemplates;
  81
  82         /**
  83          * @var ParserOutput
  84          */
  85         var $mParserOutput;
  86
  87         var $mBaseRevision = false;
  88         var $mShowSummaryField = true;
  89
  90         # Form values
  91         var $save = false, $preview = false, $diff = false;
  92         var $minoredit = false, $watchthis = false, $recreate = false;
  93         var $textbox1 = '', $textbox2 = '', $summary = '', $nosummary = false;
  94         var $edittime = '', $section = '', $sectiontitle = '', $starttime = '';
  95         var $oldid = 0, $editintro = '', $scrolltop = null, $bot = true;
  96
  97         # Placeholders for text injection by hooks (must be HTML)
  98         # extensions should take care to _append_ to the present value
  99         public $editFormPageTop = ''; // Before even the preview
 100         public $editFormTextTop = '';
 101         public $editFormTextBeforeContent = '';
 102         public $editFormTextAfterWarn = '';
 103         public $editFormTextAfterTools = '';
 104         public $editFormTextBottom = '';
 105         public $editFormTextAfterContent = '';
 106         public $previewTextAfterContent = '';
 107         public $mPreloadText = '';
 108
 109         /* $didSave should be set to true whenever an article was succesfully altered. */
 110         public $didSave = false;
 111         public $undidRev = 0;
 112
 113         public $suppressIntro = false;
 114
 115         /**
 116          * @todo document
 117          * @param $article Article
 118          */
 119         public function __construct( $article ) {
 120                 $this->mArticle = $article;
 121                 $this->mTitle = $article->getTitle();
 122         }
 123
 124         /**
 125          * @return Article
 126          */
 127         public function getArticle() {
 128                 return $this->mArticle;
 129         }
 130
 131         /**
 132          * @since 1.19
 133          * @return Title
 134          */
 135         public function getTitle() {
 136                 return $this->mTitle;
 137         }
 138
 139         /**
 140          * Set the context Title object
 141          *
 142          * @param $title Title object or null
 143          */
 144         public function setContextTitle( $title ) {
 145                 $this->mContextTitle = $title;
 146         }
 147
 148         /**
 149          * Get the context title object.
 150          * If not set, $wgTitle will be returned. This behavior might changed in
 151          * the future to return $this->mTitle instead.
 152          *
 153          * @return Title object
 154          */
 155         public function getContextTitle() {
 156                 if ( is_null( $this->mContextTitle ) ) {
 157                         global $wgTitle;
 158                         return $wgTitle;
 159                 } else {
 160                         return $this->mContextTitle;
 161                 }
 162         }
 163
 164         function submit() {
 165                 $this->edit();
 166         }
 167
 168         /**
 169          * This is the function that gets called for "action=edit". It
 170          * sets up various member variables, then passes execution to
 171          * another function, usually showEditForm()
 172          *
 173          * The edit form is self-submitting, so that when things like
 174          * preview and edit conflicts occur, we get the same form back
 175          * with the extra stuff added.  Only when the final submission
 176          * is made and all is well do we actually save and redirect to
 177          * the newly-edited page.
 178          */
 179         function edit() {
 180                 global $wgOut, $wgRequest, $wgUser;
 181                 // Allow extensions to modify/prevent this form or submission
 182                 if ( !wfRunHooks( 'AlternateEdit', array( $this ) ) ) {
 183                         return;
 184                 }
 185
 186                 wfProfileIn( __METHOD__ );
 187                 wfDebug( __METHOD__.": enter\n" );
 188
 189                 // If they used redlink=1 and the page exists, redirect to the main article
 190                 if ( $wgRequest->getBool( 'redlink' ) && $this->mTitle->exists() ) {
 191                         $wgOut->redirect( $this->mTitle->getFullURL() );
 192                         wfProfileOut( __METHOD__ );
 193                         return;
 194                 }
 195
 196                 $this->importFormData( $wgRequest );
 197                 $this->firsttime = false;
 198
 199                 if ( $this->live ) {
 200                         $this->livePreview();
 201                         wfProfileOut( __METHOD__ );
 202                         return;
 203                 }
 204
 205                 if ( wfReadOnly() && $this->save ) {
 206                         // Force preview
 207                         $this->save = false;
 208                         $this->preview = true;
 209                 }
 210
 211                 if ( $this->save ) {
 212                         $this->formtype = 'save';
 213                 } elseif ( $this->preview ) {
 214                         $this->formtype = 'preview';
 215                 } elseif ( $this->diff ) {
 216                         $this->formtype = 'diff';
 217                 } else { # First time through
 218                         $this->firsttime = true;
 219                         if ( $this->previewOnOpen() ) {
 220                                 $this->formtype = 'preview';
 221                         } else {
 222                                 $this->formtype = 'initial';
 223                         }
 224                 }
 225
 226                 $permErrors = $this->getEditPermissionErrors();
 227                 if ( $permErrors ) {
 228                         wfDebug( __METHOD__ . ": User can't edit\n" );
 229                         // Auto-block user's IP if the account was "hard" blocked
 230                         $wgUser->spreadAnyEditBlock();
 231
 232                         $this->displayPermissionsError( $permErrors );
 233
 234                         wfProfileOut( __METHOD__ );
 235                         return;
 236                 }
 237
 238                 $wgOut->addModules( array( 'mediawiki.action.edit' ) );
 239
 240                 if ( $wgUser->getOption( 'uselivepreview', false ) ) {
 241                         $wgOut->addModules( 'mediawiki.legacy.preview' );
 242                 }
 243                 // Bug #19334: textarea jumps when editing articles in IE8
 244                 $wgOut->addStyle( 'common/IE80Fixes.css', 'screen', 'IE 8' );
 245
 246                 wfProfileIn( __METHOD__."-business-end" );
 247
 248                 $this->isConflict = false;
 249                 // css / js subpages of user pages get a special treatment
 250                 $this->isCssJsSubpage       = $this->mTitle->isCssJsSubpage();
 251                 $this->isCssSubpage         = $this->mTitle->isCssSubpage();
 252                 $this->isJsSubpage          = $this->mTitle->isJsSubpage();
 253                 $this->isWrongCaseCssJsPage = $this->isWrongCaseCssJsPage();
 254                 $this->isNew                = !$this->mTitle->exists() || $this->section == 'new';
 255
 256                 # Show applicable editing introductions
 257                 if ( $this->formtype == 'initial' || $this->firsttime )
 258                         $this->showIntro();
 259
 260                 if ( $this->mTitle->isTalkPage() ) {
 261                         $wgOut->addWikiMsg( 'talkpagetext' );
 262                 }
 263
 264                 # Optional notices on a per-namespace and per-page basis
 265                 $editnotice_ns   = 'editnotice-'.$this->mTitle->getNamespace();
 266                 $editnotice_ns_message = wfMessage( $editnotice_ns )->inContentLanguage();
 267                 if ( $editnotice_ns_message->exists() ) {
 268                         $wgOut->addWikiText( $editnotice_ns_message->plain() );
 269                 }
 270                 if ( MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
 271                         $parts = explode( '/', $this->mTitle->getDBkey() );
 272                         $editnotice_base = $editnotice_ns;
 273                         while ( count( $parts ) > 0 ) {
 274                                 $editnotice_base .= '-'.array_shift( $parts );
 275                                 $editnotice_base_msg = wfMessage( $editnotice_base )->inContentLanguage();
 276                                 if ( $editnotice_base_msg->exists() ) {
 277                                         $wgOut->addWikiText( $editnotice_base_msg->plain()  );
 278                                 }
 279                         }
 280                 } else {
 281                         # Even if there are no subpages in namespace, we still don't want / in MW ns.
 282                         $editnoticeText = $editnotice_ns . '-' . str_replace( '/', '-', $this->mTitle->getDBkey() );
 283                         $editnoticeMsg = wfMessage( $editnoticeText )->inContentLanguage();
 284                         if ( $editnoticeMsg->exists() ) {
 285                                 $wgOut->addWikiText( $editnoticeMsg->plain() );
 286                         }
 287                 }
 288
 289                 # Attempt submission here.  This will check for edit conflicts,
 290                 # and redundantly check for locked database, blocked IPs, etc.
 291                 # that edit() already checked just in case someone tries to sneak
 292                 # in the back door with a hand-edited submission URL.
 293
 294                 if ( 'save' == $this->formtype ) {
 295                         if ( !$this->attemptSave() ) {
 296                                 wfProfileOut( __METHOD__."-business-end" );
 297                                 wfProfileOut( __METHOD__ );
 298                                 return;
 299                         }
 300                 }
 301
 302                 # First time through: get contents, set time for conflict
 303                 # checking, etc.
 304                 if ( 'initial' == $this->formtype || $this->firsttime ) {
 305                         if ( $this->initialiseForm() === false ) {
 306                                 $this->noSuchSectionPage();
 307                                 wfProfileOut( __METHOD__."-business-end" );
 308                                 wfProfileOut( __METHOD__ );
 309                                 return;
 310                         }
 311                         if ( !$this->mTitle->getArticleId() )
 312                                 wfRunHooks( 'EditFormPreloadText', array( &$this->textbox1, &$this->mTitle ) );
 313                         else
 314                                 wfRunHooks( 'EditFormInitialText', array( $this ) );
 315                 }
 316
 317                 $this->showEditForm();
 318                 wfProfileOut( __METHOD__."-business-end" );
 319                 wfProfileOut( __METHOD__ );
 320         }
 321
 322         /**
 323          * @return array
 324          */
 325         protected function getEditPermissionErrors() {
 326                 global $wgUser;
 327                 $permErrors = $this->mTitle->getUserPermissionsErrors( 'edit', $wgUser );
 328                 # Can this title be created?
 329                 if ( !$this->mTitle->exists() ) {
 330                         $permErrors = array_merge( $permErrors,
 331                                 wfArrayDiff2( $this->mTitle->getUserPermissionsErrors( 'create', $wgUser ), $permErrors ) );
 332                 }
 333                 # Ignore some permissions errors when a user is just previewing/viewing diffs
 334                 $remove = array();
 335                 foreach( $permErrors as $error ) {
 336                         if ( ( $this->preview || $this->diff ) &&
 337                                 ( $error[0] == 'blockedtext' || $error[0] == 'autoblockedtext' ) )
 338                         {
 339                                 $remove[] = $error;
 340                         }
 341                 }
 342                 $permErrors = wfArrayDiff2( $permErrors, $remove );
 343                 return $permErrors;
 344         }
 345
 346         /**
 347          * Display a permissions error page, like OutputPage::showPermissionsErrorPage(),
 348          * but with the following differences:
 349          * - If redlink=1, the user will be redirect to the page
 350          * - If there is content to display or the error occurs while either saving,
 351          *   previewing or showing the difference, it will be a
 352          *   "View source for ..." page displaying the source code after the error message.
 353          *
 354          * @since 1.19
 355          * @param $permErrors Array of permissions errors, as returned by
 356          *                    Title::getUserPermissionsErrors().
 357          */
 358         protected function displayPermissionsError( array $permErrors ) {
 359                 global $wgRequest, $wgOut;
 360
 361                 if ( $wgRequest->getBool( 'redlink' ) ) {
 362                         // The edit page was reached via a red link.
 363                         // Redirect to the article page and let them click the edit tab if
 364                         // they really want a permission error.
 365                         $wgOut->redirect( $this->mTitle->getFullUrl() );
 366                         return;
 367                 }
 368
 369                 $content = $this->getContent();
 370
 371                 # Use the normal message if there's nothing to display
 372                 if ( $this->firsttime && $content === '' ) {
 373                         $action = $this->mTitle->exists() ? 'edit' :
 374                                 ( $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage' );
 375                         throw new PermissionsError( $action, $permErrors );
 376                 }
 377
 378                 $wgOut->setPageTitle( wfMessage( 'viewsource-title', $this->getContextTitle()->getPrefixedText() ) );
 379                 $wgOut->addBacklinkSubtitle( $this->getContextTitle() );
 380                 $wgOut->addWikiText( $wgOut->formatPermissionsErrorMessage( $permErrors, 'edit' ) );
 381                 $wgOut->addHTML( "<hr />\n" );
 382
 383                 # If the user made changes, preserve them when showing the markup
 384                 # (This happens when a user is blocked during edit, for instance)
 385                 if ( !$this->firsttime ) {
 386                         $content = $this->textbox1;
 387                         $wgOut->addWikiMsg( 'viewyourtext' );
 388                 } else {
 389                         $wgOut->addWikiMsg( 'viewsourcetext' );
 390                 }
 391
 392                 $this->showTextbox( $content, 'wpTextbox1', array( 'readonly' ) );
 393
 394                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'templatesUsed' ),
 395                         Linker::formatTemplates( $this->getTemplates() ) ) );
 396
 397                 if ( $this->mTitle->exists() ) {
 398                         $wgOut->returnToMain( null, $this->mTitle );
 399                 }
 400         }
 401
 402         /**
 403          * Show a read-only error
 404          * Parameters are the same as OutputPage:readOnlyPage()
 405          * Redirect to the article page if redlink=1
 406          * @deprecated in 1.19; use displayPermissionsError() instead
 407          */
 408         function readOnlyPage( $source = null, $protected = false, $reasons = array(), $action = null ) {
 409                 wfDeprecated( __METHOD__, '1.19' );
 410
 411                 global $wgRequest, $wgOut;
 412                 if ( $wgRequest->getBool( 'redlink' ) ) {
 413                         // The edit page was reached via a red link.
 414                         // Redirect to the article page and let them click the edit tab if
 415                         // they really want a permission error.
 416                         $wgOut->redirect( $this->mTitle->getFullUrl() );
 417                 } else {
 418                         $wgOut->readOnlyPage( $source, $protected, $reasons, $action );
 419                 }
 420         }
 421
 422         /**
 423          * Should we show a preview when the edit form is first shown?
 424          *
 425          * @return bool
 426          */
 427         protected function previewOnOpen() {
 428                 global $wgRequest, $wgUser, $wgPreviewOnOpenNamespaces;
 429                 if ( $wgRequest->getVal( 'preview' ) == 'yes' ) {
 430                         // Explicit override from request
 431                         return true;
 432                 } elseif ( $wgRequest->getVal( 'preview' ) == 'no' ) {
 433                         // Explicit override from request
 434                         return false;
 435                 } elseif ( $this->section == 'new' ) {
 436                         // Nothing *to* preview for new sections
 437                         return false;
 438                 } elseif ( ( $wgRequest->getVal( 'preload' ) !== null || $this->mTitle->exists() ) && $wgUser->getOption( 'previewonfirst' ) ) {
 439                         // Standard preference behaviour
 440                         return true;
 441                 } elseif ( !$this->mTitle->exists() &&
 442                   isset($wgPreviewOnOpenNamespaces[$this->mTitle->getNamespace()]) &&
 443                   $wgPreviewOnOpenNamespaces[$this->mTitle->getNamespace()] )
 444                 {
 445                         // Categories are special
 446                         return true;
 447                 } else {
 448                         return false;
 449                 }
 450         }
 451
 452         /**
 453          * Checks whether the user entered a skin name in uppercase,
 454          * e.g. "User:Example/Monobook.css" instead of "monobook.css"
 455          *
 456          * @return bool
 457          */
 458         protected function isWrongCaseCssJsPage() {
 459                 if( $this->mTitle->isCssJsSubpage() ) {
 460                         $name = $this->mTitle->getSkinFromCssJsSubpage();
 461                         $skins = array_merge(
 462                                 array_keys( Skin::getSkinNames() ),
 463                                 array( 'common' )
 464                         );
 465                         return !in_array( $name, $skins )
 466                                 && in_array( strtolower( $name ), $skins );
 467                 } else {
 468                         return false;
 469                 }
 470         }
 471
 472         /**
 473          * Does this EditPage class support section editing?
 474          * This is used by EditPage subclasses to indicate their ui cannot handle section edits
 475          *
 476          * @return bool
 477          */
 478         protected function isSectionEditSupported() {
 479                 return true;
 480         }
 481
 482         /**
 483          * This function collects the form data and uses it to populate various member variables.
 484          * @param $request WebRequest
 485          */
 486         function importFormData( &$request ) {
 487                 global $wgLang, $wgUser;
 488
 489                 wfProfileIn( __METHOD__ );
 490
 491                 # Section edit can come from either the form or a link
 492                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 493
 494                 if ( $request->wasPosted() ) {
 495                         # These fields need to be checked for encoding.
 496                         # Also remove trailing whitespace, but don't remove _initial_
 497                         # whitespace from the text boxes. This may be significant formatting.
 498                         $this->textbox1 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
 499                         if ( !$request->getCheck('wpTextbox2') ) {
 500                                 // Skip this if wpTextbox2 has input, it indicates that we came
 501                                 // from a conflict page with raw page text, not a custom form
 502                                 // modified by subclasses
 503                                 wfProfileIn( get_class($this)."::importContentFormData" );
 504                                 $textbox1 = $this->importContentFormData( $request );
 505                                 if ( isset($textbox1) )
 506                                         $this->textbox1 = $textbox1;
 507                                 wfProfileOut( get_class($this)."::importContentFormData" );
 508                         }
 509
 510                         # Truncate for whole multibyte characters. +5 bytes for ellipsis
 511                         $this->summary = $wgLang->truncate( $request->getText( 'wpSummary' ), 250 );
 512
 513                         # If the summary consists of a heading, e.g. '==Foobar==', extract the title from the
 514                         # header syntax, e.g. 'Foobar'. This is mainly an issue when we are using wpSummary for
 515                         # section titles.
 516                         $this->summary = preg_replace( '/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->summary );
 517
 518                         # Treat sectiontitle the same way as summary.
 519                         # Note that wpSectionTitle is not yet a part of the actual edit form, as wpSummary is
 520                         # currently doing double duty as both edit summary and section title. Right now this
 521                         # is just to allow API edits to work around this limitation, but this should be
 522                         # incorporated into the actual edit form when EditPage is rewritten (Bugs 18654, 26312).
 523                         $this->sectiontitle = $wgLang->truncate( $request->getText( 'wpSectionTitle' ), 250 );
 524                         $this->sectiontitle = preg_replace( '/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->sectiontitle );
 525
 526                         $this->edittime = $request->getVal( 'wpEdittime' );
 527                         $this->starttime = $request->getVal( 'wpStarttime' );
 528
 529                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 530
 531                         if ( $this->textbox1 === '' && $request->getVal( 'wpTextbox1' ) === null ) {
 532                                 // wpTextbox1 field is missing, possibly due to being "too big"
 533                                 // according to some filter rules such as Suhosin's setting for
 534                                 // suhosin.request.max_value_length (d'oh)
 535                                 $this->incompleteForm = true;
 536                         } else {
 537                                 // edittime should be one of our last fields; if it's missing,
 538                                 // the submission probably broke somewhere in the middle.
 539                                 $this->incompleteForm = is_null( $this->edittime );
 540                         }
 541                         if ( $this->incompleteForm ) {
 542                                 # If the form is incomplete, force to preview.
 543                                 wfDebug( __METHOD__ . ": Form data appears to be incomplete\n" );
 544                                 wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
 545                                 $this->preview = true;
 546                         } else {
 547                                 /* Fallback for live preview */
 548                                 $this->preview = $request->getCheck( 'wpPreview' ) || $request->getCheck( 'wpLivePreview' );
 549                                 $this->diff = $request->getCheck( 'wpDiff' );
 550
 551                                 // Remember whether a save was requested, so we can indicate
 552                                 // if we forced preview due to session failure.
 553                                 $this->mTriedSave = !$this->preview;
 554
 555                                 if ( $this->tokenOk( $request ) ) {
 556                                         # Some browsers will not report any submit button
 557                                         # if the user hits enter in the comment box.
 558                                         # The unmarked state will be assumed to be a save,
 559                                         # if the form seems otherwise complete.
 560                                         wfDebug( __METHOD__ . ": Passed token check.\n" );
 561                                 } elseif ( $this->diff ) {
 562                                         # Failed token check, but only requested "Show Changes".
 563                                         wfDebug( __METHOD__ . ": Failed token check; Show Changes requested.\n" );
 564                                 } else {
 565                                         # Page might be a hack attempt posted from
 566                                         # an external site. Preview instead of saving.
 567                                         wfDebug( __METHOD__ . ": Failed token check; forcing preview\n" );
 568                                         $this->preview = true;
 569                                 }
 570                         }
 571                         $this->save = !$this->preview && !$this->diff;
 572                         if ( !preg_match( '/^\d{14}$/', $this->edittime ) ) {
 573                                 $this->edittime = null;
 574                         }
 575
 576                         if ( !preg_match( '/^\d{14}$/', $this->starttime ) ) {
 577                                 $this->starttime = null;
 578                         }
 579
 580                         $this->recreate  = $request->getCheck( 'wpRecreate' );
 581
 582                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 583                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 584
 585                         # Don't force edit summaries when a user is editing their own user or talk page
 586                         if ( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK ) &&
 587                                 $this->mTitle->getText() == $wgUser->getName() )
 588                         {
 589                                 $this->allowBlankSummary = true;
 590                         } else {
 591                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' ) || !$wgUser->getOption( 'forceeditsummary');
 592                         }
 593
 594                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
 595                 } else {
 596                         # Not a posted form? Start with nothing.
 597                         wfDebug( __METHOD__ . ": Not a posted form.\n" );
 598                         $this->textbox1     = '';
 599                         $this->summary      = '';
 600                         $this->sectiontitle = '';
 601                         $this->edittime     = '';
 602                         $this->starttime    = wfTimestampNow();
 603                         $this->edit         = false;
 604                         $this->preview      = false;
 605                         $this->save         = false;
 606                         $this->diff         = false;
 607                         $this->minoredit    = false;
 608                         $this->watchthis    = $request->getBool( 'watchthis', false ); // Watch may be overriden by request parameters
 609                         $this->recreate     = false;
 610
 611                         // When creating a new section, we can preload a section title by passing it as the
 612                         // preloadtitle parameter in the URL (Bug 13100)
 613                         if ( $this->section == 'new' && $request->getVal( 'preloadtitle' ) ) {
 614                                 $this->sectiontitle = $request->getVal( 'preloadtitle' );
 615                                 // Once wpSummary isn't being use for setting section titles, we should delete this.
 616                                 $this->summary = $request->getVal( 'preloadtitle' );
 617                         }
 618                         elseif ( $this->section != 'new' && $request->getVal( 'summary' ) ) {
 619                                 $this->summary = $request->getText( 'summary' );
 620                         }
 621
 622                         if ( $request->getVal( 'minor' ) ) {
 623                                 $this->minoredit = true;
 624                         }
 625                 }
 626
 627                 $this->bot = $request->getBool( 'bot', true );
 628                 $this->nosummary = $request->getBool( 'nosummary' );
 629
 630                 $this->oldid = $request->getInt( 'oldid' );
 631
 632                 $this->live = $request->getCheck( 'live' );
 633                 $this->editintro = $request->getText( 'editintro',
 634                         // Custom edit intro for new sections
 635                         $this->section === 'new' ? 'MediaWiki:addsection-editintro' : '' );
 636
 637                 // Allow extensions to modify form data
 638                 wfRunHooks( 'EditPage::importFormData', array( $this, $request ) );
 639
 640                 wfProfileOut( __METHOD__ );
 641         }
 642
 643         /**
 644          * Subpage overridable method for extracting the page content data from the
 645          * posted form to be placed in $this->textbox1, if using customized input
 646          * this method should be overrided and return the page text that will be used
 647          * for saving, preview parsing and so on...
 648          *
 649          * @param $request WebRequest
 650          */
 651         protected function importContentFormData( &$request ) {
 652                 return; // Don't do anything, EditPage already extracted wpTextbox1
 653         }
 654
 655         /**
 656          * Initialise form fields in the object
 657          * Called on the first invocation, e.g. when a user clicks an edit link
 658          * @return bool -- if the requested section is valid
 659          */
 660         function initialiseForm() {
 661                 global $wgUser;
 662                 $this->edittime = $this->mArticle->getTimestamp();
 663                 $this->textbox1 = $this->getContent( false );
 664                 // activate checkboxes if user wants them to be always active
 665                 # Sort out the "watch" checkbox
 666                 if ( $wgUser->getOption( 'watchdefault' ) ) {
 667                         # Watch all edits
 668                         $this->watchthis = true;
 669                 } elseif ( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
 670                         # Watch creations
 671                         $this->watchthis = true;
 672                 } elseif ( $this->mTitle->userIsWatching() ) {
 673                         # Already watched
 674                         $this->watchthis = true;
 675                 }
 676                 if ( $wgUser->getOption( 'minordefault' ) && !$this->isNew ) {
 677                         $this->minoredit = true;
 678                 }
 679                 if ( $this->textbox1 === false ) {
 680                         return false;
 681                 }
 682                 wfProxyCheck();
 683                 return true;
 684         }
 685
 686         /**
 687          * Fetch initial editing page content.
 688          *
 689          * @param $def_text string
 690          * @return mixed string on success, $def_text for invalid sections
 691          * @private
 692          */
 693         function getContent( $def_text = '' ) {
 694                 global $wgOut, $wgRequest, $wgParser;
 695
 696                 wfProfileIn( __METHOD__ );
 697                 # Get variables from query string :P
 698                 $section = $wgRequest->getVal( 'section' );
 699
 700                 $preload = $wgRequest->getVal( 'preload',
 701                         // Custom preload text for new sections
 702                         $section === 'new' ? 'MediaWiki:addsection-preload' : '' );
 703                 $undoafter = $wgRequest->getVal( 'undoafter' );
 704                 $undo = $wgRequest->getVal( 'undo' );
 705
 706                 // For message page not locally set, use the i18n message.
 707                 // For other non-existent articles, use preload text if any.
 708                 if ( !$this->mTitle->exists() ) {
 709                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
 710                                 # If this is a system message, get the default text.
 711                                 $text = $this->mTitle->getDefaultMessageText();
 712                                 if( $text === false ) {
 713                                         $text = $this->getPreloadedText( $preload );
 714                                 }
 715                         } else {
 716                                 # If requested, preload some text.
 717                                 $text = $this->getPreloadedText( $preload );
 718                         }
 719                 // For existing pages, get text based on "undo" or section parameters.
 720                 } else {
 721                         $text = $this->mArticle->getContent();
 722                         if ( $undo > 0 && $undoafter > 0 && $undo < $undoafter ) {
 723                                 # If they got undoafter and undo round the wrong way, switch them
 724                                 list( $undo, $undoafter ) = array( $undoafter, $undo );
 725                         }
 726                         if ( $undo > 0 && $undo > $undoafter ) {
 727                                 # Undoing a specific edit overrides section editing; section-editing
 728                                 # doesn't work with undoing.
 729                                 if ( $undoafter ) {
 730                                         $undorev = Revision::newFromId( $undo );
 731                                         $oldrev = Revision::newFromId( $undoafter );
 732                                 } else {
 733                                         $undorev = Revision::newFromId( $undo );
 734                                         $oldrev = $undorev ? $undorev->getPrevious() : null;
 735                                 }
 736
 737                                 # Sanity check, make sure it's the right page,
 738                                 # the revisions exist and they were not deleted.
 739                                 # Otherwise, $text will be left as-is.
 740                                 if ( !is_null( $undorev ) && !is_null( $oldrev ) &&
 741                                         $undorev->getPage() == $oldrev->getPage() &&
 742                                         $undorev->getPage() == $this->mTitle->getArticleId() &&
 743                                         !$undorev->isDeleted( Revision::DELETED_TEXT ) &&
 744                                         !$oldrev->isDeleted( Revision::DELETED_TEXT ) ) {
 745
 746                                         $undotext = $this->mArticle->getUndoText( $undorev, $oldrev );
 747                                         if ( $undotext === false ) {
 748                                                 # Warn the user that something went wrong
 749                                                 $this->editFormPageTop .= $wgOut->parse( '<div class="error mw-undo-failure">' .
 750                                                         wfMsgNoTrans( 'undo-failure' ) . '</div>', true, /* interface */true );
 751                                         } else {
 752                                                 $text = $undotext;
 753                                                 # Inform the user of our success and set an automatic edit summary
 754                                                 $this->editFormPageTop .= $wgOut->parse( '<div class="mw-undo-success">' .
 755                                                         wfMsgNoTrans( 'undo-success' ) . '</div>', true, /* interface */true );
 756                                                 $firstrev = $oldrev->getNext();
 757                                                 # If we just undid one rev, use an autosummary
 758                                                 if ( $firstrev->getId() == $undo ) {
 759                                                         $undoSummary = wfMsgForContent( 'undo-summary', $undo, $undorev->getUserText() );
 760                                                         if ( $this->summary === '' ) {
 761                                                                 $this->summary = $undoSummary;
 762                                                         } else {
 763                                                                 $this->summary = $undoSummary . wfMsgForContent( 'colon-separator' ) . $this->summary;
 764                                                         }
 765                                                         $this->undidRev = $undo;
 766                                                 }
 767                                                 $this->formtype = 'diff';
 768                                         }
 769                                 } else {
 770                                         // Failed basic sanity checks.
 771                                         // Older revisions may have been removed since the link
 772                                         // was created, or we may simply have got bogus input.
 773                                         $this->editFormPageTop .= $wgOut->parse( '<div class="error mw-undo-norev">' .
 774                                                 wfMsgNoTrans( 'undo-norev' ) . '</div>', true, /* interface */true );
 775                                 }
 776                         } elseif ( $section != '' ) {
 777                                 if ( $section == 'new' ) {
 778                                         $text = $this->getPreloadedText( $preload );
 779                                 } else {
 780                                         // Get section edit text (returns $def_text for invalid sections)
 781                                         $text = $wgParser->getSection( $text, $section, $def_text );
 782                                 }
 783                         }
 784                 }
 785
 786                 wfProfileOut( __METHOD__ );
 787                 return $text;
 788         }
 789
 790         /**
 791          * Use this method before edit() to preload some text into the edit box
 792          *
 793          * @param $text string
 794          */
 795         public function setPreloadedText( $text ) {
 796                 $this->mPreloadText = $text;
 797         }
 798
 799         /**
 800          * Get the contents to be preloaded into the box, either set by
 801          * an earlier setPreloadText() or by loading the given page.
 802          *
 803          * @param $preload String: representing the title to preload from.
 804          * @return String
 805          */
 806         protected function getPreloadedText( $preload ) {
 807                 global $wgUser, $wgParser;
 808
 809                 if ( !empty( $this->mPreloadText ) ) {
 810                         return $this->mPreloadText;
 811                 }
 812
 813                 if ( $preload === '' ) {
 814                         return '';
 815                 }
 816
 817                 $title = Title::newFromText( $preload );
 818                 # Check for existence to avoid getting MediaWiki:Noarticletext
 819                 if ( $title === null || !$title->exists() || !$title->userCan( 'read' ) ) {
 820                         return '';
 821                 }
 822
 823                 $page = WikiPage::factory( $title );
 824                 if ( $page->isRedirect() ) {
 825                         $title = $page->getRedirectTarget();
 826                         # Same as before
 827                         if ( $title === null || !$title->exists() || !$title->userCan( 'read' ) ) {
 828                                 return '';
 829                         }
 830                         $page = WikiPage::factory( $title );
 831                 }
 832
 833                 $parserOptions = ParserOptions::newFromUser( $wgUser );
 834                 return $wgParser->getPreloadText( $page->getRawText(), $title, $parserOptions );
 835         }
 836
 837         /**
 838          * Make sure the form isn't faking a user's credentials.
 839          *
 840          * @param $request WebRequest
 841          * @return bool
 842          * @private
 843          */
 844         function tokenOk( &$request ) {
 845                 global $wgUser;
 846                 $token = $request->getVal( 'wpEditToken' );
 847                 $this->mTokenOk = $wgUser->matchEditToken( $token );
 848                 $this->mTokenOkExceptSuffix = $wgUser->matchEditTokenNoSuffix( $token );
 849                 return $this->mTokenOk;
 850         }
 851
 852         /**
 853          * Attempt submission
 854          * @return bool false if output is done, true if the rest of the form should be displayed
 855          */
 856         function attemptSave() {
 857                 global $wgUser, $wgOut;
 858
 859                 $resultDetails = false;
 860                 # Allow bots to exempt some edits from bot flagging
 861                 $bot = $wgUser->isAllowed( 'bot' ) && $this->bot;
 862                 $status = $this->internalAttemptSave( $resultDetails, $bot );
 863                 // FIXME: once the interface for internalAttemptSave() is made nicer, this should use the message in $status
 864
 865                 if ( $status->value == self::AS_SUCCESS_UPDATE || $status->value == self::AS_SUCCESS_NEW_ARTICLE ) {
 866                         $this->didSave = true;
 867                 }
 868
 869                 switch ( $status->value ) {
 870                         case self::AS_HOOK_ERROR_EXPECTED:
 871                         case self::AS_CONTENT_TOO_BIG:
 872                         case self::AS_ARTICLE_WAS_DELETED:
 873                         case self::AS_CONFLICT_DETECTED:
 874                         case self::AS_SUMMARY_NEEDED:
 875                         case self::AS_TEXTBOX_EMPTY:
 876                         case self::AS_MAX_ARTICLE_SIZE_EXCEEDED:
 877                         case self::AS_END:
 878                                 return true;
 879
 880                         case self::AS_HOOK_ERROR:
 881                         case self::AS_FILTERING:
 882                                 return false;
 883
 884                         case self::AS_SUCCESS_NEW_ARTICLE:
 885                                 $query = $resultDetails['redirect'] ? 'redirect=no' : '';
 886                                 $anchor = isset ( $resultDetails['sectionanchor'] ) ? $resultDetails['sectionanchor'] : '';
 887                                 $wgOut->redirect( $this->mTitle->getFullURL( $query ) . $anchor );
 888                                 return false;
 889
 890                         case self::AS_SUCCESS_UPDATE:
 891                                 $extraQuery = '';
 892                                 $sectionanchor = $resultDetails['sectionanchor'];
 893
 894                                 // Give extensions a chance to modify URL query on update
 895                                 wfRunHooks( 'ArticleUpdateBeforeRedirect', array( $this->mArticle, &$sectionanchor, &$extraQuery ) );
 896
 897                                 if ( $resultDetails['redirect'] ) {
 898                                         if ( $extraQuery == '' ) {
 899                                                 $extraQuery = 'redirect=no';
 900                                         } else {
 901                                                 $extraQuery = 'redirect=no&' . $extraQuery;
 902                                         }
 903                                 }
 904                                 $wgOut->redirect( $this->mTitle->getFullURL( $extraQuery ) . $sectionanchor );
 905                                 return false;
 906
 907                         case self::AS_BLANK_ARTICLE:
 908                                 $wgOut->redirect( $this->getContextTitle()->getFullURL() );
 909                                 return false;
 910
 911                         case self::AS_SPAM_ERROR:
 912                                 $this->spamPageWithContent( $resultDetails['spam'] );
 913                                 return false;
 914
 915                         case self::AS_BLOCKED_PAGE_FOR_USER:
 916                                 throw new UserBlockedError( $wgUser->mBlock );
 917
 918                         case self::AS_IMAGE_REDIRECT_ANON:
 919                         case self::AS_IMAGE_REDIRECT_LOGGED:
 920                                 throw new PermissionsError( 'upload' );
 921
 922                         case self::AS_READ_ONLY_PAGE_ANON:
 923                         case self::AS_READ_ONLY_PAGE_LOGGED:
 924                                 throw new PermissionsError( 'edit' );
 925
 926                         case self::AS_READ_ONLY_PAGE:
 927                                 throw new ReadOnlyError;
 928
 929                         case self::AS_RATE_LIMITED:
 930                                 throw new ThrottledError();
 931
 932                         case self::AS_NO_CREATE_PERMISSION:
 933                                 $permission = $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage';
 934                                 throw new PermissionsError( $permission );
 935
 936                 }
 937                 return false;
 938         }
 939
 940         /**
 941          * Attempt submission (no UI)
 942          *
 943          * @param $result
 944          * @param $bot bool
 945          *
 946          * @return Status object, possibly with a message, but always with one of the AS_* constants in $status->value,
 947          *
 948          * FIXME: This interface is TERRIBLE, but hard to get rid of due to various error display idiosyncrasies. There are
 949          * also lots of cases where error metadata is set in the object and retrieved later instead of being returned, e.g.
 950          * AS_CONTENT_TOO_BIG and AS_BLOCKED_PAGE_FOR_USER. All that stuff needs to be cleaned up some time.
 951          */
 952         function internalAttemptSave( &$result, $bot = false ) {
 953                 global $wgFilterCallback, $wgUser, $wgRequest, $wgParser;
 954                 global $wgMaxArticleSize;
 955
 956                 $status = Status::newGood();
 957
 958                 wfProfileIn( __METHOD__  );
 959                 wfProfileIn( __METHOD__ . '-checks' );
 960
 961                 if ( !wfRunHooks( 'EditPage::attemptSave', array( $this ) ) ) {
 962                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving\n" );
 963                         $status->fatal( 'hookaborted' );
 964                         $status->value = self::AS_HOOK_ERROR;
 965                         wfProfileOut( __METHOD__ . '-checks' );
 966                         wfProfileOut( __METHOD__  );
 967                         return $status;
 968                 }
 969
 970                 # Check image redirect
 971                 if ( $this->mTitle->getNamespace() == NS_FILE &&
 972                         Title::newFromRedirect( $this->textbox1 ) instanceof Title &&
 973                         !$wgUser->isAllowed( 'upload' ) ) {
 974                                 $code = $wgUser->isAnon() ? self::AS_IMAGE_REDIRECT_ANON : self::AS_IMAGE_REDIRECT_LOGGED;
 975                                 $status->setResult( false, $code );
 976
 977                                 wfProfileOut( __METHOD__ . '-checks' );
 978                                 wfProfileOut( __METHOD__  );
 979
 980                                 return $status;
 981                 }
 982
 983                 # Check for spam
 984                 $match = self::matchSummarySpamRegex( $this->summary );
 985                 if ( $match === false ) {
 986                         $match = self::matchSpamRegex( $this->textbox1 );
 987                 }
 988                 if ( $match !== false ) {
 989                         $result['spam'] = $match;
 990                         $ip = $wgRequest->getIP();
 991                         $pdbk = $this->mTitle->getPrefixedDBkey();
 992                         $match = str_replace( "\n", '', $match );
 993                         wfDebugLog( 'SpamRegex', "$ip spam regex hit [[$pdbk]]: \"$match\"" );
 994                         $status->fatal( 'spamprotectionmatch', $match );
 995                         $status->value = self::AS_SPAM_ERROR;
 996                         wfProfileOut( __METHOD__ . '-checks' );
 997                         wfProfileOut( __METHOD__ );
 998                         return $status;
 999                 }
1000                 if ( $wgFilterCallback && is_callable( $wgFilterCallback ) && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section, $this->hookError, $this->summary ) ) {
1001                         # Error messages or other handling should be performed by the filter function
1002                         $status->setResult( false, self::AS_FILTERING );
1003                         wfProfileOut( __METHOD__ . '-checks' );
1004                         wfProfileOut( __METHOD__ );
1005                         return $status;
1006                 }
1007                 if ( !wfRunHooks( 'EditFilter', array( $this, $this->textbox1, $this->section, &$this->hookError, $this->summary ) ) ) {
1008                         # Error messages etc. could be handled within the hook...
1009                         $status->fatal( 'hookaborted' );
1010                         $status->value = self::AS_HOOK_ERROR;
1011                         wfProfileOut( __METHOD__ . '-checks' );
1012                         wfProfileOut( __METHOD__ );
1013                         return $status;
1014                 } elseif ( $this->hookError != '' ) {
1015                         # ...or the hook could be expecting us to produce an error
1016                         $status->fatal( 'hookaborted' );
1017                         $status->value = self::AS_HOOK_ERROR_EXPECTED;
1018                         wfProfileOut( __METHOD__ . '-checks' );
1019                         wfProfileOut( __METHOD__ );
1020                         return $status;
1021                 }
1022
1023                 if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
1024                         // Auto-block user's IP if the account was "hard" blocked
1025                         $wgUser->spreadAnyEditBlock();
1026                         # Check block state against master, thus 'false'.
1027                         $status->setResult( false, self::AS_BLOCKED_PAGE_FOR_USER );
1028                         wfProfileOut( __METHOD__ . '-checks' );
1029                         wfProfileOut( __METHOD__ );
1030                         return $status;
1031                 }
1032
1033                 $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
1034                 if ( $this->kblength > $wgMaxArticleSize ) {
1035                         // Error will be displayed by showEditForm()
1036                         $this->tooBig = true;
1037                         $status->setResult( false, self::AS_CONTENT_TOO_BIG );
1038                         wfProfileOut( __METHOD__ . '-checks' );
1039                         wfProfileOut( __METHOD__ );
1040                         return $status;
1041                 }
1042
1043                 if ( !$wgUser->isAllowed( 'edit' ) ) {
1044                         if ( $wgUser->isAnon() ) {
1045                                 $status->setResult( false, self::AS_READ_ONLY_PAGE_ANON );
1046                                 wfProfileOut( __METHOD__ . '-checks' );
1047                                 wfProfileOut( __METHOD__ );
1048                                 return $status;
1049                         } else {
1050                                 $status->fatal( 'readonlytext' );
1051                                 $status->value = self::AS_READ_ONLY_PAGE_LOGGED;
1052                                 wfProfileOut( __METHOD__ . '-checks' );
1053                                 wfProfileOut( __METHOD__ );
1054                                 return $status;
1055                         }
1056                 }
1057
1058                 if ( wfReadOnly() ) {
1059                         $status->fatal( 'readonlytext' );
1060                         $status->value = self::AS_READ_ONLY_PAGE;
1061                         wfProfileOut( __METHOD__ . '-checks' );
1062                         wfProfileOut( __METHOD__ );
1063                         return $status;
1064                 }
1065                 if ( $wgUser->pingLimiter() ) {
1066                         $status->fatal( 'actionthrottledtext' );
1067                         $status->value = self::AS_RATE_LIMITED;
1068                         wfProfileOut( __METHOD__ . '-checks' );
1069                         wfProfileOut( __METHOD__ );
1070                         return $status;
1071                 }
1072
1073                 # If the article has been deleted while editing, don't save it without
1074                 # confirmation
1075                 if ( $this->wasDeletedSinceLastEdit() && !$this->recreate ) {
1076                         $status->setResult( false, self::AS_ARTICLE_WAS_DELETED );
1077                         wfProfileOut( __METHOD__ . '-checks' );
1078                         wfProfileOut( __METHOD__ );
1079                         return $status;
1080                 }
1081
1082                 wfProfileOut( __METHOD__ . '-checks' );
1083
1084                 # If article is new, insert it.
1085                 $aid = $this->mTitle->getArticleID( Title::GAID_FOR_UPDATE );
1086                 $new = ( $aid == 0 );
1087
1088                 if ( $new ) {
1089                         // Late check for create permission, just in case *PARANOIA*
1090                         if ( !$this->mTitle->userCan( 'create' ) ) {
1091                                 $status->fatal( 'nocreatetext' );
1092                                 $status->value = self::AS_NO_CREATE_PERMISSION;
1093                                 wfDebug( __METHOD__ . ": no create permission\n" );
1094                                 wfProfileOut( __METHOD__ );
1095                                 return $status;
1096                         }
1097
1098                         # Don't save a new article if it's blank.
1099                         if ( $this->textbox1 == '' ) {
1100                                 $status->setResult( false, self::AS_BLANK_ARTICLE );
1101                                 wfProfileOut( __METHOD__ );
1102                                 return $status;
1103                         }
1104
1105                         // Run post-section-merge edit filter
1106                         if ( !wfRunHooks( 'EditFilterMerged', array( $this, $this->textbox1, &$this->hookError, $this->summary ) ) ) {
1107                                 # Error messages etc. could be handled within the hook...
1108                                 $status->fatal( 'hookaborted' );
1109                                 $status->value = self::AS_HOOK_ERROR;
1110                                 wfProfileOut( __METHOD__ );
1111                                 return $status;
1112                         } elseif ( $this->hookError != '' ) {
1113                                 # ...or the hook could be expecting us to produce an error
1114                                 $status->fatal( 'hookaborted' );
1115                                 $status->value = self::AS_HOOK_ERROR_EXPECTED;
1116                                 wfProfileOut( __METHOD__ );
1117                                 return $status;
1118                         }
1119
1120                         # Handle the user preference to force summaries here. Check if it's not a redirect.
1121                         if ( !$this->allowBlankSummary && !Title::newFromRedirect( $this->textbox1 ) ) {
1122                                 if ( md5( $this->summary ) == $this->autoSumm ) {
1123                                         $this->missingSummary = true;
1124                                         $status->fatal( 'missingsummary' ); // or 'missingcommentheader' if $section == 'new'. Blegh
1125                                         $status->value = self::AS_SUMMARY_NEEDED;
1126                                         wfProfileOut( __METHOD__ );
1127                                         return $status;
1128                                 }
1129                         }
1130
1131                         $text = $this->textbox1;
1132                         $result['sectionanchor'] = '';
1133                         if ( $this->section == 'new' ) {
1134                                 if ( $this->sectiontitle !== '' ) {
1135                                         // Insert the section title above the content.
1136                                         $text = wfMsgForContent( 'newsectionheaderdefaultlevel', $this->sectiontitle ) . "\n\n" . $text;
1137
1138                                         // Jump to the new section
1139                                         $result['sectionanchor'] = $wgParser->guessLegacySectionNameFromWikiText( $this->sectiontitle );
1140
1141                                         // If no edit summary was specified, create one automatically from the section
1142                                         // title and have it link to the new section. Otherwise, respect the summary as
1143                                         // passed.
1144                                         if ( $this->summary === '' ) {
1145                                                 $cleanSectionTitle = $wgParser->stripSectionName( $this->sectiontitle );
1146                                                 $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSectionTitle );
1147                                         }
1148                                 } elseif ( $this->summary !== '' ) {
1149                                         // Insert the section title above the content.
1150                                         $text = wfMsgForContent( 'newsectionheaderdefaultlevel', $this->summary ) . "\n\n" . $text;
1151
1152                                         // Jump to the new section
1153                                         $result['sectionanchor'] = $wgParser->guessLegacySectionNameFromWikiText( $this->summary );
1154
1155                                         // Create a link to the new section from the edit summary.
1156                                         $cleanSummary = $wgParser->stripSectionName( $this->summary );
1157                                         $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
1158                                 }
1159                         }
1160
1161                         $status->value = self::AS_SUCCESS_NEW_ARTICLE;
1162
1163                 } else {
1164
1165                         # Article exists. Check for edit conflict.
1166
1167                         $this->mArticle->clear(); # Force reload of dates, etc.
1168                         $timestamp = $this->mArticle->getTimestamp();
1169
1170                         wfDebug( "timestamp: {$timestamp}, edittime: {$this->edittime}\n" );
1171
1172                         if ( $timestamp != $this->edittime ) {
1173                                 $this->isConflict = true;
1174                                 if ( $this->section == 'new' ) {
1175                                         if ( $this->mArticle->getUserText() == $wgUser->getName() &&
1176                                                 $this->mArticle->getComment() == $this->summary ) {
1177                                                 // Probably a duplicate submission of a new comment.
1178                                                 // This can happen when squid resends a request after
1179                                                 // a timeout but the first one actually went through.
1180                                                 wfDebug( __METHOD__ . ": duplicate new section submission; trigger edit conflict!\n" );
1181                                         } else {
1182                                                 // New comment; suppress conflict.
1183                                                 $this->isConflict = false;
1184                                                 wfDebug( __METHOD__ .": conflict suppressed; new section\n" );
1185                                         }
1186                                 } elseif ( $this->section == '' && $this->userWasLastToEdit( $wgUser->getId(), $this->edittime ) ) {
1187                                         # Suppress edit conflict with self, except for section edits where merging is required.
1188                                         wfDebug( __METHOD__ . ": Suppressing edit conflict, same user.\n" );
1189                                         $this->isConflict = false;
1190                                 }
1191                         }
1192
1193                         // If sectiontitle is set, use it, otherwise use the summary as the section title (for
1194                         // backwards compatibility with old forms/bots).
1195                         if ( $this->sectiontitle !== '' ) {
1196                                 $sectionTitle = $this->sectiontitle;
1197                         } else {
1198                                 $sectionTitle = $this->summary;
1199                         }
1200
1201                         if ( $this->isConflict ) {
1202                                 wfDebug( __METHOD__ . ": conflict! getting section '$this->section' for time '$this->edittime' (article time '{$timestamp}')\n" );
1203                                 $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $sectionTitle, $this->edittime );
1204                         } else {
1205                                 wfDebug( __METHOD__ . ": getting section '$this->section'\n" );
1206                                 $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $sectionTitle );
1207                         }
1208                         if ( is_null( $text ) ) {
1209                                 wfDebug( __METHOD__ . ": activating conflict; section replace failed.\n" );
1210                                 $this->isConflict = true;
1211                                 $text = $this->textbox1; // do not try to merge here!
1212                         } elseif ( $this->isConflict ) {
1213                                 # Attempt merge
1214                                 if ( $this->mergeChangesInto( $text ) ) {
1215                                         // Successful merge! Maybe we should tell the user the good news?
1216                                         $this->isConflict = false;
1217                                         wfDebug( __METHOD__ . ": Suppressing edit conflict, successful merge.\n" );
1218                                 } else {
1219                                         $this->section = '';
1220                                         $this->textbox1 = $text;
1221                                         wfDebug( __METHOD__ . ": Keeping edit conflict, failed merge.\n" );
1222                                 }
1223                         }
1224
1225                         if ( $this->isConflict ) {
1226                                 $status->setResult( false, self::AS_CONFLICT_DETECTED );
1227                                 wfProfileOut( __METHOD__ );
1228                                 return $status;
1229                         }
1230
1231                         // Run post-section-merge edit filter
1232                         if ( !wfRunHooks( 'EditFilterMerged', array( $this, $text, &$this->hookError, $this->summary ) ) ) {
1233                                 # Error messages etc. could be handled within the hook...
1234                                 $status->fatal( 'hookaborted' );
1235                                 $status->value = self::AS_HOOK_ERROR;
1236                                 wfProfileOut( __METHOD__ );
1237                                 return $status;
1238                         } elseif ( $this->hookError != '' ) {
1239                                 # ...or the hook could be expecting us to produce an error
1240                                 $status->fatal( 'hookaborted' );
1241                                 $status->value = self::AS_HOOK_ERROR_EXPECTED;
1242                                 wfProfileOut( __METHOD__ );
1243                                 return $status;
1244                         }
1245
1246                         # Handle the user preference to force summaries here, but not for null edits
1247                         if ( $this->section != 'new' && !$this->allowBlankSummary
1248                                 && 0 != strcmp( $this->mArticle->getContent(), $text )
1249                                 && !Title::newFromRedirect( $text ) ) # check if it's not a redirect
1250                         {
1251                                 if ( md5( $this->summary ) == $this->autoSumm ) {
1252                                         $this->missingSummary = true;
1253                                         $status->fatal( 'missingsummary' );
1254                                         $status->value = self::AS_SUMMARY_NEEDED;
1255                                         wfProfileOut( __METHOD__ );
1256                                         return $status;
1257                                 }
1258                         }
1259
1260                         # And a similar thing for new sections
1261                         if ( $this->section == 'new' && !$this->allowBlankSummary ) {
1262                                 if ( trim( $this->summary ) == '' ) {
1263                                         $this->missingSummary = true;
1264                                         $status->fatal( 'missingsummary' ); // or 'missingcommentheader' if $section == 'new'. Blegh
1265                                         $status->value = self::AS_SUMMARY_NEEDED;
1266                                         wfProfileOut( __METHOD__ );
1267                                         return $status;
1268                                 }
1269                         }
1270
1271                         # All's well
1272                         wfProfileIn( __METHOD__ . '-sectionanchor' );
1273                         $sectionanchor = '';
1274                         if ( $this->section == 'new' ) {
1275                                 if ( $this->textbox1 == '' ) {
1276                                         $this->missingComment = true;
1277                                         $status->fatal( 'missingcommenttext' );
1278                                         $status->value = self::AS_TEXTBOX_EMPTY;
1279                                         wfProfileOut( __METHOD__ . '-sectionanchor' );
1280                                         wfProfileOut( __METHOD__ );
1281                                         return $status;
1282                                 }
1283                                 if ( $this->sectiontitle !== '' ) {
1284                                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $this->sectiontitle );
1285                                         // If no edit summary was specified, create one automatically from the section
1286                                         // title and have it link to the new section. Otherwise, respect the summary as
1287                                         // passed.
1288                                         if ( $this->summary === '' ) {
1289                                                 $cleanSectionTitle = $wgParser->stripSectionName( $this->sectiontitle );
1290                                                 $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSectionTitle );
1291                                         }
1292                                 } elseif ( $this->summary !== '' ) {
1293                                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $this->summary );
1294                                         # This is a new section, so create a link to the new section
1295                                         # in the revision summary.
1296                                         $cleanSummary = $wgParser->stripSectionName( $this->summary );
1297                                         $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
1298                                 }
1299                         } elseif ( $this->section != '' ) {
1300                                 # Try to get a section anchor from the section source, redirect to edited section if header found
1301                                 # XXX: might be better to integrate this into Article::replaceSection
1302                                 # for duplicate heading checking and maybe parsing
1303                                 $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
1304                                 # we can't deal with anchors, includes, html etc in the header for now,
1305                                 # headline would need to be parsed to improve this
1306                                 if ( $hasmatch && strlen( $matches[2] ) > 0 ) {
1307                                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $matches[2] );
1308                                 }
1309                         }
1310                         $result['sectionanchor'] = $sectionanchor;
1311                         wfProfileOut( __METHOD__ . '-sectionanchor' );
1312
1313                         // Save errors may fall down to the edit form, but we've now
1314                         // merged the section into full text. Clear the section field
1315                         // so that later submission of conflict forms won't try to
1316                         // replace that into a duplicated mess.
1317                         $this->textbox1 = $text;
1318                         $this->section = '';
1319
1320                         $status->value = self::AS_SUCCESS_UPDATE;
1321                 }
1322
1323                 // Check for length errors again now that the section is merged in
1324                 $this->kblength = (int)( strlen( $text ) / 1024 );
1325                 if ( $this->kblength > $wgMaxArticleSize ) {
1326                         $this->tooBig = true;
1327                         $status->setResult( false, self::AS_MAX_ARTICLE_SIZE_EXCEEDED );
1328                         wfProfileOut( __METHOD__ );
1329                         return $status;
1330                 }
1331
1332                 $flags = EDIT_DEFER_UPDATES | EDIT_AUTOSUMMARY |
1333                         ( $new ? EDIT_NEW : EDIT_UPDATE ) |
1334                         ( ( $this->minoredit && !$this->isNew ) ? EDIT_MINOR : 0 ) |
1335                         ( $bot ? EDIT_FORCE_BOT : 0 );
1336
1337                 $doEditStatus = $this->mArticle->doEdit( $text, $this->summary, $flags );
1338
1339                 if ( $doEditStatus->isOK() ) {
1340                         $result['redirect'] = Title::newFromRedirect( $text ) !== null;
1341                         $this->commitWatch();
1342                         wfProfileOut( __METHOD__ );
1343                         return $status;
1344                 } else {
1345                         $this->isConflict = true;
1346                         $doEditStatus->value = self::AS_END; // Destroys data doEdit() put in $status->value but who cares
1347                         wfProfileOut( __METHOD__ );
1348                         return $doEditStatus;
1349                 }
1350         }
1351
1352         /**
1353          * Commit the change of watch status
1354          */
1355         protected function commitWatch() {
1356                 global $wgUser;
1357                 if ( $this->watchthis xor $this->mTitle->userIsWatching() ) {
1358                         $dbw = wfGetDB( DB_MASTER );
1359                         $dbw->begin();
1360                         if ( $this->watchthis ) {
1361                                 WatchAction::doWatch( $this->mTitle, $wgUser );
1362                         } else {
1363                                 WatchAction::doUnwatch( $this->mTitle, $wgUser );
1364                         }
1365                         $dbw->commit();
1366                 }
1367         }
1368
1369         /**
1370          * Check if no edits were made by other users since
1371          * the time a user started editing the page. Limit to
1372          * 50 revisions for the sake of performance.
1373          *
1374          * @param $id int
1375          * @param $edittime string
1376          *
1377          * @return bool
1378          */
1379         protected function userWasLastToEdit( $id, $edittime ) {
1380                 if( !$id ) return false;
1381                 $dbw = wfGetDB( DB_MASTER );
1382                 $res = $dbw->select( 'revision',
1383                         'rev_user',
1384                         array(
1385                                 'rev_page' => $this->mTitle->getArticleId(),
1386                                 'rev_timestamp > '.$dbw->addQuotes( $dbw->timestamp($edittime) )
1387                         ),
1388                         __METHOD__,
1389                         array( 'ORDER BY' => 'rev_timestamp ASC', 'LIMIT' => 50 ) );
1390                 foreach ( $res as $row ) {
1391                         if( $row->rev_user != $id ) {
1392                                 return false;
1393                         }
1394                 }
1395                 return true;
1396         }
1397
1398         /**
1399          * @private
1400          * @todo document
1401          *
1402          * @parma $editText string
1403          *
1404          * @return bool
1405          */
1406         function mergeChangesInto( &$editText ){
1407                 wfProfileIn( __METHOD__ );
1408
1409                 $db = wfGetDB( DB_MASTER );
1410
1411                 // This is the revision the editor started from
1412                 $baseRevision = $this->getBaseRevision();
1413                 if ( is_null( $baseRevision ) ) {
1414                         wfProfileOut( __METHOD__ );
1415                         return false;
1416                 }
1417                 $baseText = $baseRevision->getText();
1418
1419                 // The current state, we want to merge updates into it
1420                 $currentRevision = Revision::loadFromTitle( $db, $this->mTitle );
1421                 if ( is_null( $currentRevision ) ) {
1422                         wfProfileOut( __METHOD__ );
1423                         return false;
1424                 }
1425                 $currentText = $currentRevision->getText();
1426
1427                 $result = '';
1428                 if ( wfMerge( $baseText, $editText, $currentText, $result ) ) {
1429                         $editText = $result;
1430                         wfProfileOut( __METHOD__ );
1431                         return true;
1432                 } else {
1433                         wfProfileOut( __METHOD__ );
1434                         return false;
1435                 }
1436         }
1437
1438         /**
1439          * @return Revision
1440          */
1441         function getBaseRevision() {
1442                 if ( !$this->mBaseRevision ) {
1443                         $db = wfGetDB( DB_MASTER );
1444                         $baseRevision = Revision::loadFromTimestamp(
1445                                 $db, $this->mTitle, $this->edittime );
1446                         return $this->mBaseRevision = $baseRevision;
1447                 } else {
1448                         return $this->mBaseRevision;
1449                 }
1450         }
1451
1452         /**
1453          * Check given input text against $wgSpamRegex, and return the text of the first match.
1454          *
1455          * @param $text string
1456          *
1457          * @return string|false matching string or false
1458          */
1459         public static function matchSpamRegex( $text ) {
1460                 global $wgSpamRegex;
1461                 // For back compatibility, $wgSpamRegex may be a single string or an array of regexes.
1462                 $regexes = (array)$wgSpamRegex;
1463                 return self::matchSpamRegexInternal( $text, $regexes );
1464         }
1465
1466         /**
1467          * Check given input text against $wgSpamRegex, and return the text of the first match.
1468          *
1469          * @parma $text string
1470          *
1471          * @return string|false  matching string or false
1472          */
1473         public static function matchSummarySpamRegex( $text ) {
1474                 global $wgSummarySpamRegex;
1475                 $regexes = (array)$wgSummarySpamRegex;
1476                 return self::matchSpamRegexInternal( $text, $regexes );
1477         }
1478
1479         /**
1480          * @param $text string
1481          * @param $regexes array
1482          * @return bool|string
1483          */
1484         protected static function matchSpamRegexInternal( $text, $regexes ) {
1485                 foreach( $regexes as $regex ) {
1486                         $matches = array();
1487                         if( preg_match( $regex, $text, $matches ) ) {
1488                                 return $matches[0];
1489                         }
1490                 }
1491                 return false;
1492         }
1493
1494         function setHeaders() {
1495                 global $wgOut;
1496                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1497                 if ( $this->isConflict ) {
1498                         $wgOut->setPageTitle( wfMessage( 'editconflict', $this->getContextTitle()->getPrefixedText() ) );
1499                 } elseif ( $this->section != '' ) {
1500                         $msg = $this->section == 'new' ? 'editingcomment' : 'editingsection';
1501                         $wgOut->setPageTitle( wfMessage( $msg, $this->getContextTitle()->getPrefixedText() ) );
1502                 } else {
1503                         # Use the title defined by DISPLAYTITLE magic word when present
1504                         if ( isset( $this->mParserOutput )
1505                          && ( $dt = $this->mParserOutput->getDisplayTitle() ) !== false ) {
1506                                 $title = $dt;
1507                         } else {
1508                                 $title = $this->getContextTitle()->getPrefixedText();
1509                         }
1510                         $wgOut->setPageTitle( wfMessage( 'editing', $title ) );
1511                 }
1512         }
1513
1514         /**
1515          * Show all applicable editing introductions
1516          */
1517         protected function showIntro() {
1518                 global $wgOut, $wgUser;
1519                 if ( $this->suppressIntro ) {
1520                         return;
1521                 }
1522
1523                 $namespace = $this->mTitle->getNamespace();
1524
1525                 if ( $namespace == NS_MEDIAWIKI ) {
1526                         # Show a warning if editing an interface message
1527                         $wgOut->wrapWikiMsg( "<div class='mw-editinginterface'>\n$1\n</div>", 'editinginterface' );
1528                 }
1529
1530                 # Show a warning message when someone creates/edits a user (talk) page but the user does not exist
1531                 # Show log extract when the user is currently blocked
1532                 if ( $namespace == NS_USER || $namespace == NS_USER_TALK ) {
1533                         $parts = explode( '/', $this->mTitle->getText(), 2 );
1534                         $username = $parts[0];
1535                         $user = User::newFromName( $username, false /* allow IP users*/ );
1536                         $ip = User::isIP( $username );
1537                         if ( !($user && $user->isLoggedIn()) && !$ip ) { # User does not exist
1538                                 $wgOut->wrapWikiMsg( "<div class=\"mw-userpage-userdoesnotexist error\">\n$1\n</div>",
1539                                         array( 'userpage-userdoesnotexist', wfEscapeWikiText( $username ) ) );
1540                         } elseif ( $user->isBlocked() ) { # Show log extract if the user is currently blocked
1541                                 LogEventsList::showLogExtract(
1542                                         $wgOut,
1543                                         'block',
1544                                         $user->getUserPage(),
1545                                         '',
1546                                         array(
1547                                                 'lim' => 1,
1548                                                 'showIfEmpty' => false,
1549                                                 'msgKey' => array(
1550                                                         'blocked-notice-logextract',
1551                                                         $user->getName() # Support GENDER in notice
1552                                                 )
1553                                         )
1554                                 );
1555                         }
1556                 }
1557                 # Try to add a custom edit intro, or use the standard one if this is not possible.
1558                 if ( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
1559                         if ( $wgUser->isLoggedIn() ) {
1560                                 $wgOut->wrapWikiMsg( "<div class=\"mw-newarticletext\">\n$1\n</div>", 'newarticletext' );
1561                         } else {
1562                                 $wgOut->wrapWikiMsg( "<div class=\"mw-newarticletextanon\">\n$1\n</div>", 'newarticletextanon' );
1563                         }
1564                 }
1565                 # Give a notice if the user is editing a deleted/moved page...
1566                 if ( !$this->mTitle->exists() ) {
1567                         LogEventsList::showLogExtract( $wgOut, array( 'delete', 'move' ), $this->mTitle,
1568                                 '', array( 'lim' => 10,
1569                                            'conds' => array( "log_action != 'revision'" ),
1570                                            'showIfEmpty' => false,
1571                                            'msgKey' => array( 'recreate-moveddeleted-warn') )
1572                         );
1573                 }
1574         }
1575
1576         /**
1577          * Attempt to show a custom editing introduction, if supplied
1578          *
1579          * @return bool
1580          */
1581         protected function showCustomIntro() {
1582                 if ( $this->editintro ) {
1583                         $title = Title::newFromText( $this->editintro );
1584                         if ( $title instanceof Title && $title->exists() && $title->userCan( 'read' ) ) {
1585                                 global $wgOut;
1586                                 // Added using template syntax, to take <noinclude>'s into account.
1587                                 $wgOut->addWikiTextTitleTidy( '{{:' . $title->getFullText() . '}}', $this->mTitle );
1588                                 return true;
1589                         } else {
1590                                 return false;
1591                         }
1592                 } else {
1593                         return false;
1594                 }
1595         }
1596
1597         /**
1598          * Send the edit form and related headers to $wgOut
1599          * @param $formCallback Callback that takes an OutputPage parameter; will be called
1600          *     during form output near the top, for captchas and the like.
1601          */
1602         function showEditForm( $formCallback = null ) {
1603                 global $wgOut, $wgUser;
1604
1605                 wfProfileIn( __METHOD__ );
1606
1607                 #need to parse the preview early so that we know which templates are used,
1608                 #otherwise users with "show preview after edit box" will get a blank list
1609                 #we parse this near the beginning so that setHeaders can do the title
1610                 #setting work instead of leaving it in getPreviewText
1611                 $previewOutput = '';
1612                 if ( $this->formtype == 'preview' ) {
1613                         $previewOutput = $this->getPreviewText();
1614                 }
1615
1616                 wfRunHooks( 'EditPage::showEditForm:initial', array( &$this ) );
1617
1618                 $this->setHeaders();
1619
1620                 # Enabled article-related sidebar, toplinks, etc.
1621                 $wgOut->setArticleRelated( true );
1622
1623                 if ( $this->showHeader() === false ) {
1624                         wfProfileOut( __METHOD__ );
1625                         return;
1626                 }
1627
1628                 $action = htmlspecialchars( $this->getActionURL( $this->getContextTitle() ) );
1629
1630                 if ( $wgUser->getOption( 'showtoolbar' ) and !$this->isCssJsSubpage ) {
1631                         # prepare toolbar for edit buttons
1632                         $toolbar = EditPage::getEditToolbar();
1633                 } else {
1634                         $toolbar = '';
1635                 }
1636
1637
1638                 $wgOut->addHTML( $this->editFormPageTop );
1639
1640                 if ( $wgUser->getOption( 'previewontop' ) ) {
1641                         $this->displayPreviewArea( $previewOutput, true );
1642                 }
1643
1644                 $wgOut->addHTML( $this->editFormTextTop );
1645
1646                 $templates = $this->getTemplates();
1647                 $formattedtemplates = Linker::formatTemplates( $templates, $this->preview, $this->section != '');
1648
1649                 $hiddencats = $this->mArticle->getHiddenCategories();
1650                 $formattedhiddencats = Linker::formatHiddenCategories( $hiddencats );
1651
1652                 if ( $this->wasDeletedSinceLastEdit() && 'save' != $this->formtype ) {
1653                         $wgOut->wrapWikiMsg(
1654                                 "<div class='error mw-deleted-while-editing'>\n$1\n</div>",
1655                                 'deletedwhileediting' );
1656                 } elseif ( $this->wasDeletedSinceLastEdit() ) {
1657                         // Hide the toolbar and edit area, user can click preview to get it back
1658                         // Add an confirmation checkbox and explanation.
1659                         $toolbar = '';
1660                         // @todo move this to a cleaner conditional instead of blanking a variable
1661                 }
1662                 $wgOut->addHTML( <<<HTML
1663 <form id="editform" name="editform" method="post" action="$action" enctype="multipart/form-data">
1664 HTML
1665 );
1666
1667                 if ( is_callable( $formCallback ) ) {
1668                         call_user_func_array( $formCallback, array( &$wgOut ) );
1669                 }
1670
1671                 wfRunHooks( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );
1672
1673                 // Put these up at the top to ensure they aren't lost on early form submission
1674                 $this->showFormBeforeText();
1675
1676                 if ( $this->wasDeletedSinceLastEdit() && 'save' == $this->formtype ) {
1677                         $username = $this->lastDelete->user_name;
1678                         $comment = $this->lastDelete->log_comment;
1679
1680                         // It is better to not parse the comment at all than to have templates expanded in the middle
1681                         // TODO: can the checkLabel be moved outside of the div so that wrapWikiMsg could be used?
1682                         $key = $comment === ''
1683                                 ? 'confirmrecreate-noreason'
1684                                 : 'confirmrecreate';
1685                         $wgOut->addHTML(
1686                                 '<div class="mw-confirm-recreate">' .
1687                                 wfMsgExt( $key, 'parseinline', $username, "<nowiki>$comment</nowiki>" ) .
1688                                 Xml::checkLabel( wfMsg( 'recreate' ), 'wpRecreate', 'wpRecreate', false,
1689                                         array( 'title' => Linker::titleAttrib( 'recreate' ), 'tabindex' => 1, 'id' => 'wpRecreate' )
1690                                 ) .
1691                                 '</div>'
1692                         );
1693                 }
1694
1695                 # If a blank edit summary was previously provided, and the appropriate
1696                 # user preference is active, pass a hidden tag as wpIgnoreBlankSummary. This will stop the
1697                 # user being bounced back more than once in the event that a summary
1698                 # is not required.
1699                 #####
1700                 # For a bit more sophisticated detection of blank summaries, hash the
1701                 # automatic one and pass that in the hidden field wpAutoSummary.
1702                 if ( $this->missingSummary ||
1703                         ( $this->section == 'new' && $this->nosummary ) )
1704                                 $wgOut->addHTML( Html::hidden( 'wpIgnoreBlankSummary', true ) );
1705                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
1706                 $wgOut->addHTML( Html::hidden( 'wpAutoSummary', $autosumm ) );
1707
1708                 $wgOut->addHTML( Html::hidden( 'oldid', $this->oldid ) );
1709
1710                 if ( $this->section == 'new' ) {
1711                         $this->showSummaryInput( true, $this->summary );
1712                         $wgOut->addHTML( $this->getSummaryPreview( true, $this->summary ) );
1713                 }
1714
1715                 $wgOut->addHTML( $this->editFormTextBeforeContent );
1716
1717                 $wgOut->addHTML( $toolbar );
1718
1719                 if ( $this->isConflict ) {
1720                         // In an edit conflict bypass the overrideable content form method
1721                         // and fallback to the raw wpTextbox1 since editconflicts can't be
1722                         // resolved between page source edits and custom ui edits using the
1723                         // custom edit ui.
1724                         $this->showTextbox1( null, $this->getContent() );
1725                 } else {
1726                         $this->showContentForm();
1727                 }
1728
1729                 $wgOut->addHTML( $this->editFormTextAfterContent );
1730
1731                 $wgOut->addWikiText( $this->getCopywarn() );
1732                 if ( isset($this->editFormTextAfterWarn) && $this->editFormTextAfterWarn !== '' )
1733                         $wgOut->addHTML( $this->editFormTextAfterWarn );
1734
1735                 $this->showStandardInputs();
1736
1737                 $this->showFormAfterText();
1738
1739                 $this->showTosSummary();
1740                 $this->showEditTools();
1741
1742                 $wgOut->addHTML( <<<HTML
1743 {$this->editFormTextAfterTools}
1744 <div class='templatesUsed'>
1745 {$formattedtemplates}
1746 </div>
1747 <div class='hiddencats'>
1748 {$formattedhiddencats}
1749 </div>
1750 HTML
1751 );
1752
1753                 if ( $this->isConflict )
1754                         $this->showConflict();
1755
1756                 $wgOut->addHTML( $this->editFormTextBottom );
1757                 $wgOut->addHTML( "</form>\n" );
1758                 if ( !$wgUser->getOption( 'previewontop' ) ) {
1759                         $this->displayPreviewArea( $previewOutput, false );
1760                 }
1761
1762                 wfProfileOut( __METHOD__ );
1763         }
1764
1765         /**
1766          * Extract the section title from current section text, if any.
1767          *
1768          * @param string $text
1769          * @return Mixed|string or false
1770          */
1771         public static function extractSectionTitle( $text ) {
1772                 preg_match( "/^(=+)(.+)\\1(\n|$)/i", $text, $matches );
1773                 if ( !empty( $matches[2] ) ) {
1774                         global $wgParser;
1775                         return $wgParser->stripSectionName(trim($matches[2]));
1776                 } else {
1777                         return false;
1778                 }
1779         }
1780
1781         protected function showHeader() {
1782                 global $wgOut, $wgUser, $wgMaxArticleSize, $wgLang;
1783                 if ( $this->isConflict ) {
1784                         $wgOut->wrapWikiMsg( "<div class='mw-explainconflict'>\n$1\n</div>", 'explainconflict' );
1785                         $this->edittime = $this->mArticle->getTimestamp();
1786                 } else {
1787                         if ( $this->section != '' && !$this->isSectionEditSupported() ) {
1788                                 // We use $this->section to much before this and getVal('wgSection') directly in other places
1789                                 // at this point we can't reset $this->section to '' to fallback to non-section editing.
1790                                 // Someone is welcome to try refactoring though
1791                                 $wgOut->showErrorPage( 'sectioneditnotsupported-title', 'sectioneditnotsupported-text' );
1792                                 return false;
1793                         }
1794
1795                         if ( $this->section != '' && $this->section != 'new' ) {
1796                                 $matches = array();
1797                                 if ( !$this->summary && !$this->preview && !$this->diff ) {
1798                                         $sectionTitle = self::extractSectionTitle( $this->textbox1 );
1799                                         if ( $sectionTitle !== false ) {
1800                                                 $this->summary = "/* $sectionTitle */ ";
1801                                         }
1802                                 }
1803                         }
1804
1805                         if ( $this->missingComment ) {
1806                                 $wgOut->wrapWikiMsg( "<div id='mw-missingcommenttext'>\n$1\n</div>", 'missingcommenttext' );
1807                         }
1808
1809                         if ( $this->missingSummary && $this->section != 'new' ) {
1810                                 $wgOut->wrapWikiMsg( "<div id='mw-missingsummary'>\n$1\n</div>", 'missingsummary' );
1811                         }
1812
1813                         if ( $this->missingSummary && $this->section == 'new' ) {
1814                                 $wgOut->wrapWikiMsg( "<div id='mw-missingcommentheader'>\n$1\n</div>", 'missingcommentheader' );
1815                         }
1816
1817                         if ( $this->hookError !== '' ) {
1818                                 $wgOut->addWikiText( $this->hookError );
1819                         }
1820
1821                         if ( !$this->checkUnicodeCompliantBrowser() ) {
1822                                 $wgOut->addWikiMsg( 'nonunicodebrowser' );
1823                         }
1824
1825                         if ( $this->section != 'new' ) {
1826                                 $revision = $this->mArticle->getRevisionFetched();
1827                                 if ( $revision ) {
1828                                         // Let sysop know that this will make private content public if saved
1829
1830                                         if ( !$revision->userCan( Revision::DELETED_TEXT ) ) {
1831                                                 $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n", 'rev-deleted-text-permission' );
1832                                         } elseif ( $revision->isDeleted( Revision::DELETED_TEXT ) ) {
1833                                                 $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n", 'rev-deleted-text-view' );
1834                                         }
1835
1836                                         if ( !$revision->isCurrent() ) {
1837                                                 $this->mArticle->setOldSubtitle( $revision->getId() );
1838                                                 $wgOut->addWikiMsg( 'editingold' );
1839                                         }
1840                                 }
1841                         }
1842                 }
1843
1844                 if ( wfReadOnly() ) {
1845                         $wgOut->wrapWikiMsg( "<div id=\"mw-read-only-warning\">\n$1\n</div>", array( 'readonlywarning', wfReadOnlyReason() ) );
1846                 } elseif ( $wgUser->isAnon() ) {
1847                         if ( $this->formtype != 'preview' ) {
1848                                 $wgOut->wrapWikiMsg( "<div id=\"mw-anon-edit-warning\">\n$1</div>", 'anoneditwarning' );
1849                         } else {
1850                                 $wgOut->wrapWikiMsg( "<div id=\"mw-anon-preview-warning\">\n$1</div>", 'anonpreviewwarning' );
1851                         }
1852                 } else {
1853                         if ( $this->isCssJsSubpage ) {
1854                                 # Check the skin exists
1855                                 if ( $this->isWrongCaseCssJsPage ) {
1856                                         $wgOut->wrapWikiMsg( "<div class='error' id='mw-userinvalidcssjstitle'>\n$1\n</div>", array( 'userinvalidcssjstitle', $this->mTitle->getSkinFromCssJsSubpage() ) );
1857                                 }
1858                                 if ( $this->formtype !== 'preview' ) {
1859                                         if ( $this->isCssSubpage )
1860                                                 $wgOut->wrapWikiMsg( "<div id='mw-usercssyoucanpreview'>\n$1\n</div>", array( 'usercssyoucanpreview' ) );
1861                                         if ( $this->isJsSubpage )
1862                                                 $wgOut->wrapWikiMsg( "<div id='mw-userjsyoucanpreview'>\n$1\n</div>", array( 'userjsyoucanpreview' ) );
1863                                 }
1864                         }
1865                 }
1866
1867                 if ( $this->mTitle->getNamespace() != NS_MEDIAWIKI && $this->mTitle->isProtected( 'edit' ) ) {
1868                         # Is the title semi-protected?
1869                         if ( $this->mTitle->isSemiProtected() ) {
1870                                 $noticeMsg = 'semiprotectedpagewarning';
1871                         } else {
1872                                 # Then it must be protected based on static groups (regular)
1873                                 $noticeMsg = 'protectedpagewarning';
1874                         }
1875                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle, '',
1876                                 array( 'lim' => 1, 'msgKey' => array( $noticeMsg ) ) );
1877                 }
1878                 if ( $this->mTitle->isCascadeProtected() ) {
1879                         # Is this page under cascading protection from some source pages?
1880                         list($cascadeSources, /* $restrictions */) = $this->mTitle->getCascadeProtectionSources();
1881                         $notice = "<div class='mw-cascadeprotectedwarning'>\n$1\n";
1882                         $cascadeSourcesCount = count( $cascadeSources );
1883                         if ( $cascadeSourcesCount > 0 ) {
1884                                 # Explain, and list the titles responsible
1885                                 foreach( $cascadeSources as $page ) {
1886                                         $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
1887                                 }
1888                         }
1889                         $notice .= '</div>';
1890                         $wgOut->wrapWikiMsg( $notice, array( 'cascadeprotectedwarning', $cascadeSourcesCount ) );
1891                 }
1892                 if ( !$this->mTitle->exists() && $this->mTitle->getRestrictions( 'create' ) ) {
1893                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle, '',
1894                                 array(  'lim' => 1,
1895                                         'showIfEmpty' => false,
1896                                         'msgKey' => array( 'titleprotectedwarning' ),
1897                                         'wrap' => "<div class=\"mw-titleprotectedwarning\">\n$1</div>" ) );
1898                 }
1899
1900                 if ( $this->kblength === false ) {
1901                         $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
1902                 }
1903
1904                 if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
1905                         $wgOut->wrapWikiMsg( "<div class='error' id='mw-edit-longpageerror'>\n$1\n</div>",
1906                                 array( 'longpageerror', $wgLang->formatNum( $this->kblength ), $wgLang->formatNum( $wgMaxArticleSize ) ) );
1907                 } else {
1908                         if( !wfMessage('longpage-hint')->isDisabled() ) {
1909                                 $wgOut->wrapWikiMsg( "<div id='mw-edit-longpage-hint'>\n$1\n</div>",
1910                                         array( 'longpage-hint', $wgLang->formatSize( strlen( $this->textbox1 ) ), strlen( $this->textbox1 ) )
1911                                 );
1912                         }
1913                 }
1914         }
1915
1916         /**
1917          * Standard summary input and label (wgSummary), abstracted so EditPage
1918          * subclasses may reorganize the form.
1919          * Note that you do not need to worry about the label's for=, it will be
1920          * inferred by the id given to the input. You can remove them both by
1921          * passing array( 'id' => false ) to $userInputAttrs.
1922          *
1923          * @param $summary string The value of the summary input
1924          * @param $labelText string The html to place inside the label
1925          * @param $inputAttrs array of attrs to use on the input
1926          * @param $spanLabelAttrs array of attrs to use on the span inside the label
1927          *
1928          * @return array An array in the format array( $label, $input )
1929          */
1930         function getSummaryInput($summary = "", $labelText = null, $inputAttrs = null, $spanLabelAttrs = null) {
1931                 //Note: the maxlength is overriden in JS to 250 and to make it use UTF-8 bytes, not characters.
1932                 $inputAttrs = ( is_array($inputAttrs) ? $inputAttrs : array() ) + array(
1933                         'id' => 'wpSummary',
1934                         'maxlength' => '200',
1935                         'tabindex' => '1',
1936                         'size' => 60,
1937                         'spellcheck' => 'true',
1938                 ) + Linker::tooltipAndAccesskeyAttribs( 'summary' );
1939
1940                 $spanLabelAttrs = ( is_array($spanLabelAttrs) ? $spanLabelAttrs : array() ) + array(
1941                         'class' => $this->missingSummary ? 'mw-summarymissed' : 'mw-summary',
1942                         'id' => "wpSummaryLabel"
1943                 );
1944
1945                 $label = null;
1946                 if ( $labelText ) {
1947                         $label = Xml::tags( 'label', $inputAttrs['id'] ? array( 'for' => $inputAttrs['id'] ) : null, $labelText );
1948                         $label = Xml::tags( 'span', $spanLabelAttrs, $label );
1949                 }
1950
1951                 $input = Html::input( 'wpSummary', $summary, 'text', $inputAttrs );
1952
1953                 return array( $label, $input );
1954         }
1955
1956         /**
1957          * @param $isSubjectPreview Boolean: true if this is the section subject/title
1958          *                          up top, or false if this is the comment summary
1959          *                          down below the textarea
1960          * @param $summary String: The text of the summary to display
1961          * @return String
1962          */
1963         protected function showSummaryInput( $isSubjectPreview, $summary = "" ) {
1964                 global $wgOut, $wgContLang;
1965                 # Add a class if 'missingsummary' is triggered to allow styling of the summary line
1966                 $summaryClass = $this->missingSummary ? 'mw-summarymissed' : 'mw-summary';
1967                 if ( $isSubjectPreview ) {
1968                         if ( $this->nosummary ) {
1969                                 return;
1970                         }
1971                 } else {
1972                         if ( !$this->mShowSummaryField ) {
1973                                 return;
1974                         }
1975                 }
1976                 $summary = $wgContLang->recodeForEdit( $summary );
1977                 $labelText = wfMsgExt( $isSubjectPreview ? 'subject' : 'summary', 'parseinline' );
1978                 list($label, $input) = $this->getSummaryInput($summary, $labelText, array( 'class' => $summaryClass ), array());
1979                 $wgOut->addHTML("{$label} {$input}");
1980         }
1981
1982         /**
1983          * @param $isSubjectPreview Boolean: true if this is the section subject/title
1984          *                          up top, or false if this is the comment summary
1985          *                          down below the textarea
1986          * @param $summary String: the text of the summary to display
1987          * @return String
1988          */
1989         protected function getSummaryPreview( $isSubjectPreview, $summary = "" ) {
1990                 if ( !$summary || ( !$this->preview && !$this->diff ) )
1991                         return "";
1992
1993                 global $wgParser;
1994
1995                 if ( $isSubjectPreview )
1996                         $summary = wfMsgForContent( 'newsectionsummary', $wgParser->stripSectionName( $summary ) );
1997
1998                 $message = $isSubjectPreview ? 'subject-preview' : 'summary-preview';
1999
2000                 $summary = wfMsgExt( $message, 'parseinline' ) . Linker::commentBlock( $summary, $this->mTitle, $isSubjectPreview );
2001                 return Xml::tags( 'div', array( 'class' => 'mw-summary-preview' ), $summary );
2002         }
2003
2004         protected function showFormBeforeText() {
2005                 global $wgOut;
2006                 $section = htmlspecialchars( $this->section );
2007                 $wgOut->addHTML( <<<HTML
2008 <input type='hidden' value="{$section}" name="wpSection" />
2009 <input type='hidden' value="{$this->starttime}" name="wpStarttime" />
2010 <input type='hidden' value="{$this->edittime}" name="wpEdittime" />
2011 <input type='hidden' value="{$this->scrolltop}" name="wpScrolltop" id="wpScrolltop" />
2012
2013 HTML
2014                 );
2015                 if ( !$this->checkUnicodeCompliantBrowser() )
2016                         $wgOut->addHTML(Html::hidden( 'safemode', '1' ));
2017         }
2018
2019         protected function showFormAfterText() {
2020                 global $wgOut, $wgUser;
2021                 /**
2022                  * To make it harder for someone to slip a user a page
2023                  * which submits an edit form to the wiki without their
2024                  * knowledge, a random token is associated with the login
2025                  * session. If it's not passed back with the submission,
2026                  * we won't save the page, or render user JavaScript and
2027                  * CSS previews.
2028                  *
2029                  * For anon editors, who may not have a session, we just
2030                  * include the constant suffix to prevent editing from
2031                  * broken text-mangling proxies.
2032                  */
2033                 $wgOut->addHTML( "\n" . Html::hidden( "wpEditToken", $wgUser->getEditToken() ) . "\n" );
2034         }
2035
2036         /**
2037          * Subpage overridable method for printing the form for page content editing
2038          * By default this simply outputs wpTextbox1
2039          * Subclasses can override this to provide a custom UI for editing;
2040          * be it a form, or simply wpTextbox1 with a modified content that will be
2041          * reverse modified when extracted from the post data.
2042          * Note that this is basically the inverse for importContentFormData
2043          */
2044         protected function showContentForm() {
2045                 $this->showTextbox1();
2046         }
2047
2048         /**
2049          * Method to output wpTextbox1
2050          * The $textoverride method can be used by subclasses overriding showContentForm
2051          * to pass back to this method.
2052          *
2053          * @param $customAttribs An array of html attributes to use in the textarea
2054          * @param $textoverride String: optional text to override $this->textarea1 with
2055          */
2056         protected function showTextbox1($customAttribs = null, $textoverride = null) {
2057                 $classes = array(); // Textarea CSS
2058                 if ( $this->mTitle->getNamespace() != NS_MEDIAWIKI && $this->mTitle->isProtected( 'edit' ) ) {
2059                         # Is the title semi-protected?
2060                         if ( $this->mTitle->isSemiProtected() ) {
2061                                 $classes[] = 'mw-textarea-sprotected';
2062                         } else {
2063                                 # Then it must be protected based on static groups (regular)
2064                                 $classes[] = 'mw-textarea-protected';
2065                         }
2066                         # Is the title cascade-protected?
2067                         if ( $this->mTitle->isCascadeProtected() ) {
2068                                 $classes[] = 'mw-textarea-cprotected';
2069                         }
2070                 }
2071                 $attribs = array( 'tabindex' => 1 );
2072                 if ( is_array($customAttribs) )
2073                         $attribs += $customAttribs;
2074
2075                 if ( $this->wasDeletedSinceLastEdit() )
2076                         $attribs['type'] = 'hidden';
2077                 if ( !empty( $classes ) ) {
2078                         if ( isset($attribs['class']) )
2079                                 $classes[] = $attribs['class'];
2080                         $attribs['class'] = implode( ' ', $classes );
2081                 }
2082
2083                 $this->showTextbox( isset($textoverride) ? $textoverride : $this->textbox1, 'wpTextbox1', $attribs );
2084         }
2085
2086         protected function showTextbox2() {
2087                 $this->showTextbox( $this->textbox2, 'wpTextbox2', array( 'tabindex' => 6, 'readonly' ) );
2088         }
2089
2090         protected function showTextbox( $content, $name, $customAttribs = array() ) {
2091                 global $wgOut, $wgUser;
2092
2093                 $wikitext = $this->safeUnicodeOutput( $content );
2094                 if ( strval($wikitext) !== '' ) {
2095                         // Ensure there's a newline at the end, otherwise adding lines
2096                         // is awkward.
2097                         // But don't add a newline if the ext is empty, or Firefox in XHTML
2098                         // mode will show an extra newline. A bit annoying.
2099                         $wikitext .= "\n";
2100                 }
2101
2102                 $attribs = $customAttribs + array(
2103                         'accesskey' => ',',
2104                         'id'   => $name,
2105                         'rows' => $wgUser->getIntOption( 'rows' ),
2106                         'style' => '' // avoid php notices when appending preferences (appending allows customAttribs['style'] to still work
2107                 );
2108
2109                 $pageLang = $this->mTitle->getPageLanguage();
2110                 $attribs['lang'] = $pageLang->getCode();
2111                 $attribs['dir'] = $pageLang->getDir();
2112
2113                 $wgOut->addHTML( Html::textarea( $name, $wikitext, $attribs ) );
2114         }
2115
2116         protected function displayPreviewArea( $previewOutput, $isOnTop = false ) {
2117                 global $wgOut;
2118                 $classes = array();
2119                 if ( $isOnTop )
2120                         $classes[] = 'ontop';
2121
2122                 $attribs = array( 'id' => 'wikiPreview', 'class' => implode( ' ', $classes ) );
2123
2124                 if ( $this->formtype != 'preview' )
2125                         $attribs['style'] = 'display: none;';
2126
2127                 $wgOut->addHTML( Xml::openElement( 'div', $attribs ) );
2128
2129                 if ( $this->formtype == 'preview' ) {
2130                         $this->showPreview( $previewOutput );
2131                 }
2132
2133                 $wgOut->addHTML( '</div>' );
2134
2135                 if ( $this->formtype == 'diff') {
2136                         $this->showDiff();
2137                 }
2138         }
2139
2140         /**
2141          * Append preview output to $wgOut.
2142          * Includes category rendering if this is a category page.
2143          *
2144          * @param $text String: the HTML to be output for the preview.
2145          */
2146         protected function showPreview( $text ) {
2147                 global $wgOut;
2148                 if ( $this->mTitle->getNamespace() == NS_CATEGORY) {
2149                         $this->mArticle->openShowCategory();
2150                 }
2151                 # This hook seems slightly odd here, but makes things more
2152                 # consistent for extensions.
2153                 wfRunHooks( 'OutputPageBeforeHTML',array( &$wgOut, &$text ) );
2154                 $wgOut->addHTML( $text );
2155                 if ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
2156                         $this->mArticle->closeShowCategory();
2157                 }
2158         }
2159
2160         /**
2161          * Get a diff between the current contents of the edit box and the
2162          * version of the page we're editing from.
2163          *
2164          * If this is a section edit, we'll replace the section as for final
2165          * save and then make a comparison.
2166          */
2167         function showDiff() {
2168                 global $wgUser, $wgContLang, $wgParser, $wgOut;
2169
2170                 if ( $this->section == 'new' ) {
2171                         $oldtext = $this->mArticle->getRawText();
2172                 } else {
2173                         $oldtext = $this->mArticle->fetchContent();
2174                 }
2175                 $newtext = $this->mArticle->replaceSection(
2176                         $this->section, $this->textbox1, $this->summary, $this->edittime );
2177
2178                 wfRunHooks( 'EditPageGetDiffText', array( $this, &$newtext ) );
2179
2180                 $popts = ParserOptions::newFromUserAndLang( $wgUser, $wgContLang );
2181                 $newtext = $wgParser->preSaveTransform( $newtext, $this->mTitle, $wgUser, $popts );
2182
2183                 if ( $oldtext !== false  || $newtext != '' ) {
2184                         $oldtitle = wfMsgExt( 'currentrev', array( 'parseinline' ) );
2185                         $newtitle = wfMsgExt( 'yourtext', array( 'parseinline' ) );
2186
2187                         $de = new DifferenceEngine( $this->mArticle->getContext() );
2188                         $de->setText( $oldtext, $newtext );
2189                         $difftext = $de->getDiff( $oldtitle, $newtitle );
2190                         $de->showDiffStyle();
2191                 } else {
2192                         $difftext = '';
2193                 }
2194
2195                 $wgOut->addHTML( '<div id="wikiDiff">' . $difftext . '</div>' );
2196         }
2197
2198         /**
2199          * Give a chance for site and per-namespace customizations of
2200          * terms of service summary link that might exist separately
2201          * from the copyright notice.
2202          *
2203          * This will display between the save button and the edit tools,
2204          * so should remain short!
2205          */
2206         protected function showTosSummary() {
2207                 $msg = 'editpage-tos-summary';
2208                 wfRunHooks( 'EditPageTosSummary', array( $this->mTitle, &$msg ) );
2209                 if( !wfMessage( $msg )->isDisabled() ) {
2210                         global $wgOut;
2211                         $wgOut->addHTML( '<div class="mw-tos-summary">' );
2212                         $wgOut->addWikiMsg( $msg );
2213                         $wgOut->addHTML( '</div>' );
2214                 }
2215         }
2216
2217         protected function showEditTools() {
2218                 global $wgOut;
2219                 $wgOut->addHTML( '<div class="mw-editTools">' .
2220                         wfMessage( 'edittools' )->inContentLanguage()->parse() .
2221                         '</div>' );
2222         }
2223
2224         protected function getCopywarn() {
2225                 global $wgRightsText;
2226                 if ( $wgRightsText ) {
2227                         $copywarnMsg = array( 'copyrightwarning',
2228                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
2229                                 $wgRightsText );
2230                 } else {
2231                         $copywarnMsg = array( 'copyrightwarning2',
2232                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]' );
2233                 }
2234                 // Allow for site and per-namespace customization of contribution/copyright notice.
2235                 wfRunHooks( 'EditPageCopyrightWarning', array( $this->mTitle, &$copywarnMsg ) );
2236
2237                 return "<div id=\"editpage-copywarn\">\n" .
2238                         call_user_func_array("wfMsgNoTrans", $copywarnMsg) . "\n</div>";
2239         }
2240
2241         protected function showStandardInputs( &$tabindex = 2 ) {
2242                 global $wgOut;
2243                 $wgOut->addHTML( "<div class='editOptions'>\n" );
2244
2245                 if ( $this->section != 'new' ) {
2246                         $this->showSummaryInput( false, $this->summary );
2247                         $wgOut->addHTML( $this->getSummaryPreview( false, $this->summary ) );
2248                 }
2249
2250                 $checkboxes = $this->getCheckboxes( $tabindex,
2251                         array( 'minor' => $this->minoredit, 'watch' => $this->watchthis ) );
2252                 $wgOut->addHTML( "<div class='editCheckboxes'>" . implode( $checkboxes, "\n" ) . "</div>\n" );
2253                 $wgOut->addHTML( "<div class='editButtons'>\n" );
2254                 $wgOut->addHTML( implode( $this->getEditButtons( $tabindex ), "\n" ) . "\n" );
2255
2256                 $cancel = $this->getCancelLink();
2257                 if ( $cancel !== '' ) {
2258                         $cancel .= wfMsgExt( 'pipe-separator' , 'escapenoentities' );
2259                 }
2260                 $edithelpurl = Skin::makeInternalOrExternalUrl( wfMsgForContent( 'edithelppage' ) );
2261                 $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
2262                         htmlspecialchars( wfMsg( 'edithelp' ) ).'</a> '.
2263                         htmlspecialchars( wfMsg( 'newwindow' ) );
2264                 $wgOut->addHTML( "      <span class='editHelp'>{$cancel}{$edithelp}</span>\n" );
2265                 $wgOut->addHTML( "</div><!-- editButtons -->\n</div><!-- editOptions -->\n" );
2266         }
2267
2268         /**
2269          * Show an edit conflict. textbox1 is already shown in showEditForm().
2270          * If you want to use another entry point to this function, be careful.
2271          */
2272         protected function showConflict() {
2273                 global $wgOut;
2274                 $this->textbox2 = $this->textbox1;
2275                 $this->textbox1 = $this->getContent();
2276                 if ( wfRunHooks( 'EditPageBeforeConflictDiff', array( &$this, &$wgOut ) ) ) {
2277                         $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
2278
2279                         $de = new DifferenceEngine( $this->mArticle->getContext() );
2280                         $de->setText( $this->textbox2, $this->textbox1 );
2281                         $de->showDiff( wfMsgExt( 'yourtext', 'parseinline' ), wfMsg( 'storedversion' ) );
2282
2283                         $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
2284                         $this->showTextbox2();
2285                 }
2286         }
2287
2288         /**
2289          * @return string
2290          */
2291         public function getCancelLink() {
2292                 $cancelParams = array();
2293                 if ( !$this->isConflict && $this->oldid > 0 ) {
2294                         $cancelParams['oldid'] = $this->oldid;
2295                 }
2296
2297                 return Linker::linkKnown(
2298                         $this->getContextTitle(),
2299                         wfMsgExt( 'cancel', array( 'parseinline' ) ),
2300                         array( 'id' => 'mw-editform-cancel' ),
2301                         $cancelParams
2302                 );
2303         }
2304
2305         /**
2306          * Returns the URL to use in the form's action attribute.
2307          * This is used by EditPage subclasses when simply customizing the action
2308          * variable in the constructor is not enough. This can be used when the
2309          * EditPage lives inside of a Special page rather than a custom page action.
2310          *
2311          * @param $title Title object for which is being edited (where we go to for &action= links)
2312          * @return string
2313          */
2314         protected function getActionURL( Title $title ) {
2315                 return $title->getLocalURL( array( 'action' => $this->action ) );
2316         }
2317
2318         /**
2319          * Check if a page was deleted while the user was editing it, before submit.
2320          * Note that we rely on the logging table, which hasn't been always there,
2321          * but that doesn't matter, because this only applies to brand new
2322          * deletes.
2323          */
2324         protected function wasDeletedSinceLastEdit() {
2325                 if ( $this->deletedSinceEdit !== null ) {
2326                         return $this->deletedSinceEdit;
2327                 }
2328
2329                 $this->deletedSinceEdit = false;
2330
2331                 if ( $this->mTitle->isDeletedQuick() ) {
2332                         $this->lastDelete = $this->getLastDelete();
2333                         if ( $this->lastDelete ) {
2334                                 $deleteTime = wfTimestamp( TS_MW, $this->lastDelete->log_timestamp );
2335                                 if ( $deleteTime > $this->starttime ) {
2336                                         $this->deletedSinceEdit = true;
2337                                 }
2338                         }
2339                 }
2340
2341                 return $this->deletedSinceEdit;
2342         }
2343
2344         protected function getLastDelete() {
2345                 $dbr = wfGetDB( DB_SLAVE );
2346                 $data = $dbr->selectRow(
2347                         array( 'logging', 'user' ),
2348                         array( 'log_type',
2349                                    'log_action',
2350                                    'log_timestamp',
2351                                    'log_user',
2352                                    'log_namespace',
2353                                    'log_title',
2354                                    'log_comment',
2355                                    'log_params',
2356                                    'log_deleted',
2357                                    'user_name' ),
2358                         array( 'log_namespace' => $this->mTitle->getNamespace(),
2359                                    'log_title' => $this->mTitle->getDBkey(),
2360                                    'log_type' => 'delete',
2361                                    'log_action' => 'delete',
2362                                    'user_id=log_user' ),
2363                         __METHOD__,
2364                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' )
2365                 );
2366                 // Quick paranoid permission checks...
2367                 if( is_object( $data ) ) {
2368                         if( $data->log_deleted & LogPage::DELETED_USER )
2369                                 $data->user_name = wfMsgHtml( 'rev-deleted-user' );
2370                         if( $data->log_deleted & LogPage::DELETED_COMMENT )
2371                                 $data->log_comment = wfMsgHtml( 'rev-deleted-comment' );
2372                 }
2373                 return $data;
2374         }
2375
2376         /**
2377          * Get the rendered text for previewing.
2378          * @return string
2379          */
2380         function getPreviewText() {
2381                 global $wgOut, $wgUser, $wgParser, $wgRawHtml;
2382
2383                 wfProfileIn( __METHOD__ );
2384
2385                 if ( $wgRawHtml && !$this->mTokenOk ) {
2386                         // Could be an offsite preview attempt. This is very unsafe if
2387                         // HTML is enabled, as it could be an attack.
2388                         $parsedNote = '';
2389                         if ( $this->textbox1 !== '' ) {
2390                                 // Do not put big scary notice, if previewing the empty
2391                                 // string, which happens when you initially edit
2392                                 // a category page, due to automatic preview-on-open.
2393                                 $parsedNote = $wgOut->parse( "<div class='previewnote'>" .
2394                                         wfMsg( 'session_fail_preview_html' ) . "</div>", true, /* interface */true );
2395                         }
2396                         wfProfileOut( __METHOD__ );
2397                         return $parsedNote;
2398                 }
2399
2400                 if ( $this->mTriedSave && !$this->mTokenOk ) {
2401                         if ( $this->mTokenOkExceptSuffix ) {
2402                                 $note = wfMsg( 'token_suffix_mismatch' );
2403                         } else {
2404                                 $note = wfMsg( 'session_fail_preview' );
2405                         }
2406                 } elseif ( $this->incompleteForm ) {
2407                         $note = wfMsg( 'edit_form_incomplete' );
2408                 } else {
2409                         $note = wfMsg( 'previewnote' );
2410                 }
2411
2412                 $parserOptions = ParserOptions::newFromUser( $wgUser );
2413                 $parserOptions->setEditSection( false );
2414                 $parserOptions->setTidy( true );
2415                 $parserOptions->setIsPreview( true );
2416                 $parserOptions->setIsSectionPreview( !is_null($this->section) && $this->section !== '' );
2417
2418                 # don't parse non-wikitext pages, show message about preview
2419                 # XXX: stupid php bug won't let us use $this->getContextTitle()->isCssJsSubpage() here -- This note has been there since r3530. Sure the bug was fixed time ago?
2420
2421                 if ( $this->isCssJsSubpage || !$this->mTitle->isWikitextPage() ) {
2422                         if( $this->mTitle->isCssJsSubpage() ) {
2423                                 $level = 'user';
2424                         } elseif( $this->mTitle->isCssOrJsPage() ) {
2425                                 $level = 'site';
2426                         } else {
2427                                 $level = false;
2428                         }
2429
2430                         # Used messages to make sure grep find them:
2431                         # Messages: usercsspreview, userjspreview, sitecsspreview, sitejspreview
2432                         if( $level ) {
2433                                 if (preg_match( "/\\.css$/", $this->mTitle->getText() ) ) {
2434                                         $previewtext = "<div id='mw-{$level}csspreview'>\n" . wfMsg( "{$level}csspreview" ) . "\n</div>";
2435                                         $class = "mw-code mw-css";
2436                                 } elseif (preg_match( "/\\.js$/", $this->mTitle->getText() ) ) {
2437                                         $previewtext = "<div id='mw-{$level}jspreview'>\n" . wfMsg( "{$level}jspreview" ) . "\n</div>";
2438                                         $class = "mw-code mw-js";
2439                                 } else {
2440                                         throw new MWException( 'A CSS/JS (sub)page but which is not css nor js!' );
2441                                 }
2442                         }
2443
2444                         $parserOutput = $wgParser->parse( $previewtext, $this->mTitle, $parserOptions );
2445                         $previewHTML = $parserOutput->mText;
2446                         $previewHTML .= "<pre class=\"$class\" dir=\"ltr\">\n" . htmlspecialchars( $this->textbox1 ) . "\n</pre>\n";
2447                 } else {
2448                         $rt = Title::newFromRedirectArray( $this->textbox1 );
2449                         if ( $rt ) {
2450                                 $previewHTML = $this->mArticle->viewRedirect( $rt, false );
2451                         } else {
2452                                 $toparse = $this->textbox1;
2453
2454                                 # If we're adding a comment, we need to show the
2455                                 # summary as the headline
2456                                 if ( $this->section == "new" && $this->summary != "" ) {
2457                                         $toparse = wfMsgForContent( 'newsectionheaderdefaultlevel', $this->summary ) . "\n\n" . $toparse;
2458                                 }
2459
2460                                 wfRunHooks( 'EditPageGetPreviewText', array( $this, &$toparse ) );
2461
2462                                 $parserOptions->enableLimitReport();
2463
2464                                 $toparse = $wgParser->preSaveTransform( $toparse, $this->mTitle, $wgUser, $parserOptions );
2465                                 $parserOutput = $wgParser->parse( $toparse, $this->mTitle, $parserOptions );
2466
2467                                 $previewHTML = $parserOutput->getText();
2468                                 $this->mParserOutput = $parserOutput;
2469                                 $wgOut->addParserOutputNoText( $parserOutput );
2470
2471                                 if ( count( $parserOutput->getWarnings() ) ) {
2472                                         $note .= "\n\n" . implode( "\n\n", $parserOutput->getWarnings() );
2473                                 }
2474                         }
2475                 }
2476
2477                 if( $this->isConflict ) {
2478                         $conflict = '<h2 id="mw-previewconflict">' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
2479                 } else {
2480                         $conflict = '<hr />';
2481                 }
2482
2483                 $previewhead = "<div class='previewnote'>\n" .
2484                         '<h2 id="mw-previewheader">' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>" .
2485                         $wgOut->parse( $note, true, /* interface */true ) . $conflict . "</div>\n";
2486
2487                 $pageLang = $this->mTitle->getPageLanguage();
2488                 $attribs = array( 'lang' => $pageLang->getCode(), 'dir' => $pageLang->getDir(),
2489                         'class' => 'mw-content-'.$pageLang->getDir() );
2490                 $previewHTML = Html::rawElement( 'div', $attribs, $previewHTML );
2491
2492                 wfProfileOut( __METHOD__ );
2493                 return $previewhead . $previewHTML . $this->previewTextAfterContent;
2494         }
2495
2496         /**
2497          * @return Array
2498          */
2499         function getTemplates() {
2500                 if ( $this->preview || $this->section != '' ) {
2501                         $templates = array();
2502                         if ( !isset( $this->mParserOutput ) ) {
2503                                 return $templates;
2504                         }
2505                         foreach( $this->mParserOutput->getTemplates() as $ns => $template) {
2506                                 foreach( array_keys( $template ) as $dbk ) {
2507                                         $templates[] = Title::makeTitle($ns, $dbk);
2508                                 }
2509                         }
2510                         return $templates;
2511                 } else {
2512                         return $this->mTitle->getTemplateLinksFrom();
2513                 }
2514         }
2515
2516         /**
2517          * Shows a bulletin board style toolbar for common editing functions.
2518          * It can be disabled in the user preferences.
2519          * The necessary JavaScript code can be found in skins/common/edit.js.
2520          *
2521          * @return string
2522          */
2523         static function getEditToolbar() {
2524                 global $wgStylePath, $wgContLang, $wgLang, $wgOut;
2525                 global $wgUseTeX, $wgEnableUploads, $wgForeignFileRepos;
2526
2527                 $imagesAvailable = $wgEnableUploads || count( $wgForeignFileRepos );
2528
2529                 /**
2530                  * $toolarray is an array of arrays each of which includes the
2531                  * filename of the button image (without path), the opening
2532                  * tag, the closing tag, optionally a sample text that is
2533                  * inserted between the two when no selection is highlighted
2534                  * and.  The tip text is shown when the user moves the mouse
2535                  * over the button.
2536                  *
2537                  * Also here: accesskeys (key), which are not used yet until
2538                  * someone can figure out a way to make them work in
2539                  * IE. However, we should make sure these keys are not defined
2540                  * on the edit page.
2541                  */
2542                 $toolarray = array(
2543                         array(
2544                                 'image'  => $wgLang->getImageFile( 'button-bold' ),
2545                                 'id'     => 'mw-editbutton-bold',
2546                                 'open'   => '\'\'\'',
2547                                 'close'  => '\'\'\'',
2548                                 'sample' => wfMsg( 'bold_sample' ),
2549                                 'tip'    => wfMsg( 'bold_tip' ),
2550                                 'key'    => 'B'
2551                         ),
2552                         array(
2553                                 'image'  => $wgLang->getImageFile( 'button-italic' ),
2554                                 'id'     => 'mw-editbutton-italic',
2555                                 'open'   => '\'\'',
2556                                 'close'  => '\'\'',
2557                                 'sample' => wfMsg( 'italic_sample' ),
2558                                 'tip'    => wfMsg( 'italic_tip' ),
2559                                 'key'    => 'I'
2560                         ),
2561                         array(
2562                                 'image'  => $wgLang->getImageFile( 'button-link' ),
2563                                 'id'     => 'mw-editbutton-link',
2564                                 'open'   => '[[',
2565                                 'close'  => ']]',
2566                                 'sample' => wfMsg( 'link_sample' ),
2567                                 'tip'    => wfMsg( 'link_tip' ),
2568                                 'key'    => 'L'
2569                         ),
2570                         array(
2571                                 'image'  => $wgLang->getImageFile( 'button-extlink' ),
2572                                 'id'     => 'mw-editbutton-extlink',
2573                                 'open'   => '[',
2574                                 'close'  => ']',
2575                                 'sample' => wfMsg( 'extlink_sample' ),
2576                                 'tip'    => wfMsg( 'extlink_tip' ),
2577                                 'key'    => 'X'
2578                         ),
2579                         array(
2580                                 'image'  => $wgLang->getImageFile( 'button-headline' ),
2581                                 'id'     => 'mw-editbutton-headline',
2582                                 'open'   => "\n== ",
2583                                 'close'  => " ==\n",
2584                                 'sample' => wfMsg( 'headline_sample' ),
2585                                 'tip'    => wfMsg( 'headline_tip' ),
2586                                 'key'    => 'H'
2587                         ),
2588                         $imagesAvailable ? array(
2589                                 'image'  => $wgLang->getImageFile( 'button-image' ),
2590                                 'id'     => 'mw-editbutton-image',
2591                                 'open'   => '[[' . $wgContLang->getNsText( NS_FILE ) . ':',
2592                                 'close'  => ']]',
2593                                 'sample' => wfMsg( 'image_sample' ),
2594                                 'tip'    => wfMsg( 'image_tip' ),
2595                                 'key'    => 'D',
2596                         ) : false,
2597                         $imagesAvailable ? array(
2598                                 'image'  => $wgLang->getImageFile( 'button-media' ),
2599                                 'id'     => 'mw-editbutton-media',
2600                                 'open'   => '[[' . $wgContLang->getNsText( NS_MEDIA ) . ':',
2601                                 'close'  => ']]',
2602                                 'sample' => wfMsg( 'media_sample' ),
2603                                 'tip'    => wfMsg( 'media_tip' ),
2604                                 'key'    => 'M'
2605                         ) : false,
2606                         $wgUseTeX ?     array(
2607                                 'image'  => $wgLang->getImageFile( 'button-math' ),
2608                                 'id'     => 'mw-editbutton-math',
2609                                 'open'   => "<math>",
2610                                 'close'  => "</math>",
2611                                 'sample' => wfMsg( 'math_sample' ),
2612                                 'tip'    => wfMsg( 'math_tip' ),
2613                                 'key'    => 'C'
2614                         ) : false,
2615                         array(
2616                                 'image'  => $wgLang->getImageFile( 'button-nowiki' ),
2617                                 'id'     => 'mw-editbutton-nowiki',
2618                                 'open'   => "<nowiki>",
2619                                 'close'  => "</nowiki>",
2620                                 'sample' => wfMsg( 'nowiki_sample' ),
2621                                 'tip'    => wfMsg( 'nowiki_tip' ),
2622                                 'key'    => 'N'
2623                         ),
2624                         array(
2625                                 'image'  => $wgLang->getImageFile( 'button-sig' ),
2626                                 'id'     => 'mw-editbutton-signature',
2627                                 'open'   => '--~~~~',
2628                                 'close'  => '',
2629                                 'sample' => '',
2630                                 'tip'    => wfMsg( 'sig_tip' ),
2631                                 'key'    => 'Y'
2632                         ),
2633                         array(
2634                                 'image'  => $wgLang->getImageFile( 'button-hr' ),
2635                                 'id'     => 'mw-editbutton-hr',
2636                                 'open'   => "\n----\n",
2637                                 'close'  => '',
2638                                 'sample' => '',
2639                                 'tip'    => wfMsg( 'hr_tip' ),
2640                                 'key'    => 'R'
2641                         )
2642                 );
2643
2644                 $script = '';
2645                 foreach ( $toolarray as $tool ) {
2646                         if ( !$tool ) {
2647                                 continue;
2648                         }
2649
2650                         $params = array(
2651                                 $image = $wgStylePath . '/common/images/' . $tool['image'],
2652                                 // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
2653                                 // Older browsers show a "speedtip" type message only for ALT.
2654                                 // Ideally these should be different, realistically they
2655                                 // probably don't need to be.
2656                                 $tip = $tool['tip'],
2657                                 $open = $tool['open'],
2658                                 $close = $tool['close'],
2659                                 $sample = $tool['sample'],
2660                                 $cssId = $tool['id'],
2661                         );
2662
2663                         $script .= Xml::encodeJsCall( 'mw.toolbar.addButton', $params );
2664                 }
2665                 $wgOut->addScript( Html::inlineScript( ResourceLoader::makeLoaderConditionalScript( $script ) ) );
2666
2667                 $toolbar = '<div id="toolbar"></div>';
2668
2669                 wfRunHooks( 'EditPageBeforeEditToolbar', array( &$toolbar ) );
2670
2671                 return $toolbar;
2672         }
2673
2674         /**
2675          * Returns an array of html code of the following checkboxes:
2676          * minor and watch
2677          *
2678          * @param $tabindex Current tabindex
2679          * @param $checked Array of checkbox => bool, where bool indicates the checked
2680          *                 status of the checkbox
2681          *
2682          * @return array
2683          */
2684         public function getCheckboxes( &$tabindex, $checked ) {
2685                 global $wgUser;
2686
2687                 $checkboxes = array();
2688
2689                 // don't show the minor edit checkbox if it's a new page or section
2690                 if ( !$this->isNew ) {
2691                         $checkboxes['minor'] = '';
2692                         $minorLabel = wfMsgExt( 'minoredit', array( 'parseinline' ) );
2693                         if ( $wgUser->isAllowed( 'minoredit' ) ) {
2694                                 $attribs = array(
2695                                         'tabindex'  => ++$tabindex,
2696                                         'accesskey' => wfMsg( 'accesskey-minoredit' ),
2697                                         'id'        => 'wpMinoredit',
2698                                 );
2699                                 $checkboxes['minor'] =
2700                                         Xml::check( 'wpMinoredit', $checked['minor'], $attribs ) .
2701                                         "&#160;<label for='wpMinoredit' id='mw-editpage-minoredit'" .
2702                                         Xml::expandAttributes( array( 'title' => Linker::titleAttrib( 'minoredit', 'withaccess' ) ) ) .
2703                                         ">{$minorLabel}</label>";
2704                         }
2705                 }
2706
2707                 $watchLabel = wfMsgExt( 'watchthis', array( 'parseinline' ) );
2708                 $checkboxes['watch'] = '';
2709                 if ( $wgUser->isLoggedIn() ) {
2710                         $attribs = array(
2711                                 'tabindex'  => ++$tabindex,
2712                                 'accesskey' => wfMsg( 'accesskey-watch' ),
2713                                 'id'        => 'wpWatchthis',
2714                         );
2715                         $checkboxes['watch'] =
2716                                 Xml::check( 'wpWatchthis', $checked['watch'], $attribs ) .
2717                                 "&#160;<label for='wpWatchthis' id='mw-editpage-watch'" .
2718                                 Xml::expandAttributes( array( 'title' => Linker::titleAttrib( 'watch', 'withaccess' ) ) ) .
2719                                 ">{$watchLabel}</label>";
2720                 }
2721                 wfRunHooks( 'EditPageBeforeEditChecks', array( &$this, &$checkboxes, &$tabindex ) );
2722                 return $checkboxes;
2723         }
2724
2725         /**
2726          * Returns an array of html code of the following buttons:
2727          * save, diff, preview and live
2728          *
2729          * @param $tabindex Current tabindex
2730          *
2731          * @return array
2732          */
2733         public function getEditButtons( &$tabindex ) {
2734                 $buttons = array();
2735
2736                 $temp = array(
2737                         'id'        => 'wpSave',
2738                         'name'      => 'wpSave',
2739                         'type'      => 'submit',
2740                         'tabindex'  => ++$tabindex,
2741                         'value'     => wfMsg( 'savearticle' ),
2742                         'accesskey' => wfMsg( 'accesskey-save' ),
2743                         'title'     => wfMsg( 'tooltip-save' ).' ['.wfMsg( 'accesskey-save' ).']',
2744                 );
2745                 $buttons['save'] = Xml::element('input', $temp, '');
2746
2747                 ++$tabindex; // use the same for preview and live preview
2748                 $temp = array(
2749                         'id'        => 'wpPreview',
2750                         'name'      => 'wpPreview',
2751                         'type'      => 'submit',
2752                         'tabindex'  => $tabindex,
2753                         'value'     => wfMsg( 'showpreview' ),
2754                         'accesskey' => wfMsg( 'accesskey-preview' ),
2755                         'title'     => wfMsg( 'tooltip-preview' ) . ' [' . wfMsg( 'accesskey-preview' ) . ']',
2756                 );
2757                 $buttons['preview'] = Xml::element( 'input', $temp, '' );
2758                 $buttons['live'] = '';
2759
2760                 $temp = array(
2761                         'id'        => 'wpDiff',
2762                         'name'      => 'wpDiff',
2763                         'type'      => 'submit',
2764                         'tabindex'  => ++$tabindex,
2765                         'value'     => wfMsg( 'showdiff' ),
2766                         'accesskey' => wfMsg( 'accesskey-diff' ),
2767                         'title'     => wfMsg( 'tooltip-diff' ) . ' [' . wfMsg( 'accesskey-diff' ) . ']',
2768                 );
2769                 $buttons['diff'] = Xml::element( 'input', $temp, '' );
2770
2771                 wfRunHooks( 'EditPageBeforeEditButtons', array( &$this, &$buttons, &$tabindex ) );
2772                 return $buttons;
2773         }
2774
2775         /**
2776          * Output preview text only. This can be sucked into the edit page
2777          * via JavaScript, and saves the server time rendering the skin as
2778          * well as theoretically being more robust on the client (doesn't
2779          * disturb the edit box's undo history, won't eat your text on
2780          * failure, etc).
2781          *
2782          * @todo This doesn't include category or interlanguage links.
2783          *       Would need to enhance it a bit, <s>maybe wrap them in XML
2784          *       or something...</s> that might also require more skin
2785          *       initialization, so check whether that's a problem.
2786          */
2787         function livePreview() {
2788                 global $wgOut;
2789                 $wgOut->disable();
2790                 header( 'Content-type: text/xml; charset=utf-8' );
2791                 header( 'Cache-control: no-cache' );
2792
2793                 $previewText = $this->getPreviewText();
2794                 #$categories = $skin->getCategoryLinks();
2795
2796                 $s =
2797                 '<?xml version="1.0" encoding="UTF-8" ?>' . "\n" .
2798                 Xml::tags( 'livepreview', null,
2799                         Xml::element( 'preview', null, $previewText )
2800                         #.      Xml::element( 'category', null, $categories )
2801                 );
2802                 echo $s;
2803         }
2804
2805         /**
2806          * Call the stock "user is blocked" page
2807          *
2808          * @deprecated in 1.19; throw an exception directly instead
2809          */
2810         function blockedPage() {
2811                 wfDeprecated( __METHOD__, '1.19' );
2812                 global $wgUser;
2813
2814                 throw new UserBlockedError( $wgUser->mBlock );
2815         }
2816
2817         /**
2818          * Produce the stock "please login to edit pages" page
2819          *
2820          * @deprecated in 1.19; throw an exception directly instead
2821          */
2822         function userNotLoggedInPage() {
2823                 wfDeprecated( __METHOD__, '1.19' );
2824                 throw new PermissionsError( 'edit' );
2825         }
2826
2827         /**
2828          * Show an error page saying to the user that he has insufficient permissions
2829          * to create a new page
2830          *
2831          * @deprecated in 1.19; throw an exception directly instead
2832          */
2833         function noCreatePermission() {
2834                 wfDeprecated( __METHOD__, '1.19' );
2835                 $permission = $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage';
2836                 throw new PermissionsError( $permission );
2837         }
2838
2839         /**
2840          * Creates a basic error page which informs the user that
2841          * they have attempted to edit a nonexistent section.
2842          */
2843         function noSuchSectionPage() {
2844                 global $wgOut;
2845
2846                 $wgOut->prepareErrorPage( wfMessage( 'nosuchsectiontitle' ) );
2847
2848                 $res = wfMsgExt( 'nosuchsectiontext', 'parse', $this->section );
2849                 wfRunHooks( 'EditPageNoSuchSection', array( &$this, &$res ) );
2850                 $wgOut->addHTML( $res );
2851
2852                 $wgOut->returnToMain( false, $this->mTitle );
2853         }
2854
2855         /**
2856          * Produce the stock "your edit contains spam" page
2857          *
2858          * @param $match Text which triggered one or more filters
2859          * @deprecated since 1.17 Use method spamPageWithContent() instead
2860          */
2861         static function spamPage( $match = false ) {
2862                 wfDeprecated( __METHOD__, '1.17' );
2863
2864                 global $wgOut, $wgTitle;
2865
2866                 $wgOut->prepareErrorPage( wfMessage( 'spamprotectiontitle' ) );
2867
2868                 $wgOut->addHTML( '<div id="spamprotected">' );
2869                 $wgOut->addWikiMsg( 'spamprotectiontext' );
2870                 if ( $match ) {
2871                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
2872                 }
2873                 $wgOut->addHTML( '</div>' );
2874
2875                 $wgOut->returnToMain( false, $wgTitle );
2876         }
2877
2878         /**
2879          * Show "your edit contains spam" page with your diff and text
2880          *
2881          * @param $match Text which triggered one or more filters
2882          */
2883         public function spamPageWithContent( $match = false ) {
2884                 global $wgOut;
2885                 $this->textbox2 = $this->textbox1;
2886
2887                 $wgOut->prepareErrorPage( wfMessage( 'spamprotectiontitle' ) );
2888
2889                 $wgOut->addHTML( '<div id="spamprotected">' );
2890                 $wgOut->addWikiMsg( 'spamprotectiontext' );
2891                 if ( $match ) {
2892                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
2893                 }
2894                 $wgOut->addHTML( '</div>' );
2895
2896                 $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
2897                 $de = new DifferenceEngine( $this->mArticle->getContext() );
2898                 $de->setText( $this->getContent(), $this->textbox2 );
2899                 $de->showDiff( wfMsg( "storedversion" ), wfMsgExt( 'yourtext', 'parseinline' ) );
2900
2901                 $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
2902                 $this->showTextbox2();
2903
2904                 $wgOut->addReturnTo( $this->getContextTitle(), array( 'action' => 'edit' ) );
2905         }
2906
2907         /**
2908          * Format an anchor fragment as it would appear for a given section name
2909          * @param $text String
2910          * @return String
2911          * @private
2912          */
2913         function sectionAnchor( $text ) {
2914                 global $wgParser;
2915                 return $wgParser->guessSectionNameFromWikiText( $text );
2916         }
2917
2918         /**
2919          * Check if the browser is on a blacklist of user-agents known to
2920          * mangle UTF-8 data on form submission. Returns true if Unicode
2921          * should make it through, false if it's known to be a problem.
2922          * @return bool
2923          * @private
2924          */
2925         function checkUnicodeCompliantBrowser() {
2926                 global $wgBrowserBlackList;
2927                 if ( empty( $_SERVER["HTTP_USER_AGENT"] ) ) {
2928                         // No User-Agent header sent? Trust it by default...
2929                         return true;
2930                 }
2931                 $currentbrowser = $_SERVER["HTTP_USER_AGENT"];
2932                 foreach ( $wgBrowserBlackList as $browser ) {
2933                         if ( preg_match($browser, $currentbrowser) ) {
2934                                 return false;
2935                         }
2936                 }
2937                 return true;
2938         }
2939
2940         /**
2941          * Filter an input field through a Unicode de-armoring process if it
2942          * came from an old browser with known broken Unicode editing issues.
2943          *
2944          * @param $request WebRequest
2945          * @param $field String
2946          * @return String
2947          * @private
2948          */
2949         function safeUnicodeInput( $request, $field ) {
2950                 $text = rtrim( $request->getText( $field ) );
2951                 return $request->getBool( 'safemode' )
2952                         ? $this->unmakesafe( $text )
2953                         : $text;
2954         }
2955
2956         /**
2957          * @param $request WebRequest
2958          * @param $text string
2959          * @return string
2960          */
2961         function safeUnicodeText( $request, $text ) {
2962                 $text = rtrim( $text );
2963                 return $request->getBool( 'safemode' )
2964                         ? $this->unmakesafe( $text )
2965                         : $text;
2966         }
2967
2968         /**
2969          * Filter an output field through a Unicode armoring process if it is
2970          * going to an old browser with known broken Unicode editing issues.
2971          *
2972          * @param $text String
2973          * @return String
2974          * @private
2975          */
2976         function safeUnicodeOutput( $text ) {
2977                 global $wgContLang;
2978                 $codedText = $wgContLang->recodeForEdit( $text );
2979                 return $this->checkUnicodeCompliantBrowser()
2980                         ? $codedText
2981                         : $this->makesafe( $codedText );
2982         }
2983
2984         /**
2985          * A number of web browsers are known to corrupt non-ASCII characters
2986          * in a UTF-8 text editing environment. To protect against this,
2987          * detected browsers will be served an armored version of the text,
2988          * with non-ASCII chars converted to numeric HTML character references.
2989          *
2990          * Preexisting such character references will have a 0 added to them
2991          * to ensure that round-trips do not alter the original data.
2992          *
2993          * @param $invalue String
2994          * @return String
2995          * @private
2996          */
2997         function makesafe( $invalue ) {
2998                 // Armor existing references for reversability.
2999                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
3000
3001                 $bytesleft = 0;
3002                 $result = "";
3003                 $working = 0;
3004                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
3005                         $bytevalue = ord( $invalue[$i] );
3006                         if ( $bytevalue <= 0x7F ) { //0xxx xxxx
3007                                 $result .= chr( $bytevalue );
3008                                 $bytesleft = 0;
3009                         } elseif ( $bytevalue <= 0xBF ) { //10xx xxxx
3010                                 $working = $working << 6;
3011                                 $working += ($bytevalue & 0x3F);
3012                                 $bytesleft--;
3013                                 if ( $bytesleft <= 0 ) {
3014                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
3015                                 }
3016                         } elseif ( $bytevalue <= 0xDF ) { //110x xxxx
3017                                 $working = $bytevalue & 0x1F;
3018                                 $bytesleft = 1;
3019                         } elseif ( $bytevalue <= 0xEF ) { //1110 xxxx
3020                                 $working = $bytevalue & 0x0F;
3021                                 $bytesleft = 2;
3022                         } else { //1111 0xxx
3023                                 $working = $bytevalue & 0x07;
3024                                 $bytesleft = 3;
3025                         }
3026                 }
3027                 return $result;
3028         }
3029
3030         /**
3031          * Reverse the previously applied transliteration of non-ASCII characters
3032          * back to UTF-8. Used to protect data from corruption by broken web browsers
3033          * as listed in $wgBrowserBlackList.
3034          *
3035          * @param $invalue String
3036          * @return String
3037          * @private
3038          */
3039         function unmakesafe( $invalue ) {
3040                 $result = "";
3041                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
3042                         if ( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue[$i+3] != '0' ) ) {
3043                                 $i += 3;
3044                                 $hexstring = "";
3045                                 do {
3046                                         $hexstring .= $invalue[$i];
3047                                         $i++;
3048                                 } while( ctype_xdigit( $invalue[$i] ) && ( $i < strlen( $invalue ) ) );
3049
3050                                 // Do some sanity checks. These aren't needed for reversability,
3051                                 // but should help keep the breakage down if the editor
3052                                 // breaks one of the entities whilst editing.
3053                                 if ( (substr($invalue,$i,1)==";") and (strlen($hexstring) <= 6) ) {
3054                                         $codepoint = hexdec($hexstring);
3055                                         $result .= codepointToUtf8( $codepoint );
3056                                 } else {
3057                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
3058                                 }
3059                         } else {
3060                                 $result .= substr( $invalue, $i, 1 );
3061                         }
3062                 }
3063                 // reverse the transform that we made for reversability reasons.
3064                 return strtr( $result, array( "&#x0" => "&#x" ) );
3065         }
3066 }