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
  24         /**
  25          * Status: Article successfully updated
  26          */
  27         const AS_SUCCESS_UPDATE            = 200;
  28
  29         /**
  30          * Status: Article successfully created
  31          */
  32         const AS_SUCCESS_NEW_ARTICLE       = 201;
  33
  34         /**
  35          * Status: Article update aborted by a hook function
  36          */
  37         const AS_HOOK_ERROR                = 210;
  38
  39         /**
  40          * Status: The filter function set in $wgFilterCallback returned true (= block it)
  41          */
  42         const AS_FILTERING                 = 211;
  43
  44         /**
  45          * Status: A hook function returned an error
  46          */
  47         const AS_HOOK_ERROR_EXPECTED       = 212;
  48
  49         /**
  50          * Status: User is blocked from editting this page
  51          */
  52         const AS_BLOCKED_PAGE_FOR_USER     = 215;
  53
  54         /**
  55          * Status: Content too big (> $wgMaxArticleSize)
  56          */
  57         const AS_CONTENT_TOO_BIG           = 216;
  58
  59         /**
  60          * Status: User cannot edit? (not used)
  61          */
  62         const AS_USER_CANNOT_EDIT          = 217;
  63
  64         /**
  65          * Status: this anonymous user is not allowed to edit this page
  66          */
  67         const AS_READ_ONLY_PAGE_ANON       = 218;
  68
  69         /**
  70          * Status: this logged in user is not allowed to edit this page
  71          */
  72         const AS_READ_ONLY_PAGE_LOGGED     = 219;
  73
  74         /**
  75          * Status: wiki is in readonly mode (wfReadOnly() == true)
  76          */
  77         const AS_READ_ONLY_PAGE            = 220;
  78
  79         /**
  80          * Status: rate limiter for action 'edit' was tripped
  81          */
  82         const AS_RATE_LIMITED              = 221;
  83
  84         /**
  85          * Status: article was deleted while editting and param wpRecreate == false or form
  86          * was not posted
  87          */
  88         const AS_ARTICLE_WAS_DELETED       = 222;
  89
  90         /**
  91          * Status: user tried to create this page, but is not allowed to do that
  92          * ( Title->usercan('create') == false )
  93          */
  94         const AS_NO_CREATE_PERMISSION      = 223;
  95
  96         /**
  97          * Status: user tried to create a blank page
  98          */
  99         const AS_BLANK_ARTICLE             = 224;
 100
 101         /**
 102          * Status: (non-resolvable) edit conflict
 103          */
 104         const AS_CONFLICT_DETECTED         = 225;
 105
 106         /**
 107          * Status: no edit summary given and the user has forceeditsummary set and the user is not
 108          * editting in his own userspace or talkspace and wpIgnoreBlankSummary == false
 109          */
 110         const AS_SUMMARY_NEEDED            = 226;
 111
 112         /**
 113          * Status: user tried to create a new section without content
 114          */
 115         const AS_TEXTBOX_EMPTY             = 228;
 116
 117         /**
 118          * Status: article is too big (> $wgMaxArticleSize), after merging in the new section
 119          */
 120         const AS_MAX_ARTICLE_SIZE_EXCEEDED = 229;
 121
 122         /**
 123          * not used
 124          */
 125         const AS_OK                        = 230;
 126
 127         /**
 128          * Status: WikiPage::doEdit() was unsuccessfull
 129          */
 130         const AS_END                       = 231;
 131
 132         /**
 133          * Status: summary contained spam according to one of the regexes in $wgSummarySpamRegex
 134          */
 135         const AS_SPAM_ERROR                = 232;
 136
 137         /**
 138          * Status: anonymous user is not allowed to upload (User::isAllowed('upload') == false)
 139          */
 140         const AS_IMAGE_REDIRECT_ANON       = 233;
 141
 142         /**
 143          * Status: logged in user is not allowed to upload (User::isAllowed('upload') == false)
 144          */
 145         const AS_IMAGE_REDIRECT_LOGGED     = 234;
 146
 147         /**
 148          * Status: can't parse content
 149          */
 150         const AS_PARSE_ERROR                = 240;
 151
 152         /**
 153          * @var Article
 154          */
 155         var $mArticle;
 156
 157         /**
 158          * @var Title
 159          */
 160         var $mTitle;
 161         private $mContextTitle = null;
 162         var $action = 'submit';
 163         var $isConflict = false;
 164         var $isCssJsSubpage = false;
 165         var $isCssSubpage = false;
 166         var $isJsSubpage = false;
 167         var $isWrongCaseCssJsPage = false;
 168         var $isNew = false; // new page or new section
 169         var $deletedSinceEdit;
 170         var $formtype;
 171         var $firsttime;
 172         var $lastDelete;
 173         var $mTokenOk = false;
 174         var $mTokenOkExceptSuffix = false;
 175         var $mTriedSave = false;
 176         var $incompleteForm = false;
 177         var $tooBig = false;
 178         var $kblength = false;
 179         var $missingComment = false;
 180         var $missingSummary = false;
 181         var $allowBlankSummary = false;
 182         var $autoSumm = '';
 183         var $hookError = '';
 184         #var $mPreviewTemplates;
 185
 186         /**
 187          * @var ParserOutput
 188          */
 189         var $mParserOutput;
 190
 191         /**
 192          * Has a summary been preset using GET parameter &summary= ?
 193          * @var Bool
 194          */
 195         var $hasPresetSummary = false;
 196
 197         var $mBaseRevision = false;
 198         var $mShowSummaryField = true;
 199
 200         # Form values
 201         var $save = false, $preview = false, $diff = false;
 202         var $minoredit = false, $watchthis = false, $recreate = false;
 203         var $textbox1 = '', $textbox2 = '', $summary = '', $nosummary = false;
 204         var $edittime = '', $section = '', $sectiontitle = '', $starttime = '';
 205         var $oldid = 0, $editintro = '', $scrolltop = null, $bot = true;
 206         var $content_model = null, $content_format = null;
 207
 208         # Placeholders for text injection by hooks (must be HTML)
 209         # extensions should take care to _append_ to the present value
 210         public $editFormPageTop = ''; // Before even the preview
 211         public $editFormTextTop = '';
 212         public $editFormTextBeforeContent = '';
 213         public $editFormTextAfterWarn = '';
 214         public $editFormTextAfterTools = '';
 215         public $editFormTextBottom = '';
 216         public $editFormTextAfterContent = '';
 217         public $previewTextAfterContent = '';
 218         public $mPreloadContent = null;
 219
 220         /* $didSave should be set to true whenever an article was succesfully altered. */
 221         public $didSave = false;
 222         public $undidRev = 0;
 223
 224         public $suppressIntro = false;
 225
 226         /**
 227          * @param $article Article
 228          */
 229         public function __construct( Article $article ) {
 230                 $this->mArticle = $article;
 231                 $this->mTitle = $article->getTitle();
 232
 233                 $this->content_model = $this->mTitle->getContentModelName();
 234
 235                 $handler = ContentHandler::getForModelName( $this->content_model );
 236                 $this->content_format = $handler->getDefaultFormat(); #NOTE: should be overridden by format of actual revision
 237         }
 238
 239         /**
 240          * @return Article
 241          */
 242         public function getArticle() {
 243                 return $this->mArticle;
 244         }
 245
 246         /**
 247          * @since 1.19
 248          * @return Title
 249          */
 250         public function getTitle() {
 251                 return $this->mTitle;
 252         }
 253
 254         /**
 255          * Set the context Title object
 256          *
 257          * @param $title Title object or null
 258          */
 259         public function setContextTitle( $title ) {
 260                 $this->mContextTitle = $title;
 261         }
 262
 263         /**
 264          * Get the context title object.
 265          * If not set, $wgTitle will be returned. This behavior might changed in
 266          * the future to return $this->mTitle instead.
 267          *
 268          * @return Title object
 269          */
 270         public function getContextTitle() {
 271                 if ( is_null( $this->mContextTitle ) ) {
 272                         global $wgTitle;
 273                         return $wgTitle;
 274                 } else {
 275                         return $this->mContextTitle;
 276                 }
 277         }
 278
 279         function submit() {
 280                 $this->edit();
 281         }
 282
 283         /**
 284          * This is the function that gets called for "action=edit". It
 285          * sets up various member variables, then passes execution to
 286          * another function, usually showEditForm()
 287          *
 288          * The edit form is self-submitting, so that when things like
 289          * preview and edit conflicts occur, we get the same form back
 290          * with the extra stuff added.  Only when the final submission
 291          * is made and all is well do we actually save and redirect to
 292          * the newly-edited page.
 293          */
 294         function edit() {
 295                 global $wgOut, $wgRequest, $wgUser;
 296                 // Allow extensions to modify/prevent this form or submission
 297                 if ( !wfRunHooks( 'AlternateEdit', array( $this ) ) ) {
 298                         return;
 299                 }
 300
 301                 wfProfileIn( __METHOD__ );
 302                 wfDebug( __METHOD__ . ": enter\n" );
 303
 304                 // If they used redlink=1 and the page exists, redirect to the main article
 305                 if ( $wgRequest->getBool( 'redlink' ) && $this->mTitle->exists() ) {
 306                         $wgOut->redirect( $this->mTitle->getFullURL() );
 307                         wfProfileOut( __METHOD__ );
 308                         return;
 309                 }
 310
 311                 $this->importFormData( $wgRequest );
 312                 $this->firsttime = false;
 313
 314                 if ( $this->live ) {
 315                         $this->livePreview();
 316                         wfProfileOut( __METHOD__ );
 317                         return;
 318                 }
 319
 320                 if ( wfReadOnly() && $this->save ) {
 321                         // Force preview
 322                         $this->save = false;
 323                         $this->preview = true;
 324                 }
 325
 326                 if ( $this->save ) {
 327                         $this->formtype = 'save';
 328                 } elseif ( $this->preview ) {
 329                         $this->formtype = 'preview';
 330                 } elseif ( $this->diff ) {
 331                         $this->formtype = 'diff';
 332                 } else { # First time through
 333                         $this->firsttime = true;
 334                         if ( $this->previewOnOpen() ) {
 335                                 $this->formtype = 'preview';
 336                         } else {
 337                                 $this->formtype = 'initial';
 338                         }
 339                 }
 340
 341                 $permErrors = $this->getEditPermissionErrors();
 342                 if ( $permErrors ) {
 343                         wfDebug( __METHOD__ . ": User can't edit\n" );
 344                         // Auto-block user's IP if the account was "hard" blocked
 345                         $wgUser->spreadAnyEditBlock();
 346
 347                         $this->displayPermissionsError( $permErrors );
 348
 349                         wfProfileOut( __METHOD__ );
 350                         return;
 351                 }
 352
 353                 wfProfileIn( __METHOD__ . "-business-end" );
 354
 355                 $this->isConflict = false;
 356                 // css / js subpages of user pages get a special treatment
 357                 $this->isCssJsSubpage       = $this->mTitle->isCssJsSubpage();
 358                 $this->isCssSubpage         = $this->mTitle->isCssSubpage();
 359                 $this->isJsSubpage          = $this->mTitle->isJsSubpage();
 360                 $this->isWrongCaseCssJsPage = $this->isWrongCaseCssJsPage();
 361                 $this->isNew                = !$this->mTitle->exists() || $this->section == 'new';
 362
 363                 # Show applicable editing introductions
 364                 if ( $this->formtype == 'initial' || $this->firsttime ) {
 365                         $this->showIntro();
 366                 }
 367
 368                 # Attempt submission here.  This will check for edit conflicts,
 369                 # and redundantly check for locked database, blocked IPs, etc.
 370                 # that edit() already checked just in case someone tries to sneak
 371                 # in the back door with a hand-edited submission URL.
 372
 373                 if ( 'save' == $this->formtype ) {
 374                         if ( !$this->attemptSave() ) {
 375                                 wfProfileOut( __METHOD__ . "-business-end" );
 376                                 wfProfileOut( __METHOD__ );
 377                                 return;
 378                         }
 379                 }
 380
 381                 # First time through: get contents, set time for conflict
 382                 # checking, etc.
 383                 if ( 'initial' == $this->formtype || $this->firsttime ) {
 384                         if ( $this->initialiseForm() === false ) {
 385                                 $this->noSuchSectionPage();
 386                                 wfProfileOut( __METHOD__ . "-business-end" );
 387                                 wfProfileOut( __METHOD__ );
 388                                 return;
 389                         }
 390                         if ( !$this->mTitle->getArticleID() )
 391                                 wfRunHooks( 'EditFormPreloadText', array( &$this->textbox1, &$this->mTitle ) );
 392                         else
 393                                 wfRunHooks( 'EditFormInitialText', array( $this ) );
 394                 }
 395
 396                 $this->showEditForm();
 397                 wfProfileOut( __METHOD__ . "-business-end" );
 398                 wfProfileOut( __METHOD__ );
 399         }
 400
 401         /**
 402          * @return array
 403          */
 404         protected function getEditPermissionErrors() {
 405                 global $wgUser;
 406                 $permErrors = $this->mTitle->getUserPermissionsErrors( 'edit', $wgUser );
 407                 # Can this title be created?
 408                 if ( !$this->mTitle->exists() ) {
 409                         $permErrors = array_merge( $permErrors,
 410                                 wfArrayDiff2( $this->mTitle->getUserPermissionsErrors( 'create', $wgUser ), $permErrors ) );
 411                 }
 412                 # Ignore some permissions errors when a user is just previewing/viewing diffs
 413                 $remove = array();
 414                 foreach ( $permErrors as $error ) {
 415                         if ( ( $this->preview || $this->diff ) &&
 416                                 ( $error[0] == 'blockedtext' || $error[0] == 'autoblockedtext' ) )
 417                         {
 418                                 $remove[] = $error;
 419                         }
 420                 }
 421                 $permErrors = wfArrayDiff2( $permErrors, $remove );
 422                 return $permErrors;
 423         }
 424
 425         /**
 426          * Display a permissions error page, like OutputPage::showPermissionsErrorPage(),
 427          * but with the following differences:
 428          * - If redlink=1, the user will be redirected to the page
 429          * - If there is content to display or the error occurs while either saving,
 430          *   previewing or showing the difference, it will be a
 431          *   "View source for ..." page displaying the source code after the error message.
 432          *
 433          * @since 1.19
 434          * @param $permErrors Array of permissions errors, as returned by
 435          *                    Title::getUserPermissionsErrors().
 436          */
 437         protected function displayPermissionsError( array $permErrors ) {
 438                 global $wgRequest, $wgOut;
 439
 440                 if ( $wgRequest->getBool( 'redlink' ) ) {
 441                         // The edit page was reached via a red link.
 442                         // Redirect to the article page and let them click the edit tab if
 443                         // they really want a permission error.
 444                         $wgOut->redirect( $this->mTitle->getFullUrl() );
 445                         return;
 446                 }
 447
 448                 $content = $this->getContentObject();
 449
 450                 # Use the normal message if there's nothing to display
 451                 if ( $this->firsttime && $content->isEmpty() ) {
 452                         $action = $this->mTitle->exists() ? 'edit' :
 453                                 ( $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage' );
 454                         throw new PermissionsError( $action, $permErrors );
 455                 }
 456
 457                 $wgOut->setPageTitle( wfMessage( 'viewsource-title', $this->getContextTitle()->getPrefixedText() ) );
 458                 $wgOut->addBacklinkSubtitle( $this->getContextTitle() );
 459                 $wgOut->addWikiText( $wgOut->formatPermissionsErrorMessage( $permErrors, 'edit' ) );
 460                 $wgOut->addHTML( "<hr />\n" );
 461
 462                 # If the user made changes, preserve them when showing the markup
 463                 # (This happens when a user is blocked during edit, for instance)
 464                 if ( !$this->firsttime ) {
 465                         $text = $this->textbox1;
 466                         $wgOut->addWikiMsg( 'viewyourtext' );
 467                 } else {
 468                         $text = $content->serialize( $this->content_format );
 469                         $wgOut->addWikiMsg( 'viewsourcetext' );
 470                 }
 471
 472                 $this->showTextbox( $text, 'wpTextbox1', array( 'readonly' ) );
 473
 474                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'templatesUsed' ),
 475                         Linker::formatTemplates( $this->getTemplates() ) ) );
 476
 477                 if ( $this->mTitle->exists() ) {
 478                         $wgOut->returnToMain( null, $this->mTitle );
 479                 }
 480         }
 481
 482         /**
 483          * Show a read-only error
 484          * Parameters are the same as OutputPage:readOnlyPage()
 485          * Redirect to the article page if redlink=1
 486          * @deprecated in 1.19; use displayPermissionsError() instead
 487          */
 488         function readOnlyPage( $source = null, $protected = false, $reasons = array(), $action = null ) {
 489                 wfDeprecated( __METHOD__, '1.19' );
 490
 491                 global $wgRequest, $wgOut;
 492                 if ( $wgRequest->getBool( 'redlink' ) ) {
 493                         // The edit page was reached via a red link.
 494                         // Redirect to the article page and let them click the edit tab if
 495                         // they really want a permission error.
 496                         $wgOut->redirect( $this->mTitle->getFullUrl() );
 497                 } else {
 498                         $wgOut->readOnlyPage( $source, $protected, $reasons, $action );
 499                 }
 500         }
 501
 502         /**
 503          * Should we show a preview when the edit form is first shown?
 504          *
 505          * @return bool
 506          */
 507         protected function previewOnOpen() {
 508                 global $wgRequest, $wgUser, $wgPreviewOnOpenNamespaces;
 509                 if ( $wgRequest->getVal( 'preview' ) == 'yes' ) {
 510                         // Explicit override from request
 511                         return true;
 512                 } elseif ( $wgRequest->getVal( 'preview' ) == 'no' ) {
 513                         // Explicit override from request
 514                         return false;
 515                 } elseif ( $this->section == 'new' ) {
 516                         // Nothing *to* preview for new sections
 517                         return false;
 518                 } elseif ( ( $wgRequest->getVal( 'preload' ) !== null || $this->mTitle->exists() ) && $wgUser->getOption( 'previewonfirst' ) ) {
 519                         // Standard preference behaviour
 520                         return true;
 521                 } elseif ( !$this->mTitle->exists() &&
 522                   isset( $wgPreviewOnOpenNamespaces[$this->mTitle->getNamespace()] ) &&
 523                   $wgPreviewOnOpenNamespaces[$this->mTitle->getNamespace()] )
 524                 {
 525                         // Categories are special
 526                         return true;
 527                 } else {
 528                         return false;
 529                 }
 530         }
 531
 532         /**
 533          * Checks whether the user entered a skin name in uppercase,
 534          * e.g. "User:Example/Monobook.css" instead of "monobook.css"
 535          *
 536          * @return bool
 537          */
 538         protected function isWrongCaseCssJsPage() {
 539                 if ( $this->mTitle->isCssJsSubpage() ) {
 540                         $name = $this->mTitle->getSkinFromCssJsSubpage();
 541                         $skins = array_merge(
 542                                 array_keys( Skin::getSkinNames() ),
 543                                 array( 'common' )
 544                         );
 545                         return !in_array( $name, $skins )
 546                                 && in_array( strtolower( $name ), $skins );
 547                 } else {
 548                         return false;
 549                 }
 550         }
 551
 552         /**
 553          * Does this EditPage class support section editing?
 554          * This is used by EditPage subclasses to indicate their ui cannot handle section edits
 555          *
 556          * @return bool
 557          */
 558         protected function isSectionEditSupported() {
 559                 return true;
 560         }
 561
 562         /**
 563          * This function collects the form data and uses it to populate various member variables.
 564          * @param $request WebRequest
 565          */
 566         function importFormData( &$request ) {
 567                 global $wgLang, $wgUser;
 568
 569                 wfProfileIn( __METHOD__ );
 570
 571                 # Section edit can come from either the form or a link
 572                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 573
 574                 if ( $request->wasPosted() ) {
 575                         # These fields need to be checked for encoding.
 576                         # Also remove trailing whitespace, but don't remove _initial_
 577                         # whitespace from the text boxes. This may be significant formatting.
 578                         $this->textbox1 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
 579                         if ( !$request->getCheck( 'wpTextbox2' ) ) {
 580                                 // Skip this if wpTextbox2 has input, it indicates that we came
 581                                 // from a conflict page with raw page text, not a custom form
 582                                 // modified by subclasses
 583                                 wfProfileIn( get_class( $this ) . "::importContentFormData" );
 584                                 $textbox1 = $this->importContentFormData( $request );
 585                                 if ( isset( $textbox1 ) )
 586                                         $this->textbox1 = $textbox1;
 587                                 wfProfileOut( get_class( $this ) . "::importContentFormData" );
 588                         }
 589
 590                         # Truncate for whole multibyte characters. +5 bytes for ellipsis
 591                         $this->summary = $wgLang->truncate( $request->getText( 'wpSummary' ), 250 );
 592
 593                         # If the summary consists of a heading, e.g. '==Foobar==', extract the title from the
 594                         # header syntax, e.g. 'Foobar'. This is mainly an issue when we are using wpSummary for
 595                         # section titles.
 596                         $this->summary = preg_replace( '/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->summary );
 597
 598                         # Treat sectiontitle the same way as summary.
 599                         # Note that wpSectionTitle is not yet a part of the actual edit form, as wpSummary is
 600                         # currently doing double duty as both edit summary and section title. Right now this
 601                         # is just to allow API edits to work around this limitation, but this should be
 602                         # incorporated into the actual edit form when EditPage is rewritten (Bugs 18654, 26312).
 603                         $this->sectiontitle = $wgLang->truncate( $request->getText( 'wpSectionTitle' ), 250 );
 604                         $this->sectiontitle = preg_replace( '/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->sectiontitle );
 605
 606                         $this->edittime = $request->getVal( 'wpEdittime' );
 607                         $this->starttime = $request->getVal( 'wpStarttime' );
 608
 609                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 610
 611                         if ( $this->textbox1 === '' && $request->getVal( 'wpTextbox1' ) === null ) {
 612                                 // wpTextbox1 field is missing, possibly due to being "too big"
 613                                 // according to some filter rules such as Suhosin's setting for
 614                                 // suhosin.request.max_value_length (d'oh)
 615                                 $this->incompleteForm = true;
 616                         } else {
 617                                 // edittime should be one of our last fields; if it's missing,
 618                                 // the submission probably broke somewhere in the middle.
 619                                 $this->incompleteForm = is_null( $this->edittime );
 620                         }
 621                         if ( $this->incompleteForm ) {
 622                                 # If the form is incomplete, force to preview.
 623                                 wfDebug( __METHOD__ . ": Form data appears to be incomplete\n" );
 624                                 wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
 625                                 $this->preview = true;
 626                         } else {
 627                                 /* Fallback for live preview */
 628                                 $this->preview = $request->getCheck( 'wpPreview' ) || $request->getCheck( 'wpLivePreview' );
 629                                 $this->diff = $request->getCheck( 'wpDiff' );
 630
 631                                 // Remember whether a save was requested, so we can indicate
 632                                 // if we forced preview due to session failure.
 633                                 $this->mTriedSave = !$this->preview;
 634
 635                                 if ( $this->tokenOk( $request ) ) {
 636                                         # Some browsers will not report any submit button
 637                                         # if the user hits enter in the comment box.
 638                                         # The unmarked state will be assumed to be a save,
 639                                         # if the form seems otherwise complete.
 640                                         wfDebug( __METHOD__ . ": Passed token check.\n" );
 641                                 } elseif ( $this->diff ) {
 642                                         # Failed token check, but only requested "Show Changes".
 643                                         wfDebug( __METHOD__ . ": Failed token check; Show Changes requested.\n" );
 644                                 } else {
 645                                         # Page might be a hack attempt posted from
 646                                         # an external site. Preview instead of saving.
 647                                         wfDebug( __METHOD__ . ": Failed token check; forcing preview\n" );
 648                                         $this->preview = true;
 649                                 }
 650                         }
 651                         $this->save = !$this->preview && !$this->diff;
 652                         if ( !preg_match( '/^\d{14}$/', $this->edittime ) ) {
 653                                 $this->edittime = null;
 654                         }
 655
 656                         if ( !preg_match( '/^\d{14}$/', $this->starttime ) ) {
 657                                 $this->starttime = null;
 658                         }
 659
 660                         $this->recreate  = $request->getCheck( 'wpRecreate' );
 661
 662                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 663                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 664
 665                         # Don't force edit summaries when a user is editing their own user or talk page
 666                         if ( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK ) &&
 667                                 $this->mTitle->getText() == $wgUser->getName() )
 668                         {
 669                                 $this->allowBlankSummary = true;
 670                         } else {
 671                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' ) || !$wgUser->getOption( 'forceeditsummary' );
 672                         }
 673
 674                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
 675                 } else {
 676                         # Not a posted form? Start with nothing.
 677                         wfDebug( __METHOD__ . ": Not a posted form.\n" );
 678                         $this->textbox1     = ''; #FIXME: track content object
 679                         $this->summary      = '';
 680                         $this->sectiontitle = '';
 681                         $this->edittime     = '';
 682                         $this->starttime    = wfTimestampNow();
 683                         $this->edit         = false;
 684                         $this->preview      = false;
 685                         $this->save         = false;
 686                         $this->diff         = false;
 687                         $this->minoredit    = false;
 688                         $this->watchthis    = $request->getBool( 'watchthis', false ); // Watch may be overriden by request parameters
 689                         $this->recreate     = false;
 690
 691                         // When creating a new section, we can preload a section title by passing it as the
 692                         // preloadtitle parameter in the URL (Bug 13100)
 693                         if ( $this->section == 'new' && $request->getVal( 'preloadtitle' ) ) {
 694                                 $this->sectiontitle = $request->getVal( 'preloadtitle' );
 695                                 // Once wpSummary isn't being use for setting section titles, we should delete this.
 696                                 $this->summary = $request->getVal( 'preloadtitle' );
 697                         }
 698                         elseif ( $this->section != 'new' && $request->getVal( 'summary' ) ) {
 699                                 $this->summary = $request->getText( 'summary' );
 700                                 if ( $this->summary !== '' ) {
 701                                         $this->hasPresetSummary = true;
 702                                 }
 703                         }
 704
 705                         if ( $request->getVal( 'minor' ) ) {
 706                                 $this->minoredit = true;
 707                         }
 708                 }
 709
 710                 $this->oldid = $request->getInt( 'oldid' );
 711
 712                 $this->bot = $request->getBool( 'bot', true );
 713                 $this->nosummary = $request->getBool( 'nosummary' );
 714
 715                 $content_handler = ContentHandler::getForTitle( $this->mTitle );
 716                 $this->content_model = $request->getText( 'model', $content_handler->getModelName() ); #may be overridden by revision
 717                 $this->content_format = $request->getText( 'format', $content_handler->getDefaultFormat() ); #may be overridden by revision
 718
 719                 #TODO: check if the desired model is allowed in this namespace, and if a transition from the page's current model to the new model is allowed
 720                 #TODO: check if the desired content model supports the given content format!
 721
 722                 $this->live = $request->getCheck( 'live' );
 723                 $this->editintro = $request->getText( 'editintro',
 724                         // Custom edit intro for new sections
 725                         $this->section === 'new' ? 'MediaWiki:addsection-editintro' : '' );
 726
 727                 // Allow extensions to modify form data
 728                 wfRunHooks( 'EditPage::importFormData', array( $this, $request ) );
 729
 730                 wfProfileOut( __METHOD__ );
 731         }
 732
 733         /**
 734          * Subpage overridable method for extracting the page content data from the
 735          * posted form to be placed in $this->textbox1, if using customized input
 736          * this method should be overrided and return the page text that will be used
 737          * for saving, preview parsing and so on...
 738          *
 739          * @param $request WebRequest
 740          */
 741         protected function importContentFormData( &$request ) {
 742                 return; // Don't do anything, EditPage already extracted wpTextbox1
 743         }
 744
 745         /**
 746          * Initialise form fields in the object
 747          * Called on the first invocation, e.g. when a user clicks an edit link
 748          * @return bool -- if the requested section is valid
 749          */
 750         function initialiseForm() {
 751                 global $wgUser;
 752                 $this->edittime = $this->mArticle->getTimestamp();
 753
 754                 $content = $this->getContentObject( false ); #TODO: track content object?!
 755                 $this->textbox1 = $content->serialize( $this->content_format );
 756
 757                 // activate checkboxes if user wants them to be always active
 758                 # Sort out the "watch" checkbox
 759                 if ( $wgUser->getOption( 'watchdefault' ) ) {
 760                         # Watch all edits
 761                         $this->watchthis = true;
 762                 } elseif ( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
 763                         # Watch creations
 764                         $this->watchthis = true;
 765                 } elseif ( $this->mTitle->userIsWatching() ) {
 766                         # Already watched
 767                         $this->watchthis = true;
 768                 }
 769                 if ( $wgUser->getOption( 'minordefault' ) && !$this->isNew ) {
 770                         $this->minoredit = true;
 771                 }
 772                 if ( $this->textbox1 === false ) {
 773                         return false;
 774                 }
 775                 wfProxyCheck();
 776                 return true;
 777         }
 778
 779         /**
 780          * Fetch initial editing page content.
 781          *
 782          * @param $def_text string
 783          * @return mixed string on success, $def_text for invalid sections
 784          * @private
 785          * @deprecated since 1.20
 786          */
 787         function getContent( $def_text = false ) { #FIXME: deprecated, replace usage!
 788                 if ( $def_text !== null && $def_text !== false && $def_text !== '' ) {
 789                         $def_content = ContentHandler::makeContent( $def_text, $this->getTitle() );
 790                 } else {
 791                         $def_content = false;
 792                 }
 793
 794                 $content = $this->getContentObject( $def_content );
 795
 796                 return $content->serialize( $this->content_format ); #XXX: really use serialized form? use ContentHandler::getContentText() instead?
 797         }
 798
 799         private function getContentObject( $def_content = null ) { #FIXME: use this!
 800                 global $wgOut, $wgRequest;
 801
 802                 wfProfileIn( __METHOD__ );
 803
 804                 $content = false;
 805
 806                 // For message page not locally set, use the i18n message.
 807                 // For other non-existent articles, use preload text if any.
 808                 if ( !$this->mTitle->exists() || $this->section == 'new' ) {
 809                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI && $this->section != 'new' ) {
 810                                 # If this is a system message, get the default text.
 811                                 $msg = $this->mTitle->getDefaultMessageText();
 812
 813                                 $content = new WikitextContent($msg); //XXX: really hardcode wikitext here?
 814                         }
 815                         if ( $content === false ) {
 816                                 # If requested, preload some text.
 817                                 $preload = $wgRequest->getVal( 'preload',
 818                                         // Custom preload text for new sections
 819                                         $this->section === 'new' ? 'MediaWiki:addsection-preload' : '' );
 820
 821                                 $content = $this->getPreloadedContent( $preload );
 822                         }
 823                 // For existing pages, get text based on "undo" or section parameters.
 824                 } else {
 825                         if ( $this->section != '' ) {
 826                                 // Get section edit text (returns $def_text for invalid sections)
 827                                 $orig = $this->getOriginalContent();
 828                                 $content = $orig ? $orig->getSection( $this->section ) : null;
 829
 830                                 if ( !$content ) $content = $def_content;
 831                         } else {
 832                                 $undoafter = $wgRequest->getInt( 'undoafter' );
 833                                 $undo = $wgRequest->getInt( 'undo' );
 834
 835                                 if ( $undo > 0 && $undoafter > 0 ) {
 836                                         if ( $undo < $undoafter ) {
 837                                                 # If they got undoafter and undo round the wrong way, switch them
 838                                                 list( $undo, $undoafter ) = array( $undoafter, $undo );
 839                                         }
 840
 841                                         $undorev = Revision::newFromId( $undo );
 842                                         $oldrev = Revision::newFromId( $undoafter );
 843
 844                                         # Sanity check, make sure it's the right page,
 845                                         # the revisions exist and they were not deleted.
 846                                         # Otherwise, $content will be left as-is.
 847                                         if ( !is_null( $undorev ) && !is_null( $oldrev ) &&
 848                                                 $undorev->getPage() == $oldrev->getPage() &&
 849                                                 $undorev->getPage() == $this->mTitle->getArticleID() &&
 850                                                 !$undorev->isDeleted( Revision::DELETED_TEXT ) &&
 851                                                 !$oldrev->isDeleted( Revision::DELETED_TEXT ) ) {
 852
 853                         $content = $this->mArticle->getUndoContent( $undorev, $oldrev );
 854
 855                                                 if ( $content === false ) {
 856                                                         # Warn the user that something went wrong
 857                                                         $undoMsg = 'failure';
 858                                                 } else {
 859                                                         # Inform the user of our success and set an automatic edit summary
 860                                                         $undoMsg = 'success';
 861
 862                                                         # If we just undid one rev, use an autosummary
 863                                                         $firstrev = $oldrev->getNext();
 864                                                         if ( $firstrev->getId() == $undo ) {
 865                                                                 $undoSummary = wfMsgForContent( 'undo-summary', $undo, $undorev->getUserText() );
 866                                                                 if ( $this->summary === '' ) {
 867                                                                         $this->summary = $undoSummary;
 868                                                                 } else {
 869                                                                         $this->summary = $undoSummary . wfMsgForContent( 'colon-separator' ) . $this->summary;
 870                                                                 }
 871                                                                 $this->undidRev = $undo;
 872                                                         }
 873                                                         $this->formtype = 'diff';
 874                                                 }
 875                                         } else {
 876                                                 // Failed basic sanity checks.
 877                                                 // Older revisions may have been removed since the link
 878                                                 // was created, or we may simply have got bogus input.
 879                                                 $undoMsg = 'norev';
 880                                         }
 881
 882                                         $class = ( $undoMsg == 'success' ? '' : 'error ' ) . "mw-undo-{$undoMsg}";
 883                                         $this->editFormPageTop .= $wgOut->parse( "<div class=\"{$class}\">" .
 884                                                 wfMsgNoTrans( 'undo-' . $undoMsg ) . '</div>', true, /* interface */true );
 885                                 }
 886
 887                                 if ( $content === false ) {
 888                                         $content = $this->getOriginalContent();
 889                                 }
 890                         }
 891                 }
 892
 893                 wfProfileOut( __METHOD__ );
 894                 return $content;
 895         }
 896
 897         /**
 898          * Get the content of the wanted revision, without section extraction.
 899          *
 900          * The result of this function can be used to compare user's input with
 901          * section replaced in its context (using WikiPage::replaceSection())
 902          * to the original text of the edit.
 903          *
 904          * This difers from Article::getContent() that when a missing revision is
 905          * encountered the result will be an empty string and not the
 906          * 'missing-article' message.
 907          *
 908          * @since 1.19
 909          * @return string
 910          */
 911         private function getOriginalContent() {
 912                 if ( $this->section == 'new' ) {
 913                         return $this->getCurrentContent();
 914                 }
 915                 $revision = $this->mArticle->getRevisionFetched();
 916                 if ( $revision === null ) {
 917                         if ( !$this->content_model ) $this->content_model = $this->getTitle()->getContentModelName();
 918                         $handler = ContentHandler::getForModelName( $this->content_model );
 919
 920                         return $handler->makeEmptyContent();
 921                 }
 922         $content = $revision->getContent();
 923                 return $content;
 924         }
 925
 926     /**
 927      * Get the current content of the page. This is basically similar to
 928      * WikiPage::getContent( Revision::RAW ) except that when the page doesn't exist an empty
 929      * content object is returned instead of null.
 930      *
 931      * @since 1.20
 932      * @return string
 933      */
 934     private function getCurrentContent() {
 935         $rev = $this->mArticle->getRevision();
 936         $content = $rev ? $rev->getContent( Revision::RAW ) : null;
 937
 938         if ( $content  === false || $content === null ) {
 939             if ( !$this->content_model ) $this->content_model = $this->getTitle()->getContentModelName();
 940             $handler = ContentHandler::getForModelName( $this->content_model );
 941
 942             return $handler->makeEmptyContent();
 943         } else {
 944             #FIXME: nasty side-effect!
 945             $this->content_model = $rev->getContentModelName();
 946             $this->content_format = $rev->getContentFormat();
 947
 948             return $content;
 949         }
 950     }
 951
 952
 953     /**
 954      * Use this method before edit() to preload some text into the edit box
 955      *
 956      * @param $text string
 957      * @deprecated since 1.20
 958      */
 959     public function setPreloadedText( $text ) { #FIXME: deprecated, use setPreloadedContent()
 960         wfDeprecated( __METHOD__, "1.20" );
 961
 962         $content = ContentHandler::makeContent( $text, $this->getTitle() );
 963
 964         $this->setPreloadedContent( $content );
 965     }
 966
 967     /**
 968      * Use this method before edit() to preload some content into the edit box
 969      *
 970      * @param $content Content
 971      */
 972     public function setPreloadedContent( Content $content ) { #FIXME: use this!
 973         $this->mPreloadedContent = $content;
 974     }
 975
 976     /**
 977      * Get the contents to be preloaded into the box, either set by
 978      * an earlier setPreloadText() or by loading the given page.
 979      *
 980      * @param $preload String: representing the title to preload from.
 981      * @return String
 982      * @deprecated since 1.20
 983      */
 984     protected function getPreloadedText( $preload ) { #FIXME: B/C only, replace usage!
 985         wfDeprecated( __METHOD__, "1.20" );
 986
 987         $content = $this->getPreloadedContent( $preload );
 988         $text = $content->serialize( $this->content_format ); #XXX: really use serialized form? use ContentHandler::getContentText() instead?!
 989
 990         return $text;
 991     }
 992
 993     protected function getPreloadedContent( $preload ) { #FIXME: use this!
 994         global $wgUser;
 995
 996         if ( !empty( $this->mPreloadContent ) ) {
 997             return $this->mPreloadContent;
 998         }
 999
1000         $handler = ContentHandler::getForTitle( $this->getTitle() );
1001
1002         if ( $preload === '' ) {
1003             return $handler->makeEmptyContent();
1004         }
1005
1006         $title = Title::newFromText( $preload );
1007         # Check for existence to avoid getting MediaWiki:Noarticletext
1008         if ( $title === null || !$title->exists() || !$title->userCan( 'read' ) ) {
1009             return $handler->makeEmptyContent();
1010         }
1011
1012         $page = WikiPage::factory( $title );
1013         if ( $page->isRedirect() ) {
1014             $title = $page->getRedirectTarget();
1015             # Same as before
1016             if ( $title === null || !$title->exists() || !$title->userCan( 'read' ) ) {
1017                 return $handler->makeEmptyContent();
1018             }
1019             $page = WikiPage::factory( $title );
1020         }
1021
1022         $parserOptions = ParserOptions::newFromUser( $wgUser );
1023         $content = $page->getContent( Revision::RAW );
1024
1025         return $content->preloadTransform( $title, $parserOptions );
1026     }
1027
1028         /**
1029          * Make sure the form isn't faking a user's credentials.
1030          *
1031          * @param $request WebRequest
1032          * @return bool
1033          * @private
1034          */
1035         function tokenOk( &$request ) {
1036                 global $wgUser;
1037                 $token = $request->getVal( 'wpEditToken' );
1038                 $this->mTokenOk = $wgUser->matchEditToken( $token );
1039                 $this->mTokenOkExceptSuffix = $wgUser->matchEditTokenNoSuffix( $token );
1040                 return $this->mTokenOk;
1041         }
1042
1043         /**
1044          * Attempt submission
1045          * @return bool false if output is done, true if the rest of the form should be displayed
1046          */
1047         function attemptSave() {
1048                 global $wgUser, $wgOut;
1049
1050                 $resultDetails = false;
1051                 # Allow bots to exempt some edits from bot flagging
1052                 $bot = $wgUser->isAllowed( 'bot' ) && $this->bot;
1053                 $status = $this->internalAttemptSave( $resultDetails, $bot );
1054                 // FIXME: once the interface for internalAttemptSave() is made nicer, this should use the message in $status
1055
1056                 if ( $status->value == self::AS_SUCCESS_UPDATE || $status->value == self::AS_SUCCESS_NEW_ARTICLE ) {
1057                         $this->didSave = true;
1058                 }
1059
1060                 switch ( $status->value ) {
1061                         case self::AS_HOOK_ERROR_EXPECTED:
1062                         case self::AS_CONTENT_TOO_BIG:
1063                         case self::AS_ARTICLE_WAS_DELETED:
1064                         case self::AS_CONFLICT_DETECTED:
1065                         case self::AS_SUMMARY_NEEDED:
1066                         case self::AS_TEXTBOX_EMPTY:
1067                         case self::AS_MAX_ARTICLE_SIZE_EXCEEDED:
1068                         case self::AS_END:
1069                                 return true;
1070
1071                         case self::AS_HOOK_ERROR:
1072                         case self::AS_FILTERING:
1073                                 return false;
1074
1075                         case self::AS_PARSE_ERROR:
1076                                 $wgOut->addWikiText( '<div class="error">' . $status->getWikiText() . '</div>');
1077                                 #FIXME: cause editform to be shown again, not just an error!
1078                                 return false;
1079
1080                         case self::AS_SUCCESS_NEW_ARTICLE:
1081                                 $query = $resultDetails['redirect'] ? 'redirect=no' : '';
1082                                 $anchor = isset ( $resultDetails['sectionanchor'] ) ? $resultDetails['sectionanchor'] : '';
1083                                 $wgOut->redirect( $this->mTitle->getFullURL( $query ) . $anchor );
1084                                 return false;
1085
1086                         case self::AS_SUCCESS_UPDATE:
1087                                 $extraQuery = '';
1088                                 $sectionanchor = $resultDetails['sectionanchor'];
1089
1090                                 // Give extensions a chance to modify URL query on update
1091                                 wfRunHooks( 'ArticleUpdateBeforeRedirect', array( $this->mArticle, &$sectionanchor, &$extraQuery ) );
1092
1093                                 if ( $resultDetails['redirect'] ) {
1094                                         if ( $extraQuery == '' ) {
1095                                                 $extraQuery = 'redirect=no';
1096                                         } else {
1097                                                 $extraQuery = 'redirect=no&' . $extraQuery;
1098                                         }
1099                                 }
1100                                 $wgOut->redirect( $this->mTitle->getFullURL( $extraQuery ) . $sectionanchor );
1101                                 return false;
1102
1103                         case self::AS_BLANK_ARTICLE:
1104                                 $wgOut->redirect( $this->getContextTitle()->getFullURL() );
1105                                 return false;
1106
1107                         case self::AS_SPAM_ERROR:
1108                                 $this->spamPageWithContent( $resultDetails['spam'] );
1109                                 return false;
1110
1111                         case self::AS_BLOCKED_PAGE_FOR_USER:
1112                                 throw new UserBlockedError( $wgUser->getBlock() );
1113
1114                         case self::AS_IMAGE_REDIRECT_ANON:
1115                         case self::AS_IMAGE_REDIRECT_LOGGED:
1116                                 throw new PermissionsError( 'upload' );
1117
1118                         case self::AS_READ_ONLY_PAGE_ANON:
1119                         case self::AS_READ_ONLY_PAGE_LOGGED:
1120                                 throw new PermissionsError( 'edit' );
1121
1122                         case self::AS_READ_ONLY_PAGE:
1123                                 throw new ReadOnlyError;
1124
1125                         case self::AS_RATE_LIMITED:
1126                                 throw new ThrottledError();
1127
1128                         case self::AS_NO_CREATE_PERMISSION:
1129                                 $permission = $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage';
1130                                 throw new PermissionsError( $permission );
1131
1132                 }
1133                 return false;
1134         }
1135
1136         /**
1137          * Attempt submission (no UI)
1138          *
1139          * @param $result
1140          * @param $bot bool
1141          *
1142          * @return Status object, possibly with a message, but always with one of the AS_* constants in $status->value,
1143          *
1144          * FIXME: This interface is TERRIBLE, but hard to get rid of due to various error display idiosyncrasies. There are
1145          * also lots of cases where error metadata is set in the object and retrieved later instead of being returned, e.g.
1146          * AS_CONTENT_TOO_BIG and AS_BLOCKED_PAGE_FOR_USER. All that stuff needs to be cleaned up some time.
1147          */
1148         function internalAttemptSave( &$result, $bot = false ) {
1149                 global $wgFilterCallback, $wgUser, $wgRequest, $wgParser;
1150                 global $wgMaxArticleSize;
1151
1152                 $status = Status::newGood();
1153
1154                 wfProfileIn( __METHOD__  );
1155                 wfProfileIn( __METHOD__ . '-checks' );
1156
1157                 if ( !wfRunHooks( 'EditPage::attemptSave', array( $this ) ) ) {
1158                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving\n" );
1159                         $status->fatal( 'hookaborted' );
1160                         $status->value = self::AS_HOOK_ERROR;
1161                         wfProfileOut( __METHOD__ . '-checks' );
1162                         wfProfileOut( __METHOD__  );
1163                         return $status;
1164                 }
1165
1166                 # Check image redirect
1167                 if ( $this->mTitle->getNamespace() == NS_FILE &&
1168                         Title::newFromRedirect( $this->textbox1 ) instanceof Title && #FIXME: use content handler to check for redirect
1169                         !$wgUser->isAllowed( 'upload' ) ) {
1170                                 $code = $wgUser->isAnon() ? self::AS_IMAGE_REDIRECT_ANON : self::AS_IMAGE_REDIRECT_LOGGED;
1171                                 $status->setResult( false, $code );
1172
1173                                 wfProfileOut( __METHOD__ . '-checks' );
1174                                 wfProfileOut( __METHOD__  );
1175
1176                                 return $status;
1177                 }
1178
1179                 # Check for spam
1180                 $match = self::matchSummarySpamRegex( $this->summary );
1181                 if ( $match === false ) {
1182                         $match = self::matchSpamRegex( $this->textbox1 );
1183                 }
1184                 if ( $match !== false ) {
1185                         $result['spam'] = $match;
1186                         $ip = $wgRequest->getIP();
1187                         $pdbk = $this->mTitle->getPrefixedDBkey();
1188                         $match = str_replace( "\n", '', $match );
1189                         wfDebugLog( 'SpamRegex', "$ip spam regex hit [[$pdbk]]: \"$match\"" );
1190                         $status->fatal( 'spamprotectionmatch', $match );
1191                         $status->value = self::AS_SPAM_ERROR;
1192                         wfProfileOut( __METHOD__ . '-checks' );
1193                         wfProfileOut( __METHOD__ );
1194                         return $status;
1195                 }
1196                 if ( $wgFilterCallback && is_callable( $wgFilterCallback ) && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section, $this->hookError, $this->summary ) ) {
1197                         # Error messages or other handling should be performed by the filter function
1198                         $status->setResult( false, self::AS_FILTERING );
1199                         wfProfileOut( __METHOD__ . '-checks' );
1200                         wfProfileOut( __METHOD__ );
1201                         return $status;
1202                 }
1203                 if ( !wfRunHooks( 'EditFilter', array( $this, $this->textbox1, $this->section, &$this->hookError, $this->summary ) ) ) {
1204                         # Error messages etc. could be handled within the hook...
1205                         $status->fatal( 'hookaborted' );
1206                         $status->value = self::AS_HOOK_ERROR;
1207                         wfProfileOut( __METHOD__ . '-checks' );
1208                         wfProfileOut( __METHOD__ );
1209                         return $status;
1210                 } elseif ( $this->hookError != '' ) {
1211                         # ...or the hook could be expecting us to produce an error
1212                         $status->fatal( 'hookaborted' );
1213                         $status->value = self::AS_HOOK_ERROR_EXPECTED;
1214                         wfProfileOut( __METHOD__ . '-checks' );
1215                         wfProfileOut( __METHOD__ );
1216                         return $status;
1217                 }
1218
1219                 if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
1220                         // Auto-block user's IP if the account was "hard" blocked
1221                         $wgUser->spreadAnyEditBlock();
1222                         # Check block state against master, thus 'false'.
1223                         $status->setResult( false, self::AS_BLOCKED_PAGE_FOR_USER );
1224                         wfProfileOut( __METHOD__ . '-checks' );
1225                         wfProfileOut( __METHOD__ );
1226                         return $status;
1227                 }
1228
1229                 $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
1230                 if ( $this->kblength > $wgMaxArticleSize ) {
1231                         // Error will be displayed by showEditForm()
1232                         $this->tooBig = true;
1233                         $status->setResult( false, self::AS_CONTENT_TOO_BIG );
1234                         wfProfileOut( __METHOD__ . '-checks' );
1235                         wfProfileOut( __METHOD__ );
1236                         return $status;
1237                 }
1238
1239                 if ( !$wgUser->isAllowed( 'edit' ) ) {
1240                         if ( $wgUser->isAnon() ) {
1241                                 $status->setResult( false, self::AS_READ_ONLY_PAGE_ANON );
1242                                 wfProfileOut( __METHOD__ . '-checks' );
1243                                 wfProfileOut( __METHOD__ );
1244                                 return $status;
1245                         } else {
1246                                 $status->fatal( 'readonlytext' );
1247                                 $status->value = self::AS_READ_ONLY_PAGE_LOGGED;
1248                                 wfProfileOut( __METHOD__ . '-checks' );
1249                                 wfProfileOut( __METHOD__ );
1250                                 return $status;
1251                         }
1252                 }
1253
1254                 if ( wfReadOnly() ) {
1255                         $status->fatal( 'readonlytext' );
1256                         $status->value = self::AS_READ_ONLY_PAGE;
1257                         wfProfileOut( __METHOD__ . '-checks' );
1258                         wfProfileOut( __METHOD__ );
1259                         return $status;
1260                 }
1261                 if ( $wgUser->pingLimiter() ) {
1262                         $status->fatal( 'actionthrottledtext' );
1263                         $status->value = self::AS_RATE_LIMITED;
1264                         wfProfileOut( __METHOD__ . '-checks' );
1265                         wfProfileOut( __METHOD__ );
1266                         return $status;
1267                 }
1268
1269                 # If the article has been deleted while editing, don't save it without
1270                 # confirmation
1271                 if ( $this->wasDeletedSinceLastEdit() && !$this->recreate ) {
1272                         $status->setResult( false, self::AS_ARTICLE_WAS_DELETED );
1273                         wfProfileOut( __METHOD__ . '-checks' );
1274                         wfProfileOut( __METHOD__ );
1275                         return $status;
1276                 }
1277
1278                 wfProfileOut( __METHOD__ . '-checks' );
1279
1280                 # If article is new, insert it.
1281                 $aid = $this->mTitle->getArticleID( Title::GAID_FOR_UPDATE );
1282                 $new = ( $aid == 0 );
1283
1284                 try {
1285             if ( $new ) {
1286                 // Late check for create permission, just in case *PARANOIA*
1287                 if ( !$this->mTitle->userCan( 'create' ) ) {
1288                     $status->fatal( 'nocreatetext' );
1289                     $status->value = self::AS_NO_CREATE_PERMISSION;
1290                     wfDebug( __METHOD__ . ": no create permission\n" );
1291                     wfProfileOut( __METHOD__ );
1292                     return $status;
1293                 }
1294
1295                 # Don't save a new article if it's blank.
1296                 if ( $this->textbox1 == '' ) {
1297                     $status->setResult( false, self::AS_BLANK_ARTICLE );
1298                     wfProfileOut( __METHOD__ );
1299                     return $status;
1300                 }
1301
1302                 // Run post-section-merge edit filter
1303                 if ( !wfRunHooks( 'EditFilterMerged', array( $this, $this->textbox1, &$this->hookError, $this->summary ) ) ) {
1304                     # Error messages etc. could be handled within the hook...
1305                     $status->fatal( 'hookaborted' );
1306                     $status->value = self::AS_HOOK_ERROR;
1307                     wfProfileOut( __METHOD__ );
1308                     return $status;
1309                 } elseif ( $this->hookError != '' ) {
1310                     # ...or the hook could be expecting us to produce an error
1311                     $status->fatal( 'hookaborted' );
1312                     $status->value = self::AS_HOOK_ERROR_EXPECTED;
1313                     wfProfileOut( __METHOD__ );
1314                     return $status;
1315                 }
1316
1317                 $content = ContentHandler::makeContent( $this->textbox1, $this->getTitle(), $this->content_model, $this->content_format );
1318
1319                 $result['sectionanchor'] = '';
1320                 if ( $this->section == 'new' ) {
1321                     if ( $this->sectiontitle !== '' ) {
1322                         // Insert the section title above the content.
1323                         $content = $content->addSectionHeader( $this->sectiontitle );
1324
1325                         // Jump to the new section
1326                         $result['sectionanchor'] = $wgParser->guessLegacySectionNameFromWikiText( $this->sectiontitle );
1327
1328                         // If no edit summary was specified, create one automatically from the section
1329                         // title and have it link to the new section. Otherwise, respect the summary as
1330                         // passed.
1331                         if ( $this->summary === '' ) {
1332                             $cleanSectionTitle = $wgParser->stripSectionName( $this->sectiontitle );
1333                             $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSectionTitle );
1334                         }
1335                     } elseif ( $this->summary !== '' ) {
1336                         // Insert the section title above the content.
1337                         $content = $content->addSectionHeader( $this->sectiontitle );
1338
1339                         // Jump to the new section
1340                         $result['sectionanchor'] = $wgParser->guessLegacySectionNameFromWikiText( $this->summary );
1341
1342                         // Create a link to the new section from the edit summary.
1343                         $cleanSummary = $wgParser->stripSectionName( $this->summary );
1344                         $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
1345                     }
1346                 }
1347
1348                 $status->value = self::AS_SUCCESS_NEW_ARTICLE;
1349
1350             } else { # not $new
1351
1352                 # Article exists. Check for edit conflict.
1353
1354                 $this->mArticle->clear(); # Force reload of dates, etc.
1355                 $timestamp = $this->mArticle->getTimestamp();
1356
1357                 wfDebug( "timestamp: {$timestamp}, edittime: {$this->edittime}\n" );
1358
1359                 if ( $timestamp != $this->edittime ) {
1360                     $this->isConflict = true;
1361                     if ( $this->section == 'new' ) {
1362                         if ( $this->mArticle->getUserText() == $wgUser->getName() &&
1363                             $this->mArticle->getComment() == $this->summary ) {
1364                             // Probably a duplicate submission of a new comment.
1365                             // This can happen when squid resends a request after
1366                             // a timeout but the first one actually went through.
1367                             wfDebug( __METHOD__ . ": duplicate new section submission; trigger edit conflict!\n" );
1368                         } else {
1369                             // New comment; suppress conflict.
1370                             $this->isConflict = false;
1371                             wfDebug( __METHOD__ . ": conflict suppressed; new section\n" );
1372                         }
1373                     } elseif ( $this->section == '' && $this->userWasLastToEdit( $wgUser->getId(), $this->edittime ) ) {
1374                         # Suppress edit conflict with self, except for section edits where merging is required.
1375                         wfDebug( __METHOD__ . ": Suppressing edit conflict, same user.\n" );
1376                         $this->isConflict = false;
1377                     }
1378                 }
1379
1380                 // If sectiontitle is set, use it, otherwise use the summary as the section title (for
1381                 // backwards compatibility with old forms/bots).
1382                 if ( $this->sectiontitle !== '' ) {
1383                     $sectionTitle = $this->sectiontitle;
1384                 } else {
1385                     $sectionTitle = $this->summary;
1386                 }
1387
1388                 $textbox_content = ContentHandler::makeContent( $this->textbox1, $this->getTitle(), $this->content_model, $this->content_format );
1389                 $content = null;
1390
1391                 if ( $this->isConflict ) {
1392                     wfDebug( __METHOD__ . ": conflict! getting section '$this->section' for time '$this->edittime' (article time '{$timestamp}')\n" );
1393                     $content = $this->mArticle->replaceSectionContent( $this->section, $textbox_content, $sectionTitle, $this->edittime );
1394                 } else {
1395                     wfDebug( __METHOD__ . ": getting section '$this->section'\n" );
1396                     $content = $this->mArticle->replaceSectionContent( $this->section, $textbox_content, $sectionTitle );
1397                 }
1398
1399                 if ( is_null( $content ) ) {
1400                     wfDebug( __METHOD__ . ": activating conflict; section replace failed.\n" );
1401                     $this->isConflict = true;
1402                     $content = $textbox_content; // do not try to merge here!
1403                 } elseif ( $this->isConflict ) {
1404                     # Attempt merge
1405                     if ( $this->mergeChangesIntoContent( $textbox_content ) ) {
1406                         // Successful merge! Maybe we should tell the user the good news?
1407                         $this->isConflict = false;
1408                         $content = $textbox_content;
1409                         wfDebug( __METHOD__ . ": Suppressing edit conflict, successful merge.\n" );
1410                     } else {
1411                         $this->section = '';
1412                         #$this->textbox1 = $text; #redundant, nothing to do here?
1413                         wfDebug( __METHOD__ . ": Keeping edit conflict, failed merge.\n" );
1414                     }
1415                 }
1416
1417                 if ( $this->isConflict ) {
1418                     $status->setResult( false, self::AS_CONFLICT_DETECTED );
1419                     wfProfileOut( __METHOD__ );
1420                     return $status;
1421                 }
1422
1423                 // Run post-section-merge edit filter
1424                 if ( !wfRunHooks( 'EditFilterMerged', array( $this, $content->serialize( $this->content_format ), &$this->hookError, $this->summary ) )
1425                         || !wfRunHooks( 'EditFilterMergedContent', array( $this, $content, &$this->hookError, $this->summary ) ) ) { #FIXME: document new hook
1426                     # Error messages etc. could be handled within the hook...
1427                     $status->fatal( 'hookaborted' );
1428                     $status->value = self::AS_HOOK_ERROR;
1429                     wfProfileOut( __METHOD__ );
1430                     return $status;
1431                 } elseif ( $this->hookError != '' ) {
1432                     # ...or the hook could be expecting us to produce an error
1433                     $status->fatal( 'hookaborted' );
1434                     $status->value = self::AS_HOOK_ERROR_EXPECTED;
1435                     wfProfileOut( __METHOD__ );
1436                     return $status;
1437                 }
1438
1439                 $content = ContentHandler::makeContent( $this->textbox1, $this->getTitle(), $this->content_model, $this->content_format );
1440
1441                 # Handle the user preference to force summaries here, but not for null edits
1442                 if ( $this->section != 'new' && !$this->allowBlankSummary
1443                     && !$content->equals( $this->getOriginalContent() )
1444                     && !$content->isRedirect() ) # check if it's not a redirect
1445                 {
1446                     if ( md5( $this->summary ) == $this->autoSumm ) {
1447                         $this->missingSummary = true;
1448                         $status->fatal( 'missingsummary' );
1449                         $status->value = self::AS_SUMMARY_NEEDED;
1450                         wfProfileOut( __METHOD__ );
1451                         return $status;
1452                     }
1453                 }
1454
1455                 # And a similar thing for new sections
1456                 if ( $this->section == 'new' && !$this->allowBlankSummary ) {
1457                     if ( trim( $this->summary ) == '' ) {
1458                         $this->missingSummary = true;
1459                         $status->fatal( 'missingsummary' ); // or 'missingcommentheader' if $section == 'new'. Blegh
1460                         $status->value = self::AS_SUMMARY_NEEDED;
1461                         wfProfileOut( __METHOD__ );
1462                         return $status;
1463                     }
1464                 }
1465
1466                 # All's well
1467                 wfProfileIn( __METHOD__ . '-sectionanchor' );
1468                 $sectionanchor = '';
1469                 if ( $this->section == 'new' ) {
1470                     if ( $this->textbox1 == '' ) {
1471                         $this->missingComment = true;
1472                         $status->fatal( 'missingcommenttext' );
1473                         $status->value = self::AS_TEXTBOX_EMPTY;
1474                         wfProfileOut( __METHOD__ . '-sectionanchor' );
1475                         wfProfileOut( __METHOD__ );
1476                         return $status;
1477                     }
1478                     if ( $this->sectiontitle !== '' ) {
1479                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $this->sectiontitle );
1480                         // If no edit summary was specified, create one automatically from the section
1481                         // title and have it link to the new section. Otherwise, respect the summary as
1482                         // passed.
1483                         if ( $this->summary === '' ) {
1484                             $cleanSectionTitle = $wgParser->stripSectionName( $this->sectiontitle );
1485                             $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSectionTitle );
1486                         }
1487                     } elseif ( $this->summary !== '' ) {
1488                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $this->summary );
1489                         # This is a new section, so create a link to the new section
1490                         # in the revision summary.
1491                         $cleanSummary = $wgParser->stripSectionName( $this->summary );
1492                         $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
1493                     }
1494                 } elseif ( $this->section != '' ) {
1495                     # Try to get a section anchor from the section source, redirect to edited section if header found
1496                     # XXX: might be better to integrate this into Article::replaceSection
1497                     # for duplicate heading checking and maybe parsing
1498                     $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
1499                     # we can't deal with anchors, includes, html etc in the header for now,
1500                     # headline would need to be parsed to improve this
1501                     if ( $hasmatch && strlen( $matches[2] ) > 0 ) {
1502                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $matches[2] );
1503                     }
1504                 }
1505                 $result['sectionanchor'] = $sectionanchor;
1506                 wfProfileOut( __METHOD__ . '-sectionanchor' );
1507
1508                 // Save errors may fall down to the edit form, but we've now
1509                 // merged the section into full text. Clear the section field
1510                 // so that later submission of conflict forms won't try to
1511                 // replace that into a duplicated mess.
1512                     $this->textbox1 = $content->serialize( $this->content_format );
1513                 $this->section = '';
1514
1515                 $status->value = self::AS_SUCCESS_UPDATE;
1516             }
1517
1518             // Check for length errors again now that the section is merged in
1519                 $this->kblength = (int)( strlen( $content->serialize( $this->content_format ) ) / 1024 );
1520             if ( $this->kblength > $wgMaxArticleSize ) {
1521                 $this->tooBig = true;
1522                 $status->setResult( false, self::AS_MAX_ARTICLE_SIZE_EXCEEDED );
1523                 wfProfileOut( __METHOD__ );
1524                 return $status;
1525             }
1526
1527             $flags = EDIT_DEFER_UPDATES | EDIT_AUTOSUMMARY |
1528                 ( $new ? EDIT_NEW : EDIT_UPDATE ) |
1529                 ( ( $this->minoredit && !$this->isNew ) ? EDIT_MINOR : 0 ) |
1530                 ( $bot ? EDIT_FORCE_BOT : 0 );
1531
1532                 $doEditStatus = $this->mArticle->doEditContent( $content, $this->summary, $flags, false, null, $this->content_format );
1533
1534             if ( $doEditStatus->isOK() ) {
1535                     $result['redirect'] = $content->isRedirect();
1536                 $this->commitWatch();
1537                 wfProfileOut( __METHOD__ );
1538                 return $status;
1539             } else {
1540                 $this->isConflict = true;
1541                 $doEditStatus->value = self::AS_END; // Destroys data doEdit() put in $status->value but who cares
1542                 wfProfileOut( __METHOD__ );
1543                 return $doEditStatus;
1544             }
1545                 } catch (MWContentSerializationException $ex) {
1546                         $status->fatal( 'content-failed-to-parse', $this->content_model, $this->content_format, $ex->getMessage() );
1547                         $status->value = self::AS_PARSE_ERROR;
1548                         wfProfileOut( __METHOD__ );
1549                         return $status;
1550                 }
1551         }
1552
1553         /**
1554          * Commit the change of watch status
1555          */
1556         protected function commitWatch() {
1557                 global $wgUser;
1558                 if ( $this->watchthis xor $this->mTitle->userIsWatching() ) {
1559                         $dbw = wfGetDB( DB_MASTER );
1560                         $dbw->begin( __METHOD__ );
1561                         if ( $this->watchthis ) {
1562                                 WatchAction::doWatch( $this->mTitle, $wgUser );
1563                         } else {
1564                                 WatchAction::doUnwatch( $this->mTitle, $wgUser );
1565                         }
1566                         $dbw->commit( __METHOD__ );
1567                 }
1568         }
1569
1570         /**
1571          * Check if no edits were made by other users since
1572          * the time a user started editing the page. Limit to
1573          * 50 revisions for the sake of performance.
1574          *
1575          * @param $id int
1576          * @param $edittime string
1577          *
1578          * @return bool
1579          */
1580         protected function userWasLastToEdit( $id, $edittime ) {
1581                 if ( !$id ) return false;
1582                 $dbw = wfGetDB( DB_MASTER );
1583                 $res = $dbw->select( 'revision',
1584                         'rev_user',
1585                         array(
1586                                 'rev_page' => $this->mTitle->getArticleID(),
1587                                 'rev_timestamp > ' . $dbw->addQuotes( $dbw->timestamp( $edittime ) )
1588                         ),
1589                         __METHOD__,
1590                         array( 'ORDER BY' => 'rev_timestamp ASC', 'LIMIT' => 50 ) );
1591                 foreach ( $res as $row ) {
1592                         if ( $row->rev_user != $id ) {
1593                                 return false;
1594                         }
1595                 }
1596                 return true;
1597         }
1598
1599     /**
1600      * @private
1601      * @todo document
1602      *
1603      * @parma $editText string
1604      *
1605      * @return bool
1606      * @deprecated since 1.20
1607      */
1608     function mergeChangesInto( &$editText ){
1609         wfDebug( __METHOD__, "1.20" );
1610
1611         $editContent = ContentHandler::makeContent( $editText, $this->getTitle(), $this->content_model, $this->content_format );
1612
1613         $ok = $this->mergeChangesIntoContent( $editContent );
1614
1615         if ( $ok ) {
1616             $editText = $editContent->serialize( $this->content_format ); #XXX: really serialize?!
1617             return true;
1618         } else {
1619             return false;
1620         }
1621     }
1622
1623     /**
1624      * @private
1625      * @todo document
1626      *
1627      * @parma $editText string
1628      *
1629      * @return bool
1630      * @since since 1.20
1631      */
1632     private function mergeChangesIntoContent( &$editContent ){
1633         wfProfileIn( __METHOD__ );
1634
1635         $db = wfGetDB( DB_MASTER );
1636
1637         // This is the revision the editor started from
1638         $baseRevision = $this->getBaseRevision();
1639         if ( is_null( $baseRevision ) ) {
1640             wfProfileOut( __METHOD__ );
1641             return false;
1642         }
1643         $baseContent = $baseRevision->getContent();
1644
1645         // The current state, we want to merge updates into it
1646         $currentRevision = Revision::loadFromTitle( $db, $this->mTitle );
1647         if ( is_null( $currentRevision ) ) {
1648             wfProfileOut( __METHOD__ );
1649             return false;
1650         }
1651         $currentContent = $currentRevision->getContent();
1652
1653         $handler = ContentHandler::getForModelName( $baseContent->getModelName() );
1654
1655         $result = $handler->merge3( $baseContent, $editContent, $currentContent );
1656
1657         if ( $result ) {
1658             $editContent = $result;
1659             wfProfileOut( __METHOD__ );
1660             return true;
1661         } else {
1662             wfProfileOut( __METHOD__ );
1663             return false;
1664         }
1665     }
1666
1667         /**
1668          * @return Revision
1669          */
1670         function getBaseRevision() {
1671                 if ( !$this->mBaseRevision ) {
1672                         $db = wfGetDB( DB_MASTER );
1673                         $baseRevision = Revision::loadFromTimestamp(
1674                                 $db, $this->mTitle, $this->edittime );
1675                         return $this->mBaseRevision = $baseRevision;
1676                 } else {
1677                         return $this->mBaseRevision;
1678                 }
1679         }
1680
1681         /**
1682          * Check given input text against $wgSpamRegex, and return the text of the first match.
1683          *
1684          * @param $text string
1685          *
1686          * @return string|bool matching string or false
1687          */
1688         public static function matchSpamRegex( $text ) {
1689                 global $wgSpamRegex;
1690                 // For back compatibility, $wgSpamRegex may be a single string or an array of regexes.
1691                 $regexes = (array)$wgSpamRegex;
1692                 return self::matchSpamRegexInternal( $text, $regexes );
1693         }
1694
1695         /**
1696          * Check given input text against $wgSpamRegex, and return the text of the first match.
1697          *
1698          * @parma $text string
1699          *
1700          * @return string|bool  matching string or false
1701          */
1702         public static function matchSummarySpamRegex( $text ) {
1703                 global $wgSummarySpamRegex;
1704                 $regexes = (array)$wgSummarySpamRegex;
1705                 return self::matchSpamRegexInternal( $text, $regexes );
1706         }
1707
1708         /**
1709          * @param $text string
1710          * @param $regexes array
1711          * @return bool|string
1712          */
1713         protected static function matchSpamRegexInternal( $text, $regexes ) {
1714                 foreach ( $regexes as $regex ) {
1715                         $matches = array();
1716                         if ( preg_match( $regex, $text, $matches ) ) {
1717                                 return $matches[0];
1718                         }
1719                 }
1720                 return false;
1721         }
1722
1723         function setHeaders() {
1724                 global $wgOut, $wgUser;
1725
1726                 $wgOut->addModules( 'mediawiki.action.edit' );
1727
1728                 if ( $wgUser->getOption( 'uselivepreview', false ) ) {
1729                         $wgOut->addModules( 'mediawiki.legacy.preview' );
1730                 }
1731                 // Bug #19334: textarea jumps when editing articles in IE8
1732                 $wgOut->addStyle( 'common/IE80Fixes.css', 'screen', 'IE 8' );
1733
1734                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1735
1736                 # Enabled article-related sidebar, toplinks, etc.
1737                 $wgOut->setArticleRelated( true );
1738
1739                 $contextTitle = $this->getContextTitle();
1740                 if ( $this->isConflict ) {
1741                         $msg = 'editconflict';
1742                 } elseif ( $contextTitle->exists() && $this->section != '' ) {
1743                         $msg = $this->section == 'new' ? 'editingcomment' : 'editingsection';
1744                 } else {
1745                         $msg = $contextTitle->exists() || ( $contextTitle->getNamespace() == NS_MEDIAWIKI && $contextTitle->getDefaultMessageText() !== false ) ?
1746                                 'editing' : 'creating';
1747                 }
1748                 # Use the title defined by DISPLAYTITLE magic word when present
1749                 $displayTitle = isset( $this->mParserOutput ) ? $this->mParserOutput->getDisplayTitle() : false;
1750                 if ( $displayTitle === false ) {
1751                         $displayTitle = $contextTitle->getPrefixedText();
1752                 }
1753                 $wgOut->setPageTitle( wfMessage( $msg, $displayTitle ) );
1754         }
1755
1756         /**
1757          * Show all applicable editing introductions
1758          */
1759         protected function showIntro() {
1760                 global $wgOut, $wgUser;
1761                 if ( $this->suppressIntro ) {
1762                         return;
1763                 }
1764
1765                 $namespace = $this->mTitle->getNamespace();
1766
1767                 if ( $namespace == NS_MEDIAWIKI ) {
1768                         # Show a warning if editing an interface message
1769                         $wgOut->wrapWikiMsg( "<div class='mw-editinginterface'>\n$1\n</div>", 'editinginterface' );
1770                 } else if( $namespace == NS_FILE ) {
1771                         # Show a hint to shared repo
1772                         $file = wfFindFile( $this->mTitle );
1773                         if( $file && !$file->isLocal() ) {
1774                                 $descUrl = $file->getDescriptionUrl();
1775                                 # there must be a description url to show a hint to shared repo
1776                                 if( $descUrl ) {
1777                                         if( !$this->mTitle->exists() ) {
1778                                                 $wgOut->wrapWikiMsg( "<div class=\"mw-sharedupload-desc-create\">\n$1\n</div>", array (
1779                                                                         'sharedupload-desc-create', $file->getRepo()->getDisplayName(), $descUrl
1780                                                 ) );
1781                                         } else {
1782                                                 $wgOut->wrapWikiMsg( "<div class=\"mw-sharedupload-desc-edit\">\n$1\n</div>", array(
1783                                                                         'sharedupload-desc-edit', $file->getRepo()->getDisplayName(), $descUrl
1784                                                 ) );
1785                                         }
1786                                 }
1787                         }
1788                 }
1789
1790                 # Show a warning message when someone creates/edits a user (talk) page but the user does not exist
1791                 # Show log extract when the user is currently blocked
1792                 if ( $namespace == NS_USER || $namespace == NS_USER_TALK ) {
1793                         $parts = explode( '/', $this->mTitle->getText(), 2 );
1794                         $username = $parts[0];
1795                         $user = User::newFromName( $username, false /* allow IP users*/ );
1796                         $ip = User::isIP( $username );
1797                         if ( !( $user && $user->isLoggedIn() ) && !$ip ) { # User does not exist
1798                                 $wgOut->wrapWikiMsg( "<div class=\"mw-userpage-userdoesnotexist error\">\n$1\n</div>",
1799                                         array( 'userpage-userdoesnotexist', wfEscapeWikiText( $username ) ) );
1800                         } elseif ( $user->isBlocked() ) { # Show log extract if the user is currently blocked
1801                                 LogEventsList::showLogExtract(
1802                                         $wgOut,
1803                                         'block',
1804                                         $user->getUserPage(),
1805                                         '',
1806                                         array(
1807                                                 'lim' => 1,
1808                                                 'showIfEmpty' => false,
1809                                                 'msgKey' => array(
1810                                                         'blocked-notice-logextract',
1811                                                         $user->getName() # Support GENDER in notice
1812                                                 )
1813                                         )
1814                                 );
1815                         }
1816                 }
1817                 # Try to add a custom edit intro, or use the standard one if this is not possible.
1818                 if ( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
1819                         if ( $wgUser->isLoggedIn() ) {
1820                                 $wgOut->wrapWikiMsg( "<div class=\"mw-newarticletext\">\n$1\n</div>", 'newarticletext' );
1821                         } else {
1822                                 $wgOut->wrapWikiMsg( "<div class=\"mw-newarticletextanon\">\n$1\n</div>", 'newarticletextanon' );
1823                         }
1824                 }
1825                 # Give a notice if the user is editing a deleted/moved page...
1826                 if ( !$this->mTitle->exists() ) {
1827                         LogEventsList::showLogExtract( $wgOut, array( 'delete', 'move' ), $this->mTitle,
1828                                 '', array( 'lim' => 10,
1829                                            'conds' => array( "log_action != 'revision'" ),
1830                                            'showIfEmpty' => false,
1831                                            'msgKey' => array( 'recreate-moveddeleted-warn' ) )
1832                         );
1833                 }
1834         }
1835
1836         /**
1837          * Attempt to show a custom editing introduction, if supplied
1838          *
1839          * @return bool
1840          */
1841         protected function showCustomIntro() {
1842                 if ( $this->editintro ) {
1843                         $title = Title::newFromText( $this->editintro );
1844                         if ( $title instanceof Title && $title->exists() && $title->userCan( 'read' ) ) {
1845                                 global $wgOut;
1846                                 // Added using template syntax, to take <noinclude>'s into account.
1847                                 $wgOut->addWikiTextTitleTidy( '{{:' . $title->getFullText() . '}}', $this->mTitle );
1848                                 return true;
1849                         } else {
1850                                 return false;
1851                         }
1852                 } else {
1853                         return false;
1854                 }
1855         }
1856
1857         /**
1858          * Send the edit form and related headers to $wgOut
1859          * @param $formCallback Callback that takes an OutputPage parameter; will be called
1860          *     during form output near the top, for captchas and the like.
1861          */
1862         function showEditForm( $formCallback = null ) {
1863                 global $wgOut, $wgUser;
1864
1865                 wfProfileIn( __METHOD__ );
1866
1867                 # need to parse the preview early so that we know which templates are used,
1868                 # otherwise users with "show preview after edit box" will get a blank list
1869                 # we parse this near the beginning so that setHeaders can do the title
1870                 # setting work instead of leaving it in getPreviewText
1871                 $previewOutput = '';
1872                 if ( $this->formtype == 'preview' ) {
1873                         $previewOutput = $this->getPreviewText();
1874                 }
1875
1876                 wfRunHooks( 'EditPage::showEditForm:initial', array( &$this, &$wgOut ) );
1877
1878                 $this->setHeaders();
1879
1880                 if ( $this->showHeader() === false ) {
1881                         wfProfileOut( __METHOD__ );
1882                         return;
1883                 }
1884
1885                 $wgOut->addHTML( $this->editFormPageTop );
1886
1887                 if ( $wgUser->getOption( 'previewontop' ) ) {
1888                         $this->displayPreviewArea( $previewOutput, true );
1889                 }
1890
1891                 $wgOut->addHTML( $this->editFormTextTop );
1892
1893                 $showToolbar = true;
1894                 if ( $this->wasDeletedSinceLastEdit() ) {
1895                         if ( $this->formtype == 'save' ) {
1896                                 // Hide the toolbar and edit area, user can click preview to get it back
1897                                 // Add an confirmation checkbox and explanation.
1898                                 $showToolbar = false;
1899                         } else {
1900                                 $wgOut->wrapWikiMsg( "<div class='error mw-deleted-while-editing'>\n$1\n</div>",
1901                                         'deletedwhileediting' );
1902                         }
1903                 }
1904
1905                 #FIXME: add EditForm plugin interface and use it here! #FIXME: search for textarea1 and textares2, and allow EditForm to override all uses.
1906                 $wgOut->addHTML( Html::openElement( 'form', array( 'id' => 'editform', 'name' => 'editform',
1907                         'method' => 'post', 'action' => $this->getActionURL( $this->getContextTitle() ),
1908                         'enctype' => 'multipart/form-data' ) ) );
1909
1910                 if ( is_callable( $formCallback ) ) {
1911                         call_user_func_array( $formCallback, array( &$wgOut ) );
1912                 }
1913
1914                 wfRunHooks( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );
1915
1916                 // Put these up at the top to ensure they aren't lost on early form submission
1917                 $this->showFormBeforeText();
1918
1919                 if ( $this->wasDeletedSinceLastEdit() && 'save' == $this->formtype ) {
1920                         $username = $this->lastDelete->user_name;
1921                         $comment = $this->lastDelete->log_comment;
1922
1923                         // It is better to not parse the comment at all than to have templates expanded in the middle
1924                         // TODO: can the checkLabel be moved outside of the div so that wrapWikiMsg could be used?
1925                         $key = $comment === ''
1926                                 ? 'confirmrecreate-noreason'
1927                                 : 'confirmrecreate';
1928                         $wgOut->addHTML(
1929                                 '<div class="mw-confirm-recreate">' .
1930                                 wfMsgExt( $key, 'parseinline', $username, "<nowiki>$comment</nowiki>" ) .
1931                                 Xml::checkLabel( wfMsg( 'recreate' ), 'wpRecreate', 'wpRecreate', false,
1932                                         array( 'title' => Linker::titleAttrib( 'recreate' ), 'tabindex' => 1, 'id' => 'wpRecreate' )
1933                                 ) .
1934                                 '</div>'
1935                         );
1936                 }
1937
1938                 # When the summary is hidden, also hide them on preview/show changes
1939                 if( $this->nosummary ) {
1940                         $wgOut->addHTML( Html::hidden( 'nosummary', true ) );
1941                 }
1942
1943                 # If a blank edit summary was previously provided, and the appropriate
1944                 # user preference is active, pass a hidden tag as wpIgnoreBlankSummary. This will stop the
1945                 # user being bounced back more than once in the event that a summary
1946                 # is not required.
1947                 #####
1948                 # For a bit more sophisticated detection of blank summaries, hash the
1949                 # automatic one and pass that in the hidden field wpAutoSummary.
1950                 if ( $this->missingSummary || ( $this->section == 'new' && $this->nosummary ) ) {
1951                         $wgOut->addHTML( Html::hidden( 'wpIgnoreBlankSummary', true ) );
1952                 }
1953
1954                 if ( $this->hasPresetSummary ) {
1955                         // If a summary has been preset using &summary= we dont want to prompt for
1956                         // a different summary. Only prompt for a summary if the summary is blanked.
1957                         // (Bug 17416)
1958                         $this->autoSumm = md5( '' );
1959                 }
1960
1961                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
1962                 $wgOut->addHTML( Html::hidden( 'wpAutoSummary', $autosumm ) );
1963
1964                 $wgOut->addHTML( Html::hidden( 'oldid', $this->oldid ) );
1965
1966                 $wgOut->addHTML( Html::hidden( 'format', $this->content_format ) );
1967                 $wgOut->addHTML( Html::hidden( 'model', $this->content_model ) );
1968
1969                 if ( $this->section == 'new' ) {
1970                         $this->showSummaryInput( true, $this->summary );
1971                         $wgOut->addHTML( $this->getSummaryPreview( true, $this->summary ) );
1972                 }
1973
1974                 $wgOut->addHTML( $this->editFormTextBeforeContent );
1975
1976                 if ( !$this->isCssJsSubpage && $showToolbar && $wgUser->getOption( 'showtoolbar' ) ) {
1977                         $wgOut->addHTML( EditPage::getEditToolbar() );
1978                 }
1979
1980                 if ( $this->isConflict ) {
1981                         // In an edit conflict bypass the overrideable content form method
1982                         // and fallback to the raw wpTextbox1 since editconflicts can't be
1983                         // resolved between page source edits and custom ui edits using the
1984                         // custom edit ui.
1985                         $this->textbox2 = $this->textbox1;
1986
1987                         $content = $this->getCurrentContent();
1988                         $this->textbox1 = $content->serialize( $this->content_format );
1989
1990                         $this->showTextbox1();
1991                 } else {
1992                         $this->showContentForm();
1993                 }
1994
1995                 $wgOut->addHTML( $this->editFormTextAfterContent );
1996
1997                 $wgOut->addWikiText( $this->getCopywarn() );
1998
1999                 $wgOut->addHTML( $this->editFormTextAfterWarn );
2000
2001                 $this->showStandardInputs();
2002
2003                 $this->showFormAfterText();
2004
2005                 $this->showTosSummary();
2006
2007                 $this->showEditTools();
2008
2009                 $wgOut->addHTML( $this->editFormTextAfterTools . "\n" );
2010
2011                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'templatesUsed' ),
2012                         Linker::formatTemplates( $this->getTemplates(), $this->preview, $this->section != '' ) ) );
2013
2014                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'hiddencats' ),
2015                         Linker::formatHiddenCategories( $this->mArticle->getHiddenCategories() ) ) );
2016
2017                 if ( $this->isConflict ) {
2018                         $this->showConflict();
2019                 }
2020
2021                 $wgOut->addHTML( $this->editFormTextBottom . "\n</form>\n" );
2022
2023                 if ( !$wgUser->getOption( 'previewontop' ) ) {
2024                         $this->displayPreviewArea( $previewOutput, false );
2025                 }
2026
2027                 wfProfileOut( __METHOD__ );
2028         }
2029
2030         /**
2031          * Extract the section title from current section text, if any.
2032          *
2033          * @param string $text
2034          * @return Mixed|string or false
2035          */
2036         public static function extractSectionTitle( $text ) {
2037                 preg_match( "/^(=+)(.+)\\1\\s*(\n|$)/i", $text, $matches );
2038                 if ( !empty( $matches[2] ) ) {
2039                         global $wgParser;
2040                         return $wgParser->stripSectionName( trim( $matches[2] ) );
2041                 } else {
2042                         return false;
2043                 }
2044         }
2045
2046         protected function showHeader() {
2047                 global $wgOut, $wgUser, $wgMaxArticleSize, $wgLang;
2048
2049                 if ( $this->mTitle->isTalkPage() ) {
2050                         $wgOut->addWikiMsg( 'talkpagetext' );
2051                 }
2052
2053                 # Optional notices on a per-namespace and per-page basis
2054                 $editnotice_ns = 'editnotice-' . $this->mTitle->getNamespace();
2055                 $editnotice_ns_message = wfMessage( $editnotice_ns )->inContentLanguage();
2056                 if ( $editnotice_ns_message->exists() ) {
2057                         $wgOut->addWikiText( $editnotice_ns_message->plain() );
2058                 }
2059                 if ( MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
2060                         $parts = explode( '/', $this->mTitle->getDBkey() );
2061                         $editnotice_base = $editnotice_ns;
2062                         while ( count( $parts ) > 0 ) {
2063                                 $editnotice_base .= '-' . array_shift( $parts );
2064                                 $editnotice_base_msg = wfMessage( $editnotice_base )->inContentLanguage();
2065                                 if ( $editnotice_base_msg->exists() ) {
2066                                         $wgOut->addWikiText( $editnotice_base_msg->plain() );
2067                                 }
2068                         }
2069                 } else {
2070                         # Even if there are no subpages in namespace, we still don't want / in MW ns.
2071                         $editnoticeText = $editnotice_ns . '-' . str_replace( '/', '-', $this->mTitle->getDBkey() );
2072                         $editnoticeMsg = wfMessage( $editnoticeText )->inContentLanguage();
2073                         if ( $editnoticeMsg->exists() ) {
2074                                 $wgOut->addWikiText( $editnoticeMsg->plain() );
2075                         }
2076                 }
2077
2078                 if ( $this->isConflict ) {
2079                         $wgOut->wrapWikiMsg( "<div class='mw-explainconflict'>\n$1\n</div>", 'explainconflict' );
2080                         $this->edittime = $this->mArticle->getTimestamp();
2081                 } else {
2082                         if ( $this->section != '' && !$this->isSectionEditSupported() ) {
2083                                 // We use $this->section to much before this and getVal('wgSection') directly in other places
2084                                 // at this point we can't reset $this->section to '' to fallback to non-section editing.
2085                                 // Someone is welcome to try refactoring though
2086                                 $wgOut->showErrorPage( 'sectioneditnotsupported-title', 'sectioneditnotsupported-text' );
2087                                 return false;
2088                         }
2089
2090                         if ( $this->section != '' && $this->section != 'new' ) {
2091                                 if ( !$this->summary && !$this->preview && !$this->diff ) {
2092                                         $sectionTitle = self::extractSectionTitle( $this->textbox1 );
2093                                         if ( $sectionTitle !== false ) {
2094                                                 $this->summary = "/* $sectionTitle */ ";
2095                                         }
2096                                 }
2097                         }
2098
2099                         if ( $this->missingComment ) {
2100                                 $wgOut->wrapWikiMsg( "<div id='mw-missingcommenttext'>\n$1\n</div>", 'missingcommenttext' );
2101                         }
2102
2103                         if ( $this->missingSummary && $this->section != 'new' ) {
2104                                 $wgOut->wrapWikiMsg( "<div id='mw-missingsummary'>\n$1\n</div>", 'missingsummary' );
2105                         }
2106
2107                         if ( $this->missingSummary && $this->section == 'new' ) {
2108                                 $wgOut->wrapWikiMsg( "<div id='mw-missingcommentheader'>\n$1\n</div>", 'missingcommentheader' );
2109                         }
2110
2111                         if ( $this->hookError !== '' ) {
2112                                 $wgOut->addWikiText( $this->hookError );
2113                         }
2114
2115                         if ( !$this->checkUnicodeCompliantBrowser() ) {
2116                                 $wgOut->addWikiMsg( 'nonunicodebrowser' );
2117                         }
2118
2119                         if ( $this->section != 'new' ) {
2120                                 $revision = $this->mArticle->getRevisionFetched();
2121                                 if ( $revision ) {
2122                                         // Let sysop know that this will make private content public if saved
2123
2124                                         if ( !$revision->userCan( Revision::DELETED_TEXT ) ) {
2125                                                 $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n", 'rev-deleted-text-permission' );
2126                                         } elseif ( $revision->isDeleted( Revision::DELETED_TEXT ) ) {
2127                                                 $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n", 'rev-deleted-text-view' );
2128                                         }
2129
2130                                         if ( !$revision->isCurrent() ) {
2131                                                 $this->mArticle->setOldSubtitle( $revision->getId() );
2132                                                 $wgOut->addWikiMsg( 'editingold' );
2133                                         }
2134                                 } elseif ( $this->mTitle->exists() ) {
2135                                         // Something went wrong
2136
2137                                         $wgOut->wrapWikiMsg( "<div class='errorbox'>\n$1\n</div>\n",
2138                                                 array( 'missing-article', $this->mTitle->getPrefixedText(),
2139                                                 wfMsgNoTrans( 'missingarticle-rev', $this->oldid ) ) );
2140                                 }
2141                         }
2142                 }
2143
2144                 if ( wfReadOnly() ) {
2145                         $wgOut->wrapWikiMsg( "<div id=\"mw-read-only-warning\">\n$1\n</div>", array( 'readonlywarning', wfReadOnlyReason() ) );
2146                 } elseif ( $wgUser->isAnon() ) {
2147                         if ( $this->formtype != 'preview' ) {
2148                                 $wgOut->wrapWikiMsg( "<div id=\"mw-anon-edit-warning\">\n$1</div>", 'anoneditwarning' );
2149                         } else {
2150                                 $wgOut->wrapWikiMsg( "<div id=\"mw-anon-preview-warning\">\n$1</div>", 'anonpreviewwarning' );
2151                         }
2152                 } else {
2153                         if ( $this->isCssJsSubpage ) {
2154                                 # Check the skin exists
2155                                 if ( $this->isWrongCaseCssJsPage ) {
2156                                         $wgOut->wrapWikiMsg( "<div class='error' id='mw-userinvalidcssjstitle'>\n$1\n</div>", array( 'userinvalidcssjstitle', $this->mTitle->getSkinFromCssJsSubpage() ) );
2157                                 }
2158                                 if ( $this->formtype !== 'preview' ) {
2159                                         if ( $this->isCssSubpage )
2160                                                 $wgOut->wrapWikiMsg( "<div id='mw-usercssyoucanpreview'>\n$1\n</div>", array( 'usercssyoucanpreview' ) );
2161                                         if ( $this->isJsSubpage )
2162                                                 $wgOut->wrapWikiMsg( "<div id='mw-userjsyoucanpreview'>\n$1\n</div>", array( 'userjsyoucanpreview' ) );
2163                                 }
2164                         }
2165                 }
2166
2167                 if ( $this->mTitle->getNamespace() != NS_MEDIAWIKI && $this->mTitle->isProtected( 'edit' ) ) {
2168                         # Is the title semi-protected?
2169                         if ( $this->mTitle->isSemiProtected() ) {
2170                                 $noticeMsg = 'semiprotectedpagewarning';
2171                         } else {
2172                                 # Then it must be protected based on static groups (regular)
2173                                 $noticeMsg = 'protectedpagewarning';
2174                         }
2175                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle, '',
2176                                 array( 'lim' => 1, 'msgKey' => array( $noticeMsg ) ) );
2177                 }
2178                 if ( $this->mTitle->isCascadeProtected() ) {
2179                         # Is this page under cascading protection from some source pages?
2180                         list( $cascadeSources, /* $restrictions */ ) = $this->mTitle->getCascadeProtectionSources();
2181                         $notice = "<div class='mw-cascadeprotectedwarning'>\n$1\n";
2182                         $cascadeSourcesCount = count( $cascadeSources );
2183                         if ( $cascadeSourcesCount > 0 ) {
2184                                 # Explain, and list the titles responsible
2185                                 foreach ( $cascadeSources as $page ) {
2186                                         $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
2187                                 }
2188                         }
2189                         $notice .= '</div>';
2190                         $wgOut->wrapWikiMsg( $notice, array( 'cascadeprotectedwarning', $cascadeSourcesCount ) );
2191                 }
2192                 if ( !$this->mTitle->exists() && $this->mTitle->getRestrictions( 'create' ) ) {
2193                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle, '',
2194                                 array( 'lim' => 1,
2195                                         'showIfEmpty' => false,
2196                                         'msgKey' => array( 'titleprotectedwarning' ),
2197                                         'wrap' => "<div class=\"mw-titleprotectedwarning\">\n$1</div>" ) );
2198                 }
2199
2200                 if ( $this->kblength === false ) {
2201                         $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
2202                 }
2203
2204                 if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
2205                         $wgOut->wrapWikiMsg( "<div class='error' id='mw-edit-longpageerror'>\n$1\n</div>",
2206                                 array( 'longpageerror', $wgLang->formatNum( $this->kblength ), $wgLang->formatNum( $wgMaxArticleSize ) ) );
2207                 } else {
2208                         if ( !wfMessage( 'longpage-hint' )->isDisabled() ) {
2209                                 $wgOut->wrapWikiMsg( "<div id='mw-edit-longpage-hint'>\n$1\n</div>",
2210                                         array( 'longpage-hint', $wgLang->formatSize( strlen( $this->textbox1 ) ), strlen( $this->textbox1 ) )
2211                                 );
2212                         }
2213                 }
2214         }
2215
2216         /**
2217          * Standard summary input and label (wgSummary), abstracted so EditPage
2218          * subclasses may reorganize the form.
2219          * Note that you do not need to worry about the label's for=, it will be
2220          * inferred by the id given to the input. You can remove them both by
2221          * passing array( 'id' => false ) to $userInputAttrs.
2222          *
2223          * @param $summary string The value of the summary input
2224          * @param $labelText string The html to place inside the label
2225          * @param $inputAttrs array of attrs to use on the input
2226          * @param $spanLabelAttrs array of attrs to use on the span inside the label
2227          *
2228          * @return array An array in the format array( $label, $input )
2229          */
2230         function getSummaryInput( $summary = "", $labelText = null, $inputAttrs = null, $spanLabelAttrs = null ) {
2231                 // Note: the maxlength is overriden in JS to 250 and to make it use UTF-8 bytes, not characters.
2232                 $inputAttrs = ( is_array( $inputAttrs ) ? $inputAttrs : array() ) + array(
2233                         'id' => 'wpSummary',
2234                         'maxlength' => '200',
2235                         'tabindex' => '1',
2236                         'size' => 60,
2237                         'spellcheck' => 'true',
2238                 ) + Linker::tooltipAndAccesskeyAttribs( 'summary' );
2239
2240                 $spanLabelAttrs = ( is_array( $spanLabelAttrs ) ? $spanLabelAttrs : array() ) + array(
2241                         'class' => $this->missingSummary ? 'mw-summarymissed' : 'mw-summary',
2242                         'id' => "wpSummaryLabel"
2243                 );
2244
2245                 $label = null;
2246                 if ( $labelText ) {
2247                         $label = Xml::tags( 'label', $inputAttrs['id'] ? array( 'for' => $inputAttrs['id'] ) : null, $labelText );
2248                         $label = Xml::tags( 'span', $spanLabelAttrs, $label );
2249                 }
2250
2251                 $input = Html::input( 'wpSummary', $summary, 'text', $inputAttrs );
2252
2253                 return array( $label, $input );
2254         }
2255
2256         /**
2257          * @param $isSubjectPreview Boolean: true if this is the section subject/title
2258          *                          up top, or false if this is the comment summary
2259          *                          down below the textarea
2260          * @param $summary String: The text of the summary to display
2261          * @return String
2262          */
2263         protected function showSummaryInput( $isSubjectPreview, $summary = "" ) {
2264                 global $wgOut, $wgContLang;
2265                 # Add a class if 'missingsummary' is triggered to allow styling of the summary line
2266                 $summaryClass = $this->missingSummary ? 'mw-summarymissed' : 'mw-summary';
2267                 if ( $isSubjectPreview ) {
2268                         if ( $this->nosummary ) {
2269                                 return;
2270                         }
2271                 } else {
2272                         if ( !$this->mShowSummaryField ) {
2273                                 return;
2274                         }
2275                 }
2276                 $summary = $wgContLang->recodeForEdit( $summary );
2277                 $labelText = wfMsgExt( $isSubjectPreview ? 'subject' : 'summary', 'parseinline' );
2278                 list( $label, $input ) = $this->getSummaryInput( $summary, $labelText, array( 'class' => $summaryClass ), array() );
2279                 $wgOut->addHTML( "{$label} {$input}" );
2280         }
2281
2282         /**
2283          * @param $isSubjectPreview Boolean: true if this is the section subject/title
2284          *                          up top, or false if this is the comment summary
2285          *                          down below the textarea
2286          * @param $summary String: the text of the summary to display
2287          * @return String
2288          */
2289         protected function getSummaryPreview( $isSubjectPreview, $summary = "" ) {
2290                 if ( !$summary || ( !$this->preview && !$this->diff ) )
2291                         return "";
2292
2293                 global $wgParser;
2294
2295                 if ( $isSubjectPreview )
2296                         $summary = wfMsgForContent( 'newsectionsummary', $wgParser->stripSectionName( $summary ) );
2297
2298                 $message = $isSubjectPreview ? 'subject-preview' : 'summary-preview';
2299
2300                 $summary = wfMsgExt( $message, 'parseinline' ) . Linker::commentBlock( $summary, $this->mTitle, $isSubjectPreview );
2301                 return Xml::tags( 'div', array( 'class' => 'mw-summary-preview' ), $summary );
2302         }
2303
2304         protected function showFormBeforeText() {
2305                 global $wgOut;
2306                 $section = htmlspecialchars( $this->section );
2307                 $wgOut->addHTML( <<<HTML
2308 <input type='hidden' value="{$section}" name="wpSection" />
2309 <input type='hidden' value="{$this->starttime}" name="wpStarttime" />
2310 <input type='hidden' value="{$this->edittime}" name="wpEdittime" />
2311 <input type='hidden' value="{$this->scrolltop}" name="wpScrolltop" id="wpScrolltop" />
2312
2313 HTML
2314                 );
2315                 if ( !$this->checkUnicodeCompliantBrowser() )
2316                         $wgOut->addHTML( Html::hidden( 'safemode', '1' ) );
2317         }
2318
2319         protected function showFormAfterText() {
2320                 global $wgOut, $wgUser;
2321                 /**
2322                  * To make it harder for someone to slip a user a page
2323                  * which submits an edit form to the wiki without their
2324                  * knowledge, a random token is associated with the login
2325                  * session. If it's not passed back with the submission,
2326                  * we won't save the page, or render user JavaScript and
2327                  * CSS previews.
2328                  *
2329                  * For anon editors, who may not have a session, we just
2330                  * include the constant suffix to prevent editing from
2331                  * broken text-mangling proxies.
2332                  */
2333                 $wgOut->addHTML( "\n" . Html::hidden( "wpEditToken", $wgUser->getEditToken() ) . "\n" );
2334         }
2335
2336         /**
2337          * Subpage overridable method for printing the form for page content editing
2338          * By default this simply outputs wpTextbox1
2339          * Subclasses can override this to provide a custom UI for editing;
2340          * be it a form, or simply wpTextbox1 with a modified content that will be
2341          * reverse modified when extracted from the post data.
2342          * Note that this is basically the inverse for importContentFormData
2343          */
2344         protected function showContentForm() {
2345                 $this->showTextbox1();
2346         }
2347
2348         /**
2349          * Method to output wpTextbox1
2350          * The $textoverride method can be used by subclasses overriding showContentForm
2351          * to pass back to this method.
2352          *
2353          * @param $customAttribs array of html attributes to use in the textarea
2354          * @param $textoverride String: optional text to override $this->textarea1 with
2355          */
2356         protected function showTextbox1( $customAttribs = null, $textoverride = null ) {
2357                 if ( $this->wasDeletedSinceLastEdit() && $this->formtype == 'save' ) {
2358                         $attribs = array( 'style' => 'display:none;' );
2359                 } else {
2360                         $classes = array(); // Textarea CSS
2361                         if ( $this->mTitle->getNamespace() != NS_MEDIAWIKI && $this->mTitle->isProtected( 'edit' ) ) {
2362                                 # Is the title semi-protected?
2363                                 if ( $this->mTitle->isSemiProtected() ) {
2364                                         $classes[] = 'mw-textarea-sprotected';
2365                                 } else {
2366                                         # Then it must be protected based on static groups (regular)
2367                                         $classes[] = 'mw-textarea-protected';
2368                                 }
2369                                 # Is the title cascade-protected?
2370                                 if ( $this->mTitle->isCascadeProtected() ) {
2371                                         $classes[] = 'mw-textarea-cprotected';
2372                                 }
2373                         }
2374
2375                         $attribs = array( 'tabindex' => 1 );
2376
2377                         if ( is_array( $customAttribs ) ) {
2378                                 $attribs += $customAttribs;
2379                         }
2380
2381                         if ( count( $classes ) ) {
2382                                 if ( isset( $attribs['class'] ) ) {
2383                                         $classes[] = $attribs['class'];
2384                                 }
2385                                 $attribs['class'] = implode( ' ', $classes );
2386                         }
2387                 }
2388
2389                 $this->showTextbox( $textoverride !== null ? $textoverride : $this->textbox1, 'wpTextbox1', $attribs );
2390         }
2391
2392         protected function showTextbox2() {
2393                 $this->showTextbox( $this->textbox2, 'wpTextbox2', array( 'tabindex' => 6, 'readonly' ) );
2394         }
2395
2396         protected function showTextbox( $text, $name, $customAttribs = array() ) {
2397                 global $wgOut, $wgUser;
2398
2399                 $wikitext = $this->safeUnicodeOutput( $text );
2400                 if ( strval( $wikitext ) !== '' ) {
2401                         // Ensure there's a newline at the end, otherwise adding lines
2402                         // is awkward.
2403                         // But don't add a newline if the ext is empty, or Firefox in XHTML
2404                         // mode will show an extra newline. A bit annoying.
2405                         $wikitext .= "\n";
2406                 }
2407
2408                 $attribs = $customAttribs + array(
2409                         'accesskey' => ',',
2410                         'id'   => $name,
2411                         'cols' => $wgUser->getIntOption( 'cols' ),
2412                         'rows' => $wgUser->getIntOption( 'rows' ),
2413                         'style' => '' // avoid php notices when appending preferences (appending allows customAttribs['style'] to still work
2414                 );
2415
2416                 $pageLang = $this->mTitle->getPageLanguage();
2417                 $attribs['lang'] = $pageLang->getCode();
2418                 $attribs['dir'] = $pageLang->getDir();
2419
2420                 $wgOut->addHTML( Html::textarea( $name, $wikitext, $attribs ) );
2421         }
2422
2423         protected function displayPreviewArea( $previewOutput, $isOnTop = false ) {
2424                 global $wgOut;
2425                 $classes = array();
2426                 if ( $isOnTop )
2427                         $classes[] = 'ontop';
2428
2429                 $attribs = array( 'id' => 'wikiPreview', 'class' => implode( ' ', $classes ) );
2430
2431                 if ( $this->formtype != 'preview' )
2432                         $attribs['style'] = 'display: none;';
2433
2434                 $wgOut->addHTML( Xml::openElement( 'div', $attribs ) );
2435
2436                 if ( $this->formtype == 'preview' ) {
2437                         $this->showPreview( $previewOutput );
2438                 }
2439
2440                 $wgOut->addHTML( '</div>' );
2441
2442                 if ( $this->formtype == 'diff' ) {
2443                         $this->showDiff();
2444                 }
2445         }
2446
2447         /**
2448          * Append preview output to $wgOut.
2449          * Includes category rendering if this is a category page.
2450          *
2451          * @param $text String: the HTML to be output for the preview.
2452          */
2453         protected function showPreview( $text ) {
2454                 global $wgOut;
2455                 if ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
2456                         $this->mArticle->openShowCategory();
2457                 }
2458                 # This hook seems slightly odd here, but makes things more
2459                 # consistent for extensions.
2460                 wfRunHooks( 'OutputPageBeforeHTML', array( &$wgOut, &$text ) );
2461                 $wgOut->addHTML( $text );
2462                 if ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
2463                         $this->mArticle->closeShowCategory();
2464                 }
2465         }
2466
2467         /**
2468          * Get a diff between the current contents of the edit box and the
2469          * version of the page we're editing from.
2470          *
2471          * If this is a section edit, we'll replace the section as for final
2472          * save and then make a comparison.
2473          */
2474         function showDiff() {
2475                 global $wgUser, $wgContLang, $wgParser, $wgOut;
2476
2477         $oldContent = $this->getOriginalContent();
2478
2479         $textboxContent = ContentHandler::makeContent( $this->textbox1, $this->getTitle(),
2480                                                                                                                 $this->content_model, $this->content_format ); #XXX: handle parse errors ?
2481
2482         $newContent = $this->mArticle->replaceSectionContent(
2483                                                     $this->section, $textboxContent,
2484                                                     $this->summary, $this->edittime );
2485
2486         # hanlde legacy text-based hook
2487         $newtext_orig = $newContent->serialize( $this->content_format );
2488         $newtext = $newtext_orig; #clone
2489         wfRunHooks( 'EditPageGetDiffText', array( $this, &$newtext ) );
2490
2491                 if ( $newtext != $newtext_orig ) {
2492                                 #if the hook changed the text, create a new Content object accordingly.
2493                                 $newContent = ContentHandler::makeContent( $newtext, $this->getTitle(), $newContent->getModelName() ); #XXX: handle parse errors ?
2494                 }
2495
2496                 wfRunHooks( 'EditPageGetDiffContent', array( $this, &$newContent ) ); #FIXME: document new hook
2497
2498                 $popts = ParserOptions::newFromUserAndLang( $wgUser, $wgContLang );
2499         $newContent = $newContent->preSaveTransform( $this->mTitle, $wgUser, $popts );
2500
2501         if ( ( $oldContent && !$oldContent->isEmpty() ) || ( $newContent && !$newContent->isEmpty() ) ) {
2502                         $oldtitle = wfMsgExt( 'currentrev', array( 'parseinline' ) );
2503                         $newtitle = wfMsgExt( 'yourtext', array( 'parseinline' ) );
2504
2505             $de = $oldContent->getContentHandler()->getDifferenceEngine( $this->mArticle->getContext() );
2506             $de->setContent( $oldContent, $newContent );
2507
2508                         $difftext = $de->getDiff( $oldtitle, $newtitle );
2509                         $de->showDiffStyle();
2510                 } else {
2511                         $difftext = '';
2512                 }
2513
2514                 $wgOut->addHTML( '<div id="wikiDiff">' . $difftext . '</div>' );
2515         }
2516
2517         /**
2518          * Give a chance for site and per-namespace customizations of
2519          * terms of service summary link that might exist separately
2520          * from the copyright notice.
2521          *
2522          * This will display between the save button and the edit tools,
2523          * so should remain short!
2524          */
2525         protected function showTosSummary() {
2526                 $msg = 'editpage-tos-summary';
2527                 wfRunHooks( 'EditPageTosSummary', array( $this->mTitle, &$msg ) );
2528                 if ( !wfMessage( $msg )->isDisabled() ) {
2529                         global $wgOut;
2530                         $wgOut->addHTML( '<div class="mw-tos-summary">' );
2531                         $wgOut->addWikiMsg( $msg );
2532                         $wgOut->addHTML( '</div>' );
2533                 }
2534         }
2535
2536         protected function showEditTools() {
2537                 global $wgOut;
2538                 $wgOut->addHTML( '<div class="mw-editTools">' .
2539                         wfMessage( 'edittools' )->inContentLanguage()->parse() .
2540                         '</div>' );
2541         }
2542
2543         protected function getCopywarn() {
2544                 global $wgRightsText;
2545                 if ( $wgRightsText ) {
2546                         $copywarnMsg = array( 'copyrightwarning',
2547                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
2548                                 $wgRightsText );
2549                 } else {
2550                         $copywarnMsg = array( 'copyrightwarning2',
2551                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]' );
2552                 }
2553                 // Allow for site and per-namespace customization of contribution/copyright notice.
2554                 wfRunHooks( 'EditPageCopyrightWarning', array( $this->mTitle, &$copywarnMsg ) );
2555
2556                 return "<div id=\"editpage-copywarn\">\n" .
2557                         call_user_func_array( "wfMsgNoTrans", $copywarnMsg ) . "\n</div>";
2558         }
2559
2560         protected function showStandardInputs( &$tabindex = 2 ) {
2561                 global $wgOut;
2562                 $wgOut->addHTML( "<div class='editOptions'>\n" );
2563
2564                 if ( $this->section != 'new' ) {
2565                         $this->showSummaryInput( false, $this->summary );
2566                         $wgOut->addHTML( $this->getSummaryPreview( false, $this->summary ) );
2567                 }
2568
2569                 $checkboxes = $this->getCheckboxes( $tabindex,
2570                         array( 'minor' => $this->minoredit, 'watch' => $this->watchthis ) );
2571                 $wgOut->addHTML( "<div class='editCheckboxes'>" . implode( $checkboxes, "\n" ) . "</div>\n" );
2572                 $wgOut->addHTML( "<div class='editButtons'>\n" );
2573                 $wgOut->addHTML( implode( $this->getEditButtons( $tabindex ), "\n" ) . "\n" );
2574
2575                 $cancel = $this->getCancelLink();
2576                 if ( $cancel !== '' ) {
2577                         $cancel .= wfMsgExt( 'pipe-separator' , 'escapenoentities' );
2578                 }
2579                 $edithelpurl = Skin::makeInternalOrExternalUrl( wfMsgForContent( 'edithelppage' ) );
2580                 $edithelp = '<a target="helpwindow" href="' . $edithelpurl . '">' .
2581                         htmlspecialchars( wfMsg( 'edithelp' ) ) . '</a> ' .
2582                         htmlspecialchars( wfMsg( 'newwindow' ) );
2583                 $wgOut->addHTML( "      <span class='editHelp'>{$cancel}{$edithelp}</span>\n" );
2584                 $wgOut->addHTML( "</div><!-- editButtons -->\n</div><!-- editOptions -->\n" );
2585         }
2586
2587         /**
2588          * Show an edit conflict. textbox1 is already shown in showEditForm().
2589          * If you want to use another entry point to this function, be careful.
2590          */
2591         protected function showConflict() {
2592                 global $wgOut;
2593
2594                 if ( wfRunHooks( 'EditPageBeforeConflictDiff', array( &$this, &$wgOut ) ) ) {
2595                         $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
2596
2597                         $content1 = ContentHandler::makeContent( $this->textbox1, $this->getTitle(), $this->content_model, $this->content_format ); #XXX: handle parse errors?
2598                         $content2 = ContentHandler::makeContent( $this->textbox2, $this->getTitle(), $this->content_model, $this->content_format ); #XXX: handle parse errors?
2599
2600                         $handler = ContentHandler::getForModelName( $this->content_model );
2601                         $de = $handler->createDifferenceEngine( $this->mArticle->getContext() );
2602                         $de->setContent( $content2, $content1 );
2603                         $de->showDiff( wfMsgExt( 'yourtext', 'parseinline' ), wfMsg( 'storedversion' ) );
2604
2605                         $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
2606                         $this->showTextbox2();
2607                 }
2608         }
2609
2610         /**
2611          * @return string
2612          */
2613         public function getCancelLink() {
2614                 $cancelParams = array();
2615                 if ( !$this->isConflict && $this->oldid > 0 ) {
2616                         $cancelParams['oldid'] = $this->oldid;
2617                 }
2618
2619                 return Linker::linkKnown(
2620                         $this->getContextTitle(),
2621                         wfMsgExt( 'cancel', array( 'parseinline' ) ),
2622                         array( 'id' => 'mw-editform-cancel' ),
2623                         $cancelParams
2624                 );
2625         }
2626
2627         /**
2628          * Returns the URL to use in the form's action attribute.
2629          * This is used by EditPage subclasses when simply customizing the action
2630          * variable in the constructor is not enough. This can be used when the
2631          * EditPage lives inside of a Special page rather than a custom page action.
2632          *
2633          * @param $title Title object for which is being edited (where we go to for &action= links)
2634          * @return string
2635          */
2636         protected function getActionURL( Title $title ) {
2637                 return $title->getLocalURL( array( 'action' => $this->action ) );
2638         }
2639
2640         /**
2641          * Check if a page was deleted while the user was editing it, before submit.
2642          * Note that we rely on the logging table, which hasn't been always there,
2643          * but that doesn't matter, because this only applies to brand new
2644          * deletes.
2645          */
2646         protected function wasDeletedSinceLastEdit() {
2647                 if ( $this->deletedSinceEdit !== null ) {
2648                         return $this->deletedSinceEdit;
2649                 }
2650
2651                 $this->deletedSinceEdit = false;
2652
2653                 if ( $this->mTitle->isDeletedQuick() ) {
2654                         $this->lastDelete = $this->getLastDelete();
2655                         if ( $this->lastDelete ) {
2656                                 $deleteTime = wfTimestamp( TS_MW, $this->lastDelete->log_timestamp );
2657                                 if ( $deleteTime > $this->starttime ) {
2658                                         $this->deletedSinceEdit = true;
2659                                 }
2660                         }
2661                 }
2662
2663                 return $this->deletedSinceEdit;
2664         }
2665
2666         protected function getLastDelete() {
2667                 $dbr = wfGetDB( DB_SLAVE );
2668                 $data = $dbr->selectRow(
2669                         array( 'logging', 'user' ),
2670                         array( 'log_type',
2671                                    'log_action',
2672                                    'log_timestamp',
2673                                    'log_user',
2674                                    'log_namespace',
2675                                    'log_title',
2676                                    'log_comment',
2677                                    'log_params',
2678                                    'log_deleted',
2679                                    'user_name' ),
2680                         array( 'log_namespace' => $this->mTitle->getNamespace(),
2681                                    'log_title' => $this->mTitle->getDBkey(),
2682                                    'log_type' => 'delete',
2683                                    'log_action' => 'delete',
2684                                    'user_id=log_user' ),
2685                         __METHOD__,
2686                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' )
2687                 );
2688                 // Quick paranoid permission checks...
2689                 if ( is_object( $data ) ) {
2690                         if ( $data->log_deleted & LogPage::DELETED_USER )
2691                                 $data->user_name = wfMsgHtml( 'rev-deleted-user' );
2692                         if ( $data->log_deleted & LogPage::DELETED_COMMENT )
2693                                 $data->log_comment = wfMsgHtml( 'rev-deleted-comment' );
2694                 }
2695                 return $data;
2696         }
2697
2698         /**
2699          * Get the rendered text for previewing.
2700          * @return string
2701          */
2702         function getPreviewText() {
2703                 global $wgOut, $wgUser, $wgParser, $wgRawHtml;
2704
2705                 wfProfileIn( __METHOD__ );
2706
2707                 if ( $wgRawHtml && !$this->mTokenOk ) {
2708                         // Could be an offsite preview attempt. This is very unsafe if
2709                         // HTML is enabled, as it could be an attack.
2710                         $parsedNote = '';
2711                         if ( $this->textbox1 !== '' ) {
2712                                 // Do not put big scary notice, if previewing the empty
2713                                 // string, which happens when you initially edit
2714                                 // a category page, due to automatic preview-on-open.
2715                                 $parsedNote = $wgOut->parse( "<div class='previewnote'>" .
2716                                         wfMsg( 'session_fail_preview_html' ) . "</div>", true, /* interface */true );
2717                         }
2718                         wfProfileOut( __METHOD__ );
2719                         return $parsedNote;
2720                 }
2721
2722         try {
2723             $content = ContentHandler::makeContent( $this->textbox1, $this->getTitle(), $this->content_model, $this->content_format );
2724
2725             if ( $this->mTriedSave && !$this->mTokenOk ) {
2726                 if ( $this->mTokenOkExceptSuffix ) {
2727                     $note = wfMsg( 'token_suffix_mismatch' );
2728                 } else {
2729                     $note = wfMsg( 'session_fail_preview' );
2730                 }
2731             } elseif ( $this->incompleteForm ) {
2732                 $note = wfMsg( 'edit_form_incomplete' );
2733             } elseif ( $this->isCssJsSubpage || $this->mTitle->isCssOrJsPage() ) {
2734                 # if this is a CSS or JS page used in the UI, show a special notice
2735                 # 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?
2736
2737                 if( $this->mTitle->isCssJsSubpage() ) {
2738                     $level = 'user';
2739                 } elseif( $this->mTitle->isCssOrJsPage() ) {
2740                     $level = 'site';
2741                 } else {
2742                     $level = false;
2743                 }
2744
2745                 if ( $content->getModelName() == CONTENT_MODEL_CSS ) {
2746                     $format = 'css';
2747                 } elseif ( $content->getModelName() == CONTENT_MODEL_JAVASCRIPT ) {
2748                     $format = 'js';
2749                 } else {
2750                     $format = false;
2751                 }
2752
2753                 # Used messages to make sure grep find them:
2754                 # Messages: usercsspreview, userjspreview, sitecsspreview, sitejspreview
2755                 if( $level && $format ) {
2756                     $note = "<div id='mw-{$level}{$format}preview'>" . wfMsg( "{$level}{$format}preview" ) . "</div>";
2757                 } else {
2758                     $note = wfMsg( 'previewnote' );
2759                 }
2760             } else {
2761                 $note = wfMsg( 'previewnote' );
2762             }
2763
2764             $parserOptions = ParserOptions::newFromUser( $wgUser );
2765             $parserOptions->setEditSection( false );
2766             $parserOptions->setTidy( true );
2767             $parserOptions->setIsPreview( true );
2768             $parserOptions->setIsSectionPreview( !is_null($this->section) && $this->section !== '' );
2769
2770             $rt = $content->getRedirectChain();
2771
2772             if ( $rt ) {
2773                 $previewHTML = $this->mArticle->viewRedirect( $rt, false );
2774             } else {
2775
2776                 # If we're adding a comment, we need to show the
2777                 # summary as the headline
2778                 if ( $this->section == "new" && $this->summary != "" ) {
2779                     $content = $content->addSectionHeader( $this->summary );
2780                 }
2781
2782                 $toparse_orig = $content->serialize( $this->content_format );
2783                 $toparse = $toparse_orig;
2784                 wfRunHooks( 'EditPageGetPreviewText', array( $this, &$toparse ) );
2785
2786                 if ( $toparse !== $toparse_orig ) {
2787                     #hook changed the text, create new Content object
2788                     $content = ContentHandler::makeContent( $toparse, $this->getTitle(), $this->content_model, $this->content_format );
2789                 }
2790
2791                 wfRunHooks( 'EditPageGetPreviewContent', array( $this, &$content ) ); # FIXME: document new hook
2792
2793                 $parserOptions->enableLimitReport();
2794
2795                 #XXX: For CSS/JS pages, we should have called the ShowRawCssJs hook here. But it's now deprecated, so never mind
2796                 $content = $content->preSaveTransform( $this->mTitle, $wgUser, $parserOptions );
2797
2798                                 // TODO: might be a saner way to get a meaningfull context here?
2799                 $parserOutput = $content->getParserOutput( $this->getArticle()->getContext(), null, $parserOptions );
2800
2801                 $previewHTML = $parserOutput->getText();
2802                 $this->mParserOutput = $parserOutput;
2803                 $wgOut->addParserOutputNoText( $parserOutput );
2804
2805                 if ( count( $parserOutput->getWarnings() ) ) {
2806                     $note .= "\n\n" . implode( "\n\n", $parserOutput->getWarnings() );
2807                 }
2808             }
2809         } catch (MWContentSerializationException $ex) {
2810             $note .= "\n\n" . wfMsg('content-failed-to-parse', $this->content_model, $this->content_format, $ex->getMessage() );
2811             $previewHTML = '';
2812         }
2813
2814                 if ( $this->isConflict ) {
2815                         $conflict = '<h2 id="mw-previewconflict">' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
2816                 } else {
2817                         $conflict = '<hr />';
2818                 }
2819
2820                 $previewhead = "<div class='previewnote'>\n" .
2821                         '<h2 id="mw-previewheader">' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>" .
2822                         $wgOut->parse( $note, true, /* interface */true ) . $conflict . "</div>\n";
2823
2824                 $pageLang = $this->mTitle->getPageLanguage();
2825                 $attribs = array( 'lang' => $pageLang->getCode(), 'dir' => $pageLang->getDir(),
2826                         'class' => 'mw-content-' . $pageLang->getDir() );
2827                 $previewHTML = Html::rawElement( 'div', $attribs, $previewHTML );
2828
2829                 wfProfileOut( __METHOD__ );
2830                 return $previewhead . $previewHTML . $this->previewTextAfterContent;
2831         }
2832
2833         /**
2834          * @return Array
2835          */
2836         function getTemplates() {
2837                 if ( $this->preview || $this->section != '' ) {
2838                         $templates = array();
2839                         if ( !isset( $this->mParserOutput ) ) {
2840                                 return $templates;
2841                         }
2842                         foreach ( $this->mParserOutput->getTemplates() as $ns => $template ) {
2843                                 foreach ( array_keys( $template ) as $dbk ) {
2844                                         $templates[] = Title::makeTitle( $ns, $dbk );
2845                                 }
2846                         }
2847                         return $templates;
2848                 } else {
2849                         return $this->mTitle->getTemplateLinksFrom();
2850                 }
2851         }
2852
2853         /**
2854          * Shows a bulletin board style toolbar for common editing functions.
2855          * It can be disabled in the user preferences.
2856          * The necessary JavaScript code can be found in skins/common/edit.js.
2857          *
2858          * @return string
2859          */
2860         static function getEditToolbar() {
2861                 global $wgStylePath, $wgContLang, $wgLang, $wgOut;
2862                 global $wgUseTeX, $wgEnableUploads, $wgForeignFileRepos;
2863
2864                 $imagesAvailable = $wgEnableUploads || count( $wgForeignFileRepos );
2865
2866                 /**
2867                  * $toolarray is an array of arrays each of which includes the
2868                  * filename of the button image (without path), the opening
2869                  * tag, the closing tag, optionally a sample text that is
2870                  * inserted between the two when no selection is highlighted
2871                  * and.  The tip text is shown when the user moves the mouse
2872                  * over the button.
2873                  *
2874                  * Also here: accesskeys (key), which are not used yet until
2875                  * someone can figure out a way to make them work in
2876                  * IE. However, we should make sure these keys are not defined
2877                  * on the edit page.
2878                  */
2879                 $toolarray = array(
2880                         array(
2881                                 'image'  => $wgLang->getImageFile( 'button-bold' ),
2882                                 'id'     => 'mw-editbutton-bold',
2883                                 'open'   => '\'\'\'',
2884                                 'close'  => '\'\'\'',
2885                                 'sample' => wfMsg( 'bold_sample' ),
2886                                 'tip'    => wfMsg( 'bold_tip' ),
2887                                 'key'    => 'B'
2888                         ),
2889                         array(
2890                                 'image'  => $wgLang->getImageFile( 'button-italic' ),
2891                                 'id'     => 'mw-editbutton-italic',
2892                                 'open'   => '\'\'',
2893                                 'close'  => '\'\'',
2894                                 'sample' => wfMsg( 'italic_sample' ),
2895                                 'tip'    => wfMsg( 'italic_tip' ),
2896                                 'key'    => 'I'
2897                         ),
2898                         array(
2899                                 'image'  => $wgLang->getImageFile( 'button-link' ),
2900                                 'id'     => 'mw-editbutton-link',
2901                                 'open'   => '[[',
2902                                 'close'  => ']]',
2903                                 'sample' => wfMsg( 'link_sample' ),
2904                                 'tip'    => wfMsg( 'link_tip' ),
2905                                 'key'    => 'L'
2906                         ),
2907                         array(
2908                                 'image'  => $wgLang->getImageFile( 'button-extlink' ),
2909                                 'id'     => 'mw-editbutton-extlink',
2910                                 'open'   => '[',
2911                                 'close'  => ']',
2912                                 'sample' => wfMsg( 'extlink_sample' ),
2913                                 'tip'    => wfMsg( 'extlink_tip' ),
2914                                 'key'    => 'X'
2915                         ),
2916                         array(
2917                                 'image'  => $wgLang->getImageFile( 'button-headline' ),
2918                                 'id'     => 'mw-editbutton-headline',
2919                                 'open'   => "\n== ",
2920                                 'close'  => " ==\n",
2921                                 'sample' => wfMsg( 'headline_sample' ),
2922                                 'tip'    => wfMsg( 'headline_tip' ),
2923                                 'key'    => 'H'
2924                         ),
2925                         $imagesAvailable ? array(
2926                                 'image'  => $wgLang->getImageFile( 'button-image' ),
2927                                 'id'     => 'mw-editbutton-image',
2928                                 'open'   => '[[' . $wgContLang->getNsText( NS_FILE ) . ':',
2929                                 'close'  => ']]',
2930                                 'sample' => wfMsg( 'image_sample' ),
2931                                 'tip'    => wfMsg( 'image_tip' ),
2932                                 'key'    => 'D',
2933                         ) : false,
2934                         $imagesAvailable ? array(
2935                                 'image'  => $wgLang->getImageFile( 'button-media' ),
2936                                 'id'     => 'mw-editbutton-media',
2937                                 'open'   => '[[' . $wgContLang->getNsText( NS_MEDIA ) . ':',
2938                                 'close'  => ']]',
2939                                 'sample' => wfMsg( 'media_sample' ),
2940                                 'tip'    => wfMsg( 'media_tip' ),
2941                                 'key'    => 'M'
2942                         ) : false,
2943                         $wgUseTeX ? array(
2944                                 'image'  => $wgLang->getImageFile( 'button-math' ),
2945                                 'id'     => 'mw-editbutton-math',
2946                                 'open'   => "<math>",
2947                                 'close'  => "</math>",
2948                                 'sample' => wfMsg( 'math_sample' ),
2949                                 'tip'    => wfMsg( 'math_tip' ),
2950                                 'key'    => 'C'
2951                         ) : false,
2952                         array(
2953                                 'image'  => $wgLang->getImageFile( 'button-nowiki' ),
2954                                 'id'     => 'mw-editbutton-nowiki',
2955                                 'open'   => "<nowiki>",
2956                                 'close'  => "</nowiki>",
2957                                 'sample' => wfMsg( 'nowiki_sample' ),
2958                                 'tip'    => wfMsg( 'nowiki_tip' ),
2959                                 'key'    => 'N'
2960                         ),
2961                         array(
2962                                 'image'  => $wgLang->getImageFile( 'button-sig' ),
2963                                 'id'     => 'mw-editbutton-signature',
2964                                 'open'   => '--~~~~',
2965                                 'close'  => '',
2966                                 'sample' => '',
2967                                 'tip'    => wfMsg( 'sig_tip' ),
2968                                 'key'    => 'Y'
2969                         ),
2970                         array(
2971                                 'image'  => $wgLang->getImageFile( 'button-hr' ),
2972                                 'id'     => 'mw-editbutton-hr',
2973                                 'open'   => "\n----\n",
2974                                 'close'  => '',
2975                                 'sample' => '',
2976                                 'tip'    => wfMsg( 'hr_tip' ),
2977                                 'key'    => 'R'
2978                         )
2979                 );
2980
2981                 $script = 'mw.loader.using("mediawiki.action.edit", function() {';
2982                 foreach ( $toolarray as $tool ) {
2983                         if ( !$tool ) {
2984                                 continue;
2985                         }
2986
2987                         $params = array(
2988                                 $image = $wgStylePath . '/common/images/' . $tool['image'],
2989                                 // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
2990                                 // Older browsers show a "speedtip" type message only for ALT.
2991                                 // Ideally these should be different, realistically they
2992                                 // probably don't need to be.
2993                                 $tip = $tool['tip'],
2994                                 $open = $tool['open'],
2995                                 $close = $tool['close'],
2996                                 $sample = $tool['sample'],
2997                                 $cssId = $tool['id'],
2998                         );
2999
3000                         $script .= Xml::encodeJsCall( 'mw.toolbar.addButton', $params );
3001                 }
3002
3003                 // This used to be called on DOMReady from mediawiki.action.edit, which
3004                 // ended up causing race conditions with the setup code above.
3005                 $script .= "\n" .
3006                         "// Create button bar\n" .
3007                         "$(function() { mw.toolbar.init(); } );\n";
3008
3009                 $script .= '});';
3010                 $wgOut->addScript( Html::inlineScript( ResourceLoader::makeLoaderConditionalScript( $script ) ) );
3011
3012                 $toolbar = '<div id="toolbar"></div>';
3013
3014                 wfRunHooks( 'EditPageBeforeEditToolbar', array( &$toolbar ) );
3015
3016                 return $toolbar;
3017         }
3018
3019         /**
3020          * Returns an array of html code of the following checkboxes:
3021          * minor and watch
3022          *
3023          * @param $tabindex int Current tabindex
3024          * @param $checked Array of checkbox => bool, where bool indicates the checked
3025          *                 status of the checkbox
3026          *
3027          * @return array
3028          */
3029         public function getCheckboxes( &$tabindex, $checked ) {
3030                 global $wgUser;
3031
3032                 $checkboxes = array();
3033
3034                 // don't show the minor edit checkbox if it's a new page or section
3035                 if ( !$this->isNew ) {
3036                         $checkboxes['minor'] = '';
3037                         $minorLabel = wfMsgExt( 'minoredit', array( 'parseinline' ) );
3038                         if ( $wgUser->isAllowed( 'minoredit' ) ) {
3039                                 $attribs = array(
3040                                         'tabindex'  => ++$tabindex,
3041                                         'accesskey' => wfMsg( 'accesskey-minoredit' ),
3042                                         'id'        => 'wpMinoredit',
3043                                 );
3044                                 $checkboxes['minor'] =
3045                                         Xml::check( 'wpMinoredit', $checked['minor'], $attribs ) .
3046                                         "&#160;<label for='wpMinoredit' id='mw-editpage-minoredit'" .
3047                                         Xml::expandAttributes( array( 'title' => Linker::titleAttrib( 'minoredit', 'withaccess' ) ) ) .
3048                                         ">{$minorLabel}</label>";
3049                         }
3050                 }
3051
3052                 $watchLabel = wfMsgExt( 'watchthis', array( 'parseinline' ) );
3053                 $checkboxes['watch'] = '';
3054                 if ( $wgUser->isLoggedIn() ) {
3055                         $attribs = array(
3056                                 'tabindex'  => ++$tabindex,
3057                                 'accesskey' => wfMsg( 'accesskey-watch' ),
3058                                 'id'        => 'wpWatchthis',
3059                         );
3060                         $checkboxes['watch'] =
3061                                 Xml::check( 'wpWatchthis', $checked['watch'], $attribs ) .
3062                                 "&#160;<label for='wpWatchthis' id='mw-editpage-watch'" .
3063                                 Xml::expandAttributes( array( 'title' => Linker::titleAttrib( 'watch', 'withaccess' ) ) ) .
3064                                 ">{$watchLabel}</label>";
3065                 }
3066                 wfRunHooks( 'EditPageBeforeEditChecks', array( &$this, &$checkboxes, &$tabindex ) );
3067                 return $checkboxes;
3068         }
3069
3070         /**
3071          * Returns an array of html code of the following buttons:
3072          * save, diff, preview and live
3073          *
3074          * @param $tabindex int Current tabindex
3075          *
3076          * @return array
3077          */
3078         public function getEditButtons( &$tabindex ) {
3079                 $buttons = array();
3080
3081                 $temp = array(
3082                         'id'        => 'wpSave',
3083                         'name'      => 'wpSave',
3084                         'type'      => 'submit',
3085                         'tabindex'  => ++$tabindex,
3086                         'value'     => wfMsg( 'savearticle' ),
3087                         'accesskey' => wfMsg( 'accesskey-save' ),
3088                         'title'     => wfMsg( 'tooltip-save' ) . ' [' . wfMsg( 'accesskey-save' ) . ']',
3089                 );
3090                 $buttons['save'] = Xml::element( 'input', $temp, '' );
3091
3092                 ++$tabindex; // use the same for preview and live preview
3093                 $temp = array(
3094                         'id'        => 'wpPreview',
3095                         'name'      => 'wpPreview',
3096                         'type'      => 'submit',
3097                         'tabindex'  => $tabindex,
3098                         'value'     => wfMsg( 'showpreview' ),
3099                         'accesskey' => wfMsg( 'accesskey-preview' ),
3100                         'title'     => wfMsg( 'tooltip-preview' ) . ' [' . wfMsg( 'accesskey-preview' ) . ']',
3101                 );
3102                 $buttons['preview'] = Xml::element( 'input', $temp, '' );
3103                 $buttons['live'] = '';
3104
3105                 $temp = array(
3106                         'id'        => 'wpDiff',
3107                         'name'      => 'wpDiff',
3108                         'type'      => 'submit',
3109                         'tabindex'  => ++$tabindex,
3110                         'value'     => wfMsg( 'showdiff' ),
3111                         'accesskey' => wfMsg( 'accesskey-diff' ),
3112                         'title'     => wfMsg( 'tooltip-diff' ) . ' [' . wfMsg( 'accesskey-diff' ) . ']',
3113                 );
3114                 $buttons['diff'] = Xml::element( 'input', $temp, '' );
3115
3116                 wfRunHooks( 'EditPageBeforeEditButtons', array( &$this, &$buttons, &$tabindex ) );
3117                 return $buttons;
3118         }
3119
3120         /**
3121          * Output preview text only. This can be sucked into the edit page
3122          * via JavaScript, and saves the server time rendering the skin as
3123          * well as theoretically being more robust on the client (doesn't
3124          * disturb the edit box's undo history, won't eat your text on
3125          * failure, etc).
3126          *
3127          * @todo This doesn't include category or interlanguage links.
3128          *       Would need to enhance it a bit, <s>maybe wrap them in XML
3129          *       or something...</s> that might also require more skin
3130          *       initialization, so check whether that's a problem.
3131          */
3132         function livePreview() {
3133                 global $wgOut;
3134                 $wgOut->disable();
3135                 header( 'Content-type: text/xml; charset=utf-8' );
3136                 header( 'Cache-control: no-cache' );
3137
3138                 $previewText = $this->getPreviewText();
3139                 #$categories = $skin->getCategoryLinks();
3140
3141                 $s =
3142                 '<?xml version="1.0" encoding="UTF-8" ?>' . "\n" .
3143                 Xml::tags( 'livepreview', null,
3144                         Xml::element( 'preview', null, $previewText )
3145                         #.      Xml::element( 'category', null, $categories )
3146                 );
3147                 echo $s;
3148         }
3149
3150         /**
3151          * Call the stock "user is blocked" page
3152          *
3153          * @deprecated in 1.19; throw an exception directly instead
3154          */
3155         function blockedPage() {
3156                 wfDeprecated( __METHOD__, '1.19' );
3157                 global $wgUser;
3158
3159                 throw new UserBlockedError( $wgUser->getBlock() );
3160         }
3161
3162         /**
3163          * Produce the stock "please login to edit pages" page
3164          *
3165          * @deprecated in 1.19; throw an exception directly instead
3166          */
3167         function userNotLoggedInPage() {
3168                 wfDeprecated( __METHOD__, '1.19' );
3169                 throw new PermissionsError( 'edit' );
3170         }
3171
3172         /**
3173          * Show an error page saying to the user that he has insufficient permissions
3174          * to create a new page
3175          *
3176          * @deprecated in 1.19; throw an exception directly instead
3177          */
3178         function noCreatePermission() {
3179                 wfDeprecated( __METHOD__, '1.19' );
3180                 $permission = $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage';
3181                 throw new PermissionsError( $permission );
3182         }
3183
3184         /**
3185          * Creates a basic error page which informs the user that
3186          * they have attempted to edit a nonexistent section.
3187          */
3188         function noSuchSectionPage() {
3189                 global $wgOut;
3190
3191                 $wgOut->prepareErrorPage( wfMessage( 'nosuchsectiontitle' ) );
3192
3193                 $res = wfMsgExt( 'nosuchsectiontext', 'parse', $this->section );
3194                 wfRunHooks( 'EditPageNoSuchSection', array( &$this, &$res ) );
3195                 $wgOut->addHTML( $res );
3196
3197                 $wgOut->returnToMain( false, $this->mTitle );
3198         }
3199
3200         /**
3201          * Produce the stock "your edit contains spam" page
3202          *
3203          * @param $match string Text which triggered one or more filters
3204          * @deprecated since 1.17 Use method spamPageWithContent() instead
3205          */
3206         static function spamPage( $match = false ) {
3207                 wfDeprecated( __METHOD__, '1.17' );
3208
3209                 global $wgOut, $wgTitle;
3210
3211                 $wgOut->prepareErrorPage( wfMessage( 'spamprotectiontitle' ) );
3212
3213                 $wgOut->addHTML( '<div id="spamprotected">' );
3214                 $wgOut->addWikiMsg( 'spamprotectiontext' );
3215                 if ( $match ) {
3216                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
3217                 }
3218                 $wgOut->addHTML( '</div>' );
3219
3220                 $wgOut->returnToMain( false, $wgTitle );
3221         }
3222
3223         /**
3224          * Show "your edit contains spam" page with your diff and text
3225          *
3226          * @param $match string|Array|bool Text (or array of texts) which triggered one or more filters
3227          */
3228         public function spamPageWithContent( $match = false ) {
3229                 global $wgOut, $wgLang;
3230                 $this->textbox2 = $this->textbox1;
3231
3232                 if( is_array( $match ) ){
3233                         $match = $wgLang->listToText( $match );
3234                 }
3235                 $wgOut->prepareErrorPage( wfMessage( 'spamprotectiontitle' ) );
3236
3237                 $wgOut->addHTML( '<div id="spamprotected">' );
3238                 $wgOut->addWikiMsg( 'spamprotectiontext' );
3239                 if ( $match ) {
3240                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
3241                 }
3242                 $wgOut->addHTML( '</div>' );
3243
3244                 $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
3245                 $this->showDiff();
3246
3247                 $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
3248                 $this->showTextbox2();
3249
3250                 $wgOut->addReturnTo( $this->getContextTitle(), array( 'action' => 'edit' ) );
3251         }
3252
3253         /**
3254          * Format an anchor fragment as it would appear for a given section name
3255          * @param $text String
3256          * @return String
3257          * @private
3258          */
3259         function sectionAnchor( $text ) {
3260                 global $wgParser;
3261                 return $wgParser->guessSectionNameFromWikiText( $text );
3262         }
3263
3264         /**
3265          * Check if the browser is on a blacklist of user-agents known to
3266          * mangle UTF-8 data on form submission. Returns true if Unicode
3267          * should make it through, false if it's known to be a problem.
3268          * @return bool
3269          * @private
3270          */
3271         function checkUnicodeCompliantBrowser() {
3272                 global $wgBrowserBlackList;
3273                 if ( empty( $_SERVER["HTTP_USER_AGENT"] ) ) {
3274                         // No User-Agent header sent? Trust it by default...
3275                         return true;
3276                 }
3277                 $currentbrowser = $_SERVER["HTTP_USER_AGENT"];
3278                 foreach ( $wgBrowserBlackList as $browser ) {
3279                         if ( preg_match( $browser, $currentbrowser ) ) {
3280                                 return false;
3281                         }
3282                 }
3283                 return true;
3284         }
3285
3286         /**
3287          * Filter an input field through a Unicode de-armoring process if it
3288          * came from an old browser with known broken Unicode editing issues.
3289          *
3290          * @param $request WebRequest
3291          * @param $field String
3292          * @return String
3293          * @private
3294          */
3295         function safeUnicodeInput( $request, $field ) {
3296                 $text = rtrim( $request->getText( $field ) );
3297                 return $request->getBool( 'safemode' )
3298                         ? $this->unmakesafe( $text )
3299                         : $text;
3300         }
3301
3302         /**
3303          * @param $request WebRequest
3304          * @param $text string
3305          * @return string
3306          */
3307         function safeUnicodeText( $request, $text ) {
3308                 $text = rtrim( $text );
3309                 return $request->getBool( 'safemode' )
3310                         ? $this->unmakesafe( $text )
3311                         : $text;
3312         }
3313
3314         /**
3315          * Filter an output field through a Unicode armoring process if it is
3316          * going to an old browser with known broken Unicode editing issues.
3317          *
3318          * @param $text String
3319          * @return String
3320          * @private
3321          */
3322         function safeUnicodeOutput( $text ) {
3323                 global $wgContLang;
3324                 $codedText = $wgContLang->recodeForEdit( $text );
3325                 return $this->checkUnicodeCompliantBrowser()
3326                         ? $codedText
3327                         : $this->makesafe( $codedText );
3328         }
3329
3330         /**
3331          * A number of web browsers are known to corrupt non-ASCII characters
3332          * in a UTF-8 text editing environment. To protect against this,
3333          * detected browsers will be served an armored version of the text,
3334          * with non-ASCII chars converted to numeric HTML character references.
3335          *
3336          * Preexisting such character references will have a 0 added to them
3337          * to ensure that round-trips do not alter the original data.
3338          *
3339          * @param $invalue String
3340          * @return String
3341          * @private
3342          */
3343         function makesafe( $invalue ) {
3344                 // Armor existing references for reversability.
3345                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
3346
3347                 $bytesleft = 0;
3348                 $result = "";
3349                 $working = 0;
3350                 for ( $i = 0; $i < strlen( $invalue ); $i++ ) {
3351                         $bytevalue = ord( $invalue[$i] );
3352                         if ( $bytevalue <= 0x7F ) { // 0xxx xxxx
3353                                 $result .= chr( $bytevalue );
3354                                 $bytesleft = 0;
3355                         } elseif ( $bytevalue <= 0xBF ) { // 10xx xxxx
3356                                 $working = $working << 6;
3357                                 $working += ( $bytevalue & 0x3F );
3358                                 $bytesleft--;
3359                                 if ( $bytesleft <= 0 ) {
3360                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
3361                                 }
3362                         } elseif ( $bytevalue <= 0xDF ) { // 110x xxxx
3363                                 $working = $bytevalue & 0x1F;
3364                                 $bytesleft = 1;
3365                         } elseif ( $bytevalue <= 0xEF ) { // 1110 xxxx
3366                                 $working = $bytevalue & 0x0F;
3367                                 $bytesleft = 2;
3368                         } else { // 1111 0xxx
3369                                 $working = $bytevalue & 0x07;
3370                                 $bytesleft = 3;
3371                         }
3372                 }
3373                 return $result;
3374         }
3375
3376         /**
3377          * Reverse the previously applied transliteration of non-ASCII characters
3378          * back to UTF-8. Used to protect data from corruption by broken web browsers
3379          * as listed in $wgBrowserBlackList.
3380          *
3381          * @param $invalue String
3382          * @return String
3383          * @private
3384          */
3385         function unmakesafe( $invalue ) {
3386                 $result = "";
3387                 for ( $i = 0; $i < strlen( $invalue ); $i++ ) {
3388                         if ( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue[$i + 3] != '0' ) ) {
3389                                 $i += 3;
3390                                 $hexstring = "";
3391                                 do {
3392                                         $hexstring .= $invalue[$i];
3393                                         $i++;
3394                                 } while ( ctype_xdigit( $invalue[$i] ) && ( $i < strlen( $invalue ) ) );
3395
3396                                 // Do some sanity checks. These aren't needed for reversability,
3397                                 // but should help keep the breakage down if the editor
3398                                 // breaks one of the entities whilst editing.
3399                                 if ( ( substr( $invalue, $i, 1 ) == ";" ) and ( strlen( $hexstring ) <= 6 ) ) {
3400                                         $codepoint = hexdec( $hexstring );
3401                                         $result .= codepointToUtf8( $codepoint );
3402                                 } else {
3403                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
3404                                 }
3405                         } else {
3406                                 $result .= substr( $invalue, $i, 1 );
3407                         }
3408                 }
3409                 // reverse the transform that we made for reversability reasons.
3410                 return strtr( $result, array( "&#x0" => "&#x" ) );
3411         }
3412 }