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