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