includes/EditPage.php

   1 <?php
   2 /**
   3  * Contains the EditPage class
   4  * @file
   5  */
   6
   7 /**
   8  * The edit page/HTML interface (split from Article)
   9  * The actual database and text munging is still in Article,
  10  * but it should get easier to call those from alternate
  11  * interfaces.
  12  *
  13  * EditPage cares about two distinct titles:
  14  * $this->mContextTitle is the page that forms submit to, links point to,
  15  * redirects go to, etc. $this->mTitle (as well as $mArticle) is the
  16  * page in the database that is actually being edited. These are
  17  * usually the same, but they are now allowed to be different.
  18  *
  19  * Surgeon General's Warning: prolonged exposure to this class is known to cause
  20  * headaches, which may be fatal.
  21  */
  22 class EditPage {
  23
  24         /**
  25          * Status: Article successfully updated
  26          */
  27         const AS_SUCCESS_UPDATE            = 200;
  28
  29         /**
  30          * Status: Article successfully created
  31          */
  32         const AS_SUCCESS_NEW_ARTICLE       = 201;
  33
  34         /**
  35          * Status: Article update aborted by a hook function
  36          */
  37         const AS_HOOK_ERROR                = 210;
  38
  39         /**
  40          * Status: The filter function set in $wgFilterCallback returned true (= block it)
  41          */
  42         const AS_FILTERING                 = 211;
  43
  44         /**
  45          * Status: A hook function returned an error
  46          */
  47         const AS_HOOK_ERROR_EXPECTED       = 212;
  48
  49         /**
  50          * Status: User is blocked from editting this page
  51          */
  52         const AS_BLOCKED_PAGE_FOR_USER     = 215;
  53
  54         /**
  55          * Status: Content too big (> $wgMaxArticleSize)
  56          */
  57         const AS_CONTENT_TOO_BIG           = 216;
  58
  59         /**
  60          * Status: User cannot edit? (not used)
  61          */
  62         const AS_USER_CANNOT_EDIT          = 217;
  63
  64         /**
  65          * Status: this anonymous user is not allowed to edit this page
  66          */
  67         const AS_READ_ONLY_PAGE_ANON       = 218;
  68
  69         /**
  70          * Status: this logged in user is not allowed to edit this page
  71          */
  72         const AS_READ_ONLY_PAGE_LOGGED     = 219;
  73
  74         /**
  75          * Status: wiki is in readonly mode (wfReadOnly() == true)
  76          */
  77         const AS_READ_ONLY_PAGE            = 220;
  78
  79         /**
  80          * Status: rate limiter for action 'edit' was tripped
  81          */
  82         const AS_RATE_LIMITED              = 221;
  83
  84         /**
  85          * Status: article was deleted while editting and param wpRecreate == false or form
  86          * was not posted
  87          */
  88         const AS_ARTICLE_WAS_DELETED       = 222;
  89
  90         /**
  91          * Status: user tried to create this page, but is not allowed to do that
  92          * ( Title->usercan('create') == false )
  93          */
  94         const AS_NO_CREATE_PERMISSION      = 223;
  95
  96         /**
  97          * Status: user tried to create a blank page
  98          */
  99         const AS_BLANK_ARTICLE             = 224;
 100
 101         /**
 102          * Status: (non-resolvable) edit conflict
 103          */
 104         const AS_CONFLICT_DETECTED         = 225;
 105
 106         /**
 107          * Status: no edit summary given and the user has forceeditsummary set and the user is not
 108          * editting in his own userspace or talkspace and wpIgnoreBlankSummary == false
 109          */
 110         const AS_SUMMARY_NEEDED            = 226;
 111
 112         /**
 113          * Status: user tried to create a new section without content
 114          */
 115         const AS_TEXTBOX_EMPTY             = 228;
 116
 117         /**
 118          * Status: article is too big (> $wgMaxArticleSize), after merging in the new section
 119          */
 120         const AS_MAX_ARTICLE_SIZE_EXCEEDED = 229;
 121
 122         /**
 123          * not used
 124          */
 125         const AS_OK                        = 230;
 126
 127         /**
 128          * Status: WikiPage::doEdit() was unsuccessfull
 129          */
 130         const AS_END                       = 231;
 131
 132         /**
 133          * Status: summary contained spam according to one of the regexes in $wgSummarySpamRegex
 134          */
 135         const AS_SPAM_ERROR                = 232;
 136
 137         /**
 138          * Status: anonymous user is not allowed to upload (User::isAllowed('upload') == false)
 139          */
 140         const AS_IMAGE_REDIRECT_ANON       = 233;
 141
 142         /**
 143          * Status: logged in user is not allowed to upload (User::isAllowed('upload') == false)
 144          */
 145         const AS_IMAGE_REDIRECT_LOGGED     = 234;
 146
 147         /**
 148          * HTML id and name for the beginning of the edit form.
 149          */
 150         const EDITFORM_ID                  = 'editform';
 151
 152         /**
 153          * @var Article
 154          */
 155         var $mArticle;
 156
 157         /**
 158          * @var Title
 159          */
 160         var $mTitle;
 161         private $mContextTitle = null;
 162         var $action = 'submit';
 163         var $isConflict = false;
 164         var $isCssJsSubpage = false;
 165         var $isCssSubpage = false;
 166         var $isJsSubpage = false;
 167         var $isWrongCaseCssJsPage = false;
 168         var $isNew = false; // new page or new section
 169         var $deletedSinceEdit;
 170         var $formtype;
 171         var $firsttime;
 172         var $lastDelete;
 173         var $mTokenOk = false;
 174         var $mTokenOkExceptSuffix = false;
 175         var $mTriedSave = false;
 176         var $incompleteForm = false;
 177         var $tooBig = false;
 178         var $kblength = false;
 179         var $missingComment = false;
 180         var $missingSummary = false;
 181         var $allowBlankSummary = false;
 182         var $autoSumm = '';
 183         var $hookError = '';
 184         #var $mPreviewTemplates;
 185
 186         /**
 187          * @var ParserOutput
 188          */
 189         var $mParserOutput;
 190
 191         /**
 192          * Has a summary been preset using GET parameter &summary= ?
 193          * @var Bool
 194          */
 195         var $hasPresetSummary = false;
 196
 197         var $mBaseRevision = false;
 198         var $mShowSummaryField = true;
 199
 200         # Form values
 201         var $save = false, $preview = false, $diff = false;
 202         var $minoredit = false, $watchthis = false, $recreate = false;
 203         var $textbox1 = '', $textbox2 = '', $summary = '', $nosummary = false;
 204         var $edittime = '', $section = '', $sectiontitle = '', $starttime = '';
 205         var $oldid = 0, $editintro = '', $scrolltop = null, $bot = true;
 206
 207         # Placeholders for text injection by hooks (must be HTML)
 208         # extensions should take care to _append_ to the present value
 209         public $editFormPageTop = ''; // Before even the preview
 210         public $editFormTextTop = '';
 211         public $editFormTextBeforeContent = '';
 212         public $editFormTextAfterWarn = '';
 213         public $editFormTextAfterTools = '';
 214         public $editFormTextBottom = '';
 215         public $editFormTextAfterContent = '';
 216         public $previewTextAfterContent = '';
 217         public $mPreloadText = '';
 218
 219         /* $didSave should be set to true whenever an article was succesfully altered. */
 220         public $didSave = false;
 221         public $undidRev = 0;
 222
 223         public $suppressIntro = false;
 224
 225         /**
 226          * @param $article Article
 227          */
 228         public function __construct( Article $article ) {
 229                 $this->mArticle = $article;
 230                 $this->mTitle = $article->getTitle();
 231         }
 232
 233         /**
 234          * @return Article
 235          */
 236         public function getArticle() {
 237                 return $this->mArticle;
 238         }
 239
 240         /**
 241          * @since 1.19
 242          * @return Title
 243          */
 244         public function getTitle() {
 245                 return $this->mTitle;
 246         }
 247
 248         /**
 249          * Set the context Title object
 250          *
 251          * @param $title Title object or null
 252          */
 253         public function setContextTitle( $title ) {
 254                 $this->mContextTitle = $title;
 255         }
 256
 257         /**
 258          * Get the context title object.
 259          * If not set, $wgTitle will be returned. This behavior might changed in
 260          * the future to return $this->mTitle instead.
 261          *
 262          * @return Title object
 263          */
 264         public function getContextTitle() {
 265                 if ( is_null( $this->mContextTitle ) ) {
 266                         global $wgTitle;
 267                         return $wgTitle;
 268                 } else {
 269                         return $this->mContextTitle;
 270                 }
 271         }
 272
 273         function submit() {
 274                 $this->edit();
 275         }
 276
 277         /**
 278          * This is the function that gets called for "action=edit". It
 279          * sets up various member variables, then passes execution to
 280          * another function, usually showEditForm()
 281          *
 282          * The edit form is self-submitting, so that when things like
 283          * preview and edit conflicts occur, we get the same form back
 284          * with the extra stuff added.  Only when the final submission
 285          * is made and all is well do we actually save and redirect to
 286          * the newly-edited page.
 287          */
 288         function edit() {
 289                 global $wgOut, $wgRequest, $wgUser;
 290                 // Allow extensions to modify/prevent this form or submission
 291                 if ( !wfRunHooks( 'AlternateEdit', array( $this ) ) ) {
 292                         return;
 293                 }
 294
 295                 wfProfileIn( __METHOD__ );
 296                 wfDebug( __METHOD__ . ": enter\n" );
 297
 298                 // If they used redlink=1 and the page exists, redirect to the main article
 299                 if ( $wgRequest->getBool( 'redlink' ) && $this->mTitle->exists() ) {
 300                         $wgOut->redirect( $this->mTitle->getFullURL() );
 301                         wfProfileOut( __METHOD__ );
 302                         return;
 303                 }
 304
 305                 $this->importFormData( $wgRequest );
 306                 $this->firsttime = false;
 307
 308                 if ( $this->live ) {
 309                         $this->livePreview();
 310                         wfProfileOut( __METHOD__ );
 311                         return;
 312                 }
 313
 314                 if ( wfReadOnly() && $this->save ) {
 315                         // Force preview
 316                         $this->save = false;
 317                         $this->preview = true;
 318                 }
 319
 320                 if ( $this->save ) {
 321                         $this->formtype = 'save';
 322                 } elseif ( $this->preview ) {
 323                         $this->formtype = 'preview';
 324                 } elseif ( $this->diff ) {
 325                         $this->formtype = 'diff';
 326                 } else { # First time through
 327                         $this->firsttime = true;
 328                         if ( $this->previewOnOpen() ) {
 329                                 $this->formtype = 'preview';
 330                         } else {
 331                                 $this->formtype = 'initial';
 332                         }
 333                 }
 334
 335                 $permErrors = $this->getEditPermissionErrors();
 336                 if ( $permErrors ) {
 337                         wfDebug( __METHOD__ . ": User can't edit\n" );
 338                         // Auto-block user's IP if the account was "hard" blocked
 339                         $wgUser->spreadAnyEditBlock();
 340
 341                         $this->displayPermissionsError( $permErrors );
 342
 343                         wfProfileOut( __METHOD__ );
 344                         return;
 345                 }
 346
 347                 wfProfileIn( __METHOD__ . "-business-end" );
 348
 349                 $this->isConflict = false;
 350                 // css / js subpages of user pages get a special treatment
 351                 $this->isCssJsSubpage       = $this->mTitle->isCssJsSubpage();
 352                 $this->isCssSubpage         = $this->mTitle->isCssSubpage();
 353                 $this->isJsSubpage          = $this->mTitle->isJsSubpage();
 354                 $this->isWrongCaseCssJsPage = $this->isWrongCaseCssJsPage();
 355                 $this->isNew                = !$this->mTitle->exists() || $this->section == 'new';
 356
 357                 # Show applicable editing introductions
 358                 if ( $this->formtype == 'initial' || $this->firsttime ) {
 359                         $this->showIntro();
 360                 }
 361
 362                 # Attempt submission here.  This will check for edit conflicts,
 363                 # and redundantly check for locked database, blocked IPs, etc.
 364                 # that edit() already checked just in case someone tries to sneak
 365                 # in the back door with a hand-edited submission URL.
 366
 367                 if ( 'save' == $this->formtype ) {
 368                         if ( !$this->attemptSave() ) {
 369                                 wfProfileOut( __METHOD__ . "-business-end" );
 370                                 wfProfileOut( __METHOD__ );
 371                                 return;
 372                         }
 373                 }
 374
 375                 # First time through: get contents, set time for conflict
 376                 # checking, etc.
 377                 if ( 'initial' == $this->formtype || $this->firsttime ) {
 378                         if ( $this->initialiseForm() === false ) {
 379                                 $this->noSuchSectionPage();
 380                                 wfProfileOut( __METHOD__ . "-business-end" );
 381                                 wfProfileOut( __METHOD__ );
 382                                 return;
 383                         }
 384                         if ( !$this->mTitle->getArticleID() )
 385                                 wfRunHooks( 'EditFormPreloadText', array( &$this->textbox1, &$this->mTitle ) );
 386                         else
 387                                 wfRunHooks( 'EditFormInitialText', array( $this ) );
 388                 }
 389
 390                 $this->showEditForm();
 391                 wfProfileOut( __METHOD__ . "-business-end" );
 392                 wfProfileOut( __METHOD__ );
 393         }
 394
 395         /**
 396          * @return array
 397          */
 398         protected function getEditPermissionErrors() {
 399                 global $wgUser;
 400                 $permErrors = $this->mTitle->getUserPermissionsErrors( 'edit', $wgUser );
 401                 # Can this title be created?
 402                 if ( !$this->mTitle->exists() ) {
 403                         $permErrors = array_merge( $permErrors,
 404                                 wfArrayDiff2( $this->mTitle->getUserPermissionsErrors( 'create', $wgUser ), $permErrors ) );
 405                 }
 406                 # Ignore some permissions errors when a user is just previewing/viewing diffs
 407                 $remove = array();
 408                 foreach ( $permErrors as $error ) {
 409                         if ( ( $this->preview || $this->diff ) &&
 410                                 ( $error[0] == 'blockedtext' || $error[0] == 'autoblockedtext' ) )
 411                         {
 412                                 $remove[] = $error;
 413                         }
 414                 }
 415                 $permErrors = wfArrayDiff2( $permErrors, $remove );
 416                 return $permErrors;
 417         }
 418
 419         /**
 420          * Display a permissions error page, like OutputPage::showPermissionsErrorPage(),
 421          * but with the following differences:
 422          * - If redlink=1, the user will be redirected to the page
 423          * - If there is content to display or the error occurs while either saving,
 424          *   previewing or showing the difference, it will be a
 425          *   "View source for ..." page displaying the source code after the error message.
 426          *
 427          * @since 1.19
 428          * @param $permErrors Array of permissions errors, as returned by
 429          *                    Title::getUserPermissionsErrors().
 430          */
 431         protected function displayPermissionsError( array $permErrors ) {
 432                 global $wgRequest, $wgOut;
 433
 434                 if ( $wgRequest->getBool( 'redlink' ) ) {
 435                         // The edit page was reached via a red link.
 436                         // Redirect to the article page and let them click the edit tab if
 437                         // they really want a permission error.
 438                         $wgOut->redirect( $this->mTitle->getFullUrl() );
 439                         return;
 440                 }
 441
 442                 $content = $this->getContent();
 443
 444                 # Use the normal message if there's nothing to display
 445                 if ( $this->firsttime && $content === '' ) {
 446                         $action = $this->mTitle->exists() ? 'edit' :
 447                                 ( $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage' );
 448                         throw new PermissionsError( $action, $permErrors );
 449                 }
 450
 451                 $wgOut->setPageTitle( wfMessage( 'viewsource-title', $this->getContextTitle()->getPrefixedText() ) );
 452                 $wgOut->addBacklinkSubtitle( $this->getContextTitle() );
 453                 $wgOut->addWikiText( $wgOut->formatPermissionsErrorMessage( $permErrors, 'edit' ) );
 454                 $wgOut->addHTML( "<hr />\n" );
 455
 456                 # If the user made changes, preserve them when showing the markup
 457                 # (This happens when a user is blocked during edit, for instance)
 458                 if ( !$this->firsttime ) {
 459                         $content = $this->textbox1;
 460                         $wgOut->addWikiMsg( 'viewyourtext' );
 461                 } else {
 462                         $wgOut->addWikiMsg( 'viewsourcetext' );
 463                 }
 464
 465                 $this->showTextbox( $content, 'wpTextbox1', array( 'readonly' ) );
 466
 467                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'templatesUsed' ),
 468                         Linker::formatTemplates( $this->getTemplates() ) ) );
 469
 470                 if ( $this->mTitle->exists() ) {
 471                         $wgOut->returnToMain( null, $this->mTitle );
 472                 }
 473         }
 474
 475         /**
 476          * Show a read-only error
 477          * Parameters are the same as OutputPage:readOnlyPage()
 478          * Redirect to the article page if redlink=1
 479          * @deprecated in 1.19; use displayPermissionsError() instead
 480          */
 481         function readOnlyPage( $source = null, $protected = false, $reasons = array(), $action = null ) {
 482                 wfDeprecated( __METHOD__, '1.19' );
 483
 484                 global $wgRequest, $wgOut;
 485                 if ( $wgRequest->getBool( 'redlink' ) ) {
 486                         // The edit page was reached via a red link.
 487                         // Redirect to the article page and let them click the edit tab if
 488                         // they really want a permission error.
 489                         $wgOut->redirect( $this->mTitle->getFullUrl() );
 490                 } else {
 491                         $wgOut->readOnlyPage( $source, $protected, $reasons, $action );
 492                 }
 493         }
 494
 495         /**
 496          * Should we show a preview when the edit form is first shown?
 497          *
 498          * @return bool
 499          */
 500         protected function previewOnOpen() {
 501                 global $wgRequest, $wgUser, $wgPreviewOnOpenNamespaces;
 502                 if ( $wgRequest->getVal( 'preview' ) == 'yes' ) {
 503                         // Explicit override from request
 504                         return true;
 505                 } elseif ( $wgRequest->getVal( 'preview' ) == 'no' ) {
 506                         // Explicit override from request
 507                         return false;
 508                 } elseif ( $this->section == 'new' ) {
 509                         // Nothing *to* preview for new sections
 510                         return false;
 511                 } elseif ( ( $wgRequest->getVal( 'preload' ) !== null || $this->mTitle->exists() ) && $wgUser->getOption( 'previewonfirst' ) ) {
 512                         // Standard preference behaviour
 513                         return true;
 514                 } elseif ( !$this->mTitle->exists() &&
 515                   isset( $wgPreviewOnOpenNamespaces[$this->mTitle->getNamespace()] ) &&
 516                   $wgPreviewOnOpenNamespaces[$this->mTitle->getNamespace()] )
 517                 {
 518                         // Categories are special
 519                         return true;
 520                 } else {
 521                         return false;
 522                 }
 523         }
 524
 525         /**
 526          * Checks whether the user entered a skin name in uppercase,
 527          * e.g. "User:Example/Monobook.css" instead of "monobook.css"
 528          *
 529          * @return bool
 530          */
 531         protected function isWrongCaseCssJsPage() {
 532                 if ( $this->mTitle->isCssJsSubpage() ) {
 533                         $name = $this->mTitle->getSkinFromCssJsSubpage();
 534                         $skins = array_merge(
 535                                 array_keys( Skin::getSkinNames() ),
 536                                 array( 'common' )
 537                         );
 538                         return !in_array( $name, $skins )
 539                                 && in_array( strtolower( $name ), $skins );
 540                 } else {
 541                         return false;
 542                 }
 543         }
 544
 545         /**
 546          * Does this EditPage class support section editing?
 547          * This is used by EditPage subclasses to indicate their ui cannot handle section edits
 548          *
 549          * @return bool
 550          */
 551         protected function isSectionEditSupported() {
 552                 return true;
 553         }
 554
 555         /**
 556          * This function collects the form data and uses it to populate various member variables.
 557          * @param $request WebRequest
 558          */
 559         function importFormData( &$request ) {
 560                 global $wgLang, $wgUser;
 561
 562                 wfProfileIn( __METHOD__ );
 563
 564                 # Section edit can come from either the form or a link
 565                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 566
 567                 if ( $request->wasPosted() ) {
 568                         # These fields need to be checked for encoding.
 569                         # Also remove trailing whitespace, but don't remove _initial_
 570                         # whitespace from the text boxes. This may be significant formatting.
 571                         $this->textbox1 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
 572                         if ( !$request->getCheck( 'wpTextbox2' ) ) {
 573                                 // Skip this if wpTextbox2 has input, it indicates that we came
 574                                 // from a conflict page with raw page text, not a custom form
 575                                 // modified by subclasses
 576                                 wfProfileIn( get_class( $this ) . "::importContentFormData" );
 577                                 $textbox1 = $this->importContentFormData( $request );
 578                                 if ( isset( $textbox1 ) )
 579                                         $this->textbox1 = $textbox1;
 580                                 wfProfileOut( get_class( $this ) . "::importContentFormData" );
 581                         }
 582
 583                         # Truncate for whole multibyte characters. +5 bytes for ellipsis
 584                         $this->summary = $wgLang->truncate( $request->getText( 'wpSummary' ), 250 );
 585
 586                         # If the summary consists of a heading, e.g. '==Foobar==', extract the title from the
 587                         # header syntax, e.g. 'Foobar'. This is mainly an issue when we are using wpSummary for
 588                         # section titles.
 589                         $this->summary = preg_replace( '/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->summary );
 590
 591                         # Treat sectiontitle the same way as summary.
 592                         # Note that wpSectionTitle is not yet a part of the actual edit form, as wpSummary is
 593                         # currently doing double duty as both edit summary and section title. Right now this
 594                         # is just to allow API edits to work around this limitation, but this should be
 595                         # incorporated into the actual edit form when EditPage is rewritten (Bugs 18654, 26312).
 596                         $this->sectiontitle = $wgLang->truncate( $request->getText( 'wpSectionTitle' ), 250 );
 597                         $this->sectiontitle = preg_replace( '/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->sectiontitle );
 598
 599                         $this->edittime = $request->getVal( 'wpEdittime' );
 600                         $this->starttime = $request->getVal( 'wpStarttime' );
 601
 602                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 603
 604                         if ( $this->textbox1 === '' && $request->getVal( 'wpTextbox1' ) === null ) {
 605                                 // wpTextbox1 field is missing, possibly due to being "too big"
 606                                 // according to some filter rules such as Suhosin's setting for
 607                                 // suhosin.request.max_value_length (d'oh)
 608                                 $this->incompleteForm = true;
 609                         } else {
 610                                 // edittime should be one of our last fields; if it's missing,
 611                                 // the submission probably broke somewhere in the middle.
 612                                 $this->incompleteForm = is_null( $this->edittime );
 613                         }
 614                         if ( $this->incompleteForm ) {
 615                                 # If the form is incomplete, force to preview.
 616                                 wfDebug( __METHOD__ . ": Form data appears to be incomplete\n" );
 617                                 wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
 618                                 $this->preview = true;
 619                         } else {
 620                                 /* Fallback for live preview */
 621                                 $this->preview = $request->getCheck( 'wpPreview' ) || $request->getCheck( 'wpLivePreview' );
 622                                 $this->diff = $request->getCheck( 'wpDiff' );
 623
 624                                 // Remember whether a save was requested, so we can indicate
 625                                 // if we forced preview due to session failure.
 626                                 $this->mTriedSave = !$this->preview;
 627
 628                                 if ( $this->tokenOk( $request ) ) {
 629                                         # Some browsers will not report any submit button
 630                                         # if the user hits enter in the comment box.
 631                                         # The unmarked state will be assumed to be a save,
 632                                         # if the form seems otherwise complete.
 633                                         wfDebug( __METHOD__ . ": Passed token check.\n" );
 634                                 } elseif ( $this->diff ) {
 635                                         # Failed token check, but only requested "Show Changes".
 636                                         wfDebug( __METHOD__ . ": Failed token check; Show Changes requested.\n" );
 637                                 } else {
 638                                         # Page might be a hack attempt posted from
 639                                         # an external site. Preview instead of saving.
 640                                         wfDebug( __METHOD__ . ": Failed token check; forcing preview\n" );
 641                                         $this->preview = true;
 642                                 }
 643                         }
 644                         $this->save = !$this->preview && !$this->diff;
 645                         if ( !preg_match( '/^\d{14}$/', $this->edittime ) ) {
 646                                 $this->edittime = null;
 647                         }
 648
 649                         if ( !preg_match( '/^\d{14}$/', $this->starttime ) ) {
 650                                 $this->starttime = null;
 651                         }
 652
 653                         $this->recreate  = $request->getCheck( 'wpRecreate' );
 654
 655                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 656                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 657
 658                         # Don't force edit summaries when a user is editing their own user or talk page
 659                         if ( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK ) &&
 660                                 $this->mTitle->getText() == $wgUser->getName() )
 661                         {
 662                                 $this->allowBlankSummary = true;
 663                         } else {
 664                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' ) || !$wgUser->getOption( 'forceeditsummary' );
 665                         }
 666
 667                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
 668                 } else {
 669                         # Not a posted form? Start with nothing.
 670                         wfDebug( __METHOD__ . ": Not a posted form.\n" );
 671                         $this->textbox1     = '';
 672                         $this->summary      = '';
 673                         $this->sectiontitle = '';
 674                         $this->edittime     = '';
 675                         $this->starttime    = wfTimestampNow();
 676                         $this->edit         = false;
 677                         $this->preview      = false;
 678                         $this->save         = false;
 679                         $this->diff         = false;
 680                         $this->minoredit    = false;
 681                         $this->watchthis    = $request->getBool( 'watchthis', false ); // Watch may be overriden by request parameters
 682                         $this->recreate     = false;
 683
 684                         // When creating a new section, we can preload a section title by passing it as the
 685                         // preloadtitle parameter in the URL (Bug 13100)
 686                         if ( $this->section == 'new' && $request->getVal( 'preloadtitle' ) ) {
 687                                 $this->sectiontitle = $request->getVal( 'preloadtitle' );
 688                                 // Once wpSummary isn't being use for setting section titles, we should delete this.
 689                                 $this->summary = $request->getVal( 'preloadtitle' );
 690                         }
 691                         elseif ( $this->section != 'new' && $request->getVal( 'summary' ) ) {
 692                                 $this->summary = $request->getText( 'summary' );
 693                                 if ( $this->summary !== '' ) {
 694                                         $this->hasPresetSummary = true;
 695                                 }
 696                         }
 697
 698                         if ( $request->getVal( 'minor' ) ) {
 699                                 $this->minoredit = true;
 700                         }
 701                 }
 702
 703                 $this->bot = $request->getBool( 'bot', true );
 704                 $this->nosummary = $request->getBool( 'nosummary' );
 705
 706                 $this->oldid = $request->getInt( 'oldid' );
 707
 708                 $this->live = $request->getCheck( 'live' );
 709                 $this->editintro = $request->getText( 'editintro',
 710                         // Custom edit intro for new sections
 711                         $this->section === 'new' ? 'MediaWiki:addsection-editintro' : '' );
 712
 713                 // Allow extensions to modify form data
 714                 wfRunHooks( 'EditPage::importFormData', array( $this, $request ) );
 715
 716                 wfProfileOut( __METHOD__ );
 717         }
 718
 719         /**
 720          * Subpage overridable method for extracting the page content data from the
 721          * posted form to be placed in $this->textbox1, if using customized input
 722          * this method should be overrided and return the page text that will be used
 723          * for saving, preview parsing and so on...
 724          *
 725          * @param $request WebRequest
 726          */
 727         protected function importContentFormData( &$request ) {
 728                 return; // Don't do anything, EditPage already extracted wpTextbox1
 729         }
 730
 731         /**
 732          * Initialise form fields in the object
 733          * Called on the first invocation, e.g. when a user clicks an edit link
 734          * @return bool -- if the requested section is valid
 735          */
 736         function initialiseForm() {
 737                 global $wgUser;
 738                 $this->edittime = $this->mArticle->getTimestamp();
 739                 $this->textbox1 = $this->getContent( false );
 740                 // activate checkboxes if user wants them to be always active
 741                 # Sort out the "watch" checkbox
 742                 if ( $wgUser->getOption( 'watchdefault' ) ) {
 743                         # Watch all edits
 744                         $this->watchthis = true;
 745                 } elseif ( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
 746                         # Watch creations
 747                         $this->watchthis = true;
 748                 } elseif ( $this->mTitle->userIsWatching() ) {
 749                         # Already watched
 750                         $this->watchthis = true;
 751                 }
 752                 if ( $wgUser->getOption( 'minordefault' ) && !$this->isNew ) {
 753                         $this->minoredit = true;
 754                 }
 755                 if ( $this->textbox1 === false ) {
 756                         return false;
 757                 }
 758                 wfProxyCheck();
 759                 return true;
 760         }
 761
 762         /**
 763          * Fetch initial editing page content.
 764          *
 765          * @param $def_text string
 766          * @return mixed string on success, $def_text for invalid sections
 767          * @private
 768          */
 769         function getContent( $def_text = '' ) {
 770                 global $wgOut, $wgRequest, $wgParser;
 771
 772                 wfProfileIn( __METHOD__ );
 773
 774                 $text = false;
 775
 776                 // For message page not locally set, use the i18n message.
 777                 // For other non-existent articles, use preload text if any.
 778                 if ( !$this->mTitle->exists() || $this->section == 'new' ) {
 779                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI && $this->section != 'new' ) {
 780                                 # If this is a system message, get the default text.
 781                                 $text = $this->mTitle->getDefaultMessageText();
 782                         }
 783                         if ( $text === false ) {
 784                                 # If requested, preload some text.
 785                                 $preload = $wgRequest->getVal( 'preload',
 786                                         // Custom preload text for new sections
 787                                         $this->section === 'new' ? 'MediaWiki:addsection-preload' : '' );
 788                                 $text = $this->getPreloadedText( $preload );
 789                         }
 790                 // For existing pages, get text based on "undo" or section parameters.
 791                 } else {
 792                         if ( $this->section != '' ) {
 793                                 // Get section edit text (returns $def_text for invalid sections)
 794                                 $text = $wgParser->getSection( $this->getOriginalContent(), $this->section, $def_text );
 795                         } else {
 796                                 $undoafter = $wgRequest->getInt( 'undoafter' );
 797                                 $undo = $wgRequest->getInt( 'undo' );
 798
 799                                 if ( $undo > 0 && $undoafter > 0 ) {
 800                                         if ( $undo < $undoafter ) {
 801                                                 # If they got undoafter and undo round the wrong way, switch them
 802                                                 list( $undo, $undoafter ) = array( $undoafter, $undo );
 803                                         }
 804
 805                                         $undorev = Revision::newFromId( $undo );
 806                                         $oldrev = Revision::newFromId( $undoafter );
 807
 808                                         # Sanity check, make sure it's the right page,
 809                                         # the revisions exist and they were not deleted.
 810                                         # Otherwise, $text will be left as-is.
 811                                         if ( !is_null( $undorev ) && !is_null( $oldrev ) &&
 812                                                 $undorev->getPage() == $oldrev->getPage() &&
 813                                                 $undorev->getPage() == $this->mTitle->getArticleID() &&
 814                                                 !$undorev->isDeleted( Revision::DELETED_TEXT ) &&
 815                                                 !$oldrev->isDeleted( Revision::DELETED_TEXT ) ) {
 816
 817                                                 $text = $this->mArticle->getUndoText( $undorev, $oldrev );
 818                                                 if ( $text === false ) {
 819                                                         # Warn the user that something went wrong
 820                                                         $undoMsg = 'failure';
 821                                                 } else {
 822                                                         # Inform the user of our success and set an automatic edit summary
 823                                                         $undoMsg = 'success';
 824
 825                                                         # If we just undid one rev, use an autosummary
 826                                                         $firstrev = $oldrev->getNext();
 827                                                         if ( $firstrev->getId() == $undo ) {
 828                                                                 $undoSummary = wfMsgForContent( 'undo-summary', $undo, $undorev->getUserText() );
 829                                                                 if ( $this->summary === '' ) {
 830                                                                         $this->summary = $undoSummary;
 831                                                                 } else {
 832                                                                         $this->summary = $undoSummary . wfMsgForContent( 'colon-separator' ) . $this->summary;
 833                                                                 }
 834                                                                 $this->undidRev = $undo;
 835                                                         }
 836                                                         $this->formtype = 'diff';
 837                                                 }
 838                                         } else {
 839                                                 // Failed basic sanity checks.
 840                                                 // Older revisions may have been removed since the link
 841                                                 // was created, or we may simply have got bogus input.
 842                                                 $undoMsg = 'norev';
 843                                         }
 844
 845                                         $class = ( $undoMsg == 'success' ? '' : 'error ' ) . "mw-undo-{$undoMsg}";
 846                                         $this->editFormPageTop .= $wgOut->parse( "<div class=\"{$class}\">" .
 847                                                 wfMsgNoTrans( 'undo-' . $undoMsg ) . '</div>', true, /* interface */true );
 848                                 }
 849
 850                                 if ( $text === false ) {
 851                                         $text = $this->getOriginalContent();
 852                                 }
 853                         }
 854                 }
 855
 856                 wfProfileOut( __METHOD__ );
 857                 return $text;
 858         }
 859
 860         /**
 861          * Get the content of the wanted revision, without section extraction.
 862          *
 863          * The result of this function can be used to compare user's input with
 864          * section replaced in its context (using WikiPage::replaceSection())
 865          * to the original text of the edit.
 866          *
 867          * This difers from Article::getContent() that when a missing revision is
 868          * encountered the result will be an empty string and not the
 869          * 'missing-article' message.
 870          *
 871          * @since 1.19
 872          * @return string
 873          */
 874         private function getOriginalContent() {
 875                 if ( $this->section == 'new' ) {
 876                         return $this->getCurrentText();
 877                 }
 878                 $revision = $this->mArticle->getRevisionFetched();
 879                 if ( $revision === null ) {
 880                         return '';
 881                 }
 882                 return $this->mArticle->getContent();
 883         }
 884
 885         /**
 886          * Get the actual text of the page. This is basically similar to
 887          * WikiPage::getRawText() except that when the page doesn't exist an empty
 888          * string is returned instead of false.
 889          *
 890          * @since 1.19
 891          * @return string
 892          */
 893         private function getCurrentText() {
 894                 $text = $this->mArticle->getRawText();
 895                 if ( $text === false ) {
 896                         return '';
 897                 } else {
 898                         return $text;
 899                 }
 900         }
 901
 902         /**
 903          * Use this method before edit() to preload some text into the edit box
 904          *
 905          * @param $text string
 906          */
 907         public function setPreloadedText( $text ) {
 908                 $this->mPreloadText = $text;
 909         }
 910
 911         /**
 912          * Get the contents to be preloaded into the box, either set by
 913          * an earlier setPreloadText() or by loading the given page.
 914          *
 915          * @param $preload String: representing the title to preload from.
 916          * @return String
 917          */
 918         protected function getPreloadedText( $preload ) {
 919                 global $wgUser, $wgParser;
 920
 921                 if ( !empty( $this->mPreloadText ) ) {
 922                         return $this->mPreloadText;
 923                 }
 924
 925                 if ( $preload === '' ) {
 926                         return '';
 927                 }
 928
 929                 $title = Title::newFromText( $preload );
 930                 # Check for existence to avoid getting MediaWiki:Noarticletext
 931                 if ( $title === null || !$title->exists() || !$title->userCan( 'read' ) ) {
 932                         return '';
 933                 }
 934
 935                 $page = WikiPage::factory( $title );
 936                 if ( $page->isRedirect() ) {
 937                         $title = $page->getRedirectTarget();
 938                         # Same as before
 939                         if ( $title === null || !$title->exists() || !$title->userCan( 'read' ) ) {
 940                                 return '';
 941                         }
 942                         $page = WikiPage::factory( $title );
 943                 }
 944
 945                 $parserOptions = ParserOptions::newFromUser( $wgUser );
 946                 return $wgParser->getPreloadText( $page->getRawText(), $title, $parserOptions );
 947         }
 948
 949         /**
 950          * Make sure the form isn't faking a user's credentials.
 951          *
 952          * @param $request WebRequest
 953          * @return bool
 954          * @private
 955          */
 956         function tokenOk( &$request ) {
 957                 global $wgUser;
 958                 $token = $request->getVal( 'wpEditToken' );
 959                 $this->mTokenOk = $wgUser->matchEditToken( $token );
 960                 $this->mTokenOkExceptSuffix = $wgUser->matchEditTokenNoSuffix( $token );
 961                 return $this->mTokenOk;
 962         }
 963
 964         /**
 965          * Attempt submission
 966          * @return bool false if output is done, true if the rest of the form should be displayed
 967          */
 968         function attemptSave() {
 969                 global $wgUser, $wgOut;
 970
 971                 $resultDetails = false;
 972                 # Allow bots to exempt some edits from bot flagging
 973                 $bot = $wgUser->isAllowed( 'bot' ) && $this->bot;
 974                 $status = $this->internalAttemptSave( $resultDetails, $bot );
 975                 // FIXME: once the interface for internalAttemptSave() is made nicer, this should use the message in $status
 976
 977                 if ( $status->value == self::AS_SUCCESS_UPDATE || $status->value == self::AS_SUCCESS_NEW_ARTICLE ) {
 978                         $this->didSave = true;
 979                 }
 980
 981                 switch ( $status->value ) {
 982                         case self::AS_HOOK_ERROR_EXPECTED:
 983                         case self::AS_CONTENT_TOO_BIG:
 984                         case self::AS_ARTICLE_WAS_DELETED:
 985                         case self::AS_CONFLICT_DETECTED:
 986                         case self::AS_SUMMARY_NEEDED:
 987                         case self::AS_TEXTBOX_EMPTY:
 988                         case self::AS_MAX_ARTICLE_SIZE_EXCEEDED:
 989                         case self::AS_END:
 990                                 return true;
 991
 992                         case self::AS_HOOK_ERROR:
 993                         case self::AS_FILTERING:
 994                                 return false;
 995
 996                         case self::AS_SUCCESS_NEW_ARTICLE:
 997                                 $query = $resultDetails['redirect'] ? 'redirect=no' : '';
 998                                 $anchor = isset ( $resultDetails['sectionanchor'] ) ? $resultDetails['sectionanchor'] : '';
 999                                 $wgOut->redirect( $this->mTitle->getFullURL( $query ) . $anchor );
1000                                 return false;
1001
1002                         case self::AS_SUCCESS_UPDATE:
1003                                 $extraQuery = '';
1004                                 $sectionanchor = $resultDetails['sectionanchor'];
1005
1006                                 // Give extensions a chance to modify URL query on update
1007                                 wfRunHooks( 'ArticleUpdateBeforeRedirect', array( $this->mArticle, &$sectionanchor, &$extraQuery ) );
1008
1009                                 if ( $resultDetails['redirect'] ) {
1010                                         if ( $extraQuery == '' ) {
1011                                                 $extraQuery = 'redirect=no';
1012                                         } else {
1013                                                 $extraQuery = 'redirect=no&' . $extraQuery;
1014                                         }
1015                                 }
1016                                 $wgOut->redirect( $this->mTitle->getFullURL( $extraQuery ) . $sectionanchor );
1017                                 return false;
1018
1019                         case self::AS_BLANK_ARTICLE:
1020                                 $wgOut->redirect( $this->getContextTitle()->getFullURL() );
1021                                 return false;
1022
1023                         case self::AS_SPAM_ERROR:
1024                                 $this->spamPageWithContent( $resultDetails['spam'] );
1025                                 return false;
1026
1027                         case self::AS_BLOCKED_PAGE_FOR_USER:
1028                                 throw new UserBlockedError( $wgUser->getBlock() );
1029
1030                         case self::AS_IMAGE_REDIRECT_ANON:
1031                         case self::AS_IMAGE_REDIRECT_LOGGED:
1032                                 throw new PermissionsError( 'upload' );
1033
1034                         case self::AS_READ_ONLY_PAGE_ANON:
1035                         case self::AS_READ_ONLY_PAGE_LOGGED:
1036                                 throw new PermissionsError( 'edit' );
1037
1038                         case self::AS_READ_ONLY_PAGE:
1039                                 throw new ReadOnlyError;
1040
1041                         case self::AS_RATE_LIMITED:
1042                                 throw new ThrottledError();
1043
1044                         case self::AS_NO_CREATE_PERMISSION:
1045                                 $permission = $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage';
1046                                 throw new PermissionsError( $permission );
1047
1048                 }
1049                 return false;
1050         }
1051
1052         /**
1053          * Attempt submission (no UI)
1054          *
1055          * @param $result
1056          * @param $bot bool
1057          *
1058          * @return Status object, possibly with a message, but always with one of the AS_* constants in $status->value,
1059          *
1060          * FIXME: This interface is TERRIBLE, but hard to get rid of due to various error display idiosyncrasies. There are
1061          * also lots of cases where error metadata is set in the object and retrieved later instead of being returned, e.g.
1062          * AS_CONTENT_TOO_BIG and AS_BLOCKED_PAGE_FOR_USER. All that stuff needs to be cleaned up some time.
1063          */
1064         function internalAttemptSave( &$result, $bot = false ) {
1065                 global $wgFilterCallback, $wgUser, $wgRequest, $wgParser;
1066                 global $wgMaxArticleSize;
1067
1068                 $status = Status::newGood();
1069
1070                 wfProfileIn( __METHOD__  );
1071                 wfProfileIn( __METHOD__ . '-checks' );
1072
1073                 if ( !wfRunHooks( 'EditPage::attemptSave', array( $this ) ) ) {
1074                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving\n" );
1075                         $status->fatal( 'hookaborted' );
1076                         $status->value = self::AS_HOOK_ERROR;
1077                         wfProfileOut( __METHOD__ . '-checks' );
1078                         wfProfileOut( __METHOD__  );
1079                         return $status;
1080                 }
1081
1082                 # Check image redirect
1083                 if ( $this->mTitle->getNamespace() == NS_FILE &&
1084                         Title::newFromRedirect( $this->textbox1 ) instanceof Title &&
1085                         !$wgUser->isAllowed( 'upload' ) ) {
1086                                 $code = $wgUser->isAnon() ? self::AS_IMAGE_REDIRECT_ANON : self::AS_IMAGE_REDIRECT_LOGGED;
1087                                 $status->setResult( false, $code );
1088
1089                                 wfProfileOut( __METHOD__ . '-checks' );
1090                                 wfProfileOut( __METHOD__  );
1091
1092                                 return $status;
1093                 }
1094
1095                 # Check for spam
1096                 $match = self::matchSummarySpamRegex( $this->summary );
1097                 if ( $match === false ) {
1098                         $match = self::matchSpamRegex( $this->textbox1 );
1099                 }
1100                 if ( $match !== false ) {
1101                         $result['spam'] = $match;
1102                         $ip = $wgRequest->getIP();
1103                         $pdbk = $this->mTitle->getPrefixedDBkey();
1104                         $match = str_replace( "\n", '', $match );
1105                         wfDebugLog( 'SpamRegex', "$ip spam regex hit [[$pdbk]]: \"$match\"" );
1106                         $status->fatal( 'spamprotectionmatch', $match );
1107                         $status->value = self::AS_SPAM_ERROR;
1108                         wfProfileOut( __METHOD__ . '-checks' );
1109                         wfProfileOut( __METHOD__ );
1110                         return $status;
1111                 }
1112                 if ( $wgFilterCallback && is_callable( $wgFilterCallback ) && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section, $this->hookError, $this->summary ) ) {
1113                         # Error messages or other handling should be performed by the filter function
1114                         $status->setResult( false, self::AS_FILTERING );
1115                         wfProfileOut( __METHOD__ . '-checks' );
1116                         wfProfileOut( __METHOD__ );
1117                         return $status;
1118                 }
1119                 if ( !wfRunHooks( 'EditFilter', array( $this, $this->textbox1, $this->section, &$this->hookError, $this->summary ) ) ) {
1120                         # Error messages etc. could be handled within the hook...
1121                         $status->fatal( 'hookaborted' );
1122                         $status->value = self::AS_HOOK_ERROR;
1123                         wfProfileOut( __METHOD__ . '-checks' );
1124                         wfProfileOut( __METHOD__ );
1125                         return $status;
1126                 } elseif ( $this->hookError != '' ) {
1127                         # ...or the hook could be expecting us to produce an error
1128                         $status->fatal( 'hookaborted' );
1129                         $status->value = self::AS_HOOK_ERROR_EXPECTED;
1130                         wfProfileOut( __METHOD__ . '-checks' );
1131                         wfProfileOut( __METHOD__ );
1132                         return $status;
1133                 }
1134
1135                 if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
1136                         // Auto-block user's IP if the account was "hard" blocked
1137                         $wgUser->spreadAnyEditBlock();
1138                         # Check block state against master, thus 'false'.
1139                         $status->setResult( false, self::AS_BLOCKED_PAGE_FOR_USER );
1140                         wfProfileOut( __METHOD__ . '-checks' );
1141                         wfProfileOut( __METHOD__ );
1142                         return $status;
1143                 }
1144
1145                 $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
1146                 if ( $this->kblength > $wgMaxArticleSize ) {
1147                         // Error will be displayed by showEditForm()
1148                         $this->tooBig = true;
1149                         $status->setResult( false, self::AS_CONTENT_TOO_BIG );
1150                         wfProfileOut( __METHOD__ . '-checks' );
1151                         wfProfileOut( __METHOD__ );
1152                         return $status;
1153                 }
1154
1155                 if ( !$wgUser->isAllowed( 'edit' ) ) {
1156                         if ( $wgUser->isAnon() ) {
1157                                 $status->setResult( false, self::AS_READ_ONLY_PAGE_ANON );
1158                                 wfProfileOut( __METHOD__ . '-checks' );
1159                                 wfProfileOut( __METHOD__ );
1160                                 return $status;
1161                         } else {
1162                                 $status->fatal( 'readonlytext' );
1163                                 $status->value = self::AS_READ_ONLY_PAGE_LOGGED;
1164                                 wfProfileOut( __METHOD__ . '-checks' );
1165                                 wfProfileOut( __METHOD__ );
1166                                 return $status;
1167                         }
1168                 }
1169
1170                 if ( wfReadOnly() ) {
1171                         $status->fatal( 'readonlytext' );
1172                         $status->value = self::AS_READ_ONLY_PAGE;
1173                         wfProfileOut( __METHOD__ . '-checks' );
1174                         wfProfileOut( __METHOD__ );
1175                         return $status;
1176                 }
1177                 if ( $wgUser->pingLimiter() ) {
1178                         $status->fatal( 'actionthrottledtext' );
1179                         $status->value = self::AS_RATE_LIMITED;
1180                         wfProfileOut( __METHOD__ . '-checks' );
1181                         wfProfileOut( __METHOD__ );
1182                         return $status;
1183                 }
1184
1185                 # If the article has been deleted while editing, don't save it without
1186                 # confirmation
1187                 if ( $this->wasDeletedSinceLastEdit() && !$this->recreate ) {
1188                         $status->setResult( false, self::AS_ARTICLE_WAS_DELETED );
1189                         wfProfileOut( __METHOD__ . '-checks' );
1190                         wfProfileOut( __METHOD__ );
1191                         return $status;
1192                 }
1193
1194                 wfProfileOut( __METHOD__ . '-checks' );
1195
1196                 # If article is new, insert it.
1197                 $aid = $this->mTitle->getArticleID( Title::GAID_FOR_UPDATE );
1198                 $new = ( $aid == 0 );
1199
1200                 if ( $new ) {
1201                         // Late check for create permission, just in case *PARANOIA*
1202                         if ( !$this->mTitle->userCan( 'create' ) ) {
1203                                 $status->fatal( 'nocreatetext' );
1204                                 $status->value = self::AS_NO_CREATE_PERMISSION;
1205                                 wfDebug( __METHOD__ . ": no create permission\n" );
1206                                 wfProfileOut( __METHOD__ );
1207                                 return $status;
1208                         }
1209
1210                         # Don't save a new article if it's blank.
1211                         if ( $this->textbox1 == '' ) {
1212                                 $status->setResult( false, self::AS_BLANK_ARTICLE );
1213                                 wfProfileOut( __METHOD__ );
1214                                 return $status;
1215                         }
1216
1217                         // Run post-section-merge edit filter
1218                         if ( !wfRunHooks( 'EditFilterMerged', array( $this, $this->textbox1, &$this->hookError, $this->summary ) ) ) {
1219                                 # Error messages etc. could be handled within the hook...
1220                                 $status->fatal( 'hookaborted' );
1221                                 $status->value = self::AS_HOOK_ERROR;
1222                                 wfProfileOut( __METHOD__ );
1223                                 return $status;
1224                         } elseif ( $this->hookError != '' ) {
1225                                 # ...or the hook could be expecting us to produce an error
1226                                 $status->fatal( 'hookaborted' );
1227                                 $status->value = self::AS_HOOK_ERROR_EXPECTED;
1228                                 wfProfileOut( __METHOD__ );
1229                                 return $status;
1230                         }
1231
1232                         $text = $this->textbox1;
1233                         $result['sectionanchor'] = '';
1234                         if ( $this->section == 'new' ) {
1235                                 if ( $this->sectiontitle !== '' ) {
1236                                         // Insert the section title above the content.
1237                                         $text = wfMsgForContent( 'newsectionheaderdefaultlevel', $this->sectiontitle ) . "\n\n" . $text;
1238
1239                                         // Jump to the new section
1240                                         $result['sectionanchor'] = $wgParser->guessLegacySectionNameFromWikiText( $this->sectiontitle );
1241
1242                                         // If no edit summary was specified, create one automatically from the section
1243                                         // title and have it link to the new section. Otherwise, respect the summary as
1244                                         // passed.
1245                                         if ( $this->summary === '' ) {
1246                                                 $cleanSectionTitle = $wgParser->stripSectionName( $this->sectiontitle );
1247                                                 $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSectionTitle );
1248                                         }
1249                                 } elseif ( $this->summary !== '' ) {
1250                                         // Insert the section title above the content.
1251                                         $text = wfMsgForContent( 'newsectionheaderdefaultlevel', $this->summary ) . "\n\n" . $text;
1252
1253                                         // Jump to the new section
1254                                         $result['sectionanchor'] = $wgParser->guessLegacySectionNameFromWikiText( $this->summary );
1255
1256                                         // Create a link to the new section from the edit summary.
1257                                         $cleanSummary = $wgParser->stripSectionName( $this->summary );
1258                                         $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
1259                                 }
1260                         }
1261
1262                         $status->value = self::AS_SUCCESS_NEW_ARTICLE;
1263
1264                 } else {
1265
1266                         # Article exists. Check for edit conflict.
1267
1268                         $this->mArticle->clear(); # Force reload of dates, etc.
1269                         $timestamp = $this->mArticle->getTimestamp();
1270
1271                         wfDebug( "timestamp: {$timestamp}, edittime: {$this->edittime}\n" );
1272
1273                         if ( $timestamp != $this->edittime ) {
1274                                 $this->isConflict = true;
1275                                 if ( $this->section == 'new' ) {
1276                                         if ( $this->mArticle->getUserText() == $wgUser->getName() &&
1277                                                 $this->mArticle->getComment() == $this->summary ) {
1278                                                 // Probably a duplicate submission of a new comment.
1279                                                 // This can happen when squid resends a request after
1280                                                 // a timeout but the first one actually went through.
1281                                                 wfDebug( __METHOD__ . ": duplicate new section submission; trigger edit conflict!\n" );
1282                                         } else {
1283                                                 // New comment; suppress conflict.
1284                                                 $this->isConflict = false;
1285                                                 wfDebug( __METHOD__ . ": conflict suppressed; new section\n" );
1286                                         }
1287                                 } elseif ( $this->section == '' && $this->userWasLastToEdit( $wgUser->getId(), $this->edittime ) ) {
1288                                         # Suppress edit conflict with self, except for section edits where merging is required.
1289                                         wfDebug( __METHOD__ . ": Suppressing edit conflict, same user.\n" );
1290                                         $this->isConflict = false;
1291                                 }
1292                         }
1293
1294                         // If sectiontitle is set, use it, otherwise use the summary as the section title (for
1295                         // backwards compatibility with old forms/bots).
1296                         if ( $this->sectiontitle !== '' ) {
1297                                 $sectionTitle = $this->sectiontitle;
1298                         } else {
1299                                 $sectionTitle = $this->summary;
1300                         }
1301
1302                         if ( $this->isConflict ) {
1303                                 wfDebug( __METHOD__ . ": conflict! getting section '$this->section' for time '$this->edittime' (article time '{$timestamp}')\n" );
1304                                 $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $sectionTitle, $this->edittime );
1305                         } else {
1306                                 wfDebug( __METHOD__ . ": getting section '$this->section'\n" );
1307                                 $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $sectionTitle );
1308                         }
1309                         if ( is_null( $text ) ) {
1310                                 wfDebug( __METHOD__ . ": activating conflict; section replace failed.\n" );
1311                                 $this->isConflict = true;
1312                                 $text = $this->textbox1; // do not try to merge here!
1313                         } elseif ( $this->isConflict ) {
1314                                 # Attempt merge
1315                                 if ( $this->mergeChangesInto( $text ) ) {
1316                                         // Successful merge! Maybe we should tell the user the good news?
1317                                         $this->isConflict = false;
1318                                         wfDebug( __METHOD__ . ": Suppressing edit conflict, successful merge.\n" );
1319                                 } else {
1320                                         $this->section = '';
1321                                         $this->textbox1 = $text;
1322                                         wfDebug( __METHOD__ . ": Keeping edit conflict, failed merge.\n" );
1323                                 }
1324                         }
1325
1326                         if ( $this->isConflict ) {
1327                                 $status->setResult( false, self::AS_CONFLICT_DETECTED );
1328                                 wfProfileOut( __METHOD__ );
1329                                 return $status;
1330                         }
1331
1332                         // Run post-section-merge edit filter
1333                         if ( !wfRunHooks( 'EditFilterMerged', array( $this, $text, &$this->hookError, $this->summary ) ) ) {
1334                                 # Error messages etc. could be handled within the hook...
1335                                 $status->fatal( 'hookaborted' );
1336                                 $status->value = self::AS_HOOK_ERROR;
1337                                 wfProfileOut( __METHOD__ );
1338                                 return $status;
1339                         } elseif ( $this->hookError != '' ) {
1340                                 # ...or the hook could be expecting us to produce an error
1341                                 $status->fatal( 'hookaborted' );
1342                                 $status->value = self::AS_HOOK_ERROR_EXPECTED;
1343                                 wfProfileOut( __METHOD__ );
1344                                 return $status;
1345                         }
1346
1347                         # Handle the user preference to force summaries here, but not for null edits
1348                         if ( $this->section != 'new' && !$this->allowBlankSummary
1349                                 && $this->getOriginalContent() != $text
1350                                 && !Title::newFromRedirect( $text ) ) # check if it's not a redirect
1351                         {
1352                                 if ( md5( $this->summary ) == $this->autoSumm ) {
1353                                         $this->missingSummary = true;
1354                                         $status->fatal( 'missingsummary' );
1355                                         $status->value = self::AS_SUMMARY_NEEDED;
1356                                         wfProfileOut( __METHOD__ );
1357                                         return $status;
1358                                 }
1359                         }
1360
1361                         # And a similar thing for new sections
1362                         if ( $this->section == 'new' && !$this->allowBlankSummary ) {
1363                                 if ( trim( $this->summary ) == '' ) {
1364                                         $this->missingSummary = true;
1365                                         $status->fatal( 'missingsummary' ); // or 'missingcommentheader' if $section == 'new'. Blegh
1366                                         $status->value = self::AS_SUMMARY_NEEDED;
1367                                         wfProfileOut( __METHOD__ );
1368                                         return $status;
1369                                 }
1370                         }
1371
1372                         # All's well
1373                         wfProfileIn( __METHOD__ . '-sectionanchor' );
1374                         $sectionanchor = '';
1375                         if ( $this->section == 'new' ) {
1376                                 if ( $this->textbox1 == '' ) {
1377                                         $this->missingComment = true;
1378                                         $status->fatal( 'missingcommenttext' );
1379                                         $status->value = self::AS_TEXTBOX_EMPTY;
1380                                         wfProfileOut( __METHOD__ . '-sectionanchor' );
1381                                         wfProfileOut( __METHOD__ );
1382                                         return $status;
1383                                 }
1384                                 if ( $this->sectiontitle !== '' ) {
1385                                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $this->sectiontitle );
1386                                         // If no edit summary was specified, create one automatically from the section
1387                                         // title and have it link to the new section. Otherwise, respect the summary as
1388                                         // passed.
1389                                         if ( $this->summary === '' ) {
1390                                                 $cleanSectionTitle = $wgParser->stripSectionName( $this->sectiontitle );
1391                                                 $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSectionTitle );
1392                                         }
1393                                 } elseif ( $this->summary !== '' ) {
1394                                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $this->summary );
1395                                         # This is a new section, so create a link to the new section
1396                                         # in the revision summary.
1397                                         $cleanSummary = $wgParser->stripSectionName( $this->summary );
1398                                         $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
1399                                 }
1400                         } elseif ( $this->section != '' ) {
1401                                 # Try to get a section anchor from the section source, redirect to edited section if header found
1402                                 # XXX: might be better to integrate this into Article::replaceSection
1403                                 # for duplicate heading checking and maybe parsing
1404                                 $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
1405                                 # we can't deal with anchors, includes, html etc in the header for now,
1406                                 # headline would need to be parsed to improve this
1407                                 if ( $hasmatch && strlen( $matches[2] ) > 0 ) {
1408                                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $matches[2] );
1409                                 }
1410                         }
1411                         $result['sectionanchor'] = $sectionanchor;
1412                         wfProfileOut( __METHOD__ . '-sectionanchor' );
1413
1414                         // Save errors may fall down to the edit form, but we've now
1415                         // merged the section into full text. Clear the section field
1416                         // so that later submission of conflict forms won't try to
1417                         // replace that into a duplicated mess.
1418                         $this->textbox1 = $text;
1419                         $this->section = '';
1420
1421                         $status->value = self::AS_SUCCESS_UPDATE;
1422                 }
1423
1424                 // Check for length errors again now that the section is merged in
1425                 $this->kblength = (int)( strlen( $text ) / 1024 );
1426                 if ( $this->kblength > $wgMaxArticleSize ) {
1427                         $this->tooBig = true;
1428                         $status->setResult( false, self::AS_MAX_ARTICLE_SIZE_EXCEEDED );
1429                         wfProfileOut( __METHOD__ );
1430                         return $status;
1431                 }
1432
1433                 $flags = EDIT_DEFER_UPDATES | EDIT_AUTOSUMMARY |
1434                         ( $new ? EDIT_NEW : EDIT_UPDATE ) |
1435                         ( ( $this->minoredit && !$this->isNew ) ? EDIT_MINOR : 0 ) |
1436                         ( $bot ? EDIT_FORCE_BOT : 0 );
1437
1438                 $doEditStatus = $this->mArticle->doEdit( $text, $this->summary, $flags );
1439
1440                 if ( $doEditStatus->isOK() ) {
1441                         $result['redirect'] = Title::newFromRedirect( $text ) !== null;
1442                         $this->commitWatch();
1443                         wfProfileOut( __METHOD__ );
1444                         return $status;
1445                 } else {
1446                         $this->isConflict = true;
1447                         $doEditStatus->value = self::AS_END; // Destroys data doEdit() put in $status->value but who cares
1448                         wfProfileOut( __METHOD__ );
1449                         return $doEditStatus;
1450                 }
1451         }
1452
1453         /**
1454          * Commit the change of watch status
1455          */
1456         protected function commitWatch() {
1457                 global $wgUser;
1458                 if ( $this->watchthis xor $this->mTitle->userIsWatching() ) {
1459                         $dbw = wfGetDB( DB_MASTER );
1460                         $dbw->begin( __METHOD__ );
1461                         if ( $this->watchthis ) {
1462                                 WatchAction::doWatch( $this->mTitle, $wgUser );
1463                         } else {
1464                                 WatchAction::doUnwatch( $this->mTitle, $wgUser );
1465                         }
1466                         $dbw->commit( __METHOD__ );
1467                 }
1468         }
1469
1470         /**
1471          * Check if no edits were made by other users since
1472          * the time a user started editing the page. Limit to
1473          * 50 revisions for the sake of performance.
1474          *
1475          * @param $id int
1476          * @param $edittime string
1477          *
1478          * @return bool
1479          */
1480         protected function userWasLastToEdit( $id, $edittime ) {
1481                 if ( !$id ) return false;
1482                 $dbw = wfGetDB( DB_MASTER );
1483                 $res = $dbw->select( 'revision',
1484                         'rev_user',
1485                         array(
1486                                 'rev_page' => $this->mTitle->getArticleID(),
1487                                 'rev_timestamp > ' . $dbw->addQuotes( $dbw->timestamp( $edittime ) )
1488                         ),
1489                         __METHOD__,
1490                         array( 'ORDER BY' => 'rev_timestamp ASC', 'LIMIT' => 50 ) );
1491                 foreach ( $res as $row ) {
1492                         if ( $row->rev_user != $id ) {
1493                                 return false;
1494                         }
1495                 }
1496                 return true;
1497         }
1498
1499         /**
1500          * @private
1501          * @todo document
1502          *
1503          * @parma $editText string
1504          *
1505          * @return bool
1506          */
1507         function mergeChangesInto( &$editText ) {
1508                 wfProfileIn( __METHOD__ );
1509
1510                 $db = wfGetDB( DB_MASTER );
1511
1512                 // This is the revision the editor started from
1513                 $baseRevision = $this->getBaseRevision();
1514                 if ( is_null( $baseRevision ) ) {
1515                         wfProfileOut( __METHOD__ );
1516                         return false;
1517                 }
1518                 $baseText = $baseRevision->getText();
1519
1520                 // The current state, we want to merge updates into it
1521                 $currentRevision = Revision::loadFromTitle( $db, $this->mTitle );
1522                 if ( is_null( $currentRevision ) ) {
1523                         wfProfileOut( __METHOD__ );
1524                         return false;
1525                 }
1526                 $currentText = $currentRevision->getText();
1527
1528                 $result = '';
1529                 if ( wfMerge( $baseText, $editText, $currentText, $result ) ) {
1530                         $editText = $result;
1531                         wfProfileOut( __METHOD__ );
1532                         return true;
1533                 } else {
1534                         wfProfileOut( __METHOD__ );
1535                         return false;
1536                 }
1537         }
1538
1539         /**
1540          * @return Revision
1541          */
1542         function getBaseRevision() {
1543                 if ( !$this->mBaseRevision ) {
1544                         $db = wfGetDB( DB_MASTER );
1545                         $baseRevision = Revision::loadFromTimestamp(
1546                                 $db, $this->mTitle, $this->edittime );
1547                         return $this->mBaseRevision = $baseRevision;
1548                 } else {
1549                         return $this->mBaseRevision;
1550                 }
1551         }
1552
1553         /**
1554          * Check given input text against $wgSpamRegex, and return the text of the first match.
1555          *
1556          * @param $text string
1557          *
1558          * @return string|bool matching string or false
1559          */
1560         public static function matchSpamRegex( $text ) {
1561                 global $wgSpamRegex;
1562                 // For back compatibility, $wgSpamRegex may be a single string or an array of regexes.
1563                 $regexes = (array)$wgSpamRegex;
1564                 return self::matchSpamRegexInternal( $text, $regexes );
1565         }
1566
1567         /**
1568          * Check given input text against $wgSpamRegex, and return the text of the first match.
1569          *
1570          * @parma $text string
1571          *
1572          * @return string|bool  matching string or false
1573          */
1574         public static function matchSummarySpamRegex( $text ) {
1575                 global $wgSummarySpamRegex;
1576                 $regexes = (array)$wgSummarySpamRegex;
1577                 return self::matchSpamRegexInternal( $text, $regexes );
1578         }
1579
1580         /**
1581          * @param $text string
1582          * @param $regexes array
1583          * @return bool|string
1584          */
1585         protected static function matchSpamRegexInternal( $text, $regexes ) {
1586                 foreach ( $regexes as $regex ) {
1587                         $matches = array();
1588                         if ( preg_match( $regex, $text, $matches ) ) {
1589                                 return $matches[0];
1590                         }
1591                 }
1592                 return false;
1593         }
1594
1595         function setHeaders() {
1596                 global $wgOut, $wgUser;
1597
1598                 $wgOut->addModules( 'mediawiki.action.edit' );
1599
1600                 if ( $wgUser->getOption( 'uselivepreview', false ) ) {
1601                         $wgOut->addModules( 'mediawiki.legacy.preview' );
1602                 }
1603                 // Bug #19334: textarea jumps when editing articles in IE8
1604                 $wgOut->addStyle( 'common/IE80Fixes.css', 'screen', 'IE 8' );
1605
1606                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1607
1608                 # Enabled article-related sidebar, toplinks, etc.
1609                 $wgOut->setArticleRelated( true );
1610
1611                 $contextTitle = $this->getContextTitle();
1612                 if ( $this->isConflict ) {
1613                         $msg = 'editconflict';
1614                 } elseif ( $contextTitle->exists() && $this->section != '' ) {
1615                         $msg = $this->section == 'new' ? 'editingcomment' : 'editingsection';
1616                 } else {
1617                         $msg = $contextTitle->exists() || ( $contextTitle->getNamespace() == NS_MEDIAWIKI && $contextTitle->getDefaultMessageText() !== false ) ?
1618                                 'editing' : 'creating';
1619                 }
1620                 # Use the title defined by DISPLAYTITLE magic word when present
1621                 $displayTitle = isset( $this->mParserOutput ) ? $this->mParserOutput->getDisplayTitle() : false;
1622                 if ( $displayTitle === false ) {
1623                         $displayTitle = $contextTitle->getPrefixedText();
1624                 }
1625                 $wgOut->setPageTitle( wfMessage( $msg, $displayTitle ) );
1626         }
1627
1628         /**
1629          * Show all applicable editing introductions
1630          */
1631         protected function showIntro() {
1632                 global $wgOut, $wgUser;
1633                 if ( $this->suppressIntro ) {
1634                         return;
1635                 }
1636
1637                 $namespace = $this->mTitle->getNamespace();
1638
1639                 if ( $namespace == NS_MEDIAWIKI ) {
1640                         # Show a warning if editing an interface message
1641                         $wgOut->wrapWikiMsg( "<div class='mw-editinginterface'>\n$1\n</div>", 'editinginterface' );
1642                 } else if( $namespace == NS_FILE ) {
1643                         # Show a hint to shared repo
1644                         $file = wfFindFile( $this->mTitle );
1645                         if( $file && !$file->isLocal() ) {
1646                                 $descUrl = $file->getDescriptionUrl();
1647                                 # there must be a description url to show a hint to shared repo
1648                                 if( $descUrl ) {
1649                                         if( !$this->mTitle->exists() ) {
1650                                                 $wgOut->wrapWikiMsg( "<div class=\"mw-sharedupload-desc-create\">\n$1\n</div>", array (
1651                                                                         'sharedupload-desc-create', $file->getRepo()->getDisplayName(), $descUrl
1652                                                 ) );
1653                                         } else {
1654                                                 $wgOut->wrapWikiMsg( "<div class=\"mw-sharedupload-desc-edit\">\n$1\n</div>", array(
1655                                                                         'sharedupload-desc-edit', $file->getRepo()->getDisplayName(), $descUrl
1656                                                 ) );
1657                                         }
1658                                 }
1659                         }
1660                 }
1661
1662                 # Show a warning message when someone creates/edits a user (talk) page but the user does not exist
1663                 # Show log extract when the user is currently blocked
1664                 if ( $namespace == NS_USER || $namespace == NS_USER_TALK ) {
1665                         $parts = explode( '/', $this->mTitle->getText(), 2 );
1666                         $username = $parts[0];
1667                         $user = User::newFromName( $username, false /* allow IP users*/ );
1668                         $ip = User::isIP( $username );
1669                         if ( !( $user && $user->isLoggedIn() ) && !$ip ) { # User does not exist
1670                                 $wgOut->wrapWikiMsg( "<div class=\"mw-userpage-userdoesnotexist error\">\n$1\n</div>",
1671                                         array( 'userpage-userdoesnotexist', wfEscapeWikiText( $username ) ) );
1672                         } elseif ( $user->isBlocked() ) { # Show log extract if the user is currently blocked
1673                                 LogEventsList::showLogExtract(
1674                                         $wgOut,
1675                                         'block',
1676                                         $user->getUserPage(),
1677                                         '',
1678                                         array(
1679                                                 'lim' => 1,
1680                                                 'showIfEmpty' => false,
1681                                                 'msgKey' => array(
1682                                                         'blocked-notice-logextract',
1683                                                         $user->getName() # Support GENDER in notice
1684                                                 )
1685                                         )
1686                                 );
1687                         }
1688                 }
1689                 # Try to add a custom edit intro, or use the standard one if this is not possible.
1690                 if ( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
1691                         if ( $wgUser->isLoggedIn() ) {
1692                                 $wgOut->wrapWikiMsg( "<div class=\"mw-newarticletext\">\n$1\n</div>", 'newarticletext' );
1693                         } else {
1694                                 $wgOut->wrapWikiMsg( "<div class=\"mw-newarticletextanon\">\n$1\n</div>", 'newarticletextanon' );
1695                         }
1696                 }
1697                 # Give a notice if the user is editing a deleted/moved page...
1698                 if ( !$this->mTitle->exists() ) {
1699                         LogEventsList::showLogExtract( $wgOut, array( 'delete', 'move' ), $this->mTitle,
1700                                 '', array( 'lim' => 10,
1701                                            'conds' => array( "log_action != 'revision'" ),
1702                                            'showIfEmpty' => false,
1703                                            'msgKey' => array( 'recreate-moveddeleted-warn' ) )
1704                         );
1705                 }
1706         }
1707
1708         /**
1709          * Attempt to show a custom editing introduction, if supplied
1710          *
1711          * @return bool
1712          */
1713         protected function showCustomIntro() {
1714                 if ( $this->editintro ) {
1715                         $title = Title::newFromText( $this->editintro );
1716                         if ( $title instanceof Title && $title->exists() && $title->userCan( 'read' ) ) {
1717                                 global $wgOut;
1718                                 // Added using template syntax, to take <noinclude>'s into account.
1719                                 $wgOut->addWikiTextTitleTidy( '{{:' . $title->getFullText() . '}}', $this->mTitle );
1720                                 return true;
1721                         } else {
1722                                 return false;
1723                         }
1724                 } else {
1725                         return false;
1726                 }
1727         }
1728
1729         /**
1730          * Send the edit form and related headers to $wgOut
1731          * @param $formCallback Callback that takes an OutputPage parameter; will be called
1732          *     during form output near the top, for captchas and the like.
1733          */
1734         function showEditForm( $formCallback = null ) {
1735                 global $wgOut, $wgUser;
1736
1737                 wfProfileIn( __METHOD__ );
1738
1739                 # need to parse the preview early so that we know which templates are used,
1740                 # otherwise users with "show preview after edit box" will get a blank list
1741                 # we parse this near the beginning so that setHeaders can do the title
1742                 # setting work instead of leaving it in getPreviewText
1743                 $previewOutput = '';
1744                 if ( $this->formtype == 'preview' ) {
1745                         $previewOutput = $this->getPreviewText();
1746                 }
1747
1748                 wfRunHooks( 'EditPage::showEditForm:initial', array( &$this, &$wgOut ) );
1749
1750                 $this->setHeaders();
1751
1752                 if ( $this->showHeader() === false ) {
1753                         wfProfileOut( __METHOD__ );
1754                         return;
1755                 }
1756
1757                 $wgOut->addHTML( $this->editFormPageTop );
1758
1759                 if ( $wgUser->getOption( 'previewontop' ) ) {
1760                         $this->displayPreviewArea( $previewOutput, true );
1761                 }
1762
1763                 $wgOut->addHTML( $this->editFormTextTop );
1764
1765                 $showToolbar = true;
1766                 if ( $this->wasDeletedSinceLastEdit() ) {
1767                         if ( $this->formtype == 'save' ) {
1768                                 // Hide the toolbar and edit area, user can click preview to get it back
1769                                 // Add an confirmation checkbox and explanation.
1770                                 $showToolbar = false;
1771                         } else {
1772                                 $wgOut->wrapWikiMsg( "<div class='error mw-deleted-while-editing'>\n$1\n</div>",
1773                                         'deletedwhileediting' );
1774                         }
1775                 }
1776
1777                 $wgOut->addHTML( Html::openElement( 'form', array( 'id' => self::EDITFORM_ID, 'name' => self::EDITFORM_ID,
1778                         'method' => 'post', 'action' => $this->getActionURL( $this->getContextTitle() ),
1779                         'enctype' => 'multipart/form-data' ) ) );
1780
1781                 if ( is_callable( $formCallback ) ) {
1782                         call_user_func_array( $formCallback, array( &$wgOut ) );
1783                 }
1784
1785                 wfRunHooks( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );
1786
1787                 // Put these up at the top to ensure they aren't lost on early form submission
1788                 $this->showFormBeforeText();
1789
1790                 if ( $this->wasDeletedSinceLastEdit() && 'save' == $this->formtype ) {
1791                         $username = $this->lastDelete->user_name;
1792                         $comment = $this->lastDelete->log_comment;
1793
1794                         // It is better to not parse the comment at all than to have templates expanded in the middle
1795                         // TODO: can the checkLabel be moved outside of the div so that wrapWikiMsg could be used?
1796                         $key = $comment === ''
1797                                 ? 'confirmrecreate-noreason'
1798                                 : 'confirmrecreate';
1799                         $wgOut->addHTML(
1800                                 '<div class="mw-confirm-recreate">' .
1801                                 wfMsgExt( $key, 'parseinline', $username, "<nowiki>$comment</nowiki>" ) .
1802                                 Xml::checkLabel( wfMsg( 'recreate' ), 'wpRecreate', 'wpRecreate', false,
1803                                         array( 'title' => Linker::titleAttrib( 'recreate' ), 'tabindex' => 1, 'id' => 'wpRecreate' )
1804                                 ) .
1805                                 '</div>'
1806                         );
1807                 }
1808
1809                 # When the summary is hidden, also hide them on preview/show changes
1810                 if( $this->nosummary ) {
1811                         $wgOut->addHTML( Html::hidden( 'nosummary', true ) );
1812                 }
1813
1814                 # If a blank edit summary was previously provided, and the appropriate
1815                 # user preference is active, pass a hidden tag as wpIgnoreBlankSummary. This will stop the
1816                 # user being bounced back more than once in the event that a summary
1817                 # is not required.
1818                 #####
1819                 # For a bit more sophisticated detection of blank summaries, hash the
1820                 # automatic one and pass that in the hidden field wpAutoSummary.
1821                 if ( $this->missingSummary || ( $this->section == 'new' && $this->nosummary ) ) {
1822                         $wgOut->addHTML( Html::hidden( 'wpIgnoreBlankSummary', true ) );
1823                 }
1824
1825                 if ( $this->hasPresetSummary ) {
1826                         // If a summary has been preset using &summary= we dont want to prompt for
1827                         // a different summary. Only prompt for a summary if the summary is blanked.
1828                         // (Bug 17416)
1829                         $this->autoSumm = md5( '' );
1830                 }
1831
1832                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
1833                 $wgOut->addHTML( Html::hidden( 'wpAutoSummary', $autosumm ) );
1834
1835                 $wgOut->addHTML( Html::hidden( 'oldid', $this->oldid ) );
1836
1837                 if ( $this->section == 'new' ) {
1838                         $this->showSummaryInput( true, $this->summary );
1839                         $wgOut->addHTML( $this->getSummaryPreview( true, $this->summary ) );
1840                 }
1841
1842                 $wgOut->addHTML( $this->editFormTextBeforeContent );
1843
1844                 if ( !$this->isCssJsSubpage && $showToolbar && $wgUser->getOption( 'showtoolbar' ) ) {
1845                         $wgOut->addHTML( EditPage::getEditToolbar() );
1846                 }
1847
1848                 if ( $this->isConflict ) {
1849                         // In an edit conflict bypass the overrideable content form method
1850                         // and fallback to the raw wpTextbox1 since editconflicts can't be
1851                         // resolved between page source edits and custom ui edits using the
1852                         // custom edit ui.
1853                         $this->textbox2 = $this->textbox1;
1854                         $this->textbox1 = $this->getCurrentText();
1855
1856                         $this->showTextbox1();
1857                 } else {
1858                         $this->showContentForm();
1859                 }
1860
1861                 $wgOut->addHTML( $this->editFormTextAfterContent );
1862
1863                 $wgOut->addWikiText( $this->getCopywarn() );
1864
1865                 $wgOut->addHTML( $this->editFormTextAfterWarn );
1866
1867                 $this->showStandardInputs();
1868
1869                 $this->showFormAfterText();
1870
1871                 $this->showTosSummary();
1872
1873                 $this->showEditTools();
1874
1875                 $wgOut->addHTML( $this->editFormTextAfterTools . "\n" );
1876
1877                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'templatesUsed' ),
1878                         Linker::formatTemplates( $this->getTemplates(), $this->preview, $this->section != '' ) ) );
1879
1880                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'hiddencats' ),
1881                         Linker::formatHiddenCategories( $this->mArticle->getHiddenCategories() ) ) );
1882
1883                 if ( $this->isConflict ) {
1884                         $this->showConflict();
1885                 }
1886
1887                 $wgOut->addHTML( $this->editFormTextBottom . "\n</form>\n" );
1888
1889                 if ( !$wgUser->getOption( 'previewontop' ) ) {
1890                         $this->displayPreviewArea( $previewOutput, false );
1891                 }
1892
1893                 wfProfileOut( __METHOD__ );
1894         }
1895
1896         /**
1897          * Extract the section title from current section text, if any.
1898          *
1899          * @param string $text
1900          * @return Mixed|string or false
1901          */
1902         public static function extractSectionTitle( $text ) {
1903                 preg_match( "/^(=+)(.+)\\1\\s*(\n|$)/i", $text, $matches );
1904                 if ( !empty( $matches[2] ) ) {
1905                         global $wgParser;
1906                         return $wgParser->stripSectionName( trim( $matches[2] ) );
1907                 } else {
1908                         return false;
1909                 }
1910         }
1911
1912         protected function showHeader() {
1913                 global $wgOut, $wgUser, $wgMaxArticleSize, $wgLang;
1914
1915                 if ( $this->mTitle->isTalkPage() ) {
1916                         $wgOut->addWikiMsg( 'talkpagetext' );
1917                 }
1918
1919                 # Optional notices on a per-namespace and per-page basis
1920                 $editnotice_ns = 'editnotice-' . $this->mTitle->getNamespace();
1921                 $editnotice_ns_message = wfMessage( $editnotice_ns )->inContentLanguage();
1922                 if ( $editnotice_ns_message->exists() ) {
1923                         $wgOut->addWikiText( $editnotice_ns_message->plain() );
1924                 }
1925                 if ( MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
1926                         $parts = explode( '/', $this->mTitle->getDBkey() );
1927                         $editnotice_base = $editnotice_ns;
1928                         while ( count( $parts ) > 0 ) {
1929                                 $editnotice_base .= '-' . array_shift( $parts );
1930                                 $editnotice_base_msg = wfMessage( $editnotice_base )->inContentLanguage();
1931                                 if ( $editnotice_base_msg->exists() ) {
1932                                         $wgOut->addWikiText( $editnotice_base_msg->plain() );
1933                                 }
1934                         }
1935                 } else {
1936                         # Even if there are no subpages in namespace, we still don't want / in MW ns.
1937                         $editnoticeText = $editnotice_ns . '-' . str_replace( '/', '-', $this->mTitle->getDBkey() );
1938                         $editnoticeMsg = wfMessage( $editnoticeText )->inContentLanguage();
1939                         if ( $editnoticeMsg->exists() ) {
1940                                 $wgOut->addWikiText( $editnoticeMsg->plain() );
1941                         }
1942                 }
1943
1944                 if ( $this->isConflict ) {
1945                         $wgOut->wrapWikiMsg( "<div class='mw-explainconflict'>\n$1\n</div>", 'explainconflict' );
1946                         $this->edittime = $this->mArticle->getTimestamp();
1947                 } else {
1948                         if ( $this->section != '' && !$this->isSectionEditSupported() ) {
1949                                 // We use $this->section to much before this and getVal('wgSection') directly in other places
1950                                 // at this point we can't reset $this->section to '' to fallback to non-section editing.
1951                                 // Someone is welcome to try refactoring though
1952                                 $wgOut->showErrorPage( 'sectioneditnotsupported-title', 'sectioneditnotsupported-text' );
1953                                 return false;
1954                         }
1955
1956                         if ( $this->section != '' && $this->section != 'new' ) {
1957                                 if ( !$this->summary && !$this->preview && !$this->diff ) {
1958                                         $sectionTitle = self::extractSectionTitle( $this->textbox1 );
1959                                         if ( $sectionTitle !== false ) {
1960                                                 $this->summary = "/* $sectionTitle */ ";
1961                                         }
1962                                 }
1963                         }
1964
1965                         if ( $this->missingComment ) {
1966                                 $wgOut->wrapWikiMsg( "<div id='mw-missingcommenttext'>\n$1\n</div>", 'missingcommenttext' );
1967                         }
1968
1969                         if ( $this->missingSummary && $this->section != 'new' ) {
1970                                 $wgOut->wrapWikiMsg( "<div id='mw-missingsummary'>\n$1\n</div>", 'missingsummary' );
1971                         }
1972
1973                         if ( $this->missingSummary && $this->section == 'new' ) {
1974                                 $wgOut->wrapWikiMsg( "<div id='mw-missingcommentheader'>\n$1\n</div>", 'missingcommentheader' );
1975                         }
1976
1977                         if ( $this->hookError !== '' ) {
1978                                 $wgOut->addWikiText( $this->hookError );
1979                         }
1980
1981                         if ( !$this->checkUnicodeCompliantBrowser() ) {
1982                                 $wgOut->addWikiMsg( 'nonunicodebrowser' );
1983                         }
1984
1985                         if ( $this->section != 'new' ) {
1986                                 $revision = $this->mArticle->getRevisionFetched();
1987                                 if ( $revision ) {
1988                                         // Let sysop know that this will make private content public if saved
1989
1990                                         if ( !$revision->userCan( Revision::DELETED_TEXT ) ) {
1991                                                 $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n", 'rev-deleted-text-permission' );
1992                                         } elseif ( $revision->isDeleted( Revision::DELETED_TEXT ) ) {
1993                                                 $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n", 'rev-deleted-text-view' );
1994                                         }
1995
1996                                         if ( !$revision->isCurrent() ) {
1997                                                 $this->mArticle->setOldSubtitle( $revision->getId() );
1998                                                 $wgOut->addWikiMsg( 'editingold' );
1999                                         }
2000                                 } elseif ( $this->mTitle->exists() ) {
2001                                         // Something went wrong
2002
2003                                         $wgOut->wrapWikiMsg( "<div class='errorbox'>\n$1\n</div>\n",
2004                                                 array( 'missing-article', $this->mTitle->getPrefixedText(),
2005                                                 wfMsgNoTrans( 'missingarticle-rev', $this->oldid ) ) );
2006                                 }
2007                         }
2008                 }
2009
2010                 if ( wfReadOnly() ) {
2011                         $wgOut->wrapWikiMsg( "<div id=\"mw-read-only-warning\">\n$1\n</div>", array( 'readonlywarning', wfReadOnlyReason() ) );
2012                 } elseif ( $wgUser->isAnon() ) {
2013                         if ( $this->formtype != 'preview' ) {
2014                                 $wgOut->wrapWikiMsg( "<div id=\"mw-anon-edit-warning\">\n$1</div>", 'anoneditwarning' );
2015                         } else {
2016                                 $wgOut->wrapWikiMsg( "<div id=\"mw-anon-preview-warning\">\n$1</div>", 'anonpreviewwarning' );
2017                         }
2018                 } else {
2019                         if ( $this->isCssJsSubpage ) {
2020                                 # Check the skin exists
2021                                 if ( $this->isWrongCaseCssJsPage ) {
2022                                         $wgOut->wrapWikiMsg( "<div class='error' id='mw-userinvalidcssjstitle'>\n$1\n</div>", array( 'userinvalidcssjstitle', $this->mTitle->getSkinFromCssJsSubpage() ) );
2023                                 }
2024                                 if ( $this->formtype !== 'preview' ) {
2025                                         if ( $this->isCssSubpage )
2026                                                 $wgOut->wrapWikiMsg( "<div id='mw-usercssyoucanpreview'>\n$1\n</div>", array( 'usercssyoucanpreview' ) );
2027                                         if ( $this->isJsSubpage )
2028                                                 $wgOut->wrapWikiMsg( "<div id='mw-userjsyoucanpreview'>\n$1\n</div>", array( 'userjsyoucanpreview' ) );
2029                                 }
2030                         }
2031                 }
2032
2033                 if ( $this->mTitle->getNamespace() != NS_MEDIAWIKI && $this->mTitle->isProtected( 'edit' ) ) {
2034                         # Is the title semi-protected?
2035                         if ( $this->mTitle->isSemiProtected() ) {
2036                                 $noticeMsg = 'semiprotectedpagewarning';
2037                         } else {
2038                                 # Then it must be protected based on static groups (regular)
2039                                 $noticeMsg = 'protectedpagewarning';
2040                         }
2041                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle, '',
2042                                 array( 'lim' => 1, 'msgKey' => array( $noticeMsg ) ) );
2043                 }
2044                 if ( $this->mTitle->isCascadeProtected() ) {
2045                         # Is this page under cascading protection from some source pages?
2046                         list( $cascadeSources, /* $restrictions */ ) = $this->mTitle->getCascadeProtectionSources();
2047                         $notice = "<div class='mw-cascadeprotectedwarning'>\n$1\n";
2048                         $cascadeSourcesCount = count( $cascadeSources );
2049                         if ( $cascadeSourcesCount > 0 ) {
2050                                 # Explain, and list the titles responsible
2051                                 foreach ( $cascadeSources as $page ) {
2052                                         $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
2053                                 }
2054                         }
2055                         $notice .= '</div>';
2056                         $wgOut->wrapWikiMsg( $notice, array( 'cascadeprotectedwarning', $cascadeSourcesCount ) );
2057                 }
2058                 if ( !$this->mTitle->exists() && $this->mTitle->getRestrictions( 'create' ) ) {
2059                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle, '',
2060                                 array( 'lim' => 1,
2061                                         'showIfEmpty' => false,
2062                                         'msgKey' => array( 'titleprotectedwarning' ),
2063                                         'wrap' => "<div class=\"mw-titleprotectedwarning\">\n$1</div>" ) );
2064                 }
2065
2066                 if ( $this->kblength === false ) {
2067                         $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
2068                 }
2069
2070                 if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
2071                         $wgOut->wrapWikiMsg( "<div class='error' id='mw-edit-longpageerror'>\n$1\n</div>",
2072                                 array( 'longpageerror', $wgLang->formatNum( $this->kblength ), $wgLang->formatNum( $wgMaxArticleSize ) ) );
2073                 } else {
2074                         if ( !wfMessage( 'longpage-hint' )->isDisabled() ) {
2075                                 $wgOut->wrapWikiMsg( "<div id='mw-edit-longpage-hint'>\n$1\n</div>",
2076                                         array( 'longpage-hint', $wgLang->formatSize( strlen( $this->textbox1 ) ), strlen( $this->textbox1 ) )
2077                                 );
2078                         }
2079                 }
2080         }
2081
2082         /**
2083          * Standard summary input and label (wgSummary), abstracted so EditPage
2084          * subclasses may reorganize the form.
2085          * Note that you do not need to worry about the label's for=, it will be
2086          * inferred by the id given to the input. You can remove them both by
2087          * passing array( 'id' => false ) to $userInputAttrs.
2088          *
2089          * @param $summary string The value of the summary input
2090          * @param $labelText string The html to place inside the label
2091          * @param $inputAttrs array of attrs to use on the input
2092          * @param $spanLabelAttrs array of attrs to use on the span inside the label
2093          *
2094          * @return array An array in the format array( $label, $input )
2095          */
2096         function getSummaryInput( $summary = "", $labelText = null, $inputAttrs = null, $spanLabelAttrs = null ) {
2097                 // Note: the maxlength is overriden in JS to 250 and to make it use UTF-8 bytes, not characters.
2098                 $inputAttrs = ( is_array( $inputAttrs ) ? $inputAttrs : array() ) + array(
2099                         'id' => 'wpSummary',
2100                         'maxlength' => '200',
2101                         'tabindex' => '1',
2102                         'size' => 60,
2103                         'spellcheck' => 'true',
2104                 ) + Linker::tooltipAndAccesskeyAttribs( 'summary' );
2105
2106                 $spanLabelAttrs = ( is_array( $spanLabelAttrs ) ? $spanLabelAttrs : array() ) + array(
2107                         'class' => $this->missingSummary ? 'mw-summarymissed' : 'mw-summary',
2108                         'id' => "wpSummaryLabel"
2109                 );
2110
2111                 $label = null;
2112                 if ( $labelText ) {
2113                         $label = Xml::tags( 'label', $inputAttrs['id'] ? array( 'for' => $inputAttrs['id'] ) : null, $labelText );
2114                         $label = Xml::tags( 'span', $spanLabelAttrs, $label );
2115                 }
2116
2117                 $input = Html::input( 'wpSummary', $summary, 'text', $inputAttrs );
2118
2119                 return array( $label, $input );
2120         }
2121
2122         /**
2123          * @param $isSubjectPreview Boolean: true if this is the section subject/title
2124          *                          up top, or false if this is the comment summary
2125          *                          down below the textarea
2126          * @param $summary String: The text of the summary to display
2127          * @return String
2128          */
2129         protected function showSummaryInput( $isSubjectPreview, $summary = "" ) {
2130                 global $wgOut, $wgContLang;
2131                 # Add a class if 'missingsummary' is triggered to allow styling of the summary line
2132                 $summaryClass = $this->missingSummary ? 'mw-summarymissed' : 'mw-summary';
2133                 if ( $isSubjectPreview ) {
2134                         if ( $this->nosummary ) {
2135                                 return;
2136                         }
2137                 } else {
2138                         if ( !$this->mShowSummaryField ) {
2139                                 return;
2140                         }
2141                 }
2142                 $summary = $wgContLang->recodeForEdit( $summary );
2143                 $labelText = wfMsgExt( $isSubjectPreview ? 'subject' : 'summary', 'parseinline' );
2144                 list( $label, $input ) = $this->getSummaryInput( $summary, $labelText, array( 'class' => $summaryClass ), array() );
2145                 $wgOut->addHTML( "{$label} {$input}" );
2146         }
2147
2148         /**
2149          * @param $isSubjectPreview Boolean: true if this is the section subject/title
2150          *                          up top, or false if this is the comment summary
2151          *                          down below the textarea
2152          * @param $summary String: the text of the summary to display
2153          * @return String
2154          */
2155         protected function getSummaryPreview( $isSubjectPreview, $summary = "" ) {
2156                 if ( !$summary || ( !$this->preview && !$this->diff ) )
2157                         return "";
2158
2159                 global $wgParser;
2160
2161                 if ( $isSubjectPreview )
2162                         $summary = wfMsgForContent( 'newsectionsummary', $wgParser->stripSectionName( $summary ) );
2163
2164                 $message = $isSubjectPreview ? 'subject-preview' : 'summary-preview';
2165
2166                 $summary = wfMsgExt( $message, 'parseinline' ) . Linker::commentBlock( $summary, $this->mTitle, $isSubjectPreview );
2167                 return Xml::tags( 'div', array( 'class' => 'mw-summary-preview' ), $summary );
2168         }
2169
2170         protected function showFormBeforeText() {
2171                 global $wgOut;
2172                 $section = htmlspecialchars( $this->section );
2173                 $wgOut->addHTML( <<<HTML
2174 <input type='hidden' value="{$section}" name="wpSection" />
2175 <input type='hidden' value="{$this->starttime}" name="wpStarttime" />
2176 <input type='hidden' value="{$this->edittime}" name="wpEdittime" />
2177 <input type='hidden' value="{$this->scrolltop}" name="wpScrolltop" id="wpScrolltop" />
2178
2179 HTML
2180                 );
2181                 if ( !$this->checkUnicodeCompliantBrowser() )
2182                         $wgOut->addHTML( Html::hidden( 'safemode', '1' ) );
2183         }
2184
2185         protected function showFormAfterText() {
2186                 global $wgOut, $wgUser;
2187                 /**
2188                  * To make it harder for someone to slip a user a page
2189                  * which submits an edit form to the wiki without their
2190                  * knowledge, a random token is associated with the login
2191                  * session. If it's not passed back with the submission,
2192                  * we won't save the page, or render user JavaScript and
2193                  * CSS previews.
2194                  *
2195                  * For anon editors, who may not have a session, we just
2196                  * include the constant suffix to prevent editing from
2197                  * broken text-mangling proxies.
2198                  */
2199                 $wgOut->addHTML( "\n" . Html::hidden( "wpEditToken", $wgUser->getEditToken() ) . "\n" );
2200         }
2201
2202         /**
2203          * Subpage overridable method for printing the form for page content editing
2204          * By default this simply outputs wpTextbox1
2205          * Subclasses can override this to provide a custom UI for editing;
2206          * be it a form, or simply wpTextbox1 with a modified content that will be
2207          * reverse modified when extracted from the post data.
2208          * Note that this is basically the inverse for importContentFormData
2209          */
2210         protected function showContentForm() {
2211                 $this->showTextbox1();
2212         }
2213
2214         /**
2215          * Method to output wpTextbox1
2216          * The $textoverride method can be used by subclasses overriding showContentForm
2217          * to pass back to this method.
2218          *
2219          * @param $customAttribs array of html attributes to use in the textarea
2220          * @param $textoverride String: optional text to override $this->textarea1 with
2221          */
2222         protected function showTextbox1( $customAttribs = null, $textoverride = null ) {
2223                 if ( $this->wasDeletedSinceLastEdit() && $this->formtype == 'save' ) {
2224                         $attribs = array( 'style' => 'display:none;' );
2225                 } else {
2226                         $classes = array(); // Textarea CSS
2227                         if ( $this->mTitle->getNamespace() != NS_MEDIAWIKI && $this->mTitle->isProtected( 'edit' ) ) {
2228                                 # Is the title semi-protected?
2229                                 if ( $this->mTitle->isSemiProtected() ) {
2230                                         $classes[] = 'mw-textarea-sprotected';
2231                                 } else {
2232                                         # Then it must be protected based on static groups (regular)
2233                                         $classes[] = 'mw-textarea-protected';
2234                                 }
2235                                 # Is the title cascade-protected?
2236                                 if ( $this->mTitle->isCascadeProtected() ) {
2237                                         $classes[] = 'mw-textarea-cprotected';
2238                                 }
2239                         }
2240
2241                         $attribs = array( 'tabindex' => 1 );
2242
2243                         if ( is_array( $customAttribs ) ) {
2244                                 $attribs += $customAttribs;
2245                         }
2246
2247                         if ( count( $classes ) ) {
2248                                 if ( isset( $attribs['class'] ) ) {
2249                                         $classes[] = $attribs['class'];
2250                                 }
2251                                 $attribs['class'] = implode( ' ', $classes );
2252                         }
2253                 }
2254
2255                 $this->showTextbox( $textoverride !== null ? $textoverride : $this->textbox1, 'wpTextbox1', $attribs );
2256         }
2257
2258         protected function showTextbox2() {
2259                 $this->showTextbox( $this->textbox2, 'wpTextbox2', array( 'tabindex' => 6, 'readonly' ) );
2260         }
2261
2262         protected function showTextbox( $content, $name, $customAttribs = array() ) {
2263                 global $wgOut, $wgUser;
2264
2265                 $wikitext = $this->safeUnicodeOutput( $content );
2266                 if ( strval( $wikitext ) !== '' ) {
2267                         // Ensure there's a newline at the end, otherwise adding lines
2268                         // is awkward.
2269                         // But don't add a newline if the ext is empty, or Firefox in XHTML
2270                         // mode will show an extra newline. A bit annoying.
2271                         $wikitext .= "\n";
2272                 }
2273
2274                 $attribs = $customAttribs + array(
2275                         'accesskey' => ',',
2276                         'id'   => $name,
2277                         'cols' => $wgUser->getIntOption( 'cols' ),
2278                         'rows' => $wgUser->getIntOption( 'rows' ),
2279                         'style' => '' // avoid php notices when appending preferences (appending allows customAttribs['style'] to still work
2280                 );
2281
2282                 $pageLang = $this->mTitle->getPageLanguage();
2283                 $attribs['lang'] = $pageLang->getCode();
2284                 $attribs['dir'] = $pageLang->getDir();
2285
2286                 $wgOut->addHTML( Html::textarea( $name, $wikitext, $attribs ) );
2287         }
2288
2289         protected function displayPreviewArea( $previewOutput, $isOnTop = false ) {
2290                 global $wgOut;
2291                 $classes = array();
2292                 if ( $isOnTop )
2293                         $classes[] = 'ontop';
2294
2295                 $attribs = array( 'id' => 'wikiPreview', 'class' => implode( ' ', $classes ) );
2296
2297                 if ( $this->formtype != 'preview' )
2298                         $attribs['style'] = 'display: none;';
2299
2300                 $wgOut->addHTML( Xml::openElement( 'div', $attribs ) );
2301
2302                 if ( $this->formtype == 'preview' ) {
2303                         $this->showPreview( $previewOutput );
2304                 }
2305
2306                 $wgOut->addHTML( '</div>' );
2307
2308                 if ( $this->formtype == 'diff' ) {
2309                         $this->showDiff();
2310                 }
2311         }
2312
2313         /**
2314          * Append preview output to $wgOut.
2315          * Includes category rendering if this is a category page.
2316          *
2317          * @param $text String: the HTML to be output for the preview.
2318          */
2319         protected function showPreview( $text ) {
2320                 global $wgOut;
2321                 if ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
2322                         $this->mArticle->openShowCategory();
2323                 }
2324                 # This hook seems slightly odd here, but makes things more
2325                 # consistent for extensions.
2326                 wfRunHooks( 'OutputPageBeforeHTML', array( &$wgOut, &$text ) );
2327                 $wgOut->addHTML( $text );
2328                 if ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
2329                         $this->mArticle->closeShowCategory();
2330                 }
2331         }
2332
2333         /**
2334          * Get a diff between the current contents of the edit box and the
2335          * version of the page we're editing from.
2336          *
2337          * If this is a section edit, we'll replace the section as for final
2338          * save and then make a comparison.
2339          */
2340         function showDiff() {
2341                 global $wgUser, $wgContLang, $wgParser, $wgOut;
2342
2343                 $oldtitlemsg = 'currentrev';
2344                 # if message does not exist, show diff against the preloaded default
2345                 if( $this->mTitle->getNamespace() == NS_MEDIAWIKI && !$this->mTitle->exists() ) {
2346                         $oldtext = $this->mTitle->getDefaultMessageText();
2347                         if( $oldtext !== false ) {
2348                                 $oldtitlemsg = 'defaultmessagetext';
2349                         }
2350                 } else {
2351                         $oldtext = $this->mArticle->getRawText();
2352                 }
2353                 $newtext = $this->mArticle->replaceSection(
2354                         $this->section, $this->textbox1, $this->summary, $this->edittime );
2355
2356                 wfRunHooks( 'EditPageGetDiffText', array( $this, &$newtext ) );
2357
2358                 $popts = ParserOptions::newFromUserAndLang( $wgUser, $wgContLang );
2359                 $newtext = $wgParser->preSaveTransform( $newtext, $this->mTitle, $wgUser, $popts );
2360
2361                 if ( $oldtext !== false  || $newtext != '' ) {
2362                         $oldtitle = wfMsgExt( $oldtitlemsg, array( 'parseinline' ) );
2363                         $newtitle = wfMsgExt( 'yourtext', array( 'parseinline' ) );
2364
2365                         $de = new DifferenceEngine( $this->mArticle->getContext() );
2366                         $de->setText( $oldtext, $newtext );
2367                         $difftext = $de->getDiff( $oldtitle, $newtitle );
2368                         $de->showDiffStyle();
2369                 } else {
2370                         $difftext = '';
2371                 }
2372
2373                 $wgOut->addHTML( '<div id="wikiDiff">' . $difftext . '</div>' );
2374         }
2375
2376         /**
2377          * Give a chance for site and per-namespace customizations of
2378          * terms of service summary link that might exist separately
2379          * from the copyright notice.
2380          *
2381          * This will display between the save button and the edit tools,
2382          * so should remain short!
2383          */
2384         protected function showTosSummary() {
2385                 $msg = 'editpage-tos-summary';
2386                 wfRunHooks( 'EditPageTosSummary', array( $this->mTitle, &$msg ) );
2387                 if ( !wfMessage( $msg )->isDisabled() ) {
2388                         global $wgOut;
2389                         $wgOut->addHTML( '<div class="mw-tos-summary">' );
2390                         $wgOut->addWikiMsg( $msg );
2391                         $wgOut->addHTML( '</div>' );
2392                 }
2393         }
2394
2395         protected function showEditTools() {
2396                 global $wgOut;
2397                 $wgOut->addHTML( '<div class="mw-editTools">' .
2398                         wfMessage( 'edittools' )->inContentLanguage()->parse() .
2399                         '</div>' );
2400         }
2401
2402         protected function getCopywarn() {
2403                 global $wgRightsText;
2404                 if ( $wgRightsText ) {
2405                         $copywarnMsg = array( 'copyrightwarning',
2406                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
2407                                 $wgRightsText );
2408                 } else {
2409                         $copywarnMsg = array( 'copyrightwarning2',
2410                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]' );
2411                 }
2412                 // Allow for site and per-namespace customization of contribution/copyright notice.
2413                 wfRunHooks( 'EditPageCopyrightWarning', array( $this->mTitle, &$copywarnMsg ) );
2414
2415                 return "<div id=\"editpage-copywarn\">\n" .
2416                         call_user_func_array( "wfMsgNoTrans", $copywarnMsg ) . "\n</div>";
2417         }
2418
2419         protected function showStandardInputs( &$tabindex = 2 ) {
2420                 global $wgOut;
2421                 $wgOut->addHTML( "<div class='editOptions'>\n" );
2422
2423                 if ( $this->section != 'new' ) {
2424                         $this->showSummaryInput( false, $this->summary );
2425                         $wgOut->addHTML( $this->getSummaryPreview( false, $this->summary ) );
2426                 }
2427
2428                 $checkboxes = $this->getCheckboxes( $tabindex,
2429                         array( 'minor' => $this->minoredit, 'watch' => $this->watchthis ) );
2430                 $wgOut->addHTML( "<div class='editCheckboxes'>" . implode( $checkboxes, "\n" ) . "</div>\n" );
2431                 $wgOut->addHTML( "<div class='editButtons'>\n" );
2432                 $wgOut->addHTML( implode( $this->getEditButtons( $tabindex ), "\n" ) . "\n" );
2433
2434                 $cancel = $this->getCancelLink();
2435                 if ( $cancel !== '' ) {
2436                         $cancel .= wfMsgExt( 'pipe-separator' , 'escapenoentities' );
2437                 }
2438                 $edithelpurl = Skin::makeInternalOrExternalUrl( wfMsgForContent( 'edithelppage' ) );
2439                 $edithelp = '<a target="helpwindow" href="' . $edithelpurl . '">' .
2440                         htmlspecialchars( wfMsg( 'edithelp' ) ) . '</a> ' .
2441                         htmlspecialchars( wfMsg( 'newwindow' ) );
2442                 $wgOut->addHTML( "      <span class='editHelp'>{$cancel}{$edithelp}</span>\n" );
2443                 $wgOut->addHTML( "</div><!-- editButtons -->\n</div><!-- editOptions -->\n" );
2444         }
2445
2446         /**
2447          * Show an edit conflict. textbox1 is already shown in showEditForm().
2448          * If you want to use another entry point to this function, be careful.
2449          */
2450         protected function showConflict() {
2451                 global $wgOut;
2452
2453                 if ( wfRunHooks( 'EditPageBeforeConflictDiff', array( &$this, &$wgOut ) ) ) {
2454                         $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
2455
2456                         $de = new DifferenceEngine( $this->mArticle->getContext() );
2457                         $de->setText( $this->textbox2, $this->textbox1 );
2458                         $de->showDiff( wfMsgExt( 'yourtext', 'parseinline' ), wfMsg( 'storedversion' ) );
2459
2460                         $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
2461                         $this->showTextbox2();
2462                 }
2463         }
2464
2465         /**
2466          * @return string
2467          */
2468         public function getCancelLink() {
2469                 $cancelParams = array();
2470                 if ( !$this->isConflict && $this->oldid > 0 ) {
2471                         $cancelParams['oldid'] = $this->oldid;
2472                 }
2473
2474                 return Linker::linkKnown(
2475                         $this->getContextTitle(),
2476                         wfMsgExt( 'cancel', array( 'parseinline' ) ),
2477                         array( 'id' => 'mw-editform-cancel' ),
2478                         $cancelParams
2479                 );
2480         }
2481
2482         /**
2483          * Returns the URL to use in the form's action attribute.
2484          * This is used by EditPage subclasses when simply customizing the action
2485          * variable in the constructor is not enough. This can be used when the
2486          * EditPage lives inside of a Special page rather than a custom page action.
2487          *
2488          * @param $title Title object for which is being edited (where we go to for &action= links)
2489          * @return string
2490          */
2491         protected function getActionURL( Title $title ) {
2492                 return $title->getLocalURL( array( 'action' => $this->action ) );
2493         }
2494
2495         /**
2496          * Check if a page was deleted while the user was editing it, before submit.
2497          * Note that we rely on the logging table, which hasn't been always there,
2498          * but that doesn't matter, because this only applies to brand new
2499          * deletes.
2500          */
2501         protected function wasDeletedSinceLastEdit() {
2502                 if ( $this->deletedSinceEdit !== null ) {
2503                         return $this->deletedSinceEdit;
2504                 }
2505
2506                 $this->deletedSinceEdit = false;
2507
2508                 if ( $this->mTitle->isDeletedQuick() ) {
2509                         $this->lastDelete = $this->getLastDelete();
2510                         if ( $this->lastDelete ) {
2511                                 $deleteTime = wfTimestamp( TS_MW, $this->lastDelete->log_timestamp );
2512                                 if ( $deleteTime > $this->starttime ) {
2513                                         $this->deletedSinceEdit = true;
2514                                 }
2515                         }
2516                 }
2517
2518                 return $this->deletedSinceEdit;
2519         }
2520
2521         protected function getLastDelete() {
2522                 $dbr = wfGetDB( DB_SLAVE );
2523                 $data = $dbr->selectRow(
2524                         array( 'logging', 'user' ),
2525                         array( 'log_type',
2526                                    'log_action',
2527                                    'log_timestamp',
2528                                    'log_user',
2529                                    'log_namespace',
2530                                    'log_title',
2531                                    'log_comment',
2532                                    'log_params',
2533                                    'log_deleted',
2534                                    'user_name' ),
2535                         array( 'log_namespace' => $this->mTitle->getNamespace(),
2536                                    'log_title' => $this->mTitle->getDBkey(),
2537                                    'log_type' => 'delete',
2538                                    'log_action' => 'delete',
2539                                    'user_id=log_user' ),
2540                         __METHOD__,
2541                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' )
2542                 );
2543                 // Quick paranoid permission checks...
2544                 if ( is_object( $data ) ) {
2545                         if ( $data->log_deleted & LogPage::DELETED_USER )
2546                                 $data->user_name = wfMsgHtml( 'rev-deleted-user' );
2547                         if ( $data->log_deleted & LogPage::DELETED_COMMENT )
2548                                 $data->log_comment = wfMsgHtml( 'rev-deleted-comment' );
2549                 }
2550                 return $data;
2551         }
2552
2553         /**
2554          * Get the rendered text for previewing.
2555          * @return string
2556          */
2557         function getPreviewText() {
2558                 global $wgOut, $wgUser, $wgParser, $wgRawHtml, $wgLang;
2559
2560                 wfProfileIn( __METHOD__ );
2561
2562                 if ( $wgRawHtml && !$this->mTokenOk ) {
2563                         // Could be an offsite preview attempt. This is very unsafe if
2564                         // HTML is enabled, as it could be an attack.
2565                         $parsedNote = '';
2566                         if ( $this->textbox1 !== '' ) {
2567                                 // Do not put big scary notice, if previewing the empty
2568                                 // string, which happens when you initially edit
2569                                 // a category page, due to automatic preview-on-open.
2570                                 $parsedNote = $wgOut->parse( "<div class='previewnote'>" .
2571                                         wfMsg( 'session_fail_preview_html' ) . "</div>", true, /* interface */true );
2572                         }
2573                         wfProfileOut( __METHOD__ );
2574                         return $parsedNote;
2575                 }
2576
2577                 if ( $this->mTriedSave && !$this->mTokenOk ) {
2578                         if ( $this->mTokenOkExceptSuffix ) {
2579                                 $note = wfMsg( 'token_suffix_mismatch' );
2580                         } else {
2581                                 $note = wfMsg( 'session_fail_preview' );
2582                         }
2583                 } elseif ( $this->incompleteForm ) {
2584                         $note = wfMsg( 'edit_form_incomplete' );
2585                 } else {
2586                         $note = wfMsg( 'previewnote' ) .
2587                                 ' [[#' . self::EDITFORM_ID . '|' . $wgLang->getArrow() . ' ' . wfMsg( 'continue-editing' ) . ']]';
2588                 }
2589
2590                 $parserOptions = ParserOptions::newFromUser( $wgUser );
2591                 $parserOptions->setEditSection( false );
2592                 $parserOptions->setTidy( true );
2593                 $parserOptions->setIsPreview( true );
2594                 $parserOptions->setIsSectionPreview( !is_null( $this->section ) && $this->section !== '' );
2595
2596                 # don't parse non-wikitext pages, show message about preview
2597                 if ( $this->mTitle->isCssJsSubpage() || !$this->mTitle->isWikitextPage() ) {
2598                         if ( $this->mTitle->isCssJsSubpage() ) {
2599                                 $level = 'user';
2600                         } elseif ( $this->mTitle->isCssOrJsPage() ) {
2601                                 $level = 'site';
2602                         } else {
2603                                 $level = false;
2604                         }
2605
2606                         # Used messages to make sure grep find them:
2607                         # Messages: usercsspreview, userjspreview, sitecsspreview, sitejspreview
2608                         $class = 'mw-code';
2609                         if ( $level ) {
2610                                 if ( preg_match( "/\\.css$/", $this->mTitle->getText() ) ) {
2611                                         $previewtext = "<div id='mw-{$level}csspreview'>\n" . wfMsg( "{$level}csspreview" ) . "\n</div>";
2612                                         $class .= " mw-css";
2613                                 } elseif ( preg_match( "/\\.js$/", $this->mTitle->getText() ) ) {
2614                                         $previewtext = "<div id='mw-{$level}jspreview'>\n" . wfMsg( "{$level}jspreview" ) . "\n</div>";
2615                                         $class .= " mw-js";
2616                                 } else {
2617                                         throw new MWException( 'A CSS/JS (sub)page but which is not css nor js!' );
2618                                 }
2619                                 $parserOutput = $wgParser->parse( $previewtext, $this->mTitle, $parserOptions );
2620                                 $previewHTML = $parserOutput->getText();
2621                         } else {
2622                                 $previewHTML = '';
2623                         }
2624
2625                         $previewHTML .= "<pre class=\"$class\" dir=\"ltr\">\n" . htmlspecialchars( $this->textbox1 ) . "\n</pre>\n";
2626                 } else {
2627                         $toparse = $this->textbox1;
2628
2629                         # If we're adding a comment, we need to show the
2630                         # summary as the headline
2631                         if ( $this->section == "new" && $this->summary != "" ) {
2632                                 $toparse = wfMsgForContent( 'newsectionheaderdefaultlevel', $this->summary ) . "\n\n" . $toparse;
2633                         }
2634
2635                         wfRunHooks( 'EditPageGetPreviewText', array( $this, &$toparse ) );
2636
2637                         $parserOptions->enableLimitReport();
2638
2639                         $toparse = $wgParser->preSaveTransform( $toparse, $this->mTitle, $wgUser, $parserOptions );
2640                         $parserOutput = $wgParser->parse( $toparse, $this->mTitle, $parserOptions );
2641
2642                         $rt = Title::newFromRedirectArray( $this->textbox1 );
2643                         if ( $rt ) {
2644                                 $previewHTML = $this->mArticle->viewRedirect( $rt, false );
2645                         } else {
2646                                 $previewHTML = $parserOutput->getText();
2647                         }
2648
2649                         $this->mParserOutput = $parserOutput;
2650                         $wgOut->addParserOutputNoText( $parserOutput );
2651
2652                         if ( count( $parserOutput->getWarnings() ) ) {
2653                                 $note .= "\n\n" . implode( "\n\n", $parserOutput->getWarnings() );
2654                         }
2655                 }
2656
2657                 if ( $this->isConflict ) {
2658                         $conflict = '<h2 id="mw-previewconflict">' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
2659                 } else {
2660                         $conflict = '<hr />';
2661                 }
2662
2663                 $previewhead = "<div class='previewnote'>\n" .
2664                         '<h2 id="mw-previewheader">' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>" .
2665                         $wgOut->parse( $note, true, /* interface */true ) . $conflict . "</div>\n";
2666
2667                 $pageLang = $this->mTitle->getPageLanguage();
2668                 $attribs = array( 'lang' => $pageLang->getCode(), 'dir' => $pageLang->getDir(),
2669                         'class' => 'mw-content-' . $pageLang->getDir() );
2670                 $previewHTML = Html::rawElement( 'div', $attribs, $previewHTML );
2671
2672                 wfProfileOut( __METHOD__ );
2673                 return $previewhead . $previewHTML . $this->previewTextAfterContent;
2674         }
2675
2676         /**
2677          * @return Array
2678          */
2679         function getTemplates() {
2680                 if ( $this->preview || $this->section != '' ) {
2681                         $templates = array();
2682                         if ( !isset( $this->mParserOutput ) ) {
2683                                 return $templates;
2684                         }
2685                         foreach ( $this->mParserOutput->getTemplates() as $ns => $template ) {
2686                                 foreach ( array_keys( $template ) as $dbk ) {
2687                                         $templates[] = Title::makeTitle( $ns, $dbk );
2688                                 }
2689                         }
2690                         return $templates;
2691                 } else {
2692                         return $this->mTitle->getTemplateLinksFrom();
2693                 }
2694         }
2695
2696         /**
2697          * Shows a bulletin board style toolbar for common editing functions.
2698          * It can be disabled in the user preferences.
2699          * The necessary JavaScript code can be found in skins/common/edit.js.
2700          *
2701          * @return string
2702          */
2703         static function getEditToolbar() {
2704                 global $wgStylePath, $wgContLang, $wgLang, $wgOut;
2705                 global $wgUseTeX, $wgEnableUploads, $wgForeignFileRepos;
2706
2707                 $imagesAvailable = $wgEnableUploads || count( $wgForeignFileRepos );
2708
2709                 /**
2710                  * $toolarray is an array of arrays each of which includes the
2711                  * filename of the button image (without path), the opening
2712                  * tag, the closing tag, optionally a sample text that is
2713                  * inserted between the two when no selection is highlighted
2714                  * and.  The tip text is shown when the user moves the mouse
2715                  * over the button.
2716                  *
2717                  * Also here: accesskeys (key), which are not used yet until
2718                  * someone can figure out a way to make them work in
2719                  * IE. However, we should make sure these keys are not defined
2720                  * on the edit page.
2721                  */
2722                 $toolarray = array(
2723                         array(
2724                                 'image'  => $wgLang->getImageFile( 'button-bold' ),
2725                                 'id'     => 'mw-editbutton-bold',
2726                                 'open'   => '\'\'\'',
2727                                 'close'  => '\'\'\'',
2728                                 'sample' => wfMsg( 'bold_sample' ),
2729                                 'tip'    => wfMsg( 'bold_tip' ),
2730                                 'key'    => 'B'
2731                         ),
2732                         array(
2733                                 'image'  => $wgLang->getImageFile( 'button-italic' ),
2734                                 'id'     => 'mw-editbutton-italic',
2735                                 'open'   => '\'\'',
2736                                 'close'  => '\'\'',
2737                                 'sample' => wfMsg( 'italic_sample' ),
2738                                 'tip'    => wfMsg( 'italic_tip' ),
2739                                 'key'    => 'I'
2740                         ),
2741                         array(
2742                                 'image'  => $wgLang->getImageFile( 'button-link' ),
2743                                 'id'     => 'mw-editbutton-link',
2744                                 'open'   => '[[',
2745                                 'close'  => ']]',
2746                                 'sample' => wfMsg( 'link_sample' ),
2747                                 'tip'    => wfMsg( 'link_tip' ),
2748                                 'key'    => 'L'
2749                         ),
2750                         array(
2751                                 'image'  => $wgLang->getImageFile( 'button-extlink' ),
2752                                 'id'     => 'mw-editbutton-extlink',
2753                                 'open'   => '[',
2754                                 'close'  => ']',
2755                                 'sample' => wfMsg( 'extlink_sample' ),
2756                                 'tip'    => wfMsg( 'extlink_tip' ),
2757                                 'key'    => 'X'
2758                         ),
2759                         array(
2760                                 'image'  => $wgLang->getImageFile( 'button-headline' ),
2761                                 'id'     => 'mw-editbutton-headline',
2762                                 'open'   => "\n== ",
2763                                 'close'  => " ==\n",
2764                                 'sample' => wfMsg( 'headline_sample' ),
2765                                 'tip'    => wfMsg( 'headline_tip' ),
2766                                 'key'    => 'H'
2767                         ),
2768                         $imagesAvailable ? array(
2769                                 'image'  => $wgLang->getImageFile( 'button-image' ),
2770                                 'id'     => 'mw-editbutton-image',
2771                                 'open'   => '[[' . $wgContLang->getNsText( NS_FILE ) . ':',
2772                                 'close'  => ']]',
2773                                 'sample' => wfMsg( 'image_sample' ),
2774                                 'tip'    => wfMsg( 'image_tip' ),
2775                                 'key'    => 'D',
2776                         ) : false,
2777                         $imagesAvailable ? array(
2778                                 'image'  => $wgLang->getImageFile( 'button-media' ),
2779                                 'id'     => 'mw-editbutton-media',
2780                                 'open'   => '[[' . $wgContLang->getNsText( NS_MEDIA ) . ':',
2781                                 'close'  => ']]',
2782                                 'sample' => wfMsg( 'media_sample' ),
2783                                 'tip'    => wfMsg( 'media_tip' ),
2784                                 'key'    => 'M'
2785                         ) : false,
2786                         $wgUseTeX ? array(
2787                                 'image'  => $wgLang->getImageFile( 'button-math' ),
2788                                 'id'     => 'mw-editbutton-math',
2789                                 'open'   => "<math>",
2790                                 'close'  => "</math>",
2791                                 'sample' => wfMsg( 'math_sample' ),
2792                                 'tip'    => wfMsg( 'math_tip' ),
2793                                 'key'    => 'C'
2794                         ) : false,
2795                         array(
2796                                 'image'  => $wgLang->getImageFile( 'button-nowiki' ),
2797                                 'id'     => 'mw-editbutton-nowiki',
2798                                 'open'   => "<nowiki>",
2799                                 'close'  => "</nowiki>",
2800                                 'sample' => wfMsg( 'nowiki_sample' ),
2801                                 'tip'    => wfMsg( 'nowiki_tip' ),
2802                                 'key'    => 'N'
2803                         ),
2804                         array(
2805                                 'image'  => $wgLang->getImageFile( 'button-sig' ),
2806                                 'id'     => 'mw-editbutton-signature',
2807                                 'open'   => '--~~~~',
2808                                 'close'  => '',
2809                                 'sample' => '',
2810                                 'tip'    => wfMsg( 'sig_tip' ),
2811                                 'key'    => 'Y'
2812                         ),
2813                         array(
2814                                 'image'  => $wgLang->getImageFile( 'button-hr' ),
2815                                 'id'     => 'mw-editbutton-hr',
2816                                 'open'   => "\n----\n",
2817                                 'close'  => '',
2818                                 'sample' => '',
2819                                 'tip'    => wfMsg( 'hr_tip' ),
2820                                 'key'    => 'R'
2821                         )
2822                 );
2823
2824                 $script = 'mw.loader.using("mediawiki.action.edit", function() {';
2825                 foreach ( $toolarray as $tool ) {
2826                         if ( !$tool ) {
2827                                 continue;
2828                         }
2829
2830                         $params = array(
2831                                 $image = $wgStylePath . '/common/images/' . $tool['image'],
2832                                 // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
2833                                 // Older browsers show a "speedtip" type message only for ALT.
2834                                 // Ideally these should be different, realistically they
2835                                 // probably don't need to be.
2836                                 $tip = $tool['tip'],
2837                                 $open = $tool['open'],
2838                                 $close = $tool['close'],
2839                                 $sample = $tool['sample'],
2840                                 $cssId = $tool['id'],
2841                         );
2842
2843                         $script .= Xml::encodeJsCall( 'mw.toolbar.addButton', $params );
2844                 }
2845
2846                 // This used to be called on DOMReady from mediawiki.action.edit, which
2847                 // ended up causing race conditions with the setup code above.
2848                 $script .= "\n" .
2849                         "// Create button bar\n" .
2850                         "$(function() { mw.toolbar.init(); } );\n";
2851
2852                 $script .= '});';
2853                 $wgOut->addScript( Html::inlineScript( ResourceLoader::makeLoaderConditionalScript( $script ) ) );
2854
2855                 $toolbar = '<div id="toolbar"></div>';
2856
2857                 wfRunHooks( 'EditPageBeforeEditToolbar', array( &$toolbar ) );
2858
2859                 return $toolbar;
2860         }
2861
2862         /**
2863          * Returns an array of html code of the following checkboxes:
2864          * minor and watch
2865          *
2866          * @param $tabindex int Current tabindex
2867          * @param $checked Array of checkbox => bool, where bool indicates the checked
2868          *                 status of the checkbox
2869          *
2870          * @return array
2871          */
2872         public function getCheckboxes( &$tabindex, $checked ) {
2873                 global $wgUser;
2874
2875                 $checkboxes = array();
2876
2877                 // don't show the minor edit checkbox if it's a new page or section
2878                 if ( !$this->isNew ) {
2879                         $checkboxes['minor'] = '';
2880                         $minorLabel = wfMsgExt( 'minoredit', array( 'parseinline' ) );
2881                         if ( $wgUser->isAllowed( 'minoredit' ) ) {
2882                                 $attribs = array(
2883                                         'tabindex'  => ++$tabindex,
2884                                         'accesskey' => wfMsg( 'accesskey-minoredit' ),
2885                                         'id'        => 'wpMinoredit',
2886                                 );
2887                                 $checkboxes['minor'] =
2888                                         Xml::check( 'wpMinoredit', $checked['minor'], $attribs ) .
2889                                         "&#160;<label for='wpMinoredit' id='mw-editpage-minoredit'" .
2890                                         Xml::expandAttributes( array( 'title' => Linker::titleAttrib( 'minoredit', 'withaccess' ) ) ) .
2891                                         ">{$minorLabel}</label>";
2892                         }
2893                 }
2894
2895                 $watchLabel = wfMsgExt( 'watchthis', array( 'parseinline' ) );
2896                 $checkboxes['watch'] = '';
2897                 if ( $wgUser->isLoggedIn() ) {
2898                         $attribs = array(
2899                                 'tabindex'  => ++$tabindex,
2900                                 'accesskey' => wfMsg( 'accesskey-watch' ),
2901                                 'id'        => 'wpWatchthis',
2902                         );
2903                         $checkboxes['watch'] =
2904                                 Xml::check( 'wpWatchthis', $checked['watch'], $attribs ) .
2905                                 "&#160;<label for='wpWatchthis' id='mw-editpage-watch'" .
2906                                 Xml::expandAttributes( array( 'title' => Linker::titleAttrib( 'watch', 'withaccess' ) ) ) .
2907                                 ">{$watchLabel}</label>";
2908                 }
2909                 wfRunHooks( 'EditPageBeforeEditChecks', array( &$this, &$checkboxes, &$tabindex ) );
2910                 return $checkboxes;
2911         }
2912
2913         /**
2914          * Returns an array of html code of the following buttons:
2915          * save, diff, preview and live
2916          *
2917          * @param $tabindex int Current tabindex
2918          *
2919          * @return array
2920          */
2921         public function getEditButtons( &$tabindex ) {
2922                 $buttons = array();
2923
2924                 $temp = array(
2925                         'id'        => 'wpSave',
2926                         'name'      => 'wpSave',
2927                         'type'      => 'submit',
2928                         'tabindex'  => ++$tabindex,
2929                         'value'     => wfMsg( 'savearticle' ),
2930                         'accesskey' => wfMsg( 'accesskey-save' ),
2931                         'title'     => wfMsg( 'tooltip-save' ) . ' [' . wfMsg( 'accesskey-save' ) . ']',
2932                 );
2933                 $buttons['save'] = Xml::element( 'input', $temp, '' );
2934
2935                 ++$tabindex; // use the same for preview and live preview
2936                 $temp = array(
2937                         'id'        => 'wpPreview',
2938                         'name'      => 'wpPreview',
2939                         'type'      => 'submit',
2940                         'tabindex'  => $tabindex,
2941                         'value'     => wfMsg( 'showpreview' ),
2942                         'accesskey' => wfMsg( 'accesskey-preview' ),
2943                         'title'     => wfMsg( 'tooltip-preview' ) . ' [' . wfMsg( 'accesskey-preview' ) . ']',
2944                 );
2945                 $buttons['preview'] = Xml::element( 'input', $temp, '' );
2946                 $buttons['live'] = '';
2947
2948                 $temp = array(
2949                         'id'        => 'wpDiff',
2950                         'name'      => 'wpDiff',
2951                         'type'      => 'submit',
2952                         'tabindex'  => ++$tabindex,
2953                         'value'     => wfMsg( 'showdiff' ),
2954                         'accesskey' => wfMsg( 'accesskey-diff' ),
2955                         'title'     => wfMsg( 'tooltip-diff' ) . ' [' . wfMsg( 'accesskey-diff' ) . ']',
2956                 );
2957                 $buttons['diff'] = Xml::element( 'input', $temp, '' );
2958
2959                 wfRunHooks( 'EditPageBeforeEditButtons', array( &$this, &$buttons, &$tabindex ) );
2960                 return $buttons;
2961         }
2962
2963         /**
2964          * Output preview text only. This can be sucked into the edit page
2965          * via JavaScript, and saves the server time rendering the skin as
2966          * well as theoretically being more robust on the client (doesn't
2967          * disturb the edit box's undo history, won't eat your text on
2968          * failure, etc).
2969          *
2970          * @todo This doesn't include category or interlanguage links.
2971          *       Would need to enhance it a bit, <s>maybe wrap them in XML
2972          *       or something...</s> that might also require more skin
2973          *       initialization, so check whether that's a problem.
2974          */
2975         function livePreview() {
2976                 global $wgOut;
2977                 $wgOut->disable();
2978                 header( 'Content-type: text/xml; charset=utf-8' );
2979                 header( 'Cache-control: no-cache' );
2980
2981                 $previewText = $this->getPreviewText();
2982                 #$categories = $skin->getCategoryLinks();
2983
2984                 $s =
2985                 '<?xml version="1.0" encoding="UTF-8" ?>' . "\n" .
2986                 Xml::tags( 'livepreview', null,
2987                         Xml::element( 'preview', null, $previewText )
2988                         #.      Xml::element( 'category', null, $categories )
2989                 );
2990                 echo $s;
2991         }
2992
2993         /**
2994          * Call the stock "user is blocked" page
2995          *
2996          * @deprecated in 1.19; throw an exception directly instead
2997          */
2998         function blockedPage() {
2999                 wfDeprecated( __METHOD__, '1.19' );
3000                 global $wgUser;
3001
3002                 throw new UserBlockedError( $wgUser->getBlock() );
3003         }
3004
3005         /**
3006          * Produce the stock "please login to edit pages" page
3007          *
3008          * @deprecated in 1.19; throw an exception directly instead
3009          */
3010         function userNotLoggedInPage() {
3011                 wfDeprecated( __METHOD__, '1.19' );
3012                 throw new PermissionsError( 'edit' );
3013         }
3014
3015         /**
3016          * Show an error page saying to the user that he has insufficient permissions
3017          * to create a new page
3018          *
3019          * @deprecated in 1.19; throw an exception directly instead
3020          */
3021         function noCreatePermission() {
3022                 wfDeprecated( __METHOD__, '1.19' );
3023                 $permission = $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage';
3024                 throw new PermissionsError( $permission );
3025         }
3026
3027         /**
3028          * Creates a basic error page which informs the user that
3029          * they have attempted to edit a nonexistent section.
3030          */
3031         function noSuchSectionPage() {
3032                 global $wgOut;
3033
3034                 $wgOut->prepareErrorPage( wfMessage( 'nosuchsectiontitle' ) );
3035
3036                 $res = wfMsgExt( 'nosuchsectiontext', 'parse', $this->section );
3037                 wfRunHooks( 'EditPageNoSuchSection', array( &$this, &$res ) );
3038                 $wgOut->addHTML( $res );
3039
3040                 $wgOut->returnToMain( false, $this->mTitle );
3041         }
3042
3043         /**
3044          * Produce the stock "your edit contains spam" page
3045          *
3046          * @param $match string Text which triggered one or more filters
3047          * @deprecated since 1.17 Use method spamPageWithContent() instead
3048          */
3049         static function spamPage( $match = false ) {
3050                 wfDeprecated( __METHOD__, '1.17' );
3051
3052                 global $wgOut, $wgTitle;
3053
3054                 $wgOut->prepareErrorPage( wfMessage( 'spamprotectiontitle' ) );
3055
3056                 $wgOut->addHTML( '<div id="spamprotected">' );
3057                 $wgOut->addWikiMsg( 'spamprotectiontext' );
3058                 if ( $match ) {
3059                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
3060                 }
3061                 $wgOut->addHTML( '</div>' );
3062
3063                 $wgOut->returnToMain( false, $wgTitle );
3064         }
3065
3066         /**
3067          * Show "your edit contains spam" page with your diff and text
3068          *
3069          * @param $match string|Array|bool Text (or array of texts) which triggered one or more filters
3070          */
3071         public function spamPageWithContent( $match = false ) {
3072                 global $wgOut, $wgLang;
3073                 $this->textbox2 = $this->textbox1;
3074
3075                 if( is_array( $match ) ){
3076                         $match = $wgLang->listToText( $match );
3077                 }
3078                 $wgOut->prepareErrorPage( wfMessage( 'spamprotectiontitle' ) );
3079
3080                 $wgOut->addHTML( '<div id="spamprotected">' );
3081                 $wgOut->addWikiMsg( 'spamprotectiontext' );
3082                 if ( $match ) {
3083                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
3084                 }
3085                 $wgOut->addHTML( '</div>' );
3086
3087                 $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
3088                 $this->showDiff();
3089
3090                 $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
3091                 $this->showTextbox2();
3092
3093                 $wgOut->addReturnTo( $this->getContextTitle(), array( 'action' => 'edit' ) );
3094         }
3095
3096         /**
3097          * Format an anchor fragment as it would appear for a given section name
3098          * @param $text String
3099          * @return String
3100          * @private
3101          */
3102         function sectionAnchor( $text ) {
3103                 global $wgParser;
3104                 return $wgParser->guessSectionNameFromWikiText( $text );
3105         }
3106
3107         /**
3108          * Check if the browser is on a blacklist of user-agents known to
3109          * mangle UTF-8 data on form submission. Returns true if Unicode
3110          * should make it through, false if it's known to be a problem.
3111          * @return bool
3112          * @private
3113          */
3114         function checkUnicodeCompliantBrowser() {
3115                 global $wgBrowserBlackList;
3116                 if ( empty( $_SERVER["HTTP_USER_AGENT"] ) ) {
3117                         // No User-Agent header sent? Trust it by default...
3118                         return true;
3119                 }
3120                 $currentbrowser = $_SERVER["HTTP_USER_AGENT"];
3121                 foreach ( $wgBrowserBlackList as $browser ) {
3122                         if ( preg_match( $browser, $currentbrowser ) ) {
3123                                 return false;
3124                         }
3125                 }
3126                 return true;
3127         }
3128
3129         /**
3130          * Filter an input field through a Unicode de-armoring process if it
3131          * came from an old browser with known broken Unicode editing issues.
3132          *
3133          * @param $request WebRequest
3134          * @param $field String
3135          * @return String
3136          * @private
3137          */
3138         function safeUnicodeInput( $request, $field ) {
3139                 $text = rtrim( $request->getText( $field ) );
3140                 return $request->getBool( 'safemode' )
3141                         ? $this->unmakesafe( $text )
3142                         : $text;
3143         }
3144
3145         /**
3146          * @param $request WebRequest
3147          * @param $text string
3148          * @return string
3149          */
3150         function safeUnicodeText( $request, $text ) {
3151                 $text = rtrim( $text );
3152                 return $request->getBool( 'safemode' )
3153                         ? $this->unmakesafe( $text )
3154                         : $text;
3155         }
3156
3157         /**
3158          * Filter an output field through a Unicode armoring process if it is
3159          * going to an old browser with known broken Unicode editing issues.
3160          *
3161          * @param $text String
3162          * @return String
3163          * @private
3164          */
3165         function safeUnicodeOutput( $text ) {
3166                 global $wgContLang;
3167                 $codedText = $wgContLang->recodeForEdit( $text );
3168                 return $this->checkUnicodeCompliantBrowser()
3169                         ? $codedText
3170                         : $this->makesafe( $codedText );
3171         }
3172
3173         /**
3174          * A number of web browsers are known to corrupt non-ASCII characters
3175          * in a UTF-8 text editing environment. To protect against this,
3176          * detected browsers will be served an armored version of the text,
3177          * with non-ASCII chars converted to numeric HTML character references.
3178          *
3179          * Preexisting such character references will have a 0 added to them
3180          * to ensure that round-trips do not alter the original data.
3181          *
3182          * @param $invalue String
3183          * @return String
3184          * @private
3185          */
3186         function makesafe( $invalue ) {
3187                 // Armor existing references for reversability.
3188                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
3189
3190                 $bytesleft = 0;
3191                 $result = "";
3192                 $working = 0;
3193                 for ( $i = 0; $i < strlen( $invalue ); $i++ ) {
3194                         $bytevalue = ord( $invalue[$i] );
3195                         if ( $bytevalue <= 0x7F ) { // 0xxx xxxx
3196                                 $result .= chr( $bytevalue );
3197                                 $bytesleft = 0;
3198                         } elseif ( $bytevalue <= 0xBF ) { // 10xx xxxx
3199                                 $working = $working << 6;
3200                                 $working += ( $bytevalue & 0x3F );
3201                                 $bytesleft--;
3202                                 if ( $bytesleft <= 0 ) {
3203                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
3204                                 }
3205                         } elseif ( $bytevalue <= 0xDF ) { // 110x xxxx
3206                                 $working = $bytevalue & 0x1F;
3207                                 $bytesleft = 1;
3208                         } elseif ( $bytevalue <= 0xEF ) { // 1110 xxxx
3209                                 $working = $bytevalue & 0x0F;
3210                                 $bytesleft = 2;
3211                         } else { // 1111 0xxx
3212                                 $working = $bytevalue & 0x07;
3213                                 $bytesleft = 3;
3214                         }
3215                 }
3216                 return $result;
3217         }
3218
3219         /**
3220          * Reverse the previously applied transliteration of non-ASCII characters
3221          * back to UTF-8. Used to protect data from corruption by broken web browsers
3222          * as listed in $wgBrowserBlackList.
3223          *
3224          * @param $invalue String
3225          * @return String
3226          * @private
3227          */
3228         function unmakesafe( $invalue ) {
3229                 $result = "";
3230                 for ( $i = 0; $i < strlen( $invalue ); $i++ ) {
3231                         if ( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue[$i + 3] != '0' ) ) {
3232                                 $i += 3;
3233                                 $hexstring = "";
3234                                 do {
3235                                         $hexstring .= $invalue[$i];
3236                                         $i++;
3237                                 } while ( ctype_xdigit( $invalue[$i] ) && ( $i < strlen( $invalue ) ) );
3238
3239                                 // Do some sanity checks. These aren't needed for reversability,
3240                                 // but should help keep the breakage down if the editor
3241                                 // breaks one of the entities whilst editing.
3242                                 if ( ( substr( $invalue, $i, 1 ) == ";" ) and ( strlen( $hexstring ) <= 6 ) ) {
3243                                         $codepoint = hexdec( $hexstring );
3244                                         $result .= codepointToUtf8( $codepoint );
3245                                 } else {
3246                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
3247                                 }
3248                         } else {
3249                                 $result .= substr( $invalue, $i, 1 );
3250                         }
3251                 }
3252                 // reverse the transform that we made for reversability reasons.
3253                 return strtr( $result, array( "&#x0" => "&#x" ) );
3254         }
3255 }