includes/EditPage.php

   1 <?php
   2 /**
   3  * Page edition user interface.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  */
  22
  23 /**
  24  * The edit page/HTML interface (split from Article)
  25  * The actual database and text munging is still in Article,
  26  * but it should get easier to call those from alternate
  27  * interfaces.
  28  *
  29  * EditPage cares about two distinct titles:
  30  * $this->mContextTitle is the page that forms submit to, links point to,
  31  * redirects go to, etc. $this->mTitle (as well as $mArticle) is the
  32  * page in the database that is actually being edited. These are
  33  * usually the same, but they are now allowed to be different.
  34  *
  35  * Surgeon General's Warning: prolonged exposure to this class is known to cause
  36  * headaches, which may be fatal.
  37  */
  38 class EditPage {
  39
  40         /**
  41          * Status: Article successfully updated
  42          */
  43         const AS_SUCCESS_UPDATE            = 200;
  44
  45         /**
  46          * Status: Article successfully created
  47          */
  48         const AS_SUCCESS_NEW_ARTICLE       = 201;
  49
  50         /**
  51          * Status: Article update aborted by a hook function
  52          */
  53         const AS_HOOK_ERROR                = 210;
  54
  55         /**
  56          * Status: A hook function returned an error
  57          */
  58         const AS_HOOK_ERROR_EXPECTED       = 212;
  59
  60         /**
  61          * Status: User is blocked from editting this page
  62          */
  63         const AS_BLOCKED_PAGE_FOR_USER     = 215;
  64
  65         /**
  66          * Status: Content too big (> $wgMaxArticleSize)
  67          */
  68         const AS_CONTENT_TOO_BIG           = 216;
  69
  70         /**
  71          * Status: User cannot edit? (not used)
  72          */
  73         const AS_USER_CANNOT_EDIT          = 217;
  74
  75         /**
  76          * Status: this anonymous user is not allowed to edit this page
  77          */
  78         const AS_READ_ONLY_PAGE_ANON       = 218;
  79
  80         /**
  81          * Status: this logged in user is not allowed to edit this page
  82          */
  83         const AS_READ_ONLY_PAGE_LOGGED     = 219;
  84
  85         /**
  86          * Status: wiki is in readonly mode (wfReadOnly() == true)
  87          */
  88         const AS_READ_ONLY_PAGE            = 220;
  89
  90         /**
  91          * Status: rate limiter for action 'edit' was tripped
  92          */
  93         const AS_RATE_LIMITED              = 221;
  94
  95         /**
  96          * Status: article was deleted while editting and param wpRecreate == false or form
  97          * was not posted
  98          */
  99         const AS_ARTICLE_WAS_DELETED       = 222;
 100
 101         /**
 102          * Status: user tried to create this page, but is not allowed to do that
 103          * ( Title->usercan('create') == false )
 104          */
 105         const AS_NO_CREATE_PERMISSION      = 223;
 106
 107         /**
 108          * Status: user tried to create a blank page
 109          */
 110         const AS_BLANK_ARTICLE             = 224;
 111
 112         /**
 113          * Status: (non-resolvable) edit conflict
 114          */
 115         const AS_CONFLICT_DETECTED         = 225;
 116
 117         /**
 118          * Status: no edit summary given and the user has forceeditsummary set and the user is not
 119          * editting in his own userspace or talkspace and wpIgnoreBlankSummary == false
 120          */
 121         const AS_SUMMARY_NEEDED            = 226;
 122
 123         /**
 124          * Status: user tried to create a new section without content
 125          */
 126         const AS_TEXTBOX_EMPTY             = 228;
 127
 128         /**
 129          * Status: article is too big (> $wgMaxArticleSize), after merging in the new section
 130          */
 131         const AS_MAX_ARTICLE_SIZE_EXCEEDED = 229;
 132
 133         /**
 134          * not used
 135          */
 136         const AS_OK                        = 230;
 137
 138         /**
 139          * Status: WikiPage::doEdit() was unsuccessfull
 140          */
 141         const AS_END                       = 231;
 142
 143         /**
 144          * Status: summary contained spam according to one of the regexes in $wgSummarySpamRegex
 145          */
 146         const AS_SPAM_ERROR                = 232;
 147
 148         /**
 149          * Status: anonymous user is not allowed to upload (User::isAllowed('upload') == false)
 150          */
 151         const AS_IMAGE_REDIRECT_ANON       = 233;
 152
 153         /**
 154          * Status: logged in user is not allowed to upload (User::isAllowed('upload') == false)
 155          */
 156         const AS_IMAGE_REDIRECT_LOGGED     = 234;
 157
 158         /**
 159          * HTML id and name for the beginning of the edit form.
 160          */
 161         const EDITFORM_ID                  = 'editform';
 162
 163         /**
 164          * @var Article
 165          */
 166         var $mArticle;
 167
 168         /**
 169          * @var Title
 170          */
 171         var $mTitle;
 172         private $mContextTitle = null;
 173         var $action = 'submit';
 174         var $isConflict = false;
 175         var $isCssJsSubpage = false;
 176         var $isCssSubpage = false;
 177         var $isJsSubpage = false;
 178         var $isWrongCaseCssJsPage = false;
 179         var $isNew = false; // new page or new section
 180         var $deletedSinceEdit;
 181         var $formtype;
 182         var $firsttime;
 183         var $lastDelete;
 184         var $mTokenOk = false;
 185         var $mTokenOkExceptSuffix = false;
 186         var $mTriedSave = false;
 187         var $incompleteForm = false;
 188         var $tooBig = false;
 189         var $kblength = false;
 190         var $missingComment = false;
 191         var $missingSummary = false;
 192         var $allowBlankSummary = false;
 193         var $autoSumm = '';
 194         var $hookError = '';
 195         #var $mPreviewTemplates;
 196
 197         /**
 198          * @var ParserOutput
 199          */
 200         var $mParserOutput;
 201
 202         /**
 203          * Has a summary been preset using GET parameter &summary= ?
 204          * @var Bool
 205          */
 206         var $hasPresetSummary = false;
 207
 208         var $mBaseRevision = false;
 209         var $mShowSummaryField = true;
 210
 211         # Form values
 212         var $save = false, $preview = false, $diff = false;
 213         var $minoredit = false, $watchthis = false, $recreate = false;
 214         var $textbox1 = '', $textbox2 = '', $summary = '', $nosummary = false;
 215         var $edittime = '', $section = '', $sectiontitle = '', $starttime = '';
 216         var $oldid = 0, $editintro = '', $scrolltop = null, $bot = true;
 217
 218         # Placeholders for text injection by hooks (must be HTML)
 219         # extensions should take care to _append_ to the present value
 220         public $editFormPageTop = ''; // Before even the preview
 221         public $editFormTextTop = '';
 222         public $editFormTextBeforeContent = '';
 223         public $editFormTextAfterWarn = '';
 224         public $editFormTextAfterTools = '';
 225         public $editFormTextBottom = '';
 226         public $editFormTextAfterContent = '';
 227         public $previewTextAfterContent = '';
 228         public $mPreloadText = '';
 229
 230         /* $didSave should be set to true whenever an article was succesfully altered. */
 231         public $didSave = false;
 232         public $undidRev = 0;
 233
 234         public $suppressIntro = false;
 235
 236         /**
 237          * @param $article Article
 238          */
 239         public function __construct( Article $article ) {
 240                 $this->mArticle = $article;
 241                 $this->mTitle = $article->getTitle();
 242         }
 243
 244         /**
 245          * @return Article
 246          */
 247         public function getArticle() {
 248                 return $this->mArticle;
 249         }
 250
 251         /**
 252          * @since 1.19
 253          * @return Title
 254          */
 255         public function getTitle() {
 256                 return $this->mTitle;
 257         }
 258
 259         /**
 260          * Set the context Title object
 261          *
 262          * @param $title Title object or null
 263          */
 264         public function setContextTitle( $title ) {
 265                 $this->mContextTitle = $title;
 266         }
 267
 268         /**
 269          * Get the context title object.
 270          * If not set, $wgTitle will be returned. This behavior might changed in
 271          * the future to return $this->mTitle instead.
 272          *
 273          * @return Title object
 274          */
 275         public function getContextTitle() {
 276                 if ( is_null( $this->mContextTitle ) ) {
 277                         global $wgTitle;
 278                         return $wgTitle;
 279                 } else {
 280                         return $this->mContextTitle;
 281                 }
 282         }
 283
 284         function submit() {
 285                 $this->edit();
 286         }
 287
 288         /**
 289          * This is the function that gets called for "action=edit". It
 290          * sets up various member variables, then passes execution to
 291          * another function, usually showEditForm()
 292          *
 293          * The edit form is self-submitting, so that when things like
 294          * preview and edit conflicts occur, we get the same form back
 295          * with the extra stuff added.  Only when the final submission
 296          * is made and all is well do we actually save and redirect to
 297          * the newly-edited page.
 298          */
 299         function edit() {
 300                 global $wgOut, $wgRequest, $wgUser;
 301                 // Allow extensions to modify/prevent this form or submission
 302                 if ( !wfRunHooks( 'AlternateEdit', array( $this ) ) ) {
 303                         return;
 304                 }
 305
 306                 wfProfileIn( __METHOD__ );
 307                 wfDebug( __METHOD__ . ": enter\n" );
 308
 309                 // If they used redlink=1 and the page exists, redirect to the main article
 310                 if ( $wgRequest->getBool( 'redlink' ) && $this->mTitle->exists() ) {
 311                         $wgOut->redirect( $this->mTitle->getFullURL() );
 312                         wfProfileOut( __METHOD__ );
 313                         return;
 314                 }
 315
 316                 $this->importFormData( $wgRequest );
 317                 $this->firsttime = false;
 318
 319                 if ( $this->live ) {
 320                         $this->livePreview();
 321                         wfProfileOut( __METHOD__ );
 322                         return;
 323                 }
 324
 325                 if ( wfReadOnly() && $this->save ) {
 326                         // Force preview
 327                         $this->save = false;
 328                         $this->preview = true;
 329                 }
 330
 331                 if ( $this->save ) {
 332                         $this->formtype = 'save';
 333                 } elseif ( $this->preview ) {
 334                         $this->formtype = 'preview';
 335                 } elseif ( $this->diff ) {
 336                         $this->formtype = 'diff';
 337                 } else { # First time through
 338                         $this->firsttime = true;
 339                         if ( $this->previewOnOpen() ) {
 340                                 $this->formtype = 'preview';
 341                         } else {
 342                                 $this->formtype = 'initial';
 343                         }
 344                 }
 345
 346                 $permErrors = $this->getEditPermissionErrors();
 347                 if ( $permErrors ) {
 348                         wfDebug( __METHOD__ . ": User can't edit\n" );
 349                         // Auto-block user's IP if the account was "hard" blocked
 350                         $wgUser->spreadAnyEditBlock();
 351
 352                         $this->displayPermissionsError( $permErrors );
 353
 354                         wfProfileOut( __METHOD__ );
 355                         return;
 356                 }
 357
 358                 wfProfileIn( __METHOD__ . "-business-end" );
 359
 360                 $this->isConflict = false;
 361                 // css / js subpages of user pages get a special treatment
 362                 $this->isCssJsSubpage       = $this->mTitle->isCssJsSubpage();
 363                 $this->isCssSubpage         = $this->mTitle->isCssSubpage();
 364                 $this->isJsSubpage          = $this->mTitle->isJsSubpage();
 365                 $this->isWrongCaseCssJsPage = $this->isWrongCaseCssJsPage();
 366                 $this->isNew                = !$this->mTitle->exists() || $this->section == 'new';
 367
 368                 # Show applicable editing introductions
 369                 if ( $this->formtype == 'initial' || $this->firsttime ) {
 370                         $this->showIntro();
 371                 }
 372
 373                 # Attempt submission here.  This will check for edit conflicts,
 374                 # and redundantly check for locked database, blocked IPs, etc.
 375                 # that edit() already checked just in case someone tries to sneak
 376                 # in the back door with a hand-edited submission URL.
 377
 378                 if ( 'save' == $this->formtype ) {
 379                         if ( !$this->attemptSave() ) {
 380                                 wfProfileOut( __METHOD__ . "-business-end" );
 381                                 wfProfileOut( __METHOD__ );
 382                                 return;
 383                         }
 384                 }
 385
 386                 # First time through: get contents, set time for conflict
 387                 # checking, etc.
 388                 if ( 'initial' == $this->formtype || $this->firsttime ) {
 389                         if ( $this->initialiseForm() === false ) {
 390                                 $this->noSuchSectionPage();
 391                                 wfProfileOut( __METHOD__ . "-business-end" );
 392                                 wfProfileOut( __METHOD__ );
 393                                 return;
 394                         }
 395                         if ( !$this->mTitle->getArticleID() )
 396                                 wfRunHooks( 'EditFormPreloadText', array( &$this->textbox1, &$this->mTitle ) );
 397                         else
 398                                 wfRunHooks( 'EditFormInitialText', array( $this ) );
 399                 }
 400
 401                 $this->showEditForm();
 402                 wfProfileOut( __METHOD__ . "-business-end" );
 403                 wfProfileOut( __METHOD__ );
 404         }
 405
 406         /**
 407          * @return array
 408          */
 409         protected function getEditPermissionErrors() {
 410                 global $wgUser;
 411                 $permErrors = $this->mTitle->getUserPermissionsErrors( 'edit', $wgUser );
 412                 # Can this title be created?
 413                 if ( !$this->mTitle->exists() ) {
 414                         $permErrors = array_merge( $permErrors,
 415                                 wfArrayDiff2( $this->mTitle->getUserPermissionsErrors( 'create', $wgUser ), $permErrors ) );
 416                 }
 417                 # Ignore some permissions errors when a user is just previewing/viewing diffs
 418                 $remove = array();
 419                 foreach ( $permErrors as $error ) {
 420                         if ( ( $this->preview || $this->diff ) &&
 421                                 ( $error[0] == 'blockedtext' || $error[0] == 'autoblockedtext' ) )
 422                         {
 423                                 $remove[] = $error;
 424                         }
 425                 }
 426                 $permErrors = wfArrayDiff2( $permErrors, $remove );
 427                 return $permErrors;
 428         }
 429
 430         /**
 431          * Display a permissions error page, like OutputPage::showPermissionsErrorPage(),
 432          * but with the following differences:
 433          * - If redlink=1, the user will be redirected to the page
 434          * - If there is content to display or the error occurs while either saving,
 435          *   previewing or showing the difference, it will be a
 436          *   "View source for ..." page displaying the source code after the error message.
 437          *
 438          * @since 1.19
 439          * @param $permErrors Array of permissions errors, as returned by
 440          *                    Title::getUserPermissionsErrors().
 441          */
 442         protected function displayPermissionsError( array $permErrors ) {
 443                 global $wgRequest, $wgOut;
 444
 445                 if ( $wgRequest->getBool( 'redlink' ) ) {
 446                         // The edit page was reached via a red link.
 447                         // Redirect to the article page and let them click the edit tab if
 448                         // they really want a permission error.
 449                         $wgOut->redirect( $this->mTitle->getFullUrl() );
 450                         return;
 451                 }
 452
 453                 $content = $this->getContent();
 454
 455                 # Use the normal message if there's nothing to display
 456                 if ( $this->firsttime && $content === '' ) {
 457                         $action = $this->mTitle->exists() ? 'edit' :
 458                                 ( $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage' );
 459                         throw new PermissionsError( $action, $permErrors );
 460                 }
 461
 462                 $wgOut->setPageTitle( wfMessage( 'viewsource-title', $this->getContextTitle()->getPrefixedText() ) );
 463                 $wgOut->addBacklinkSubtitle( $this->getContextTitle() );
 464                 $wgOut->addWikiText( $wgOut->formatPermissionsErrorMessage( $permErrors, 'edit' ) );
 465                 $wgOut->addHTML( "<hr />\n" );
 466
 467                 # If the user made changes, preserve them when showing the markup
 468                 # (This happens when a user is blocked during edit, for instance)
 469                 if ( !$this->firsttime ) {
 470                         $content = $this->textbox1;
 471                         $wgOut->addWikiMsg( 'viewyourtext' );
 472                 } else {
 473                         $wgOut->addWikiMsg( 'viewsourcetext' );
 474                 }
 475
 476                 $this->showTextbox( $content, 'wpTextbox1', array( 'readonly' ) );
 477
 478                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'templatesUsed' ),
 479                         Linker::formatTemplates( $this->getTemplates() ) ) );
 480
 481                 if ( $this->mTitle->exists() ) {
 482                         $wgOut->returnToMain( null, $this->mTitle );
 483                 }
 484         }
 485
 486         /**
 487          * Show a read-only error
 488          * Parameters are the same as OutputPage:readOnlyPage()
 489          * Redirect to the article page if redlink=1
 490          * @deprecated in 1.19; use displayPermissionsError() instead
 491          */
 492         function readOnlyPage( $source = null, $protected = false, $reasons = array(), $action = null ) {
 493                 wfDeprecated( __METHOD__, '1.19' );
 494
 495                 global $wgRequest, $wgOut;
 496                 if ( $wgRequest->getBool( 'redlink' ) ) {
 497                         // The edit page was reached via a red link.
 498                         // Redirect to the article page and let them click the edit tab if
 499                         // they really want a permission error.
 500                         $wgOut->redirect( $this->mTitle->getFullUrl() );
 501                 } else {
 502                         $wgOut->readOnlyPage( $source, $protected, $reasons, $action );
 503                 }
 504         }
 505
 506         /**
 507          * Should we show a preview when the edit form is first shown?
 508          *
 509          * @return bool
 510          */
 511         protected function previewOnOpen() {
 512                 global $wgRequest, $wgUser, $wgPreviewOnOpenNamespaces;
 513                 if ( $wgRequest->getVal( 'preview' ) == 'yes' ) {
 514                         // Explicit override from request
 515                         return true;
 516                 } elseif ( $wgRequest->getVal( 'preview' ) == 'no' ) {
 517                         // Explicit override from request
 518                         return false;
 519                 } elseif ( $this->section == 'new' ) {
 520                         // Nothing *to* preview for new sections
 521                         return false;
 522                 } elseif ( ( $wgRequest->getVal( 'preload' ) !== null || $this->mTitle->exists() ) && $wgUser->getOption( 'previewonfirst' ) ) {
 523                         // Standard preference behaviour
 524                         return true;
 525                 } elseif ( !$this->mTitle->exists() &&
 526                   isset( $wgPreviewOnOpenNamespaces[$this->mTitle->getNamespace()] ) &&
 527                   $wgPreviewOnOpenNamespaces[$this->mTitle->getNamespace()] )
 528                 {
 529                         // Categories are special
 530                         return true;
 531                 } else {
 532                         return false;
 533                 }
 534         }
 535
 536         /**
 537          * Checks whether the user entered a skin name in uppercase,
 538          * e.g. "User:Example/Monobook.css" instead of "monobook.css"
 539          *
 540          * @return bool
 541          */
 542         protected function isWrongCaseCssJsPage() {
 543                 if ( $this->mTitle->isCssJsSubpage() ) {
 544                         $name = $this->mTitle->getSkinFromCssJsSubpage();
 545                         $skins = array_merge(
 546                                 array_keys( Skin::getSkinNames() ),
 547                                 array( 'common' )
 548                         );
 549                         return !in_array( $name, $skins )
 550                                 && in_array( strtolower( $name ), $skins );
 551                 } else {
 552                         return false;
 553                 }
 554         }
 555
 556         /**
 557          * Does this EditPage class support section editing?
 558          * This is used by EditPage subclasses to indicate their ui cannot handle section edits
 559          *
 560          * @return bool
 561          */
 562         protected function isSectionEditSupported() {
 563                 return true;
 564         }
 565
 566         /**
 567          * This function collects the form data and uses it to populate various member variables.
 568          * @param $request WebRequest
 569          */
 570         function importFormData( &$request ) {
 571                 global $wgLang, $wgUser;
 572
 573                 wfProfileIn( __METHOD__ );
 574
 575                 # Section edit can come from either the form or a link
 576                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 577
 578                 if ( $request->wasPosted() ) {
 579                         # These fields need to be checked for encoding.
 580                         # Also remove trailing whitespace, but don't remove _initial_
 581                         # whitespace from the text boxes. This may be significant formatting.
 582                         $this->textbox1 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
 583                         if ( !$request->getCheck( 'wpTextbox2' ) ) {
 584                                 // Skip this if wpTextbox2 has input, it indicates that we came
 585                                 // from a conflict page with raw page text, not a custom form
 586                                 // modified by subclasses
 587                                 wfProfileIn( get_class( $this ) . "::importContentFormData" );
 588                                 $textbox1 = $this->importContentFormData( $request );
 589                                 if ( isset( $textbox1 ) )
 590                                         $this->textbox1 = $textbox1;
 591                                 wfProfileOut( get_class( $this ) . "::importContentFormData" );
 592                         }
 593
 594                         # Truncate for whole multibyte characters
 595                         $this->summary = $wgLang->truncate( $request->getText( 'wpSummary' ), 255 );
 596
 597                         # If the summary consists of a heading, e.g. '==Foobar==', extract the title from the
 598                         # header syntax, e.g. 'Foobar'. This is mainly an issue when we are using wpSummary for
 599                         # section titles.
 600                         $this->summary = preg_replace( '/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->summary );
 601
 602                         # Treat sectiontitle the same way as summary.
 603                         # Note that wpSectionTitle is not yet a part of the actual edit form, as wpSummary is
 604                         # currently doing double duty as both edit summary and section title. Right now this
 605                         # is just to allow API edits to work around this limitation, but this should be
 606                         # incorporated into the actual edit form when EditPage is rewritten (Bugs 18654, 26312).
 607                         $this->sectiontitle = $wgLang->truncate( $request->getText( 'wpSectionTitle' ), 255 );
 608                         $this->sectiontitle = preg_replace( '/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->sectiontitle );
 609
 610                         $this->edittime = $request->getVal( 'wpEdittime' );
 611                         $this->starttime = $request->getVal( 'wpStarttime' );
 612
 613                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 614
 615                         if ( $this->textbox1 === '' && $request->getVal( 'wpTextbox1' ) === null ) {
 616                                 // wpTextbox1 field is missing, possibly due to being "too big"
 617                                 // according to some filter rules such as Suhosin's setting for
 618                                 // suhosin.request.max_value_length (d'oh)
 619                                 $this->incompleteForm = true;
 620                         } else {
 621                                 // edittime should be one of our last fields; if it's missing,
 622                                 // the submission probably broke somewhere in the middle.
 623                                 $this->incompleteForm = is_null( $this->edittime );
 624                         }
 625                         if ( $this->incompleteForm ) {
 626                                 # If the form is incomplete, force to preview.
 627                                 wfDebug( __METHOD__ . ": Form data appears to be incomplete\n" );
 628                                 wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
 629                                 $this->preview = true;
 630                         } else {
 631                                 /* Fallback for live preview */
 632                                 $this->preview = $request->getCheck( 'wpPreview' ) || $request->getCheck( 'wpLivePreview' );
 633                                 $this->diff = $request->getCheck( 'wpDiff' );
 634
 635                                 // Remember whether a save was requested, so we can indicate
 636                                 // if we forced preview due to session failure.
 637                                 $this->mTriedSave = !$this->preview;
 638
 639                                 if ( $this->tokenOk( $request ) ) {
 640                                         # Some browsers will not report any submit button
 641                                         # if the user hits enter in the comment box.
 642                                         # The unmarked state will be assumed to be a save,
 643                                         # if the form seems otherwise complete.
 644                                         wfDebug( __METHOD__ . ": Passed token check.\n" );
 645                                 } elseif ( $this->diff ) {
 646                                         # Failed token check, but only requested "Show Changes".
 647                                         wfDebug( __METHOD__ . ": Failed token check; Show Changes requested.\n" );
 648                                 } else {
 649                                         # Page might be a hack attempt posted from
 650                                         # an external site. Preview instead of saving.
 651                                         wfDebug( __METHOD__ . ": Failed token check; forcing preview\n" );
 652                                         $this->preview = true;
 653                                 }
 654                         }
 655                         $this->save = !$this->preview && !$this->diff;
 656                         if ( !preg_match( '/^\d{14}$/', $this->edittime ) ) {
 657                                 $this->edittime = null;
 658                         }
 659
 660                         if ( !preg_match( '/^\d{14}$/', $this->starttime ) ) {
 661                                 $this->starttime = null;
 662                         }
 663
 664                         $this->recreate  = $request->getCheck( 'wpRecreate' );
 665
 666                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 667                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 668
 669                         # Don't force edit summaries when a user is editing their own user or talk page
 670                         if ( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK ) &&
 671                                 $this->mTitle->getText() == $wgUser->getName() )
 672                         {
 673                                 $this->allowBlankSummary = true;
 674                         } else {
 675                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' ) || !$wgUser->getOption( 'forceeditsummary' );
 676                         }
 677
 678                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
 679                 } else {
 680                         # Not a posted form? Start with nothing.
 681                         wfDebug( __METHOD__ . ": Not a posted form.\n" );
 682                         $this->textbox1     = '';
 683                         $this->summary      = '';
 684                         $this->sectiontitle = '';
 685                         $this->edittime     = '';
 686                         $this->starttime    = wfTimestampNow();
 687                         $this->edit         = false;
 688                         $this->preview      = false;
 689                         $this->save         = false;
 690                         $this->diff         = false;
 691                         $this->minoredit    = false;
 692                         $this->watchthis    = $request->getBool( 'watchthis', false ); // Watch may be overriden by request parameters
 693                         $this->recreate     = false;
 694
 695                         // When creating a new section, we can preload a section title by passing it as the
 696                         // preloadtitle parameter in the URL (Bug 13100)
 697                         if ( $this->section == 'new' && $request->getVal( 'preloadtitle' ) ) {
 698                                 $this->sectiontitle = $request->getVal( 'preloadtitle' );
 699                                 // Once wpSummary isn't being use for setting section titles, we should delete this.
 700                                 $this->summary = $request->getVal( 'preloadtitle' );
 701                         }
 702                         elseif ( $this->section != 'new' && $request->getVal( 'summary' ) ) {
 703                                 $this->summary = $request->getText( 'summary' );
 704                                 if ( $this->summary !== '' ) {
 705                                         $this->hasPresetSummary = true;
 706                                 }
 707                         }
 708
 709                         if ( $request->getVal( 'minor' ) ) {
 710                                 $this->minoredit = true;
 711                         }
 712                 }
 713
 714                 $this->bot = $request->getBool( 'bot', true );
 715                 $this->nosummary = $request->getBool( 'nosummary' );
 716
 717                 $this->oldid = $request->getInt( 'oldid' );
 718
 719                 $this->live = $request->getCheck( 'live' );
 720                 $this->editintro = $request->getText( 'editintro',
 721                         // Custom edit intro for new sections
 722                         $this->section === 'new' ? 'MediaWiki:addsection-editintro' : '' );
 723
 724                 // Allow extensions to modify form data
 725                 wfRunHooks( 'EditPage::importFormData', array( $this, $request ) );
 726
 727                 wfProfileOut( __METHOD__ );
 728         }
 729
 730         /**
 731          * Subpage overridable method for extracting the page content data from the
 732          * posted form to be placed in $this->textbox1, if using customized input
 733          * this method should be overrided and return the page text that will be used
 734          * for saving, preview parsing and so on...
 735          *
 736          * @param $request WebRequest
 737          */
 738         protected function importContentFormData( &$request ) {
 739                 return; // Don't do anything, EditPage already extracted wpTextbox1
 740         }
 741
 742         /**
 743          * Initialise form fields in the object
 744          * Called on the first invocation, e.g. when a user clicks an edit link
 745          * @return bool -- if the requested section is valid
 746          */
 747         function initialiseForm() {
 748                 global $wgUser;
 749                 $this->edittime = $this->mArticle->getTimestamp();
 750                 $this->textbox1 = $this->getContent( false );
 751                 // activate checkboxes if user wants them to be always active
 752                 # Sort out the "watch" checkbox
 753                 if ( $wgUser->getOption( 'watchdefault' ) ) {
 754                         # Watch all edits
 755                         $this->watchthis = true;
 756                 } elseif ( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
 757                         # Watch creations
 758                         $this->watchthis = true;
 759                 } elseif ( $wgUser->isWatched( $this->mTitle ) ) {
 760                         # Already watched
 761                         $this->watchthis = true;
 762                 }
 763                 if ( $wgUser->getOption( 'minordefault' ) && !$this->isNew ) {
 764                         $this->minoredit = true;
 765                 }
 766                 if ( $this->textbox1 === false ) {
 767                         return false;
 768                 }
 769                 wfProxyCheck();
 770                 return true;
 771         }
 772
 773         /**
 774          * Fetch initial editing page content.
 775          *
 776          * @param $def_text string
 777          * @return mixed string on success, $def_text for invalid sections
 778          * @private
 779          */
 780         function getContent( $def_text = '' ) {
 781                 global $wgOut, $wgRequest, $wgParser;
 782
 783                 wfProfileIn( __METHOD__ );
 784
 785                 $text = false;
 786
 787                 // For message page not locally set, use the i18n message.
 788                 // For other non-existent articles, use preload text if any.
 789                 if ( !$this->mTitle->exists() || $this->section == 'new' ) {
 790                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI && $this->section != 'new' ) {
 791                                 # If this is a system message, get the default text.
 792                                 $text = $this->mTitle->getDefaultMessageText();
 793                         }
 794                         if ( $text === false ) {
 795                                 # If requested, preload some text.
 796                                 $preload = $wgRequest->getVal( 'preload',
 797                                         // Custom preload text for new sections
 798                                         $this->section === 'new' ? 'MediaWiki:addsection-preload' : '' );
 799                                 $text = $this->getPreloadedText( $preload );
 800                         }
 801                 // For existing pages, get text based on "undo" or section parameters.
 802                 } else {
 803                         if ( $this->section != '' ) {
 804                                 // Get section edit text (returns $def_text for invalid sections)
 805                                 $text = $wgParser->getSection( $this->getOriginalContent(), $this->section, $def_text );
 806                         } else {
 807                                 $undoafter = $wgRequest->getInt( 'undoafter' );
 808                                 $undo = $wgRequest->getInt( 'undo' );
 809
 810                                 if ( $undo > 0 && $undoafter > 0 ) {
 811                                         if ( $undo < $undoafter ) {
 812                                                 # If they got undoafter and undo round the wrong way, switch them
 813                                                 list( $undo, $undoafter ) = array( $undoafter, $undo );
 814                                         }
 815
 816                                         $undorev = Revision::newFromId( $undo );
 817                                         $oldrev = Revision::newFromId( $undoafter );
 818
 819                                         # Sanity check, make sure it's the right page,
 820                                         # the revisions exist and they were not deleted.
 821                                         # Otherwise, $text will be left as-is.
 822                                         if ( !is_null( $undorev ) && !is_null( $oldrev ) &&
 823                                                 $undorev->getPage() == $oldrev->getPage() &&
 824                                                 $undorev->getPage() == $this->mTitle->getArticleID() &&
 825                                                 !$undorev->isDeleted( Revision::DELETED_TEXT ) &&
 826                                                 !$oldrev->isDeleted( Revision::DELETED_TEXT ) ) {
 827
 828                                                 $text = $this->mArticle->getUndoText( $undorev, $oldrev );
 829                                                 if ( $text === false ) {
 830                                                         # Warn the user that something went wrong
 831                                                         $undoMsg = 'failure';
 832                                                 } else {
 833                                                         # Inform the user of our success and set an automatic edit summary
 834                                                         $undoMsg = 'success';
 835
 836                                                         # If we just undid one rev, use an autosummary
 837                                                         $firstrev = $oldrev->getNext();
 838                                                         if ( $firstrev && $firstrev->getId() == $undo ) {
 839                                                                 $undoSummary = wfMsgForContent( 'undo-summary', $undo, $undorev->getUserText() );
 840                                                                 if ( $this->summary === '' ) {
 841                                                                         $this->summary = $undoSummary;
 842                                                                 } else {
 843                                                                         $this->summary = $undoSummary . wfMsgForContent( 'colon-separator' ) . $this->summary;
 844                                                                 }
 845                                                                 $this->undidRev = $undo;
 846                                                         }
 847                                                         $this->formtype = 'diff';
 848                                                 }
 849                                         } else {
 850                                                 // Failed basic sanity checks.
 851                                                 // Older revisions may have been removed since the link
 852                                                 // was created, or we may simply have got bogus input.
 853                                                 $undoMsg = 'norev';
 854                                         }
 855
 856                                         $class = ( $undoMsg == 'success' ? '' : 'error ' ) . "mw-undo-{$undoMsg}";
 857                                         $this->editFormPageTop .= $wgOut->parse( "<div class=\"{$class}\">" .
 858                                                 wfMsgNoTrans( 'undo-' . $undoMsg ) . '</div>', true, /* interface */true );
 859                                 }
 860
 861                                 if ( $text === false ) {
 862                                         $text = $this->getOriginalContent();
 863                                 }
 864                         }
 865                 }
 866
 867                 wfProfileOut( __METHOD__ );
 868                 return $text;
 869         }
 870
 871         /**
 872          * Get the content of the wanted revision, without section extraction.
 873          *
 874          * The result of this function can be used to compare user's input with
 875          * section replaced in its context (using WikiPage::replaceSection())
 876          * to the original text of the edit.
 877          *
 878          * This difers from Article::getContent() that when a missing revision is
 879          * encountered the result will be an empty string and not the
 880          * 'missing-revision' message.
 881          *
 882          * @since 1.19
 883          * @return string
 884          */
 885         private function getOriginalContent() {
 886                 if ( $this->section == 'new' ) {
 887                         return $this->getCurrentText();
 888                 }
 889                 $revision = $this->mArticle->getRevisionFetched();
 890                 if ( $revision === null ) {
 891                         return '';
 892                 }
 893                 return $this->mArticle->getContent();
 894         }
 895
 896         /**
 897          * Get the actual text of the page. This is basically similar to
 898          * WikiPage::getRawText() except that when the page doesn't exist an empty
 899          * string is returned instead of false.
 900          *
 901          * @since 1.19
 902          * @return string
 903          */
 904         private function getCurrentText() {
 905                 $text = $this->mArticle->getRawText();
 906                 if ( $text === false ) {
 907                         return '';
 908                 } else {
 909                         return $text;
 910                 }
 911         }
 912
 913         /**
 914          * Use this method before edit() to preload some text into the edit box
 915          *
 916          * @param $text string
 917          */
 918         public function setPreloadedText( $text ) {
 919                 $this->mPreloadText = $text;
 920         }
 921
 922         /**
 923          * Get the contents to be preloaded into the box, either set by
 924          * an earlier setPreloadText() or by loading the given page.
 925          *
 926          * @param $preload String: representing the title to preload from.
 927          * @return String
 928          */
 929         protected function getPreloadedText( $preload ) {
 930                 global $wgUser, $wgParser;
 931
 932                 if ( !empty( $this->mPreloadText ) ) {
 933                         return $this->mPreloadText;
 934                 }
 935
 936                 if ( $preload === '' ) {
 937                         return '';
 938                 }
 939
 940                 $title = Title::newFromText( $preload );
 941                 # Check for existence to avoid getting MediaWiki:Noarticletext
 942                 if ( $title === null || !$title->exists() || !$title->userCan( 'read' ) ) {
 943                         return '';
 944                 }
 945
 946                 $page = WikiPage::factory( $title );
 947                 if ( $page->isRedirect() ) {
 948                         $title = $page->getRedirectTarget();
 949                         # Same as before
 950                         if ( $title === null || !$title->exists() || !$title->userCan( 'read' ) ) {
 951                                 return '';
 952                         }
 953                         $page = WikiPage::factory( $title );
 954                 }
 955
 956                 $parserOptions = ParserOptions::newFromUser( $wgUser );
 957                 return $wgParser->getPreloadText( $page->getRawText(), $title, $parserOptions );
 958         }
 959
 960         /**
 961          * Make sure the form isn't faking a user's credentials.
 962          *
 963          * @param $request WebRequest
 964          * @return bool
 965          * @private
 966          */
 967         function tokenOk( &$request ) {
 968                 global $wgUser;
 969                 $token = $request->getVal( 'wpEditToken' );
 970                 $this->mTokenOk = $wgUser->matchEditToken( $token );
 971                 $this->mTokenOkExceptSuffix = $wgUser->matchEditTokenNoSuffix( $token );
 972                 return $this->mTokenOk;
 973         }
 974
 975         /**
 976          * Attempt submission
 977          * @return bool false if output is done, true if the rest of the form should be displayed
 978          */
 979         function attemptSave() {
 980                 global $wgUser, $wgOut;
 981
 982                 $resultDetails = false;
 983                 # Allow bots to exempt some edits from bot flagging
 984                 $bot = $wgUser->isAllowed( 'bot' ) && $this->bot;
 985                 $status = $this->internalAttemptSave( $resultDetails, $bot );
 986                 // FIXME: once the interface for internalAttemptSave() is made nicer, this should use the message in $status
 987                 if ( $status->value == self::AS_SUCCESS_UPDATE || $status->value == self::AS_SUCCESS_NEW_ARTICLE ) {
 988                         $this->didSave = true;
 989                 }
 990
 991                 switch ( $status->value ) {
 992                         case self::AS_HOOK_ERROR_EXPECTED:
 993                         case self::AS_CONTENT_TOO_BIG:
 994                         case self::AS_ARTICLE_WAS_DELETED:
 995                         case self::AS_CONFLICT_DETECTED:
 996                         case self::AS_SUMMARY_NEEDED:
 997                         case self::AS_TEXTBOX_EMPTY:
 998                         case self::AS_MAX_ARTICLE_SIZE_EXCEEDED:
 999                         case self::AS_END:
1000                                 return true;
1001
1002                         case self::AS_HOOK_ERROR:
1003                                 return false;
1004
1005                         case self::AS_SUCCESS_NEW_ARTICLE:
1006                                 $query = $resultDetails['redirect'] ? 'redirect=no' : '';
1007                                 $anchor = isset ( $resultDetails['sectionanchor'] ) ? $resultDetails['sectionanchor'] : '';
1008                                 $wgOut->redirect( $this->mTitle->getFullURL( $query ) . $anchor );
1009                                 return false;
1010
1011                         case self::AS_SUCCESS_UPDATE:
1012                                 $extraQuery = '';
1013                                 $sectionanchor = $resultDetails['sectionanchor'];
1014
1015                                 // Give extensions a chance to modify URL query on update
1016                                 wfRunHooks( 'ArticleUpdateBeforeRedirect', array( $this->mArticle, &$sectionanchor, &$extraQuery ) );
1017
1018                                 if ( $resultDetails['redirect'] ) {
1019                                         if ( $extraQuery == '' ) {
1020                                                 $extraQuery = 'redirect=no';
1021                                         } else {
1022                                                 $extraQuery = 'redirect=no&' . $extraQuery;
1023                                         }
1024                                 }
1025                                 $wgOut->redirect( $this->mTitle->getFullURL( $extraQuery ) . $sectionanchor );
1026                                 return false;
1027
1028                         case self::AS_BLANK_ARTICLE:
1029                                 $wgOut->redirect( $this->getContextTitle()->getFullURL() );
1030                                 return false;
1031
1032                         case self::AS_SPAM_ERROR:
1033                                 $this->spamPageWithContent( $resultDetails['spam'] );
1034                                 return false;
1035
1036                         case self::AS_BLOCKED_PAGE_FOR_USER:
1037                                 throw new UserBlockedError( $wgUser->getBlock() );
1038
1039                         case self::AS_IMAGE_REDIRECT_ANON:
1040                         case self::AS_IMAGE_REDIRECT_LOGGED:
1041                                 throw new PermissionsError( 'upload' );
1042
1043                         case self::AS_READ_ONLY_PAGE_ANON:
1044                         case self::AS_READ_ONLY_PAGE_LOGGED:
1045                                 throw new PermissionsError( 'edit' );
1046
1047                         case self::AS_READ_ONLY_PAGE:
1048                                 throw new ReadOnlyError;
1049
1050                         case self::AS_RATE_LIMITED:
1051                                 throw new ThrottledError();
1052
1053                         case self::AS_NO_CREATE_PERMISSION:
1054                                 $permission = $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage';
1055                                 throw new PermissionsError( $permission );
1056
1057                         default:
1058                                 // We don't recognize $status->value. The only way that can happen
1059                                 // is if an extension hook aborted from inside ArticleSave.
1060                                 // Render the status object into $this->hookError
1061                                 // FIXME this sucks, we should just use the Status object throughout
1062                                 $this->hookError = '<div class="error">' . $status->getWikitext() .
1063                                         '</div>';
1064                                 return true;
1065                 }
1066         }
1067
1068         /**
1069          * Attempt submission (no UI)
1070          *
1071          * @param $result
1072          * @param $bot bool
1073          *
1074          * @return Status object, possibly with a message, but always with one of the AS_* constants in $status->value,
1075          *
1076          * FIXME: This interface is TERRIBLE, but hard to get rid of due to various error display idiosyncrasies. There are
1077          * also lots of cases where error metadata is set in the object and retrieved later instead of being returned, e.g.
1078          * AS_CONTENT_TOO_BIG and AS_BLOCKED_PAGE_FOR_USER. All that stuff needs to be cleaned up some time.
1079          */
1080         function internalAttemptSave( &$result, $bot = false ) {
1081                 global $wgUser, $wgRequest, $wgParser, $wgMaxArticleSize;
1082
1083                 $status = Status::newGood();
1084
1085                 wfProfileIn( __METHOD__  );
1086                 wfProfileIn( __METHOD__ . '-checks' );
1087
1088                 if ( !wfRunHooks( 'EditPage::attemptSave', array( $this ) ) ) {
1089                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving\n" );
1090                         $status->fatal( 'hookaborted' );
1091                         $status->value = self::AS_HOOK_ERROR;
1092                         wfProfileOut( __METHOD__ . '-checks' );
1093                         wfProfileOut( __METHOD__  );
1094                         return $status;
1095                 }
1096
1097                 # Check image redirect
1098                 if ( $this->mTitle->getNamespace() == NS_FILE &&
1099                         Title::newFromRedirect( $this->textbox1 ) instanceof Title &&
1100                         !$wgUser->isAllowed( 'upload' ) ) {
1101                                 $code = $wgUser->isAnon() ? self::AS_IMAGE_REDIRECT_ANON : self::AS_IMAGE_REDIRECT_LOGGED;
1102                                 $status->setResult( false, $code );
1103
1104                                 wfProfileOut( __METHOD__ . '-checks' );
1105                                 wfProfileOut( __METHOD__  );
1106
1107                                 return $status;
1108                 }
1109
1110                 # Check for spam
1111                 $match = self::matchSummarySpamRegex( $this->summary );
1112                 if ( $match === false ) {
1113                         $match = self::matchSpamRegex( $this->textbox1 );
1114                 }
1115                 if ( $match !== false ) {
1116                         $result['spam'] = $match;
1117                         $ip = $wgRequest->getIP();
1118                         $pdbk = $this->mTitle->getPrefixedDBkey();
1119                         $match = str_replace( "\n", '', $match );
1120                         wfDebugLog( 'SpamRegex', "$ip spam regex hit [[$pdbk]]: \"$match\"" );
1121                         $status->fatal( 'spamprotectionmatch', $match );
1122                         $status->value = self::AS_SPAM_ERROR;
1123                         wfProfileOut( __METHOD__ . '-checks' );
1124                         wfProfileOut( __METHOD__ );
1125                         return $status;
1126                 }
1127                 if ( !wfRunHooks( 'EditFilter', array( $this, $this->textbox1, $this->section, &$this->hookError, $this->summary ) ) ) {
1128                         # Error messages etc. could be handled within the hook...
1129                         $status->fatal( 'hookaborted' );
1130                         $status->value = self::AS_HOOK_ERROR;
1131                         wfProfileOut( __METHOD__ . '-checks' );
1132                         wfProfileOut( __METHOD__ );
1133                         return $status;
1134                 } elseif ( $this->hookError != '' ) {
1135                         # ...or the hook could be expecting us to produce an error
1136                         $status->fatal( 'hookaborted' );
1137                         $status->value = self::AS_HOOK_ERROR_EXPECTED;
1138                         wfProfileOut( __METHOD__ . '-checks' );
1139                         wfProfileOut( __METHOD__ );
1140                         return $status;
1141                 }
1142
1143                 if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
1144                         // Auto-block user's IP if the account was "hard" blocked
1145                         $wgUser->spreadAnyEditBlock();
1146                         # Check block state against master, thus 'false'.
1147                         $status->setResult( false, self::AS_BLOCKED_PAGE_FOR_USER );
1148                         wfProfileOut( __METHOD__ . '-checks' );
1149                         wfProfileOut( __METHOD__ );
1150                         return $status;
1151                 }
1152
1153                 $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
1154                 if ( $this->kblength > $wgMaxArticleSize ) {
1155                         // Error will be displayed by showEditForm()
1156                         $this->tooBig = true;
1157                         $status->setResult( false, self::AS_CONTENT_TOO_BIG );
1158                         wfProfileOut( __METHOD__ . '-checks' );
1159                         wfProfileOut( __METHOD__ );
1160                         return $status;
1161                 }
1162
1163                 if ( !$wgUser->isAllowed( 'edit' ) ) {
1164                         if ( $wgUser->isAnon() ) {
1165                                 $status->setResult( false, self::AS_READ_ONLY_PAGE_ANON );
1166                                 wfProfileOut( __METHOD__ . '-checks' );
1167                                 wfProfileOut( __METHOD__ );
1168                                 return $status;
1169                         } else {
1170                                 $status->fatal( 'readonlytext' );
1171                                 $status->value = self::AS_READ_ONLY_PAGE_LOGGED;
1172                                 wfProfileOut( __METHOD__ . '-checks' );
1173                                 wfProfileOut( __METHOD__ );
1174                                 return $status;
1175                         }
1176                 }
1177
1178                 if ( wfReadOnly() ) {
1179                         $status->fatal( 'readonlytext' );
1180                         $status->value = self::AS_READ_ONLY_PAGE;
1181                         wfProfileOut( __METHOD__ . '-checks' );
1182                         wfProfileOut( __METHOD__ );
1183                         return $status;
1184                 }
1185                 if ( $wgUser->pingLimiter() ) {
1186                         $status->fatal( 'actionthrottledtext' );
1187                         $status->value = self::AS_RATE_LIMITED;
1188                         wfProfileOut( __METHOD__ . '-checks' );
1189                         wfProfileOut( __METHOD__ );
1190                         return $status;
1191                 }
1192
1193                 # If the article has been deleted while editing, don't save it without
1194                 # confirmation
1195                 if ( $this->wasDeletedSinceLastEdit() && !$this->recreate ) {
1196                         $status->setResult( false, self::AS_ARTICLE_WAS_DELETED );
1197                         wfProfileOut( __METHOD__ . '-checks' );
1198                         wfProfileOut( __METHOD__ );
1199                         return $status;
1200                 }
1201
1202                 wfProfileOut( __METHOD__ . '-checks' );
1203
1204                 # Load the page data from the master. If anything changes in the meantime,
1205                 # we detect it by using page_latest like a token in a 1 try compare-and-swap.
1206                 $this->mArticle->loadPageData( 'fromdbmaster' );
1207                 $new = !$this->mArticle->exists();
1208
1209                 if ( $new ) {
1210                         // Late check for create permission, just in case *PARANOIA*
1211                         if ( !$this->mTitle->userCan( 'create' ) ) {
1212                                 $status->fatal( 'nocreatetext' );
1213                                 $status->value = self::AS_NO_CREATE_PERMISSION;
1214                                 wfDebug( __METHOD__ . ": no create permission\n" );
1215                                 wfProfileOut( __METHOD__ );
1216                                 return $status;
1217                         }
1218
1219                         # Don't save a new article if it's blank.
1220                         if ( $this->textbox1 == '' ) {
1221                                 $status->setResult( false, self::AS_BLANK_ARTICLE );
1222                                 wfProfileOut( __METHOD__ );
1223                                 return $status;
1224                         }
1225
1226                         // Run post-section-merge edit filter
1227                         if ( !wfRunHooks( 'EditFilterMerged', array( $this, $this->textbox1, &$this->hookError, $this->summary ) ) ) {
1228                                 # Error messages etc. could be handled within the hook...
1229                                 $status->fatal( 'hookaborted' );
1230                                 $status->value = self::AS_HOOK_ERROR;
1231                                 wfProfileOut( __METHOD__ );
1232                                 return $status;
1233                         } elseif ( $this->hookError != '' ) {
1234                                 # ...or the hook could be expecting us to produce an error
1235                                 $status->fatal( 'hookaborted' );
1236                                 $status->value = self::AS_HOOK_ERROR_EXPECTED;
1237                                 wfProfileOut( __METHOD__ );
1238                                 return $status;
1239                         }
1240
1241                         $text = $this->textbox1;
1242                         $result['sectionanchor'] = '';
1243                         if ( $this->section == 'new' ) {
1244                                 if ( $this->sectiontitle !== '' ) {
1245                                         // Insert the section title above the content.
1246                                         $text = wfMsgForContent( 'newsectionheaderdefaultlevel', $this->sectiontitle ) . "\n\n" . $text;
1247
1248                                         // Jump to the new section
1249                                         $result['sectionanchor'] = $wgParser->guessLegacySectionNameFromWikiText( $this->sectiontitle );
1250
1251                                         // If no edit summary was specified, create one automatically from the section
1252                                         // title and have it link to the new section. Otherwise, respect the summary as
1253                                         // passed.
1254                                         if ( $this->summary === '' ) {
1255                                                 $cleanSectionTitle = $wgParser->stripSectionName( $this->sectiontitle );
1256                                                 $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSectionTitle );
1257                                         }
1258                                 } elseif ( $this->summary !== '' ) {
1259                                         // Insert the section title above the content.
1260                                         $text = wfMsgForContent( 'newsectionheaderdefaultlevel', $this->summary ) . "\n\n" . $text;
1261
1262                                         // Jump to the new section
1263                                         $result['sectionanchor'] = $wgParser->guessLegacySectionNameFromWikiText( $this->summary );
1264
1265                                         // Create a link to the new section from the edit summary.
1266                                         $cleanSummary = $wgParser->stripSectionName( $this->summary );
1267                                         $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
1268                                 }
1269                         }
1270
1271                         $status->value = self::AS_SUCCESS_NEW_ARTICLE;
1272
1273                 } else {
1274
1275                         # Article exists. Check for edit conflict.
1276                         $timestamp = $this->mArticle->getTimestamp();
1277                         wfDebug( "timestamp: {$timestamp}, edittime: {$this->edittime}\n" );
1278
1279                         if ( $timestamp != $this->edittime ) {
1280                                 $this->isConflict = true;
1281                                 if ( $this->section == 'new' ) {
1282                                         if ( $this->mArticle->getUserText() == $wgUser->getName() &&
1283                                                 $this->mArticle->getComment() == $this->summary ) {
1284                                                 // Probably a duplicate submission of a new comment.
1285                                                 // This can happen when squid resends a request after
1286                                                 // a timeout but the first one actually went through.
1287                                                 wfDebug( __METHOD__ . ": duplicate new section submission; trigger edit conflict!\n" );
1288                                         } else {
1289                                                 // New comment; suppress conflict.
1290                                                 $this->isConflict = false;
1291                                                 wfDebug( __METHOD__ . ": conflict suppressed; new section\n" );
1292                                         }
1293                                 } elseif ( $this->section == '' && $this->userWasLastToEdit( $wgUser->getId(), $this->edittime ) ) {
1294                                         # Suppress edit conflict with self, except for section edits where merging is required.
1295                                         wfDebug( __METHOD__ . ": Suppressing edit conflict, same user.\n" );
1296                                         $this->isConflict = false;
1297                                 }
1298                         }
1299
1300                         // If sectiontitle is set, use it, otherwise use the summary as the section title (for
1301                         // backwards compatibility with old forms/bots).
1302                         if ( $this->sectiontitle !== '' ) {
1303                                 $sectionTitle = $this->sectiontitle;
1304                         } else {
1305                                 $sectionTitle = $this->summary;
1306                         }
1307
1308                         if ( $this->isConflict ) {
1309                                 wfDebug( __METHOD__ . ": conflict! getting section '$this->section' for time '$this->edittime' (article time '{$timestamp}')\n" );
1310                                 $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $sectionTitle, $this->edittime );
1311                         } else {
1312                                 wfDebug( __METHOD__ . ": getting section '$this->section'\n" );
1313                                 $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $sectionTitle );
1314                         }
1315                         if ( is_null( $text ) ) {
1316                                 wfDebug( __METHOD__ . ": activating conflict; section replace failed.\n" );
1317                                 $this->isConflict = true;
1318                                 $text = $this->textbox1; // do not try to merge here!
1319                         } elseif ( $this->isConflict ) {
1320                                 # Attempt merge
1321                                 if ( $this->mergeChangesInto( $text ) ) {
1322                                         // Successful merge! Maybe we should tell the user the good news?
1323                                         $this->isConflict = false;
1324                                         wfDebug( __METHOD__ . ": Suppressing edit conflict, successful merge.\n" );
1325                                 } else {
1326                                         $this->section = '';
1327                                         $this->textbox1 = $text;
1328                                         wfDebug( __METHOD__ . ": Keeping edit conflict, failed merge.\n" );
1329                                 }
1330                         }
1331
1332                         if ( $this->isConflict ) {
1333                                 $status->setResult( false, self::AS_CONFLICT_DETECTED );
1334                                 wfProfileOut( __METHOD__ );
1335                                 return $status;
1336                         }
1337
1338                         // Run post-section-merge edit filter
1339                         if ( !wfRunHooks( 'EditFilterMerged', array( $this, $text, &$this->hookError, $this->summary ) ) ) {
1340                                 # Error messages etc. could be handled within the hook...
1341                                 $status->fatal( 'hookaborted' );
1342                                 $status->value = self::AS_HOOK_ERROR;
1343                                 wfProfileOut( __METHOD__ );
1344                                 return $status;
1345                         } elseif ( $this->hookError != '' ) {
1346                                 # ...or the hook could be expecting us to produce an error
1347                                 $status->fatal( 'hookaborted' );
1348                                 $status->value = self::AS_HOOK_ERROR_EXPECTED;
1349                                 wfProfileOut( __METHOD__ );
1350                                 return $status;
1351                         }
1352
1353                         # Handle the user preference to force summaries here, but not for null edits
1354                         if ( $this->section != 'new' && !$this->allowBlankSummary
1355                                 && $this->getOriginalContent() != $text
1356                                 && !Title::newFromRedirect( $text ) ) # check if it's not a redirect
1357                         {
1358                                 if ( md5( $this->summary ) == $this->autoSumm ) {
1359                                         $this->missingSummary = true;
1360                                         $status->fatal( 'missingsummary' );
1361                                         $status->value = self::AS_SUMMARY_NEEDED;
1362                                         wfProfileOut( __METHOD__ );
1363                                         return $status;
1364                                 }
1365                         }
1366
1367                         # And a similar thing for new sections
1368                         if ( $this->section == 'new' && !$this->allowBlankSummary ) {
1369                                 if ( trim( $this->summary ) == '' ) {
1370                                         $this->missingSummary = true;
1371                                         $status->fatal( 'missingsummary' ); // or 'missingcommentheader' if $section == 'new'. Blegh
1372                                         $status->value = self::AS_SUMMARY_NEEDED;
1373                                         wfProfileOut( __METHOD__ );
1374                                         return $status;
1375                                 }
1376                         }
1377
1378                         # All's well
1379                         wfProfileIn( __METHOD__ . '-sectionanchor' );
1380                         $sectionanchor = '';
1381                         if ( $this->section == 'new' ) {
1382                                 if ( $this->textbox1 == '' ) {
1383                                         $this->missingComment = true;
1384                                         $status->fatal( 'missingcommenttext' );
1385                                         $status->value = self::AS_TEXTBOX_EMPTY;
1386                                         wfProfileOut( __METHOD__ . '-sectionanchor' );
1387                                         wfProfileOut( __METHOD__ );
1388                                         return $status;
1389                                 }
1390                                 if ( $this->sectiontitle !== '' ) {
1391                                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $this->sectiontitle );
1392                                         // If no edit summary was specified, create one automatically from the section
1393                                         // title and have it link to the new section. Otherwise, respect the summary as
1394                                         // passed.
1395                                         if ( $this->summary === '' ) {
1396                                                 $cleanSectionTitle = $wgParser->stripSectionName( $this->sectiontitle );
1397                                                 $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSectionTitle );
1398                                         }
1399                                 } elseif ( $this->summary !== '' ) {
1400                                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $this->summary );
1401                                         # This is a new section, so create a link to the new section
1402                                         # in the revision summary.
1403                                         $cleanSummary = $wgParser->stripSectionName( $this->summary );
1404                                         $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
1405                                 }
1406                         } elseif ( $this->section != '' ) {
1407                                 # Try to get a section anchor from the section source, redirect to edited section if header found
1408                                 # XXX: might be better to integrate this into Article::replaceSection
1409                                 # for duplicate heading checking and maybe parsing
1410                                 $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
1411                                 # we can't deal with anchors, includes, html etc in the header for now,
1412                                 # headline would need to be parsed to improve this
1413                                 if ( $hasmatch && strlen( $matches[2] ) > 0 ) {
1414                                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $matches[2] );
1415                                 }
1416                         }
1417                         $result['sectionanchor'] = $sectionanchor;
1418                         wfProfileOut( __METHOD__ . '-sectionanchor' );
1419
1420                         // Save errors may fall down to the edit form, but we've now
1421                         // merged the section into full text. Clear the section field
1422                         // so that later submission of conflict forms won't try to
1423                         // replace that into a duplicated mess.
1424                         $this->textbox1 = $text;
1425                         $this->section = '';
1426
1427                         $status->value = self::AS_SUCCESS_UPDATE;
1428                 }
1429
1430                 // Check for length errors again now that the section is merged in
1431                 $this->kblength = (int)( strlen( $text ) / 1024 );
1432                 if ( $this->kblength > $wgMaxArticleSize ) {
1433                         $this->tooBig = true;
1434                         $status->setResult( false, self::AS_MAX_ARTICLE_SIZE_EXCEEDED );
1435                         wfProfileOut( __METHOD__ );
1436                         return $status;
1437                 }
1438
1439                 $flags = EDIT_DEFER_UPDATES | EDIT_AUTOSUMMARY |
1440                         ( $new ? EDIT_NEW : EDIT_UPDATE ) |
1441                         ( ( $this->minoredit && !$this->isNew ) ? EDIT_MINOR : 0 ) |
1442                         ( $bot ? EDIT_FORCE_BOT : 0 );
1443
1444                 $doEditStatus = $this->mArticle->doEdit( $text, $this->summary, $flags );
1445
1446                 if ( $doEditStatus->isOK() ) {
1447                         $result['redirect'] = Title::newFromRedirect( $text ) !== null;
1448                         $this->commitWatch();
1449                         wfProfileOut( __METHOD__ );
1450                         return $status;
1451                 } else {
1452                         // Failure from doEdit()
1453                         // Show the edit conflict page for certain recognized errors from doEdit(),
1454                         // but don't show it for errors from extension hooks
1455                         $errors = $doEditStatus->getErrorsArray();
1456                         if ( in_array( $errors[0][0], array( 'edit-gone-missing', 'edit-conflict',
1457                                 'edit-already-exists' ) ) )
1458                         {
1459                                 $this->isConflict = true;
1460                                 // Destroys data doEdit() put in $status->value but who cares
1461                                 $doEditStatus->value = self::AS_END;
1462                         }
1463                         wfProfileOut( __METHOD__ );
1464                         return $doEditStatus;
1465                 }
1466         }
1467
1468         /**
1469          * Commit the change of watch status
1470          */
1471         protected function commitWatch() {
1472                 global $wgUser;
1473                 if ( $wgUser->isLoggedIn() && $this->watchthis != $wgUser->isWatched( $this->mTitle ) ) {
1474                         $dbw = wfGetDB( DB_MASTER );
1475                         $dbw->begin( __METHOD__ );
1476                         if ( $this->watchthis ) {
1477                                 WatchAction::doWatch( $this->mTitle, $wgUser );
1478                         } else {
1479                                 WatchAction::doUnwatch( $this->mTitle, $wgUser );
1480                         }
1481                         $dbw->commit( __METHOD__ );
1482                 }
1483         }
1484
1485         /**
1486          * Check if no edits were made by other users since
1487          * the time a user started editing the page. Limit to
1488          * 50 revisions for the sake of performance.
1489          *
1490          * @param $id int
1491          * @param $edittime string
1492          *
1493          * @return bool
1494          */
1495         protected function userWasLastToEdit( $id, $edittime ) {
1496                 if ( !$id ) return false;
1497                 $dbw = wfGetDB( DB_MASTER );
1498                 $res = $dbw->select( 'revision',
1499                         'rev_user',
1500                         array(
1501                                 'rev_page' => $this->mTitle->getArticleID(),
1502                                 'rev_timestamp > ' . $dbw->addQuotes( $dbw->timestamp( $edittime ) )
1503                         ),
1504                         __METHOD__,
1505                         array( 'ORDER BY' => 'rev_timestamp ASC', 'LIMIT' => 50 ) );
1506                 foreach ( $res as $row ) {
1507                         if ( $row->rev_user != $id ) {
1508                                 return false;
1509                         }
1510                 }
1511                 return true;
1512         }
1513
1514         /**
1515          * @private
1516          * @todo document
1517          *
1518          * @param $editText string
1519          *
1520          * @return bool
1521          */
1522         function mergeChangesInto( &$editText ) {
1523                 wfProfileIn( __METHOD__ );
1524
1525                 $db = wfGetDB( DB_MASTER );
1526
1527                 // This is the revision the editor started from
1528                 $baseRevision = $this->getBaseRevision();
1529                 if ( is_null( $baseRevision ) ) {
1530                         wfProfileOut( __METHOD__ );
1531                         return false;
1532                 }
1533                 $baseText = $baseRevision->getText();
1534
1535                 // The current state, we want to merge updates into it
1536                 $currentRevision = Revision::loadFromTitle( $db, $this->mTitle );
1537                 if ( is_null( $currentRevision ) ) {
1538                         wfProfileOut( __METHOD__ );
1539                         return false;
1540                 }
1541                 $currentText = $currentRevision->getText();
1542
1543                 $result = '';
1544                 if ( wfMerge( $baseText, $editText, $currentText, $result ) ) {
1545                         $editText = $result;
1546                         wfProfileOut( __METHOD__ );
1547                         return true;
1548                 } else {
1549                         wfProfileOut( __METHOD__ );
1550                         return false;
1551                 }
1552         }
1553
1554         /**
1555          * @return Revision
1556          */
1557         function getBaseRevision() {
1558                 if ( !$this->mBaseRevision ) {
1559                         $db = wfGetDB( DB_MASTER );
1560                         $baseRevision = Revision::loadFromTimestamp(
1561                                 $db, $this->mTitle, $this->edittime );
1562                         return $this->mBaseRevision = $baseRevision;
1563                 } else {
1564                         return $this->mBaseRevision;
1565                 }
1566         }
1567
1568         /**
1569          * Check given input text against $wgSpamRegex, and return the text of the first match.
1570          *
1571          * @param $text string
1572          *
1573          * @return string|bool matching string or false
1574          */
1575         public static function matchSpamRegex( $text ) {
1576                 global $wgSpamRegex;
1577                 // For back compatibility, $wgSpamRegex may be a single string or an array of regexes.
1578                 $regexes = (array)$wgSpamRegex;
1579                 return self::matchSpamRegexInternal( $text, $regexes );
1580         }
1581
1582         /**
1583          * Check given input text against $wgSpamRegex, and return the text of the first match.
1584          *
1585          * @param $text string
1586          *
1587          * @return string|bool  matching string or false
1588          */
1589         public static function matchSummarySpamRegex( $text ) {
1590                 global $wgSummarySpamRegex;
1591                 $regexes = (array)$wgSummarySpamRegex;
1592                 return self::matchSpamRegexInternal( $text, $regexes );
1593         }
1594
1595         /**
1596          * @param $text string
1597          * @param $regexes array
1598          * @return bool|string
1599          */
1600         protected static function matchSpamRegexInternal( $text, $regexes ) {
1601                 foreach ( $regexes as $regex ) {
1602                         $matches = array();
1603                         if ( preg_match( $regex, $text, $matches ) ) {
1604                                 return $matches[0];
1605                         }
1606                 }
1607                 return false;
1608         }
1609
1610         function setHeaders() {
1611                 global $wgOut, $wgUser;
1612
1613                 $wgOut->addModules( 'mediawiki.action.edit' );
1614
1615                 if ( $wgUser->getOption( 'uselivepreview', false ) ) {
1616                         $wgOut->addModules( 'mediawiki.legacy.preview' );
1617                 }
1618                 // Bug #19334: textarea jumps when editing articles in IE8
1619                 $wgOut->addStyle( 'common/IE80Fixes.css', 'screen', 'IE 8' );
1620
1621                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1622
1623                 # Enabled article-related sidebar, toplinks, etc.
1624                 $wgOut->setArticleRelated( true );
1625
1626                 $contextTitle = $this->getContextTitle();
1627                 if ( $this->isConflict ) {
1628                         $msg = 'editconflict';
1629                 } elseif ( $contextTitle->exists() && $this->section != '' ) {
1630                         $msg = $this->section == 'new' ? 'editingcomment' : 'editingsection';
1631                 } else {
1632                         $msg = $contextTitle->exists() || ( $contextTitle->getNamespace() == NS_MEDIAWIKI && $contextTitle->getDefaultMessageText() !== false ) ?
1633                                 'editing' : 'creating';
1634                 }
1635                 # Use the title defined by DISPLAYTITLE magic word when present
1636                 $displayTitle = isset( $this->mParserOutput ) ? $this->mParserOutput->getDisplayTitle() : false;
1637                 if ( $displayTitle === false ) {
1638                         $displayTitle = $contextTitle->getPrefixedText();
1639                 }
1640                 $wgOut->setPageTitle( wfMessage( $msg, $displayTitle ) );
1641         }
1642
1643         /**
1644          * Show all applicable editing introductions
1645          */
1646         protected function showIntro() {
1647                 global $wgOut, $wgUser;
1648                 if ( $this->suppressIntro ) {
1649                         return;
1650                 }
1651
1652                 $namespace = $this->mTitle->getNamespace();
1653
1654                 if ( $namespace == NS_MEDIAWIKI ) {
1655                         # Show a warning if editing an interface message
1656                         $wgOut->wrapWikiMsg( "<div class='mw-editinginterface'>\n$1\n</div>", 'editinginterface' );
1657                 } else if( $namespace == NS_FILE ) {
1658                         # Show a hint to shared repo
1659                         $file = wfFindFile( $this->mTitle );
1660                         if( $file && !$file->isLocal() ) {
1661                                 $descUrl = $file->getDescriptionUrl();
1662                                 # there must be a description url to show a hint to shared repo
1663                                 if( $descUrl ) {
1664                                         if( !$this->mTitle->exists() ) {
1665                                                 $wgOut->wrapWikiMsg( "<div class=\"mw-sharedupload-desc-create\">\n$1\n</div>", array (
1666                                                                         'sharedupload-desc-create', $file->getRepo()->getDisplayName(), $descUrl
1667                                                 ) );
1668                                         } else {
1669                                                 $wgOut->wrapWikiMsg( "<div class=\"mw-sharedupload-desc-edit\">\n$1\n</div>", array(
1670                                                                         'sharedupload-desc-edit', $file->getRepo()->getDisplayName(), $descUrl
1671                                                 ) );
1672                                         }
1673                                 }
1674                         }
1675                 }
1676
1677                 # Show a warning message when someone creates/edits a user (talk) page but the user does not exist
1678                 # Show log extract when the user is currently blocked
1679                 if ( $namespace == NS_USER || $namespace == NS_USER_TALK ) {
1680                         $parts = explode( '/', $this->mTitle->getText(), 2 );
1681                         $username = $parts[0];
1682                         $user = User::newFromName( $username, false /* allow IP users*/ );
1683                         $ip = User::isIP( $username );
1684                         if ( !( $user && $user->isLoggedIn() ) && !$ip ) { # User does not exist
1685                                 $wgOut->wrapWikiMsg( "<div class=\"mw-userpage-userdoesnotexist error\">\n$1\n</div>",
1686                                         array( 'userpage-userdoesnotexist', wfEscapeWikiText( $username ) ) );
1687                         } elseif ( $user->isBlocked() ) { # Show log extract if the user is currently blocked
1688                                 LogEventsList::showLogExtract(
1689                                         $wgOut,
1690                                         'block',
1691                                         $user->getUserPage(),
1692                                         '',
1693                                         array(
1694                                                 'lim' => 1,
1695                                                 'showIfEmpty' => false,
1696                                                 'msgKey' => array(
1697                                                         'blocked-notice-logextract',
1698                                                         $user->getName() # Support GENDER in notice
1699                                                 )
1700                                         )
1701                                 );
1702                         }
1703                 }
1704                 # Try to add a custom edit intro, or use the standard one if this is not possible.
1705                 if ( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
1706                         if ( $wgUser->isLoggedIn() ) {
1707                                 $wgOut->wrapWikiMsg( "<div class=\"mw-newarticletext\">\n$1\n</div>", 'newarticletext' );
1708                         } else {
1709                                 $wgOut->wrapWikiMsg( "<div class=\"mw-newarticletextanon\">\n$1\n</div>", 'newarticletextanon' );
1710                         }
1711                 }
1712                 # Give a notice if the user is editing a deleted/moved page...
1713                 if ( !$this->mTitle->exists() ) {
1714                         LogEventsList::showLogExtract( $wgOut, array( 'delete', 'move' ), $this->mTitle,
1715                                 '', array( 'lim' => 10,
1716                                            'conds' => array( "log_action != 'revision'" ),
1717                                            'showIfEmpty' => false,
1718                                            'msgKey' => array( 'recreate-moveddeleted-warn' ) )
1719                         );
1720                 }
1721         }
1722
1723         /**
1724          * Attempt to show a custom editing introduction, if supplied
1725          *
1726          * @return bool
1727          */
1728         protected function showCustomIntro() {
1729                 if ( $this->editintro ) {
1730                         $title = Title::newFromText( $this->editintro );
1731                         if ( $title instanceof Title && $title->exists() && $title->userCan( 'read' ) ) {
1732                                 global $wgOut;
1733                                 // Added using template syntax, to take <noinclude>'s into account.
1734                                 $wgOut->addWikiTextTitleTidy( '{{:' . $title->getFullText() . '}}', $this->mTitle );
1735                                 return true;
1736                         } else {
1737                                 return false;
1738                         }
1739                 } else {
1740                         return false;
1741                 }
1742         }
1743
1744         /**
1745          * Send the edit form and related headers to $wgOut
1746          * @param $formCallback Callback that takes an OutputPage parameter; will be called
1747          *     during form output near the top, for captchas and the like.
1748          */
1749         function showEditForm( $formCallback = null ) {
1750                 global $wgOut, $wgUser;
1751
1752                 wfProfileIn( __METHOD__ );
1753
1754                 # need to parse the preview early so that we know which templates are used,
1755                 # otherwise users with "show preview after edit box" will get a blank list
1756                 # we parse this near the beginning so that setHeaders can do the title
1757                 # setting work instead of leaving it in getPreviewText
1758                 $previewOutput = '';
1759                 if ( $this->formtype == 'preview' ) {
1760                         $previewOutput = $this->getPreviewText();
1761                 }
1762
1763                 wfRunHooks( 'EditPage::showEditForm:initial', array( &$this, &$wgOut ) );
1764
1765                 $this->setHeaders();
1766
1767                 if ( $this->showHeader() === false ) {
1768                         wfProfileOut( __METHOD__ );
1769                         return;
1770                 }
1771
1772                 $wgOut->addHTML( $this->editFormPageTop );
1773
1774                 if ( $wgUser->getOption( 'previewontop' ) ) {
1775                         $this->displayPreviewArea( $previewOutput, true );
1776                 }
1777
1778                 $wgOut->addHTML( $this->editFormTextTop );
1779
1780                 $showToolbar = true;
1781                 if ( $this->wasDeletedSinceLastEdit() ) {
1782                         if ( $this->formtype == 'save' ) {
1783                                 // Hide the toolbar and edit area, user can click preview to get it back
1784                                 // Add an confirmation checkbox and explanation.
1785                                 $showToolbar = false;
1786                         } else {
1787                                 $wgOut->wrapWikiMsg( "<div class='error mw-deleted-while-editing'>\n$1\n</div>",
1788                                         'deletedwhileediting' );
1789                         }
1790                 }
1791
1792                 $wgOut->addHTML( Html::openElement( 'form', array( 'id' => self::EDITFORM_ID, 'name' => self::EDITFORM_ID,
1793                         'method' => 'post', 'action' => $this->getActionURL( $this->getContextTitle() ),
1794                         'enctype' => 'multipart/form-data' ) ) );
1795
1796                 if ( is_callable( $formCallback ) ) {
1797                         call_user_func_array( $formCallback, array( &$wgOut ) );
1798                 }
1799
1800                 wfRunHooks( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );
1801
1802                 // Put these up at the top to ensure they aren't lost on early form submission
1803                 $this->showFormBeforeText();
1804
1805                 if ( $this->wasDeletedSinceLastEdit() && 'save' == $this->formtype ) {
1806                         $username = $this->lastDelete->user_name;
1807                         $comment = $this->lastDelete->log_comment;
1808
1809                         // It is better to not parse the comment at all than to have templates expanded in the middle
1810                         // TODO: can the checkLabel be moved outside of the div so that wrapWikiMsg could be used?
1811                         $key = $comment === ''
1812                                 ? 'confirmrecreate-noreason'
1813                                 : 'confirmrecreate';
1814                         $wgOut->addHTML(
1815                                 '<div class="mw-confirm-recreate">' .
1816                                 wfMsgExt( $key, 'parseinline', $username, "<nowiki>$comment</nowiki>" ) .
1817                                 Xml::checkLabel( wfMsg( 'recreate' ), 'wpRecreate', 'wpRecreate', false,
1818                                         array( 'title' => Linker::titleAttrib( 'recreate' ), 'tabindex' => 1, 'id' => 'wpRecreate' )
1819                                 ) .
1820                                 '</div>'
1821                         );
1822                 }
1823
1824                 # When the summary is hidden, also hide them on preview/show changes
1825                 if( $this->nosummary ) {
1826                         $wgOut->addHTML( Html::hidden( 'nosummary', true ) );
1827                 }
1828
1829                 # If a blank edit summary was previously provided, and the appropriate
1830                 # user preference is active, pass a hidden tag as wpIgnoreBlankSummary. This will stop the
1831                 # user being bounced back more than once in the event that a summary
1832                 # is not required.
1833                 #####
1834                 # For a bit more sophisticated detection of blank summaries, hash the
1835                 # automatic one and pass that in the hidden field wpAutoSummary.
1836                 if ( $this->missingSummary || ( $this->section == 'new' && $this->nosummary ) ) {
1837                         $wgOut->addHTML( Html::hidden( 'wpIgnoreBlankSummary', true ) );
1838                 }
1839
1840                 if ( $this->undidRev ) {
1841                         $wgOut->addHTML( Html::hidden( 'wpUndidRevision', $this->undidRev ) );
1842                 }
1843
1844                 if ( $this->hasPresetSummary ) {
1845                         // If a summary has been preset using &summary= we dont want to prompt for
1846                         // a different summary. Only prompt for a summary if the summary is blanked.
1847                         // (Bug 17416)
1848                         $this->autoSumm = md5( '' );
1849                 }
1850
1851                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
1852                 $wgOut->addHTML( Html::hidden( 'wpAutoSummary', $autosumm ) );
1853
1854                 $wgOut->addHTML( Html::hidden( 'oldid', $this->oldid ) );
1855
1856                 if ( $this->section == 'new' ) {
1857                         $this->showSummaryInput( true, $this->summary );
1858                         $wgOut->addHTML( $this->getSummaryPreview( true, $this->summary ) );
1859                 }
1860
1861                 $wgOut->addHTML( $this->editFormTextBeforeContent );
1862
1863                 if ( !$this->isCssJsSubpage && $showToolbar && $wgUser->getOption( 'showtoolbar' ) ) {
1864                         $wgOut->addHTML( EditPage::getEditToolbar() );
1865                 }
1866
1867                 if ( $this->isConflict ) {
1868                         // In an edit conflict bypass the overrideable content form method
1869                         // and fallback to the raw wpTextbox1 since editconflicts can't be
1870                         // resolved between page source edits and custom ui edits using the
1871                         // custom edit ui.
1872                         $this->textbox2 = $this->textbox1;
1873                         $this->textbox1 = $this->getCurrentText();
1874
1875                         $this->showTextbox1();
1876                 } else {
1877                         $this->showContentForm();
1878                 }
1879
1880                 $wgOut->addHTML( $this->editFormTextAfterContent );
1881
1882                 $wgOut->addWikiText( $this->getCopywarn() );
1883
1884                 $wgOut->addHTML( $this->editFormTextAfterWarn );
1885
1886                 $this->showStandardInputs();
1887
1888                 $this->showFormAfterText();
1889
1890                 $this->showTosSummary();
1891
1892                 $this->showEditTools();
1893
1894                 $wgOut->addHTML( $this->editFormTextAfterTools . "\n" );
1895
1896                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'templatesUsed' ),
1897                         Linker::formatTemplates( $this->getTemplates(), $this->preview, $this->section != '' ) ) );
1898
1899                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'hiddencats' ),
1900                         Linker::formatHiddenCategories( $this->mArticle->getHiddenCategories() ) ) );
1901
1902                 if ( $this->isConflict ) {
1903                         $this->showConflict();
1904                 }
1905
1906                 $wgOut->addHTML( $this->editFormTextBottom . "\n</form>\n" );
1907
1908                 if ( !$wgUser->getOption( 'previewontop' ) ) {
1909                         $this->displayPreviewArea( $previewOutput, false );
1910                 }
1911
1912                 wfProfileOut( __METHOD__ );
1913         }
1914
1915         /**
1916          * Extract the section title from current section text, if any.
1917          *
1918          * @param string $text
1919          * @return Mixed|string or false
1920          */
1921         public static function extractSectionTitle( $text ) {
1922                 preg_match( "/^(=+)(.+)\\1\\s*(\n|$)/i", $text, $matches );
1923                 if ( !empty( $matches[2] ) ) {
1924                         global $wgParser;
1925                         return $wgParser->stripSectionName( trim( $matches[2] ) );
1926                 } else {
1927                         return false;
1928                 }
1929         }
1930
1931         protected function showHeader() {
1932                 global $wgOut, $wgUser, $wgMaxArticleSize, $wgLang;
1933
1934                 if ( $this->mTitle->isTalkPage() ) {
1935                         $wgOut->addWikiMsg( 'talkpagetext' );
1936                 }
1937
1938                 # Optional notices on a per-namespace and per-page basis
1939                 $editnotice_ns = 'editnotice-' . $this->mTitle->getNamespace();
1940                 $editnotice_ns_message = wfMessage( $editnotice_ns );
1941                 if ( $editnotice_ns_message->exists() ) {
1942                         $wgOut->addWikiText( $editnotice_ns_message->plain() );
1943                 }
1944                 if ( MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
1945                         $parts = explode( '/', $this->mTitle->getDBkey() );
1946                         $editnotice_base = $editnotice_ns;
1947                         while ( count( $parts ) > 0 ) {
1948                                 $editnotice_base .= '-' . array_shift( $parts );
1949                                 $editnotice_base_msg = wfMessage( $editnotice_base );
1950                                 if ( $editnotice_base_msg->exists() ) {
1951                                         $wgOut->addWikiText( $editnotice_base_msg->plain() );
1952                                 }
1953                         }
1954                 } else {
1955                         # Even if there are no subpages in namespace, we still don't want / in MW ns.
1956                         $editnoticeText = $editnotice_ns . '-' . str_replace( '/', '-', $this->mTitle->getDBkey() );
1957                         $editnoticeMsg = wfMessage( $editnoticeText );
1958                         if ( $editnoticeMsg->exists() ) {
1959                                 $wgOut->addWikiText( $editnoticeMsg->plain() );
1960                         }
1961                 }
1962
1963                 if ( $this->isConflict ) {
1964                         $wgOut->wrapWikiMsg( "<div class='mw-explainconflict'>\n$1\n</div>", 'explainconflict' );
1965                         $this->edittime = $this->mArticle->getTimestamp();
1966                 } else {
1967                         if ( $this->section != '' && !$this->isSectionEditSupported() ) {
1968                                 // We use $this->section to much before this and getVal('wgSection') directly in other places
1969                                 // at this point we can't reset $this->section to '' to fallback to non-section editing.
1970                                 // Someone is welcome to try refactoring though
1971                                 $wgOut->showErrorPage( 'sectioneditnotsupported-title', 'sectioneditnotsupported-text' );
1972                                 return false;
1973                         }
1974
1975                         if ( $this->section != '' && $this->section != 'new' ) {
1976                                 if ( !$this->summary && !$this->preview && !$this->diff ) {
1977                                         $sectionTitle = self::extractSectionTitle( $this->textbox1 );
1978                                         if ( $sectionTitle !== false ) {
1979                                                 $this->summary = "/* $sectionTitle */ ";
1980                                         }
1981                                 }
1982                         }
1983
1984                         if ( $this->missingComment ) {
1985                                 $wgOut->wrapWikiMsg( "<div id='mw-missingcommenttext'>\n$1\n</div>", 'missingcommenttext' );
1986                         }
1987
1988                         if ( $this->missingSummary && $this->section != 'new' ) {
1989                                 $wgOut->wrapWikiMsg( "<div id='mw-missingsummary'>\n$1\n</div>", 'missingsummary' );
1990                         }
1991
1992                         if ( $this->missingSummary && $this->section == 'new' ) {
1993                                 $wgOut->wrapWikiMsg( "<div id='mw-missingcommentheader'>\n$1\n</div>", 'missingcommentheader' );
1994                         }
1995
1996                         if ( $this->hookError !== '' ) {
1997                                 $wgOut->addWikiText( $this->hookError );
1998                         }
1999
2000                         if ( !$this->checkUnicodeCompliantBrowser() ) {
2001                                 $wgOut->addWikiMsg( 'nonunicodebrowser' );
2002                         }
2003
2004                         if ( $this->section != 'new' ) {
2005                                 $revision = $this->mArticle->getRevisionFetched();
2006                                 if ( $revision ) {
2007                                         // Let sysop know that this will make private content public if saved
2008
2009                                         if ( !$revision->userCan( Revision::DELETED_TEXT ) ) {
2010                                                 $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n", 'rev-deleted-text-permission' );
2011                                         } elseif ( $revision->isDeleted( Revision::DELETED_TEXT ) ) {
2012                                                 $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n", 'rev-deleted-text-view' );
2013                                         }
2014
2015                                         if ( !$revision->isCurrent() ) {
2016                                                 $this->mArticle->setOldSubtitle( $revision->getId() );
2017                                                 $wgOut->addWikiMsg( 'editingold' );
2018                                         }
2019                                 } elseif ( $this->mTitle->exists() ) {
2020                                         // Something went wrong
2021
2022                                         $wgOut->wrapWikiMsg( "<div class='errorbox'>\n$1\n</div>\n",
2023                                                 array( 'missing-revision', $this->oldid ) );
2024                                 }
2025                         }
2026                 }
2027
2028                 if ( wfReadOnly() ) {
2029                         $wgOut->wrapWikiMsg( "<div id=\"mw-read-only-warning\">\n$1\n</div>", array( 'readonlywarning', wfReadOnlyReason() ) );
2030                 } elseif ( $wgUser->isAnon() ) {
2031                         if ( $this->formtype != 'preview' ) {
2032                                 $wgOut->wrapWikiMsg( "<div id=\"mw-anon-edit-warning\">\n$1</div>", 'anoneditwarning' );
2033                         } else {
2034                                 $wgOut->wrapWikiMsg( "<div id=\"mw-anon-preview-warning\">\n$1</div>", 'anonpreviewwarning' );
2035                         }
2036                 } else {
2037                         if ( $this->isCssJsSubpage ) {
2038                                 # Check the skin exists
2039                                 if ( $this->isWrongCaseCssJsPage ) {
2040                                         $wgOut->wrapWikiMsg( "<div class='error' id='mw-userinvalidcssjstitle'>\n$1\n</div>", array( 'userinvalidcssjstitle', $this->mTitle->getSkinFromCssJsSubpage() ) );
2041                                 }
2042                                 if ( $this->formtype !== 'preview' ) {
2043                                         if ( $this->isCssSubpage )
2044                                                 $wgOut->wrapWikiMsg( "<div id='mw-usercssyoucanpreview'>\n$1\n</div>", array( 'usercssyoucanpreview' ) );
2045                                         if ( $this->isJsSubpage )
2046                                                 $wgOut->wrapWikiMsg( "<div id='mw-userjsyoucanpreview'>\n$1\n</div>", array( 'userjsyoucanpreview' ) );
2047                                 }
2048                         }
2049                 }
2050
2051                 if ( $this->mTitle->getNamespace() != NS_MEDIAWIKI && $this->mTitle->isProtected( 'edit' ) ) {
2052                         # Is the title semi-protected?
2053                         if ( $this->mTitle->isSemiProtected() ) {
2054                                 $noticeMsg = 'semiprotectedpagewarning';
2055                         } else {
2056                                 # Then it must be protected based on static groups (regular)
2057                                 $noticeMsg = 'protectedpagewarning';
2058                         }
2059                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle, '',
2060                                 array( 'lim' => 1, 'msgKey' => array( $noticeMsg ) ) );
2061                 }
2062                 if ( $this->mTitle->isCascadeProtected() ) {
2063                         # Is this page under cascading protection from some source pages?
2064                         list( $cascadeSources, /* $restrictions */ ) = $this->mTitle->getCascadeProtectionSources();
2065                         $notice = "<div class='mw-cascadeprotectedwarning'>\n$1\n";
2066                         $cascadeSourcesCount = count( $cascadeSources );
2067                         if ( $cascadeSourcesCount > 0 ) {
2068                                 # Explain, and list the titles responsible
2069                                 foreach ( $cascadeSources as $page ) {
2070                                         $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
2071                                 }
2072                         }
2073                         $notice .= '</div>';
2074                         $wgOut->wrapWikiMsg( $notice, array( 'cascadeprotectedwarning', $cascadeSourcesCount ) );
2075                 }
2076                 if ( !$this->mTitle->exists() && $this->mTitle->getRestrictions( 'create' ) ) {
2077                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle, '',
2078                                 array( 'lim' => 1,
2079                                         'showIfEmpty' => false,
2080                                         'msgKey' => array( 'titleprotectedwarning' ),
2081                                         'wrap' => "<div class=\"mw-titleprotectedwarning\">\n$1</div>" ) );
2082                 }
2083
2084                 if ( $this->kblength === false ) {
2085                         $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
2086                 }
2087
2088                 if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
2089                         $wgOut->wrapWikiMsg( "<div class='error' id='mw-edit-longpageerror'>\n$1\n</div>",
2090                                 array( 'longpageerror', $wgLang->formatNum( $this->kblength ), $wgLang->formatNum( $wgMaxArticleSize ) ) );
2091                 } else {
2092                         if ( !wfMessage( 'longpage-hint' )->isDisabled() ) {
2093                                 $wgOut->wrapWikiMsg( "<div id='mw-edit-longpage-hint'>\n$1\n</div>",
2094                                         array( 'longpage-hint', $wgLang->formatSize( strlen( $this->textbox1 ) ), strlen( $this->textbox1 ) )
2095                                 );
2096                         }
2097                 }
2098         }
2099
2100         /**
2101          * Standard summary input and label (wgSummary), abstracted so EditPage
2102          * subclasses may reorganize the form.
2103          * Note that you do not need to worry about the label's for=, it will be
2104          * inferred by the id given to the input. You can remove them both by
2105          * passing array( 'id' => false ) to $userInputAttrs.
2106          *
2107          * @param $summary string The value of the summary input
2108          * @param $labelText string The html to place inside the label
2109          * @param $inputAttrs array of attrs to use on the input
2110          * @param $spanLabelAttrs array of attrs to use on the span inside the label
2111          *
2112          * @return array An array in the format array( $label, $input )
2113          */
2114         function getSummaryInput( $summary = "", $labelText = null, $inputAttrs = null, $spanLabelAttrs = null ) {
2115                 // Note: the maxlength is overriden in JS to 255 and to make it use UTF-8 bytes, not characters.
2116                 $inputAttrs = ( is_array( $inputAttrs ) ? $inputAttrs : array() ) + array(
2117                         'id' => 'wpSummary',
2118                         'maxlength' => '200',
2119                         'tabindex' => '1',
2120                         'size' => 60,
2121                         'spellcheck' => 'true',
2122                 ) + Linker::tooltipAndAccesskeyAttribs( 'summary' );
2123
2124                 $spanLabelAttrs = ( is_array( $spanLabelAttrs ) ? $spanLabelAttrs : array() ) + array(
2125                         'class' => $this->missingSummary ? 'mw-summarymissed' : 'mw-summary',
2126                         'id' => "wpSummaryLabel"
2127                 );
2128
2129                 $label = null;
2130                 if ( $labelText ) {
2131                         $label = Xml::tags( 'label', $inputAttrs['id'] ? array( 'for' => $inputAttrs['id'] ) : null, $labelText );
2132                         $label = Xml::tags( 'span', $spanLabelAttrs, $label );
2133                 }
2134
2135                 $input = Html::input( 'wpSummary', $summary, 'text', $inputAttrs );
2136
2137                 return array( $label, $input );
2138         }
2139
2140         /**
2141          * @param $isSubjectPreview Boolean: true if this is the section subject/title
2142          *                          up top, or false if this is the comment summary
2143          *                          down below the textarea
2144          * @param $summary String: The text of the summary to display
2145          * @return String
2146          */
2147         protected function showSummaryInput( $isSubjectPreview, $summary = "" ) {
2148                 global $wgOut, $wgContLang;
2149                 # Add a class if 'missingsummary' is triggered to allow styling of the summary line
2150                 $summaryClass = $this->missingSummary ? 'mw-summarymissed' : 'mw-summary';
2151                 if ( $isSubjectPreview ) {
2152                         if ( $this->nosummary ) {
2153                                 return;
2154                         }
2155                 } else {
2156                         if ( !$this->mShowSummaryField ) {
2157                                 return;
2158                         }
2159                 }
2160                 $summary = $wgContLang->recodeForEdit( $summary );
2161                 $labelText = wfMsgExt( $isSubjectPreview ? 'subject' : 'summary', 'parseinline' );
2162                 list( $label, $input ) = $this->getSummaryInput( $summary, $labelText, array( 'class' => $summaryClass ), array() );
2163                 $wgOut->addHTML( "{$label} {$input}" );
2164         }
2165
2166         /**
2167          * @param $isSubjectPreview Boolean: true if this is the section subject/title
2168          *                          up top, or false if this is the comment summary
2169          *                          down below the textarea
2170          * @param $summary String: the text of the summary to display
2171          * @return String
2172          */
2173         protected function getSummaryPreview( $isSubjectPreview, $summary = "" ) {
2174                 if ( !$summary || ( !$this->preview && !$this->diff ) )
2175                         return "";
2176
2177                 global $wgParser;
2178
2179                 if ( $isSubjectPreview )
2180                         $summary = wfMsgForContent( 'newsectionsummary', $wgParser->stripSectionName( $summary ) );
2181
2182                 $message = $isSubjectPreview ? 'subject-preview' : 'summary-preview';
2183
2184                 $summary = wfMsgExt( $message, 'parseinline' ) . Linker::commentBlock( $summary, $this->mTitle, $isSubjectPreview );
2185                 return Xml::tags( 'div', array( 'class' => 'mw-summary-preview' ), $summary );
2186         }
2187
2188         protected function showFormBeforeText() {
2189                 global $wgOut;
2190                 $section = htmlspecialchars( $this->section );
2191                 $wgOut->addHTML( <<<HTML
2192 <input type='hidden' value="{$section}" name="wpSection" />
2193 <input type='hidden' value="{$this->starttime}" name="wpStarttime" />
2194 <input type='hidden' value="{$this->edittime}" name="wpEdittime" />
2195 <input type='hidden' value="{$this->scrolltop}" name="wpScrolltop" id="wpScrolltop" />
2196
2197 HTML
2198                 );
2199                 if ( !$this->checkUnicodeCompliantBrowser() )
2200                         $wgOut->addHTML( Html::hidden( 'safemode', '1' ) );
2201         }
2202
2203         protected function showFormAfterText() {
2204                 global $wgOut, $wgUser;
2205                 /**
2206                  * To make it harder for someone to slip a user a page
2207                  * which submits an edit form to the wiki without their
2208                  * knowledge, a random token is associated with the login
2209                  * session. If it's not passed back with the submission,
2210                  * we won't save the page, or render user JavaScript and
2211                  * CSS previews.
2212                  *
2213                  * For anon editors, who may not have a session, we just
2214                  * include the constant suffix to prevent editing from
2215                  * broken text-mangling proxies.
2216                  */
2217                 $wgOut->addHTML( "\n" . Html::hidden( "wpEditToken", $wgUser->getEditToken() ) . "\n" );
2218         }
2219
2220         /**
2221          * Subpage overridable method for printing the form for page content editing
2222          * By default this simply outputs wpTextbox1
2223          * Subclasses can override this to provide a custom UI for editing;
2224          * be it a form, or simply wpTextbox1 with a modified content that will be
2225          * reverse modified when extracted from the post data.
2226          * Note that this is basically the inverse for importContentFormData
2227          */
2228         protected function showContentForm() {
2229                 $this->showTextbox1();
2230         }
2231
2232         /**
2233          * Method to output wpTextbox1
2234          * The $textoverride method can be used by subclasses overriding showContentForm
2235          * to pass back to this method.
2236          *
2237          * @param $customAttribs array of html attributes to use in the textarea
2238          * @param $textoverride String: optional text to override $this->textarea1 with
2239          */
2240         protected function showTextbox1( $customAttribs = null, $textoverride = null ) {
2241                 if ( $this->wasDeletedSinceLastEdit() && $this->formtype == 'save' ) {
2242                         $attribs = array( 'style' => 'display:none;' );
2243                 } else {
2244                         $classes = array(); // Textarea CSS
2245                         if ( $this->mTitle->getNamespace() != NS_MEDIAWIKI && $this->mTitle->isProtected( 'edit' ) ) {
2246                                 # Is the title semi-protected?
2247                                 if ( $this->mTitle->isSemiProtected() ) {
2248                                         $classes[] = 'mw-textarea-sprotected';
2249                                 } else {
2250                                         # Then it must be protected based on static groups (regular)
2251                                         $classes[] = 'mw-textarea-protected';
2252                                 }
2253                                 # Is the title cascade-protected?
2254                                 if ( $this->mTitle->isCascadeProtected() ) {
2255                                         $classes[] = 'mw-textarea-cprotected';
2256                                 }
2257                         }
2258
2259                         $attribs = array( 'tabindex' => 1 );
2260
2261                         if ( is_array( $customAttribs ) ) {
2262                                 $attribs += $customAttribs;
2263                         }
2264
2265                         if ( count( $classes ) ) {
2266                                 if ( isset( $attribs['class'] ) ) {
2267                                         $classes[] = $attribs['class'];
2268                                 }
2269                                 $attribs['class'] = implode( ' ', $classes );
2270                         }
2271                 }
2272
2273                 $this->showTextbox( $textoverride !== null ? $textoverride : $this->textbox1, 'wpTextbox1', $attribs );
2274         }
2275
2276         protected function showTextbox2() {
2277                 $this->showTextbox( $this->textbox2, 'wpTextbox2', array( 'tabindex' => 6, 'readonly' ) );
2278         }
2279
2280         protected function showTextbox( $content, $name, $customAttribs = array() ) {
2281                 global $wgOut, $wgUser;
2282
2283                 $wikitext = $this->safeUnicodeOutput( $content );
2284                 if ( strval( $wikitext ) !== '' ) {
2285                         // Ensure there's a newline at the end, otherwise adding lines
2286                         // is awkward.
2287                         // But don't add a newline if the ext is empty, or Firefox in XHTML
2288                         // mode will show an extra newline. A bit annoying.
2289                         $wikitext .= "\n";
2290                 }
2291
2292                 $attribs = $customAttribs + array(
2293                         'accesskey' => ',',
2294                         'id'   => $name,
2295                         'cols' => $wgUser->getIntOption( 'cols' ),
2296                         'rows' => $wgUser->getIntOption( 'rows' ),
2297                         'style' => '' // avoid php notices when appending preferences (appending allows customAttribs['style'] to still work
2298                 );
2299
2300                 $pageLang = $this->mTitle->getPageLanguage();
2301                 $attribs['lang'] = $pageLang->getCode();
2302                 $attribs['dir'] = $pageLang->getDir();
2303
2304                 $wgOut->addHTML( Html::textarea( $name, $wikitext, $attribs ) );
2305         }
2306
2307         protected function displayPreviewArea( $previewOutput, $isOnTop = false ) {
2308                 global $wgOut;
2309                 $classes = array();
2310                 if ( $isOnTop )
2311                         $classes[] = 'ontop';
2312
2313                 $attribs = array( 'id' => 'wikiPreview', 'class' => implode( ' ', $classes ) );
2314
2315                 if ( $this->formtype != 'preview' )
2316                         $attribs['style'] = 'display: none;';
2317
2318                 $wgOut->addHTML( Xml::openElement( 'div', $attribs ) );
2319
2320                 if ( $this->formtype == 'preview' ) {
2321                         $this->showPreview( $previewOutput );
2322                 }
2323
2324                 $wgOut->addHTML( '</div>' );
2325
2326                 if ( $this->formtype == 'diff' ) {
2327                         $this->showDiff();
2328                 }
2329         }
2330
2331         /**
2332          * Append preview output to $wgOut.
2333          * Includes category rendering if this is a category page.
2334          *
2335          * @param $text String: the HTML to be output for the preview.
2336          */
2337         protected function showPreview( $text ) {
2338                 global $wgOut;
2339                 if ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
2340                         $this->mArticle->openShowCategory();
2341                 }
2342                 # This hook seems slightly odd here, but makes things more
2343                 # consistent for extensions.
2344                 wfRunHooks( 'OutputPageBeforeHTML', array( &$wgOut, &$text ) );
2345                 $wgOut->addHTML( $text );
2346                 if ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
2347                         $this->mArticle->closeShowCategory();
2348                 }
2349         }
2350
2351         /**
2352          * Get a diff between the current contents of the edit box and the
2353          * version of the page we're editing from.
2354          *
2355          * If this is a section edit, we'll replace the section as for final
2356          * save and then make a comparison.
2357          */
2358         function showDiff() {
2359                 global $wgUser, $wgContLang, $wgParser, $wgOut;
2360
2361                 $oldtitlemsg = 'currentrev';
2362                 # if message does not exist, show diff against the preloaded default
2363                 if( $this->mTitle->getNamespace() == NS_MEDIAWIKI && !$this->mTitle->exists() ) {
2364                         $oldtext = $this->mTitle->getDefaultMessageText();
2365                         if( $oldtext !== false ) {
2366                                 $oldtitlemsg = 'defaultmessagetext';
2367                         }
2368                 } else {
2369                         $oldtext = $this->mArticle->getRawText();
2370                 }
2371                 $newtext = $this->mArticle->replaceSection(
2372                         $this->section, $this->textbox1, $this->summary, $this->edittime );
2373
2374                 wfRunHooks( 'EditPageGetDiffText', array( $this, &$newtext ) );
2375
2376                 $popts = ParserOptions::newFromUserAndLang( $wgUser, $wgContLang );
2377                 $newtext = $wgParser->preSaveTransform( $newtext, $this->mTitle, $wgUser, $popts );
2378
2379                 if ( $oldtext !== false  || $newtext != '' ) {
2380                         $oldtitle = wfMsgExt( $oldtitlemsg, array( 'parseinline' ) );
2381                         $newtitle = wfMsgExt( 'yourtext', array( 'parseinline' ) );
2382
2383                         $de = new DifferenceEngine( $this->mArticle->getContext() );
2384                         $de->setText( $oldtext, $newtext );
2385                         $difftext = $de->getDiff( $oldtitle, $newtitle );
2386                         $de->showDiffStyle();
2387                 } else {
2388                         $difftext = '';
2389                 }
2390
2391                 $wgOut->addHTML( '<div id="wikiDiff">' . $difftext . '</div>' );
2392         }
2393
2394         /**
2395          * Give a chance for site and per-namespace customizations of
2396          * terms of service summary link that might exist separately
2397          * from the copyright notice.
2398          *
2399          * This will display between the save button and the edit tools,
2400          * so should remain short!
2401          */
2402         protected function showTosSummary() {
2403                 $msg = 'editpage-tos-summary';
2404                 wfRunHooks( 'EditPageTosSummary', array( $this->mTitle, &$msg ) );
2405                 if ( !wfMessage( $msg )->isDisabled() ) {
2406                         global $wgOut;
2407                         $wgOut->addHTML( '<div class="mw-tos-summary">' );
2408                         $wgOut->addWikiMsg( $msg );
2409                         $wgOut->addHTML( '</div>' );
2410                 }
2411         }
2412
2413         protected function showEditTools() {
2414                 global $wgOut;
2415                 $wgOut->addHTML( '<div class="mw-editTools">' .
2416                         wfMessage( 'edittools' )->inContentLanguage()->parse() .
2417                         '</div>' );
2418         }
2419
2420         /**
2421          * Get the copyright warning
2422          *
2423          * Renamed to getCopyrightWarning(), old name kept around for backwards compatibility
2424          */
2425         protected function getCopywarn() {
2426                 return self::getCopyrightWarning( $this->mTitle );
2427         }
2428
2429         public static function getCopyrightWarning( $title ) {
2430                 global $wgRightsText;
2431                 if ( $wgRightsText ) {
2432                         $copywarnMsg = array( 'copyrightwarning',
2433                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
2434                                 $wgRightsText );
2435                 } else {
2436                         $copywarnMsg = array( 'copyrightwarning2',
2437                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]' );
2438                 }
2439                 // Allow for site and per-namespace customization of contribution/copyright notice.
2440                 wfRunHooks( 'EditPageCopyrightWarning', array( $title, &$copywarnMsg ) );
2441
2442                 return "<div id=\"editpage-copywarn\">\n" .
2443                         call_user_func_array( "wfMsgNoTrans", $copywarnMsg ) . "\n</div>";
2444         }
2445
2446         protected function showStandardInputs( &$tabindex = 2 ) {
2447                 global $wgOut;
2448                 $wgOut->addHTML( "<div class='editOptions'>\n" );
2449
2450                 if ( $this->section != 'new' ) {
2451                         $this->showSummaryInput( false, $this->summary );
2452                         $wgOut->addHTML( $this->getSummaryPreview( false, $this->summary ) );
2453                 }
2454
2455                 $checkboxes = $this->getCheckboxes( $tabindex,
2456                         array( 'minor' => $this->minoredit, 'watch' => $this->watchthis ) );
2457                 $wgOut->addHTML( "<div class='editCheckboxes'>" . implode( $checkboxes, "\n" ) . "</div>\n" );
2458                 $wgOut->addHTML( "<div class='editButtons'>\n" );
2459                 $wgOut->addHTML( implode( $this->getEditButtons( $tabindex ), "\n" ) . "\n" );
2460
2461                 $cancel = $this->getCancelLink();
2462                 if ( $cancel !== '' ) {
2463                         $cancel .= wfMsgExt( 'pipe-separator' , 'escapenoentities' );
2464                 }
2465                 $edithelpurl = Skin::makeInternalOrExternalUrl( wfMsgForContent( 'edithelppage' ) );
2466                 $edithelp = '<a target="helpwindow" href="' . $edithelpurl . '">' .
2467                         htmlspecialchars( wfMsg( 'edithelp' ) ) . '</a> ' .
2468                         htmlspecialchars( wfMsg( 'newwindow' ) );
2469                 $wgOut->addHTML( "      <span class='editHelp'>{$cancel}{$edithelp}</span>\n" );
2470                 $wgOut->addHTML( "</div><!-- editButtons -->\n</div><!-- editOptions -->\n" );
2471         }
2472
2473         /**
2474          * Show an edit conflict. textbox1 is already shown in showEditForm().
2475          * If you want to use another entry point to this function, be careful.
2476          */
2477         protected function showConflict() {
2478                 global $wgOut;
2479
2480                 if ( wfRunHooks( 'EditPageBeforeConflictDiff', array( &$this, &$wgOut ) ) ) {
2481                         $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
2482
2483                         $de = new DifferenceEngine( $this->mArticle->getContext() );
2484                         $de->setText( $this->textbox2, $this->textbox1 );
2485                         $de->showDiff( wfMsgExt( 'yourtext', 'parseinline' ), wfMsg( 'storedversion' ) );
2486
2487                         $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
2488                         $this->showTextbox2();
2489                 }
2490         }
2491
2492         /**
2493          * @return string
2494          */
2495         public function getCancelLink() {
2496                 $cancelParams = array();
2497                 if ( !$this->isConflict && $this->oldid > 0 ) {
2498                         $cancelParams['oldid'] = $this->oldid;
2499                 }
2500
2501                 return Linker::linkKnown(
2502                         $this->getContextTitle(),
2503                         wfMsgExt( 'cancel', array( 'parseinline' ) ),
2504                         array( 'id' => 'mw-editform-cancel' ),
2505                         $cancelParams
2506                 );
2507         }
2508
2509         /**
2510          * Returns the URL to use in the form's action attribute.
2511          * This is used by EditPage subclasses when simply customizing the action
2512          * variable in the constructor is not enough. This can be used when the
2513          * EditPage lives inside of a Special page rather than a custom page action.
2514          *
2515          * @param $title Title object for which is being edited (where we go to for &action= links)
2516          * @return string
2517          */
2518         protected function getActionURL( Title $title ) {
2519                 return $title->getLocalURL( array( 'action' => $this->action ) );
2520         }
2521
2522         /**
2523          * Check if a page was deleted while the user was editing it, before submit.
2524          * Note that we rely on the logging table, which hasn't been always there,
2525          * but that doesn't matter, because this only applies to brand new
2526          * deletes.
2527          */
2528         protected function wasDeletedSinceLastEdit() {
2529                 if ( $this->deletedSinceEdit !== null ) {
2530                         return $this->deletedSinceEdit;
2531                 }
2532
2533                 $this->deletedSinceEdit = false;
2534
2535                 if ( $this->mTitle->isDeletedQuick() ) {
2536                         $this->lastDelete = $this->getLastDelete();
2537                         if ( $this->lastDelete ) {
2538                                 $deleteTime = wfTimestamp( TS_MW, $this->lastDelete->log_timestamp );
2539                                 if ( $deleteTime > $this->starttime ) {
2540                                         $this->deletedSinceEdit = true;
2541                                 }
2542                         }
2543                 }
2544
2545                 return $this->deletedSinceEdit;
2546         }
2547
2548         protected function getLastDelete() {
2549                 $dbr = wfGetDB( DB_SLAVE );
2550                 $data = $dbr->selectRow(
2551                         array( 'logging', 'user' ),
2552                         array( 'log_type',
2553                                    'log_action',
2554                                    'log_timestamp',
2555                                    'log_user',
2556                                    'log_namespace',
2557                                    'log_title',
2558                                    'log_comment',
2559                                    'log_params',
2560                                    'log_deleted',
2561                                    'user_name' ),
2562                         array( 'log_namespace' => $this->mTitle->getNamespace(),
2563                                    'log_title' => $this->mTitle->getDBkey(),
2564                                    'log_type' => 'delete',
2565                                    'log_action' => 'delete',
2566                                    'user_id=log_user' ),
2567                         __METHOD__,
2568                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' )
2569                 );
2570                 // Quick paranoid permission checks...
2571                 if ( is_object( $data ) ) {
2572                         if ( $data->log_deleted & LogPage::DELETED_USER )
2573                                 $data->user_name = wfMsgHtml( 'rev-deleted-user' );
2574                         if ( $data->log_deleted & LogPage::DELETED_COMMENT )
2575                                 $data->log_comment = wfMsgHtml( 'rev-deleted-comment' );
2576                 }
2577                 return $data;
2578         }
2579
2580         /**
2581          * Get the rendered text for previewing.
2582          * @return string
2583          */
2584         function getPreviewText() {
2585                 global $wgOut, $wgUser, $wgParser, $wgRawHtml, $wgLang;
2586
2587                 wfProfileIn( __METHOD__ );
2588
2589                 if ( $wgRawHtml && !$this->mTokenOk ) {
2590                         // Could be an offsite preview attempt. This is very unsafe if
2591                         // HTML is enabled, as it could be an attack.
2592                         $parsedNote = '';
2593                         if ( $this->textbox1 !== '' ) {
2594                                 // Do not put big scary notice, if previewing the empty
2595                                 // string, which happens when you initially edit
2596                                 // a category page, due to automatic preview-on-open.
2597                                 $parsedNote = $wgOut->parse( "<div class='previewnote'>" .
2598                                         wfMsg( 'session_fail_preview_html' ) . "</div>", true, /* interface */true );
2599                         }
2600                         wfProfileOut( __METHOD__ );
2601                         return $parsedNote;
2602                 }
2603
2604                 if ( $this->mTriedSave && !$this->mTokenOk ) {
2605                         if ( $this->mTokenOkExceptSuffix ) {
2606                                 $note = wfMsg( 'token_suffix_mismatch' );
2607                         } else {
2608                                 $note = wfMsg( 'session_fail_preview' );
2609                         }
2610                 } elseif ( $this->incompleteForm ) {
2611                         $note = wfMsg( 'edit_form_incomplete' );
2612                 } else {
2613                         $note = wfMsg( 'previewnote' ) .
2614                                 ' [[#' . self::EDITFORM_ID . '|' . $wgLang->getArrow() . ' ' . wfMsg( 'continue-editing' ) . ']]';
2615                 }
2616
2617                 $parserOptions = ParserOptions::newFromUser( $wgUser );
2618                 $parserOptions->setEditSection( false );
2619                 $parserOptions->setTidy( true );
2620                 $parserOptions->setIsPreview( true );
2621                 $parserOptions->setIsSectionPreview( !is_null( $this->section ) && $this->section !== '' );
2622
2623                 # don't parse non-wikitext pages, show message about preview
2624                 if ( $this->mTitle->isCssJsSubpage() || !$this->mTitle->isWikitextPage() ) {
2625                         if ( $this->mTitle->isCssJsSubpage() ) {
2626                                 $level = 'user';
2627                         } elseif ( $this->mTitle->isCssOrJsPage() ) {
2628                                 $level = 'site';
2629                         } else {
2630                                 $level = false;
2631                         }
2632
2633                         # Used messages to make sure grep find them:
2634                         # Messages: usercsspreview, userjspreview, sitecsspreview, sitejspreview
2635                         $class = 'mw-code';
2636                         if ( $level ) {
2637                                 if ( preg_match( "/\\.css$/", $this->mTitle->getText() ) ) {
2638                                         $previewtext = "<div id='mw-{$level}csspreview'>\n" . wfMsg( "{$level}csspreview" ) . "\n</div>";
2639                                         $class .= " mw-css";
2640                                 } elseif ( preg_match( "/\\.js$/", $this->mTitle->getText() ) ) {
2641                                         $previewtext = "<div id='mw-{$level}jspreview'>\n" . wfMsg( "{$level}jspreview" ) . "\n</div>";
2642                                         $class .= " mw-js";
2643                                 } else {
2644                                         throw new MWException( 'A CSS/JS (sub)page but which is not css nor js!' );
2645                                 }
2646                                 $parserOutput = $wgParser->parse( $previewtext, $this->mTitle, $parserOptions );
2647                                 $previewHTML = $parserOutput->getText();
2648                         } else {
2649                                 $previewHTML = '';
2650                         }
2651
2652                         $previewHTML .= "<pre class=\"$class\" dir=\"ltr\">\n" . htmlspecialchars( $this->textbox1 ) . "\n</pre>\n";
2653                 } else {
2654                         $toparse = $this->textbox1;
2655
2656                         # If we're adding a comment, we need to show the
2657                         # summary as the headline
2658                         if ( $this->section == "new" && $this->summary != "" ) {
2659                                 $toparse = wfMsgForContent( 'newsectionheaderdefaultlevel', $this->summary ) . "\n\n" . $toparse;
2660                         }
2661
2662                         wfRunHooks( 'EditPageGetPreviewText', array( $this, &$toparse ) );
2663
2664                         $parserOptions->enableLimitReport();
2665
2666                         $toparse = $wgParser->preSaveTransform( $toparse, $this->mTitle, $wgUser, $parserOptions );
2667                         $parserOutput = $wgParser->parse( $toparse, $this->mTitle, $parserOptions );
2668
2669                         $rt = Title::newFromRedirectArray( $this->textbox1 );
2670                         if ( $rt ) {
2671                                 $previewHTML = $this->mArticle->viewRedirect( $rt, false );
2672                         } else {
2673                                 $previewHTML = $parserOutput->getText();
2674                         }
2675
2676                         $this->mParserOutput = $parserOutput;
2677                         $wgOut->addParserOutputNoText( $parserOutput );
2678
2679                         if ( count( $parserOutput->getWarnings() ) ) {
2680                                 $note .= "\n\n" . implode( "\n\n", $parserOutput->getWarnings() );
2681                         }
2682                 }
2683
2684                 if ( $this->isConflict ) {
2685                         $conflict = '<h2 id="mw-previewconflict">' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
2686                 } else {
2687                         $conflict = '<hr />';
2688                 }
2689
2690                 $previewhead = "<div class='previewnote'>\n" .
2691                         '<h2 id="mw-previewheader">' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>" .
2692                         $wgOut->parse( $note, true, /* interface */true ) . $conflict . "</div>\n";
2693
2694                 $pageLang = $this->mTitle->getPageLanguage();
2695                 $attribs = array( 'lang' => $pageLang->getCode(), 'dir' => $pageLang->getDir(),
2696                         'class' => 'mw-content-' . $pageLang->getDir() );
2697                 $previewHTML = Html::rawElement( 'div', $attribs, $previewHTML );
2698
2699                 wfProfileOut( __METHOD__ );
2700                 return $previewhead . $previewHTML . $this->previewTextAfterContent;
2701         }
2702
2703         /**
2704          * @return Array
2705          */
2706         function getTemplates() {
2707                 if ( $this->preview || $this->section != '' ) {
2708                         $templates = array();
2709                         if ( !isset( $this->mParserOutput ) ) {
2710                                 return $templates;
2711                         }
2712                         foreach ( $this->mParserOutput->getTemplates() as $ns => $template ) {
2713                                 foreach ( array_keys( $template ) as $dbk ) {
2714                                         $templates[] = Title::makeTitle( $ns, $dbk );
2715                                 }
2716                         }
2717                         return $templates;
2718                 } else {
2719                         return $this->mTitle->getTemplateLinksFrom();
2720                 }
2721         }
2722
2723         /**
2724          * Shows a bulletin board style toolbar for common editing functions.
2725          * It can be disabled in the user preferences.
2726          * The necessary JavaScript code can be found in skins/common/edit.js.
2727          *
2728          * @return string
2729          */
2730         static function getEditToolbar() {
2731                 global $wgStylePath, $wgContLang, $wgLang, $wgOut;
2732                 global $wgUseTeX, $wgEnableUploads, $wgForeignFileRepos;
2733
2734                 $imagesAvailable = $wgEnableUploads || count( $wgForeignFileRepos );
2735
2736                 /**
2737                  * $toolarray is an array of arrays each of which includes the
2738                  * filename of the button image (without path), the opening
2739                  * tag, the closing tag, optionally a sample text that is
2740                  * inserted between the two when no selection is highlighted
2741                  * and.  The tip text is shown when the user moves the mouse
2742                  * over the button.
2743                  *
2744                  * Also here: accesskeys (key), which are not used yet until
2745                  * someone can figure out a way to make them work in
2746                  * IE. However, we should make sure these keys are not defined
2747                  * on the edit page.
2748                  */
2749                 $toolarray = array(
2750                         array(
2751                                 'image'  => $wgLang->getImageFile( 'button-bold' ),
2752                                 'id'     => 'mw-editbutton-bold',
2753                                 'open'   => '\'\'\'',
2754                                 'close'  => '\'\'\'',
2755                                 'sample' => wfMsg( 'bold_sample' ),
2756                                 'tip'    => wfMsg( 'bold_tip' ),
2757                                 'key'    => 'B'
2758                         ),
2759                         array(
2760                                 'image'  => $wgLang->getImageFile( 'button-italic' ),
2761                                 'id'     => 'mw-editbutton-italic',
2762                                 'open'   => '\'\'',
2763                                 'close'  => '\'\'',
2764                                 'sample' => wfMsg( 'italic_sample' ),
2765                                 'tip'    => wfMsg( 'italic_tip' ),
2766                                 'key'    => 'I'
2767                         ),
2768                         array(
2769                                 'image'  => $wgLang->getImageFile( 'button-link' ),
2770                                 'id'     => 'mw-editbutton-link',
2771                                 'open'   => '[[',
2772                                 'close'  => ']]',
2773                                 'sample' => wfMsg( 'link_sample' ),
2774                                 'tip'    => wfMsg( 'link_tip' ),
2775                                 'key'    => 'L'
2776                         ),
2777                         array(
2778                                 'image'  => $wgLang->getImageFile( 'button-extlink' ),
2779                                 'id'     => 'mw-editbutton-extlink',
2780                                 'open'   => '[',
2781                                 'close'  => ']',
2782                                 'sample' => wfMsg( 'extlink_sample' ),
2783                                 'tip'    => wfMsg( 'extlink_tip' ),
2784                                 'key'    => 'X'
2785                         ),
2786                         array(
2787                                 'image'  => $wgLang->getImageFile( 'button-headline' ),
2788                                 'id'     => 'mw-editbutton-headline',
2789                                 'open'   => "\n== ",
2790                                 'close'  => " ==\n",
2791                                 'sample' => wfMsg( 'headline_sample' ),
2792                                 'tip'    => wfMsg( 'headline_tip' ),
2793                                 'key'    => 'H'
2794                         ),
2795                         $imagesAvailable ? array(
2796                                 'image'  => $wgLang->getImageFile( 'button-image' ),
2797                                 'id'     => 'mw-editbutton-image',
2798                                 'open'   => '[[' . $wgContLang->getNsText( NS_FILE ) . ':',
2799                                 'close'  => ']]',
2800                                 'sample' => wfMsg( 'image_sample' ),
2801                                 'tip'    => wfMsg( 'image_tip' ),
2802                                 'key'    => 'D',
2803                         ) : false,
2804                         $imagesAvailable ? array(
2805                                 'image'  => $wgLang->getImageFile( 'button-media' ),
2806                                 'id'     => 'mw-editbutton-media',
2807                                 'open'   => '[[' . $wgContLang->getNsText( NS_MEDIA ) . ':',
2808                                 'close'  => ']]',
2809                                 'sample' => wfMsg( 'media_sample' ),
2810                                 'tip'    => wfMsg( 'media_tip' ),
2811                                 'key'    => 'M'
2812                         ) : false,
2813                         $wgUseTeX ? array(
2814                                 'image'  => $wgLang->getImageFile( 'button-math' ),
2815                                 'id'     => 'mw-editbutton-math',
2816                                 'open'   => "<math>",
2817                                 'close'  => "</math>",
2818                                 'sample' => wfMsg( 'math_sample' ),
2819                                 'tip'    => wfMsg( 'math_tip' ),
2820                                 'key'    => 'C'
2821                         ) : false,
2822                         array(
2823                                 'image'  => $wgLang->getImageFile( 'button-nowiki' ),
2824                                 'id'     => 'mw-editbutton-nowiki',
2825                                 'open'   => "<nowiki>",
2826                                 'close'  => "</nowiki>",
2827                                 'sample' => wfMsg( 'nowiki_sample' ),
2828                                 'tip'    => wfMsg( 'nowiki_tip' ),
2829                                 'key'    => 'N'
2830                         ),
2831                         array(
2832                                 'image'  => $wgLang->getImageFile( 'button-sig' ),
2833                                 'id'     => 'mw-editbutton-signature',
2834                                 'open'   => '--~~~~',
2835                                 'close'  => '',
2836                                 'sample' => '',
2837                                 'tip'    => wfMsg( 'sig_tip' ),
2838                                 'key'    => 'Y'
2839                         ),
2840                         array(
2841                                 'image'  => $wgLang->getImageFile( 'button-hr' ),
2842                                 'id'     => 'mw-editbutton-hr',
2843                                 'open'   => "\n----\n",
2844                                 'close'  => '',
2845                                 'sample' => '',
2846                                 'tip'    => wfMsg( 'hr_tip' ),
2847                                 'key'    => 'R'
2848                         )
2849                 );
2850
2851                 $script = 'mw.loader.using("mediawiki.action.edit", function() {';
2852                 foreach ( $toolarray as $tool ) {
2853                         if ( !$tool ) {
2854                                 continue;
2855                         }
2856
2857                         $params = array(
2858                                 $image = $wgStylePath . '/common/images/' . $tool['image'],
2859                                 // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
2860                                 // Older browsers show a "speedtip" type message only for ALT.
2861                                 // Ideally these should be different, realistically they
2862                                 // probably don't need to be.
2863                                 $tip = $tool['tip'],
2864                                 $open = $tool['open'],
2865                                 $close = $tool['close'],
2866                                 $sample = $tool['sample'],
2867                                 $cssId = $tool['id'],
2868                         );
2869
2870                         $script .= Xml::encodeJsCall( 'mw.toolbar.addButton', $params );
2871                 }
2872
2873                 // This used to be called on DOMReady from mediawiki.action.edit, which
2874                 // ended up causing race conditions with the setup code above.
2875                 $script .= "\n" .
2876                         "// Create button bar\n" .
2877                         "$(function() { mw.toolbar.init(); } );\n";
2878
2879                 $script .= '});';
2880                 $wgOut->addScript( Html::inlineScript( ResourceLoader::makeLoaderConditionalScript( $script ) ) );
2881
2882                 $toolbar = '<div id="toolbar"></div>';
2883
2884                 wfRunHooks( 'EditPageBeforeEditToolbar', array( &$toolbar ) );
2885
2886                 return $toolbar;
2887         }
2888
2889         /**
2890          * Returns an array of html code of the following checkboxes:
2891          * minor and watch
2892          *
2893          * @param $tabindex int Current tabindex
2894          * @param $checked Array of checkbox => bool, where bool indicates the checked
2895          *                 status of the checkbox
2896          *
2897          * @return array
2898          */
2899         public function getCheckboxes( &$tabindex, $checked ) {
2900                 global $wgUser;
2901
2902                 $checkboxes = array();
2903
2904                 // don't show the minor edit checkbox if it's a new page or section
2905                 if ( !$this->isNew ) {
2906                         $checkboxes['minor'] = '';
2907                         $minorLabel = wfMsgExt( 'minoredit', array( 'parseinline' ) );
2908                         if ( $wgUser->isAllowed( 'minoredit' ) ) {
2909                                 $attribs = array(
2910                                         'tabindex'  => ++$tabindex,
2911                                         'accesskey' => wfMsg( 'accesskey-minoredit' ),
2912                                         'id'        => 'wpMinoredit',
2913                                 );
2914                                 $checkboxes['minor'] =
2915                                         Xml::check( 'wpMinoredit', $checked['minor'], $attribs ) .
2916                                         "&#160;<label for='wpMinoredit' id='mw-editpage-minoredit'" .
2917                                         Xml::expandAttributes( array( 'title' => Linker::titleAttrib( 'minoredit', 'withaccess' ) ) ) .
2918                                         ">{$minorLabel}</label>";
2919                         }
2920                 }
2921
2922                 $watchLabel = wfMsgExt( 'watchthis', array( 'parseinline' ) );
2923                 $checkboxes['watch'] = '';
2924                 if ( $wgUser->isLoggedIn() ) {
2925                         $attribs = array(
2926                                 'tabindex'  => ++$tabindex,
2927                                 'accesskey' => wfMsg( 'accesskey-watch' ),
2928                                 'id'        => 'wpWatchthis',
2929                         );
2930                         $checkboxes['watch'] =
2931                                 Xml::check( 'wpWatchthis', $checked['watch'], $attribs ) .
2932                                 "&#160;<label for='wpWatchthis' id='mw-editpage-watch'" .
2933                                 Xml::expandAttributes( array( 'title' => Linker::titleAttrib( 'watch', 'withaccess' ) ) ) .
2934                                 ">{$watchLabel}</label>";
2935                 }
2936                 wfRunHooks( 'EditPageBeforeEditChecks', array( &$this, &$checkboxes, &$tabindex ) );
2937                 return $checkboxes;
2938         }
2939
2940         /**
2941          * Returns an array of html code of the following buttons:
2942          * save, diff, preview and live
2943          *
2944          * @param $tabindex int Current tabindex
2945          *
2946          * @return array
2947          */
2948         public function getEditButtons( &$tabindex ) {
2949                 $buttons = array();
2950
2951                 $temp = array(
2952                         'id'        => 'wpSave',
2953                         'name'      => 'wpSave',
2954                         'type'      => 'submit',
2955                         'tabindex'  => ++$tabindex,
2956                         'value'     => wfMsg( 'savearticle' ),
2957                         'accesskey' => wfMsg( 'accesskey-save' ),
2958                         'title'     => wfMsg( 'tooltip-save' ) . ' [' . wfMsg( 'accesskey-save' ) . ']',
2959                 );
2960                 $buttons['save'] = Xml::element( 'input', $temp, '' );
2961
2962                 ++$tabindex; // use the same for preview and live preview
2963                 $temp = array(
2964                         'id'        => 'wpPreview',
2965                         'name'      => 'wpPreview',
2966                         'type'      => 'submit',
2967                         'tabindex'  => $tabindex,
2968                         'value'     => wfMsg( 'showpreview' ),
2969                         'accesskey' => wfMsg( 'accesskey-preview' ),
2970                         'title'     => wfMsg( 'tooltip-preview' ) . ' [' . wfMsg( 'accesskey-preview' ) . ']',
2971                 );
2972                 $buttons['preview'] = Xml::element( 'input', $temp, '' );
2973                 $buttons['live'] = '';
2974
2975                 $temp = array(
2976                         'id'        => 'wpDiff',
2977                         'name'      => 'wpDiff',
2978                         'type'      => 'submit',
2979                         'tabindex'  => ++$tabindex,
2980                         'value'     => wfMsg( 'showdiff' ),
2981                         'accesskey' => wfMsg( 'accesskey-diff' ),
2982                         'title'     => wfMsg( 'tooltip-diff' ) . ' [' . wfMsg( 'accesskey-diff' ) . ']',
2983                 );
2984                 $buttons['diff'] = Xml::element( 'input', $temp, '' );
2985
2986                 wfRunHooks( 'EditPageBeforeEditButtons', array( &$this, &$buttons, &$tabindex ) );
2987                 return $buttons;
2988         }
2989
2990         /**
2991          * Output preview text only. This can be sucked into the edit page
2992          * via JavaScript, and saves the server time rendering the skin as
2993          * well as theoretically being more robust on the client (doesn't
2994          * disturb the edit box's undo history, won't eat your text on
2995          * failure, etc).
2996          *
2997          * @todo This doesn't include category or interlanguage links.
2998          *       Would need to enhance it a bit, "<s>maybe wrap them in XML
2999          *       or something...</s>" that might also require more skin
3000          *       initialization, so check whether that's a problem.
3001          */
3002         function livePreview() {
3003                 global $wgOut;
3004                 $wgOut->disable();
3005                 header( 'Content-type: text/xml; charset=utf-8' );
3006                 header( 'Cache-control: no-cache' );
3007
3008                 $previewText = $this->getPreviewText();
3009                 #$categories = $skin->getCategoryLinks();
3010
3011                 $s =
3012                 '<?xml version="1.0" encoding="UTF-8" ?>' . "\n" .
3013                 Xml::tags( 'livepreview', null,
3014                         Xml::element( 'preview', null, $previewText )
3015                         #.      Xml::element( 'category', null, $categories )
3016                 );
3017                 echo $s;
3018         }
3019
3020         /**
3021          * Call the stock "user is blocked" page
3022          *
3023          * @deprecated in 1.19; throw an exception directly instead
3024          */
3025         function blockedPage() {
3026                 wfDeprecated( __METHOD__, '1.19' );
3027                 global $wgUser;
3028
3029                 throw new UserBlockedError( $wgUser->getBlock() );
3030         }
3031
3032         /**
3033          * Produce the stock "please login to edit pages" page
3034          *
3035          * @deprecated in 1.19; throw an exception directly instead
3036          */
3037         function userNotLoggedInPage() {
3038                 wfDeprecated( __METHOD__, '1.19' );
3039                 throw new PermissionsError( 'edit' );
3040         }
3041
3042         /**
3043          * Show an error page saying to the user that he has insufficient permissions
3044          * to create a new page
3045          *
3046          * @deprecated in 1.19; throw an exception directly instead
3047          */
3048         function noCreatePermission() {
3049                 wfDeprecated( __METHOD__, '1.19' );
3050                 $permission = $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage';
3051                 throw new PermissionsError( $permission );
3052         }
3053
3054         /**
3055          * Creates a basic error page which informs the user that
3056          * they have attempted to edit a nonexistent section.
3057          */
3058         function noSuchSectionPage() {
3059                 global $wgOut;
3060
3061                 $wgOut->prepareErrorPage( wfMessage( 'nosuchsectiontitle' ) );
3062
3063                 $res = wfMsgExt( 'nosuchsectiontext', 'parse', $this->section );
3064                 wfRunHooks( 'EditPageNoSuchSection', array( &$this, &$res ) );
3065                 $wgOut->addHTML( $res );
3066
3067                 $wgOut->returnToMain( false, $this->mTitle );
3068         }
3069
3070         /**
3071          * Produce the stock "your edit contains spam" page
3072          *
3073          * @param $match string Text which triggered one or more filters
3074          * @deprecated since 1.17 Use method spamPageWithContent() instead
3075          */
3076         static function spamPage( $match = false ) {
3077                 wfDeprecated( __METHOD__, '1.17' );
3078
3079                 global $wgOut, $wgTitle;
3080
3081                 $wgOut->prepareErrorPage( wfMessage( 'spamprotectiontitle' ) );
3082
3083                 $wgOut->addHTML( '<div id="spamprotected">' );
3084                 $wgOut->addWikiMsg( 'spamprotectiontext' );
3085                 if ( $match ) {
3086                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
3087                 }
3088                 $wgOut->addHTML( '</div>' );
3089
3090                 $wgOut->returnToMain( false, $wgTitle );
3091         }
3092
3093         /**
3094          * Show "your edit contains spam" page with your diff and text
3095          *
3096          * @param $match string|Array|bool Text (or array of texts) which triggered one or more filters
3097          */
3098         public function spamPageWithContent( $match = false ) {
3099                 global $wgOut, $wgLang;
3100                 $this->textbox2 = $this->textbox1;
3101
3102                 if( is_array( $match ) ){
3103                         $match = $wgLang->listToText( $match );
3104                 }
3105                 $wgOut->prepareErrorPage( wfMessage( 'spamprotectiontitle' ) );
3106
3107                 $wgOut->addHTML( '<div id="spamprotected">' );
3108                 $wgOut->addWikiMsg( 'spamprotectiontext' );
3109                 if ( $match ) {
3110                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
3111                 }
3112                 $wgOut->addHTML( '</div>' );
3113
3114                 $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
3115                 $this->showDiff();
3116
3117                 $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
3118                 $this->showTextbox2();
3119
3120                 $wgOut->addReturnTo( $this->getContextTitle(), array( 'action' => 'edit' ) );
3121         }
3122
3123         /**
3124          * Format an anchor fragment as it would appear for a given section name
3125          * @param $text String
3126          * @return String
3127          * @private
3128          */
3129         function sectionAnchor( $text ) {
3130                 global $wgParser;
3131                 return $wgParser->guessSectionNameFromWikiText( $text );
3132         }
3133
3134         /**
3135          * Check if the browser is on a blacklist of user-agents known to
3136          * mangle UTF-8 data on form submission. Returns true if Unicode
3137          * should make it through, false if it's known to be a problem.
3138          * @return bool
3139          * @private
3140          */
3141         function checkUnicodeCompliantBrowser() {
3142                 global $wgBrowserBlackList, $wgRequest;
3143
3144                 $currentbrowser = $wgRequest->getHeader( 'User-Agent' );
3145                 if ( $currentbrowser === false ) {
3146                         // No User-Agent header sent? Trust it by default...
3147                         return true;
3148                 }
3149
3150                 foreach ( $wgBrowserBlackList as $browser ) {
3151                         if ( preg_match( $browser, $currentbrowser ) ) {
3152                                 return false;
3153                         }
3154                 }
3155                 return true;
3156         }
3157
3158         /**
3159          * Filter an input field through a Unicode de-armoring process if it
3160          * came from an old browser with known broken Unicode editing issues.
3161          *
3162          * @param $request WebRequest
3163          * @param $field String
3164          * @return String
3165          * @private
3166          */
3167         function safeUnicodeInput( $request, $field ) {
3168                 $text = rtrim( $request->getText( $field ) );
3169                 return $request->getBool( 'safemode' )
3170                         ? $this->unmakesafe( $text )
3171                         : $text;
3172         }
3173
3174         /**
3175          * @param $request WebRequest
3176          * @param $text string
3177          * @return string
3178          */
3179         function safeUnicodeText( $request, $text ) {
3180                 $text = rtrim( $text );
3181                 return $request->getBool( 'safemode' )
3182                         ? $this->unmakesafe( $text )
3183                         : $text;
3184         }
3185
3186         /**
3187          * Filter an output field through a Unicode armoring process if it is
3188          * going to an old browser with known broken Unicode editing issues.
3189          *
3190          * @param $text String
3191          * @return String
3192          * @private
3193          */
3194         function safeUnicodeOutput( $text ) {
3195                 global $wgContLang;
3196                 $codedText = $wgContLang->recodeForEdit( $text );
3197                 return $this->checkUnicodeCompliantBrowser()
3198                         ? $codedText
3199                         : $this->makesafe( $codedText );
3200         }
3201
3202         /**
3203          * A number of web browsers are known to corrupt non-ASCII characters
3204          * in a UTF-8 text editing environment. To protect against this,
3205          * detected browsers will be served an armored version of the text,
3206          * with non-ASCII chars converted to numeric HTML character references.
3207          *
3208          * Preexisting such character references will have a 0 added to them
3209          * to ensure that round-trips do not alter the original data.
3210          *
3211          * @param $invalue String
3212          * @return String
3213          * @private
3214          */
3215         function makesafe( $invalue ) {
3216                 // Armor existing references for reversability.
3217                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
3218
3219                 $bytesleft = 0;
3220                 $result = "";
3221                 $working = 0;
3222                 for ( $i = 0; $i < strlen( $invalue ); $i++ ) {
3223                         $bytevalue = ord( $invalue[$i] );
3224                         if ( $bytevalue <= 0x7F ) { // 0xxx xxxx
3225                                 $result .= chr( $bytevalue );
3226                                 $bytesleft = 0;
3227                         } elseif ( $bytevalue <= 0xBF ) { // 10xx xxxx
3228                                 $working = $working << 6;
3229                                 $working += ( $bytevalue & 0x3F );
3230                                 $bytesleft--;
3231                                 if ( $bytesleft <= 0 ) {
3232                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
3233                                 }
3234                         } elseif ( $bytevalue <= 0xDF ) { // 110x xxxx
3235                                 $working = $bytevalue & 0x1F;
3236                                 $bytesleft = 1;
3237                         } elseif ( $bytevalue <= 0xEF ) { // 1110 xxxx
3238                                 $working = $bytevalue & 0x0F;
3239                                 $bytesleft = 2;
3240                         } else { // 1111 0xxx
3241                                 $working = $bytevalue & 0x07;
3242                                 $bytesleft = 3;
3243                         }
3244                 }
3245                 return $result;
3246         }
3247
3248         /**
3249          * Reverse the previously applied transliteration of non-ASCII characters
3250          * back to UTF-8. Used to protect data from corruption by broken web browsers
3251          * as listed in $wgBrowserBlackList.
3252          *
3253          * @param $invalue String
3254          * @return String
3255          * @private
3256          */
3257         function unmakesafe( $invalue ) {
3258                 $result = "";
3259                 for ( $i = 0; $i < strlen( $invalue ); $i++ ) {
3260                         if ( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue[$i + 3] != '0' ) ) {
3261                                 $i += 3;
3262                                 $hexstring = "";
3263                                 do {
3264                                         $hexstring .= $invalue[$i];
3265                                         $i++;
3266                                 } while ( ctype_xdigit( $invalue[$i] ) && ( $i < strlen( $invalue ) ) );
3267
3268                                 // Do some sanity checks. These aren't needed for reversability,
3269                                 // but should help keep the breakage down if the editor
3270                                 // breaks one of the entities whilst editing.
3271                                 if ( ( substr( $invalue, $i, 1 ) == ";" ) and ( strlen( $hexstring ) <= 6 ) ) {
3272                                         $codepoint = hexdec( $hexstring );
3273                                         $result .= codepointToUtf8( $codepoint );
3274                                 } else {
3275                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
3276                                 }
3277                         } else {
3278                                 $result .= substr( $invalue, $i, 1 );
3279                         }
3280                 }
3281                 // reverse the transform that we made for reversability reasons.
3282                 return strtr( $result, array( "&#x0" => "&#x" ) );
3283         }
3284 }