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