includes/EditPage.php

   1 <?php
   2 /**
   3  * Contains the EditPage class
   4  * @file
   5  */
   6
   7 /**
   8  * The edit page/HTML interface (split from Article)
   9  * The actual database and text munging is still in Article,
  10  * but it should get easier to call those from alternate
  11  * interfaces.
  12  *
  13  * EditPage cares about two distinct titles:
  14  * $this->mContextTitle is the page that forms submit to, links point to,
  15  * redirects go to, etc. $this->mTitle (as well as $mArticle) is the
  16  * page in the database that is actually being edited. These are
  17  * usually the same, but they are now allowed to be different.
  18  *
  19  * Surgeon General's Warning: prolonged exposure to this class is known to cause
  20  * headaches, which may be fatal.
  21  */
  22 class EditPage {
  23         const AS_SUCCESS_UPDATE            = 200;
  24         const AS_SUCCESS_NEW_ARTICLE       = 201;
  25         const AS_HOOK_ERROR                = 210;
  26         const AS_FILTERING                 = 211;
  27         const AS_HOOK_ERROR_EXPECTED       = 212;
  28         const AS_BLOCKED_PAGE_FOR_USER     = 215;
  29         const AS_CONTENT_TOO_BIG           = 216;
  30         const AS_USER_CANNOT_EDIT          = 217;
  31         const AS_READ_ONLY_PAGE_ANON       = 218;
  32         const AS_READ_ONLY_PAGE_LOGGED     = 219;
  33         const AS_READ_ONLY_PAGE            = 220;
  34         const AS_RATE_LIMITED              = 221;
  35         const AS_ARTICLE_WAS_DELETED       = 222;
  36         const AS_NO_CREATE_PERMISSION      = 223;
  37         const AS_BLANK_ARTICLE             = 224;
  38         const AS_CONFLICT_DETECTED         = 225;
  39         const AS_SUMMARY_NEEDED            = 226;
  40         const AS_TEXTBOX_EMPTY             = 228;
  41         const AS_MAX_ARTICLE_SIZE_EXCEEDED = 229;
  42         const AS_OK                        = 230;
  43         const AS_END                       = 231;
  44         const AS_SPAM_ERROR                = 232;
  45         const AS_IMAGE_REDIRECT_ANON       = 233;
  46         const AS_IMAGE_REDIRECT_LOGGED     = 234;
  47
  48         /**
  49          * @var Article
  50          */
  51         var $mArticle;
  52
  53         /**
  54          * @var Title
  55          */
  56         var $mTitle;
  57         private $mContextTitle = null;
  58         var $action = 'submit';
  59         var $isConflict = false;
  60         var $isCssJsSubpage = false;
  61         var $isCssSubpage = false;
  62         var $isJsSubpage = false;
  63         var $isWrongCaseCssJsPage = false;
  64         var $isNew = false; // new page or new section
  65         var $deletedSinceEdit;
  66         var $formtype;
  67         var $firsttime;
  68         var $lastDelete;
  69         var $mTokenOk = false;
  70         var $mTokenOkExceptSuffix = false;
  71         var $mTriedSave = false;
  72         var $incompleteForm = false;
  73         var $tooBig = false;
  74         var $kblength = false;
  75         var $missingComment = false;
  76         var $missingSummary = false;
  77         var $allowBlankSummary = false;
  78         var $autoSumm = '';
  79         var $hookError = '';
  80         #var $mPreviewTemplates;
  81
  82         /**
  83          * @var ParserOutput
  84          */
  85         var $mParserOutput;
  86
  87         var $mBaseRevision = false;
  88         var $mShowSummaryField = true;
  89
  90         # Form values
  91         var $save = false, $preview = false, $diff = false;
  92         var $minoredit = false, $watchthis = false, $recreate = false;
  93         var $textbox1 = '', $textbox2 = '', $summary = '', $nosummary = false;
  94         var $edittime = '', $section = '', $sectiontitle = '', $starttime = '';
  95         var $oldid = 0, $editintro = '', $scrolltop = null, $bot = true;
  96
  97         # Placeholders for text injection by hooks (must be HTML)
  98         # extensions should take care to _append_ to the present value
  99         public $editFormPageTop = ''; // Before even the preview
 100         public $editFormTextTop = '';
 101         public $editFormTextBeforeContent = '';
 102         public $editFormTextAfterWarn = '';
 103         public $editFormTextAfterTools = '';
 104         public $editFormTextBottom = '';
 105         public $editFormTextAfterContent = '';
 106         public $previewTextAfterContent = '';
 107         public $mPreloadText = '';
 108
 109         /* $didSave should be set to true whenever an article was succesfully altered. */
 110         public $didSave = false;
 111         public $undidRev = 0;
 112
 113         public $suppressIntro = false;
 114
 115         /**
 116          * @param $article Article
 117          */
 118         public function __construct( Article $article ) {
 119                 $this->mArticle = $article;
 120                 $this->mTitle = $article->getTitle();
 121         }
 122
 123         /**
 124          * @return Article
 125          */
 126         public function getArticle() {
 127                 return $this->mArticle;
 128         }
 129
 130         /**
 131          * @since 1.19
 132          * @return Title
 133          */
 134         public function getTitle() {
 135                 return $this->mTitle;
 136         }
 137
 138         /**
 139          * Set the context Title object
 140          *
 141          * @param $title Title object or null
 142          */
 143         public function setContextTitle( $title ) {
 144                 $this->mContextTitle = $title;
 145         }
 146
 147         /**
 148          * Get the context title object.
 149          * If not set, $wgTitle will be returned. This behavior might changed in
 150          * the future to return $this->mTitle instead.
 151          *
 152          * @return Title object
 153          */
 154         public function getContextTitle() {
 155                 if ( is_null( $this->mContextTitle ) ) {
 156                         global $wgTitle;
 157                         return $wgTitle;
 158                 } else {
 159                         return $this->mContextTitle;
 160                 }
 161         }
 162
 163         function submit() {
 164                 $this->edit();
 165         }
 166
 167         /**
 168          * This is the function that gets called for "action=edit". It
 169          * sets up various member variables, then passes execution to
 170          * another function, usually showEditForm()
 171          *
 172          * The edit form is self-submitting, so that when things like
 173          * preview and edit conflicts occur, we get the same form back
 174          * with the extra stuff added.  Only when the final submission
 175          * is made and all is well do we actually save and redirect to
 176          * the newly-edited page.
 177          */
 178         function edit() {
 179                 global $wgOut, $wgRequest, $wgUser;
 180                 // Allow extensions to modify/prevent this form or submission
 181                 if ( !wfRunHooks( 'AlternateEdit', array( $this ) ) ) {
 182                         return;
 183                 }
 184
 185                 wfProfileIn( __METHOD__ );
 186                 wfDebug( __METHOD__.": enter\n" );
 187
 188                 // If they used redlink=1 and the page exists, redirect to the main article
 189                 if ( $wgRequest->getBool( 'redlink' ) && $this->mTitle->exists() ) {
 190                         $wgOut->redirect( $this->mTitle->getFullURL() );
 191                         wfProfileOut( __METHOD__ );
 192                         return;
 193                 }
 194
 195                 $this->importFormData( $wgRequest );
 196                 $this->firsttime = false;
 197
 198                 if ( $this->live ) {
 199                         $this->livePreview();
 200                         wfProfileOut( __METHOD__ );
 201                         return;
 202                 }
 203
 204                 if ( wfReadOnly() && $this->save ) {
 205                         // Force preview
 206                         $this->save = false;
 207                         $this->preview = true;
 208                 }
 209
 210                 if ( $this->save ) {
 211                         $this->formtype = 'save';
 212                 } elseif ( $this->preview ) {
 213                         $this->formtype = 'preview';
 214                 } elseif ( $this->diff ) {
 215                         $this->formtype = 'diff';
 216                 } else { # First time through
 217                         $this->firsttime = true;
 218                         if ( $this->previewOnOpen() ) {
 219                                 $this->formtype = 'preview';
 220                         } else {
 221                                 $this->formtype = 'initial';
 222                         }
 223                 }
 224
 225                 $permErrors = $this->getEditPermissionErrors();
 226                 if ( $permErrors ) {
 227                         wfDebug( __METHOD__ . ": User can't edit\n" );
 228                         // Auto-block user's IP if the account was "hard" blocked
 229                         $wgUser->spreadAnyEditBlock();
 230
 231                         $this->displayPermissionsError( $permErrors );
 232
 233                         wfProfileOut( __METHOD__ );
 234                         return;
 235                 }
 236
 237                 wfProfileIn( __METHOD__."-business-end" );
 238
 239                 $this->isConflict = false;
 240                 // css / js subpages of user pages get a special treatment
 241                 $this->isCssJsSubpage       = $this->mTitle->isCssJsSubpage();
 242                 $this->isCssSubpage         = $this->mTitle->isCssSubpage();
 243                 $this->isJsSubpage          = $this->mTitle->isJsSubpage();
 244                 $this->isWrongCaseCssJsPage = $this->isWrongCaseCssJsPage();
 245                 $this->isNew                = !$this->mTitle->exists() || $this->section == 'new';
 246
 247                 # Show applicable editing introductions
 248                 if ( $this->formtype == 'initial' || $this->firsttime ) {
 249                         $this->showIntro();
 250                 }
 251
 252                 # Attempt submission here.  This will check for edit conflicts,
 253                 # and redundantly check for locked database, blocked IPs, etc.
 254                 # that edit() already checked just in case someone tries to sneak
 255                 # in the back door with a hand-edited submission URL.
 256
 257                 if ( 'save' == $this->formtype ) {
 258                         if ( !$this->attemptSave() ) {
 259                                 wfProfileOut( __METHOD__."-business-end" );
 260                                 wfProfileOut( __METHOD__ );
 261                                 return;
 262                         }
 263                 }
 264
 265                 # First time through: get contents, set time for conflict
 266                 # checking, etc.
 267                 if ( 'initial' == $this->formtype || $this->firsttime ) {
 268                         if ( $this->initialiseForm() === false ) {
 269                                 $this->noSuchSectionPage();
 270                                 wfProfileOut( __METHOD__."-business-end" );
 271                                 wfProfileOut( __METHOD__ );
 272                                 return;
 273                         }
 274                         if ( !$this->mTitle->getArticleId() )
 275                                 wfRunHooks( 'EditFormPreloadText', array( &$this->textbox1, &$this->mTitle ) );
 276                         else
 277                                 wfRunHooks( 'EditFormInitialText', array( $this ) );
 278                 }
 279
 280                 $this->showEditForm();
 281                 wfProfileOut( __METHOD__."-business-end" );
 282                 wfProfileOut( __METHOD__ );
 283         }
 284
 285         /**
 286          * @return array
 287          */
 288         protected function getEditPermissionErrors() {
 289                 global $wgUser;
 290                 $permErrors = $this->mTitle->getUserPermissionsErrors( 'edit', $wgUser );
 291                 # Can this title be created?
 292                 if ( !$this->mTitle->exists() ) {
 293                         $permErrors = array_merge( $permErrors,
 294                                 wfArrayDiff2( $this->mTitle->getUserPermissionsErrors( 'create', $wgUser ), $permErrors ) );
 295                 }
 296                 # Ignore some permissions errors when a user is just previewing/viewing diffs
 297                 $remove = array();
 298                 foreach( $permErrors as $error ) {
 299                         if ( ( $this->preview || $this->diff ) &&
 300                                 ( $error[0] == 'blockedtext' || $error[0] == 'autoblockedtext' ) )
 301                         {
 302                                 $remove[] = $error;
 303                         }
 304                 }
 305                 $permErrors = wfArrayDiff2( $permErrors, $remove );
 306                 return $permErrors;
 307         }
 308
 309         /**
 310          * Display a permissions error page, like OutputPage::showPermissionsErrorPage(),
 311          * but with the following differences:
 312          * - If redlink=1, the user will be redirected to the page
 313          * - If there is content to display or the error occurs while either saving,
 314          *   previewing or showing the difference, it will be a
 315          *   "View source for ..." page displaying the source code after the error message.
 316          *
 317          * @since 1.19
 318          * @param $permErrors Array of permissions errors, as returned by
 319          *                    Title::getUserPermissionsErrors().
 320          */
 321         protected function displayPermissionsError( array $permErrors ) {
 322                 global $wgRequest, $wgOut;
 323
 324                 if ( $wgRequest->getBool( 'redlink' ) ) {
 325                         // The edit page was reached via a red link.
 326                         // Redirect to the article page and let them click the edit tab if
 327                         // they really want a permission error.
 328                         $wgOut->redirect( $this->mTitle->getFullUrl() );
 329                         return;
 330                 }
 331
 332                 $content = $this->getContent();
 333
 334                 # Use the normal message if there's nothing to display
 335                 if ( $this->firsttime && $content === '' ) {
 336                         $action = $this->mTitle->exists() ? 'edit' :
 337                                 ( $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage' );
 338                         throw new PermissionsError( $action, $permErrors );
 339                 }
 340
 341                 $wgOut->setPageTitle( wfMessage( 'viewsource-title', $this->getContextTitle()->getPrefixedText() ) );
 342                 $wgOut->addBacklinkSubtitle( $this->getContextTitle() );
 343                 $wgOut->addWikiText( $wgOut->formatPermissionsErrorMessage( $permErrors, 'edit' ) );
 344                 $wgOut->addHTML( "<hr />\n" );
 345
 346                 # If the user made changes, preserve them when showing the markup
 347                 # (This happens when a user is blocked during edit, for instance)
 348                 if ( !$this->firsttime ) {
 349                         $content = $this->textbox1;
 350                         $wgOut->addWikiMsg( 'viewyourtext' );
 351                 } else {
 352                         $wgOut->addWikiMsg( 'viewsourcetext' );
 353                 }
 354
 355                 $this->showTextbox( $content, 'wpTextbox1', array( 'readonly' ) );
 356
 357                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'templatesUsed' ),
 358                         Linker::formatTemplates( $this->getTemplates() ) ) );
 359
 360                 if ( $this->mTitle->exists() ) {
 361                         $wgOut->returnToMain( null, $this->mTitle );
 362                 }
 363         }
 364
 365         /**
 366          * Show a read-only error
 367          * Parameters are the same as OutputPage:readOnlyPage()
 368          * Redirect to the article page if redlink=1
 369          * @deprecated in 1.19; use displayPermissionsError() instead
 370          */
 371         function readOnlyPage( $source = null, $protected = false, $reasons = array(), $action = null ) {
 372                 wfDeprecated( __METHOD__, '1.19' );
 373
 374                 global $wgRequest, $wgOut;
 375                 if ( $wgRequest->getBool( 'redlink' ) ) {
 376                         // The edit page was reached via a red link.
 377                         // Redirect to the article page and let them click the edit tab if
 378                         // they really want a permission error.
 379                         $wgOut->redirect( $this->mTitle->getFullUrl() );
 380                 } else {
 381                         $wgOut->readOnlyPage( $source, $protected, $reasons, $action );
 382                 }
 383         }
 384
 385         /**
 386          * Should we show a preview when the edit form is first shown?
 387          *
 388          * @return bool
 389          */
 390         protected function previewOnOpen() {
 391                 global $wgRequest, $wgUser, $wgPreviewOnOpenNamespaces;
 392                 if ( $wgRequest->getVal( 'preview' ) == 'yes' ) {
 393                         // Explicit override from request
 394                         return true;
 395                 } elseif ( $wgRequest->getVal( 'preview' ) == 'no' ) {
 396                         // Explicit override from request
 397                         return false;
 398                 } elseif ( $this->section == 'new' ) {
 399                         // Nothing *to* preview for new sections
 400                         return false;
 401                 } elseif ( ( $wgRequest->getVal( 'preload' ) !== null || $this->mTitle->exists() ) && $wgUser->getOption( 'previewonfirst' ) ) {
 402                         // Standard preference behaviour
 403                         return true;
 404                 } elseif ( !$this->mTitle->exists() &&
 405                   isset($wgPreviewOnOpenNamespaces[$this->mTitle->getNamespace()]) &&
 406                   $wgPreviewOnOpenNamespaces[$this->mTitle->getNamespace()] )
 407                 {
 408                         // Categories are special
 409                         return true;
 410                 } else {
 411                         return false;
 412                 }
 413         }
 414
 415         /**
 416          * Checks whether the user entered a skin name in uppercase,
 417          * e.g. "User:Example/Monobook.css" instead of "monobook.css"
 418          *
 419          * @return bool
 420          */
 421         protected function isWrongCaseCssJsPage() {
 422                 if( $this->mTitle->isCssJsSubpage() ) {
 423                         $name = $this->mTitle->getSkinFromCssJsSubpage();
 424                         $skins = array_merge(
 425                                 array_keys( Skin::getSkinNames() ),
 426                                 array( 'common' )
 427                         );
 428                         return !in_array( $name, $skins )
 429                                 && in_array( strtolower( $name ), $skins );
 430                 } else {
 431                         return false;
 432                 }
 433         }
 434
 435         /**
 436          * Does this EditPage class support section editing?
 437          * This is used by EditPage subclasses to indicate their ui cannot handle section edits
 438          *
 439          * @return bool
 440          */
 441         protected function isSectionEditSupported() {
 442                 return true;
 443         }
 444
 445         /**
 446          * This function collects the form data and uses it to populate various member variables.
 447          * @param $request WebRequest
 448          */
 449         function importFormData( &$request ) {
 450                 global $wgLang, $wgUser;
 451
 452                 wfProfileIn( __METHOD__ );
 453
 454                 # Section edit can come from either the form or a link
 455                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 456
 457                 if ( $request->wasPosted() ) {
 458                         # These fields need to be checked for encoding.
 459                         # Also remove trailing whitespace, but don't remove _initial_
 460                         # whitespace from the text boxes. This may be significant formatting.
 461                         $this->textbox1 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
 462                         if ( !$request->getCheck('wpTextbox2') ) {
 463                                 // Skip this if wpTextbox2 has input, it indicates that we came
 464                                 // from a conflict page with raw page text, not a custom form
 465                                 // modified by subclasses
 466                                 wfProfileIn( get_class($this)."::importContentFormData" );
 467                                 $textbox1 = $this->importContentFormData( $request );
 468                                 if ( isset($textbox1) )
 469                                         $this->textbox1 = $textbox1;
 470                                 wfProfileOut( get_class($this)."::importContentFormData" );
 471                         }
 472
 473                         # Truncate for whole multibyte characters. +5 bytes for ellipsis
 474                         $this->summary = $wgLang->truncate( $request->getText( 'wpSummary' ), 250 );
 475
 476                         # If the summary consists of a heading, e.g. '==Foobar==', extract the title from the
 477                         # header syntax, e.g. 'Foobar'. This is mainly an issue when we are using wpSummary for
 478                         # section titles.
 479                         $this->summary = preg_replace( '/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->summary );
 480
 481                         # Treat sectiontitle the same way as summary.
 482                         # Note that wpSectionTitle is not yet a part of the actual edit form, as wpSummary is
 483                         # currently doing double duty as both edit summary and section title. Right now this
 484                         # is just to allow API edits to work around this limitation, but this should be
 485                         # incorporated into the actual edit form when EditPage is rewritten (Bugs 18654, 26312).
 486                         $this->sectiontitle = $wgLang->truncate( $request->getText( 'wpSectionTitle' ), 250 );
 487                         $this->sectiontitle = preg_replace( '/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->sectiontitle );
 488
 489                         $this->edittime = $request->getVal( 'wpEdittime' );
 490                         $this->starttime = $request->getVal( 'wpStarttime' );
 491
 492                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 493
 494                         if ( $this->textbox1 === '' && $request->getVal( 'wpTextbox1' ) === null ) {
 495                                 // wpTextbox1 field is missing, possibly due to being "too big"
 496                                 // according to some filter rules such as Suhosin's setting for
 497                                 // suhosin.request.max_value_length (d'oh)
 498                                 $this->incompleteForm = true;
 499                         } else {
 500                                 // edittime should be one of our last fields; if it's missing,
 501                                 // the submission probably broke somewhere in the middle.
 502                                 $this->incompleteForm = is_null( $this->edittime );
 503                         }
 504                         if ( $this->incompleteForm ) {
 505                                 # If the form is incomplete, force to preview.
 506                                 wfDebug( __METHOD__ . ": Form data appears to be incomplete\n" );
 507                                 wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
 508                                 $this->preview = true;
 509                         } else {
 510                                 /* Fallback for live preview */
 511                                 $this->preview = $request->getCheck( 'wpPreview' ) || $request->getCheck( 'wpLivePreview' );
 512                                 $this->diff = $request->getCheck( 'wpDiff' );
 513
 514                                 // Remember whether a save was requested, so we can indicate
 515                                 // if we forced preview due to session failure.
 516                                 $this->mTriedSave = !$this->preview;
 517
 518                                 if ( $this->tokenOk( $request ) ) {
 519                                         # Some browsers will not report any submit button
 520                                         # if the user hits enter in the comment box.
 521                                         # The unmarked state will be assumed to be a save,
 522                                         # if the form seems otherwise complete.
 523                                         wfDebug( __METHOD__ . ": Passed token check.\n" );
 524                                 } elseif ( $this->diff ) {
 525                                         # Failed token check, but only requested "Show Changes".
 526                                         wfDebug( __METHOD__ . ": Failed token check; Show Changes requested.\n" );
 527                                 } else {
 528                                         # Page might be a hack attempt posted from
 529                                         # an external site. Preview instead of saving.
 530                                         wfDebug( __METHOD__ . ": Failed token check; forcing preview\n" );
 531                                         $this->preview = true;
 532                                 }
 533                         }
 534                         $this->save = !$this->preview && !$this->diff;
 535                         if ( !preg_match( '/^\d{14}$/', $this->edittime ) ) {
 536                                 $this->edittime = null;
 537                         }
 538
 539                         if ( !preg_match( '/^\d{14}$/', $this->starttime ) ) {
 540                                 $this->starttime = null;
 541                         }
 542
 543                         $this->recreate  = $request->getCheck( 'wpRecreate' );
 544
 545                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 546                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 547
 548                         # Don't force edit summaries when a user is editing their own user or talk page
 549                         if ( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK ) &&
 550                                 $this->mTitle->getText() == $wgUser->getName() )
 551                         {
 552                                 $this->allowBlankSummary = true;
 553                         } else {
 554                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' ) || !$wgUser->getOption( 'forceeditsummary');
 555                         }
 556
 557                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
 558                 } else {
 559                         # Not a posted form? Start with nothing.
 560                         wfDebug( __METHOD__ . ": Not a posted form.\n" );
 561                         $this->textbox1     = '';
 562                         $this->summary      = '';
 563                         $this->sectiontitle = '';
 564                         $this->edittime     = '';
 565                         $this->starttime    = wfTimestampNow();
 566                         $this->edit         = false;
 567                         $this->preview      = false;
 568                         $this->save         = false;
 569                         $this->diff         = false;
 570                         $this->minoredit    = false;
 571                         $this->watchthis    = $request->getBool( 'watchthis', false ); // Watch may be overriden by request parameters
 572                         $this->recreate     = false;
 573
 574                         // When creating a new section, we can preload a section title by passing it as the
 575                         // preloadtitle parameter in the URL (Bug 13100)
 576                         if ( $this->section == 'new' && $request->getVal( 'preloadtitle' ) ) {
 577                                 $this->sectiontitle = $request->getVal( 'preloadtitle' );
 578                                 // Once wpSummary isn't being use for setting section titles, we should delete this.
 579                                 $this->summary = $request->getVal( 'preloadtitle' );
 580                         }
 581                         elseif ( $this->section != 'new' && $request->getVal( 'summary' ) ) {
 582                                 $this->summary = $request->getText( 'summary' );
 583                         }
 584
 585                         if ( $request->getVal( 'minor' ) ) {
 586                                 $this->minoredit = true;
 587                         }
 588                 }
 589
 590                 $this->bot = $request->getBool( 'bot', true );
 591                 $this->nosummary = $request->getBool( 'nosummary' );
 592
 593                 $this->oldid = $request->getInt( 'oldid' );
 594
 595                 $this->live = $request->getCheck( 'live' );
 596                 $this->editintro = $request->getText( 'editintro',
 597                         // Custom edit intro for new sections
 598                         $this->section === 'new' ? 'MediaWiki:addsection-editintro' : '' );
 599
 600                 // Allow extensions to modify form data
 601                 wfRunHooks( 'EditPage::importFormData', array( $this, $request ) );
 602
 603                 wfProfileOut( __METHOD__ );
 604         }
 605
 606         /**
 607          * Subpage overridable method for extracting the page content data from the
 608          * posted form to be placed in $this->textbox1, if using customized input
 609          * this method should be overrided and return the page text that will be used
 610          * for saving, preview parsing and so on...
 611          *
 612          * @param $request WebRequest
 613          */
 614         protected function importContentFormData( &$request ) {
 615                 return; // Don't do anything, EditPage already extracted wpTextbox1
 616         }
 617
 618         /**
 619          * Initialise form fields in the object
 620          * Called on the first invocation, e.g. when a user clicks an edit link
 621          * @return bool -- if the requested section is valid
 622          */
 623         function initialiseForm() {
 624                 global $wgUser;
 625                 $this->edittime = $this->mArticle->getTimestamp();
 626                 $this->textbox1 = $this->getContent( false );
 627                 // activate checkboxes if user wants them to be always active
 628                 # Sort out the "watch" checkbox
 629                 if ( $wgUser->getOption( 'watchdefault' ) ) {
 630                         # Watch all edits
 631                         $this->watchthis = true;
 632                 } elseif ( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
 633                         # Watch creations
 634                         $this->watchthis = true;
 635                 } elseif ( $this->mTitle->userIsWatching() ) {
 636                         # Already watched
 637                         $this->watchthis = true;
 638                 }
 639                 if ( $wgUser->getOption( 'minordefault' ) && !$this->isNew ) {
 640                         $this->minoredit = true;
 641                 }
 642                 if ( $this->textbox1 === false ) {
 643                         return false;
 644                 }
 645                 wfProxyCheck();
 646                 return true;
 647         }
 648
 649         /**
 650          * Fetch initial editing page content.
 651          *
 652          * @param $def_text string
 653          * @return mixed string on success, $def_text for invalid sections
 654          * @private
 655          */
 656         function getContent( $def_text = '' ) {
 657                 global $wgOut, $wgRequest, $wgParser;
 658
 659                 wfProfileIn( __METHOD__ );
 660
 661                 $text = false;
 662
 663                 // For message page not locally set, use the i18n message.
 664                 // For other non-existent articles, use preload text if any.
 665                 if ( !$this->mTitle->exists() || $this->section == 'new' ) {
 666                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI && $this->section != 'new' ) {
 667                                 # If this is a system message, get the default text.
 668                                 $text = $this->mTitle->getDefaultMessageText();
 669                         }
 670                         if ( $text === false ) {
 671                                 # If requested, preload some text.
 672                                 $preload = $wgRequest->getVal( 'preload',
 673                                         // Custom preload text for new sections
 674                                         $this->section === 'new' ? 'MediaWiki:addsection-preload' : '' );
 675                                 $text = $this->getPreloadedText( $preload );
 676                         }
 677                 // For existing pages, get text based on "undo" or section parameters.
 678                 } else {
 679                         if ( $this->section != '' ) {
 680                                 // Get section edit text (returns $def_text for invalid sections)
 681                                 $text = $wgParser->getSection( $this->getOriginalContent(), $this->section, $def_text );
 682                         } else {
 683                                 $undoafter = $wgRequest->getInt( 'undoafter' );
 684                                 $undo = $wgRequest->getInt( 'undo' );
 685
 686                                 if ( $undo > 0 && $undoafter > 0 ) {
 687                                         if ( $undo < $undoafter ) {
 688                                                 # If they got undoafter and undo round the wrong way, switch them
 689                                                 list( $undo, $undoafter ) = array( $undoafter, $undo );
 690                                         }
 691
 692                                         $undorev = Revision::newFromId( $undo );
 693                                         $oldrev = Revision::newFromId( $undoafter );
 694
 695                                         # Sanity check, make sure it's the right page,
 696                                         # the revisions exist and they were not deleted.
 697                                         # Otherwise, $text will be left as-is.
 698                                         if ( !is_null( $undorev ) && !is_null( $oldrev ) &&
 699                                                 $undorev->getPage() == $oldrev->getPage() &&
 700                                                 $undorev->getPage() == $this->mTitle->getArticleId() &&
 701                                                 !$undorev->isDeleted( Revision::DELETED_TEXT ) &&
 702                                                 !$oldrev->isDeleted( Revision::DELETED_TEXT ) ) {
 703
 704                                                 $text = $this->mArticle->getUndoText( $undorev, $oldrev );
 705                                                 if ( $text === false ) {
 706                                                         # Warn the user that something went wrong
 707                                                         $undoMsg = 'failure';
 708                                                 } else {
 709                                                         # Inform the user of our success and set an automatic edit summary
 710                                                         $undoMsg = 'success';
 711
 712                                                         # If we just undid one rev, use an autosummary
 713                                                         $firstrev = $oldrev->getNext();
 714                                                         if ( $firstrev->getId() == $undo ) {
 715                                                                 $undoSummary = wfMsgForContent( 'undo-summary', $undo, $undorev->getUserText() );
 716                                                                 if ( $this->summary === '' ) {
 717                                                                         $this->summary = $undoSummary;
 718                                                                 } else {
 719                                                                         $this->summary = $undoSummary . wfMsgForContent( 'colon-separator' ) . $this->summary;
 720                                                                 }
 721                                                                 $this->undidRev = $undo;
 722                                                         }
 723                                                         $this->formtype = 'diff';
 724                                                 }
 725                                         } else {
 726                                                 // Failed basic sanity checks.
 727                                                 // Older revisions may have been removed since the link
 728                                                 // was created, or we may simply have got bogus input.
 729                                                 $undoMsg = 'norev';
 730                                         }
 731
 732                                         $this->editFormPageTop .= $wgOut->parse( "<div class=\"error mw-undo-{$undoMsg}\">" .
 733                                                 wfMsgNoTrans( 'undo-' . $undoMsg ) . '</div>', true, /* interface */true );
 734                                 }
 735
 736                                 if ( $text === false ) {
 737                                         $text = $this->getOriginalContent();
 738                                 }
 739                         }
 740                 }
 741
 742                 wfProfileOut( __METHOD__ );
 743                 return $text;
 744         }
 745
 746         /**
 747          * Get the content of the wanted revision, without section extraction.
 748          *
 749          * The result of this function can be used to compare user's input with
 750          * section replaced in its context (using WikiPage::replaceSection())
 751          * to the original text of the edit.
 752          *
 753          * This difers from Article::getContent() that when a missing revision is
 754          * encountered the result will be an empty string and not the
 755          * 'missing-article' message.
 756          *
 757          * @since 1.19
 758          * @return string
 759          */
 760         private function getOriginalContent() {
 761                 if ( $this->section == 'new' ) {
 762                         return $this->getCurrentText();
 763                 }
 764                 $revision = $this->mArticle->getRevisionFetched();
 765                 if ( $revision === null ) {
 766                         return '';
 767                 }
 768                 return $this->mArticle->getContent();
 769         }
 770
 771         /**
 772          * Get the actual text of the page. This is basically similar to
 773          * WikiPage::getRawText() except that when the page doesn't exist an empty
 774          * string is returned instead of false.
 775          *
 776          * @since 1.19
 777          * @return string
 778          */
 779         private function getCurrentText() {
 780                 $text = $this->mArticle->getRawText();
 781                 if ( $text === false ) {
 782                         return '';
 783                 } else {
 784                         return $text;
 785                 }
 786         }
 787
 788         /**
 789          * Use this method before edit() to preload some text into the edit box
 790          *
 791          * @param $text string
 792          */
 793         public function setPreloadedText( $text ) {
 794                 $this->mPreloadText = $text;
 795         }
 796
 797         /**
 798          * Get the contents to be preloaded into the box, either set by
 799          * an earlier setPreloadText() or by loading the given page.
 800          *
 801          * @param $preload String: representing the title to preload from.
 802          * @return String
 803          */
 804         protected function getPreloadedText( $preload ) {
 805                 global $wgUser, $wgParser;
 806
 807                 if ( !empty( $this->mPreloadText ) ) {
 808                         return $this->mPreloadText;
 809                 }
 810
 811                 if ( $preload === '' ) {
 812                         return '';
 813                 }
 814
 815                 $title = Title::newFromText( $preload );
 816                 # Check for existence to avoid getting MediaWiki:Noarticletext
 817                 if ( $title === null || !$title->exists() || !$title->userCan( 'read' ) ) {
 818                         return '';
 819                 }
 820
 821                 $page = WikiPage::factory( $title );
 822                 if ( $page->isRedirect() ) {
 823                         $title = $page->getRedirectTarget();
 824                         # Same as before
 825                         if ( $title === null || !$title->exists() || !$title->userCan( 'read' ) ) {
 826                                 return '';
 827                         }
 828                         $page = WikiPage::factory( $title );
 829                 }
 830
 831                 $parserOptions = ParserOptions::newFromUser( $wgUser );
 832                 return $wgParser->getPreloadText( $page->getRawText(), $title, $parserOptions );
 833         }
 834
 835         /**
 836          * Make sure the form isn't faking a user's credentials.
 837          *
 838          * @param $request WebRequest
 839          * @return bool
 840          * @private
 841          */
 842         function tokenOk( &$request ) {
 843                 global $wgUser;
 844                 $token = $request->getVal( 'wpEditToken' );
 845                 $this->mTokenOk = $wgUser->matchEditToken( $token );
 846                 $this->mTokenOkExceptSuffix = $wgUser->matchEditTokenNoSuffix( $token );
 847                 return $this->mTokenOk;
 848         }
 849
 850         /**
 851          * Attempt submission
 852          * @return bool false if output is done, true if the rest of the form should be displayed
 853          */
 854         function attemptSave() {
 855                 global $wgUser, $wgOut;
 856
 857                 $resultDetails = false;
 858                 # Allow bots to exempt some edits from bot flagging
 859                 $bot = $wgUser->isAllowed( 'bot' ) && $this->bot;
 860                 $status = $this->internalAttemptSave( $resultDetails, $bot );
 861                 // FIXME: once the interface for internalAttemptSave() is made nicer, this should use the message in $status
 862
 863                 if ( $status->value == self::AS_SUCCESS_UPDATE || $status->value == self::AS_SUCCESS_NEW_ARTICLE ) {
 864                         $this->didSave = true;
 865                 }
 866
 867                 switch ( $status->value ) {
 868                         case self::AS_HOOK_ERROR_EXPECTED:
 869                         case self::AS_CONTENT_TOO_BIG:
 870                         case self::AS_ARTICLE_WAS_DELETED:
 871                         case self::AS_CONFLICT_DETECTED:
 872                         case self::AS_SUMMARY_NEEDED:
 873                         case self::AS_TEXTBOX_EMPTY:
 874                         case self::AS_MAX_ARTICLE_SIZE_EXCEEDED:
 875                         case self::AS_END:
 876                                 return true;
 877
 878                         case self::AS_HOOK_ERROR:
 879                         case self::AS_FILTERING:
 880                                 return false;
 881
 882                         case self::AS_SUCCESS_NEW_ARTICLE:
 883                                 $query = $resultDetails['redirect'] ? 'redirect=no' : '';
 884                                 $anchor = isset ( $resultDetails['sectionanchor'] ) ? $resultDetails['sectionanchor'] : '';
 885                                 $wgOut->redirect( $this->mTitle->getFullURL( $query ) . $anchor );
 886                                 return false;
 887
 888                         case self::AS_SUCCESS_UPDATE:
 889                                 $extraQuery = '';
 890                                 $sectionanchor = $resultDetails['sectionanchor'];
 891
 892                                 // Give extensions a chance to modify URL query on update
 893                                 wfRunHooks( 'ArticleUpdateBeforeRedirect', array( $this->mArticle, &$sectionanchor, &$extraQuery ) );
 894
 895                                 if ( $resultDetails['redirect'] ) {
 896                                         if ( $extraQuery == '' ) {
 897                                                 $extraQuery = 'redirect=no';
 898                                         } else {
 899                                                 $extraQuery = 'redirect=no&' . $extraQuery;
 900                                         }
 901                                 }
 902                                 $wgOut->redirect( $this->mTitle->getFullURL( $extraQuery ) . $sectionanchor );
 903                                 return false;
 904
 905                         case self::AS_BLANK_ARTICLE:
 906                                 $wgOut->redirect( $this->getContextTitle()->getFullURL() );
 907                                 return false;
 908
 909                         case self::AS_SPAM_ERROR:
 910                                 $this->spamPageWithContent( $resultDetails['spam'] );
 911                                 return false;
 912
 913                         case self::AS_BLOCKED_PAGE_FOR_USER:
 914                                 throw new UserBlockedError( $wgUser->mBlock );
 915
 916                         case self::AS_IMAGE_REDIRECT_ANON:
 917                         case self::AS_IMAGE_REDIRECT_LOGGED:
 918                                 throw new PermissionsError( 'upload' );
 919
 920                         case self::AS_READ_ONLY_PAGE_ANON:
 921                         case self::AS_READ_ONLY_PAGE_LOGGED:
 922                                 throw new PermissionsError( 'edit' );
 923
 924                         case self::AS_READ_ONLY_PAGE:
 925                                 throw new ReadOnlyError;
 926
 927                         case self::AS_RATE_LIMITED:
 928                                 throw new ThrottledError();
 929
 930                         case self::AS_NO_CREATE_PERMISSION:
 931                                 $permission = $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage';
 932                                 throw new PermissionsError( $permission );
 933
 934                 }
 935                 return false;
 936         }
 937
 938         /**
 939          * Attempt submission (no UI)
 940          *
 941          * @param $result
 942          * @param $bot bool
 943          *
 944          * @return Status object, possibly with a message, but always with one of the AS_* constants in $status->value,
 945          *
 946          * FIXME: This interface is TERRIBLE, but hard to get rid of due to various error display idiosyncrasies. There are
 947          * also lots of cases where error metadata is set in the object and retrieved later instead of being returned, e.g.
 948          * AS_CONTENT_TOO_BIG and AS_BLOCKED_PAGE_FOR_USER. All that stuff needs to be cleaned up some time.
 949          */
 950         function internalAttemptSave( &$result, $bot = false ) {
 951                 global $wgFilterCallback, $wgUser, $wgRequest, $wgParser;
 952                 global $wgMaxArticleSize;
 953
 954                 $status = Status::newGood();
 955
 956                 wfProfileIn( __METHOD__  );
 957                 wfProfileIn( __METHOD__ . '-checks' );
 958
 959                 if ( !wfRunHooks( 'EditPage::attemptSave', array( $this ) ) ) {
 960                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving\n" );
 961                         $status->fatal( 'hookaborted' );
 962                         $status->value = self::AS_HOOK_ERROR;
 963                         wfProfileOut( __METHOD__ . '-checks' );
 964                         wfProfileOut( __METHOD__  );
 965                         return $status;
 966                 }
 967
 968                 # Check image redirect
 969                 if ( $this->mTitle->getNamespace() == NS_FILE &&
 970                         Title::newFromRedirect( $this->textbox1 ) instanceof Title &&
 971                         !$wgUser->isAllowed( 'upload' ) ) {
 972                                 $code = $wgUser->isAnon() ? self::AS_IMAGE_REDIRECT_ANON : self::AS_IMAGE_REDIRECT_LOGGED;
 973                                 $status->setResult( false, $code );
 974
 975                                 wfProfileOut( __METHOD__ . '-checks' );
 976                                 wfProfileOut( __METHOD__  );
 977
 978                                 return $status;
 979                 }
 980
 981                 # Check for spam
 982                 $match = self::matchSummarySpamRegex( $this->summary );
 983                 if ( $match === false ) {
 984                         $match = self::matchSpamRegex( $this->textbox1 );
 985                 }
 986                 if ( $match !== false ) {
 987                         $result['spam'] = $match;
 988                         $ip = $wgRequest->getIP();
 989                         $pdbk = $this->mTitle->getPrefixedDBkey();
 990                         $match = str_replace( "\n", '', $match );
 991                         wfDebugLog( 'SpamRegex', "$ip spam regex hit [[$pdbk]]: \"$match\"" );
 992                         $status->fatal( 'spamprotectionmatch', $match );
 993                         $status->value = self::AS_SPAM_ERROR;
 994                         wfProfileOut( __METHOD__ . '-checks' );
 995                         wfProfileOut( __METHOD__ );
 996                         return $status;
 997                 }
 998                 if ( $wgFilterCallback && is_callable( $wgFilterCallback ) && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section, $this->hookError, $this->summary ) ) {
 999                         # Error messages or other handling should be performed by the filter function
1000                         $status->setResult( false, self::AS_FILTERING );
1001                         wfProfileOut( __METHOD__ . '-checks' );
1002                         wfProfileOut( __METHOD__ );
1003                         return $status;
1004                 }
1005                 if ( !wfRunHooks( 'EditFilter', array( $this, $this->textbox1, $this->section, &$this->hookError, $this->summary ) ) ) {
1006                         # Error messages etc. could be handled within the hook...
1007                         $status->fatal( 'hookaborted' );
1008                         $status->value = self::AS_HOOK_ERROR;
1009                         wfProfileOut( __METHOD__ . '-checks' );
1010                         wfProfileOut( __METHOD__ );
1011                         return $status;
1012                 } elseif ( $this->hookError != '' ) {
1013                         # ...or the hook could be expecting us to produce an error
1014                         $status->fatal( 'hookaborted' );
1015                         $status->value = self::AS_HOOK_ERROR_EXPECTED;
1016                         wfProfileOut( __METHOD__ . '-checks' );
1017                         wfProfileOut( __METHOD__ );
1018                         return $status;
1019                 }
1020
1021                 if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
1022                         // Auto-block user's IP if the account was "hard" blocked
1023                         $wgUser->spreadAnyEditBlock();
1024                         # Check block state against master, thus 'false'.
1025                         $status->setResult( false, self::AS_BLOCKED_PAGE_FOR_USER );
1026                         wfProfileOut( __METHOD__ . '-checks' );
1027                         wfProfileOut( __METHOD__ );
1028                         return $status;
1029                 }
1030
1031                 $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
1032                 if ( $this->kblength > $wgMaxArticleSize ) {
1033                         // Error will be displayed by showEditForm()
1034                         $this->tooBig = true;
1035                         $status->setResult( false, self::AS_CONTENT_TOO_BIG );
1036                         wfProfileOut( __METHOD__ . '-checks' );
1037                         wfProfileOut( __METHOD__ );
1038                         return $status;
1039                 }
1040
1041                 if ( !$wgUser->isAllowed( 'edit' ) ) {
1042                         if ( $wgUser->isAnon() ) {
1043                                 $status->setResult( false, self::AS_READ_ONLY_PAGE_ANON );
1044                                 wfProfileOut( __METHOD__ . '-checks' );
1045                                 wfProfileOut( __METHOD__ );
1046                                 return $status;
1047                         } else {
1048                                 $status->fatal( 'readonlytext' );
1049                                 $status->value = self::AS_READ_ONLY_PAGE_LOGGED;
1050                                 wfProfileOut( __METHOD__ . '-checks' );
1051                                 wfProfileOut( __METHOD__ );
1052                                 return $status;
1053                         }
1054                 }
1055
1056                 if ( wfReadOnly() ) {
1057                         $status->fatal( 'readonlytext' );
1058                         $status->value = self::AS_READ_ONLY_PAGE;
1059                         wfProfileOut( __METHOD__ . '-checks' );
1060                         wfProfileOut( __METHOD__ );
1061                         return $status;
1062                 }
1063                 if ( $wgUser->pingLimiter() ) {
1064                         $status->fatal( 'actionthrottledtext' );
1065                         $status->value = self::AS_RATE_LIMITED;
1066                         wfProfileOut( __METHOD__ . '-checks' );
1067                         wfProfileOut( __METHOD__ );
1068                         return $status;
1069                 }
1070
1071                 # If the article has been deleted while editing, don't save it without
1072                 # confirmation
1073                 if ( $this->wasDeletedSinceLastEdit() && !$this->recreate ) {
1074                         $status->setResult( false, self::AS_ARTICLE_WAS_DELETED );
1075                         wfProfileOut( __METHOD__ . '-checks' );
1076                         wfProfileOut( __METHOD__ );
1077                         return $status;
1078                 }
1079
1080                 wfProfileOut( __METHOD__ . '-checks' );
1081
1082                 # If article is new, insert it.
1083                 $aid = $this->mTitle->getArticleID( Title::GAID_FOR_UPDATE );
1084                 $new = ( $aid == 0 );
1085
1086                 if ( $new ) {
1087                         // Late check for create permission, just in case *PARANOIA*
1088                         if ( !$this->mTitle->userCan( 'create' ) ) {
1089                                 $status->fatal( 'nocreatetext' );
1090                                 $status->value = self::AS_NO_CREATE_PERMISSION;
1091                                 wfDebug( __METHOD__ . ": no create permission\n" );
1092                                 wfProfileOut( __METHOD__ );
1093                                 return $status;
1094                         }
1095
1096                         # Don't save a new article if it's blank.
1097                         if ( $this->textbox1 == '' ) {
1098                                 $status->setResult( false, self::AS_BLANK_ARTICLE );
1099                                 wfProfileOut( __METHOD__ );
1100                                 return $status;
1101                         }
1102
1103                         // Run post-section-merge edit filter
1104                         if ( !wfRunHooks( 'EditFilterMerged', array( $this, $this->textbox1, &$this->hookError, $this->summary ) ) ) {
1105                                 # Error messages etc. could be handled within the hook...
1106                                 $status->fatal( 'hookaborted' );
1107                                 $status->value = self::AS_HOOK_ERROR;
1108                                 wfProfileOut( __METHOD__ );
1109                                 return $status;
1110                         } elseif ( $this->hookError != '' ) {
1111                                 # ...or the hook could be expecting us to produce an error
1112                                 $status->fatal( 'hookaborted' );
1113                                 $status->value = self::AS_HOOK_ERROR_EXPECTED;
1114                                 wfProfileOut( __METHOD__ );
1115                                 return $status;
1116                         }
1117
1118                         # Handle the user preference to force summaries here. Check if it's not a redirect.
1119                         if ( !$this->allowBlankSummary && !Title::newFromRedirect( $this->textbox1 ) ) {
1120                                 if ( md5( $this->summary ) == $this->autoSumm ) {
1121                                         $this->missingSummary = true;
1122                                         $status->fatal( 'missingsummary' ); // or 'missingcommentheader' if $section == 'new'. Blegh
1123                                         $status->value = self::AS_SUMMARY_NEEDED;
1124                                         wfProfileOut( __METHOD__ );
1125                                         return $status;
1126                                 }
1127                         }
1128
1129                         $text = $this->textbox1;
1130                         $result['sectionanchor'] = '';
1131                         if ( $this->section == 'new' ) {
1132                                 if ( $this->sectiontitle !== '' ) {
1133                                         // Insert the section title above the content.
1134                                         $text = wfMsgForContent( 'newsectionheaderdefaultlevel', $this->sectiontitle ) . "\n\n" . $text;
1135
1136                                         // Jump to the new section
1137                                         $result['sectionanchor'] = $wgParser->guessLegacySectionNameFromWikiText( $this->sectiontitle );
1138
1139                                         // If no edit summary was specified, create one automatically from the section
1140                                         // title and have it link to the new section. Otherwise, respect the summary as
1141                                         // passed.
1142                                         if ( $this->summary === '' ) {
1143                                                 $cleanSectionTitle = $wgParser->stripSectionName( $this->sectiontitle );
1144                                                 $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSectionTitle );
1145                                         }
1146                                 } elseif ( $this->summary !== '' ) {
1147                                         // Insert the section title above the content.
1148                                         $text = wfMsgForContent( 'newsectionheaderdefaultlevel', $this->summary ) . "\n\n" . $text;
1149
1150                                         // Jump to the new section
1151                                         $result['sectionanchor'] = $wgParser->guessLegacySectionNameFromWikiText( $this->summary );
1152
1153                                         // Create a link to the new section from the edit summary.
1154                                         $cleanSummary = $wgParser->stripSectionName( $this->summary );
1155                                         $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
1156                                 }
1157                         }
1158
1159                         $status->value = self::AS_SUCCESS_NEW_ARTICLE;
1160
1161                 } else {
1162
1163                         # Article exists. Check for edit conflict.
1164
1165                         $this->mArticle->clear(); # Force reload of dates, etc.
1166                         $timestamp = $this->mArticle->getTimestamp();
1167
1168                         wfDebug( "timestamp: {$timestamp}, edittime: {$this->edittime}\n" );
1169
1170                         if ( $timestamp != $this->edittime ) {
1171                                 $this->isConflict = true;
1172                                 if ( $this->section == 'new' ) {
1173                                         if ( $this->mArticle->getUserText() == $wgUser->getName() &&
1174                                                 $this->mArticle->getComment() == $this->summary ) {
1175                                                 // Probably a duplicate submission of a new comment.
1176                                                 // This can happen when squid resends a request after
1177                                                 // a timeout but the first one actually went through.
1178                                                 wfDebug( __METHOD__ . ": duplicate new section submission; trigger edit conflict!\n" );
1179                                         } else {
1180                                                 // New comment; suppress conflict.
1181                                                 $this->isConflict = false;
1182                                                 wfDebug( __METHOD__ .": conflict suppressed; new section\n" );
1183                                         }
1184                                 } elseif ( $this->section == '' && $this->userWasLastToEdit( $wgUser->getId(), $this->edittime ) ) {
1185                                         # Suppress edit conflict with self, except for section edits where merging is required.
1186                                         wfDebug( __METHOD__ . ": Suppressing edit conflict, same user.\n" );
1187                                         $this->isConflict = false;
1188                                 }
1189                         }
1190
1191                         // If sectiontitle is set, use it, otherwise use the summary as the section title (for
1192                         // backwards compatibility with old forms/bots).
1193                         if ( $this->sectiontitle !== '' ) {
1194                                 $sectionTitle = $this->sectiontitle;
1195                         } else {
1196                                 $sectionTitle = $this->summary;
1197                         }
1198
1199                         if ( $this->isConflict ) {
1200                                 wfDebug( __METHOD__ . ": conflict! getting section '$this->section' for time '$this->edittime' (article time '{$timestamp}')\n" );
1201                                 $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $sectionTitle, $this->edittime );
1202                         } else {
1203                                 wfDebug( __METHOD__ . ": getting section '$this->section'\n" );
1204                                 $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $sectionTitle );
1205                         }
1206                         if ( is_null( $text ) ) {
1207                                 wfDebug( __METHOD__ . ": activating conflict; section replace failed.\n" );
1208                                 $this->isConflict = true;
1209                                 $text = $this->textbox1; // do not try to merge here!
1210                         } elseif ( $this->isConflict ) {
1211                                 # Attempt merge
1212                                 if ( $this->mergeChangesInto( $text ) ) {
1213                                         // Successful merge! Maybe we should tell the user the good news?
1214                                         $this->isConflict = false;
1215                                         wfDebug( __METHOD__ . ": Suppressing edit conflict, successful merge.\n" );
1216                                 } else {
1217                                         $this->section = '';
1218                                         $this->textbox1 = $text;
1219                                         wfDebug( __METHOD__ . ": Keeping edit conflict, failed merge.\n" );
1220                                 }
1221                         }
1222
1223                         if ( $this->isConflict ) {
1224                                 $status->setResult( false, self::AS_CONFLICT_DETECTED );
1225                                 wfProfileOut( __METHOD__ );
1226                                 return $status;
1227                         }
1228
1229                         // Run post-section-merge edit filter
1230                         if ( !wfRunHooks( 'EditFilterMerged', array( $this, $text, &$this->hookError, $this->summary ) ) ) {
1231                                 # Error messages etc. could be handled within the hook...
1232                                 $status->fatal( 'hookaborted' );
1233                                 $status->value = self::AS_HOOK_ERROR;
1234                                 wfProfileOut( __METHOD__ );
1235                                 return $status;
1236                         } elseif ( $this->hookError != '' ) {
1237                                 # ...or the hook could be expecting us to produce an error
1238                                 $status->fatal( 'hookaborted' );
1239                                 $status->value = self::AS_HOOK_ERROR_EXPECTED;
1240                                 wfProfileOut( __METHOD__ );
1241                                 return $status;
1242                         }
1243
1244                         # Handle the user preference to force summaries here, but not for null edits
1245                         if ( $this->section != 'new' && !$this->allowBlankSummary
1246                                 && $this->getOriginalContent() != $text
1247                                 && !Title::newFromRedirect( $text ) ) # check if it's not a redirect
1248                         {
1249                                 if ( md5( $this->summary ) == $this->autoSumm ) {
1250                                         $this->missingSummary = true;
1251                                         $status->fatal( 'missingsummary' );
1252                                         $status->value = self::AS_SUMMARY_NEEDED;
1253                                         wfProfileOut( __METHOD__ );
1254                                         return $status;
1255                                 }
1256                         }
1257
1258                         # And a similar thing for new sections
1259                         if ( $this->section == 'new' && !$this->allowBlankSummary ) {
1260                                 if ( trim( $this->summary ) == '' ) {
1261                                         $this->missingSummary = true;
1262                                         $status->fatal( 'missingsummary' ); // or 'missingcommentheader' if $section == 'new'. Blegh
1263                                         $status->value = self::AS_SUMMARY_NEEDED;
1264                                         wfProfileOut( __METHOD__ );
1265                                         return $status;
1266                                 }
1267                         }
1268
1269                         # All's well
1270                         wfProfileIn( __METHOD__ . '-sectionanchor' );
1271                         $sectionanchor = '';
1272                         if ( $this->section == 'new' ) {
1273                                 if ( $this->textbox1 == '' ) {
1274                                         $this->missingComment = true;
1275                                         $status->fatal( 'missingcommenttext' );
1276                                         $status->value = self::AS_TEXTBOX_EMPTY;
1277                                         wfProfileOut( __METHOD__ . '-sectionanchor' );
1278                                         wfProfileOut( __METHOD__ );
1279                                         return $status;
1280                                 }
1281                                 if ( $this->sectiontitle !== '' ) {
1282                                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $this->sectiontitle );
1283                                         // If no edit summary was specified, create one automatically from the section
1284                                         // title and have it link to the new section. Otherwise, respect the summary as
1285                                         // passed.
1286                                         if ( $this->summary === '' ) {
1287                                                 $cleanSectionTitle = $wgParser->stripSectionName( $this->sectiontitle );
1288                                                 $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSectionTitle );
1289                                         }
1290                                 } elseif ( $this->summary !== '' ) {
1291                                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $this->summary );
1292                                         # This is a new section, so create a link to the new section
1293                                         # in the revision summary.
1294                                         $cleanSummary = $wgParser->stripSectionName( $this->summary );
1295                                         $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
1296                                 }
1297                         } elseif ( $this->section != '' ) {
1298                                 # Try to get a section anchor from the section source, redirect to edited section if header found
1299                                 # XXX: might be better to integrate this into Article::replaceSection
1300                                 # for duplicate heading checking and maybe parsing
1301                                 $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
1302                                 # we can't deal with anchors, includes, html etc in the header for now,
1303                                 # headline would need to be parsed to improve this
1304                                 if ( $hasmatch && strlen( $matches[2] ) > 0 ) {
1305                                         $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $matches[2] );
1306                                 }
1307                         }
1308                         $result['sectionanchor'] = $sectionanchor;
1309                         wfProfileOut( __METHOD__ . '-sectionanchor' );
1310
1311                         // Save errors may fall down to the edit form, but we've now
1312                         // merged the section into full text. Clear the section field
1313                         // so that later submission of conflict forms won't try to
1314                         // replace that into a duplicated mess.
1315                         $this->textbox1 = $text;
1316                         $this->section = '';
1317
1318                         $status->value = self::AS_SUCCESS_UPDATE;
1319                 }
1320
1321                 // Check for length errors again now that the section is merged in
1322                 $this->kblength = (int)( strlen( $text ) / 1024 );
1323                 if ( $this->kblength > $wgMaxArticleSize ) {
1324                         $this->tooBig = true;
1325                         $status->setResult( false, self::AS_MAX_ARTICLE_SIZE_EXCEEDED );
1326                         wfProfileOut( __METHOD__ );
1327                         return $status;
1328                 }
1329
1330                 $flags = EDIT_DEFER_UPDATES | EDIT_AUTOSUMMARY |
1331                         ( $new ? EDIT_NEW : EDIT_UPDATE ) |
1332                         ( ( $this->minoredit && !$this->isNew ) ? EDIT_MINOR : 0 ) |
1333                         ( $bot ? EDIT_FORCE_BOT : 0 );
1334
1335                 $doEditStatus = $this->mArticle->doEdit( $text, $this->summary, $flags );
1336
1337                 if ( $doEditStatus->isOK() ) {
1338                         $result['redirect'] = Title::newFromRedirect( $text ) !== null;
1339                         $this->commitWatch();
1340                         wfProfileOut( __METHOD__ );
1341                         return $status;
1342                 } else {
1343                         $this->isConflict = true;
1344                         $doEditStatus->value = self::AS_END; // Destroys data doEdit() put in $status->value but who cares
1345                         wfProfileOut( __METHOD__ );
1346                         return $doEditStatus;
1347                 }
1348         }
1349
1350         /**
1351          * Commit the change of watch status
1352          */
1353         protected function commitWatch() {
1354                 global $wgUser;
1355                 if ( $this->watchthis xor $this->mTitle->userIsWatching() ) {
1356                         $dbw = wfGetDB( DB_MASTER );
1357                         $dbw->begin();
1358                         if ( $this->watchthis ) {
1359                                 WatchAction::doWatch( $this->mTitle, $wgUser );
1360                         } else {
1361                                 WatchAction::doUnwatch( $this->mTitle, $wgUser );
1362                         }
1363                         $dbw->commit();
1364                 }
1365         }
1366
1367         /**
1368          * Check if no edits were made by other users since
1369          * the time a user started editing the page. Limit to
1370          * 50 revisions for the sake of performance.
1371          *
1372          * @param $id int
1373          * @param $edittime string
1374          *
1375          * @return bool
1376          */
1377         protected function userWasLastToEdit( $id, $edittime ) {
1378                 if( !$id ) return false;
1379                 $dbw = wfGetDB( DB_MASTER );
1380                 $res = $dbw->select( 'revision',
1381                         'rev_user',
1382                         array(
1383                                 'rev_page' => $this->mTitle->getArticleId(),
1384                                 'rev_timestamp > '.$dbw->addQuotes( $dbw->timestamp($edittime) )
1385                         ),
1386                         __METHOD__,
1387                         array( 'ORDER BY' => 'rev_timestamp ASC', 'LIMIT' => 50 ) );
1388                 foreach ( $res as $row ) {
1389                         if( $row->rev_user != $id ) {
1390                                 return false;
1391                         }
1392                 }
1393                 return true;
1394         }
1395
1396         /**
1397          * @private
1398          * @todo document
1399          *
1400          * @parma $editText string
1401          *
1402          * @return bool
1403          */
1404         function mergeChangesInto( &$editText ){
1405                 wfProfileIn( __METHOD__ );
1406
1407                 $db = wfGetDB( DB_MASTER );
1408
1409                 // This is the revision the editor started from
1410                 $baseRevision = $this->getBaseRevision();
1411                 if ( is_null( $baseRevision ) ) {
1412                         wfProfileOut( __METHOD__ );
1413                         return false;
1414                 }
1415                 $baseText = $baseRevision->getText();
1416
1417                 // The current state, we want to merge updates into it
1418                 $currentRevision = Revision::loadFromTitle( $db, $this->mTitle );
1419                 if ( is_null( $currentRevision ) ) {
1420                         wfProfileOut( __METHOD__ );
1421                         return false;
1422                 }
1423                 $currentText = $currentRevision->getText();
1424
1425                 $result = '';
1426                 if ( wfMerge( $baseText, $editText, $currentText, $result ) ) {
1427                         $editText = $result;
1428                         wfProfileOut( __METHOD__ );
1429                         return true;
1430                 } else {
1431                         wfProfileOut( __METHOD__ );
1432                         return false;
1433                 }
1434         }
1435
1436         /**
1437          * @return Revision
1438          */
1439         function getBaseRevision() {
1440                 if ( !$this->mBaseRevision ) {
1441                         $db = wfGetDB( DB_MASTER );
1442                         $baseRevision = Revision::loadFromTimestamp(
1443                                 $db, $this->mTitle, $this->edittime );
1444                         return $this->mBaseRevision = $baseRevision;
1445                 } else {
1446                         return $this->mBaseRevision;
1447                 }
1448         }
1449
1450         /**
1451          * Check given input text against $wgSpamRegex, and return the text of the first match.
1452          *
1453          * @param $text string
1454          *
1455          * @return string|false matching string or false
1456          */
1457         public static function matchSpamRegex( $text ) {
1458                 global $wgSpamRegex;
1459                 // For back compatibility, $wgSpamRegex may be a single string or an array of regexes.
1460                 $regexes = (array)$wgSpamRegex;
1461                 return self::matchSpamRegexInternal( $text, $regexes );
1462         }
1463
1464         /**
1465          * Check given input text against $wgSpamRegex, and return the text of the first match.
1466          *
1467          * @parma $text string
1468          *
1469          * @return string|false  matching string or false
1470          */
1471         public static function matchSummarySpamRegex( $text ) {
1472                 global $wgSummarySpamRegex;
1473                 $regexes = (array)$wgSummarySpamRegex;
1474                 return self::matchSpamRegexInternal( $text, $regexes );
1475         }
1476
1477         /**
1478          * @param $text string
1479          * @param $regexes array
1480          * @return bool|string
1481          */
1482         protected static function matchSpamRegexInternal( $text, $regexes ) {
1483                 foreach( $regexes as $regex ) {
1484                         $matches = array();
1485                         if( preg_match( $regex, $text, $matches ) ) {
1486                                 return $matches[0];
1487                         }
1488                 }
1489                 return false;
1490         }
1491
1492         function setHeaders() {
1493                 global $wgOut, $wgUser;
1494
1495                 $wgOut->addModules( 'mediawiki.action.edit' );
1496
1497                 if ( $wgUser->getOption( 'uselivepreview', false ) ) {
1498                         $wgOut->addModules( 'mediawiki.legacy.preview' );
1499                 }
1500                 // Bug #19334: textarea jumps when editing articles in IE8
1501                 $wgOut->addStyle( 'common/IE80Fixes.css', 'screen', 'IE 8' );
1502
1503                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1504
1505                 # Enabled article-related sidebar, toplinks, etc.
1506                 $wgOut->setArticleRelated( true );
1507
1508                 if ( $this->isConflict ) {
1509                         $wgOut->setPageTitle( wfMessage( 'editconflict', $this->getContextTitle()->getPrefixedText() ) );
1510                 } elseif ( $this->section != '' ) {
1511                         $msg = $this->section == 'new' ? 'editingcomment' : 'editingsection';
1512                         $wgOut->setPageTitle( wfMessage( $msg, $this->getContextTitle()->getPrefixedText() ) );
1513                 } else {
1514                         # Use the title defined by DISPLAYTITLE magic word when present
1515                         if ( isset( $this->mParserOutput )
1516                          && ( $dt = $this->mParserOutput->getDisplayTitle() ) !== false ) {
1517                                 $title = $dt;
1518                         } else {
1519                                 $title = $this->getContextTitle()->getPrefixedText();
1520                         }
1521                         $wgOut->setPageTitle( wfMessage( 'editing', $title ) );
1522                 }
1523         }
1524
1525         /**
1526          * Show all applicable editing introductions
1527          */
1528         protected function showIntro() {
1529                 global $wgOut, $wgUser;
1530                 if ( $this->suppressIntro ) {
1531                         return;
1532                 }
1533
1534                 $namespace = $this->mTitle->getNamespace();
1535
1536                 if ( $namespace == NS_MEDIAWIKI ) {
1537                         # Show a warning if editing an interface message
1538                         $wgOut->wrapWikiMsg( "<div class='mw-editinginterface'>\n$1\n</div>", 'editinginterface' );
1539                 }
1540
1541                 # Show a warning message when someone creates/edits a user (talk) page but the user does not exist
1542                 # Show log extract when the user is currently blocked
1543                 if ( $namespace == NS_USER || $namespace == NS_USER_TALK ) {
1544                         $parts = explode( '/', $this->mTitle->getText(), 2 );
1545                         $username = $parts[0];
1546                         $user = User::newFromName( $username, false /* allow IP users*/ );
1547                         $ip = User::isIP( $username );
1548                         if ( !($user && $user->isLoggedIn()) && !$ip ) { # User does not exist
1549                                 $wgOut->wrapWikiMsg( "<div class=\"mw-userpage-userdoesnotexist error\">\n$1\n</div>",
1550                                         array( 'userpage-userdoesnotexist', wfEscapeWikiText( $username ) ) );
1551                         } elseif ( $user->isBlocked() ) { # Show log extract if the user is currently blocked
1552                                 LogEventsList::showLogExtract(
1553                                         $wgOut,
1554                                         'block',
1555                                         $user->getUserPage(),
1556                                         '',
1557                                         array(
1558                                                 'lim' => 1,
1559                                                 'showIfEmpty' => false,
1560                                                 'msgKey' => array(
1561                                                         'blocked-notice-logextract',
1562                                                         $user->getName() # Support GENDER in notice
1563                                                 )
1564                                         )
1565                                 );
1566                         }
1567                 }
1568                 # Try to add a custom edit intro, or use the standard one if this is not possible.
1569                 if ( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
1570                         if ( $wgUser->isLoggedIn() ) {
1571                                 $wgOut->wrapWikiMsg( "<div class=\"mw-newarticletext\">\n$1\n</div>", 'newarticletext' );
1572                         } else {
1573                                 $wgOut->wrapWikiMsg( "<div class=\"mw-newarticletextanon\">\n$1\n</div>", 'newarticletextanon' );
1574                         }
1575                 }
1576                 # Give a notice if the user is editing a deleted/moved page...
1577                 if ( !$this->mTitle->exists() ) {
1578                         LogEventsList::showLogExtract( $wgOut, array( 'delete', 'move' ), $this->mTitle,
1579                                 '', array( 'lim' => 10,
1580                                            'conds' => array( "log_action != 'revision'" ),
1581                                            'showIfEmpty' => false,
1582                                            'msgKey' => array( 'recreate-moveddeleted-warn') )
1583                         );
1584                 }
1585         }
1586
1587         /**
1588          * Attempt to show a custom editing introduction, if supplied
1589          *
1590          * @return bool
1591          */
1592         protected function showCustomIntro() {
1593                 if ( $this->editintro ) {
1594                         $title = Title::newFromText( $this->editintro );
1595                         if ( $title instanceof Title && $title->exists() && $title->userCan( 'read' ) ) {
1596                                 global $wgOut;
1597                                 // Added using template syntax, to take <noinclude>'s into account.
1598                                 $wgOut->addWikiTextTitleTidy( '{{:' . $title->getFullText() . '}}', $this->mTitle );
1599                                 return true;
1600                         } else {
1601                                 return false;
1602                         }
1603                 } else {
1604                         return false;
1605                 }
1606         }
1607
1608         /**
1609          * Send the edit form and related headers to $wgOut
1610          * @param $formCallback Callback that takes an OutputPage parameter; will be called
1611          *     during form output near the top, for captchas and the like.
1612          */
1613         function showEditForm( $formCallback = null ) {
1614                 global $wgOut, $wgUser;
1615
1616                 wfProfileIn( __METHOD__ );
1617
1618                 #need to parse the preview early so that we know which templates are used,
1619                 #otherwise users with "show preview after edit box" will get a blank list
1620                 #we parse this near the beginning so that setHeaders can do the title
1621                 #setting work instead of leaving it in getPreviewText
1622                 $previewOutput = '';
1623                 if ( $this->formtype == 'preview' ) {
1624                         $previewOutput = $this->getPreviewText();
1625                 }
1626
1627                 wfRunHooks( 'EditPage::showEditForm:initial', array( &$this ) );
1628
1629                 $this->setHeaders();
1630
1631                 if ( $this->showHeader() === false ) {
1632                         wfProfileOut( __METHOD__ );
1633                         return;
1634                 }
1635
1636                 $wgOut->addHTML( $this->editFormPageTop );
1637
1638                 if ( $wgUser->getOption( 'previewontop' ) ) {
1639                         $this->displayPreviewArea( $previewOutput, true );
1640                 }
1641
1642                 $wgOut->addHTML( $this->editFormTextTop );
1643
1644                 $showToolbar = true;
1645                 if ( $this->wasDeletedSinceLastEdit() ) {
1646                         if ( $this->formtype == 'save' ) {
1647                                 // Hide the toolbar and edit area, user can click preview to get it back
1648                                 // Add an confirmation checkbox and explanation.
1649                                 $showToolbar = false;
1650                         } else {
1651                                 $wgOut->wrapWikiMsg( "<div class='error mw-deleted-while-editing'>\n$1\n</div>",
1652                                         'deletedwhileediting' );
1653                         }
1654                 }
1655
1656                 $wgOut->addHTML( Html::openElement( 'form', array( 'id' => 'editform', 'name' => 'editform',
1657                         'method' => 'post', 'action' => $this->getActionURL( $this->getContextTitle() ),
1658                         'enctype' => 'multipart/form-data' ) ) );
1659
1660                 if ( is_callable( $formCallback ) ) {
1661                         call_user_func_array( $formCallback, array( &$wgOut ) );
1662                 }
1663
1664                 wfRunHooks( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );
1665
1666                 // Put these up at the top to ensure they aren't lost on early form submission
1667                 $this->showFormBeforeText();
1668
1669                 if ( $this->wasDeletedSinceLastEdit() && 'save' == $this->formtype ) {
1670                         $username = $this->lastDelete->user_name;
1671                         $comment = $this->lastDelete->log_comment;
1672
1673                         // It is better to not parse the comment at all than to have templates expanded in the middle
1674                         // TODO: can the checkLabel be moved outside of the div so that wrapWikiMsg could be used?
1675                         $key = $comment === ''
1676                                 ? 'confirmrecreate-noreason'
1677                                 : 'confirmrecreate';
1678                         $wgOut->addHTML(
1679                                 '<div class="mw-confirm-recreate">' .
1680                                 wfMsgExt( $key, 'parseinline', $username, "<nowiki>$comment</nowiki>" ) .
1681                                 Xml::checkLabel( wfMsg( 'recreate' ), 'wpRecreate', 'wpRecreate', false,
1682                                         array( 'title' => Linker::titleAttrib( 'recreate' ), 'tabindex' => 1, 'id' => 'wpRecreate' )
1683                                 ) .
1684                                 '</div>'
1685                         );
1686                 }
1687
1688                 # If a blank edit summary was previously provided, and the appropriate
1689                 # user preference is active, pass a hidden tag as wpIgnoreBlankSummary. This will stop the
1690                 # user being bounced back more than once in the event that a summary
1691                 # is not required.
1692                 #####
1693                 # For a bit more sophisticated detection of blank summaries, hash the
1694                 # automatic one and pass that in the hidden field wpAutoSummary.
1695                 if ( $this->missingSummary || ( $this->section == 'new' && $this->nosummary ) ) {
1696                         $wgOut->addHTML( Html::hidden( 'wpIgnoreBlankSummary', true ) );
1697                 }
1698
1699                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
1700                 $wgOut->addHTML( Html::hidden( 'wpAutoSummary', $autosumm ) );
1701
1702                 $wgOut->addHTML( Html::hidden( 'oldid', $this->oldid ) );
1703
1704                 if ( $this->section == 'new' ) {
1705                         $this->showSummaryInput( true, $this->summary );
1706                         $wgOut->addHTML( $this->getSummaryPreview( true, $this->summary ) );
1707                 }
1708
1709                 $wgOut->addHTML( $this->editFormTextBeforeContent );
1710
1711                 if ( !$this->isCssJsSubpage && $showToolbar && $wgUser->getOption( 'showtoolbar' ) ) {
1712                         $wgOut->addHTML( EditPage::getEditToolbar() );
1713                 }
1714
1715                 if ( $this->isConflict ) {
1716                         // In an edit conflict bypass the overrideable content form method
1717                         // and fallback to the raw wpTextbox1 since editconflicts can't be
1718                         // resolved between page source edits and custom ui edits using the
1719                         // custom edit ui.
1720                         $this->textbox2 = $this->textbox1;
1721                         $this->textbox1 = $this->getCurrentText();
1722
1723                         $this->showTextbox1();
1724                 } else {
1725                         $this->showContentForm();
1726                 }
1727
1728                 $wgOut->addHTML( $this->editFormTextAfterContent );
1729
1730                 $wgOut->addWikiText( $this->getCopywarn() );
1731
1732                 $wgOut->addHTML( $this->editFormTextAfterWarn );
1733
1734                 $this->showStandardInputs();
1735
1736                 $this->showFormAfterText();
1737
1738                 $this->showTosSummary();
1739
1740                 $this->showEditTools();
1741
1742                 $wgOut->addHTML( $this->editFormTextAfterTools . "\n" );
1743
1744                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'templatesUsed' ),
1745                         Linker::formatTemplates( $this->getTemplates(), $this->preview, $this->section != '' ) ) );
1746
1747                 $wgOut->addHTML( Html::rawElement( 'div', array( 'class' => 'hiddencats' ),
1748                         Linker::formatHiddenCategories( $this->mArticle->getHiddenCategories() ) ) );
1749
1750                 if ( $this->isConflict ) {
1751                         $this->showConflict();
1752                 }
1753
1754                 $wgOut->addHTML( $this->editFormTextBottom . "\n</form>\n" );
1755
1756                 if ( !$wgUser->getOption( 'previewontop' ) ) {
1757                         $this->displayPreviewArea( $previewOutput, false );
1758                 }
1759
1760                 wfProfileOut( __METHOD__ );
1761         }
1762
1763         /**
1764          * Extract the section title from current section text, if any.
1765          *
1766          * @param string $text
1767          * @return Mixed|string or false
1768          */
1769         public static function extractSectionTitle( $text ) {
1770                 preg_match( "/^(=+)(.+)\\1(\n|$)/i", $text, $matches );
1771                 if ( !empty( $matches[2] ) ) {
1772                         global $wgParser;
1773                         return $wgParser->stripSectionName(trim($matches[2]));
1774                 } else {
1775                         return false;
1776                 }
1777         }
1778
1779         protected function showHeader() {
1780                 global $wgOut, $wgUser, $wgMaxArticleSize, $wgLang;
1781
1782                 if ( $this->mTitle->isTalkPage() ) {
1783                         $wgOut->addWikiMsg( 'talkpagetext' );
1784                 }
1785
1786                 # Optional notices on a per-namespace and per-page basis
1787                 $editnotice_ns   = 'editnotice-'.$this->mTitle->getNamespace();
1788                 $editnotice_ns_message = wfMessage( $editnotice_ns )->inContentLanguage();
1789                 if ( $editnotice_ns_message->exists() ) {
1790                         $wgOut->addWikiText( $editnotice_ns_message->plain() );
1791                 }
1792                 if ( MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
1793                         $parts = explode( '/', $this->mTitle->getDBkey() );
1794                         $editnotice_base = $editnotice_ns;
1795                         while ( count( $parts ) > 0 ) {
1796                                 $editnotice_base .= '-'.array_shift( $parts );
1797                                 $editnotice_base_msg = wfMessage( $editnotice_base )->inContentLanguage();
1798                                 if ( $editnotice_base_msg->exists() ) {
1799                                         $wgOut->addWikiText( $editnotice_base_msg->plain()  );
1800                                 }
1801                         }
1802                 } else {
1803                         # Even if there are no subpages in namespace, we still don't want / in MW ns.
1804                         $editnoticeText = $editnotice_ns . '-' . str_replace( '/', '-', $this->mTitle->getDBkey() );
1805                         $editnoticeMsg = wfMessage( $editnoticeText )->inContentLanguage();
1806                         if ( $editnoticeMsg->exists() ) {
1807                                 $wgOut->addWikiText( $editnoticeMsg->plain() );
1808                         }
1809                 }
1810
1811                 if ( $this->isConflict ) {
1812                         $wgOut->wrapWikiMsg( "<div class='mw-explainconflict'>\n$1\n</div>", 'explainconflict' );
1813                         $this->edittime = $this->mArticle->getTimestamp();
1814                 } else {
1815                         if ( $this->section != '' && !$this->isSectionEditSupported() ) {
1816                                 // We use $this->section to much before this and getVal('wgSection') directly in other places
1817                                 // at this point we can't reset $this->section to '' to fallback to non-section editing.
1818                                 // Someone is welcome to try refactoring though
1819                                 $wgOut->showErrorPage( 'sectioneditnotsupported-title', 'sectioneditnotsupported-text' );
1820                                 return false;
1821                         }
1822
1823                         if ( $this->section != '' && $this->section != 'new' ) {
1824                                 if ( !$this->summary && !$this->preview && !$this->diff ) {
1825                                         $sectionTitle = self::extractSectionTitle( $this->textbox1 );
1826                                         if ( $sectionTitle !== false ) {
1827                                                 $this->summary = "/* $sectionTitle */ ";
1828                                         }
1829                                 }
1830                         }
1831
1832                         if ( $this->missingComment ) {
1833                                 $wgOut->wrapWikiMsg( "<div id='mw-missingcommenttext'>\n$1\n</div>", 'missingcommenttext' );
1834                         }
1835
1836                         if ( $this->missingSummary && $this->section != 'new' ) {
1837                                 $wgOut->wrapWikiMsg( "<div id='mw-missingsummary'>\n$1\n</div>", 'missingsummary' );
1838                         }
1839
1840                         if ( $this->missingSummary && $this->section == 'new' ) {
1841                                 $wgOut->wrapWikiMsg( "<div id='mw-missingcommentheader'>\n$1\n</div>", 'missingcommentheader' );
1842                         }
1843
1844                         if ( $this->hookError !== '' ) {
1845                                 $wgOut->addWikiText( $this->hookError );
1846                         }
1847
1848                         if ( !$this->checkUnicodeCompliantBrowser() ) {
1849                                 $wgOut->addWikiMsg( 'nonunicodebrowser' );
1850                         }
1851
1852                         if ( $this->section != 'new' ) {
1853                                 $revision = $this->mArticle->getRevisionFetched();
1854                                 if ( $revision ) {
1855                                         // Let sysop know that this will make private content public if saved
1856
1857                                         if ( !$revision->userCan( Revision::DELETED_TEXT ) ) {
1858                                                 $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n", 'rev-deleted-text-permission' );
1859                                         } elseif ( $revision->isDeleted( Revision::DELETED_TEXT ) ) {
1860                                                 $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n", 'rev-deleted-text-view' );
1861                                         }
1862
1863                                         if ( !$revision->isCurrent() ) {
1864                                                 $this->mArticle->setOldSubtitle( $revision->getId() );
1865                                                 $wgOut->addWikiMsg( 'editingold' );
1866                                         }
1867                                 } elseif ( $this->mTitle->exists() ) {
1868                                         // Something went wrong
1869
1870                                         $wgOut->wrapWikiMsg( "<div class='errorbox'>\n$1\n</div>\n",
1871                                                 array( 'missing-article', $this->mTitle->getPrefixedText(),
1872                                                 wfMsgNoTrans( 'missingarticle-rev', $this->oldid ) ) );
1873                                 }
1874                         }
1875                 }
1876
1877                 if ( wfReadOnly() ) {
1878                         $wgOut->wrapWikiMsg( "<div id=\"mw-read-only-warning\">\n$1\n</div>", array( 'readonlywarning', wfReadOnlyReason() ) );
1879                 } elseif ( $wgUser->isAnon() ) {
1880                         if ( $this->formtype != 'preview' ) {
1881                                 $wgOut->wrapWikiMsg( "<div id=\"mw-anon-edit-warning\">\n$1</div>", 'anoneditwarning' );
1882                         } else {
1883                                 $wgOut->wrapWikiMsg( "<div id=\"mw-anon-preview-warning\">\n$1</div>", 'anonpreviewwarning' );
1884                         }
1885                 } else {
1886                         if ( $this->isCssJsSubpage ) {
1887                                 # Check the skin exists
1888                                 if ( $this->isWrongCaseCssJsPage ) {
1889                                         $wgOut->wrapWikiMsg( "<div class='error' id='mw-userinvalidcssjstitle'>\n$1\n</div>", array( 'userinvalidcssjstitle', $this->mTitle->getSkinFromCssJsSubpage() ) );
1890                                 }
1891                                 if ( $this->formtype !== 'preview' ) {
1892                                         if ( $this->isCssSubpage )
1893                                                 $wgOut->wrapWikiMsg( "<div id='mw-usercssyoucanpreview'>\n$1\n</div>", array( 'usercssyoucanpreview' ) );
1894                                         if ( $this->isJsSubpage )
1895                                                 $wgOut->wrapWikiMsg( "<div id='mw-userjsyoucanpreview'>\n$1\n</div>", array( 'userjsyoucanpreview' ) );
1896                                 }
1897                         }
1898                 }
1899
1900                 if ( $this->mTitle->getNamespace() != NS_MEDIAWIKI && $this->mTitle->isProtected( 'edit' ) ) {
1901                         # Is the title semi-protected?
1902                         if ( $this->mTitle->isSemiProtected() ) {
1903                                 $noticeMsg = 'semiprotectedpagewarning';
1904                         } else {
1905                                 # Then it must be protected based on static groups (regular)
1906                                 $noticeMsg = 'protectedpagewarning';
1907                         }
1908                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle, '',
1909                                 array( 'lim' => 1, 'msgKey' => array( $noticeMsg ) ) );
1910                 }
1911                 if ( $this->mTitle->isCascadeProtected() ) {
1912                         # Is this page under cascading protection from some source pages?
1913                         list($cascadeSources, /* $restrictions */) = $this->mTitle->getCascadeProtectionSources();
1914                         $notice = "<div class='mw-cascadeprotectedwarning'>\n$1\n";
1915                         $cascadeSourcesCount = count( $cascadeSources );
1916                         if ( $cascadeSourcesCount > 0 ) {
1917                                 # Explain, and list the titles responsible
1918                                 foreach( $cascadeSources as $page ) {
1919                                         $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
1920                                 }
1921                         }
1922                         $notice .= '</div>';
1923                         $wgOut->wrapWikiMsg( $notice, array( 'cascadeprotectedwarning', $cascadeSourcesCount ) );
1924                 }
1925                 if ( !$this->mTitle->exists() && $this->mTitle->getRestrictions( 'create' ) ) {
1926                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle, '',
1927                                 array(  'lim' => 1,
1928                                         'showIfEmpty' => false,
1929                                         'msgKey' => array( 'titleprotectedwarning' ),
1930                                         'wrap' => "<div class=\"mw-titleprotectedwarning\">\n$1</div>" ) );
1931                 }
1932
1933                 if ( $this->kblength === false ) {
1934                         $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
1935                 }
1936
1937                 if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
1938                         $wgOut->wrapWikiMsg( "<div class='error' id='mw-edit-longpageerror'>\n$1\n</div>",
1939                                 array( 'longpageerror', $wgLang->formatNum( $this->kblength ), $wgLang->formatNum( $wgMaxArticleSize ) ) );
1940                 } else {
1941                         if( !wfMessage('longpage-hint')->isDisabled() ) {
1942                                 $wgOut->wrapWikiMsg( "<div id='mw-edit-longpage-hint'>\n$1\n</div>",
1943                                         array( 'longpage-hint', $wgLang->formatSize( strlen( $this->textbox1 ) ), strlen( $this->textbox1 ) )
1944                                 );
1945                         }
1946                 }
1947         }
1948
1949         /**
1950          * Standard summary input and label (wgSummary), abstracted so EditPage
1951          * subclasses may reorganize the form.
1952          * Note that you do not need to worry about the label's for=, it will be
1953          * inferred by the id given to the input. You can remove them both by
1954          * passing array( 'id' => false ) to $userInputAttrs.
1955          *
1956          * @param $summary string The value of the summary input
1957          * @param $labelText string The html to place inside the label
1958          * @param $inputAttrs array of attrs to use on the input
1959          * @param $spanLabelAttrs array of attrs to use on the span inside the label
1960          *
1961          * @return array An array in the format array( $label, $input )
1962          */
1963         function getSummaryInput($summary = "", $labelText = null, $inputAttrs = null, $spanLabelAttrs = null) {
1964                 //Note: the maxlength is overriden in JS to 250 and to make it use UTF-8 bytes, not characters.
1965                 $inputAttrs = ( is_array($inputAttrs) ? $inputAttrs : array() ) + array(
1966                         'id' => 'wpSummary',
1967                         'maxlength' => '200',
1968                         'tabindex' => '1',
1969                         'size' => 60,
1970                         'spellcheck' => 'true',
1971                 ) + Linker::tooltipAndAccesskeyAttribs( 'summary' );
1972
1973                 $spanLabelAttrs = ( is_array($spanLabelAttrs) ? $spanLabelAttrs : array() ) + array(
1974                         'class' => $this->missingSummary ? 'mw-summarymissed' : 'mw-summary',
1975                         'id' => "wpSummaryLabel"
1976                 );
1977
1978                 $label = null;
1979                 if ( $labelText ) {
1980                         $label = Xml::tags( 'label', $inputAttrs['id'] ? array( 'for' => $inputAttrs['id'] ) : null, $labelText );
1981                         $label = Xml::tags( 'span', $spanLabelAttrs, $label );
1982                 }
1983
1984                 $input = Html::input( 'wpSummary', $summary, 'text', $inputAttrs );
1985
1986                 return array( $label, $input );
1987         }
1988
1989         /**
1990          * @param $isSubjectPreview Boolean: true if this is the section subject/title
1991          *                          up top, or false if this is the comment summary
1992          *                          down below the textarea
1993          * @param $summary String: The text of the summary to display
1994          * @return String
1995          */
1996         protected function showSummaryInput( $isSubjectPreview, $summary = "" ) {
1997                 global $wgOut, $wgContLang;
1998                 # Add a class if 'missingsummary' is triggered to allow styling of the summary line
1999                 $summaryClass = $this->missingSummary ? 'mw-summarymissed' : 'mw-summary';
2000                 if ( $isSubjectPreview ) {
2001                         if ( $this->nosummary ) {
2002                                 return;
2003                         }
2004                 } else {
2005                         if ( !$this->mShowSummaryField ) {
2006                                 return;
2007                         }
2008                 }
2009                 $summary = $wgContLang->recodeForEdit( $summary );
2010                 $labelText = wfMsgExt( $isSubjectPreview ? 'subject' : 'summary', 'parseinline' );
2011                 list($label, $input) = $this->getSummaryInput($summary, $labelText, array( 'class' => $summaryClass ), array());
2012                 $wgOut->addHTML("{$label} {$input}");
2013         }
2014
2015         /**
2016          * @param $isSubjectPreview Boolean: true if this is the section subject/title
2017          *                          up top, or false if this is the comment summary
2018          *                          down below the textarea
2019          * @param $summary String: the text of the summary to display
2020          * @return String
2021          */
2022         protected function getSummaryPreview( $isSubjectPreview, $summary = "" ) {
2023                 if ( !$summary || ( !$this->preview && !$this->diff ) )
2024                         return "";
2025
2026                 global $wgParser;
2027
2028                 if ( $isSubjectPreview )
2029                         $summary = wfMsgForContent( 'newsectionsummary', $wgParser->stripSectionName( $summary ) );
2030
2031                 $message = $isSubjectPreview ? 'subject-preview' : 'summary-preview';
2032
2033                 $summary = wfMsgExt( $message, 'parseinline' ) . Linker::commentBlock( $summary, $this->mTitle, $isSubjectPreview );
2034                 return Xml::tags( 'div', array( 'class' => 'mw-summary-preview' ), $summary );
2035         }
2036
2037         protected function showFormBeforeText() {
2038                 global $wgOut;
2039                 $section = htmlspecialchars( $this->section );
2040                 $wgOut->addHTML( <<<HTML
2041 <input type='hidden' value="{$section}" name="wpSection" />
2042 <input type='hidden' value="{$this->starttime}" name="wpStarttime" />
2043 <input type='hidden' value="{$this->edittime}" name="wpEdittime" />
2044 <input type='hidden' value="{$this->scrolltop}" name="wpScrolltop" id="wpScrolltop" />
2045
2046 HTML
2047                 );
2048                 if ( !$this->checkUnicodeCompliantBrowser() )
2049                         $wgOut->addHTML(Html::hidden( 'safemode', '1' ));
2050         }
2051
2052         protected function showFormAfterText() {
2053                 global $wgOut, $wgUser;
2054                 /**
2055                  * To make it harder for someone to slip a user a page
2056                  * which submits an edit form to the wiki without their
2057                  * knowledge, a random token is associated with the login
2058                  * session. If it's not passed back with the submission,
2059                  * we won't save the page, or render user JavaScript and
2060                  * CSS previews.
2061                  *
2062                  * For anon editors, who may not have a session, we just
2063                  * include the constant suffix to prevent editing from
2064                  * broken text-mangling proxies.
2065                  */
2066                 $wgOut->addHTML( "\n" . Html::hidden( "wpEditToken", $wgUser->getEditToken() ) . "\n" );
2067         }
2068
2069         /**
2070          * Subpage overridable method for printing the form for page content editing
2071          * By default this simply outputs wpTextbox1
2072          * Subclasses can override this to provide a custom UI for editing;
2073          * be it a form, or simply wpTextbox1 with a modified content that will be
2074          * reverse modified when extracted from the post data.
2075          * Note that this is basically the inverse for importContentFormData
2076          */
2077         protected function showContentForm() {
2078                 $this->showTextbox1();
2079         }
2080
2081         /**
2082          * Method to output wpTextbox1
2083          * The $textoverride method can be used by subclasses overriding showContentForm
2084          * to pass back to this method.
2085          *
2086          * @param $customAttribs An array of html attributes to use in the textarea
2087          * @param $textoverride String: optional text to override $this->textarea1 with
2088          */
2089         protected function showTextbox1( $customAttribs = null, $textoverride = null ) {
2090                 if ( $this->wasDeletedSinceLastEdit() && $this->formtype == 'save' ) {
2091                         $attribs = array( 'style' => 'display:none;' );
2092                 } else {
2093                         $classes = array(); // Textarea CSS
2094                         if ( $this->mTitle->getNamespace() != NS_MEDIAWIKI && $this->mTitle->isProtected( 'edit' ) ) {
2095                                 # Is the title semi-protected?
2096                                 if ( $this->mTitle->isSemiProtected() ) {
2097                                         $classes[] = 'mw-textarea-sprotected';
2098                                 } else {
2099                                         # Then it must be protected based on static groups (regular)
2100                                         $classes[] = 'mw-textarea-protected';
2101                                 }
2102                                 # Is the title cascade-protected?
2103                                 if ( $this->mTitle->isCascadeProtected() ) {
2104                                         $classes[] = 'mw-textarea-cprotected';
2105                                 }
2106                         }
2107
2108                         $attribs = array( 'tabindex' => 1 );
2109
2110                         if ( is_array( $customAttribs ) ) {
2111                                 $attribs += $customAttribs;
2112                         }
2113
2114                         if ( count( $classes ) ) {
2115                                 if ( isset( $attribs['class'] ) ) {
2116                                         $classes[] = $attribs['class'];
2117                                 }
2118                                 $attribs['class'] = implode( ' ', $classes );
2119                         }
2120                 }
2121
2122                 $this->showTextbox( $textoverride !== null ? $textoverride : $this->textbox1, 'wpTextbox1', $attribs );
2123         }
2124
2125         protected function showTextbox2() {
2126                 $this->showTextbox( $this->textbox2, 'wpTextbox2', array( 'tabindex' => 6, 'readonly' ) );
2127         }
2128
2129         protected function showTextbox( $content, $name, $customAttribs = array() ) {
2130                 global $wgOut, $wgUser;
2131
2132                 $wikitext = $this->safeUnicodeOutput( $content );
2133                 if ( strval($wikitext) !== '' ) {
2134                         // Ensure there's a newline at the end, otherwise adding lines
2135                         // is awkward.
2136                         // But don't add a newline if the ext is empty, or Firefox in XHTML
2137                         // mode will show an extra newline. A bit annoying.
2138                         $wikitext .= "\n";
2139                 }
2140
2141                 $attribs = $customAttribs + array(
2142                         'accesskey' => ',',
2143                         'id'   => $name,
2144                         'rows' => $wgUser->getIntOption( 'rows' ),
2145                         'style' => '' // avoid php notices when appending preferences (appending allows customAttribs['style'] to still work
2146                 );
2147
2148                 $pageLang = $this->mTitle->getPageLanguage();
2149                 $attribs['lang'] = $pageLang->getCode();
2150                 $attribs['dir'] = $pageLang->getDir();
2151
2152                 $wgOut->addHTML( Html::textarea( $name, $wikitext, $attribs ) );
2153         }
2154
2155         protected function displayPreviewArea( $previewOutput, $isOnTop = false ) {
2156                 global $wgOut;
2157                 $classes = array();
2158                 if ( $isOnTop )
2159                         $classes[] = 'ontop';
2160
2161                 $attribs = array( 'id' => 'wikiPreview', 'class' => implode( ' ', $classes ) );
2162
2163                 if ( $this->formtype != 'preview' )
2164                         $attribs['style'] = 'display: none;';
2165
2166                 $wgOut->addHTML( Xml::openElement( 'div', $attribs ) );
2167
2168                 if ( $this->formtype == 'preview' ) {
2169                         $this->showPreview( $previewOutput );
2170                 }
2171
2172                 $wgOut->addHTML( '</div>' );
2173
2174                 if ( $this->formtype == 'diff') {
2175                         $this->showDiff();
2176                 }
2177         }
2178
2179         /**
2180          * Append preview output to $wgOut.
2181          * Includes category rendering if this is a category page.
2182          *
2183          * @param $text String: the HTML to be output for the preview.
2184          */
2185         protected function showPreview( $text ) {
2186                 global $wgOut;
2187                 if ( $this->mTitle->getNamespace() == NS_CATEGORY) {
2188                         $this->mArticle->openShowCategory();
2189                 }
2190                 # This hook seems slightly odd here, but makes things more
2191                 # consistent for extensions.
2192                 wfRunHooks( 'OutputPageBeforeHTML',array( &$wgOut, &$text ) );
2193                 $wgOut->addHTML( $text );
2194                 if ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
2195                         $this->mArticle->closeShowCategory();
2196                 }
2197         }
2198
2199         /**
2200          * Get a diff between the current contents of the edit box and the
2201          * version of the page we're editing from.
2202          *
2203          * If this is a section edit, we'll replace the section as for final
2204          * save and then make a comparison.
2205          */
2206         function showDiff() {
2207                 global $wgUser, $wgContLang, $wgParser, $wgOut;
2208
2209                 $oldtext = $this->getOriginalContent();
2210                 $newtext = $this->mArticle->replaceSection(
2211                         $this->section, $this->textbox1, $this->summary, $this->edittime );
2212
2213                 wfRunHooks( 'EditPageGetDiffText', array( $this, &$newtext ) );
2214
2215                 $popts = ParserOptions::newFromUserAndLang( $wgUser, $wgContLang );
2216                 $newtext = $wgParser->preSaveTransform( $newtext, $this->mTitle, $wgUser, $popts );
2217
2218                 if ( $oldtext !== false  || $newtext != '' ) {
2219                         $oldtitle = wfMsgExt( 'currentrev', array( 'parseinline' ) );
2220                         $newtitle = wfMsgExt( 'yourtext', array( 'parseinline' ) );
2221
2222                         $de = new DifferenceEngine( $this->mArticle->getContext() );
2223                         $de->setText( $oldtext, $newtext );
2224                         $difftext = $de->getDiff( $oldtitle, $newtitle );
2225                         $de->showDiffStyle();
2226                 } else {
2227                         $difftext = '';
2228                 }
2229
2230                 $wgOut->addHTML( '<div id="wikiDiff">' . $difftext . '</div>' );
2231         }
2232
2233         /**
2234          * Give a chance for site and per-namespace customizations of
2235          * terms of service summary link that might exist separately
2236          * from the copyright notice.
2237          *
2238          * This will display between the save button and the edit tools,
2239          * so should remain short!
2240          */
2241         protected function showTosSummary() {
2242                 $msg = 'editpage-tos-summary';
2243                 wfRunHooks( 'EditPageTosSummary', array( $this->mTitle, &$msg ) );
2244                 if( !wfMessage( $msg )->isDisabled() ) {
2245                         global $wgOut;
2246                         $wgOut->addHTML( '<div class="mw-tos-summary">' );
2247                         $wgOut->addWikiMsg( $msg );
2248                         $wgOut->addHTML( '</div>' );
2249                 }
2250         }
2251
2252         protected function showEditTools() {
2253                 global $wgOut;
2254                 $wgOut->addHTML( '<div class="mw-editTools">' .
2255                         wfMessage( 'edittools' )->inContentLanguage()->parse() .
2256                         '</div>' );
2257         }
2258
2259         protected function getCopywarn() {
2260                 global $wgRightsText;
2261                 if ( $wgRightsText ) {
2262                         $copywarnMsg = array( 'copyrightwarning',
2263                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
2264                                 $wgRightsText );
2265                 } else {
2266                         $copywarnMsg = array( 'copyrightwarning2',
2267                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]' );
2268                 }
2269                 // Allow for site and per-namespace customization of contribution/copyright notice.
2270                 wfRunHooks( 'EditPageCopyrightWarning', array( $this->mTitle, &$copywarnMsg ) );
2271
2272                 return "<div id=\"editpage-copywarn\">\n" .
2273                         call_user_func_array("wfMsgNoTrans", $copywarnMsg) . "\n</div>";
2274         }
2275
2276         protected function showStandardInputs( &$tabindex = 2 ) {
2277                 global $wgOut;
2278                 $wgOut->addHTML( "<div class='editOptions'>\n" );
2279
2280                 if ( $this->section != 'new' ) {
2281                         $this->showSummaryInput( false, $this->summary );
2282                         $wgOut->addHTML( $this->getSummaryPreview( false, $this->summary ) );
2283                 }
2284
2285                 $checkboxes = $this->getCheckboxes( $tabindex,
2286                         array( 'minor' => $this->minoredit, 'watch' => $this->watchthis ) );
2287                 $wgOut->addHTML( "<div class='editCheckboxes'>" . implode( $checkboxes, "\n" ) . "</div>\n" );
2288                 $wgOut->addHTML( "<div class='editButtons'>\n" );
2289                 $wgOut->addHTML( implode( $this->getEditButtons( $tabindex ), "\n" ) . "\n" );
2290
2291                 $cancel = $this->getCancelLink();
2292                 if ( $cancel !== '' ) {
2293                         $cancel .= wfMsgExt( 'pipe-separator' , 'escapenoentities' );
2294                 }
2295                 $edithelpurl = Skin::makeInternalOrExternalUrl( wfMsgForContent( 'edithelppage' ) );
2296                 $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
2297                         htmlspecialchars( wfMsg( 'edithelp' ) ).'</a> '.
2298                         htmlspecialchars( wfMsg( 'newwindow' ) );
2299                 $wgOut->addHTML( "      <span class='editHelp'>{$cancel}{$edithelp}</span>\n" );
2300                 $wgOut->addHTML( "</div><!-- editButtons -->\n</div><!-- editOptions -->\n" );
2301         }
2302
2303         /**
2304          * Show an edit conflict. textbox1 is already shown in showEditForm().
2305          * If you want to use another entry point to this function, be careful.
2306          */
2307         protected function showConflict() {
2308                 global $wgOut;
2309
2310                 if ( wfRunHooks( 'EditPageBeforeConflictDiff', array( &$this, &$wgOut ) ) ) {
2311                         $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
2312
2313                         $de = new DifferenceEngine( $this->mArticle->getContext() );
2314                         $de->setText( $this->textbox2, $this->textbox1 );
2315                         $de->showDiff( wfMsgExt( 'yourtext', 'parseinline' ), wfMsg( 'storedversion' ) );
2316
2317                         $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
2318                         $this->showTextbox2();
2319                 }
2320         }
2321
2322         /**
2323          * @return string
2324          */
2325         public function getCancelLink() {
2326                 $cancelParams = array();
2327                 if ( !$this->isConflict && $this->oldid > 0 ) {
2328                         $cancelParams['oldid'] = $this->oldid;
2329                 }
2330
2331                 return Linker::linkKnown(
2332                         $this->getContextTitle(),
2333                         wfMsgExt( 'cancel', array( 'parseinline' ) ),
2334                         array( 'id' => 'mw-editform-cancel' ),
2335                         $cancelParams
2336                 );
2337         }
2338
2339         /**
2340          * Returns the URL to use in the form's action attribute.
2341          * This is used by EditPage subclasses when simply customizing the action
2342          * variable in the constructor is not enough. This can be used when the
2343          * EditPage lives inside of a Special page rather than a custom page action.
2344          *
2345          * @param $title Title object for which is being edited (where we go to for &action= links)
2346          * @return string
2347          */
2348         protected function getActionURL( Title $title ) {
2349                 return $title->getLocalURL( array( 'action' => $this->action ) );
2350         }
2351
2352         /**
2353          * Check if a page was deleted while the user was editing it, before submit.
2354          * Note that we rely on the logging table, which hasn't been always there,
2355          * but that doesn't matter, because this only applies to brand new
2356          * deletes.
2357          */
2358         protected function wasDeletedSinceLastEdit() {
2359                 if ( $this->deletedSinceEdit !== null ) {
2360                         return $this->deletedSinceEdit;
2361                 }
2362
2363                 $this->deletedSinceEdit = false;
2364
2365                 if ( $this->mTitle->isDeletedQuick() ) {
2366                         $this->lastDelete = $this->getLastDelete();
2367                         if ( $this->lastDelete ) {
2368                                 $deleteTime = wfTimestamp( TS_MW, $this->lastDelete->log_timestamp );
2369                                 if ( $deleteTime > $this->starttime ) {
2370                                         $this->deletedSinceEdit = true;
2371                                 }
2372                         }
2373                 }
2374
2375                 return $this->deletedSinceEdit;
2376         }
2377
2378         protected function getLastDelete() {
2379                 $dbr = wfGetDB( DB_SLAVE );
2380                 $data = $dbr->selectRow(
2381                         array( 'logging', 'user' ),
2382                         array( 'log_type',
2383                                    'log_action',
2384                                    'log_timestamp',
2385                                    'log_user',
2386                                    'log_namespace',
2387                                    'log_title',
2388                                    'log_comment',
2389                                    'log_params',
2390                                    'log_deleted',
2391                                    'user_name' ),
2392                         array( 'log_namespace' => $this->mTitle->getNamespace(),
2393                                    'log_title' => $this->mTitle->getDBkey(),
2394                                    'log_type' => 'delete',
2395                                    'log_action' => 'delete',
2396                                    'user_id=log_user' ),
2397                         __METHOD__,
2398                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' )
2399                 );
2400                 // Quick paranoid permission checks...
2401                 if( is_object( $data ) ) {
2402                         if( $data->log_deleted & LogPage::DELETED_USER )
2403                                 $data->user_name = wfMsgHtml( 'rev-deleted-user' );
2404                         if( $data->log_deleted & LogPage::DELETED_COMMENT )
2405                                 $data->log_comment = wfMsgHtml( 'rev-deleted-comment' );
2406                 }
2407                 return $data;
2408         }
2409
2410         /**
2411          * Get the rendered text for previewing.
2412          * @return string
2413          */
2414         function getPreviewText() {
2415                 global $wgOut, $wgUser, $wgParser, $wgRawHtml;
2416
2417                 wfProfileIn( __METHOD__ );
2418
2419                 if ( $wgRawHtml && !$this->mTokenOk ) {
2420                         // Could be an offsite preview attempt. This is very unsafe if
2421                         // HTML is enabled, as it could be an attack.
2422                         $parsedNote = '';
2423                         if ( $this->textbox1 !== '' ) {
2424                                 // Do not put big scary notice, if previewing the empty
2425                                 // string, which happens when you initially edit
2426                                 // a category page, due to automatic preview-on-open.
2427                                 $parsedNote = $wgOut->parse( "<div class='previewnote'>" .
2428                                         wfMsg( 'session_fail_preview_html' ) . "</div>", true, /* interface */true );
2429                         }
2430                         wfProfileOut( __METHOD__ );
2431                         return $parsedNote;
2432                 }
2433
2434                 if ( $this->mTriedSave && !$this->mTokenOk ) {
2435                         if ( $this->mTokenOkExceptSuffix ) {
2436                                 $note = wfMsg( 'token_suffix_mismatch' );
2437                         } else {
2438                                 $note = wfMsg( 'session_fail_preview' );
2439                         }
2440                 } elseif ( $this->incompleteForm ) {
2441                         $note = wfMsg( 'edit_form_incomplete' );
2442                 } else {
2443                         $note = wfMsg( 'previewnote' );
2444                 }
2445
2446                 $parserOptions = ParserOptions::newFromUser( $wgUser );
2447                 $parserOptions->setEditSection( false );
2448                 $parserOptions->setTidy( true );
2449                 $parserOptions->setIsPreview( true );
2450                 $parserOptions->setIsSectionPreview( !is_null($this->section) && $this->section !== '' );
2451
2452                 # don't parse non-wikitext pages, show message about preview
2453                 # XXX: stupid php bug won't let us use $this->getContextTitle()->isCssJsSubpage() here -- This note has been there since r3530. Sure the bug was fixed time ago?
2454
2455                 if ( $this->isCssJsSubpage || !$this->mTitle->isWikitextPage() ) {
2456                         if( $this->mTitle->isCssJsSubpage() ) {
2457                                 $level = 'user';
2458                         } elseif( $this->mTitle->isCssOrJsPage() ) {
2459                                 $level = 'site';
2460                         } else {
2461                                 $level = false;
2462                         }
2463
2464                         # Used messages to make sure grep find them:
2465                         # Messages: usercsspreview, userjspreview, sitecsspreview, sitejspreview
2466                         if( $level ) {
2467                                 if (preg_match( "/\\.css$/", $this->mTitle->getText() ) ) {
2468                                         $previewtext = "<div id='mw-{$level}csspreview'>\n" . wfMsg( "{$level}csspreview" ) . "\n</div>";
2469                                         $class = "mw-code mw-css";
2470                                 } elseif (preg_match( "/\\.js$/", $this->mTitle->getText() ) ) {
2471                                         $previewtext = "<div id='mw-{$level}jspreview'>\n" . wfMsg( "{$level}jspreview" ) . "\n</div>";
2472                                         $class = "mw-code mw-js";
2473                                 } else {
2474                                         throw new MWException( 'A CSS/JS (sub)page but which is not css nor js!' );
2475                                 }
2476                         }
2477
2478                         $parserOutput = $wgParser->parse( $previewtext, $this->mTitle, $parserOptions );
2479                         $previewHTML = $parserOutput->mText;
2480                         $previewHTML .= "<pre class=\"$class\" dir=\"ltr\">\n" . htmlspecialchars( $this->textbox1 ) . "\n</pre>\n";
2481                 } else {
2482                         $rt = Title::newFromRedirectArray( $this->textbox1 );
2483                         if ( $rt ) {
2484                                 $previewHTML = $this->mArticle->viewRedirect( $rt, false );
2485                         } else {
2486                                 $toparse = $this->textbox1;
2487
2488                                 # If we're adding a comment, we need to show the
2489                                 # summary as the headline
2490                                 if ( $this->section == "new" && $this->summary != "" ) {
2491                                         $toparse = wfMsgForContent( 'newsectionheaderdefaultlevel', $this->summary ) . "\n\n" . $toparse;
2492                                 }
2493
2494                                 wfRunHooks( 'EditPageGetPreviewText', array( $this, &$toparse ) );
2495
2496                                 $parserOptions->enableLimitReport();
2497
2498                                 $toparse = $wgParser->preSaveTransform( $toparse, $this->mTitle, $wgUser, $parserOptions );
2499                                 $parserOutput = $wgParser->parse( $toparse, $this->mTitle, $parserOptions );
2500
2501                                 $previewHTML = $parserOutput->getText();
2502                                 $this->mParserOutput = $parserOutput;
2503                                 $wgOut->addParserOutputNoText( $parserOutput );
2504
2505                                 if ( count( $parserOutput->getWarnings() ) ) {
2506                                         $note .= "\n\n" . implode( "\n\n", $parserOutput->getWarnings() );
2507                                 }
2508                         }
2509                 }
2510
2511                 if( $this->isConflict ) {
2512                         $conflict = '<h2 id="mw-previewconflict">' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
2513                 } else {
2514                         $conflict = '<hr />';
2515                 }
2516
2517                 $previewhead = "<div class='previewnote'>\n" .
2518                         '<h2 id="mw-previewheader">' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>" .
2519                         $wgOut->parse( $note, true, /* interface */true ) . $conflict . "</div>\n";
2520
2521                 $pageLang = $this->mTitle->getPageLanguage();
2522                 $attribs = array( 'lang' => $pageLang->getCode(), 'dir' => $pageLang->getDir(),
2523                         'class' => 'mw-content-'.$pageLang->getDir() );
2524                 $previewHTML = Html::rawElement( 'div', $attribs, $previewHTML );
2525
2526                 wfProfileOut( __METHOD__ );
2527                 return $previewhead . $previewHTML . $this->previewTextAfterContent;
2528         }
2529
2530         /**
2531          * @return Array
2532          */
2533         function getTemplates() {
2534                 if ( $this->preview || $this->section != '' ) {
2535                         $templates = array();
2536                         if ( !isset( $this->mParserOutput ) ) {
2537                                 return $templates;
2538                         }
2539                         foreach( $this->mParserOutput->getTemplates() as $ns => $template) {
2540                                 foreach( array_keys( $template ) as $dbk ) {
2541                                         $templates[] = Title::makeTitle($ns, $dbk);
2542                                 }
2543                         }
2544                         return $templates;
2545                 } else {
2546                         return $this->mTitle->getTemplateLinksFrom();
2547                 }
2548         }
2549
2550         /**
2551          * Shows a bulletin board style toolbar for common editing functions.
2552          * It can be disabled in the user preferences.
2553          * The necessary JavaScript code can be found in skins/common/edit.js.
2554          *
2555          * @return string
2556          */
2557         static function getEditToolbar() {
2558                 global $wgStylePath, $wgContLang, $wgLang, $wgOut;
2559                 global $wgUseTeX, $wgEnableUploads, $wgForeignFileRepos;
2560
2561                 $imagesAvailable = $wgEnableUploads || count( $wgForeignFileRepos );
2562
2563                 /**
2564                  * $toolarray is an array of arrays each of which includes the
2565                  * filename of the button image (without path), the opening
2566                  * tag, the closing tag, optionally a sample text that is
2567                  * inserted between the two when no selection is highlighted
2568                  * and.  The tip text is shown when the user moves the mouse
2569                  * over the button.
2570                  *
2571                  * Also here: accesskeys (key), which are not used yet until
2572                  * someone can figure out a way to make them work in
2573                  * IE. However, we should make sure these keys are not defined
2574                  * on the edit page.
2575                  */
2576                 $toolarray = array(
2577                         array(
2578                                 'image'  => $wgLang->getImageFile( 'button-bold' ),
2579                                 'id'     => 'mw-editbutton-bold',
2580                                 'open'   => '\'\'\'',
2581                                 'close'  => '\'\'\'',
2582                                 'sample' => wfMsg( 'bold_sample' ),
2583                                 'tip'    => wfMsg( 'bold_tip' ),
2584                                 'key'    => 'B'
2585                         ),
2586                         array(
2587                                 'image'  => $wgLang->getImageFile( 'button-italic' ),
2588                                 'id'     => 'mw-editbutton-italic',
2589                                 'open'   => '\'\'',
2590                                 'close'  => '\'\'',
2591                                 'sample' => wfMsg( 'italic_sample' ),
2592                                 'tip'    => wfMsg( 'italic_tip' ),
2593                                 'key'    => 'I'
2594                         ),
2595                         array(
2596                                 'image'  => $wgLang->getImageFile( 'button-link' ),
2597                                 'id'     => 'mw-editbutton-link',
2598                                 'open'   => '[[',
2599                                 'close'  => ']]',
2600                                 'sample' => wfMsg( 'link_sample' ),
2601                                 'tip'    => wfMsg( 'link_tip' ),
2602                                 'key'    => 'L'
2603                         ),
2604                         array(
2605                                 'image'  => $wgLang->getImageFile( 'button-extlink' ),
2606                                 'id'     => 'mw-editbutton-extlink',
2607                                 'open'   => '[',
2608                                 'close'  => ']',
2609                                 'sample' => wfMsg( 'extlink_sample' ),
2610                                 'tip'    => wfMsg( 'extlink_tip' ),
2611                                 'key'    => 'X'
2612                         ),
2613                         array(
2614                                 'image'  => $wgLang->getImageFile( 'button-headline' ),
2615                                 'id'     => 'mw-editbutton-headline',
2616                                 'open'   => "\n== ",
2617                                 'close'  => " ==\n",
2618                                 'sample' => wfMsg( 'headline_sample' ),
2619                                 'tip'    => wfMsg( 'headline_tip' ),
2620                                 'key'    => 'H'
2621                         ),
2622                         $imagesAvailable ? array(
2623                                 'image'  => $wgLang->getImageFile( 'button-image' ),
2624                                 'id'     => 'mw-editbutton-image',
2625                                 'open'   => '[[' . $wgContLang->getNsText( NS_FILE ) . ':',
2626                                 'close'  => ']]',
2627                                 'sample' => wfMsg( 'image_sample' ),
2628                                 'tip'    => wfMsg( 'image_tip' ),
2629                                 'key'    => 'D',
2630                         ) : false,
2631                         $imagesAvailable ? array(
2632                                 'image'  => $wgLang->getImageFile( 'button-media' ),
2633                                 'id'     => 'mw-editbutton-media',
2634                                 'open'   => '[[' . $wgContLang->getNsText( NS_MEDIA ) . ':',
2635                                 'close'  => ']]',
2636                                 'sample' => wfMsg( 'media_sample' ),
2637                                 'tip'    => wfMsg( 'media_tip' ),
2638                                 'key'    => 'M'
2639                         ) : false,
2640                         $wgUseTeX ?     array(
2641                                 'image'  => $wgLang->getImageFile( 'button-math' ),
2642                                 'id'     => 'mw-editbutton-math',
2643                                 'open'   => "<math>",
2644                                 'close'  => "</math>",
2645                                 'sample' => wfMsg( 'math_sample' ),
2646                                 'tip'    => wfMsg( 'math_tip' ),
2647                                 'key'    => 'C'
2648                         ) : false,
2649                         array(
2650                                 'image'  => $wgLang->getImageFile( 'button-nowiki' ),
2651                                 'id'     => 'mw-editbutton-nowiki',
2652                                 'open'   => "<nowiki>",
2653                                 'close'  => "</nowiki>",
2654                                 'sample' => wfMsg( 'nowiki_sample' ),
2655                                 'tip'    => wfMsg( 'nowiki_tip' ),
2656                                 'key'    => 'N'
2657                         ),
2658                         array(
2659                                 'image'  => $wgLang->getImageFile( 'button-sig' ),
2660                                 'id'     => 'mw-editbutton-signature',
2661                                 'open'   => '--~~~~',
2662                                 'close'  => '',
2663                                 'sample' => '',
2664                                 'tip'    => wfMsg( 'sig_tip' ),
2665                                 'key'    => 'Y'
2666                         ),
2667                         array(
2668                                 'image'  => $wgLang->getImageFile( 'button-hr' ),
2669                                 'id'     => 'mw-editbutton-hr',
2670                                 'open'   => "\n----\n",
2671                                 'close'  => '',
2672                                 'sample' => '',
2673                                 'tip'    => wfMsg( 'hr_tip' ),
2674                                 'key'    => 'R'
2675                         )
2676                 );
2677
2678                 $script = 'mw.loader.using("mediawiki.action.edit", function() {';
2679                 foreach ( $toolarray as $tool ) {
2680                         if ( !$tool ) {
2681                                 continue;
2682                         }
2683
2684                         $params = array(
2685                                 $image = $wgStylePath . '/common/images/' . $tool['image'],
2686                                 // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
2687                                 // Older browsers show a "speedtip" type message only for ALT.
2688                                 // Ideally these should be different, realistically they
2689                                 // probably don't need to be.
2690                                 $tip = $tool['tip'],
2691                                 $open = $tool['open'],
2692                                 $close = $tool['close'],
2693                                 $sample = $tool['sample'],
2694                                 $cssId = $tool['id'],
2695                         );
2696
2697                         $script .= Xml::encodeJsCall( 'mw.toolbar.addButton', $params );
2698                 }
2699
2700                 // This used to be called on DOMReady from mediawiki.action.edit, which
2701                 // ended up causing race conditions with the setup code above.
2702                 $script .= "\n" .
2703                         "// Create button bar\n" .
2704                         "$(function() { mw.toolbar.init(); } );\n";
2705
2706                 $script .= '});';
2707                 $wgOut->addScript( Html::inlineScript( ResourceLoader::makeLoaderConditionalScript( $script ) ) );
2708
2709                 $toolbar = '<div id="toolbar"></div>';
2710
2711                 wfRunHooks( 'EditPageBeforeEditToolbar', array( &$toolbar ) );
2712
2713                 return $toolbar;
2714         }
2715
2716         /**
2717          * Returns an array of html code of the following checkboxes:
2718          * minor and watch
2719          *
2720          * @param $tabindex Current tabindex
2721          * @param $checked Array of checkbox => bool, where bool indicates the checked
2722          *                 status of the checkbox
2723          *
2724          * @return array
2725          */
2726         public function getCheckboxes( &$tabindex, $checked ) {
2727                 global $wgUser;
2728
2729                 $checkboxes = array();
2730
2731                 // don't show the minor edit checkbox if it's a new page or section
2732                 if ( !$this->isNew ) {
2733                         $checkboxes['minor'] = '';
2734                         $minorLabel = wfMsgExt( 'minoredit', array( 'parseinline' ) );
2735                         if ( $wgUser->isAllowed( 'minoredit' ) ) {
2736                                 $attribs = array(
2737                                         'tabindex'  => ++$tabindex,
2738                                         'accesskey' => wfMsg( 'accesskey-minoredit' ),
2739                                         'id'        => 'wpMinoredit',
2740                                 );
2741                                 $checkboxes['minor'] =
2742                                         Xml::check( 'wpMinoredit', $checked['minor'], $attribs ) .
2743                                         "&#160;<label for='wpMinoredit' id='mw-editpage-minoredit'" .
2744                                         Xml::expandAttributes( array( 'title' => Linker::titleAttrib( 'minoredit', 'withaccess' ) ) ) .
2745                                         ">{$minorLabel}</label>";
2746                         }
2747                 }
2748
2749                 $watchLabel = wfMsgExt( 'watchthis', array( 'parseinline' ) );
2750                 $checkboxes['watch'] = '';
2751                 if ( $wgUser->isLoggedIn() ) {
2752                         $attribs = array(
2753                                 'tabindex'  => ++$tabindex,
2754                                 'accesskey' => wfMsg( 'accesskey-watch' ),
2755                                 'id'        => 'wpWatchthis',
2756                         );
2757                         $checkboxes['watch'] =
2758                                 Xml::check( 'wpWatchthis', $checked['watch'], $attribs ) .
2759                                 "&#160;<label for='wpWatchthis' id='mw-editpage-watch'" .
2760                                 Xml::expandAttributes( array( 'title' => Linker::titleAttrib( 'watch', 'withaccess' ) ) ) .
2761                                 ">{$watchLabel}</label>";
2762                 }
2763                 wfRunHooks( 'EditPageBeforeEditChecks', array( &$this, &$checkboxes, &$tabindex ) );
2764                 return $checkboxes;
2765         }
2766
2767         /**
2768          * Returns an array of html code of the following buttons:
2769          * save, diff, preview and live
2770          *
2771          * @param $tabindex Current tabindex
2772          *
2773          * @return array
2774          */
2775         public function getEditButtons( &$tabindex ) {
2776                 $buttons = array();
2777
2778                 $temp = array(
2779                         'id'        => 'wpSave',
2780                         'name'      => 'wpSave',
2781                         'type'      => 'submit',
2782                         'tabindex'  => ++$tabindex,
2783                         'value'     => wfMsg( 'savearticle' ),
2784                         'accesskey' => wfMsg( 'accesskey-save' ),
2785                         'title'     => wfMsg( 'tooltip-save' ).' ['.wfMsg( 'accesskey-save' ).']',
2786                 );
2787                 $buttons['save'] = Xml::element('input', $temp, '');
2788
2789                 ++$tabindex; // use the same for preview and live preview
2790                 $temp = array(
2791                         'id'        => 'wpPreview',
2792                         'name'      => 'wpPreview',
2793                         'type'      => 'submit',
2794                         'tabindex'  => $tabindex,
2795                         'value'     => wfMsg( 'showpreview' ),
2796                         'accesskey' => wfMsg( 'accesskey-preview' ),
2797                         'title'     => wfMsg( 'tooltip-preview' ) . ' [' . wfMsg( 'accesskey-preview' ) . ']',
2798                 );
2799                 $buttons['preview'] = Xml::element( 'input', $temp, '' );
2800                 $buttons['live'] = '';
2801
2802                 $temp = array(
2803                         'id'        => 'wpDiff',
2804                         'name'      => 'wpDiff',
2805                         'type'      => 'submit',
2806                         'tabindex'  => ++$tabindex,
2807                         'value'     => wfMsg( 'showdiff' ),
2808                         'accesskey' => wfMsg( 'accesskey-diff' ),
2809                         'title'     => wfMsg( 'tooltip-diff' ) . ' [' . wfMsg( 'accesskey-diff' ) . ']',
2810                 );
2811                 $buttons['diff'] = Xml::element( 'input', $temp, '' );
2812
2813                 wfRunHooks( 'EditPageBeforeEditButtons', array( &$this, &$buttons, &$tabindex ) );
2814                 return $buttons;
2815         }
2816
2817         /**
2818          * Output preview text only. This can be sucked into the edit page
2819          * via JavaScript, and saves the server time rendering the skin as
2820          * well as theoretically being more robust on the client (doesn't
2821          * disturb the edit box's undo history, won't eat your text on
2822          * failure, etc).
2823          *
2824          * @todo This doesn't include category or interlanguage links.
2825          *       Would need to enhance it a bit, <s>maybe wrap them in XML
2826          *       or something...</s> that might also require more skin
2827          *       initialization, so check whether that's a problem.
2828          */
2829         function livePreview() {
2830                 global $wgOut;
2831                 $wgOut->disable();
2832                 header( 'Content-type: text/xml; charset=utf-8' );
2833                 header( 'Cache-control: no-cache' );
2834
2835                 $previewText = $this->getPreviewText();
2836                 #$categories = $skin->getCategoryLinks();
2837
2838                 $s =
2839                 '<?xml version="1.0" encoding="UTF-8" ?>' . "\n" .
2840                 Xml::tags( 'livepreview', null,
2841                         Xml::element( 'preview', null, $previewText )
2842                         #.      Xml::element( 'category', null, $categories )
2843                 );
2844                 echo $s;
2845         }
2846
2847         /**
2848          * Call the stock "user is blocked" page
2849          *
2850          * @deprecated in 1.19; throw an exception directly instead
2851          */
2852         function blockedPage() {
2853                 wfDeprecated( __METHOD__, '1.19' );
2854                 global $wgUser;
2855
2856                 throw new UserBlockedError( $wgUser->mBlock );
2857         }
2858
2859         /**
2860          * Produce the stock "please login to edit pages" page
2861          *
2862          * @deprecated in 1.19; throw an exception directly instead
2863          */
2864         function userNotLoggedInPage() {
2865                 wfDeprecated( __METHOD__, '1.19' );
2866                 throw new PermissionsError( 'edit' );
2867         }
2868
2869         /**
2870          * Show an error page saying to the user that he has insufficient permissions
2871          * to create a new page
2872          *
2873          * @deprecated in 1.19; throw an exception directly instead
2874          */
2875         function noCreatePermission() {
2876                 wfDeprecated( __METHOD__, '1.19' );
2877                 $permission = $this->mTitle->isTalkPage() ? 'createtalk' : 'createpage';
2878                 throw new PermissionsError( $permission );
2879         }
2880
2881         /**
2882          * Creates a basic error page which informs the user that
2883          * they have attempted to edit a nonexistent section.
2884          */
2885         function noSuchSectionPage() {
2886                 global $wgOut;
2887
2888                 $wgOut->prepareErrorPage( wfMessage( 'nosuchsectiontitle' ) );
2889
2890                 $res = wfMsgExt( 'nosuchsectiontext', 'parse', $this->section );
2891                 wfRunHooks( 'EditPageNoSuchSection', array( &$this, &$res ) );
2892                 $wgOut->addHTML( $res );
2893
2894                 $wgOut->returnToMain( false, $this->mTitle );
2895         }
2896
2897         /**
2898          * Produce the stock "your edit contains spam" page
2899          *
2900          * @param $match Text which triggered one or more filters
2901          * @deprecated since 1.17 Use method spamPageWithContent() instead
2902          */
2903         static function spamPage( $match = false ) {
2904                 wfDeprecated( __METHOD__, '1.17' );
2905
2906                 global $wgOut, $wgTitle;
2907
2908                 $wgOut->prepareErrorPage( wfMessage( 'spamprotectiontitle' ) );
2909
2910                 $wgOut->addHTML( '<div id="spamprotected">' );
2911                 $wgOut->addWikiMsg( 'spamprotectiontext' );
2912                 if ( $match ) {
2913                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
2914                 }
2915                 $wgOut->addHTML( '</div>' );
2916
2917                 $wgOut->returnToMain( false, $wgTitle );
2918         }
2919
2920         /**
2921          * Show "your edit contains spam" page with your diff and text
2922          *
2923          * @param $match Text which triggered one or more filters
2924          */
2925         public function spamPageWithContent( $match = false ) {
2926                 global $wgOut;
2927                 $this->textbox2 = $this->textbox1;
2928
2929                 $wgOut->prepareErrorPage( wfMessage( 'spamprotectiontitle' ) );
2930
2931                 $wgOut->addHTML( '<div id="spamprotected">' );
2932                 $wgOut->addWikiMsg( 'spamprotectiontext' );
2933                 if ( $match ) {
2934                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
2935                 }
2936                 $wgOut->addHTML( '</div>' );
2937
2938                 $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
2939                 $de = new DifferenceEngine( $this->mArticle->getContext() );
2940                 $de->setText( $this->getCurrentText(), $this->textbox2 );
2941                 $de->showDiff( wfMsg( "storedversion" ), wfMsgExt( 'yourtext', 'parseinline' ) );
2942
2943                 $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
2944                 $this->showTextbox2();
2945
2946                 $wgOut->addReturnTo( $this->getContextTitle(), array( 'action' => 'edit' ) );
2947         }
2948
2949         /**
2950          * Format an anchor fragment as it would appear for a given section name
2951          * @param $text String
2952          * @return String
2953          * @private
2954          */
2955         function sectionAnchor( $text ) {
2956                 global $wgParser;
2957                 return $wgParser->guessSectionNameFromWikiText( $text );
2958         }
2959
2960         /**
2961          * Check if the browser is on a blacklist of user-agents known to
2962          * mangle UTF-8 data on form submission. Returns true if Unicode
2963          * should make it through, false if it's known to be a problem.
2964          * @return bool
2965          * @private
2966          */
2967         function checkUnicodeCompliantBrowser() {
2968                 global $wgBrowserBlackList;
2969                 if ( empty( $_SERVER["HTTP_USER_AGENT"] ) ) {
2970                         // No User-Agent header sent? Trust it by default...
2971                         return true;
2972                 }
2973                 $currentbrowser = $_SERVER["HTTP_USER_AGENT"];
2974                 foreach ( $wgBrowserBlackList as $browser ) {
2975                         if ( preg_match($browser, $currentbrowser) ) {
2976                                 return false;
2977                         }
2978                 }
2979                 return true;
2980         }
2981
2982         /**
2983          * Filter an input field through a Unicode de-armoring process if it
2984          * came from an old browser with known broken Unicode editing issues.
2985          *
2986          * @param $request WebRequest
2987          * @param $field String
2988          * @return String
2989          * @private
2990          */
2991         function safeUnicodeInput( $request, $field ) {
2992                 $text = rtrim( $request->getText( $field ) );
2993                 return $request->getBool( 'safemode' )
2994                         ? $this->unmakesafe( $text )
2995                         : $text;
2996         }
2997
2998         /**
2999          * @param $request WebRequest
3000          * @param $text string
3001          * @return string
3002          */
3003         function safeUnicodeText( $request, $text ) {
3004                 $text = rtrim( $text );
3005                 return $request->getBool( 'safemode' )
3006                         ? $this->unmakesafe( $text )
3007                         : $text;
3008         }
3009
3010         /**
3011          * Filter an output field through a Unicode armoring process if it is
3012          * going to an old browser with known broken Unicode editing issues.
3013          *
3014          * @param $text String
3015          * @return String
3016          * @private
3017          */
3018         function safeUnicodeOutput( $text ) {
3019                 global $wgContLang;
3020                 $codedText = $wgContLang->recodeForEdit( $text );
3021                 return $this->checkUnicodeCompliantBrowser()
3022                         ? $codedText
3023                         : $this->makesafe( $codedText );
3024         }
3025
3026         /**
3027          * A number of web browsers are known to corrupt non-ASCII characters
3028          * in a UTF-8 text editing environment. To protect against this,
3029          * detected browsers will be served an armored version of the text,
3030          * with non-ASCII chars converted to numeric HTML character references.
3031          *
3032          * Preexisting such character references will have a 0 added to them
3033          * to ensure that round-trips do not alter the original data.
3034          *
3035          * @param $invalue String
3036          * @return String
3037          * @private
3038          */
3039         function makesafe( $invalue ) {
3040                 // Armor existing references for reversability.
3041                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
3042
3043                 $bytesleft = 0;
3044                 $result = "";
3045                 $working = 0;
3046                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
3047                         $bytevalue = ord( $invalue[$i] );
3048                         if ( $bytevalue <= 0x7F ) { //0xxx xxxx
3049                                 $result .= chr( $bytevalue );
3050                                 $bytesleft = 0;
3051                         } elseif ( $bytevalue <= 0xBF ) { //10xx xxxx
3052                                 $working = $working << 6;
3053                                 $working += ($bytevalue & 0x3F);
3054                                 $bytesleft--;
3055                                 if ( $bytesleft <= 0 ) {
3056                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
3057                                 }
3058                         } elseif ( $bytevalue <= 0xDF ) { //110x xxxx
3059                                 $working = $bytevalue & 0x1F;
3060                                 $bytesleft = 1;
3061                         } elseif ( $bytevalue <= 0xEF ) { //1110 xxxx
3062                                 $working = $bytevalue & 0x0F;
3063                                 $bytesleft = 2;
3064                         } else { //1111 0xxx
3065                                 $working = $bytevalue & 0x07;
3066                                 $bytesleft = 3;
3067                         }
3068                 }
3069                 return $result;
3070         }
3071
3072         /**
3073          * Reverse the previously applied transliteration of non-ASCII characters
3074          * back to UTF-8. Used to protect data from corruption by broken web browsers
3075          * as listed in $wgBrowserBlackList.
3076          *
3077          * @param $invalue String
3078          * @return String
3079          * @private
3080          */
3081         function unmakesafe( $invalue ) {
3082                 $result = "";
3083                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
3084                         if ( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue[$i+3] != '0' ) ) {
3085                                 $i += 3;
3086                                 $hexstring = "";
3087                                 do {
3088                                         $hexstring .= $invalue[$i];
3089                                         $i++;
3090                                 } while( ctype_xdigit( $invalue[$i] ) && ( $i < strlen( $invalue ) ) );
3091
3092                                 // Do some sanity checks. These aren't needed for reversability,
3093                                 // but should help keep the breakage down if the editor
3094                                 // breaks one of the entities whilst editing.
3095                                 if ( (substr($invalue,$i,1)==";") and (strlen($hexstring) <= 6) ) {
3096                                         $codepoint = hexdec($hexstring);
3097                                         $result .= codepointToUtf8( $codepoint );
3098                                 } else {
3099                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
3100                                 }
3101                         } else {
3102                                 $result .= substr( $invalue, $i, 1 );
3103                         }
3104                 }
3105                 // reverse the transform that we made for reversability reasons.
3106                 return strtr( $result, array( "&#x0" => "&#x" ) );
3107         }
3108 }