includes/EditPage.php

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