includes/ProtectionForm.php

   1 <?php
   2 /**
   3  * Page protection
   4  *
   5  * Copyright © 2005 Brion Vibber <brion@pobox.com>
   6  * https://www.mediawiki.org/
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; if not, write to the Free Software Foundation, Inc.,
  20  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  21  * http://www.gnu.org/copyleft/gpl.html
  22  *
  23  * @file
  24  */
  25
  26 /**
  27  * Handles the page protection UI and backend
  28  */
  29 class ProtectionForm {
  30         /** @var array A map of action to restriction level, from request or default */
  31         protected $mRestrictions = array();
  32
  33         /** @var string The custom/additional protection reason */
  34         protected $mReason = '';
  35
  36         /** @var string The reason selected from the list, blank for other/additional */
  37         protected $mReasonSelection = '';
  38
  39         /** @var bool True if the restrictions are cascading, from request or existing protection */
  40         protected $mCascade = false;
  41
  42         /** @var array Map of action to "other" expiry time. Used in preference to mExpirySelection. */
  43         protected $mExpiry = array();
  44
  45         /**
  46          * @var array Map of action to value selected in expiry drop-down list.
  47          * Will be set to 'othertime' whenever mExpiry is set.
  48          */
  49         protected $mExpirySelection = array();
  50
  51         /** @var array Permissions errors for the protect action */
  52         protected $mPermErrors = array();
  53
  54         /** @var array Types (i.e. actions) for which levels can be selected */
  55         protected $mApplicableTypes = array();
  56
  57         /** @var array Map of action to the expiry time of the existing protection */
  58         protected $mExistingExpiry = array();
  59
  60         function __construct( Page $article ) {
  61                 global $wgUser;
  62                 // Set instance variables.
  63                 $this->mArticle = $article;
  64                 $this->mTitle = $article->getTitle();
  65                 $this->mApplicableTypes = $this->mTitle->getRestrictionTypes();
  66
  67                 // Check if the form should be disabled.
  68                 // If it is, the form will be available in read-only to show levels.
  69                 $this->mPermErrors = $this->mTitle->getUserPermissionsErrors( 'protect', $wgUser );
  70                 if ( wfReadOnly() ) {
  71                         $this->mPermErrors[] = array( 'readonlytext', wfReadOnlyReason() );
  72                 }
  73                 $this->disabled = $this->mPermErrors != array();
  74                 $this->disabledAttrib = $this->disabled
  75                         ? array( 'disabled' => 'disabled' )
  76                         : array();
  77
  78                 $this->loadData();
  79         }
  80
  81         /**
  82          * Loads the current state of protection into the object.
  83          */
  84         function loadData() {
  85                 global $wgRequest, $wgUser;
  86
  87                 $levels = MWNamespace::getRestrictionLevels( $this->mTitle->getNamespace(), $wgUser );
  88                 $this->mCascade = $this->mTitle->areRestrictionsCascading();
  89
  90                 $this->mReason = $wgRequest->getText( 'mwProtect-reason' );
  91                 $this->mReasonSelection = $wgRequest->getText( 'wpProtectReasonSelection' );
  92                 $this->mCascade = $wgRequest->getBool( 'mwProtect-cascade', $this->mCascade );
  93
  94                 foreach ( $this->mApplicableTypes as $action ) {
  95                         // @todo FIXME: This form currently requires individual selections,
  96                         // but the db allows multiples separated by commas.
  97
  98                         // Pull the actual restriction from the DB
  99                         $this->mRestrictions[$action] = implode( '', $this->mTitle->getRestrictions( $action ) );
 100
 101                         if ( !$this->mRestrictions[$action] ) {
 102                                 // No existing expiry
 103                                 $existingExpiry = '';
 104                         } else {
 105                                 $existingExpiry = $this->mTitle->getRestrictionExpiry( $action );
 106                         }
 107                         $this->mExistingExpiry[$action] = $existingExpiry;
 108
 109                         $requestExpiry = $wgRequest->getText( "mwProtect-expiry-$action" );
 110                         $requestExpirySelection = $wgRequest->getVal( "wpProtectExpirySelection-$action" );
 111
 112                         if ( $requestExpiry ) {
 113                                 // Custom expiry takes precedence
 114                                 $this->mExpiry[$action] = $requestExpiry;
 115                                 $this->mExpirySelection[$action] = 'othertime';
 116                         } elseif ( $requestExpirySelection ) {
 117                                 // Expiry selected from list
 118                                 $this->mExpiry[$action] = '';
 119                                 $this->mExpirySelection[$action] = $requestExpirySelection;
 120                         } elseif ( $existingExpiry ) {
 121                                 // Use existing expiry in its own list item
 122                                 $this->mExpiry[$action] = '';
 123                                 $this->mExpirySelection[$action] = $existingExpiry;
 124                         } else {
 125                                 // Catches 'infinity' - Existing expiry is infinite, use "infinite" in drop-down
 126                                 // Final default: infinite
 127                                 $this->mExpiry[$action] = '';
 128                                 $this->mExpirySelection[$action] = 'infinite';
 129                         }
 130
 131                         $val = $wgRequest->getVal( "mwProtect-level-$action" );
 132                         if ( isset( $val ) && in_array( $val, $levels ) ) {
 133                                 $this->mRestrictions[$action] = $val;
 134                         }
 135                 }
 136         }
 137
 138         /**
 139          * Get the expiry time for a given action, by combining the relevant inputs.
 140          *
 141          * @param string $action
 142          *
 143          * @return string 14-char timestamp or "infinity", or false if the input was invalid
 144          */
 145         function getExpiry( $action ) {
 146                 if ( $this->mExpirySelection[$action] == 'existing' ) {
 147                         return $this->mExistingExpiry[$action];
 148                 } elseif ( $this->mExpirySelection[$action] == 'othertime' ) {
 149                         $value = $this->mExpiry[$action];
 150                 } else {
 151                         $value = $this->mExpirySelection[$action];
 152                 }
 153                 if ( $value == 'infinite' || $value == 'indefinite' || $value == 'infinity' ) {
 154                         $time = wfGetDB( DB_SLAVE )->getInfinity();
 155                 } else {
 156                         $unix = strtotime( $value );
 157
 158                         if ( !$unix || $unix === -1 ) {
 159                                 return false;
 160                         }
 161
 162                         // @todo FIXME: Non-qualified absolute times are not in users specified timezone
 163                         // and there isn't notice about it in the ui
 164                         $time = wfTimestamp( TS_MW, $unix );
 165                 }
 166                 return $time;
 167         }
 168
 169         /**
 170          * Main entry point for action=protect and action=unprotect
 171          */
 172         function execute() {
 173                 global $wgRequest, $wgOut;
 174
 175                 if ( MWNamespace::getRestrictionLevels( $this->mTitle->getNamespace() ) === array( '' ) ) {
 176                         throw new ErrorPageError( 'protect-badnamespace-title', 'protect-badnamespace-text' );
 177                 }
 178
 179                 if ( $wgRequest->wasPosted() ) {
 180                         if ( $this->save() ) {
 181                                 $q = $this->mArticle->isRedirect() ? 'redirect=no' : '';
 182                                 $wgOut->redirect( $this->mTitle->getFullURL( $q ) );
 183                         }
 184                 } else {
 185                         $this->show();
 186                 }
 187         }
 188
 189         /**
 190          * Show the input form with optional error message
 191          *
 192          * @param string $err Error message or null if there's no error
 193          */
 194         function show( $err = null ) {
 195                 global $wgOut;
 196
 197                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 198                 $wgOut->addBacklinkSubtitle( $this->mTitle );
 199
 200                 if ( is_array( $err ) ) {
 201                         $wgOut->wrapWikiMsg( "<p class='error'>\n$1\n</p>\n", $err );
 202                 } elseif ( is_string( $err ) ) {
 203                         $wgOut->addHTML( "<p class='error'>{$err}</p>\n" );
 204                 }
 205
 206                 if ( $this->mTitle->getRestrictionTypes() === array() ) {
 207                         // No restriction types available for the current title
 208                         // this might happen if an extension alters the available types
 209                         $wgOut->setPageTitle( wfMessage(
 210                                 'protect-norestrictiontypes-title',
 211                                 $this->mTitle->getPrefixedText()
 212                         ) );
 213                         $wgOut->addWikiText( wfMessage( 'protect-norestrictiontypes-text' )->text() );
 214
 215                         // Show the log in case protection was possible once
 216                         $this->showLogExtract( $wgOut );
 217                         // return as there isn't anything else we can do
 218                         return;
 219                 }
 220
 221                 list( $cascadeSources, /* $restrictions */ ) = $this->mTitle->getCascadeProtectionSources();
 222                 if ( $cascadeSources && count( $cascadeSources ) > 0 ) {
 223                         $titles = '';
 224
 225                         foreach ( $cascadeSources as $title ) {
 226                                 $titles .= '* [[:' . $title->getPrefixedText() . "]]\n";
 227                         }
 228
 229                         /** @todo FIXME: i18n issue, should use formatted number. */
 230                         $wgOut->wrapWikiMsg(
 231                                 "<div id=\"mw-protect-cascadeon\">\n$1\n" . $titles . "</div>",
 232                                 array( 'protect-cascadeon', count( $cascadeSources ) )
 233                         );
 234                 }
 235
 236                 # Show an appropriate message if the user isn't allowed or able to change
 237                 # the protection settings at this time
 238                 if ( $this->disabled ) {
 239                         $wgOut->setPageTitle(
 240                                 wfMessage( 'protect-title-notallowed',
 241                                         $this->mTitle->getPrefixedText() )
 242                         );
 243                         $wgOut->addWikiText( $wgOut->formatPermissionsErrorMessage( $this->mPermErrors, 'protect' ) );
 244                 } else {
 245                         $wgOut->setPageTitle( wfMessage( 'protect-title', $this->mTitle->getPrefixedText() ) );
 246                         $wgOut->addWikiMsg( 'protect-text',
 247                                 wfEscapeWikiText( $this->mTitle->getPrefixedText() ) );
 248                 }
 249
 250                 $wgOut->addHTML( $this->buildForm() );
 251                 $this->showLogExtract( $wgOut );
 252         }
 253
 254         /**
 255          * Save submitted protection form
 256          *
 257          * @return bool Success
 258          */
 259         function save() {
 260                 global $wgRequest, $wgUser, $wgOut;
 261
 262                 # Permission check!
 263                 if ( $this->disabled ) {
 264                         $this->show();
 265                         return false;
 266                 }
 267
 268                 $token = $wgRequest->getVal( 'wpEditToken' );
 269                 if ( !$wgUser->matchEditToken( $token, array( 'protect', $this->mTitle->getPrefixedDBkey() ) ) ) {
 270                         $this->show( array( 'sessionfailure' ) );
 271                         return false;
 272                 }
 273
 274                 # Create reason string. Use list and/or custom string.
 275                 $reasonstr = $this->mReasonSelection;
 276                 if ( $reasonstr != 'other' && $this->mReason != '' ) {
 277                         // Entry from drop down menu + additional comment
 278                         $reasonstr .= wfMessage( 'colon-separator' )->text() . $this->mReason;
 279                 } elseif ( $reasonstr == 'other' ) {
 280                         $reasonstr = $this->mReason;
 281                 }
 282                 $expiry = array();
 283                 foreach ( $this->mApplicableTypes as $action ) {
 284                         $expiry[$action] = $this->getExpiry( $action );
 285                         if ( empty( $this->mRestrictions[$action] ) ) {
 286                                 continue; // unprotected
 287                         }
 288                         if ( !$expiry[$action] ) {
 289                                 $this->show( array( 'protect_expiry_invalid' ) );
 290                                 return false;
 291                         }
 292                         if ( $expiry[$action] < wfTimestampNow() ) {
 293                                 $this->show( array( 'protect_expiry_old' ) );
 294                                 return false;
 295                         }
 296                 }
 297
 298                 $this->mCascade = $wgRequest->getBool( 'mwProtect-cascade' );
 299
 300                 $status = $this->mArticle->doUpdateRestrictions(
 301                         $this->mRestrictions,
 302                         $expiry,
 303                         $this->mCascade,
 304                         $reasonstr,
 305                         $wgUser
 306                 );
 307
 308                 if ( !$status->isOK() ) {
 309                         $this->show( $wgOut->parseInline( $status->getWikiText() ) );
 310                         return false;
 311                 }
 312
 313                 /**
 314                  * Give extensions a change to handle added form items
 315                  *
 316                  * @since 1.19 you can (and you should) return false to abort saving;
 317                  *             you can also return an array of message name and its parameters
 318                  */
 319                 $errorMsg = '';
 320                 if ( !wfRunHooks( 'ProtectionForm::save', array( $this->mArticle, &$errorMsg, $reasonstr ) ) ) {
 321                         if ( $errorMsg == '' ) {
 322                                 $errorMsg = array( 'hookaborted' );
 323                         }
 324                 }
 325                 if ( $errorMsg != '' ) {
 326                         $this->show( $errorMsg );
 327                         return false;
 328                 }
 329
 330                 WatchAction::doWatchOrUnwatch( $wgRequest->getCheck( 'mwProtectWatch' ), $this->mTitle, $wgUser );
 331
 332                 return true;
 333         }
 334
 335         /**
 336          * Build the input form
 337          *
 338          * @return string HTML form
 339          */
 340         function buildForm() {
 341                 global $wgUser, $wgLang, $wgOut;
 342
 343                 $mProtectreasonother = Xml::label(
 344                         wfMessage( 'protectcomment' )->text(),
 345                         'wpProtectReasonSelection'
 346                 );
 347                 $mProtectreason = Xml::label(
 348                         wfMessage( 'protect-otherreason' )->text(),
 349                         'mwProtect-reason'
 350                 );
 351
 352                 $out = '';
 353                 if ( !$this->disabled ) {
 354                         $wgOut->addModules( 'mediawiki.legacy.protect' );
 355                         $out .= Xml::openElement( 'form', array( 'method' => 'post',
 356                                 'action' => $this->mTitle->getLocalURL( 'action=protect' ),
 357                                 'id' => 'mw-Protect-Form', 'onsubmit' => 'ProtectionForm.enableUnchainedInputs(true)' ) );
 358                 }
 359
 360                 $out .= Xml::openElement( 'fieldset' ) .
 361                         Xml::element( 'legend', null, wfMessage( 'protect-legend' )->text() ) .
 362                         Xml::openElement( 'table', array( 'id' => 'mwProtectSet' ) ) .
 363                         Xml::openElement( 'tbody' );
 364
 365                 // Not all languages have V_x <-> N_x relation
 366                 foreach ( $this->mRestrictions as $action => $selected ) {
 367                         // Messages:
 368                         // restriction-edit, restriction-move, restriction-create, restriction-upload
 369                         $msg = wfMessage( 'restriction-' . $action );
 370                         $out .= "<tr><td>" .
 371                         Xml::openElement( 'fieldset' ) .
 372                         Xml::element( 'legend', null, $msg->exists() ? $msg->text() : $action ) .
 373                         Xml::openElement( 'table', array( 'id' => "mw-protect-table-$action" ) ) .
 374                                 "<tr><td>" . $this->buildSelector( $action, $selected ) . "</td></tr><tr><td>";
 375
 376                         $reasonDropDown = Xml::listDropDown( 'wpProtectReasonSelection',
 377                                 wfMessage( 'protect-dropdown' )->inContentLanguage()->text(),
 378                                 wfMessage( 'protect-otherreason-op' )->inContentLanguage()->text(),
 379                                 $this->mReasonSelection,
 380                                 'mwProtect-reason', 4 );
 381                         $scExpiryOptions = wfMessage( 'protect-expiry-options' )->inContentLanguage()->text();
 382
 383                         $showProtectOptions = $scExpiryOptions !== '-' && !$this->disabled;
 384
 385                         $mProtectexpiry = Xml::label(
 386                                 wfMessage( 'protectexpiry' )->text(),
 387                                 "mwProtectExpirySelection-$action"
 388                         );
 389                         $mProtectother = Xml::label(
 390                                 wfMessage( 'protect-othertime' )->text(),
 391                                 "mwProtect-$action-expires"
 392                         );
 393
 394                         $expiryFormOptions = '';
 395                         if ( $this->mExistingExpiry[$action] && $this->mExistingExpiry[$action] != 'infinity' ) {
 396                                 $timestamp = $wgLang->timeanddate( $this->mExistingExpiry[$action], true );
 397                                 $d = $wgLang->date( $this->mExistingExpiry[$action], true );
 398                                 $t = $wgLang->time( $this->mExistingExpiry[$action], true );
 399                                 $expiryFormOptions .=
 400                                         Xml::option(
 401                                                 wfMessage( 'protect-existing-expiry', $timestamp, $d, $t )->text(),
 402                                                 'existing',
 403                                                 $this->mExpirySelection[$action] == 'existing'
 404                                         ) . "\n";
 405                         }
 406
 407                         $expiryFormOptions .= Xml::option(
 408                                 wfMessage( 'protect-othertime-op' )->text(),
 409                                 "othertime"
 410                         ) . "\n";
 411                         foreach ( explode( ',', $scExpiryOptions ) as $option ) {
 412                                 if ( strpos( $option, ":" ) === false ) {
 413                                         $show = $value = $option;
 414                                 } else {
 415                                         list( $show, $value ) = explode( ":", $option );
 416                                 }
 417                                 $show = htmlspecialchars( $show );
 418                                 $value = htmlspecialchars( $value );
 419                                 $expiryFormOptions .= Xml::option(
 420                                         $show,
 421                                         $value,
 422                                         $this->mExpirySelection[$action] === $value
 423                                 ) . "\n";
 424                         }
 425                         # Add expiry dropdown
 426                         if ( $showProtectOptions && !$this->disabled ) {
 427                                 $out .= "
 428                                         <table><tr>
 429                                                 <td class='mw-label'>
 430                                                         {$mProtectexpiry}
 431                                                 </td>
 432                                                 <td class='mw-input'>" .
 433                                                         Xml::tags( 'select',
 434                                                                 array(
 435                                                                         'id' => "mwProtectExpirySelection-$action",
 436                                                                         'name' => "wpProtectExpirySelection-$action",
 437                                                                         'onchange' => "ProtectionForm.updateExpiryList(this)",
 438                                                                         'tabindex' => '2' ) + $this->disabledAttrib,
 439                                                                 $expiryFormOptions ) .
 440                                                 "</td>
 441                                         </tr></table>";
 442                         }
 443                         # Add custom expiry field
 444                         $attribs = array( 'id' => "mwProtect-$action-expires",
 445                                 'onkeyup' => 'ProtectionForm.updateExpiry(this)',
 446                                 'onchange' => 'ProtectionForm.updateExpiry(this)' ) + $this->disabledAttrib;
 447                         $out .= "<table><tr>
 448                                         <td class='mw-label'>" .
 449                                                 $mProtectother .
 450                                         '</td>
 451                                         <td class="mw-input">' .
 452                                                 Xml::input( "mwProtect-expiry-$action", 50, $this->mExpiry[$action], $attribs ) .
 453                                         '</td>
 454                                 </tr></table>';
 455                         $out .= "</td></tr>" .
 456                         Xml::closeElement( 'table' ) .
 457                         Xml::closeElement( 'fieldset' ) .
 458                         "</td></tr>";
 459                 }
 460                 # Give extensions a chance to add items to the form
 461                 wfRunHooks( 'ProtectionForm::buildForm', array( $this->mArticle, &$out ) );
 462
 463                 $out .= Xml::closeElement( 'tbody' ) . Xml::closeElement( 'table' );
 464
 465                 // JavaScript will add another row with a value-chaining checkbox
 466                 if ( $this->mTitle->exists() ) {
 467                         $out .= Xml::openElement( 'table', array( 'id' => 'mw-protect-table2' ) ) .
 468                                 Xml::openElement( 'tbody' );
 469                         $out .= '<tr>
 470                                         <td></td>
 471                                         <td class="mw-input">' .
 472                                                 Xml::checkLabel(
 473                                                         wfMessage( 'protect-cascade' )->text(),
 474                                                         'mwProtect-cascade',
 475                                                         'mwProtect-cascade',
 476                                                         $this->mCascade, $this->disabledAttrib
 477                                                 ) .
 478                                         "</td>
 479                                 </tr>\n";
 480                         $out .= Xml::closeElement( 'tbody' ) . Xml::closeElement( 'table' );
 481                 }
 482
 483                 # Add manual and custom reason field/selects as well as submit
 484                 if ( !$this->disabled ) {
 485                         $out .= Xml::openElement( 'table', array( 'id' => 'mw-protect-table3' ) ) .
 486                                 Xml::openElement( 'tbody' );
 487                         $out .= "
 488                                 <tr>
 489                                         <td class='mw-label'>
 490                                                 {$mProtectreasonother}
 491                                         </td>
 492                                         <td class='mw-input'>
 493                                                 {$reasonDropDown}
 494                                         </td>
 495                                 </tr>
 496                                 <tr>
 497                                         <td class='mw-label'>
 498                                                 {$mProtectreason}
 499                                         </td>
 500                                         <td class='mw-input'>" .
 501                                                 Xml::input( 'mwProtect-reason', 60, $this->mReason, array( 'type' => 'text',
 502                                                         'id' => 'mwProtect-reason', 'maxlength' => 180 ) ) .
 503                                                         // Limited maxlength as the database trims at 255 bytes and other texts
 504                                                         // chosen by dropdown menus on this page are also included in this database field.
 505                                                         // The byte limit of 180 bytes is enforced in javascript
 506                                         "</td>
 507                                 </tr>";
 508                         # Disallow watching is user is not logged in
 509                         if ( $wgUser->isLoggedIn() ) {
 510                                 $out .= "
 511                                 <tr>
 512                                         <td></td>
 513                                         <td class='mw-input'>" .
 514                                                 Xml::checkLabel( wfMessage( 'watchthis' )->text(),
 515                                                         'mwProtectWatch', 'mwProtectWatch',
 516                                                         $wgUser->isWatched( $this->mTitle ) || $wgUser->getOption( 'watchdefault' ) ) .
 517                                         "</td>
 518                                 </tr>";
 519                         }
 520                         $out .= "
 521                                 <tr>
 522                                         <td></td>
 523                                         <td class='mw-submit'>" .
 524                                                 Xml::submitButton(
 525                                                         wfMessage( 'confirm' )->text(),
 526                                                         array( 'id' => 'mw-Protect-submit' )
 527                                                 ) .
 528                                         "</td>
 529                                 </tr>\n";
 530                         $out .= Xml::closeElement( 'tbody' ) . Xml::closeElement( 'table' );
 531                 }
 532                 $out .= Xml::closeElement( 'fieldset' );
 533
 534                 if ( $wgUser->isAllowed( 'editinterface' ) ) {
 535                         $title = Title::makeTitle( NS_MEDIAWIKI, 'Protect-dropdown' );
 536                         $link = Linker::link(
 537                                 $title,
 538                                 wfMessage( 'protect-edit-reasonlist' )->escaped(),
 539                                 array(),
 540                                 array( 'action' => 'edit' )
 541                         );
 542                         $out .= '<p class="mw-protect-editreasons">' . $link . '</p>';
 543                 }
 544
 545                 if ( !$this->disabled ) {
 546                         $out .= Html::hidden(
 547                                 'wpEditToken',
 548                                 $wgUser->getEditToken( array( 'protect', $this->mTitle->getPrefixedDBkey() ) )
 549                         );
 550                         $out .= Xml::closeElement( 'form' );
 551                         $wgOut->addScript( $this->buildCleanupScript() );
 552                 }
 553
 554                 return $out;
 555         }
 556
 557         /**
 558          * Build protection level selector
 559          *
 560          * @param string $action Action to protect
 561          * @param string $selected Current protection level
 562          * @return string HTML fragment
 563          */
 564         function buildSelector( $action, $selected ) {
 565                 global $wgUser;
 566
 567                 // If the form is disabled, display all relevant levels. Otherwise,
 568                 // just show the ones this user can use.
 569                 $levels = MWNamespace::getRestrictionLevels( $this->mTitle->getNamespace(),
 570                         $this->disabled ? null : $wgUser
 571                 );
 572
 573                 $id = 'mwProtect-level-' . $action;
 574                 $attribs = array(
 575                         'id' => $id,
 576                         'name' => $id,
 577                         'size' => count( $levels ),
 578                         'onchange' => 'ProtectionForm.updateLevels(this)',
 579                         ) + $this->disabledAttrib;
 580
 581                 $out = Xml::openElement( 'select', $attribs );
 582                 foreach ( $levels as $key ) {
 583                         $out .= Xml::option( $this->getOptionLabel( $key ), $key, $key == $selected );
 584                 }
 585                 $out .= Xml::closeElement( 'select' );
 586                 return $out;
 587         }
 588
 589         /**
 590          * Prepare the label for a protection selector option
 591          *
 592          * @param string $permission Permission required
 593          * @return string
 594          */
 595         private function getOptionLabel( $permission ) {
 596                 if ( $permission == '' ) {
 597                         return wfMessage( 'protect-default' )->text();
 598                 } else {
 599                         // Messages: protect-level-autoconfirmed, protect-level-sysop
 600                         $msg = wfMessage( "protect-level-{$permission}" );
 601                         if ( $msg->exists() ) {
 602                                 return $msg->text();
 603                         }
 604                         return wfMessage( 'protect-fallback', $permission )->text();
 605                 }
 606         }
 607
 608         function buildCleanupScript() {
 609                 global $wgCascadingRestrictionLevels, $wgOut;
 610
 611                 $cascadeableLevels = $wgCascadingRestrictionLevels;
 612                 $options = array(
 613                         'tableId' => 'mwProtectSet',
 614                         'labelText' => wfMessage( 'protect-unchain-permissions' )->plain(),
 615                         'numTypes' => count( $this->mApplicableTypes ),
 616                         'existingMatch' => count( array_unique( $this->mExistingExpiry ) ) === 1,
 617                 );
 618
 619                 $wgOut->addJsConfigVars( 'wgCascadeableLevels', $cascadeableLevels );
 620                 $script = Xml::encodeJsCall( 'ProtectionForm.init', array( $options ) );
 621                 return Html::inlineScript( ResourceLoader::makeLoaderConditionalScript( $script ) );
 622         }
 623
 624         /**
 625          * Show protection long extracts for this page
 626          *
 627          * @param OutputPage $out
 628          * @access private
 629          */
 630         function showLogExtract( &$out ) {
 631                 # Show relevant lines from the protection log:
 632                 $protectLogPage = new LogPage( 'protect' );
 633                 $out->addHTML( Xml::element( 'h2', null, $protectLogPage->getName()->text() ) );
 634                 LogEventsList::showLogExtract( $out, 'protect', $this->mTitle );
 635                 # Let extensions add other relevant log extracts
 636                 wfRunHooks( 'ProtectionForm::showLogExtract', array( $this->mArticle, $out ) );
 637         }
 638 }