includes/ProtectionForm.php

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