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         // Loads the current state of protection into the object.
  75         function loadData() {
  76                 global $wgRequest, $wgUser;
  77                 global $wgRestrictionLevels;
  78
  79                 $this->mCascade = $this->mTitle->areRestrictionsCascading();
  80
  81                 $this->mReason = $wgRequest->getText( 'mwProtect-reason' );
  82                 $this->mReasonSelection = $wgRequest->getText( 'wpProtectReasonSelection' );
  83                 $this->mCascade = $wgRequest->getBool( 'mwProtect-cascade', $this->mCascade );
  84
  85                 foreach( $this->mApplicableTypes as $action ) {
  86                         // Fixme: this form currently requires individual selections,
  87                         // but the db allows multiples separated by commas.
  88
  89                         // Pull the actual restriction from the DB
  90                         $this->mRestrictions[$action] = implode( '', $this->mTitle->getRestrictions( $action ) );
  91
  92                         if ( !$this->mRestrictions[$action] ) {
  93                                 // No existing expiry
  94                                 $existingExpiry = '';
  95                         } else {
  96                                 $existingExpiry = $this->mTitle->getRestrictionExpiry( $action );
  97                         }
  98                         $this->mExistingExpiry[$action] = $existingExpiry;
  99
 100                         $requestExpiry = $wgRequest->getText( "mwProtect-expiry-$action" );
 101                         $requestExpirySelection = $wgRequest->getVal( "wpProtectExpirySelection-$action" );
 102
 103                         if ( $requestExpiry ) {
 104                                 // Custom expiry takes precedence
 105                                 $this->mExpiry[$action] = $requestExpiry;
 106                                 $this->mExpirySelection[$action] = 'othertime';
 107                         } elseif ( $requestExpirySelection ) {
 108                                 // Expiry selected from list
 109                                 $this->mExpiry[$action] = '';
 110                                 $this->mExpirySelection[$action] = $requestExpirySelection;
 111                         } elseif ( $existingExpiry == 'infinity' ) {
 112                                 // Existing expiry is infinite, use "infinite" in drop-down
 113                                 $this->mExpiry[$action] = '';
 114                                 $this->mExpirySelection[$action] = 'infinite';
 115                         } elseif ( $existingExpiry ) {
 116                                 // Use existing expiry in its own list item
 117                                 $this->mExpiry[$action] = '';
 118                                 $this->mExpirySelection[$action] = $existingExpiry;
 119                         } else {
 120                                 // Final default: infinite
 121                                 $this->mExpiry[$action] = '';
 122                                 $this->mExpirySelection[$action] = 'infinite';
 123                         }
 124
 125                         $val = $wgRequest->getVal( "mwProtect-level-$action" );
 126                         if( isset( $val ) && in_array( $val, $wgRestrictionLevels ) ) {
 127                                 // Prevent users from setting levels that they cannot later unset
 128                                 if( $val == 'sysop' ) {
 129                                         // Special case, rewrite sysop to either protect and editprotected
 130                                         if( !$wgUser->isAllowed('protect') && !$wgUser->isAllowed('editprotected') )
 131                                                 continue;
 132                                 } else {
 133                                         if( !$wgUser->isAllowed($val) )
 134                                                 continue;
 135                                 }
 136                                 $this->mRestrictions[$action] = $val;
 137                         }
 138                 }
 139         }
 140
 141         /**
 142          * Get the expiry time for a given action, by combining the relevant inputs.
 143          * Returns a 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 = Block::infinity();
 155                 } else {
 156                         $unix = strtotime( $value );
 157
 158                         if ( !$unix || $unix === -1 ) {
 159                                 return false;
 160                         }
 161
 162                         // 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         function execute() {
 170                 global $wgRequest, $wgOut;
 171                 if( $wgRequest->wasPosted() ) {
 172                         if( $this->save() ) {
 173                                 $q = $this->mArticle->isRedirect() ? 'redirect=no' : '';
 174                                 $wgOut->redirect( $this->mTitle->getFullUrl( $q ) );
 175                         }
 176                 } else {
 177                         $this->show();
 178                 }
 179         }
 180
 181         function show( $err = null ) {
 182                 global $wgOut, $wgUser;
 183
 184                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 185
 186                 if( is_null( $this->mTitle ) ||
 187                         $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
 188                         $wgOut->showFatalError( wfMsg( 'badarticleerror' ) );
 189                         return;
 190                 }
 191
 192                 list( $cascadeSources, /* $restrictions */ ) = $this->mTitle->getCascadeProtectionSources();
 193
 194                 if ( $err != "" ) {
 195                         $wgOut->setSubtitle( wfMsgHtml( 'formerror' ) );
 196                         $wgOut->addHTML( "<p class='error'>{$err}</p>\n" );
 197                 }
 198
 199                 if ( $cascadeSources && count($cascadeSources) > 0 ) {
 200                         $titles = '';
 201
 202                         foreach ( $cascadeSources as $title ) {
 203                                 $titles .= '* [[:' . $title->getPrefixedText() . "]]\n";
 204                         }
 205
 206                         $wgOut->wrapWikiMsg( "<div id=\"mw-protect-cascadeon\">\n$1\n" . $titles . "</div>", array( 'protect-cascadeon', count($cascadeSources) ) );
 207                 }
 208
 209                 $sk = $wgUser->getSkin();
 210                 $titleLink = $sk->link( $this->mTitle );
 211                 $wgOut->setPageTitle( wfMsg( 'protect-title', $this->mTitle->getPrefixedText() ) );
 212                 $wgOut->setSubtitle( wfMsg( 'protect-backlink', $titleLink ) );
 213
 214                 # Show an appropriate message if the user isn't allowed or able to change
 215                 # the protection settings at this time
 216                 if( $this->disabled ) {
 217                         if( wfReadOnly() ) {
 218                                 $wgOut->readOnlyPage();
 219                         } elseif( $this->mPermErrors ) {
 220                                 $wgOut->addWikiText( $wgOut->formatPermissionsErrorMessage( $this->mPermErrors ) );
 221                         }
 222                 } else {
 223                         $wgOut->addWikiMsg( 'protect-text', $this->mTitle->getPrefixedText() );
 224                 }
 225
 226                 $wgOut->addHTML( $this->buildForm() );
 227
 228                 $this->showLogExtract( $wgOut );
 229         }
 230
 231         function save() {
 232                 global $wgRequest, $wgUser;
 233                 # Permission check!
 234                 if ( $this->disabled ) {
 235                         $this->show();
 236                         return false;
 237                 }
 238
 239                 $token = $wgRequest->getVal( 'wpEditToken' );
 240                 if ( !$wgUser->matchEditToken( $token ) ) {
 241                         $this->show( wfMsg( 'sessionfailure' ) );
 242                         return false;
 243                 }
 244
 245                 # Create reason string. Use list and/or custom string.
 246                 $reasonstr = $this->mReasonSelection;
 247                 if ( $reasonstr != 'other' && $this->mReason != '' ) {
 248                         // Entry from drop down menu + additional comment
 249                         $reasonstr .= wfMsgForContent( 'colon-separator' ) . $this->mReason;
 250                 } elseif ( $reasonstr == 'other' ) {
 251                         $reasonstr = $this->mReason;
 252                 }
 253                 $expiry = array();
 254                 foreach( $this->mApplicableTypes as $action ) {
 255                         $expiry[$action] = $this->getExpiry( $action );
 256                         if( empty($this->mRestrictions[$action]) )
 257                                 continue; // unprotected
 258                         if ( !$expiry[$action] ) {
 259                                 $this->show( wfMsg( 'protect_expiry_invalid' ) );
 260                                 return false;
 261                         }
 262                         if ( $expiry[$action] < wfTimestampNow() ) {
 263                                 $this->show( wfMsg( 'protect_expiry_old' ) );
 264                                 return false;
 265                         }
 266                 }
 267
 268                 # They shouldn't be able to do this anyway, but just to make sure, ensure that cascading restrictions aren't being applied
 269                 #  to a semi-protected page.
 270                 global $wgGroupPermissions;
 271
 272                 $edit_restriction = isset( $this->mRestrictions['edit'] ) ? $this->mRestrictions['edit'] : '';
 273                 $this->mCascade = $wgRequest->getBool( 'mwProtect-cascade' );
 274                 if ($this->mCascade && ($edit_restriction != 'protect') &&
 275                         !(isset($wgGroupPermissions[$edit_restriction]['protect']) && $wgGroupPermissions[$edit_restriction]['protect'] ) )
 276                         $this->mCascade = false;
 277
 278                 if ($this->mTitle->exists()) {
 279                         $ok = $this->mArticle->updateRestrictions( $this->mRestrictions, $reasonstr, $this->mCascade, $expiry );
 280                 } else {
 281                         $ok = $this->mTitle->updateTitleProtection( $this->mRestrictions['create'], $reasonstr, $expiry['create'] );
 282                 }
 283
 284                 if( !$ok ) {
 285                         throw new FatalError( "Unknown error at restriction save time." );
 286                 }
 287
 288                 $errorMsg = '';
 289                 # Give extensions a change to handle added form items
 290                 if( !wfRunHooks( 'ProtectionForm::save', array($this->mArticle,&$errorMsg) ) ) {
 291                         throw new FatalError( "Unknown hook error at restriction save time." );
 292                 }
 293                 if( $errorMsg != '' ) {
 294                         $this->show( $errorMsg );
 295                         return false;
 296                 }
 297
 298                 if( $wgRequest->getCheck( 'mwProtectWatch' ) && $wgUser->isLoggedIn() ) {
 299                         $this->mArticle->doWatch();
 300                 } elseif( $this->mTitle->userIsWatching() ) {
 301                         $this->mArticle->doUnwatch();
 302                 }
 303                 return $ok;
 304         }
 305
 306         /**
 307          * Build the input form
 308          *
 309          * @return $out string HTML form
 310          */
 311         function buildForm() {
 312                 global $wgUser, $wgLang;
 313
 314                 $mProtectreasonother = Xml::label( wfMsg( 'protectcomment' ), 'wpProtectReasonSelection' );
 315                 $mProtectreason = Xml::label( wfMsg( 'protect-otherreason' ), 'mwProtect-reason' );
 316
 317                 $out = '';
 318                 if( !$this->disabled ) {
 319                         $out .= $this->buildScript();
 320                         $out .= Xml::openElement( 'form', array( 'method' => 'post',
 321                                 'action' => $this->mTitle->getLocalUrl( 'action=protect' ),
 322                                 'id' => 'mw-Protect-Form', 'onsubmit' => 'ProtectionForm.enableUnchainedInputs(true)' ) );
 323                         $out .= Xml::hidden( 'wpEditToken',$wgUser->editToken() );
 324                 }
 325
 326                 $out .= Xml::openElement( 'fieldset' ) .
 327                         Xml::element( 'legend', null, wfMsg( 'protect-legend' ) ) .
 328                         Xml::openElement( 'table', array( 'id' => 'mwProtectSet' ) ) .
 329                         Xml::openElement( 'tbody' );
 330
 331                 foreach( $this->mRestrictions as $action => $selected ) {
 332                         /* Not all languages have V_x <-> N_x relation */
 333                         $msg = wfMsg( 'restriction-' . $action );
 334                         if( wfEmptyMsg( 'restriction-' . $action, $msg ) ) {
 335                                 $msg = $action;
 336                         }
 337                         $out .= "<tr><td>".
 338                         Xml::openElement( 'fieldset' ) .
 339                         Xml::element( 'legend', null, $msg ) .
 340                         Xml::openElement( 'table', array( 'id' => "mw-protect-table-$action" ) ) .
 341                                 "<tr><td>" . $this->buildSelector( $action, $selected ) . "</td></tr><tr><td>";
 342
 343                         $reasonDropDown = Xml::listDropDown( 'wpProtectReasonSelection',
 344                                 wfMsgForContent( 'protect-dropdown' ),
 345                                 wfMsgForContent( 'protect-otherreason-op' ),
 346                                 $this->mReasonSelection,
 347                                 'mwProtect-reason', 4 );
 348                         $scExpiryOptions = wfMsgForContent( 'protect-expiry-options' );
 349
 350                         $showProtectOptions = ($scExpiryOptions !== '-' && !$this->disabled);
 351
 352                         $mProtectexpiry = Xml::label( wfMsg( 'protectexpiry' ), "mwProtectExpirySelection-$action" );
 353                         $mProtectother = Xml::label( wfMsg( 'protect-othertime' ), "mwProtect-$action-expires" );
 354
 355                         $expiryFormOptions = '';
 356                         if ( $this->mExistingExpiry[$action] && $this->mExistingExpiry[$action] != 'infinity' ) {
 357                                 $timestamp = $wgLang->timeanddate( $this->mExistingExpiry[$action] );
 358                                 $d = $wgLang->date( $this->mExistingExpiry[$action] );
 359                                 $t = $wgLang->time( $this->mExistingExpiry[$action] );
 360                                 $expiryFormOptions .=
 361                                         Xml::option(
 362                                                 wfMsg( 'protect-existing-expiry', $timestamp, $d, $t ),
 363                                                 'existing',
 364                                                 $this->mExpirySelection[$action] == 'existing'
 365                                         ) . "\n";
 366                         }
 367
 368                         $expiryFormOptions .= Xml::option( wfMsg( 'protect-othertime-op' ), "othertime" ) . "\n";
 369                         foreach( explode(',', $scExpiryOptions) as $option ) {
 370                                 if ( strpos($option, ":") === false ) {
 371                                         $show = $value = $option;
 372                                 } else {
 373                                         list($show, $value) = explode(":", $option);
 374                                 }
 375                                 $show = htmlspecialchars($show);
 376                                 $value = htmlspecialchars($value);
 377                                 $expiryFormOptions .= Xml::option( $show, $value, $this->mExpirySelection[$action] === $value ) . "\n";
 378                         }
 379                         # Add expiry dropdown
 380                         if( $showProtectOptions && !$this->disabled ) {
 381                                 $out .= "
 382                                         <table><tr>
 383                                                 <td class='mw-label'>
 384                                                         {$mProtectexpiry}
 385                                                 </td>
 386                                                 <td class='mw-input'>" .
 387                                                         Xml::tags( 'select',
 388                                                                 array(
 389                                                                         'id' => "mwProtectExpirySelection-$action",
 390                                                                         'name' => "wpProtectExpirySelection-$action",
 391                                                                         'onchange' => "ProtectionForm.updateExpiryList(this)",
 392                                                                         'tabindex' => '2' ) + $this->disabledAttrib,
 393                                                                 $expiryFormOptions ) .
 394                                                 "</td>
 395                                         </tr></table>";
 396                         }
 397                         # Add custom expiry field
 398                         $attribs = array( 'id' => "mwProtect-$action-expires",
 399                                 'onkeyup' => 'ProtectionForm.updateExpiry(this)',
 400                                 'onchange' => 'ProtectionForm.updateExpiry(this)' ) + $this->disabledAttrib;
 401                         $out .= "<table><tr>
 402                                         <td class='mw-label'>" .
 403                                                 $mProtectother .
 404                                         '</td>
 405                                         <td class="mw-input">' .
 406                                                 Xml::input( "mwProtect-expiry-$action", 50, $this->mExpiry[$action], $attribs ) .
 407                                         '</td>
 408                                 </tr></table>';
 409                         $out .= "</td></tr>" .
 410                         Xml::closeElement( 'table' ) .
 411                         Xml::closeElement( 'fieldset' ) .
 412                         "</td></tr>";
 413                 }
 414                 # Give extensions a chance to add items to the form
 415                 wfRunHooks( 'ProtectionForm::buildForm', array($this->mArticle,&$out) );
 416
 417                 $out .= Xml::closeElement( 'tbody' ) . Xml::closeElement( 'table' );
 418
 419                 // JavaScript will add another row with a value-chaining checkbox
 420                 if( $this->mTitle->exists() ) {
 421                         $out .= Xml::openElement( 'table', array( 'id' => 'mw-protect-table2' ) ) .
 422                                 Xml::openElement( 'tbody' );
 423                         $out .= '<tr>
 424                                         <td></td>
 425                                         <td class="mw-input">' .
 426                                                 Xml::checkLabel( wfMsg( 'protect-cascade' ), 'mwProtect-cascade', 'mwProtect-cascade',
 427                                                         $this->mCascade, $this->disabledAttrib ) .
 428                                         "</td>
 429                                 </tr>\n";
 430                         $out .= Xml::closeElement( 'tbody' ) . Xml::closeElement( 'table' );
 431                 }
 432
 433                 # Add manual and custom reason field/selects as well as submit
 434                 if( !$this->disabled ) {
 435                         $out .=  Xml::openElement( 'table', array( 'id' => 'mw-protect-table3' ) ) .
 436                                 Xml::openElement( 'tbody' );
 437                         $out .= "
 438                                 <tr>
 439                                         <td class='mw-label'>
 440                                                 {$mProtectreasonother}
 441                                         </td>
 442                                         <td class='mw-input'>
 443                                                 {$reasonDropDown}
 444                                         </td>
 445                                 </tr>
 446                                 <tr>
 447                                         <td class='mw-label'>
 448                                                 {$mProtectreason}
 449                                         </td>
 450                                         <td class='mw-input'>" .
 451                                                 Xml::input( 'mwProtect-reason', 60, $this->mReason, array( 'type' => 'text',
 452                                                         'id' => 'mwProtect-reason', 'maxlength' => 255 ) ) .
 453                                         "</td>
 454                                 </tr>";
 455                         # Disallow watching is user is not logged in
 456                         if( $wgUser->isLoggedIn() ) {
 457                                 $out .= "
 458                                 <tr>
 459                                         <td></td>
 460                                         <td class='mw-input'>" .
 461                                                 Xml::checkLabel( wfMsg( 'watchthis' ),
 462                                                         'mwProtectWatch', 'mwProtectWatch',
 463                                                         $this->mTitle->userIsWatching() || $wgUser->getOption( 'watchdefault' ) ) .
 464                                         "</td>
 465                                 </tr>";
 466                         }
 467                         $out .= "
 468                                 <tr>
 469                                         <td></td>
 470                                         <td class='mw-submit'>" .
 471                                                 Xml::submitButton( wfMsg( 'confirm' ), array( 'id' => 'mw-Protect-submit' ) ) .
 472                                         "</td>
 473                                 </tr>\n";
 474                         $out .= Xml::closeElement( 'tbody' ) . Xml::closeElement( 'table' );
 475                 }
 476                 $out .= Xml::closeElement( 'fieldset' );
 477
 478                 if ( $wgUser->isAllowed( 'editinterface' ) ) {
 479                         $title = Title::makeTitle( NS_MEDIAWIKI, 'Protect-dropdown' );
 480                         $link = $wgUser->getSkin()->link(
 481                                 $title,
 482                                 wfMsgHtml( 'protect-edit-reasonlist' ),
 483                                 array(),
 484                                 array( 'action' => 'edit' )
 485                         );
 486                         $out .= '<p class="mw-protect-editreasons">' . $link . '</p>';
 487                 }
 488
 489                 if ( !$this->disabled ) {
 490                         $out .= Xml::closeElement( 'form' ) .
 491                                 $this->buildCleanupScript();
 492                 }
 493
 494                 return $out;
 495         }
 496
 497         function buildSelector( $action, $selected ) {
 498                 global $wgRestrictionLevels, $wgUser;
 499
 500                 $levels = array();
 501                 foreach( $wgRestrictionLevels as $key ) {
 502                         //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
 503                         if( $key == 'sysop' ) {
 504                                 //special case, rewrite sysop to protect and editprotected
 505                                 if( !$wgUser->isAllowed('protect') && !$wgUser->isAllowed('editprotected') && !$this->disabled )
 506                                         continue;
 507                         } else {
 508                                 if( !$wgUser->isAllowed($key) && !$this->disabled )
 509                                         continue;
 510                         }
 511                         $levels[] = $key;
 512                 }
 513
 514                 $id = 'mwProtect-level-' . $action;
 515                 $attribs = array(
 516                         'id' => $id,
 517                         'name' => $id,
 518                         'size' => count( $levels ),
 519                         'onchange' => 'ProtectionForm.updateLevels(this)',
 520                         ) + $this->disabledAttrib;
 521
 522                 $out = Xml::openElement( 'select', $attribs );
 523                 foreach( $levels as $key ) {
 524                         $out .= Xml::option( $this->getOptionLabel( $key ), $key, $key == $selected );
 525                 }
 526                 $out .= Xml::closeElement( 'select' );
 527                 return $out;
 528         }
 529
 530         /**
 531          * Prepare the label for a protection selector option
 532          *
 533          * @param string $permission Permission required
 534          * @return string
 535          */
 536         private function getOptionLabel( $permission ) {
 537                 if( $permission == '' ) {
 538                         return wfMsg( 'protect-default' );
 539                 } else {
 540                         $key = "protect-level-{$permission}";
 541                         $msg = wfMsg( $key );
 542                         if( wfEmptyMsg( $key, $msg ) )
 543                                 $msg = wfMsg( 'protect-fallback', $permission );
 544                         return $msg;
 545                 }
 546         }
 547
 548         function buildScript() {
 549                 global $wgStylePath, $wgStyleVersion;
 550                 return Xml::tags( 'script', array(
 551                         'type' => 'text/javascript',
 552                         'src' => $wgStylePath . "/common/protect.js?$wgStyleVersion.1" ), '' );
 553         }
 554
 555         function buildCleanupScript() {
 556                 global $wgRestrictionLevels, $wgGroupPermissions;
 557                 $script = 'var wgCascadeableLevels=';
 558                 $CascadeableLevels = array();
 559                 foreach( $wgRestrictionLevels as $key ) {
 560                         if ( (isset($wgGroupPermissions[$key]['protect']) && $wgGroupPermissions[$key]['protect']) || $key == 'protect' ) {
 561                                 $CascadeableLevels[] = "'" . Xml::escapeJsString( $key ) . "'";
 562                         }
 563                 }
 564                 $script .= "[" . implode(',',$CascadeableLevels) . "];\n";
 565                 $options = (object)array(
 566                         'tableId' => 'mwProtectSet',
 567                         'labelText' => wfMsg( 'protect-unchain-permissions' ),
 568                         'numTypes' => count($this->mApplicableTypes),
 569                         'existingMatch' => 1 == count( array_unique( $this->mExistingExpiry ) ),
 570                 );
 571                 $encOptions = Xml::encodeJsVar( $options );
 572
 573                 $script .= "ProtectionForm.init($encOptions)";
 574                 return Xml::tags( 'script', array( 'type' => 'text/javascript' ), $script );
 575         }
 576
 577         /**
 578          * @param OutputPage $out
 579          * @access private
 580          */
 581         function showLogExtract( &$out ) {
 582                 # Show relevant lines from the protection log:
 583                 $out->addHTML( Xml::element( 'h2', null, LogPage::logName( 'protect' ) ) );
 584                 LogEventsList::showLogExtract( $out, 'protect', $this->mTitle->getPrefixedText() );
 585                 # Let extensions add other relevant log extracts
 586                 wfRunHooks( 'ProtectionForm::showLogExtract', array($this->mArticle,$out) );
 587         }
 588 }