includes/Preferences.php

   1 <?php
   2 /**
   3  * We're now using the HTMLForm object with some customisation to generate the
   4  * Preferences form. This object handles generic submission, CSRF protection,
   5  * layout and other logic in a reusable manner. We subclass it as a PreferencesForm
   6  * to make some minor customisations.
   7  *
   8  * In order to generate the form, the HTMLForm object needs an array structure
   9  * detailing the form fields available, and that's what this class is for. Each
  10  * element of the array is a basic property-list, including the type of field,
  11  * the label it is to be given in the form, callbacks for validation and
  12  * 'filtering', and other pertinent information. Note that the 'default' field
  13  * is named for generic forms, and does not represent the preference's default
  14  * (which is stored in $wgDefaultUserOptions), but the default for the form
  15  * field, which should be whatever the user has set for that preference. There
  16  * is no need to override it unless you have some special storage logic (for
  17  * instance, those not presently stored as options, but which are best set from
  18  * the user preferences view).
  19  *
  20  * Field types are implemented as subclasses of the generic HTMLFormField
  21  * object, and typically implement at least getInputHTML, which generates the
  22  * HTML for the input field to be placed in the table.
  23  *
  24  * Once fields have been retrieved and validated, submission logic is handed
  25  * over to the tryUISubmit static method of this class.
  26  */
  27
  28 class Preferences {
  29         static $defaultPreferences = null;
  30         static $saveFilters = array(
  31                         'timecorrection' => array( 'Preferences', 'filterTimezoneInput' ),
  32                         'cols' => array( 'Preferences', 'filterIntval' ),
  33                         'rows' => array( 'Preferences', 'filterIntval' ),
  34                         'rclimit' => array( 'Preferences', 'filterIntval' ),
  35                         'wllimit' => array( 'Preferences', 'filterIntval' ),
  36                         'searchlimit' => array( 'Preferences', 'filterIntval' ),
  37         );
  38
  39         static function getPreferences( $user ) {
  40                 if ( self::$defaultPreferences )
  41                         return self::$defaultPreferences;
  42
  43                 $defaultPreferences = array();
  44
  45                 self::profilePreferences( $user, $defaultPreferences );
  46                 self::skinPreferences( $user, $defaultPreferences );
  47                 self::filesPreferences( $user, $defaultPreferences );
  48                 self::mathPreferences( $user, $defaultPreferences );
  49                 self::datetimePreferences( $user, $defaultPreferences );
  50                 self::renderingPreferences( $user, $defaultPreferences );
  51                 self::editingPreferences( $user, $defaultPreferences );
  52                 self::rcPreferences( $user, $defaultPreferences );
  53                 self::watchlistPreferences( $user, $defaultPreferences );
  54                 self::searchPreferences( $user, $defaultPreferences );
  55                 self::miscPreferences( $user, $defaultPreferences );
  56
  57                 wfRunHooks( 'GetPreferences', array( $user, &$defaultPreferences ) );
  58
  59                 ## Remove preferences that wikis don't want to use
  60                 global $wgHiddenPrefs;
  61                 foreach ( $wgHiddenPrefs as $pref ) {
  62                         if ( isset( $defaultPreferences[$pref] ) ) {
  63                                 unset( $defaultPreferences[$pref] );
  64                         }
  65                 }
  66
  67                 ## Prod in defaults from the user
  68                 foreach ( $defaultPreferences as $name => &$info ) {
  69                         $prefFromUser = self::getOptionFromUser( $name, $info, $user );
  70                         $field = HTMLForm::loadInputFromParameters( $name, $info ); // For validation
  71                         $defaultOptions = User::getDefaultOptions();
  72                         $globalDefault = isset( $defaultOptions[$name] )
  73                                 ? $defaultOptions[$name]
  74                                 : null;
  75
  76                         // If it validates, set it as the default
  77                         if ( isset( $info['default'] ) ) {
  78                                 // Already set, no problem
  79                                 continue;
  80                         } elseif ( !is_null( $prefFromUser ) && // Make sure we're not just pulling nothing
  81                                         $field->validate( $prefFromUser, $user->mOptions ) === true ) {
  82                                 $info['default'] = $prefFromUser;
  83                         } elseif ( $field->validate( $globalDefault, $user->mOptions ) === true ) {
  84                                 $info['default'] = $globalDefault;
  85                         } else {
  86                                 throw new MWException( "Global default '$globalDefault' is invalid for field $name" );
  87                         }
  88                 }
  89
  90                 self::$defaultPreferences = $defaultPreferences;
  91
  92                 return $defaultPreferences;
  93         }
  94
  95         // Pull option from a user account. Handles stuff like array-type preferences.
  96         static function getOptionFromUser( $name, $info, $user ) {
  97                 $val = $user->getOption( $name );
  98
  99                 // Handling for array-type preferences
 100                 if ( ( isset( $info['type'] ) && $info['type'] == 'multiselect' ) ||
 101                                 ( isset( $info['class'] ) && $info['class'] == 'HTMLMultiSelectField' ) ) {
 102                         $options = HTMLFormField::flattenOptions( $info['options'] );
 103                         $prefix = isset( $info['prefix'] ) ? $info['prefix'] : $name;
 104                         $val = array();
 105
 106                         foreach ( $options as $value ) {
 107                                 if ( $user->getOption( "$prefix$value" ) ) {
 108                                         $val[] = $value;
 109                                 }
 110                         }
 111                 }
 112
 113                 return $val;
 114         }
 115
 116         static function profilePreferences( $user, &$defaultPreferences ) {
 117                 global $wgLang, $wgUser;
 118                 ## User info #####################################
 119                 // Information panel
 120                 $defaultPreferences['username'] = array(
 121                         'type' => 'info',
 122                         'label-message' => 'username',
 123                         'default' => $user->getName(),
 124                         'section' => 'personal/info',
 125                 );
 126
 127                 $defaultPreferences['userid'] = array(
 128                         'type' => 'info',
 129                         'label-message' => 'uid',
 130                         'default' => $user->getId(),
 131                         'section' => 'personal/info',
 132                 );
 133
 134                 # Get groups to which the user belongs
 135                 $userEffectiveGroups = $user->getEffectiveGroups();
 136                 $userGroups = $userMembers = array();
 137                 foreach ( $userEffectiveGroups as $ueg ) {
 138                         if ( $ueg == '*' ) {
 139                                 // Skip the default * group, seems useless here
 140                                 continue;
 141                         }
 142                         $groupName  = User::getGroupName( $ueg );
 143                         $userGroups[] = User::makeGroupLinkHTML( $ueg, $groupName );
 144
 145                         $memberName = User::getGroupMember( $ueg );
 146                         $userMembers[] = User::makeGroupLinkHTML( $ueg, $memberName );
 147                 }
 148                 asort( $userGroups );
 149                 asort( $userMembers );
 150
 151                 $defaultPreferences['usergroups'] = array(
 152                         'type' => 'info',
 153                         'label' => wfMsgExt(
 154                                 'prefs-memberingroups', 'parseinline',
 155                                 $wgLang->formatNum( count( $userGroups ) )
 156                         ),
 157                         'default' => wfMsgExt(
 158                                 'prefs-memberingroups-type', array(),
 159                                 $wgLang->commaList( $userGroups ),
 160                                 $wgLang->commaList( $userMembers )
 161                         ),
 162                         'raw' => true,
 163                         'section' => 'personal/info',
 164                 );
 165
 166                 $defaultPreferences['editcount'] = array(
 167                         'type' => 'info',
 168                         'label-message' => 'prefs-edits',
 169                         'default' => $wgLang->formatNum( $user->getEditCount() ),
 170                         'section' => 'personal/info',
 171                 );
 172
 173                 if ( $user->getRegistration() ) {
 174                         $defaultPreferences['registrationdate'] = array(
 175                                 'type' => 'info',
 176                                 'label-message' => 'prefs-registration',
 177                                 'default' => wfMsgExt(
 178                                         'prefs-registration-date-time', 'parsemag',
 179                                         $wgLang->timeanddate( $user->getRegistration(), true ),
 180                                         $wgLang->date( $user->getRegistration(), true ),
 181                                         $wgLang->time( $user->getRegistration(), true )
 182                                 ),
 183                                 'section' => 'personal/info',
 184                         );
 185                 }
 186
 187                 // Actually changeable stuff
 188                 global $wgAuth;
 189                 $defaultPreferences['realname'] = array(
 190                         'type' => $wgAuth->allowPropChange( 'realname' ) ? 'text' : 'info',
 191                         'default' => $user->getRealName(),
 192                         'section' => 'personal/info',
 193                         'label-message' => 'yourrealname',
 194                         'help-message' => 'prefs-help-realname',
 195                 );
 196
 197                 $defaultPreferences['gender'] = array(
 198                         'type' => 'select',
 199                         'section' => 'personal/info',
 200                         'options' => array(
 201                                 wfMsg( 'gender-male' ) => 'male',
 202                                 wfMsg( 'gender-female' ) => 'female',
 203                                 wfMsg( 'gender-unknown' ) => 'unknown',
 204                         ),
 205                         'label-message' => 'yourgender',
 206                         'help-message' => 'prefs-help-gender',
 207                 );
 208
 209                 if ( $wgAuth->allowPasswordChange() ) {
 210                         $link = $wgUser->getSkin()->link( SpecialPage::getTitleFor( 'Resetpass' ),
 211                                 wfMsgHtml( 'prefs-resetpass' ), array(),
 212                                 array( 'returnto' => SpecialPage::getTitleFor( 'Preferences' ) ) );
 213
 214                         $defaultPreferences['password'] = array(
 215                                 'type' => 'info',
 216                                 'raw' => true,
 217                                 'default' => $link,
 218                                 'label-message' => 'yourpassword',
 219                                 'section' => 'personal/info',
 220                         );
 221                 }
 222                 global $wgCookieExpiration;
 223                 if ( $wgCookieExpiration > 0 ) {
 224                         $defaultPreferences['rememberpassword'] = array(
 225                                 'type' => 'toggle',
 226                                 'label' => wfMsgExt(
 227                                         'tog-rememberpassword',
 228                                         array( 'parsemag' ),
 229                                         $wgLang->formatNum( ceil( $wgCookieExpiration / ( 3600 * 24 ) ) )
 230                                         ),
 231                                 'section' => 'personal/info',
 232                         );
 233                 }
 234
 235                 // Language
 236                 global $wgLanguageCode;
 237                 $languages = Language::getLanguageNames( false );
 238                 if ( !array_key_exists( $wgLanguageCode, $languages ) ) {
 239                         $languages[$wgLanguageCode] = $wgLanguageCode;
 240                 }
 241                 ksort( $languages );
 242
 243                 $options = array();
 244                 foreach ( $languages as $code => $name ) {
 245                         $display = wfBCP47( $code ) . ' - ' . $name;
 246                         $options[$display] = $code;
 247                 }
 248                 $defaultPreferences['language'] = array(
 249                         'type' => 'select',
 250                         'section' => 'personal/i18n',
 251                         'options' => $options,
 252                         'label-message' => 'yourlanguage',
 253                 );
 254
 255                 global $wgContLang, $wgDisableLangConversion;
 256                 global $wgDisableTitleConversion;
 257                 /* see if there are multiple language variants to choose from*/
 258                 $variantArray = array();
 259                 if ( !$wgDisableLangConversion ) {
 260                         $variants = $wgContLang->getVariants();
 261
 262                         $languages = Language::getLanguageNames( true );
 263                         foreach ( $variants as $v ) {
 264                                 $v = str_replace( '_', '-', strtolower( $v ) );
 265                                 if ( array_key_exists( $v, $languages ) ) {
 266                                         // If it doesn't have a name, we'll pretend it doesn't exist
 267                                         $variantArray[$v] = $languages[$v];
 268                                 }
 269                         }
 270
 271                         $options = array();
 272                         foreach ( $variantArray as $code => $name ) {
 273                                 $display = wfBCP47( $code ) . ' - ' . $name;
 274                                 $options[$display] = $code;
 275                         }
 276
 277                         if ( count( $variantArray ) > 1 ) {
 278                                 $defaultPreferences['variant'] = array(
 279                                         'label-message' => 'yourvariant',
 280                                         'type' => 'select',
 281                                         'options' => $options,
 282                                         'section' => 'personal/i18n',
 283                                 );
 284                         }
 285                 }
 286
 287                 if ( count( $variantArray ) > 1 && !$wgDisableLangConversion && !$wgDisableTitleConversion ) {
 288                         $defaultPreferences['noconvertlink'] =
 289                                         array(
 290                                 'type' => 'toggle',
 291                                 'section' => 'personal/i18n',
 292                                 'label-message' => 'tog-noconvertlink',
 293                         );
 294                 }
 295
 296                 global $wgMaxSigChars, $wgOut, $wgParser;
 297
 298                 // show a preview of the old signature first
 299                 $oldsigWikiText = $wgParser->preSaveTransform( "~~~", new Title , $user, new ParserOptions );
 300                 $oldsigHTML = $wgOut->parseInline( $oldsigWikiText );
 301                 $defaultPreferences['oldsig'] = array(
 302                         'type' => 'info',
 303                         'raw' => true,
 304                         'label-message' => 'tog-oldsig',
 305                         'default' => $oldsigHTML,
 306                         'section' => 'personal/signature',
 307                 );
 308                 $defaultPreferences['nickname'] = array(
 309                         'type' => $wgAuth->allowPropChange( 'nickname' ) ? 'text' : 'info',
 310                         'maxlength' => $wgMaxSigChars,
 311                         'label-message' => 'yournick',
 312                         'validation-callback' => array( 'Preferences', 'validateSignature' ),
 313                         'section' => 'personal/signature',
 314                         'filter-callback' => array( 'Preferences', 'cleanSignature' ),
 315                 );
 316                 $defaultPreferences['fancysig'] = array(
 317                         'type' => 'toggle',
 318                         'label-message' => 'tog-fancysig',
 319                         'help-message' => 'prefs-help-signature', // show general help about signature at the bottom of the section
 320                         'section' => 'personal/signature'
 321                 );
 322
 323                 ## Email stuff
 324
 325                 global $wgEnableEmail;
 326                 if ( $wgEnableEmail ) {
 327                         global $wgEmailConfirmToEdit;
 328
 329                         $defaultPreferences['emailaddress'] = array(
 330                                 'type' => $wgAuth->allowPropChange( 'emailaddress' ) ? 'email' : 'info',
 331                                 'default' => $user->getEmail(),
 332                                 'section' => 'personal/email',
 333                                 'label-message' => 'youremail',
 334                                 'help-message' => $wgEmailConfirmToEdit
 335                                         ? 'prefs-help-email-required'
 336                                         : 'prefs-help-email',
 337                                 'validation-callback' => array( 'Preferences', 'validateEmail' ),
 338                         );
 339
 340                         global $wgEnableUserEmail, $wgEmailAuthentication;
 341
 342                         $disableEmailPrefs = false;
 343
 344                         if ( $wgEmailAuthentication ) {
 345                                 if ( $user->getEmail() ) {
 346                                         if ( $user->getEmailAuthenticationTimestamp() ) {
 347                                                 // date and time are separate parameters to facilitate localisation.
 348                                                 // $time is kept for backward compat reasons.
 349                                                 // 'emailauthenticated' is also used in SpecialConfirmemail.php
 350                                                 $time = $wgLang->timeAndDate( $user->getEmailAuthenticationTimestamp(), true );
 351                                                 $d = $wgLang->date( $user->getEmailAuthenticationTimestamp(), true );
 352                                                 $t = $wgLang->time( $user->getEmailAuthenticationTimestamp(), true );
 353                                                 $emailauthenticated = wfMsgExt(
 354                                                         'emailauthenticated', 'parseinline',
 355                                                         array( $time, $d, $t )
 356                                                 ) . '<br />';
 357                                                 $disableEmailPrefs = false;
 358                                         } else {
 359                                                 $disableEmailPrefs = true;
 360                                                 $skin = $wgUser->getSkin();
 361                                                 $emailauthenticated = wfMsgExt( 'emailnotauthenticated', 'parseinline' ) . '<br />' .
 362                                                         $skin->link(
 363                                                                 SpecialPage::getTitleFor( 'Confirmemail' ),
 364                                                                 wfMsg( 'emailconfirmlink' ),
 365                                                                 array(),
 366                                                                 array(),
 367                                                                 array( 'known', 'noclasses' )
 368                                                         ) . '<br />';
 369                                         }
 370                                 } else {
 371                                         $disableEmailPrefs = true;
 372                                         $emailauthenticated = wfMsgHtml( 'noemailprefs' );
 373                                 }
 374
 375                                 $defaultPreferences['emailauthentication'] = array(
 376                                         'type' => 'info',
 377                                         'raw' => true,
 378                                         'section' => 'personal/email',
 379                                         'label-message' => 'prefs-emailconfirm-label',
 380                                         'default' => $emailauthenticated,
 381                                 );
 382
 383                         }
 384
 385                         if ( $wgEnableUserEmail && $user->isAllowed( 'sendemail' ) ) {
 386                                 $defaultPreferences['disablemail'] = array(
 387                                         'type' => 'toggle',
 388                                         'invert' => true,
 389                                         'section' => 'personal/email',
 390                                         'label-message' => 'allowemail',
 391                                         'disabled' => $disableEmailPrefs,
 392                                 );
 393                                 $defaultPreferences['ccmeonemails'] = array(
 394                                         'type' => 'toggle',
 395                                         'section' => 'personal/email',
 396                                         'label-message' => 'tog-ccmeonemails',
 397                                         'disabled' => $disableEmailPrefs,
 398                                 );
 399                         }
 400
 401                         global $wgEnotifWatchlist;
 402                         if ( $wgEnotifWatchlist ) {
 403                                 $defaultPreferences['enotifwatchlistpages'] = array(
 404                                         'type' => 'toggle',
 405                                         'section' => 'personal/email',
 406                                         'label-message' => 'tog-enotifwatchlistpages',
 407                                         'disabled' => $disableEmailPrefs,
 408                                 );
 409                         }
 410                         global $wgEnotifUserTalk;
 411                         if ( $wgEnotifUserTalk ) {
 412                                 $defaultPreferences['enotifusertalkpages'] = array(
 413                                         'type' => 'toggle',
 414                                         'section' => 'personal/email',
 415                                         'label-message' => 'tog-enotifusertalkpages',
 416                                         'disabled' => $disableEmailPrefs,
 417                                 );
 418                         }
 419                         if ( $wgEnotifUserTalk || $wgEnotifWatchlist ) {
 420                                 $defaultPreferences['enotifminoredits'] = array(
 421                                         'type' => 'toggle',
 422                                         'section' => 'personal/email',
 423                                         'label-message' => 'tog-enotifminoredits',
 424                                         'disabled' => $disableEmailPrefs,
 425                                 );
 426
 427                                 global $wgEnotifRevealEditorAddress;
 428                                 if ( $wgEnotifRevealEditorAddress ) {
 429                                         $defaultPreferences['enotifrevealaddr'] = array(
 430                                                 'type' => 'toggle',
 431                                                 'section' => 'personal/email',
 432                                                 'label-message' => 'tog-enotifrevealaddr',
 433                                                 'disabled' => $disableEmailPrefs,
 434                                         );
 435                                 }
 436                         }
 437                 }
 438         }
 439
 440         static function skinPreferences( $user, &$defaultPreferences ) {
 441                 ## Skin #####################################
 442                 global $wgLang, $wgAllowUserCss, $wgAllowUserJs;
 443
 444                 $defaultPreferences['skin'] = array(
 445                         'type' => 'radio',
 446                         'options' => self::generateSkinOptions( $user ),
 447                         'label' => '&#160;',
 448                         'section' => 'rendering/skin',
 449                 );
 450
 451                 # Create links to user CSS/JS pages for all skins
 452                 # This code is basically copied from generateSkinOptions().  It'd
 453                 # be nice to somehow merge this back in there to avoid redundancy.
 454                 if ( $wgAllowUserCss || $wgAllowUserJs ) {
 455                         $sk = $user->getSkin();
 456                         $linkTools = array();
 457
 458                         if ( $wgAllowUserCss ) {
 459                                 $cssPage = Title::makeTitleSafe( NS_USER, $user->getName() . '/common.css' );
 460                                 $linkTools[] = $sk->link( $cssPage, wfMsgHtml( 'prefs-custom-css' ) );
 461                         }
 462
 463                         if ( $wgAllowUserJs ) {
 464                                 $jsPage = Title::makeTitleSafe( NS_USER, $user->getName() . '/common.js' );
 465                                 $linkTools[] = $sk->link( $jsPage, wfMsgHtml( 'prefs-custom-js' ) );
 466                         }
 467
 468                         $defaultPreferences['commoncssjs'] = array(
 469                                 'type' => 'info',
 470                                 'raw' => true,
 471                                 'default' => $wgLang->pipeList( $linkTools ),
 472                                 'label-message' => 'prefs-common-css-js',
 473                                 'section' => 'rendering/skin',
 474                         );
 475                 }
 476
 477                 $selectedSkin = $user->getOption( 'skin' );
 478                 if ( in_array( $selectedSkin, array( 'cologneblue', 'standard' ) ) ) {
 479                         $settings = array_flip( $wgLang->getQuickbarSettings() );
 480
 481                         $defaultPreferences['quickbar'] = array(
 482                                 'type' => 'radio',
 483                                 'options' => $settings,
 484                                 'section' => 'rendering/skin',
 485                                 'label-message' => 'qbsettings',
 486                         );
 487                 }
 488         }
 489
 490         static function mathPreferences( $user, &$defaultPreferences ) {
 491                 ## Math #####################################
 492                 global $wgUseTeX, $wgLang;
 493                 if ( $wgUseTeX ) {
 494                         $defaultPreferences['math'] = array(
 495                                 'type' => 'radio',
 496                                 'options' => array_flip( array_map( 'wfMsgHtml', $wgLang->getMathNames() ) ),
 497                                 'label' => '&#160;',
 498                                 'section' => 'rendering/math',
 499                         );
 500                 }
 501         }
 502
 503         static function filesPreferences( $user, &$defaultPreferences ) {
 504                 ## Files #####################################
 505                 $defaultPreferences['imagesize'] = array(
 506                         'type' => 'select',
 507                         'options' => self::getImageSizes(),
 508                         'label-message' => 'imagemaxsize',
 509                         'section' => 'rendering/files',
 510                 );
 511                 $defaultPreferences['thumbsize'] = array(
 512                         'type' => 'select',
 513                         'options' => self::getThumbSizes(),
 514                         'label-message' => 'thumbsize',
 515                         'section' => 'rendering/files',
 516                 );
 517         }
 518
 519         static function datetimePreferences( $user, &$defaultPreferences ) {
 520                 global $wgLang;
 521
 522                 ## Date and time #####################################
 523                 $dateOptions = self::getDateOptions();
 524                 if ( $dateOptions ) {
 525                         $defaultPreferences['date'] = array(
 526                                 'type' => 'radio',
 527                                 'options' => $dateOptions,
 528                                 'label' => '&#160;',
 529                                 'section' => 'datetime/dateformat',
 530                         );
 531                 }
 532
 533                 // Info
 534                 $nowlocal = Xml::element( 'span', array( 'id' => 'wpLocalTime' ),
 535                         $wgLang->time( $now = wfTimestampNow(), true ) );
 536                 $nowserver = $wgLang->time( $now, false ) .
 537                         Html::hidden( 'wpServerTime', substr( $now, 8, 2 ) * 60 + substr( $now, 10, 2 ) );
 538
 539                 $defaultPreferences['nowserver'] = array(
 540                         'type' => 'info',
 541                         'raw' => 1,
 542                         'label-message' => 'servertime',
 543                         'default' => $nowserver,
 544                         'section' => 'datetime/timeoffset',
 545                 );
 546
 547                 $defaultPreferences['nowlocal'] = array(
 548                         'type' => 'info',
 549                         'raw' => 1,
 550                         'label-message' => 'localtime',
 551                         'default' => $nowlocal,
 552                         'section' => 'datetime/timeoffset',
 553                 );
 554
 555                 // Grab existing pref.
 556                 $tzOffset = $user->getOption( 'timecorrection' );
 557                 $tz = explode( '|', $tzOffset, 2 );
 558
 559                 $tzSetting = $tzOffset;
 560                 if ( count( $tz ) > 1 && $tz[0] == 'Offset' ) {
 561                         $minDiff = $tz[1];
 562                         $tzSetting = sprintf( '%+03d:%02d', floor( $minDiff / 60 ), abs( $minDiff ) % 60 );
 563                 }
 564
 565                 $defaultPreferences['timecorrection'] = array(
 566                         'class' => 'HTMLSelectOrOtherField',
 567                         'label-message' => 'timezonelegend',
 568                         'options' => self::getTimezoneOptions(),
 569                         'default' => $tzSetting,
 570                         'size' => 20,
 571                         'section' => 'datetime/timeoffset',
 572                 );
 573         }
 574
 575         static function renderingPreferences( $user, &$defaultPreferences ) {
 576                 ## Page Rendering ##############################
 577                 global $wgAllowUserCssPrefs;
 578                 if ( $wgAllowUserCssPrefs ) {
 579                         $defaultPreferences['underline'] = array(
 580                                 'type' => 'select',
 581                                 'options' => array(
 582                                         wfMsg( 'underline-never' ) => 0,
 583                                         wfMsg( 'underline-always' ) => 1,
 584                                         wfMsg( 'underline-default' ) => 2,
 585                                 ),
 586                                 'label-message' => 'tog-underline',
 587                                 'section' => 'rendering/advancedrendering',
 588                         );
 589                 }
 590
 591                 $stubThresholdValues = array( 50, 100, 500, 1000, 2000, 5000, 10000 );
 592                 $stubThresholdOptions = array( wfMsg( 'stub-threshold-disabled' ) => 0 );
 593                 foreach ( $stubThresholdValues as $value ) {
 594                         $stubThresholdOptions[wfMsg( 'size-bytes', $value )] = $value;
 595                 }
 596
 597                 $defaultPreferences['stubthreshold'] = array(
 598                         'type' => 'selectorother',
 599                         'section' => 'rendering/advancedrendering',
 600                         'options' => $stubThresholdOptions,
 601                         'size' => 20,
 602                         'label' => wfMsg( 'stub-threshold' ), // Raw HTML message. Yay?
 603                 );
 604
 605                 if ( $wgAllowUserCssPrefs ) {
 606                         $defaultPreferences['highlightbroken'] = array(
 607                                 'type' => 'toggle',
 608                                 'section' => 'rendering/advancedrendering',
 609                                 'label' => wfMsg( 'tog-highlightbroken' ), // Raw HTML
 610                         );
 611                         $defaultPreferences['showtoc'] = array(
 612                                 'type' => 'toggle',
 613                                 'section' => 'rendering/advancedrendering',
 614                                 'label-message' => 'tog-showtoc',
 615                         );
 616                 }
 617                 $defaultPreferences['nocache'] = array(
 618                         'type' => 'toggle',
 619                         'label-message' => 'tog-nocache',
 620                         'section' => 'rendering/advancedrendering',
 621                 );
 622                 $defaultPreferences['showhiddencats'] = array(
 623                         'type' => 'toggle',
 624                         'section' => 'rendering/advancedrendering',
 625                         'label-message' => 'tog-showhiddencats'
 626                 );
 627                 $defaultPreferences['showjumplinks'] = array(
 628                         'type' => 'toggle',
 629                         'section' => 'rendering/advancedrendering',
 630                         'label-message' => 'tog-showjumplinks',
 631                 );
 632
 633                 if ( $wgAllowUserCssPrefs ) {
 634                         $defaultPreferences['justify'] = array(
 635                                 'type' => 'toggle',
 636                                 'section' => 'rendering/advancedrendering',
 637                                 'label-message' => 'tog-justify',
 638                         );
 639                 }
 640
 641                 $defaultPreferences['numberheadings'] = array(
 642                         'type' => 'toggle',
 643                         'section' => 'rendering/advancedrendering',
 644                         'label-message' => 'tog-numberheadings',
 645                 );
 646         }
 647
 648         static function editingPreferences( $user, &$defaultPreferences ) {
 649                 global $wgUseExternalEditor, $wgAllowUserCssPrefs;
 650
 651                 ## Editing #####################################
 652                 $defaultPreferences['cols'] = array(
 653                         'type' => 'int',
 654                         'label-message' => 'columns',
 655                         'section' => 'editing/textboxsize',
 656                         'min' => 4,
 657                         'max' => 1000,
 658                 );
 659                 $defaultPreferences['rows'] = array(
 660                         'type' => 'int',
 661                         'label-message' => 'rows',
 662                         'section' => 'editing/textboxsize',
 663                         'min' => 4,
 664                         'max' => 1000,
 665                 );
 666
 667                 if ( $wgAllowUserCssPrefs ) {
 668                         $defaultPreferences['editfont'] = array(
 669                                 'type' => 'select',
 670                                 'section' => 'editing/advancedediting',
 671                                 'label-message' => 'editfont-style',
 672                                 'options' => array(
 673                                         wfMsg( 'editfont-default' ) => 'default',
 674                                         wfMsg( 'editfont-monospace' ) => 'monospace',
 675                                         wfMsg( 'editfont-sansserif' ) => 'sans-serif',
 676                                         wfMsg( 'editfont-serif' ) => 'serif',
 677                                 )
 678                         );
 679                 }
 680                 $defaultPreferences['previewontop'] = array(
 681                         'type' => 'toggle',
 682                         'section' => 'editing/advancedediting',
 683                         'label-message' => 'tog-previewontop',
 684                 );
 685                 $defaultPreferences['previewonfirst'] = array(
 686                         'type' => 'toggle',
 687                         'section' => 'editing/advancedediting',
 688                         'label-message' => 'tog-previewonfirst',
 689                 );
 690
 691                 if ( $wgAllowUserCssPrefs ) {
 692                         $defaultPreferences['editsection'] = array(
 693                                 'type' => 'toggle',
 694                                 'section' => 'editing/advancedediting',
 695                                 'label-message' => 'tog-editsection',
 696                         );
 697                 }
 698                 $defaultPreferences['editsectiononrightclick'] = array(
 699                         'type' => 'toggle',
 700                         'section' => 'editing/advancedediting',
 701                         'label-message' => 'tog-editsectiononrightclick',
 702                 );
 703                 $defaultPreferences['editondblclick'] = array(
 704                         'type' => 'toggle',
 705                         'section' => 'editing/advancedediting',
 706                         'label-message' => 'tog-editondblclick',
 707                 );
 708                 $defaultPreferences['showtoolbar'] = array(
 709                         'type' => 'toggle',
 710                         'section' => 'editing/advancedediting',
 711                         'label-message' => 'tog-showtoolbar',
 712                 );
 713                 $defaultPreferences['minordefault'] = array(
 714                         'type' => 'toggle',
 715                         'section' => 'editing/advancedediting',
 716                         'label-message' => 'tog-minordefault',
 717                 );
 718
 719                 if ( $wgUseExternalEditor ) {
 720                         $defaultPreferences['externaleditor'] = array(
 721                                 'type' => 'toggle',
 722                                 'section' => 'editing/advancedediting',
 723                                 'label-message' => 'tog-externaleditor',
 724                         );
 725                         $defaultPreferences['externaldiff'] = array(
 726                                 'type' => 'toggle',
 727                                 'section' => 'editing/advancedediting',
 728                                 'label-message' => 'tog-externaldiff',
 729                         );
 730                 }
 731
 732                 $defaultPreferences['forceeditsummary'] = array(
 733                         'type' => 'toggle',
 734                         'section' => 'editing/advancedediting',
 735                         'label-message' => 'tog-forceeditsummary',
 736                 );
 737
 738
 739                 $defaultPreferences['uselivepreview'] = array(
 740                         'type' => 'toggle',
 741                         'section' => 'editing/advancedediting',
 742                         'label-message' => 'tog-uselivepreview',
 743                 );
 744         }
 745
 746         static function rcPreferences( $user, &$defaultPreferences ) {
 747                 global $wgRCMaxAge, $wgUseRCPatrol, $wgLang;
 748
 749                 ## RecentChanges #####################################
 750                 $defaultPreferences['rcdays'] = array(
 751                         'type' => 'float',
 752                         'label-message' => 'recentchangesdays',
 753                         'section' => 'rc/displayrc',
 754                         'min' => 1,
 755                         'max' => ceil( $wgRCMaxAge / ( 3600 * 24 ) ),
 756                         'help' => wfMsgExt(
 757                                 'recentchangesdays-max',
 758                                 array( 'parsemag' ),
 759                                 $wgLang->formatNum( ceil( $wgRCMaxAge / ( 3600 * 24 ) ) )
 760                         )
 761                 );
 762                 $defaultPreferences['rclimit'] = array(
 763                         'type' => 'int',
 764                         'label-message' => 'recentchangescount',
 765                         'help-message' => 'prefs-help-recentchangescount',
 766                         'section' => 'rc/displayrc',
 767                 );
 768                 $defaultPreferences['usenewrc'] = array(
 769                         'type' => 'toggle',
 770                         'label-message' => 'tog-usenewrc',
 771                         'section' => 'rc/advancedrc',
 772                 );
 773                 $defaultPreferences['hideminor'] = array(
 774                         'type' => 'toggle',
 775                         'label-message' => 'tog-hideminor',
 776                         'section' => 'rc/advancedrc',
 777                 );
 778
 779                 if ( $wgUseRCPatrol ) {
 780                         $defaultPreferences['hidepatrolled'] = array(
 781                                 'type' => 'toggle',
 782                                 'section' => 'rc/advancedrc',
 783                                 'label-message' => 'tog-hidepatrolled',
 784                         );
 785                         $defaultPreferences['newpageshidepatrolled'] = array(
 786                                 'type' => 'toggle',
 787                                 'section' => 'rc/advancedrc',
 788                                 'label-message' => 'tog-newpageshidepatrolled',
 789                         );
 790                 }
 791
 792                 global $wgRCShowWatchingUsers;
 793                 if ( $wgRCShowWatchingUsers ) {
 794                         $defaultPreferences['shownumberswatching'] = array(
 795                                 'type' => 'toggle',
 796                                 'section' => 'rc/advancedrc',
 797                                 'label-message' => 'tog-shownumberswatching',
 798                         );
 799                 }
 800         }
 801
 802         static function watchlistPreferences( $user, &$defaultPreferences ) {
 803                 global $wgUseRCPatrol, $wgEnableAPI;
 804
 805                 ## Watchlist #####################################
 806                 $defaultPreferences['watchlistdays'] = array(
 807                         'type' => 'float',
 808                         'min' => 0,
 809                         'max' => 7,
 810                         'section' => 'watchlist/displaywatchlist',
 811                         'help' => wfMsgHtml( 'prefs-watchlist-days-max' ),
 812                         'label-message' => 'prefs-watchlist-days',
 813                 );
 814                 $defaultPreferences['wllimit'] = array(
 815                         'type' => 'int',
 816                         'min' => 0,
 817                         'max' => 1000,
 818                         'label-message' => 'prefs-watchlist-edits',
 819                         'help' => wfMsgHtml( 'prefs-watchlist-edits-max' ),
 820                         'section' => 'watchlist/displaywatchlist',
 821                 );
 822                 $defaultPreferences['extendwatchlist'] = array(
 823                         'type' => 'toggle',
 824                         'section' => 'watchlist/advancedwatchlist',
 825                         'label-message' => 'tog-extendwatchlist',
 826                 );
 827                 $defaultPreferences['watchlisthideminor'] = array(
 828                         'type' => 'toggle',
 829                         'section' => 'watchlist/advancedwatchlist',
 830                         'label-message' => 'tog-watchlisthideminor',
 831                 );
 832                 $defaultPreferences['watchlisthidebots'] = array(
 833                         'type' => 'toggle',
 834                         'section' => 'watchlist/advancedwatchlist',
 835                         'label-message' => 'tog-watchlisthidebots',
 836                 );
 837                 $defaultPreferences['watchlisthideown'] = array(
 838                         'type' => 'toggle',
 839                         'section' => 'watchlist/advancedwatchlist',
 840                         'label-message' => 'tog-watchlisthideown',
 841                 );
 842                 $defaultPreferences['watchlisthideanons'] = array(
 843                         'type' => 'toggle',
 844                         'section' => 'watchlist/advancedwatchlist',
 845                         'label-message' => 'tog-watchlisthideanons',
 846                 );
 847                 $defaultPreferences['watchlisthideliu'] = array(
 848                         'type' => 'toggle',
 849                         'section' => 'watchlist/advancedwatchlist',
 850                         'label-message' => 'tog-watchlisthideliu',
 851                 );
 852
 853                 if ( $wgUseRCPatrol ) {
 854                         $defaultPreferences['watchlisthidepatrolled'] = array(
 855                                 'type' => 'toggle',
 856                                 'section' => 'watchlist/advancedwatchlist',
 857                                 'label-message' => 'tog-watchlisthidepatrolled',
 858                         );
 859                 }
 860
 861                 if ( $wgEnableAPI ) {
 862                         # Some random gibberish as a proposed default
 863                         $hash = sha1( mt_rand() . microtime( true ) );
 864
 865                         $defaultPreferences['watchlisttoken'] = array(
 866                                 'type' => 'text',
 867                                 'section' => 'watchlist/advancedwatchlist',
 868                                 'label-message' => 'prefs-watchlist-token',
 869                                 'help' => wfMsgHtml( 'prefs-help-watchlist-token', $hash )
 870                         );
 871                 }
 872
 873                 $watchTypes = array(
 874                         'edit' => 'watchdefault',
 875                         'move' => 'watchmoves',
 876                         'delete' => 'watchdeletion'
 877                 );
 878
 879                 // Kinda hacky
 880                 if ( $user->isAllowed( 'createpage' ) || $user->isAllowed( 'createtalk' ) ) {
 881                         $watchTypes['read'] = 'watchcreations';
 882                 }
 883
 884                 foreach ( $watchTypes as $action => $pref ) {
 885                         if ( $user->isAllowed( $action ) ) {
 886                                 $defaultPreferences[$pref] = array(
 887                                         'type' => 'toggle',
 888                                         'section' => 'watchlist/advancedwatchlist',
 889                                         'label-message' => "tog-$pref",
 890                                 );
 891                         }
 892                 }
 893         }
 894
 895         static function searchPreferences( $user, &$defaultPreferences ) {
 896                 global $wgContLang;
 897
 898                 ## Search #####################################
 899                 $defaultPreferences['searchlimit'] = array(
 900                         'type' => 'int',
 901                         'label-message' => 'resultsperpage',
 902                         'section' => 'searchoptions/displaysearchoptions',
 903                         'min' => 0,
 904                 );
 905                 $defaultPreferences['contextlines'] = array(
 906                         'type' => 'int',
 907                         'label-message' => 'contextlines',
 908                         'section' => 'searchoptions/displaysearchoptions',
 909                         'min' => 0,
 910                 );
 911                 $defaultPreferences['contextchars'] = array(
 912                         'type' => 'int',
 913                         'label-message' => 'contextchars',
 914                         'section' => 'searchoptions/displaysearchoptions',
 915                         'min' => 0,
 916                 );
 917
 918                 global $wgEnableMWSuggest;
 919                 if ( $wgEnableMWSuggest ) {
 920                         $defaultPreferences['disablesuggest'] = array(
 921                                 'type' => 'toggle',
 922                                 'label-message' => 'mwsuggest-disable',
 923                                 'section' => 'searchoptions/displaysearchoptions',
 924                         );
 925                 }
 926
 927                 global $wgVectorUseSimpleSearch;
 928                 if ( $wgVectorUseSimpleSearch ) {
 929                         $defaultPreferences['vector-simplesearch'] = array(
 930                                 'type' => 'toggle',
 931                                 'label-message' => 'vector-simplesearch-preference',
 932                                 'section' => 'searchoptions/displaysearchoptions'
 933                         );
 934                 }
 935
 936                 $defaultPreferences['searcheverything'] = array(
 937                         'type' => 'toggle',
 938                         'label-message' => 'searcheverything-enable',
 939                         'section' => 'searchoptions/advancedsearchoptions',
 940                 );
 941
 942                 // Searchable namespaces back-compat with old format
 943                 $searchableNamespaces = SearchEngine::searchableNamespaces();
 944
 945                 $nsOptions = array();
 946
 947                 foreach ( $wgContLang->getNamespaces() as $ns => $name ) {
 948                         if ( $ns < 0 ) {
 949                                 continue;
 950                         }
 951
 952                         $displayNs = str_replace( '_', ' ', $name );
 953
 954                         if ( !$displayNs ) {
 955                                 $displayNs = wfMsg( 'blanknamespace' );
 956                         }
 957
 958                         $displayNs = htmlspecialchars( $displayNs );
 959                         $nsOptions[$displayNs] = $ns;
 960                 }
 961
 962                 $defaultPreferences['searchnamespaces'] = array(
 963                         'type' => 'multiselect',
 964                         'label-message' => 'defaultns',
 965                         'options' => $nsOptions,
 966                         'section' => 'searchoptions/advancedsearchoptions',
 967                         'prefix' => 'searchNs',
 968                 );
 969         }
 970
 971         static function miscPreferences( $user, &$defaultPreferences ) {
 972                 ## Misc #####################################
 973                 $defaultPreferences['diffonly'] = array(
 974                         'type' => 'toggle',
 975                         'section' => 'misc/diffs',
 976                         'label-message' => 'tog-diffonly',
 977                 );
 978                 $defaultPreferences['norollbackdiff'] = array(
 979                         'type' => 'toggle',
 980                         'section' => 'misc/diffs',
 981                         'label-message' => 'tog-norollbackdiff',
 982                 );
 983
 984                 // Stuff from Language::getExtraUserToggles()
 985                 global $wgContLang;
 986
 987                 $toggles = $wgContLang->getExtraUserToggles();
 988
 989                 foreach ( $toggles as $toggle ) {
 990                         $defaultPreferences[$toggle] = array(
 991                                 'type' => 'toggle',
 992                                 'section' => 'personal/i18n',
 993                                 'label-message' => "tog-$toggle",
 994                         );
 995                 }
 996         }
 997
 998         /**
 999          * @param $user The User object
1000          * @return Array: text/links to display as key; $skinkey as value
1001          */
1002         static function generateSkinOptions( $user ) {
1003                 global $wgDefaultSkin, $wgLang, $wgAllowUserCss, $wgAllowUserJs;
1004                 $ret = array();
1005
1006                 $mptitle = Title::newMainPage();
1007                 $previewtext = wfMsgHtml( 'skin-preview' );
1008
1009                 # Only show members of Skin::getSkinNames() rather than
1010                 # $skinNames (skins is all skin names from Language.php)
1011                 $validSkinNames = Skin::getUsableSkins();
1012
1013                 # Sort by UI skin name. First though need to update validSkinNames as sometimes
1014                 # the skinkey & UI skinname differ (e.g. "standard" skinkey is "Classic" in the UI).
1015                 foreach ( $validSkinNames as $skinkey => &$skinname ) {
1016                         $msgName = "skinname-{$skinkey}";
1017                         $localisedSkinName = wfMsg( $msgName );
1018                         if ( !wfEmptyMsg( $msgName, $localisedSkinName ) ) {
1019                                 $skinname = htmlspecialchars( $localisedSkinName );
1020                         }
1021                 }
1022                 asort( $validSkinNames );
1023                 $sk = $user->getSkin();
1024
1025                 foreach ( $validSkinNames as $skinkey => $sn ) {
1026                         $linkTools = array();
1027
1028                         # Mark the default skin
1029                         if ( $skinkey == $wgDefaultSkin ) {
1030                                 $linkTools[] = wfMsgHtml( 'default' );
1031                         }
1032
1033                         # Create preview link
1034                         $mplink = htmlspecialchars( $mptitle->getLocalURL( "useskin=$skinkey" ) );
1035                         $linkTools[] = "<a target='_blank' href=\"$mplink\">$previewtext</a>";
1036
1037                         # Create links to user CSS/JS pages
1038                         if ( $wgAllowUserCss ) {
1039                                 $cssPage = Title::makeTitleSafe( NS_USER, $user->getName() . '/' . $skinkey . '.css' );
1040                                 $linkTools[] = $sk->link( $cssPage, wfMsgHtml( 'prefs-custom-css' ) );
1041                         }
1042
1043                         if ( $wgAllowUserJs ) {
1044                                 $jsPage = Title::makeTitleSafe( NS_USER, $user->getName() . '/' . $skinkey . '.js' );
1045                                 $linkTools[] = $sk->link( $jsPage, wfMsgHtml( 'prefs-custom-js' ) );
1046                         }
1047
1048                         $display = $sn . ' ' . wfMsg( 'parentheses', $wgLang->pipeList( $linkTools ) );
1049                         $ret[$display] = $skinkey;
1050                 }
1051
1052                 return $ret;
1053         }
1054
1055         static function getDateOptions() {
1056                 global $wgLang;
1057                 $dateopts = $wgLang->getDatePreferences();
1058
1059                 $ret = array();
1060
1061                 if ( $dateopts ) {
1062                         if ( !in_array( 'default', $dateopts ) ) {
1063                                 $dateopts[] = 'default'; // Make sure default is always valid
1064                                                                                 // Bug 19237
1065                         }
1066
1067                         // KLUGE: site default might not be valid for user language
1068                         global $wgDefaultUserOptions;
1069                         if ( !in_array( $wgDefaultUserOptions['date'], $dateopts ) ) {
1070                                 $wgDefaultUserOptions['date'] = 'default';
1071                         }
1072
1073                         $epoch = wfTimestampNow();
1074                         foreach ( $dateopts as $key ) {
1075                                 if ( $key == 'default' ) {
1076                                         $formatted = wfMsgHtml( 'datedefault' );
1077                                 } else {
1078                                         $formatted = htmlspecialchars( $wgLang->timeanddate( $epoch, false, $key ) );
1079                                 }
1080                                 $ret[$formatted] = $key;
1081                         }
1082                 }
1083                 return $ret;
1084         }
1085
1086         static function getImageSizes() {
1087                 global $wgImageLimits;
1088
1089                 $ret = array();
1090
1091                 foreach ( $wgImageLimits as $index => $limits ) {
1092                         $display = "{$limits[0]}×{$limits[1]}" . wfMsg( 'unit-pixel' );
1093                         $ret[$display] = $index;
1094                 }
1095
1096                 return $ret;
1097         }
1098
1099         static function getThumbSizes() {
1100                 global $wgThumbLimits;
1101
1102                 $ret = array();
1103
1104                 foreach ( $wgThumbLimits as $index => $size ) {
1105                         $display = $size . wfMsg( 'unit-pixel' );
1106                         $ret[$display] = $index;
1107                 }
1108
1109                 return $ret;
1110         }
1111
1112         static function validateSignature( $signature, $alldata ) {
1113                 global $wgParser, $wgMaxSigChars, $wgLang;
1114                 if ( mb_strlen( $signature ) > $wgMaxSigChars ) {
1115                         return Xml::element( 'span', array( 'class' => 'error' ),
1116                                 wfMsgExt( 'badsiglength', 'parsemag',
1117                                         $wgLang->formatNum( $wgMaxSigChars )
1118                                 )
1119                         );
1120                 } elseif ( isset( $alldata['fancysig'] ) &&
1121                                 $alldata['fancysig'] &&
1122                                 false === $wgParser->validateSig( $signature ) ) {
1123                         return Xml::element( 'span', array( 'class' => 'error' ), wfMsg( 'badsig' ) );
1124                 } else {
1125                         return true;
1126                 }
1127         }
1128
1129         static function cleanSignature( $signature, $alldata ) {
1130                 global $wgParser;
1131                 if ( isset( $alldata['fancysig'] ) && $alldata['fancysig'] ) {
1132                         $signature = $wgParser->cleanSig( $signature );
1133                 } else {
1134                         // When no fancy sig used, make sure ~{3,5} get removed.
1135                         $signature = $wgParser->cleanSigInSig( $signature );
1136                 }
1137
1138                 return $signature;
1139         }
1140
1141         static function validateEmail( $email, $alldata ) {
1142                 if ( $email && !User::isValidEmailAddr( $email ) ) {
1143                         return wfMsgExt( 'invalidemailaddress', 'parseinline' );
1144                 }
1145
1146                 global $wgEmailConfirmToEdit;
1147                 if ( $wgEmailConfirmToEdit && !$email ) {
1148                         return wfMsgExt( 'noemailtitle', 'parseinline' );
1149                 }
1150                 return true;
1151         }
1152
1153         static function getFormObject( $user, $formClass = 'PreferencesForm' ) {
1154                 $formDescriptor = Preferences::getPreferences( $user );
1155                 $htmlForm = new $formClass( $formDescriptor, 'prefs' );
1156
1157                 $htmlForm->setSubmitText( wfMsg( 'saveprefs' ) );
1158                 # Used message keys: 'accesskey-preferences-save', 'tooltip-preferences-save'
1159                 $htmlForm->setSubmitTooltip( 'preferences-save' );
1160                 $htmlForm->setTitle( SpecialPage::getTitleFor( 'Preferences' ) );
1161                 $htmlForm->setSubmitID( 'prefsubmit' );
1162                 $htmlForm->setSubmitCallback( array( 'Preferences', 'tryFormSubmit' ) );
1163
1164                 return $htmlForm;
1165         }
1166
1167         static function getTimezoneOptions() {
1168                 $opt = array();
1169
1170                 global $wgLocalTZoffset;
1171
1172                 $opt[wfMsg( 'timezoneuseserverdefault' )] = "System|$wgLocalTZoffset";
1173                 $opt[wfMsg( 'timezoneuseoffset' )] = 'other';
1174                 $opt[wfMsg( 'guesstimezone' )] = 'guess';
1175
1176                 if ( function_exists( 'timezone_identifiers_list' ) ) {
1177                         # Read timezone list
1178                         $tzs = timezone_identifiers_list();
1179                         sort( $tzs );
1180
1181                         $tzRegions = array();
1182                         $tzRegions['Africa'] = wfMsg( 'timezoneregion-africa' );
1183                         $tzRegions['America'] = wfMsg( 'timezoneregion-america' );
1184                         $tzRegions['Antarctica'] = wfMsg( 'timezoneregion-antarctica' );
1185                         $tzRegions['Arctic'] = wfMsg( 'timezoneregion-arctic' );
1186                         $tzRegions['Asia'] = wfMsg( 'timezoneregion-asia' );
1187                         $tzRegions['Atlantic'] = wfMsg( 'timezoneregion-atlantic' );
1188                         $tzRegions['Australia'] = wfMsg( 'timezoneregion-australia' );
1189                         $tzRegions['Europe'] = wfMsg( 'timezoneregion-europe' );
1190                         $tzRegions['Indian'] = wfMsg( 'timezoneregion-indian' );
1191                         $tzRegions['Pacific'] = wfMsg( 'timezoneregion-pacific' );
1192                         asort( $tzRegions );
1193
1194                         $prefill = array_fill_keys( array_values( $tzRegions ), array() );
1195                         $opt = array_merge( $opt, $prefill );
1196
1197                         $now = date_create( 'now' );
1198
1199                         foreach ( $tzs as $tz ) {
1200                                 $z = explode( '/', $tz, 2 );
1201
1202                                 # timezone_identifiers_list() returns a number of
1203                                 # backwards-compatibility entries. This filters them out of the
1204                                 # list presented to the user.
1205                                 if ( count( $z ) != 2 || !array_key_exists( $z[0], $tzRegions ) ) {
1206                                         continue;
1207                                 }
1208
1209                                 # Localize region
1210                                 $z[0] = $tzRegions[$z[0]];
1211
1212                                 $minDiff = floor( timezone_offset_get( timezone_open( $tz ), $now ) / 60 );
1213
1214                                 $display = str_replace( '_', ' ', $z[0] . '/' . $z[1] );
1215                                 $value = "ZoneInfo|$minDiff|$tz";
1216
1217                                 $opt[$z[0]][$display] = $value;
1218                         }
1219                 }
1220                 return $opt;
1221         }
1222
1223         static function filterIntval( $value, $alldata ){
1224                 return intval( $value );
1225         }
1226
1227         static function filterTimezoneInput( $tz, $alldata ) {
1228                 $data = explode( '|', $tz, 3 );
1229                 switch ( $data[0] ) {
1230                         case 'ZoneInfo':
1231                         case 'System':
1232                                 return $tz;
1233                         default:
1234                                 $data = explode( ':', $tz, 2 );
1235                                 if ( count( $data ) == 2 ) {
1236                                         $data[0] = intval( $data[0] );
1237                                         $data[1] = intval( $data[1] );
1238                                         $minDiff = abs( $data[0] ) * 60 + $data[1];
1239                                         if ( $data[0] < 0 ) $minDiff = - $minDiff;
1240                                 } else {
1241                                         $minDiff = intval( $data[0] ) * 60;
1242                                 }
1243
1244                                 # Max is +14:00 and min is -12:00, see:
1245                                 # http://en.wikipedia.org/wiki/Timezone
1246                                 $minDiff = min( $minDiff, 840 );  # 14:00
1247                                 $minDiff = max( $minDiff, - 720 ); # -12:00
1248                                 return 'Offset|' . $minDiff;
1249                 }
1250         }
1251
1252         static function tryFormSubmit( $formData, $entryPoint = 'internal' ) {
1253                 global $wgUser, $wgEmailAuthentication, $wgEnableEmail;
1254
1255                 $result = true;
1256
1257                 // Filter input
1258                 foreach ( array_keys( $formData ) as $name ) {
1259                         if ( isset( self::$saveFilters[$name] ) ) {
1260                                 $formData[$name] =
1261                                         call_user_func( self::$saveFilters[$name], $formData[$name], $formData );
1262                         }
1263                 }
1264
1265                 // Stuff that shouldn't be saved as a preference.
1266                 $saveBlacklist = array(
1267                         'realname',
1268                         'emailaddress',
1269                 );
1270
1271                 if ( $wgEnableEmail ) {
1272                         $newaddr = $formData['emailaddress'];
1273                         $oldaddr = $wgUser->getEmail();
1274                         if ( ( $newaddr != '' ) && ( $newaddr != $oldaddr ) ) {
1275                                 # the user has supplied a new email address on the login page
1276                                 # new behaviour: set this new emailaddr from login-page into user database record
1277                                 $wgUser->setEmail( $newaddr );
1278                                 # but flag as "dirty" = unauthenticated
1279                                 $wgUser->invalidateEmail();
1280                                 if ( $wgEmailAuthentication ) {
1281                                         # Mail a temporary password to the dirty address.
1282                                         # User can come back through the confirmation URL to re-enable email.
1283                                         $type = $oldaddr != '' ? 'changed' : 'set';
1284                                         $result = $wgUser->sendConfirmationMail( $type );
1285                                         if ( !$result->isGood() ) {
1286                                                 return htmlspecialchars( $result->getWikiText( 'mailerror' ) );
1287                                         } elseif ( $entryPoint == 'ui' ) {
1288                                                 $result = 'eauth';
1289                                         }
1290                                 }
1291                         } else {
1292                                 $wgUser->setEmail( $newaddr );
1293                         }
1294                         if ( $oldaddr != $newaddr ) {
1295                                 wfRunHooks( 'PrefsEmailAudit', array( $wgUser, $oldaddr, $newaddr ) );
1296                         }
1297                 }
1298
1299                 // Fortunately, the realname field is MUCH simpler
1300                 global $wgHiddenPrefs;
1301                 if ( !in_array( 'realname', $wgHiddenPrefs ) ) {
1302                         $realName = $formData['realname'];
1303                         $wgUser->setRealName( $realName );
1304                 }
1305
1306                 foreach ( $saveBlacklist as $b ) {
1307                         unset( $formData[$b] );
1308                 }
1309
1310                 //  Keeps old preferences from interfering due to back-compat
1311                 //  code, etc.
1312                 $wgUser->resetOptions();
1313
1314                 foreach ( $formData as $key => $value ) {
1315                         $wgUser->setOption( $key, $value );
1316                 }
1317
1318                 $wgUser->saveSettings();
1319
1320                 return $result;
1321         }
1322
1323         public static function tryUISubmit( $formData ) {
1324                 $res = self::tryFormSubmit( $formData, 'ui' );
1325
1326                 if ( $res ) {
1327                         $urlOptions = array( 'success' );
1328
1329                         if ( $res === 'eauth' ) {
1330                                 $urlOptions[] = 'eauth';
1331                         }
1332
1333                         $queryString = implode( '&', $urlOptions );
1334
1335                         $url = SpecialPage::getTitleFor( 'Preferences' )->getFullURL( $queryString );
1336
1337                         global $wgOut;
1338                         $wgOut->redirect( $url );
1339                 }
1340
1341                 return Status::newGood();
1342         }
1343
1344         public static function loadOldSearchNs( $user ) {
1345                 $searchableNamespaces = SearchEngine::searchableNamespaces();
1346                 // Back compat with old format
1347                 $arr = array();
1348
1349                 foreach ( $searchableNamespaces as $ns => $name ) {
1350                         if ( $user->getOption( 'searchNs' . $ns ) ) {
1351                                 $arr[] = $ns;
1352                         }
1353                 }
1354
1355                 return $arr;
1356         }
1357 }
1358
1359 /** Some tweaks to allow js prefs to work */
1360 class PreferencesForm extends HTMLForm {
1361         function wrapForm( $html ) {
1362                 $html = Xml::tags( 'div', array( 'id' => 'preferences' ), $html );
1363
1364                 return parent::wrapForm( $html );
1365         }
1366
1367         function getButtons() {
1368                 $html = parent::getButtons();
1369
1370                 global $wgUser;
1371
1372                 $sk = $wgUser->getSkin();
1373                 $t = SpecialPage::getTitleFor( 'Preferences', 'reset' );
1374
1375                 $html .= "\n" . $sk->link( $t, wfMsgHtml( 'restoreprefs' ) );
1376
1377                 $html = Xml::tags( 'div', array( 'class' => 'mw-prefs-buttons' ), $html );
1378
1379                 return $html;
1380         }
1381
1382         function filterDataForSubmit( $data ) {
1383                 // Support for separating MultiSelect preferences into multiple preferences
1384                 // Due to lack of array support.
1385                 foreach ( $this->mFlatFields as $fieldname => $field ) {
1386                         $info = $field->mParams;
1387                         if ( $field instanceof HTMLMultiSelectField ) {
1388                                 $options = HTMLFormField::flattenOptions( $info['options'] );
1389                                 $prefix = isset( $info['prefix'] ) ? $info['prefix'] : $fieldname;
1390
1391                                 foreach ( $options as $opt ) {
1392                                         $data["$prefix$opt"] = in_array( $opt, $data[$fieldname] );
1393                                 }
1394
1395                                 unset( $data[$fieldname] );
1396                         }
1397                 }
1398
1399                 return $data;
1400         }
1401 }