resources/mediawiki/mediawiki.util.js

   1 /**
   2  * Implements mediaWiki.util library
   3  */
   4 ( function ( mw, $ ) {
   5         'use strict';
   6
   7         // Local cache and alias
   8         var hideMessageTimeout,
   9                 messageBoxEvents = false,
  10                 util = {
  11
  12                 /**
  13                  * Initialisation
  14                  * (don't call before document ready)
  15                  */
  16                 init: function () {
  17                         var profile, $tocTitle, $tocToggleLink, hideTocCookie;
  18
  19                         /* Set up $.messageBox */
  20                         $.messageBoxNew( {
  21                                 id: 'mw-js-message',
  22                                 parent: '#content'
  23                         } );
  24
  25                         /* Set tooltipAccessKeyPrefix */
  26                         profile = $.client.profile();
  27
  28                         // Opera on any platform
  29                         if ( profile.name === 'opera' ) {
  30                                 util.tooltipAccessKeyPrefix = 'shift-esc-';
  31
  32                         // Chrome on any platform
  33                         } else if ( profile.name === 'chrome' ) {
  34
  35                                 util.tooltipAccessKeyPrefix = (
  36                                         profile.platform === 'mac'
  37                                                 // Chrome on Mac
  38                                                 ? 'ctrl-option-'
  39                                                 : profile.platform === 'win'
  40                                                         // Chrome on Windows
  41                                                         // (both alt- and alt-shift work, but alt-f triggers Chrome wrench menu
  42                                                         // which alt-shift-f does not)
  43                                                         ? 'alt-shift-'
  44                                                         // Chrome on other (Ubuntu?)
  45                                                         : 'alt-'
  46                                 );
  47
  48                         // Non-Windows Safari with webkit_version > 526
  49                         } else if ( profile.platform !== 'win'
  50                                 && profile.name === 'safari'
  51                                 && profile.layoutVersion > 526 ) {
  52                                 util.tooltipAccessKeyPrefix = 'ctrl-alt-';
  53
  54                         // Safari/Konqueror on any platform, or any browser on Mac
  55                         // (but not Safari on Windows)
  56                         } else if ( !( profile.platform === 'win' && profile.name === 'safari' )
  57                                                         && ( profile.name === 'safari'
  58                                                         || profile.platform === 'mac'
  59                                                         || profile.name === 'konqueror' ) ) {
  60                                 util.tooltipAccessKeyPrefix = 'ctrl-';
  61
  62                         // Firefox 2.x and later
  63                         } else if ( profile.name === 'firefox' && profile.versionBase > '1' ) {
  64                                 util.tooltipAccessKeyPrefix = 'alt-shift-';
  65                         }
  66
  67                         /* Fill $content var */
  68                         if ( $( '#bodyContent' ).length ) {
  69                                 // Vector, Monobook, Chick etc.
  70                                 util.$content = $( '#bodyContent' );
  71
  72                         } else if ( $( '#mw_contentholder' ).length ) {
  73                                 // Modern
  74                                 util.$content = $( '#mw_contentholder' );
  75
  76                         } else if ( $( '#article' ).length ) {
  77                                 // Standard, CologneBlue
  78                                 util.$content = $( '#article' );
  79
  80                         } else {
  81                                 // #content is present on almost all if not all skins. Most skins (the above cases)
  82                                 // have #content too, but as an outer wrapper instead of the article text container.
  83                                 // The skins that don't have an outer wrapper do have #content for everything
  84                                 // so it's a good fallback
  85                                 util.$content = $( '#content' );
  86                         }
  87
  88                         // Table of contents toggle
  89                         $tocTitle = $( '#toctitle' );
  90                         $tocToggleLink = $( '#togglelink' );
  91                         // Only add it if there is a TOC and there is no toggle added already
  92                         if ( $( '#toc' ).length && $tocTitle.length && !$tocToggleLink.length ) {
  93                                 hideTocCookie = $.cookie( 'mw_hidetoc' );
  94                                         $tocToggleLink = $( '<a href="#" class="internal" id="togglelink"></a>' )
  95                                                 .text( mw.msg( 'hidetoc' ) )
  96                                                 .click( function ( e ) {
  97                                                         e.preventDefault();
  98                                                         util.toggleToc( $(this) );
  99                                                 } );
 100                                 $tocTitle.append(
 101                                         $tocToggleLink
 102                                                 .wrap( '<span class="toctoggle"></span>' )
 103                                                 .parent()
 104                                                         .prepend( '&nbsp;[' )
 105                                                         .append( ']&nbsp;' )
 106                                 );
 107
 108                                 if ( hideTocCookie === '1' ) {
 109                                         util.toggleToc( $tocToggleLink );
 110                                 }
 111                         }
 112                 },
 113
 114                 /* Main body */
 115
 116                 /**
 117                  * Encode the string like PHP's rawurlencode
 118                  *
 119                  * @param str string String to be encoded
 120                  */
 121                 rawurlencode: function ( str ) {
 122                         str = String( str );
 123                         return encodeURIComponent( str )
 124                                 .replace( /!/g, '%21' ).replace( /'/g, '%27' ).replace( /\(/g, '%28' )
 125                                 .replace( /\)/g, '%29' ).replace( /\*/g, '%2A' ).replace( /~/g, '%7E' );
 126                 },
 127
 128                 /**
 129                  * Encode page titles for use in a URL
 130                  * We want / and : to be included as literal characters in our title URLs
 131                  * as they otherwise fatally break the title
 132                  *
 133                  * @param str string String to be encoded
 134                  */
 135                 wikiUrlencode: function ( str ) {
 136                         return util.rawurlencode( str )
 137                                 .replace( /%20/g, '_' ).replace( /%3A/g, ':' ).replace( /%2F/g, '/' );
 138                 },
 139
 140                 /**
 141                  * Get the link to a page name (relative to wgServer)
 142                  *
 143                  * @param str String: Page name to get the link for.
 144                  * @return String: Location for a page with name of 'str' or boolean false on error.
 145                  */
 146                 wikiGetlink: function ( str ) {
 147                         return mw.config.get( 'wgArticlePath' ).replace( '$1',
 148                                 util.wikiUrlencode( typeof str === 'string' ? str : mw.config.get( 'wgPageName' ) ) );
 149                 },
 150
 151                 /**
 152                  * Get address to a script in the wiki root.
 153                  * For index.php use mw.config.get( 'wgScript' )
 154                  *
 155                  * @since 1.18
 156                  * @param str string Name of script (eg. 'api'), defaults to 'index'
 157                  * @return string Address to script (eg. '/w/api.php' )
 158                  */
 159                 wikiScript: function ( str ) {
 160                         return mw.config.get( 'wgScriptPath' ) + '/' + ( str || 'index' ) +
 161                                 mw.config.get( 'wgScriptExtension' );
 162                 },
 163
 164                 /**
 165                  * Append a new style block to the head and return the CSSStyleSheet object.
 166                  * Use .ownerNode to access the <style> element, or use mw.loader.addStyleTag.
 167                  * This function returns the styleSheet object for convience (due to cross-browsers
 168                  * difference as to where it is located).
 169                  * @example
 170                  * <code>
 171                  * var sheet = mw.util.addCSS('.foobar { display: none; }');
 172                  * $(foo).click(function () {
 173                  *     // Toggle the sheet on and off
 174                  *     sheet.disabled = !sheet.disabled;
 175                  * });
 176                  * </code>
 177                  *
 178                  * @param text string CSS to be appended
 179                  * @return CSSStyleSheet (use .ownerNode to get to the <style> element)
 180                  */
 181                 addCSS: function ( text ) {
 182                         var s = mw.loader.addStyleTag( text );
 183                         return s.sheet || s;
 184                 },
 185
 186                 /**
 187                  * Hide/show the table of contents element
 188                  *
 189                  * @param $toggleLink jQuery A jQuery object of the toggle link.
 190                  * @param callback function Function to be called after the toggle is
 191                  * completed (including the animation) (optional)
 192                  * @return mixed Boolean visibility of the toc (true if it's visible)
 193                  * or Null if there was no table of contents.
 194                  */
 195                 toggleToc: function ( $toggleLink, callback ) {
 196                         var $tocList = $( '#toc ul:first' );
 197
 198                         // This function shouldn't be called if there's no TOC,
 199                         // but just in case...
 200                         if ( $tocList.length ) {
 201                                 if ( $tocList.is( ':hidden' ) ) {
 202                                         $tocList.slideDown( 'fast', callback );
 203                                         $toggleLink.text( mw.msg( 'hidetoc' ) );
 204                                         $( '#toc' ).removeClass( 'tochidden' );
 205                                         $.cookie( 'mw_hidetoc', null, {
 206                                                 expires: 30,
 207                                                 path: '/'
 208                                         } );
 209                                         return true;
 210                                 } else {
 211                                         $tocList.slideUp( 'fast', callback );
 212                                         $toggleLink.text( mw.msg( 'showtoc' ) );
 213                                         $( '#toc' ).addClass( 'tochidden' );
 214                                         $.cookie( 'mw_hidetoc', '1', {
 215                                                 expires: 30,
 216                                                 path: '/'
 217                                         } );
 218                                         return false;
 219                                 }
 220                         } else {
 221                                 return null;
 222                         }
 223                 },
 224
 225                 /**
 226                  * Grab the URL parameter value for the given parameter.
 227                  * Returns null if not found.
 228                  *
 229                  * @param param string The parameter name.
 230                  * @param url string URL to search through (optional)
 231                  * @return mixed Parameter value or null.
 232                  */
 233                 getParamValue: function ( param, url ) {
 234                         url = url || document.location.href;
 235                         // Get last match, stop at hash
 236                         var     re = new RegExp( '^[^#]*[&?]' + $.escapeRE( param ) + '=([^&#]*)' ),
 237                                 m = re.exec( url );
 238                         if ( m ) {
 239                                 // Beware that decodeURIComponent is not required to understand '+'
 240                                 // by spec, as encodeURIComponent does not produce it.
 241                                 return decodeURIComponent( m[1].replace( /\+/g, '%20' ) );
 242                         }
 243                         return null;
 244                 },
 245
 246                 /**
 247                  * @var string
 248                  * Access key prefix. Will be re-defined based on browser/operating system
 249                  * detection in mw.util.init().
 250                  */
 251                 tooltipAccessKeyPrefix: 'alt-',
 252
 253                 /**
 254                  * @var RegExp
 255                  * Regex to match accesskey tooltips.
 256                  */
 257                 tooltipAccessKeyRegexp: /\[(ctrl-)?(alt-)?(shift-)?(esc-)?(.)\]$/,
 258
 259                 /**
 260                  * Add the appropriate prefix to the accesskey shown in the tooltip.
 261                  * If the nodeList parameter is given, only those nodes are updated;
 262                  * otherwise, all the nodes that will probably have accesskeys by
 263                  * default are updated.
 264                  *
 265                  * @param $nodes {Array|jQuery} [optional] A jQuery object, or array
 266                  * of elements to update.
 267                  */
 268                 updateTooltipAccessKeys: function ( $nodes ) {
 269                         if ( !$nodes ) {
 270                                 // Rather than going into a loop of all anchor tags, limit to few elements that
 271                                 // contain the relevant anchor tags.
 272                                 // Input and label are rare enough that no such optimization is needed
 273                                 $nodes = $( '#column-one a, #mw-head a, #mw-panel a, #p-logo a, input, label' );
 274                         } else if ( !( $nodes instanceof $ ) ) {
 275                                 $nodes = $( $nodes );
 276                         }
 277
 278                         $nodes.attr( 'title', function ( i, val ) {
 279                                 if ( val && util.tooltipAccessKeyRegexp.exec( val ) ) {
 280                                         return val.replace( util.tooltipAccessKeyRegexp,
 281                                                 '[' + util.tooltipAccessKeyPrefix + '$5]' );
 282                                 }
 283                                 return val;
 284                         } );
 285                 },
 286
 287                 /*
 288                  * @var jQuery
 289                  * A jQuery object that refers to the page-content element
 290                  * Populated by init().
 291                  */
 292                 $content: null,
 293
 294                 /**
 295                  * Add a link to a portlet menu on the page, such as:
 296                  *
 297                  * p-cactions (Content actions), p-personal (Personal tools),
 298                  * p-navigation (Navigation), p-tb (Toolbox)
 299                  *
 300                  * The first three paramters are required, the others are optional and
 301                  * may be null. Though providing an id and tooltip is recommended.
 302                  *
 303                  * By default the new link will be added to the end of the list. To
 304                  * add the link before a given existing item, pass the DOM node
 305                  * (document.getElementById( 'foobar' )) or the jQuery-selector
 306                  * ( '#foobar' ) of that item.
 307                  *
 308                  * @example mw.util.addPortletLink(
 309                  *       'p-tb', 'http://mediawiki.org/',
 310                  *       'MediaWiki.org', 't-mworg', 'Go to MediaWiki.org ', 'm', '#t-print'
 311                  * )
 312                  *
 313                  * @param portlet string ID of the target portlet ( 'p-cactions' or 'p-personal' etc.)
 314                  * @param href string Link URL
 315                  * @param text string Link text
 316                  * @param id string ID of the new item, should be unique and preferably have
 317                  * the appropriate prefix ( 'ca-', 'pt-', 'n-' or 't-' )
 318                  * @param tooltip string Text to show when hovering over the link, without accesskey suffix
 319                  * @param accesskey string Access key to activate this link (one character, try
 320                  * to avoid conflicts. Use $( '[accesskey=x]' ).get() in the console to
 321                  * see if 'x' is already used.
 322                  * @param nextnode mixed DOM Node or jQuery-selector string of the item that the new
 323                  * item should be added before, should be another item in the same
 324                  * list, it will be ignored otherwise
 325                  *
 326                  * @return mixed The DOM Node of the added item (a ListItem or Anchor element,
 327                  * depending on the skin) or null if no element was added to the document.
 328                  */
 329                 addPortletLink: function ( portlet, href, text, id, tooltip, accesskey, nextnode ) {
 330                         var $item, $link, $portlet, $ul;
 331
 332                         // Check if there's atleast 3 arguments to prevent a TypeError
 333                         if ( arguments.length < 3 ) {
 334                                 return null;
 335                         }
 336                         // Setup the anchor tag
 337                         $link = $( '<a>' ).attr( 'href', href ).text( text );
 338                         if ( tooltip ) {
 339                                 $link.attr( 'title', tooltip );
 340                         }
 341
 342                         // Some skins don't have any portlets
 343                         // just add it to the bottom of their 'sidebar' element as a fallback
 344                         switch ( mw.config.get( 'skin' ) ) {
 345                         case 'standard':
 346                         case 'cologneblue':
 347                                 $( '#quickbar' ).append( $link.after( '<br/>' ) );
 348                                 return $link[0];
 349                         case 'nostalgia':
 350                                 $( '#searchform' ).before( $link ).before( ' &#124; ' );
 351                                 return $link[0];
 352                         default: // Skins like chick, modern, monobook, myskin, simple, vector...
 353
 354                                 // Select the specified portlet
 355                                 $portlet = $( '#' + portlet );
 356                                 if ( $portlet.length === 0 ) {
 357                                         return null;
 358                                 }
 359                                 // Select the first (most likely only) unordered list inside the portlet
 360                                 $ul = $portlet.find( 'ul' ).eq( 0 );
 361
 362                                 // If it didn't have an unordered list yet, create it
 363                                 if ( $ul.length === 0 ) {
 364
 365                                         $ul = $( '<ul>' );
 366
 367                                         // If there's no <div> inside, append it to the portlet directly
 368                                         if ( $portlet.find( 'div:first' ).length === 0 ) {
 369                                                 $portlet.append( $ul );
 370                                         } else {
 371                                                 // otherwise if there's a div (such as div.body or div.pBody)
 372                                                 // append the <ul> to last (most likely only) div
 373                                                 $portlet.find( 'div' ).eq( -1 ).append( $ul );
 374                                         }
 375                                 }
 376                                 // Just in case..
 377                                 if ( $ul.length === 0 ) {
 378                                         return null;
 379                                 }
 380
 381                                 // Unhide portlet if it was hidden before
 382                                 $portlet.removeClass( 'emptyPortlet' );
 383
 384                                 // Wrap the anchor tag in a list item (and a span if $portlet is a Vector tab)
 385                                 // and back up the selector to the list item
 386                                 if ( $portlet.hasClass( 'vectorTabs' ) ) {
 387                                         $item = $link.wrap( '<li><span></span></li>' ).parent().parent();
 388                                 } else {
 389                                         $item = $link.wrap( '<li></li>' ).parent();
 390                                 }
 391
 392                                 // Implement the properties passed to the function
 393                                 if ( id ) {
 394                                         $item.attr( 'id', id );
 395                                 }
 396                                 if ( accesskey ) {
 397                                         $link.attr( 'accesskey', accesskey );
 398                                         tooltip += ' [' + accesskey + ']';
 399                                         $link.attr( 'title', tooltip );
 400                                 }
 401                                 if ( accesskey && tooltip ) {
 402                                         util.updateTooltipAccessKeys( $link );
 403                                 }
 404
 405                                 // Where to put our node ?
 406                                 // - nextnode is a DOM element (was the only option before MW 1.17, in wikibits.js)
 407                                 if ( nextnode && nextnode.parentNode === $ul[0] ) {
 408                                         $(nextnode).before( $item );
 409
 410                                 // - nextnode is a CSS selector for jQuery
 411                                 } else if ( typeof nextnode === 'string' && $ul.find( nextnode ).length !== 0 ) {
 412                                         $ul.find( nextnode ).eq( 0 ).before( $item );
 413
 414                                 // If the jQuery selector isn't found within the <ul>,
 415                                 // or if nextnode was invalid or not passed at all,
 416                                 // then just append it at the end of the <ul> (this is the default behaviour)
 417                                 } else {
 418                                         $ul.append( $item );
 419                                 }
 420
 421
 422                                 return $item[0];
 423                         }
 424                 },
 425
 426                 /**
 427                  * Add a little box at the top of the screen to inform the user of
 428                  * something, replacing any previous message.
 429                  * Calling with no arguments, with an empty string or null will hide the message
 430                  *
 431                  * @param message {mixed} The DOM-element, jQuery object or HTML-string to be put inside the message box.
 432                  * @param className {String} Used in adding a class; should be different for each call
 433                  * to allow CSS/JS to hide different boxes. null = no class used.
 434                  * @return {Boolean} True on success, false on failure.
 435                  */
 436                 jsMessage: function ( message, className ) {
 437                         var $messageDiv = $( '#mw-js-message' );
 438
 439                         if ( !arguments.length || message === '' || message === null ) {
 440                                 $messageDiv.empty().hide();
 441                                 stopHideMessageTimeout();
 442                                 return true; // Emptying and hiding message is intended behaviour, return true
 443                         } else {
 444                                 // We special-case skin structures provided by the software. Skins that
 445                                 // choose to abandon or significantly modify our formatting can just define
 446                                 // an mw-js-message div to start with.
 447                                 if ( !$messageDiv.length ) {
 448                                         $messageDiv = $( '<div id="mw-js-message"></div>' );
 449                                         if ( util.$content.parent().length ) {
 450                                                 util.$content.parent().prepend( $messageDiv );
 451                                         } else {
 452                                                 return false;
 453                                         }
 454                                 }
 455
 456                                 if ( !messageBoxEvents ) {
 457                                         messageBoxEvents = true;
 458                                         $messageDiv
 459                                                 .on( {
 460                                                         'mouseenter': stopHideMessageTimeout,
 461                                                         'mouseleave': startHideMessageTimeout,
 462                                                         'click': hideMessage
 463                                                 } )
 464                                                 .on( 'click', 'a', function ( e ) {
 465                                                         // Prevent links, even those that don't exist yet, from causing the
 466                                                         // message box to close when clicked
 467                                                         e.stopPropagation();
 468                                                 } );
 469                                 }
 470
 471                                 if ( className ) {
 472                                         $messageDiv.prop( 'className', 'mw-js-message-' + className );
 473                                 }
 474
 475                                 if ( typeof message === 'object' ) {
 476                                         $messageDiv.empty();
 477                                         $messageDiv.append( message );
 478                                 } else {
 479                                         $messageDiv.html( message );
 480                                 }
 481
 482                                 $messageDiv.slideDown();
 483                                 startHideMessageTimeout();
 484                                 return true;
 485                         }
 486                 },
 487
 488                 /**
 489                  * Validate a string as representing a valid e-mail address
 490                  * according to HTML5 specification. Please note the specification
 491                  * does not validate a domain with one character.
 492                  *
 493                  * @todo FIXME: should be moved to or replaced by a JavaScript validation module.
 494                  *
 495                  * @param mailtxt string E-mail address to be validated.
 496                  * @return mixed Null if mailtxt was an empty string, otherwise true/false
 497                  * is determined by validation.
 498                  */
 499                 validateEmail: function ( mailtxt ) {
 500                         var rfc5322_atext, rfc1034_ldh_str, HTML5_email_regexp;
 501
 502                         if ( mailtxt === '' ) {
 503                                 return null;
 504                         }
 505
 506                         /**
 507                          * HTML5 defines a string as valid e-mail address if it matches
 508                          * the ABNF:
 509                          *      1 * ( atext / "." ) "@" ldh-str 1*( "." ldh-str )
 510                          * With:
 511                          * - atext      : defined in RFC 5322 section 3.2.3
 512                          * - ldh-str : defined in RFC 1034 section 3.5
 513                          *
 514                          * (see STD 68 / RFC 5234 http://tools.ietf.org/html/std68):
 515                          */
 516
 517                         /**
 518                          * First, define the RFC 5322 'atext' which is pretty easy:
 519                          * atext = ALPHA / DIGIT / ; Printable US-ASCII
 520                                                  "!" / "#" /     ; characters not including
 521                                                  "$" / "%" /     ; specials. Used for atoms.
 522                                                  "&" / "'" /
 523                                                  "*" / "+" /
 524                                                  "-" / "/" /
 525                                                  "=" / "?" /
 526                                                  "^" / "_" /
 527                                                  "`" / "{" /
 528                                                  "|" / "}" /
 529                                                  "~"
 530                         */
 531                         rfc5322_atext = "a-z0-9!#$%&'*+\\-/=?^_`{|}~";
 532
 533                         /**
 534                          * Next define the RFC 1034 'ldh-str'
 535                          *      <domain> ::= <subdomain> | " "
 536                          *      <subdomain> ::= <label> | <subdomain> "." <label>
 537                          *      <label> ::= <letter> [ [ <ldh-str> ] <let-dig> ]
 538                          *      <ldh-str> ::= <let-dig-hyp> | <let-dig-hyp> <ldh-str>
 539                          *      <let-dig-hyp> ::= <let-dig> | "-"
 540                          *      <let-dig> ::= <letter> | <digit>
 541                          */
 542                         rfc1034_ldh_str = "a-z0-9\\-";
 543
 544                         HTML5_email_regexp = new RegExp(
 545                                 // start of string
 546                                 '^'
 547                                 +
 548                                 // User part which is liberal :p
 549                                 '[' + rfc5322_atext + '\\.]+'
 550                                 +
 551                                 // 'at'
 552                                 '@'
 553                                 +
 554                                 // Domain first part
 555                                 '[' + rfc1034_ldh_str + ']+'
 556                                 +
 557                                 // Optional second part and following are separated by a dot
 558                                 '(?:\\.[' + rfc1034_ldh_str + ']+)*'
 559                                 +
 560                                 // End of string
 561                                 '$',
 562                                 // RegExp is case insensitive
 563                                 'i'
 564                         );
 565                         return (null !== mailtxt.match( HTML5_email_regexp ) );
 566                 },
 567
 568                 /**
 569                  * Note: borrows from IP::isIPv4
 570                  *
 571                  * @param address string
 572                  * @param allowBlock boolean
 573                  * @return boolean
 574                  */
 575                 isIPv4Address: function ( address, allowBlock ) {
 576                         if ( typeof address !== 'string' ) {
 577                                 return false;
 578                         }
 579
 580                         var     block = allowBlock ? '(?:\\/(?:3[0-2]|[12]?\\d))?' : '',
 581                                 RE_IP_BYTE = '(?:25[0-5]|2[0-4][0-9]|1[0-9][0-9]|0?[0-9]?[0-9])',
 582                                 RE_IP_ADD = '(?:' + RE_IP_BYTE + '\\.){3}' + RE_IP_BYTE;
 583
 584                         return address.search( new RegExp( '^' + RE_IP_ADD + block + '$' ) ) !== -1;
 585                 },
 586
 587                 /**
 588                  * Note: borrows from IP::isIPv6
 589                  *
 590                  * @param address string
 591                  * @param allowBlock boolean
 592                  * @return boolean
 593                  */
 594                 isIPv6Address: function ( address, allowBlock ) {
 595                         if ( typeof address !== 'string' ) {
 596                                 return false;
 597                         }
 598
 599                         var     block = allowBlock ? '(?:\\/(?:12[0-8]|1[01][0-9]|[1-9]?\\d))?' : '',
 600                                 RE_IPV6_ADD =
 601                         '(?:' + // starts with "::" (including "::")
 602                         ':(?::|(?::' + '[0-9A-Fa-f]{1,4}' + '){1,7})' +
 603                         '|' + // ends with "::" (except "::")
 604                         '[0-9A-Fa-f]{1,4}' + '(?::' + '[0-9A-Fa-f]{1,4}' + '){0,6}::' +
 605                         '|' + // contains no "::"
 606                         '[0-9A-Fa-f]{1,4}' + '(?::' + '[0-9A-Fa-f]{1,4}' + '){7}' +
 607                         ')';
 608
 609                         if ( address.search( new RegExp( '^' + RE_IPV6_ADD + block + '$' ) ) !== -1 ) {
 610                                 return true;
 611                         }
 612
 613                         RE_IPV6_ADD = // contains one "::" in the middle (single '::' check below)
 614                                 '[0-9A-Fa-f]{1,4}' + '(?:::?' + '[0-9A-Fa-f]{1,4}' + '){1,6}';
 615
 616                         return address.search( new RegExp( '^' + RE_IPV6_ADD + block + '$' ) ) !== -1
 617                                 && address.search( /::/ ) !== -1 && address.search( /::.*::/ ) === -1;
 618                 }
 619         };
 620
 621         // Message auto-hide helpers
 622         function hideMessage() {
 623                 $( '#mw-js-message' ).fadeOut( 'slow' );
 624         }
 625         function stopHideMessageTimeout() {
 626                 clearTimeout( hideMessageTimeout );
 627         }
 628         function startHideMessageTimeout() {
 629                 clearTimeout( hideMessageTimeout );
 630                 hideMessageTimeout = setTimeout( hideMessage, 5000 );
 631         }
 632
 633         mw.util = util;
 634
 635 }( mediaWiki, jQuery ) );