resources/mediawiki/mediawiki.util.js

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