resources/src/mediawiki/mediawiki.util.js

   1 ( function ( mw, $ ) {
   2         'use strict';
   3
   4         /**
   5          * Utility library
   6          * @class mw.util
   7          * @singleton
   8          */
   9         var util = {
  10
  11                 /**
  12                  * Initialisation
  13                  * (don't call before document ready)
  14                  */
  15                 init: function () {
  16                         util.$content = ( function () {
  17                                 var i, l, $node, selectors;
  18
  19                                 selectors = [
  20                                         // The preferred standard is class "mw-body".
  21                                         // You may also use class "mw-body mw-body-primary" if you use
  22                                         // mw-body in multiple locations. Or class "mw-body-primary" if
  23                                         // you use mw-body deeper in the DOM.
  24                                         '.mw-body-primary',
  25                                         '.mw-body',
  26
  27                                         // If the skin has no such class, fall back to the parser output
  28                                         '#mw-content-text',
  29
  30                                         // Should never happen... well, it could if someone is not finished writing a
  31                                         // skin and has not yet inserted bodytext yet.
  32                                         'body'
  33                                 ];
  34
  35                                 for ( i = 0, l = selectors.length; i < l; i++ ) {
  36                                         $node = $( selectors[ i ] );
  37                                         if ( $node.length ) {
  38                                                 return $node.first();
  39                                         }
  40                                 }
  41
  42                                 // Preserve existing customized value in case it was preset
  43                                 return util.$content;
  44                         }() );
  45                 },
  46
  47                 /* Main body */
  48
  49                 /**
  50                  * Encode the string like PHP's rawurlencode
  51                  *
  52                  * @param {string} str String to be encoded.
  53                  */
  54                 rawurlencode: function ( str ) {
  55                         str = String( str );
  56                         return encodeURIComponent( str )
  57                                 .replace( /!/g, '%21' ).replace( /'/g, '%27' ).replace( /\(/g, '%28' )
  58                                 .replace( /\)/g, '%29' ).replace( /\*/g, '%2A' ).replace( /~/g, '%7E' );
  59                 },
  60
  61                 /**
  62                  * Encode page titles for use in a URL
  63                  *
  64                  * We want / and : to be included as literal characters in our title URLs
  65                  * as they otherwise fatally break the title.
  66                  *
  67                  * The others are decoded because we can, it's prettier and matches behaviour
  68                  * of `wfUrlencode` in PHP.
  69                  *
  70                  * @param {string} str String to be encoded.
  71                  */
  72                 wikiUrlencode: function ( str ) {
  73                         return util.rawurlencode( str )
  74                                 .replace( /%20/g, '_' )
  75                                 // wfUrlencode replacements
  76                                 .replace( /%3B/g, ';' )
  77                                 .replace( /%40/g, '@' )
  78                                 .replace( /%24/g, '$' )
  79                                 .replace( /%21/g, '!' )
  80                                 .replace( /%2A/g, '*' )
  81                                 .replace( /%28/g, '(' )
  82                                 .replace( /%29/g, ')' )
  83                                 .replace( /%2C/g, ',' )
  84                                 .replace( /%2F/g, '/' )
  85                                 .replace( /%7E/g, '~' )
  86                                 .replace( /%3A/g, ':' );
  87                 },
  88
  89                 /**
  90                  * Get the link to a page name (relative to `wgServer`),
  91                  *
  92                  * @param {string|null} [str=wgPageName] Page name
  93                  * @param {Object} [params] A mapping of query parameter names to values,
  94                  *  e.g. `{ action: 'edit' }`
  95                  * @return {string} Url of the page with name of `str`
  96                  */
  97                 getUrl: function ( str, params ) {
  98                         var url = mw.config.get( 'wgArticlePath' ).replace(
  99                                 '$1',
 100                                 util.wikiUrlencode( typeof str === 'string' ? str : mw.config.get( 'wgPageName' ) )
 101                         );
 102
 103                         if ( params && !$.isEmptyObject( params ) ) {
 104                                 url += ( url.indexOf( '?' ) !== -1 ? '&' : '?' ) + $.param( params );
 105                         }
 106
 107                         return url;
 108                 },
 109
 110                 /**
 111                  * Get address to a script in the wiki root.
 112                  * For index.php use `mw.config.get( 'wgScript' )`.
 113                  *
 114                  * @since 1.18
 115                  * @param {string} str Name of script (e.g. 'api'), defaults to 'index'
 116                  * @return {string} Address to script (e.g. '/w/api.php' )
 117                  */
 118                 wikiScript: function ( str ) {
 119                         str = str || 'index';
 120                         if ( str === 'index' ) {
 121                                 return mw.config.get( 'wgScript' );
 122                         } else if ( str === 'load' ) {
 123                                 return mw.config.get( 'wgLoadScript' );
 124                         } else {
 125                                 return mw.config.get( 'wgScriptPath' ) + '/' + str +
 126                                         mw.config.get( 'wgScriptExtension' );
 127                         }
 128                 },
 129
 130                 /**
 131                  * Append a new style block to the head and return the CSSStyleSheet object.
 132                  * Use .ownerNode to access the `<style>` element, or use mw.loader#addStyleTag.
 133                  * This function returns the styleSheet object for convience (due to cross-browsers
 134                  * difference as to where it is located).
 135                  *
 136                  *     var sheet = mw.util.addCSS( '.foobar { display: none; }' );
 137                  *     $( foo ).click( function () {
 138                  *         // Toggle the sheet on and off
 139                  *         sheet.disabled = !sheet.disabled;
 140                  *     } );
 141                  *
 142                  * @param {string} text CSS to be appended
 143                  * @return {CSSStyleSheet} Use .ownerNode to get to the `<style>` element.
 144                  */
 145                 addCSS: function ( text ) {
 146                         var s = mw.loader.addStyleTag( text );
 147                         return s.sheet || s.styleSheet || s;
 148                 },
 149
 150                 /**
 151                  * Grab the URL parameter value for the given parameter.
 152                  * Returns null if not found.
 153                  *
 154                  * @param {string} param The parameter name.
 155                  * @param {string} [url=location.href] URL to search through, defaulting to the current browsing location.
 156                  * @return {Mixed} Parameter value or null.
 157                  */
 158                 getParamValue: function ( param, url ) {
 159                         if ( url === undefined ) {
 160                                 url = location.href;
 161                         }
 162                         // Get last match, stop at hash
 163                         var     re = new RegExp( '^[^#]*[&?]' + mw.RegExp.escape( param ) + '=([^&#]*)' ),
 164                                 m = re.exec( url );
 165                         if ( m ) {
 166                                 // Beware that decodeURIComponent is not required to understand '+'
 167                                 // by spec, as encodeURIComponent does not produce it.
 168                                 return decodeURIComponent( m[ 1 ].replace( /\+/g, '%20' ) );
 169                         }
 170                         return null;
 171                 },
 172
 173                 /**
 174                  * The content wrapper of the skin (e.g. `.mw-body`).
 175                  *
 176                  * Populated on document ready by #init. To use this property,
 177                  * wait for `$.ready` and be sure to have a module depedendency on
 178                  * `mediawiki.util` and `mediawiki.page.startup` which will ensure
 179                  * your document ready handler fires after #init.
 180                  *
 181                  * Because of the lazy-initialised nature of this property,
 182                  * you're discouraged from using it.
 183                  *
 184                  * If you need just the wikipage content (not any of the
 185                  * extra elements output by the skin), use `$( '#mw-content-text' )`
 186                  * instead. Or listen to mw.hook#wikipage_content which will
 187                  * allow your code to re-run when the page changes (e.g. live preview
 188                  * or re-render after ajax save).
 189                  *
 190                  * @property {jQuery}
 191                  */
 192                 $content: null,
 193
 194                 /**
 195                  * Add a link to a portlet menu on the page, such as:
 196                  *
 197                  * p-cactions (Content actions), p-personal (Personal tools),
 198                  * p-navigation (Navigation), p-tb (Toolbox)
 199                  *
 200                  * The first three parameters are required, the others are optional and
 201                  * may be null. Though providing an id and tooltip is recommended.
 202                  *
 203                  * By default the new link will be added to the end of the list. To
 204                  * add the link before a given existing item, pass the DOM node
 205                  * (e.g. `document.getElementById( 'foobar' )`) or a jQuery-selector
 206                  * (e.g. `'#foobar'`) for that item.
 207                  *
 208                  *     mw.util.addPortletLink(
 209                  *         'p-tb', 'http://mediawiki.org/',
 210                  *         'MediaWiki.org', 't-mworg', 'Go to MediaWiki.org ', 'm', '#t-print'
 211                  *     );
 212                  *
 213                  * @param {string} portlet ID of the target portlet ( 'p-cactions' or 'p-personal' etc.)
 214                  * @param {string} href Link URL
 215                  * @param {string} text Link text
 216                  * @param {string} [id] ID of the new item, should be unique and preferably have
 217                  *  the appropriate prefix ( 'ca-', 'pt-', 'n-' or 't-' )
 218                  * @param {string} [tooltip] Text to show when hovering over the link, without accesskey suffix
 219                  * @param {string} [accesskey] Access key to activate this link (one character, try
 220                  *  to avoid conflicts. Use `$( '[accesskey=x]' ).get()` in the console to
 221                  *  see if 'x' is already used.
 222                  * @param {HTMLElement|jQuery|string} [nextnode] Element or jQuery-selector string to the item that
 223                  *  the new item should be added before, should be another item in the same
 224                  *  list, it will be ignored otherwise
 225                  *
 226                  * @return {HTMLElement|null} The added element (a ListItem or Anchor element,
 227                  * depending on the skin) or null if no element was added to the document.
 228                  */
 229                 addPortletLink: function ( portlet, href, text, id, tooltip, accesskey, nextnode ) {
 230                         var $item, $link, $portlet, $ul;
 231
 232                         // Check if there's at least 3 arguments to prevent a TypeError
 233                         if ( arguments.length < 3 ) {
 234                                 return null;
 235                         }
 236                         // Setup the anchor tag
 237                         $link = $( '<a>' ).attr( 'href', href ).text( text );
 238                         if ( tooltip ) {
 239                                 $link.attr( 'title', tooltip );
 240                         }
 241
 242                         // Select the specified portlet
 243                         $portlet = $( '#' + portlet );
 244                         if ( $portlet.length === 0 ) {
 245                                 return null;
 246                         }
 247                         // Select the first (most likely only) unordered list inside the portlet
 248                         $ul = $portlet.find( 'ul' ).eq( 0 );
 249
 250                         // If it didn't have an unordered list yet, create it
 251                         if ( $ul.length === 0 ) {
 252
 253                                 $ul = $( '<ul>' );
 254
 255                                 // If there's no <div> inside, append it to the portlet directly
 256                                 if ( $portlet.find( 'div:first' ).length === 0 ) {
 257                                         $portlet.append( $ul );
 258                                 } else {
 259                                         // otherwise if there's a div (such as div.body or div.pBody)
 260                                         // append the <ul> to last (most likely only) div
 261                                         $portlet.find( 'div' ).eq( -1 ).append( $ul );
 262                                 }
 263                         }
 264                         // Just in case..
 265                         if ( $ul.length === 0 ) {
 266                                 return null;
 267                         }
 268
 269                         // Unhide portlet if it was hidden before
 270                         $portlet.removeClass( 'emptyPortlet' );
 271
 272                         // Wrap the anchor tag in a list item (and a span if $portlet is a Vector tab)
 273                         // and back up the selector to the list item
 274                         if ( $portlet.hasClass( 'vectorTabs' ) ) {
 275                                 $item = $link.wrap( '<li><span></span></li>' ).parent().parent();
 276                         } else {
 277                                 $item = $link.wrap( '<li></li>' ).parent();
 278                         }
 279
 280                         // Implement the properties passed to the function
 281                         if ( id ) {
 282                                 $item.attr( 'id', id );
 283                         }
 284
 285                         if ( accesskey ) {
 286                                 $link.attr( 'accesskey', accesskey );
 287                         }
 288
 289                         if ( tooltip ) {
 290                                 $link.attr( 'title', tooltip );
 291                         }
 292
 293                         if ( nextnode ) {
 294                                 // Case: nextnode is a DOM element (was the only option before MW 1.17, in wikibits.js)
 295                                 // Case: nextnode is a CSS selector for jQuery
 296                                 if ( nextnode.nodeType || typeof nextnode === 'string' ) {
 297                                         nextnode = $ul.find( nextnode );
 298                                 } else if ( !nextnode.jquery ) {
 299                                         // Error: Invalid nextnode
 300                                         nextnode = undefined;
 301                                 }
 302                                 if ( nextnode && ( nextnode.length !== 1 || nextnode[ 0 ].parentNode !== $ul[ 0 ] ) ) {
 303                                         // Error: nextnode must resolve to a single node
 304                                         // Error: nextnode must have the associated <ul> as its parent
 305                                         nextnode = undefined;
 306                                 }
 307                         }
 308
 309                         // Case: nextnode is a jQuery-wrapped DOM element
 310                         if ( nextnode ) {
 311                                 nextnode.before( $item );
 312                         } else {
 313                                 // Fallback (this is the default behavior)
 314                                 $ul.append( $item );
 315                         }
 316
 317                         // Update tooltip for the access key after inserting into DOM
 318                         // to get a localized access key label (bug 67946).
 319                         $link.updateTooltipAccessKeys();
 320
 321                         return $item[ 0 ];
 322                 },
 323
 324                 /**
 325                  * Validate a string as representing a valid e-mail address
 326                  * according to HTML5 specification. Please note the specification
 327                  * does not validate a domain with one character.
 328                  *
 329                  * FIXME: should be moved to or replaced by a validation module.
 330                  *
 331                  * @param {string} mailtxt E-mail address to be validated.
 332                  * @return {boolean|null} Null if `mailtxt` was an empty string, otherwise true/false
 333                  * as determined by validation.
 334                  */
 335                 validateEmail: function ( mailtxt ) {
 336                         var rfc5322Atext, rfc1034LdhStr, html5EmailRegexp;
 337
 338                         if ( mailtxt === '' ) {
 339                                 return null;
 340                         }
 341
 342                         // HTML5 defines a string as valid e-mail address if it matches
 343                         // the ABNF:
 344                         //     1 * ( atext / "." ) "@" ldh-str 1*( "." ldh-str )
 345                         // With:
 346                         // - atext   : defined in RFC 5322 section 3.2.3
 347                         // - ldh-str : defined in RFC 1034 section 3.5
 348                         //
 349                         // (see STD 68 / RFC 5234 http://tools.ietf.org/html/std68)
 350                         // First, define the RFC 5322 'atext' which is pretty easy:
 351                         // atext = ALPHA / DIGIT / ; Printable US-ASCII
 352                         //     "!" / "#" /    ; characters not including
 353                         //     "$" / "%" /    ; specials. Used for atoms.
 354                         //     "&" / "'" /
 355                         //     "*" / "+" /
 356                         //     "-" / "/" /
 357                         //     "=" / "?" /
 358                         //     "^" / "_" /
 359                         //     "`" / "{" /
 360                         //     "|" / "}" /
 361                         //     "~"
 362                         rfc5322Atext = 'a-z0-9!#$%&\'*+\\-/=?^_`{|}~';
 363
 364                         // Next define the RFC 1034 'ldh-str'
 365                         //     <domain> ::= <subdomain> | " "
 366                         //     <subdomain> ::= <label> | <subdomain> "." <label>
 367                         //     <label> ::= <letter> [ [ <ldh-str> ] <let-dig> ]
 368                         //     <ldh-str> ::= <let-dig-hyp> | <let-dig-hyp> <ldh-str>
 369                         //     <let-dig-hyp> ::= <let-dig> | "-"
 370                         //     <let-dig> ::= <letter> | <digit>
 371                         rfc1034LdhStr = 'a-z0-9\\-';
 372
 373                         html5EmailRegexp = new RegExp(
 374                                 // start of string
 375                                 '^'
 376                                 +
 377                                 // User part which is liberal :p
 378                                 '[' + rfc5322Atext + '\\.]+'
 379                                 +
 380                                 // 'at'
 381                                 '@'
 382                                 +
 383                                 // Domain first part
 384                                 '[' + rfc1034LdhStr + ']+'
 385                                 +
 386                                 // Optional second part and following are separated by a dot
 387                                 '(?:\\.[' + rfc1034LdhStr + ']+)*'
 388                                 +
 389                                 // End of string
 390                                 '$',
 391                                 // RegExp is case insensitive
 392                                 'i'
 393                         );
 394                         return ( mailtxt.match( html5EmailRegexp ) !== null );
 395                 },
 396
 397                 /**
 398                  * Note: borrows from IP::isIPv4
 399                  *
 400                  * @param {string} address
 401                  * @param {boolean} allowBlock
 402                  * @return {boolean}
 403                  */
 404                 isIPv4Address: function ( address, allowBlock ) {
 405                         if ( typeof address !== 'string' ) {
 406                                 return false;
 407                         }
 408
 409                         var     block = allowBlock ? '(?:\\/(?:3[0-2]|[12]?\\d))?' : '',
 410                                 RE_IP_BYTE = '(?:25[0-5]|2[0-4][0-9]|1[0-9][0-9]|0?[0-9]?[0-9])',
 411                                 RE_IP_ADD = '(?:' + RE_IP_BYTE + '\\.){3}' + RE_IP_BYTE;
 412
 413                         return address.search( new RegExp( '^' + RE_IP_ADD + block + '$' ) ) !== -1;
 414                 },
 415
 416                 /**
 417                  * Note: borrows from IP::isIPv6
 418                  *
 419                  * @param {string} address
 420                  * @param {boolean} allowBlock
 421                  * @return {boolean}
 422                  */
 423                 isIPv6Address: function ( address, allowBlock ) {
 424                         if ( typeof address !== 'string' ) {
 425                                 return false;
 426                         }
 427
 428                         var     block = allowBlock ? '(?:\\/(?:12[0-8]|1[01][0-9]|[1-9]?\\d))?' : '',
 429                                 RE_IPV6_ADD =
 430                         '(?:' + // starts with "::" (including "::")
 431                         ':(?::|(?::' + '[0-9A-Fa-f]{1,4}' + '){1,7})' +
 432                         '|' + // ends with "::" (except "::")
 433                         '[0-9A-Fa-f]{1,4}' + '(?::' + '[0-9A-Fa-f]{1,4}' + '){0,6}::' +
 434                         '|' + // contains no "::"
 435                         '[0-9A-Fa-f]{1,4}' + '(?::' + '[0-9A-Fa-f]{1,4}' + '){7}' +
 436                         ')';
 437
 438                         if ( address.search( new RegExp( '^' + RE_IPV6_ADD + block + '$' ) ) !== -1 ) {
 439                                 return true;
 440                         }
 441
 442                         RE_IPV6_ADD = // contains one "::" in the middle (single '::' check below)
 443                                 '[0-9A-Fa-f]{1,4}' + '(?:::?' + '[0-9A-Fa-f]{1,4}' + '){1,6}';
 444
 445                         return address.search( new RegExp( '^' + RE_IPV6_ADD + block + '$' ) ) !== -1
 446                                 && address.search( /::/ ) !== -1 && address.search( /::.*::/ ) === -1;
 447                 },
 448
 449                 /**
 450                  * Check whether a string is an IP address
 451                  *
 452                  * @since 1.25
 453                  * @param {string} address String to check
 454                  * @param {boolean} allowBlock True if a block of IPs should be allowed
 455                  * @return {boolean}
 456                  */
 457                 isIPAddress: function ( address, allowBlock ) {
 458                         return util.isIPv4Address( address, allowBlock ) ||
 459                                 util.isIPv6Address( address, allowBlock );
 460                 }
 461         };
 462
 463         /**
 464          * @method wikiGetlink
 465          * @inheritdoc #getUrl
 466          * @deprecated since 1.23 Use #getUrl instead.
 467          */
 468         mw.log.deprecate( util, 'wikiGetlink', util.getUrl, 'Use mw.util.getUrl instead.' );
 469
 470         /**
 471          * Access key prefix. Might be wrong for browsers implementing the accessKeyLabel property.
 472          * @property {string} tooltipAccessKeyPrefix
 473          * @deprecated since 1.24 Use the module jquery.accessKeyLabel instead.
 474          */
 475         mw.log.deprecate( util, 'tooltipAccessKeyPrefix', $.fn.updateTooltipAccessKeys.getAccessKeyPrefix(), 'Use jquery.accessKeyLabel instead.' );
 476
 477         /**
 478          * Regex to match accesskey tooltips.
 479          *
 480          * Should match:
 481          *
 482          * - "[ctrl-option-x]"
 483          * - "[alt-shift-x]"
 484          * - "[ctrl-alt-x]"
 485          * - "[ctrl-x]"
 486          *
 487          * The accesskey is matched in group $6.
 488          *
 489          * Will probably not work for browsers implementing the accessKeyLabel property.
 490          *
 491          * @property {RegExp} tooltipAccessKeyRegexp
 492          * @deprecated since 1.24 Use the module jquery.accessKeyLabel instead.
 493          */
 494         mw.log.deprecate( util, 'tooltipAccessKeyRegexp', /\[(ctrl-)?(option-)?(alt-)?(shift-)?(esc-)?(.)\]$/, 'Use jquery.accessKeyLabel instead.' );
 495
 496         /**
 497          * Add the appropriate prefix to the accesskey shown in the tooltip.
 498          *
 499          * If the `$nodes` parameter is given, only those nodes are updated;
 500          * otherwise, depending on browser support, we update either all elements
 501          * with accesskeys on the page or a bunch of elements which are likely to
 502          * have them on core skins.
 503          *
 504          * @method updateTooltipAccessKeys
 505          * @param {Array|jQuery} [$nodes] A jQuery object, or array of nodes to update.
 506          * @deprecated since 1.24 Use the module jquery.accessKeyLabel instead.
 507          */
 508         mw.log.deprecate( util, 'updateTooltipAccessKeys', function ( $nodes ) {
 509                 if ( !$nodes ) {
 510                         if ( document.querySelectorAll ) {
 511                                 // If we're running on a browser where we can do this efficiently,
 512                                 // just find all elements that have accesskeys. We can't use jQuery's
 513                                 // polyfill for the selector since looping over all elements on page
 514                                 // load might be too slow.
 515                                 $nodes = $( document.querySelectorAll( '[accesskey]' ) );
 516                         } else {
 517                                 // Otherwise go through some elements likely to have accesskeys rather
 518                                 // than looping over all of them. Unfortunately this will not fully
 519                                 // work for custom skins with different HTML structures. Input, label
 520                                 // and button should be rare enough that no optimizations are needed.
 521                                 $nodes = $( '#column-one a, #mw-head a, #mw-panel a, #p-logo a, input, label, button' );
 522                         }
 523                 } else if ( !( $nodes instanceof $ ) ) {
 524                         $nodes = $( $nodes );
 525                 }
 526
 527                 $nodes.updateTooltipAccessKeys();
 528         }, 'Use jquery.accessKeyLabel instead.' );
 529
 530         /**
 531          * Add a little box at the top of the screen to inform the user of
 532          * something, replacing any previous message.
 533          * Calling with no arguments, with an empty string or null will hide the message
 534          *
 535          * @method jsMessage
 536          * @deprecated since 1.20 Use mw#notify
 537          * @param {Mixed} message The DOM-element, jQuery object or HTML-string to be put inside the message box.
 538          *  to allow CSS/JS to hide different boxes. null = no class used.
 539          */
 540         mw.log.deprecate( util, 'jsMessage', function ( message ) {
 541                 if ( !arguments.length || message === '' || message === null ) {
 542                         return true;
 543                 }
 544                 if ( typeof message !== 'object' ) {
 545                         message = $.parseHTML( message );
 546                 }
 547                 mw.notify( message, { autoHide: true, tag: 'legacy' } );
 548                 return true;
 549         }, 'Use mw.notify instead.' );
 550
 551         mw.util = util;
 552
 553 }( mediaWiki, jQuery ) );