resources/src/mediawiki.util.js

   1 ( function () {
   2         'use strict';
   3
   4         var util,
   5                 config = require( './config.json' ),
   6                 origConfig = config;
   7
   8         /**
   9          * Encode the string like PHP's rawurlencode
  10          * @ignore
  11          *
  12          * @param {string} str String to be encoded.
  13          * @return {string} Encoded string
  14          */
  15         function rawurlencode( str ) {
  16                 str = String( str );
  17                 return encodeURIComponent( str )
  18                         .replace( /!/g, '%21' ).replace( /'/g, '%27' ).replace( /\(/g, '%28' )
  19                         .replace( /\)/g, '%29' ).replace( /\*/g, '%2A' ).replace( /~/g, '%7E' );
  20         }
  21
  22         /**
  23          * Private helper function used by util.escapeId*()
  24          * @ignore
  25          *
  26          * @param {string} str String to be encoded
  27          * @param {string} mode Encoding mode, see documentation for $wgFragmentMode
  28          *     in DefaultSettings.php
  29          * @return {string} Encoded string
  30          */
  31         function escapeIdInternal( str, mode ) {
  32                 str = String( str );
  33
  34                 switch ( mode ) {
  35                         case 'html5':
  36                                 return str.replace( / /g, '_' );
  37                         case 'legacy':
  38                                 return rawurlencode( str.replace( / /g, '_' ) )
  39                                         .replace( /%3A/g, ':' )
  40                                         .replace( /%/g, '.' );
  41                         default:
  42                                 throw new Error( 'Unrecognized ID escaping mode ' + mode );
  43                 }
  44         }
  45
  46         /**
  47          * Utility library
  48          * @class mw.util
  49          * @singleton
  50          */
  51         util = {
  52
  53                 /* Main body */
  54
  55                 setOptionsForTest: function ( opts ) {
  56                         if ( !window.QUnit ) {
  57                                 throw new Error( 'Modifying options not allowed outside unit tests' );
  58                         }
  59                         config = $.extend( {}, config, opts );
  60                 },
  61
  62                 resetOptionsForTest: function () {
  63                         if ( !window.QUnit ) {
  64                                 throw new Error( 'Resetting options not allowed outside unit tests' );
  65                         }
  66                         config = origConfig;
  67                 },
  68
  69                 /**
  70                  * Encode the string like PHP's rawurlencode
  71                  *
  72                  * @param {string} str String to be encoded.
  73                  * @return {string} Encoded string
  74                  */
  75                 rawurlencode: rawurlencode,
  76
  77                 /**
  78                  * Encode string into HTML id compatible form suitable for use in HTML
  79                  * Analog to PHP Sanitizer::escapeIdForAttribute()
  80                  *
  81                  * @since 1.30
  82                  *
  83                  * @param {string} str String to encode
  84                  * @return {string} Encoded string
  85                  */
  86                 escapeIdForAttribute: function ( str ) {
  87                         var mode = config.FragmentMode[ 0 ];
  88
  89                         return escapeIdInternal( str, mode );
  90                 },
  91
  92                 /**
  93                  * Encode string into HTML id compatible form suitable for use in links
  94                  * Analog to PHP Sanitizer::escapeIdForLink()
  95                  *
  96                  * @since 1.30
  97                  *
  98                  * @param {string} str String to encode
  99                  * @return {string} Encoded string
 100                  */
 101                 escapeIdForLink: function ( str ) {
 102                         var mode = config.FragmentMode[ 0 ];
 103
 104                         return escapeIdInternal( str, mode );
 105                 },
 106
 107                 /**
 108                  * Encode page titles for use in a URL
 109                  *
 110                  * We want / and : to be included as literal characters in our title URLs
 111                  * as they otherwise fatally break the title.
 112                  *
 113                  * The others are decoded because we can, it's prettier and matches behaviour
 114                  * of `wfUrlencode` in PHP.
 115                  *
 116                  * @param {string} str String to be encoded.
 117                  * @return {string} Encoded string
 118                  */
 119                 wikiUrlencode: function ( str ) {
 120                         return util.rawurlencode( str )
 121                                 .replace( /%20/g, '_' )
 122                                 // wfUrlencode replacements
 123                                 .replace( /%3B/g, ';' )
 124                                 .replace( /%40/g, '@' )
 125                                 .replace( /%24/g, '$' )
 126                                 .replace( /%21/g, '!' )
 127                                 .replace( /%2A/g, '*' )
 128                                 .replace( /%28/g, '(' )
 129                                 .replace( /%29/g, ')' )
 130                                 .replace( /%2C/g, ',' )
 131                                 .replace( /%2F/g, '/' )
 132                                 .replace( /%7E/g, '~' )
 133                                 .replace( /%3A/g, ':' );
 134                 },
 135
 136                 /**
 137                  * Get the link to a page name (relative to `wgServer`),
 138                  *
 139                  * @param {string|null} [pageName=wgPageName] Page name
 140                  * @param {Object} [params] A mapping of query parameter names to values,
 141                  *  e.g. `{ action: 'edit' }`
 142                  * @return {string} Url of the page with name of `pageName`
 143                  */
 144                 getUrl: function ( pageName, params ) {
 145                         var titleFragmentStart, url, query,
 146                                 fragment = '',
 147                                 title = typeof pageName === 'string' ? pageName : mw.config.get( 'wgPageName' );
 148
 149                         // Find any fragment
 150                         titleFragmentStart = title.indexOf( '#' );
 151                         if ( titleFragmentStart !== -1 ) {
 152                                 fragment = title.slice( titleFragmentStart + 1 );
 153                                 // Exclude the fragment from the page name
 154                                 title = title.slice( 0, titleFragmentStart );
 155                         }
 156
 157                         // Produce query string
 158                         if ( params ) {
 159                                 query = $.param( params );
 160                         }
 161                         if ( query ) {
 162                                 url = title ?
 163                                         util.wikiScript() + '?title=' + util.wikiUrlencode( title ) + '&' + query :
 164                                         util.wikiScript() + '?' + query;
 165                         } else {
 166                                 url = mw.config.get( 'wgArticlePath' )
 167                                         .replace( '$1', util.wikiUrlencode( title ).replace( /\$/g, '$$$$' ) );
 168                         }
 169
 170                         // Append the encoded fragment
 171                         if ( fragment.length ) {
 172                                 url += '#' + util.escapeIdForLink( fragment );
 173                         }
 174
 175                         return url;
 176                 },
 177
 178                 /**
 179                  * Get address to a script in the wiki root.
 180                  * For index.php use `mw.config.get( 'wgScript' )`.
 181                  *
 182                  * @since 1.18
 183                  * @param {string} str Name of script (e.g. 'api'), defaults to 'index'
 184                  * @return {string} Address to script (e.g. '/w/api.php' )
 185                  */
 186                 wikiScript: function ( str ) {
 187                         str = str || 'index';
 188                         if ( str === 'index' ) {
 189                                 return mw.config.get( 'wgScript' );
 190                         } else if ( str === 'load' ) {
 191                                 return mw.config.get( 'wgLoadScript' );
 192                         } else {
 193                                 return mw.config.get( 'wgScriptPath' ) + '/' + str + '.php';
 194                         }
 195                 },
 196
 197                 /**
 198                  * Append a new style block to the head and return the CSSStyleSheet object.
 199                  * Use .ownerNode to access the `<style>` element, or use mw.loader#addStyleTag.
 200                  * This function returns the styleSheet object for convience (due to cross-browsers
 201                  * difference as to where it is located).
 202                  *
 203                  *     var sheet = util.addCSS( '.foobar { display: none; }' );
 204                  *     $( foo ).click( function () {
 205                  *         // Toggle the sheet on and off
 206                  *         sheet.disabled = !sheet.disabled;
 207                  *     } );
 208                  *
 209                  * @param {string} text CSS to be appended
 210                  * @return {CSSStyleSheet} Use .ownerNode to get to the `<style>` element.
 211                  */
 212                 addCSS: function ( text ) {
 213                         var s = mw.loader.addStyleTag( text );
 214                         return s.sheet || s.styleSheet || s;
 215                 },
 216
 217                 /**
 218                  * Grab the URL parameter value for the given parameter.
 219                  * Returns null if not found.
 220                  *
 221                  * @param {string} param The parameter name.
 222                  * @param {string} [url=location.href] URL to search through, defaulting to the current browsing location.
 223                  * @return {Mixed} Parameter value or null.
 224                  */
 225                 getParamValue: function ( param, url ) {
 226                         // Get last match, stop at hash
 227                         var re = new RegExp( '^[^#]*[&?]' + mw.RegExp.escape( param ) + '=([^&#]*)' ),
 228                                 m = re.exec( url !== undefined ? url : location.href );
 229
 230                         if ( m ) {
 231                                 // Beware that decodeURIComponent is not required to understand '+'
 232                                 // by spec, as encodeURIComponent does not produce it.
 233                                 return decodeURIComponent( m[ 1 ].replace( /\+/g, '%20' ) );
 234                         }
 235                         return null;
 236                 },
 237
 238                 /**
 239                  * The content wrapper of the skin (e.g. `.mw-body`).
 240                  *
 241                  * Populated on document ready. To use this property,
 242                  * wait for `$.ready` and be sure to have a module dependency on
 243                  * `mediawiki.util` which will ensure
 244                  * your document ready handler fires after initialization.
 245                  *
 246                  * Because of the lazy-initialised nature of this property,
 247                  * you're discouraged from using it.
 248                  *
 249                  * If you need just the wikipage content (not any of the
 250                  * extra elements output by the skin), use `$( '#mw-content-text' )`
 251                  * instead. Or listen to mw.hook#wikipage_content which will
 252                  * allow your code to re-run when the page changes (e.g. live preview
 253                  * or re-render after ajax save).
 254                  *
 255                  * @property {jQuery}
 256                  */
 257                 $content: null,
 258
 259                 /**
 260                  * Add a link to a portlet menu on the page, such as:
 261                  *
 262                  * p-cactions (Content actions), p-personal (Personal tools),
 263                  * p-navigation (Navigation), p-tb (Toolbox)
 264                  *
 265                  * The first three parameters are required, the others are optional and
 266                  * may be null. Though providing an id and tooltip is recommended.
 267                  *
 268                  * By default the new link will be added to the end of the list. To
 269                  * add the link before a given existing item, pass the DOM node
 270                  * (e.g. `document.getElementById( 'foobar' )`) or a jQuery-selector
 271                  * (e.g. `'#foobar'`) for that item.
 272                  *
 273                  *     util.addPortletLink(
 274                  *         'p-tb', 'https://www.mediawiki.org/',
 275                  *         'mediawiki.org', 't-mworg', 'Go to mediawiki.org', 'm', '#t-print'
 276                  *     );
 277                  *
 278                  *     var node = util.addPortletLink(
 279                  *         'p-tb',
 280                  *         new mw.Title( 'Special:Example' ).getUrl(),
 281                  *         'Example'
 282                  *     );
 283                  *     $( node ).on( 'click', function ( e ) {
 284                  *         console.log( 'Example' );
 285                  *         e.preventDefault();
 286                  *     } );
 287                  *
 288                  * @param {string} portletId ID of the target portlet (e.g. 'p-cactions' or 'p-personal')
 289                  * @param {string} href Link URL
 290                  * @param {string} text Link text
 291                  * @param {string} [id] ID of the list item, should be unique and preferably have
 292                  *  the appropriate prefix ('ca-', 'pt-', 'n-' or 't-')
 293                  * @param {string} [tooltip] Text to show when hovering over the link, without accesskey suffix
 294                  * @param {string} [accesskey] Access key to activate this link. One character only,
 295                  *  avoid conflicts with other links. Use `$( '[accesskey=x]' )` in the console to
 296                  *  see if 'x' is already used.
 297                  * @param {HTMLElement|jQuery|string} [nextnode] Element that the new item should be added before.
 298                  *  Must be another item in the same list, it will be ignored otherwise.
 299                  *  Can be specified as DOM reference, as jQuery object, or as CSS selector string.
 300                  * @return {HTMLElement|null} The added list item, or null if no element was added.
 301                  */
 302                 addPortletLink: function ( portletId, href, text, id, tooltip, accesskey, nextnode ) {
 303                         var item, link, $portlet, portlet, portletDiv, ul, next;
 304
 305                         if ( !portletId ) {
 306                                 // Avoid confusing id="undefined" lookup
 307                                 return null;
 308                         }
 309
 310                         portlet = document.getElementById( portletId );
 311                         if ( !portlet ) {
 312                                 // Invalid portlet ID
 313                                 return null;
 314                         }
 315
 316                         // Setup the anchor tag and set any the properties
 317                         link = document.createElement( 'a' );
 318                         link.href = href;
 319                         link.textContent = text;
 320                         if ( tooltip ) {
 321                                 link.title = tooltip;
 322                         }
 323                         if ( accesskey ) {
 324                                 link.accessKey = accesskey;
 325                         }
 326
 327                         // Unhide portlet if it was hidden before
 328                         $portlet = $( portlet );
 329                         $portlet.removeClass( 'emptyPortlet' );
 330
 331                         // Setup the list item (and a span if $portlet is a Vector tab)
 332                         if ( $portlet.hasClass( 'vectorTabs' ) ) {
 333                                 item = $( '<li>' ).append( $( '<span>' ).append( link )[ 0 ] )[ 0 ];
 334                         } else {
 335                                 item = $( '<li>' ).append( link )[ 0 ];
 336                         }
 337                         if ( id ) {
 338                                 item.id = id;
 339                         }
 340
 341                         // Select the first (most likely only) unordered list inside the portlet
 342                         ul = portlet.querySelector( 'ul' );
 343                         if ( !ul ) {
 344                                 // If it didn't have an unordered list yet, create one
 345                                 ul = document.createElement( 'ul' );
 346                                 portletDiv = portlet.querySelector( 'div' );
 347                                 if ( portletDiv ) {
 348                                         // Support: Legacy skins have a div (such as div.body or div.pBody).
 349                                         // Append the <ul> to that.
 350                                         portletDiv.appendChild( ul );
 351                                 } else {
 352                                         // Append it to the portlet directly
 353                                         portlet.appendChild( ul );
 354                                 }
 355                         }
 356
 357                         if ( nextnode && ( typeof nextnode === 'string' || nextnode.nodeType || nextnode.jquery ) ) {
 358                                 nextnode = $( ul ).find( nextnode );
 359                                 if ( nextnode.length === 1 && nextnode[ 0 ].parentNode === ul ) {
 360                                         // Insertion point: Before nextnode
 361                                         nextnode.before( item );
 362                                         next = true;
 363                                 }
 364                                 // Else: Invalid nextnode value (no match, more than one match, or not a direct child)
 365                                 // Else: Invalid nextnode type
 366                         }
 367
 368                         if ( !next ) {
 369                                 // Insertion point: End of list (default)
 370                                 ul.appendChild( item );
 371                         }
 372
 373                         // Update tooltip for the access key after inserting into DOM
 374                         // to get a localized access key label (T69946).
 375                         if ( accesskey ) {
 376                                 $( link ).updateTooltipAccessKeys();
 377                         }
 378
 379                         return item;
 380                 },
 381
 382                 /**
 383                  * Validate a string as representing a valid e-mail address
 384                  * according to HTML5 specification. Please note the specification
 385                  * does not validate a domain with one character.
 386                  *
 387                  * FIXME: should be moved to or replaced by a validation module.
 388                  *
 389                  * @param {string} mailtxt E-mail address to be validated.
 390                  * @return {boolean|null} Null if `mailtxt` was an empty string, otherwise true/false
 391                  * as determined by validation.
 392                  */
 393                 validateEmail: function ( mailtxt ) {
 394                         var rfc5322Atext, rfc1034LdhStr, html5EmailRegexp;
 395
 396                         if ( mailtxt === '' ) {
 397                                 return null;
 398                         }
 399
 400                         // HTML5 defines a string as valid e-mail address if it matches
 401                         // the ABNF:
 402                         //     1 * ( atext / "." ) "@" ldh-str 1*( "." ldh-str )
 403                         // With:
 404                         // - atext   : defined in RFC 5322 section 3.2.3
 405                         // - ldh-str : defined in RFC 1034 section 3.5
 406                         //
 407                         // (see STD 68 / RFC 5234 https://tools.ietf.org/html/std68)
 408                         // First, define the RFC 5322 'atext' which is pretty easy:
 409                         // atext = ALPHA / DIGIT / ; Printable US-ASCII
 410                         //     "!" / "#" /    ; characters not including
 411                         //     "$" / "%" /    ; specials. Used for atoms.
 412                         //     "&" / "'" /
 413                         //     "*" / "+" /
 414                         //     "-" / "/" /
 415                         //     "=" / "?" /
 416                         //     "^" / "_" /
 417                         //     "`" / "{" /
 418                         //     "|" / "}" /
 419                         //     "~"
 420                         rfc5322Atext = 'a-z0-9!#$%&\'*+\\-/=?^_`{|}~';
 421
 422                         // Next define the RFC 1034 'ldh-str'
 423                         //     <domain> ::= <subdomain> | " "
 424                         //     <subdomain> ::= <label> | <subdomain> "." <label>
 425                         //     <label> ::= <letter> [ [ <ldh-str> ] <let-dig> ]
 426                         //     <ldh-str> ::= <let-dig-hyp> | <let-dig-hyp> <ldh-str>
 427                         //     <let-dig-hyp> ::= <let-dig> | "-"
 428                         //     <let-dig> ::= <letter> | <digit>
 429                         rfc1034LdhStr = 'a-z0-9\\-';
 430
 431                         html5EmailRegexp = new RegExp(
 432                                 // start of string
 433                                 '^' +
 434                                 // User part which is liberal :p
 435                                 '[' + rfc5322Atext + '\\.]+' +
 436                                 // 'at'
 437                                 '@' +
 438                                 // Domain first part
 439                                 '[' + rfc1034LdhStr + ']+' +
 440                                 // Optional second part and following are separated by a dot
 441                                 '(?:\\.[' + rfc1034LdhStr + ']+)*' +
 442                                 // End of string
 443                                 '$',
 444                                 // RegExp is case insensitive
 445                                 'i'
 446                         );
 447                         return ( mailtxt.match( html5EmailRegexp ) !== null );
 448                 },
 449
 450                 /**
 451                  * Note: borrows from IP::isIPv4
 452                  *
 453                  * @param {string} address
 454                  * @param {boolean} [allowBlock=false]
 455                  * @return {boolean}
 456                  */
 457                 isIPv4Address: function ( address, allowBlock ) {
 458                         var block, RE_IP_BYTE, RE_IP_ADD;
 459
 460                         if ( typeof address !== 'string' ) {
 461                                 return false;
 462                         }
 463
 464                         block = allowBlock ? '(?:\\/(?:3[0-2]|[12]?\\d))?' : '';
 465                         RE_IP_BYTE = '(?:25[0-5]|2[0-4][0-9]|1[0-9][0-9]|0?[0-9]?[0-9])';
 466                         RE_IP_ADD = '(?:' + RE_IP_BYTE + '\\.){3}' + RE_IP_BYTE;
 467
 468                         return ( new RegExp( '^' + RE_IP_ADD + block + '$' ).test( address ) );
 469                 },
 470
 471                 /**
 472                  * Note: borrows from IP::isIPv6
 473                  *
 474                  * @param {string} address
 475                  * @param {boolean} [allowBlock=false]
 476                  * @return {boolean}
 477                  */
 478                 isIPv6Address: function ( address, allowBlock ) {
 479                         var block, RE_IPV6_ADD;
 480
 481                         if ( typeof address !== 'string' ) {
 482                                 return false;
 483                         }
 484
 485                         block = allowBlock ? '(?:\\/(?:12[0-8]|1[01][0-9]|[1-9]?\\d))?' : '';
 486                         RE_IPV6_ADD =
 487                                 '(?:' + // starts with "::" (including "::")
 488                                         ':(?::|(?::' +
 489                                                 '[0-9A-Fa-f]{1,4}' +
 490                                         '){1,7})' +
 491                                         '|' + // ends with "::" (except "::")
 492                                         '[0-9A-Fa-f]{1,4}' +
 493                                         '(?::' +
 494                                                 '[0-9A-Fa-f]{1,4}' +
 495                                         '){0,6}::' +
 496                                         '|' + // contains no "::"
 497                                         '[0-9A-Fa-f]{1,4}' +
 498                                         '(?::' +
 499                                                 '[0-9A-Fa-f]{1,4}' +
 500                                         '){7}' +
 501                                 ')';
 502
 503                         if ( new RegExp( '^' + RE_IPV6_ADD + block + '$' ).test( address ) ) {
 504                                 return true;
 505                         }
 506
 507                         // contains one "::" in the middle (single '::' check below)
 508                         RE_IPV6_ADD =
 509                                 '[0-9A-Fa-f]{1,4}' +
 510                                 '(?:::?' +
 511                                         '[0-9A-Fa-f]{1,4}' +
 512                                 '){1,6}';
 513
 514                         return (
 515                                 new RegExp( '^' + RE_IPV6_ADD + block + '$' ).test( address ) &&
 516                                 /::/.test( address ) &&
 517                                 !/::.*::/.test( address )
 518                         );
 519                 },
 520
 521                 /**
 522                  * Check whether a string is an IP address
 523                  *
 524                  * @since 1.25
 525                  * @param {string} address String to check
 526                  * @param {boolean} [allowBlock=false] If a block of IPs should be allowed
 527                  * @return {boolean}
 528                  */
 529                 isIPAddress: function ( address, allowBlock ) {
 530                         return util.isIPv4Address( address, allowBlock ) ||
 531                                 util.isIPv6Address( address, allowBlock );
 532                 }
 533         };
 534
 535         /**
 536          * Initialisation of mw.util.$content
 537          */
 538         function init() {
 539                 util.$content = ( function () {
 540                         var i, l, $node, selectors;
 541
 542                         selectors = [
 543                                 // The preferred standard is class "mw-body".
 544                                 // You may also use class "mw-body mw-body-primary" if you use
 545                                 // mw-body in multiple locations. Or class "mw-body-primary" if
 546                                 // you use mw-body deeper in the DOM.
 547                                 '.mw-body-primary',
 548                                 '.mw-body',
 549
 550                                 // If the skin has no such class, fall back to the parser output
 551                                 '#mw-content-text'
 552                         ];
 553
 554                         for ( i = 0, l = selectors.length; i < l; i++ ) {
 555                                 $node = $( selectors[ i ] );
 556                                 if ( $node.length ) {
 557                                         return $node.first();
 558                                 }
 559                         }
 560
 561                         // Should never happen... well, it could if someone is not finished writing a
 562                         // skin and has not yet inserted bodytext yet.
 563                         return $( 'body' );
 564                 }() );
 565         }
 566
 567         $( init );
 568
 569         mw.util = util;
 570         module.exports = util;
 571
 572 }() );