resources/src/mediawiki.widgets.datetime/ProlepticGregorianDateTimeFormatter.js

   1 ( function ( $, mw ) {
   2
   3         /**
   4          * Provides various methods needed for formatting dates and times. This
   5          * implementation implments the proleptic Gregorian calendar over years
   6          * 0000–9999.
   7          *
   8          * @class
   9          * @extends mw.widgets.datetime.DateTimeFormatter
  10          *
  11          * @constructor
  12          * @param {Object} [config] Configuration options
  13          * @cfg {Object} [fullMonthNames] Mapping 1–12 to full month names.
  14          * @cfg {Object} [shortMonthNames] Mapping 1–12 to abbreviated month names.
  15          *  If {@link #fullMonthNames fullMonthNames} is given and this is not,
  16          *  defaults to the first three characters from that setting.
  17          * @cfg {Object} [fullDayNames] Mapping 0–6 to full day of week names. 0 is Sunday, 6 is Saturday.
  18          * @cfg {Object} [shortDayNames] Mapping 0–6 to abbreviated day of week names. 0 is Sunday, 6 is Saturday.
  19          *  If {@link #fullDayNames fullDayNames} is given and this is not, defaults to
  20          *  the first three characters from that setting.
  21          * @cfg {string[]} [dayLetters] Weekday column headers for a calendar. Array of 7 strings.
  22          *  If {@link #fullDayNames fullDayNames} or {@link #shortDayNames shortDayNames}
  23          *  are given and this is not, defaults to the first character from
  24          *  shortDayNames.
  25          * @cfg {string[]} [hour12Periods] AM and PM texts. Array of 2 strings, AM and PM.
  26          * @cfg {number} [weekStartsOn=0] What day the week starts on: 0 is Sunday, 1 is Monday, 6 is Saturday.
  27          */
  28         mw.widgets.datetime.ProlepticGregorianDateTimeFormatter = function MwWidgetsDatetimeProlepticGregorianDateTimeFormatter( config ) {
  29                 this.constructor.static.setupDefaults();
  30
  31                 config = $.extend( {
  32                         weekStartsOn: 0,
  33                         hour12Periods: this.constructor.static.hour12Periods
  34                 }, config );
  35
  36                 if ( config.fullMonthNames && !config.shortMonthNames ) {
  37                         config.shortMonthNames = {};
  38                         $.each( config.fullMonthNames, function ( k, v ) {
  39                                 config.shortMonthNames[ k ] = v.substr( 0, 3 );
  40                         }.bind( this ) );
  41                 }
  42                 if ( config.shortDayNames && !config.dayLetters ) {
  43                         config.dayLetters = [];
  44                         $.each( config.shortDayNames, function ( k, v ) {
  45                                 config.dayLetters[ k ] = v.substr( 0, 1 );
  46                         }.bind( this ) );
  47                 }
  48                 if ( config.fullDayNames && !config.dayLetters ) {
  49                         config.dayLetters = [];
  50                         $.each( config.fullDayNames, function ( k, v ) {
  51                                 config.dayLetters[ k ] = v.substr( 0, 1 );
  52                         }.bind( this ) );
  53                 }
  54                 if ( config.fullDayNames && !config.shortDayNames ) {
  55                         config.shortDayNames = {};
  56                         $.each( config.fullDayNames, function ( k, v ) {
  57                                 config.shortDayNames[ k ] = v.substr( 0, 3 );
  58                         }.bind( this ) );
  59                 }
  60                 config = $.extend( {
  61                         fullMonthNames: this.constructor.static.fullMonthNames,
  62                         shortMonthNames: this.constructor.static.shortMonthNames,
  63                         fullDayNames: this.constructor.static.fullDayNames,
  64                         shortDayNames: this.constructor.static.shortDayNames,
  65                         dayLetters: this.constructor.static.dayLetters
  66                 }, config );
  67
  68                 // Parent constructor
  69                 mw.widgets.datetime.ProlepticGregorianDateTimeFormatter[ 'super' ].call( this, config );
  70
  71                 // Properties
  72                 this.weekStartsOn = config.weekStartsOn % 7;
  73                 this.fullMonthNames = config.fullMonthNames;
  74                 this.shortMonthNames = config.shortMonthNames;
  75                 this.fullDayNames = config.fullDayNames;
  76                 this.shortDayNames = config.shortDayNames;
  77                 this.dayLetters = config.dayLetters;
  78                 this.hour12Periods = config.hour12Periods;
  79         };
  80
  81         /* Setup */
  82
  83         OO.inheritClass( mw.widgets.datetime.ProlepticGregorianDateTimeFormatter, mw.widgets.datetime.DateTimeFormatter );
  84
  85         /* Static */
  86
  87         /**
  88          * @inheritdoc
  89          */
  90         mw.widgets.datetime.ProlepticGregorianDateTimeFormatter.static.formats = {
  91                 '@time': '${hour|0}:${minute|0}:${second|0}',
  92                 '@date': '$!{dow|short} ${day|#} ${month|short} ${year|#}',
  93                 '@datetime': '$!{dow|short} ${day|#} ${month|short} ${year|#} ${hour|0}:${minute|0}:${second|0} $!{zone|short}',
  94                 '@default': '$!{dow|short} ${day|#} ${month|short} ${year|#} ${hour|0}:${minute|0}:${second|0} $!{zone|short}'
  95         };
  96
  97         /**
  98          * Default full month names.
  99          *
 100          * @static
 101          * @inheritable
 102          * @property {Object}
 103          */
 104         mw.widgets.datetime.ProlepticGregorianDateTimeFormatter.static.fullMonthNames = null;
 105
 106         /**
 107          * Default abbreviated month names.
 108          *
 109          * @static
 110          * @inheritable
 111          * @property {Object}
 112          */
 113         mw.widgets.datetime.ProlepticGregorianDateTimeFormatter.static.shortMonthNames = null;
 114
 115         /**
 116          * Default full day of week names.
 117          *
 118          * @static
 119          * @inheritable
 120          * @property {Object}
 121          */
 122         mw.widgets.datetime.ProlepticGregorianDateTimeFormatter.static.fullDayNames = null;
 123
 124         /**
 125          * Default abbreviated day of week names.
 126          *
 127          * @static
 128          * @inheritable
 129          * @property {Object}
 130          */
 131         mw.widgets.datetime.ProlepticGregorianDateTimeFormatter.static.shortDayNames = null;
 132
 133         /**
 134          * Default day letters.
 135          *
 136          * @static
 137          * @inheritable
 138          * @property {string[]}
 139          */
 140         mw.widgets.datetime.ProlepticGregorianDateTimeFormatter.static.dayLetters = null;
 141
 142         /**
 143          * Default AM/PM indicators
 144          *
 145          * @static
 146          * @inheritable
 147          * @property {string[]}
 148          */
 149         mw.widgets.datetime.ProlepticGregorianDateTimeFormatter.static.hour12Periods = null;
 150
 151         mw.widgets.datetime.ProlepticGregorianDateTimeFormatter.static.setupDefaults = function () {
 152                 mw.widgets.datetime.DateTimeFormatter.static.setupDefaults.call( this );
 153
 154                 if ( this.fullMonthNames && !this.shortMonthNames ) {
 155                         this.shortMonthNames = {};
 156                         $.each( this.fullMonthNames, function ( k, v ) {
 157                                 this.shortMonthNames[ k ] = v.substr( 0, 3 );
 158                         }.bind( this ) );
 159                 }
 160                 if ( this.shortDayNames && !this.dayLetters ) {
 161                         this.dayLetters = [];
 162                         $.each( this.shortDayNames, function ( k, v ) {
 163                                 this.dayLetters[ k ] = v.substr( 0, 1 );
 164                         }.bind( this ) );
 165                 }
 166                 if ( this.fullDayNames && !this.dayLetters ) {
 167                         this.dayLetters = [];
 168                         $.each( this.fullDayNames, function ( k, v ) {
 169                                 this.dayLetters[ k ] = v.substr( 0, 1 );
 170                         }.bind( this ) );
 171                 }
 172                 if ( this.fullDayNames && !this.shortDayNames ) {
 173                         this.shortDayNames = {};
 174                         $.each( this.fullDayNames, function ( k, v ) {
 175                                 this.shortDayNames[ k ] = v.substr( 0, 3 );
 176                         }.bind( this ) );
 177                 }
 178
 179                 if ( !this.fullMonthNames ) {
 180                         this.fullMonthNames = {
 181                                 1: mw.msg( 'january' ),
 182                                 2: mw.msg( 'february' ),
 183                                 3: mw.msg( 'march' ),
 184                                 4: mw.msg( 'april' ),
 185                                 5: mw.msg( 'may_long' ),
 186                                 6: mw.msg( 'june' ),
 187                                 7: mw.msg( 'july' ),
 188                                 8: mw.msg( 'august' ),
 189                                 9: mw.msg( 'september' ),
 190                                 10: mw.msg( 'october' ),
 191                                 11: mw.msg( 'november' ),
 192                                 12: mw.msg( 'december' )
 193                         };
 194                 }
 195                 if ( !this.shortMonthNames ) {
 196                         this.shortMonthNames = {
 197                                 1: mw.msg( 'jan' ),
 198                                 2: mw.msg( 'feb' ),
 199                                 3: mw.msg( 'mar' ),
 200                                 4: mw.msg( 'apr' ),
 201                                 5: mw.msg( 'may' ),
 202                                 6: mw.msg( 'jun' ),
 203                                 7: mw.msg( 'jul' ),
 204                                 8: mw.msg( 'aug' ),
 205                                 9: mw.msg( 'sep' ),
 206                                 10: mw.msg( 'oct' ),
 207                                 11: mw.msg( 'nov' ),
 208                                 12: mw.msg( 'dec' )
 209                         };
 210                 }
 211
 212                 if ( !this.fullDayNames ) {
 213                         this.fullDayNames = {
 214                                 0: mw.msg( 'sunday' ),
 215                                 1: mw.msg( 'monday' ),
 216                                 2: mw.msg( 'tuesday' ),
 217                                 3: mw.msg( 'wednesday' ),
 218                                 4: mw.msg( 'thursday' ),
 219                                 5: mw.msg( 'friday' ),
 220                                 6: mw.msg( 'saturday' )
 221                         };
 222                 }
 223                 if ( !this.shortDayNames ) {
 224                         this.shortDayNames = {
 225                                 0: mw.msg( 'sun' ),
 226                                 1: mw.msg( 'mon' ),
 227                                 2: mw.msg( 'tue' ),
 228                                 3: mw.msg( 'wed' ),
 229                                 4: mw.msg( 'thu' ),
 230                                 5: mw.msg( 'fri' ),
 231                                 6: mw.msg( 'sat' )
 232                         };
 233                 }
 234                 if ( !this.dayLetters ) {
 235                         this.dayLetters = [];
 236                         $.each( this.shortDayNames, function ( k, v ) {
 237                                 this.dayLetters[ k ] = v.substr( 0, 1 );
 238                         }.bind( this ) );
 239                 }
 240
 241                 if ( !this.hour12Periods ) {
 242                         this.hour12Periods = [
 243                                 mw.msg( 'period-am' ),
 244                                 mw.msg( 'period-pm' )
 245                         ];
 246                 }
 247         };
 248
 249         /* Methods */
 250
 251         /**
 252          * @inheritdoc
 253          *
 254          * Additional fields implemented here are:
 255          * - ${year|#}: Year as a number
 256          * - ${year|0}: Year as a number, zero-padded to 4 digits
 257          * - ${month|#}: Month as a number
 258          * - ${month|0}: Month as a number with leading 0
 259          * - ${month|short}: Month from 'shortMonthNames' configuration setting
 260          * - ${month|full}: Month from 'fullMonthNames' configuration setting
 261          * - ${day|#}: Day of the month as a number
 262          * - ${day|0}: Day of the month as a number with leading 0
 263          * - ${dow|short}: Day of the week from 'shortDayNames' configuration setting
 264          * - ${dow|full}: Day of the week from 'fullDayNames' configuration setting
 265          * - ${hour|#}: Hour as a number
 266          * - ${hour|0}: Hour as a number with leading 0
 267          * - ${hour|12}: Hour in a 12-hour clock as a number
 268          * - ${hour|012}: Hour in a 12-hour clock as a number, with leading 0
 269          * - ${hour|period}: Value from 'hour12Periods' configuration setting
 270          * - ${minute|#}: Minute as a number
 271          * - ${minute|0}: Minute as a number with leading 0
 272          * - ${second|#}: Second as a number
 273          * - ${second|0}: Second as a number with leading 0
 274          * - ${millisecond|#}: Millisecond as a number
 275          * - ${millisecond|0}: Millisecond as a number, zero-padded to 3 digits
 276          */
 277         mw.widgets.datetime.ProlepticGregorianDateTimeFormatter.prototype.getFieldForTag = function ( tag, params ) {
 278                 var spec = null;
 279
 280                 switch ( tag + '|' + params[ 0 ] ) {
 281                         case 'year|#':
 282                         case 'year|0':
 283                                 spec = {
 284                                         component: 'year',
 285                                         type: 'number',
 286                                         size: 4,
 287                                         zeropad: params[ 0 ] === '0'
 288                                 };
 289                                 break;
 290
 291                         case 'month|short':
 292                         case 'month|full':
 293                                 spec = {
 294                                         component: 'month',
 295                                         type: 'string',
 296                                         values: params[ 0 ] === 'short' ? this.shortMonthNames : this.fullMonthNames
 297                                 };
 298                                 break;
 299
 300                         case 'dow|short':
 301                         case 'dow|full':
 302                                 spec = {
 303                                         component: 'dow',
 304                                         editable: false,
 305                                         type: 'string',
 306                                         values: params[ 0 ] === 'short' ? this.shortDayNames : this.fullDayNames
 307                                 };
 308                                 break;
 309
 310                         case 'month|#':
 311                         case 'month|0':
 312                         case 'day|#':
 313                         case 'day|0':
 314                         case 'hour|#':
 315                         case 'hour|0':
 316                         case 'minute|#':
 317                         case 'minute|0':
 318                         case 'second|#':
 319                         case 'second|0':
 320                                 spec = {
 321                                         component: tag,
 322                                         type: 'number',
 323                                         size: 2,
 324                                         zeropad: params[ 0 ] === '0'
 325                                 };
 326                                 break;
 327
 328                         case 'hour|12':
 329                         case 'hour|012':
 330                                 spec = {
 331                                         component: 'hour12',
 332                                         type: 'number',
 333                                         size: 2,
 334                                         zeropad: params[ 0 ] === '012'
 335                                 };
 336                                 break;
 337
 338                         case 'hour|period':
 339                                 spec = {
 340                                         component: 'hour12period',
 341                                         type: 'boolean',
 342                                         values: this.hour12Periods
 343                                 };
 344                                 break;
 345
 346                         case 'millisecond|#':
 347                         case 'millisecond|0':
 348                                 spec = {
 349                                         component: 'millisecond',
 350                                         type: 'number',
 351                                         size: 3,
 352                                         zeropad: params[ 0 ] === '0'
 353                                 };
 354                                 break;
 355
 356                         default:
 357                                 return mw.widgets.datetime.ProlepticGregorianDateTimeFormatter[ 'super' ].prototype.getFieldForTag.call( this, tag, params );
 358                 }
 359
 360                 if ( spec ) {
 361                         if ( spec.editable === undefined ) {
 362                                 spec.editable = true;
 363                         }
 364                         spec.formatValue = this.formatSpecValue;
 365                         spec.parseValue = this.parseSpecValue;
 366                         if ( spec.values ) {
 367                                 spec.size = Math.max.apply(
 368                                         null, $.map( spec.values, function ( v ) { return v.length; } )
 369                                 );
 370                         }
 371                 }
 372
 373                 return spec;
 374         };
 375
 376         /**
 377          * Get components from a Date object
 378          *
 379          * Components are:
 380          * - year {number}
 381          * - month {number} (1-12)
 382          * - day {number} (1-31)
 383          * - dow {number} (0-6, 0 is Sunday)
 384          * - hour {number} (0-23)
 385          * - hour12 {number} (1-12)
 386          * - hour12period {boolean}
 387          * - minute {number} (0-59)
 388          * - second {number} (0-59)
 389          * - millisecond {number} (0-999)
 390          * - zone {number}
 391          *
 392          * @param {Date|null} date
 393          * @return {Object} Components
 394          */
 395         mw.widgets.datetime.ProlepticGregorianDateTimeFormatter.prototype.getComponentsFromDate = function ( date ) {
 396                 var ret;
 397
 398                 if ( !( date instanceof Date ) ) {
 399                         date = this.defaultDate;
 400                 }
 401
 402                 if ( this.local ) {
 403                         ret = {
 404                                 year: date.getFullYear(),
 405                                 month: date.getMonth() + 1,
 406                                 day: date.getDate(),
 407                                 dow: date.getDay() % 7,
 408                                 hour: date.getHours(),
 409                                 minute: date.getMinutes(),
 410                                 second: date.getSeconds(),
 411                                 millisecond: date.getMilliseconds(),
 412                                 zone: date.getTimezoneOffset()
 413                         };
 414                 } else {
 415                         ret = {
 416                                 year: date.getUTCFullYear(),
 417                                 month: date.getUTCMonth() + 1,
 418                                 day: date.getUTCDate(),
 419                                 dow: date.getUTCDay() % 7,
 420                                 hour: date.getUTCHours(),
 421                                 minute: date.getUTCMinutes(),
 422                                 second: date.getUTCSeconds(),
 423                                 millisecond: date.getUTCMilliseconds(),
 424                                 zone: 0
 425                         };
 426                 }
 427
 428                 ret.hour12period = ret.hour >= 12 ? 1 : 0;
 429                 ret.hour12 = ret.hour % 12;
 430                 if ( ret.hour12 === 0 ) {
 431                         ret.hour12 = 12;
 432                 }
 433
 434                 return ret;
 435         };
 436
 437         /**
 438          * @inheritdoc
 439          */
 440         mw.widgets.datetime.ProlepticGregorianDateTimeFormatter.prototype.getDateFromComponents = function ( components ) {
 441                 var date = new Date();
 442
 443                 components = $.extend( {}, components );
 444                 if ( components.hour === undefined && components.hour12 !== undefined && components.hour12period !== undefined ) {
 445                         components.hour = ( components.hour12 % 12 ) + ( components.hour12period ? 12 : 0 );
 446                 }
 447                 components = $.extend( {}, this.getComponentsFromDate( null ), components );
 448
 449                 if ( components.zone ) {
 450                         // Can't just use the constructor because that's stupid about ancient years.
 451                         date.setFullYear( components.year, components.month - 1, components.day );
 452                         date.setHours( components.hour, components.minute, components.second, components.millisecond );
 453                 } else {
 454                         // Date.UTC() is stupid about ancient years too.
 455                         date.setUTCFullYear( components.year, components.month - 1, components.day );
 456                         date.setUTCHours( components.hour, components.minute, components.second, components.millisecond );
 457                 }
 458
 459                 return date;
 460         };
 461
 462         /**
 463          * @inheritdoc
 464          */
 465         mw.widgets.datetime.ProlepticGregorianDateTimeFormatter.prototype.adjustComponent = function ( date, component, delta, mode ) {
 466                 var min, max, range, components;
 467
 468                 if ( !( date instanceof Date ) ) {
 469                         date = this.defaultDate;
 470                 }
 471                 components = this.getComponentsFromDate( date );
 472
 473                 switch ( component ) {
 474                         case 'year':
 475                                 min = 0;
 476                                 max = 9999;
 477                                 break;
 478                         case 'month':
 479                                 min = 1;
 480                                 max = 12;
 481                                 break;
 482                         case 'day':
 483                                 min = 1;
 484                                 max = this.getDaysInMonth( components.month, components.year );
 485                                 break;
 486                         case 'hour':
 487                                 min = 0;
 488                                 max = 23;
 489                                 break;
 490                         case 'minute':
 491                         case 'second':
 492                                 min = 0;
 493                                 max = 59;
 494                                 break;
 495                         case 'millisecond':
 496                                 min = 0;
 497                                 max = 999;
 498                                 break;
 499                         case 'hour12period':
 500                                 component = 'hour';
 501                                 min = 0;
 502                                 max = 23;
 503                                 delta *= 12;
 504                                 break;
 505                         case 'hour12':
 506                                 component = 'hour';
 507                                 min = components.hour12period ? 12 : 0;
 508                                 max = components.hour12period ? 23 : 11;
 509                                 break;
 510                         default:
 511                                 return new Date( date.getTime() );
 512                 }
 513
 514                 components[ component ] += delta;
 515                 range = max - min + 1;
 516                 switch ( mode ) {
 517                         case 'overflow':
 518                                 // Date() will mostly handle it automatically. But months need
 519                                 // manual handling to prevent e.g. Jan 31 => Mar 3.
 520                                 if ( component === 'month' || component === 'year' ) {
 521                                         while ( components.month < 1 ) {
 522                                                 components[ component ] += 12;
 523                                                 components.year--;
 524                                         }
 525                                         while ( components.month > 12 ) {
 526                                                 components[ component ] -= 12;
 527                                                 components.year++;
 528                                         }
 529                                 }
 530                                 break;
 531                         case 'wrap':
 532                                 while ( components[ component ] < min ) {
 533                                         components[ component ] += range;
 534                                 }
 535                                 while ( components[ component ] > max ) {
 536                                         components[ component ] -= range;
 537                                 }
 538                                 break;
 539                         case 'clip':
 540                                 if ( components[ component ] < min ) {
 541                                         components[ component ] = min;
 542                                 }
 543                                 if ( components[ component ] < max ) {
 544                                         components[ component ] = max;
 545                                 }
 546                                 break;
 547                 }
 548                 if ( component === 'month' || component === 'year' ) {
 549                         components.day = Math.min( components.day, this.getDaysInMonth( components.month, components.year ) );
 550                 }
 551
 552                 return this.getDateFromComponents( components );
 553         };
 554
 555         /**
 556          * Get the number of days in a month
 557          *
 558          * @protected
 559          * @param {number} month
 560          * @param {number} year
 561          * @return {number}
 562          */
 563         mw.widgets.datetime.ProlepticGregorianDateTimeFormatter.prototype.getDaysInMonth = function ( month, year ) {
 564                 switch ( month ) {
 565                         case 4:
 566                         case 6:
 567                         case 9:
 568                         case 11:
 569                                 return 30;
 570                         case 2:
 571                                 if ( year % 4 ) {
 572                                         return 28;
 573                                 } else if ( year % 100 ) {
 574                                         return 29;
 575                                 }
 576                                 return ( year % 400 ) ? 28 : 29;
 577                         default:
 578                                 return 31;
 579                 }
 580         };
 581
 582         /**
 583          * @inheritdoc
 584          */
 585         mw.widgets.datetime.ProlepticGregorianDateTimeFormatter.prototype.getCalendarHeadings = function () {
 586                 var a = this.dayLetters;
 587
 588                 if ( this.weekStartsOn ) {
 589                         return a.slice( this.weekStartsOn ).concat( a.slice( 0, this.weekStartsOn ) );
 590                 } else {
 591                         return a.slice( 0 ); // clone
 592                 }
 593         };
 594
 595         /**
 596          * @inheritdoc
 597          */
 598         mw.widgets.datetime.ProlepticGregorianDateTimeFormatter.prototype.sameCalendarGrid = function ( date1, date2 ) {
 599                 if ( this.local ) {
 600                         return date1.getFullYear() === date2.getFullYear() && date1.getMonth() === date2.getMonth();
 601                 } else {
 602                         return date1.getUTCFullYear() === date2.getUTCFullYear() && date1.getUTCMonth() === date2.getUTCMonth();
 603                 }
 604         };
 605
 606         /**
 607          * @inheritdoc
 608          */
 609         mw.widgets.datetime.ProlepticGregorianDateTimeFormatter.prototype.getCalendarData = function ( date ) {
 610                 var dt, t, d, e, i, row,
 611                         getDate = this.local ? 'getDate' : 'getUTCDate',
 612                         setDate = this.local ? 'setDate' : 'setUTCDate',
 613                         ret = {
 614                                 dayComponent: 'day',
 615                                 monthComponent: 'month'
 616                         };
 617
 618                 if ( !( date instanceof Date ) ) {
 619                         date = this.defaultDate;
 620                 }
 621
 622                 dt = new Date( date.getTime() );
 623                 dt[ setDate ]( 1 );
 624                 t = dt.getTime();
 625
 626                 if ( this.local ) {
 627                         ret.header = this.fullMonthNames[ dt.getMonth() + 1 ] + ' ' + dt.getFullYear();
 628                         d = dt.getDay() % 7;
 629                         e = this.getDaysInMonth( dt.getMonth() + 1, dt.getFullYear() );
 630                 } else {
 631                         ret.header = this.fullMonthNames[ dt.getUTCMonth() + 1 ] + ' ' + dt.getUTCFullYear();
 632                         d = dt.getUTCDay() % 7;
 633                         e = this.getDaysInMonth( dt.getUTCMonth() + 1, dt.getUTCFullYear() );
 634                 }
 635
 636                 if ( this.weekStartsOn ) {
 637                         d = ( d + 7 - this.weekStartsOn ) % 7;
 638                 }
 639                 d = 1 - d;
 640
 641                 ret.rows = [];
 642                 while ( d <= e ) {
 643                         row = [];
 644                         for ( i = 0; i < 7; i++, d++ ) {
 645                                 dt = new Date( t );
 646                                 dt[ setDate ]( d );
 647                                 row[ i ] = {
 648                                         display: String( dt[ getDate ]() ),
 649                                         date: dt,
 650                                         extra: d < 1 ? 'prev' : d > e ? 'next' : null
 651                                 };
 652                         }
 653                         ret.rows.push( row );
 654                 }
 655
 656                 return ret;
 657         };
 658
 659 }( jQuery, mediaWiki ) );