resources/src/mediawiki.widgets/mw.widgets.DateInputWidget.js

   1 /*!
   2  * MediaWiki Widgets – DateInputWidget class.
   3  *
   4  * @copyright 2011-2015 MediaWiki Widgets Team and others; see AUTHORS.txt
   5  * @license The MIT License (MIT); see LICENSE.txt
   6  */
   7 /*global moment */
   8 ( function ( $, mw ) {
   9
  10         /**
  11          * Creates an mw.widgets.DateInputWidget object.
  12          *
  13          *     @example
  14          *     // Date input widget showcase
  15          *     var fieldset = new OO.ui.FieldsetLayout( {
  16          *       items: [
  17          *         new OO.ui.FieldLayout(
  18          *           new mw.widgets.DateInputWidget(),
  19          *           {
  20          *             align: 'top',
  21          *             label: 'Select date'
  22          *           }
  23          *         ),
  24          *         new OO.ui.FieldLayout(
  25          *           new mw.widgets.DateInputWidget( { precision: 'month' } ),
  26          *           {
  27          *             align: 'top',
  28          *             label: 'Select month'
  29          *           }
  30          *         ),
  31          *         new OO.ui.FieldLayout(
  32          *           new mw.widgets.DateInputWidget( {
  33          *             inputFormat: 'DD.MM.YYYY',
  34          *             displayFormat: 'Do [of] MMMM [anno Domini] YYYY'
  35          *           } ),
  36          *           {
  37          *             align: 'top',
  38          *             label: 'Select date (custom formats)'
  39          *           }
  40          *         )
  41          *       ]
  42          *     } );
  43          *     $( 'body' ).append( fieldset.$element );
  44          *
  45          * The value is stored in 'YYYY-MM-DD' or 'YYYY-MM' format:
  46          *
  47          *     @example
  48          *     // Accessing values in a date input widget
  49          *     var dateInput = new mw.widgets.DateInputWidget();
  50          *     var $label = $( '<p>' );
  51          *     $( 'body' ).append( $label, dateInput.$element );
  52          *     dateInput.on( 'change', function () {
  53          *       // The value will always be a valid date or empty string, malformed input is ignored
  54          *       var date = dateInput.getValue();
  55          *       $label.text( 'Selected date: ' + ( date || '(none)' ) );
  56          *     } );
  57          *
  58          * @class
  59          * @extends OO.ui.InputWidget
  60          * @mixins OO.ui.mixin.IndicatorElement
  61          *
  62          * @constructor
  63          * @param {Object} [config] Configuration options
  64          * @cfg {string} [precision='day'] Date precision to use, 'day' or 'month'
  65          * @cfg {string} [value] Day or month date (depending on `precision`), in the format 'YYYY-MM-DD'
  66          *     or 'YYYY-MM'. If not given or empty string, no date is selected.
  67          * @cfg {string} [inputFormat] Date format string to use for the textual input field. Displayed
  68          *     while the widget is active, and the user can type in a date in this format. Should be short
  69          *     and easy to type. When not given, defaults to 'YYYY-MM-DD' or 'YYYY-MM', depending on
  70          *     `precision`.
  71          * @cfg {string} [displayFormat] Date format string to use for the clickable label. Displayed
  72          *     while the widget is inactive. Should be as unambiguous as possible (for example, prefer to
  73          *     spell out the month, rather than rely on the order), even if that makes it longer. When not
  74          *     given, the default is language-specific.
  75          * @cfg {string} [placeholderLabel=No date selected] Placeholder text shown when the widget is not
  76          *     selected. Default text taken from message `mw-widgets-dateinput-no-date`.
  77          * @cfg {string} [placeholderDateFormat] User-visible date format string displayed in the textual input
  78          *     field when it's empty. Should be the same as `inputFormat`, but translated to the user's
  79          *     language. When not given, defaults to a translated version of 'YYYY-MM-DD' or 'YYYY-MM',
  80          *     depending on `precision`.
  81          * @cfg {boolean} [required=false] Mark the field as required. Implies `indicator: 'required'`.
  82          * @cfg {string} [mustBeAfter] Validates the date to be after this. In the 'YYYY-MM-DD' format.
  83          * @cfg {string} [mustBeBefore] Validates the date to be before this. In the 'YYYY-MM-DD' format.
  84          * @cfg {jQuery} [$overlay] Render the calendar into a separate layer. This configuration is
  85          *     useful in cases where the expanded calendar is larger than its container. The specified
  86          *     overlay layer is usually on top of the container and has a larger area. By default, the
  87          *     calendar uses relative positioning.
  88          */
  89         mw.widgets.DateInputWidget = function MWWDateInputWidget( config ) {
  90                 // Config initialization
  91                 config = $.extend( {
  92                         precision: 'day',
  93                         required: false,
  94                         placeholderLabel: mw.msg( 'mw-widgets-dateinput-no-date' )
  95                 }, config );
  96                 if ( config.required ) {
  97                         if ( config.indicator === undefined ) {
  98                                 config.indicator = 'required';
  99                         }
 100                 }
 101
 102                 var placeholderDateFormat, mustBeAfter, mustBeBefore;
 103                 if ( config.placeholderDateFormat ) {
 104                         placeholderDateFormat = config.placeholderDateFormat;
 105                 } else if ( config.inputFormat ) {
 106                         // We have no way to display a translated placeholder for custom formats
 107                         placeholderDateFormat = '';
 108                 } else {
 109                         // Messages: mw-widgets-dateinput-placeholder-day, mw-widgets-dateinput-placeholder-month
 110                         placeholderDateFormat = mw.msg( 'mw-widgets-dateinput-placeholder-' + config.precision );
 111                 }
 112
 113                 // Properties (must be set before parent constructor, which calls #setValue)
 114                 this.$handle = $( '<div>' );
 115                 this.label = new OO.ui.LabelWidget();
 116                 this.textInput = new OO.ui.TextInputWidget( {
 117                         required: config.required,
 118                         placeholder: placeholderDateFormat,
 119                         validate: this.validateDate.bind( this )
 120                 } );
 121                 this.calendar = new mw.widgets.CalendarWidget( {
 122                         // Can't pass `$floatableContainer: this.$element` here, the latter is not set yet.
 123                         // Instead we call setFloatableContainer() below.
 124                         precision: config.precision
 125                 } );
 126                 this.inCalendar = 0;
 127                 this.inTextInput = 0;
 128                 this.inputFormat = config.inputFormat;
 129                 this.displayFormat = config.displayFormat;
 130                 this.required = config.required;
 131                 this.placeholderLabel = config.placeholderLabel;
 132
 133                 // Validate and set min and max dates as properties
 134                 if ( config.mustBeAfter !== undefined ) {
 135                         mustBeAfter = moment( config.mustBeAfter, 'YYYY-MM-DD' );
 136                         if ( mustBeAfter.isValid() ) {
 137                                 this.mustBeAfter = mustBeAfter;
 138                         }
 139                 }
 140                 if ( config.mustBeBefore !== undefined ) {
 141                         mustBeBefore = moment( config.mustBeBefore, 'YYYY-MM-DD' );
 142                         if ( mustBeBefore.isValid() ) {
 143                                 this.mustBeBefore = mustBeBefore;
 144                         }
 145                 }
 146
 147                 // Parent constructor
 148                 mw.widgets.DateInputWidget.parent.call( this, config );
 149
 150                 // Mixin constructors
 151                 OO.ui.mixin.IndicatorElement.call( this, config );
 152
 153                 // Events
 154                 this.calendar.connect( this, {
 155                         change: 'onCalendarChange'
 156                 } );
 157                 this.textInput.connect( this, {
 158                         enter: 'onEnter',
 159                         change: 'onTextInputChange'
 160                 } );
 161                 this.$element.on( {
 162                         focusout: this.onBlur.bind( this )
 163                 } );
 164                 this.calendar.$element.on( {
 165                         click: this.onCalendarClick.bind( this ),
 166                         keypress: this.onCalendarKeyPress.bind( this )
 167                 } );
 168                 this.$handle.on( {
 169                         click: this.onClick.bind( this ),
 170                         keypress: this.onKeyPress.bind( this )
 171                 } );
 172
 173                 // Initialization
 174                 // Move 'tabindex' from this.$input (which is invisible) to the visible handle
 175                 this.setTabIndexedElement( this.$handle );
 176                 this.$handle
 177                         .append( this.label.$element, this.$indicator )
 178                         .addClass( 'mw-widget-dateInputWidget-handle' );
 179                 this.calendar.$element
 180                         .addClass( 'mw-widget-dateInputWidget-calendar' );
 181                 this.$element
 182                         .addClass( 'mw-widget-dateInputWidget' )
 183                         .append( this.$handle, this.textInput.$element, this.calendar.$element );
 184
 185                 if ( config.$overlay ) {
 186                         this.calendar.setFloatableContainer( this.$element );
 187                         config.$overlay.append( this.calendar.$element );
 188
 189                         // The text input and calendar are not in DOM order, so fix up focus transitions.
 190                         this.textInput.$input.on( 'keydown', function ( e ) {
 191                                 if ( e.which === OO.ui.Keys.TAB ) {
 192                                         if ( e.shiftKey ) {
 193                                                 // Tabbing backward from text input: normal browser behavior
 194                                                 $.noop();
 195                                         } else {
 196                                                 // Tabbing forward from text input: just focus the calendar
 197                                                 this.calendar.$element.focus();
 198                                                 return false;
 199                                         }
 200                                 }
 201                         }.bind( this ) );
 202                         this.calendar.$element.on( 'keydown', function ( e ) {
 203                                 if ( e.which === OO.ui.Keys.TAB ) {
 204                                         if ( e.shiftKey ) {
 205                                                 // Tabbing backward from calendar: just focus the text input
 206                                                 this.textInput.$input.focus();
 207                                                 return false;
 208                                         } else {
 209                                                 // Tabbing forward from calendar: focus the text input, then allow normal browser
 210                                                 // behavior to move focus to next focusable after it
 211                                                 this.textInput.$input.focus();
 212                                         }
 213                                 }
 214                         }.bind( this ) );
 215                 }
 216
 217                 // Set handle label and hide stuff
 218                 this.updateUI();
 219                 this.textInput.toggle( false );
 220                 this.calendar.toggle( false );
 221         };
 222
 223         /* Inheritance */
 224
 225         OO.inheritClass( mw.widgets.DateInputWidget, OO.ui.InputWidget );
 226         OO.mixinClass( mw.widgets.DateInputWidget, OO.ui.mixin.IndicatorElement );
 227
 228         /* Methods */
 229
 230         /**
 231          * @inheritdoc
 232          * @protected
 233          */
 234         mw.widgets.DateInputWidget.prototype.getInputElement = function () {
 235                 return $( '<input>' ).attr( 'type', 'hidden' );
 236         };
 237
 238         /**
 239          * Respond to calendar date change events.
 240          *
 241          * @private
 242          */
 243         mw.widgets.DateInputWidget.prototype.onCalendarChange = function () {
 244                 this.inCalendar++;
 245                 if ( !this.inTextInput ) {
 246                         // If this is caused by user typing in the input field, do not set anything.
 247                         // The value may be invalid (see #onTextInputChange), but displayable on the calendar.
 248                         this.setValue( this.calendar.getDate() );
 249                 }
 250                 this.inCalendar--;
 251         };
 252
 253         /**
 254          * Respond to text input value change events.
 255          *
 256          * @private
 257          */
 258         mw.widgets.DateInputWidget.prototype.onTextInputChange = function () {
 259                 var mom,
 260                         widget = this,
 261                         value = this.textInput.getValue(),
 262                         valid = this.isValidDate( value );
 263                 this.inTextInput++;
 264
 265                 if ( value === '' ) {
 266                         // No date selected
 267                         widget.setValue( '' );
 268                 } else if ( valid ) {
 269                         // Well-formed date value, parse and set it
 270                         mom = moment( value, widget.getInputFormat() );
 271                         // Use English locale to avoid number formatting
 272                         widget.setValue( mom.locale( 'en' ).format( widget.getInternalFormat() ) );
 273                 } else {
 274                         // Not well-formed, but possibly partial? Try updating the calendar, but do not set the
 275                         // internal value. Generally this only makes sense when 'inputFormat' is little-endian (e.g.
 276                         // 'YYYY-MM-DD'), but that's hard to check for, and might be difficult to handle the parsing
 277                         // right for weird formats. So limit this trick to only when we're using the default
 278                         // 'inputFormat', which is the same as the internal format, 'YYYY-MM-DD'.
 279                         if ( widget.getInputFormat() === widget.getInternalFormat() ) {
 280                                 widget.calendar.setDate( widget.textInput.getValue() );
 281                         }
 282                 }
 283                 widget.inTextInput--;
 284
 285         };
 286
 287         /**
 288          * @inheritdoc
 289          */
 290         mw.widgets.DateInputWidget.prototype.setValue = function ( value ) {
 291                 var oldValue = this.value;
 292
 293                 if ( !moment( value, this.getInternalFormat() ).isValid() ) {
 294                         value = '';
 295                 }
 296
 297                 mw.widgets.DateInputWidget.parent.prototype.setValue.call( this, value );
 298
 299                 if ( this.value !== oldValue ) {
 300                         this.updateUI();
 301                         this.setValidityFlag();
 302                 }
 303
 304                 return this;
 305         };
 306
 307         /**
 308          * Handle text input and calendar blur events.
 309          *
 310          * @private
 311          */
 312         mw.widgets.DateInputWidget.prototype.onBlur = function () {
 313                 var widget = this;
 314                 setTimeout( function () {
 315                         var $focussed = $( ':focus' );
 316                         // Deactivate unless the focus moved to something else inside this widget
 317                         if (
 318                                 !OO.ui.contains( widget.$element[ 0 ], $focussed[ 0 ], true ) &&
 319                                 // Calendar might be in an $overlay
 320                                 !OO.ui.contains( widget.calendar.$element[ 0 ], $focussed[ 0 ], true )
 321                         ) {
 322                                 widget.deactivate();
 323                         }
 324                 }, 0 );
 325         };
 326
 327         /**
 328          * @inheritdoc
 329          */
 330         mw.widgets.DateInputWidget.prototype.focus = function () {
 331                 this.activate();
 332                 return this;
 333         };
 334
 335         /**
 336          * @inheritdoc
 337          */
 338         mw.widgets.DateInputWidget.prototype.blur = function () {
 339                 this.deactivate();
 340                 return this;
 341         };
 342
 343         /**
 344          * Update the contents of the label, text input and status of calendar to reflect selected value.
 345          *
 346          * @private
 347          */
 348         mw.widgets.DateInputWidget.prototype.updateUI = function () {
 349                 var moment;
 350                 if ( this.getValue() === '' ) {
 351                         this.textInput.setValue( '' );
 352                         this.calendar.setDate( null );
 353                         this.label.setLabel( this.placeholderLabel );
 354                         this.$element.addClass( 'mw-widget-dateInputWidget-empty' );
 355                 } else {
 356                         moment = this.getMoment();
 357                         if ( !this.inTextInput ) {
 358                                 this.textInput.setValue( moment.format( this.getInputFormat() ) );
 359                         }
 360                         if ( !this.inCalendar ) {
 361                                 this.calendar.setDate( this.getValue() );
 362                         }
 363                         this.label.setLabel( moment.format( this.getDisplayFormat() ) );
 364                         this.$element.removeClass( 'mw-widget-dateInputWidget-empty' );
 365                 }
 366         };
 367
 368         /**
 369          * Deactivate this input field for data entry. Closes the calendar and hides the text field.
 370          *
 371          * @private
 372          */
 373         mw.widgets.DateInputWidget.prototype.deactivate = function () {
 374                 this.$element.removeClass( 'mw-widget-dateInputWidget-active' );
 375                 this.$handle.show();
 376                 this.textInput.toggle( false );
 377                 this.calendar.toggle( false );
 378                 this.setValidityFlag();
 379         };
 380
 381         /**
 382          * Activate this input field for data entry. Opens the calendar and shows the text field.
 383          *
 384          * @private
 385          */
 386         mw.widgets.DateInputWidget.prototype.activate = function () {
 387                 this.calendar.resetUI();
 388                 this.$element.addClass( 'mw-widget-dateInputWidget-active' );
 389                 this.$handle.hide();
 390                 this.textInput.toggle( true );
 391                 this.calendar.toggle( true );
 392
 393                 this.textInput.$input.focus();
 394         };
 395
 396         /**
 397          * Get the date format to be used for handle label when the input is inactive.
 398          *
 399          * @private
 400          * @return {string} Format string
 401          */
 402         mw.widgets.DateInputWidget.prototype.getDisplayFormat = function () {
 403                 if ( this.displayFormat !== undefined ) {
 404                         return this.displayFormat;
 405                 }
 406
 407                 if ( this.calendar.getPrecision() === 'month' ) {
 408                         return 'MMMM YYYY';
 409                 } else {
 410                         // The formats Moment.js provides:
 411                         // * ll:   Month name, day of month, year
 412                         // * lll:  Month name, day of month, year, time
 413                         // * llll: Month name, day of month, day of week, year, time
 414                         //
 415                         // The format we want:
 416                         // * ????: Month name, day of month, day of week, year
 417                         //
 418                         // We try to construct it as 'llll - (lll - ll)' and hope for the best.
 419                         // This seems to work well for many languages (maybe even all?).
 420
 421                         var localeData = moment.localeData( moment.locale() ),
 422                                 llll = localeData.longDateFormat( 'llll' ),
 423                                 lll = localeData.longDateFormat( 'lll' ),
 424                                 ll = localeData.longDateFormat( 'll' ),
 425                                 format = llll.replace( lll.replace( ll, '' ), '' );
 426
 427                         return format;
 428                 }
 429         };
 430
 431         /**
 432          * Get the date format to be used for the text field when the input is active.
 433          *
 434          * @private
 435          * @return {string} Format string
 436          */
 437         mw.widgets.DateInputWidget.prototype.getInputFormat = function () {
 438                 if ( this.inputFormat !== undefined ) {
 439                         return this.inputFormat;
 440                 }
 441
 442                 return {
 443                         day: 'YYYY-MM-DD',
 444                         month: 'YYYY-MM'
 445                 }[ this.calendar.getPrecision() ];
 446         };
 447
 448         /**
 449          * Get the date format to be used internally for the value. This is not configurable in any way,
 450          * and always either 'YYYY-MM-DD' or 'YYYY-MM'.
 451          *
 452          * @private
 453          * @return {string} Format string
 454          */
 455         mw.widgets.DateInputWidget.prototype.getInternalFormat = function () {
 456                 return {
 457                         day: 'YYYY-MM-DD',
 458                         month: 'YYYY-MM'
 459                 }[ this.calendar.getPrecision() ];
 460         };
 461
 462         /**
 463          * Get the Moment object for current value.
 464          *
 465          * @return {Object} Moment object
 466          */
 467         mw.widgets.DateInputWidget.prototype.getMoment = function () {
 468                 return moment( this.getValue(), this.getInternalFormat() );
 469         };
 470
 471         /**
 472          * Handle mouse click events.
 473          *
 474          * @private
 475          * @param {jQuery.Event} e Mouse click event
 476          */
 477         mw.widgets.DateInputWidget.prototype.onClick = function ( e ) {
 478                 if ( !this.isDisabled() && e.which === 1 ) {
 479                         this.activate();
 480                 }
 481                 return false;
 482         };
 483
 484         /**
 485          * Handle key press events.
 486          *
 487          * @private
 488          * @param {jQuery.Event} e Key press event
 489          */
 490         mw.widgets.DateInputWidget.prototype.onKeyPress = function ( e ) {
 491                 if ( !this.isDisabled() &&
 492                         ( e.which === OO.ui.Keys.SPACE || e.which === OO.ui.Keys.ENTER )
 493                 ) {
 494                         this.activate();
 495                         return false;
 496                 }
 497         };
 498
 499         /**
 500          * Handle calendar key press events.
 501          *
 502          * @private
 503          * @param {jQuery.Event} e Key press event
 504          */
 505         mw.widgets.DateInputWidget.prototype.onCalendarKeyPress = function ( e ) {
 506                 if ( !this.isDisabled() && e.which === OO.ui.Keys.ENTER ) {
 507                         this.deactivate();
 508                         this.$handle.focus();
 509                         return false;
 510                 }
 511         };
 512
 513         /**
 514          * Handle calendar click events.
 515          *
 516          * @private
 517          * @param {jQuery.Event} e Mouse click event
 518          */
 519         mw.widgets.DateInputWidget.prototype.onCalendarClick = function ( e ) {
 520                 if (
 521                         !this.isDisabled() &&
 522                         e.which === 1 &&
 523                         $( e.target ).hasClass( 'mw-widget-calendarWidget-day' )
 524                 ) {
 525                         this.deactivate();
 526                         this.$handle.focus();
 527                         return false;
 528                 }
 529         };
 530
 531         /**
 532          * Handle text input enter events.
 533          *
 534          * @private
 535          */
 536         mw.widgets.DateInputWidget.prototype.onEnter = function () {
 537                 this.deactivate();
 538                 this.$handle.focus();
 539         };
 540
 541         /**
 542          * @private
 543          * @param {string} date Date string, to be valid, must be in 'YYYY-MM-DD' or 'YYYY-MM' format or
 544          *     (unless the field is required) empty
 545          * @return {boolean}
 546          */
 547         mw.widgets.DateInputWidget.prototype.validateDate = function ( date ) {
 548                 var isValid;
 549                 if ( date === '' ) {
 550                         isValid = !this.required;
 551                 } else {
 552                         isValid = this.isValidDate( date ) && this.isInRange( date );
 553                 }
 554                 return isValid;
 555         };
 556
 557         /**
 558          * @private
 559          * @param {string} date Date string, to be valid, must be in 'YYYY-MM-DD' or 'YYYY-MM' format
 560          * @return {boolean}
 561          */
 562         mw.widgets.DateInputWidget.prototype.isValidDate = function ( date ) {
 563                 // "Half-strict mode": for example, for the format 'YYYY-MM-DD', 2015-1-3 instead of 2015-01-03
 564                 // is okay, but 2015-01 isn't, and neither is 2015-01-foo. Use Moment's "fuzzy" mode and check
 565                 // parsing flags for the details (stolen from implementation of moment#isValid).
 566                 var
 567                         mom = moment( date, this.getInputFormat() ),
 568                         flags = mom.parsingFlags();
 569
 570                 return mom.isValid() && flags.charsLeftOver === 0 && flags.unusedTokens.length === 0;
 571         };
 572
 573         /**
 574          * Validates if the date is within the range configured with {@link #cfg-mustBeAfter}
 575          * and {@link #cfg-mustBeBefore}.
 576          *
 577          * @private
 578          * @param {string} date Date string, to be valid, must be empty (no date selected) or in
 579          *     'YYYY-MM-DD' or 'YYYY-MM' format to be valid
 580          * @return {boolean}
 581          */
 582         mw.widgets.DateInputWidget.prototype.isInRange = function ( date ) {
 583                 var momentDate, isAfter, isBefore;
 584                 if ( this.mustBeAfter === undefined && this.mustBeBefore === undefined ) {
 585                         return true;
 586                 }
 587                 momentDate = moment( date, 'YYYY-MM-DD' );
 588                 isAfter = ( this.mustBeAfter === undefined || momentDate.isAfter( this.mustBeAfter ) );
 589                 isBefore = ( this.mustBeBefore === undefined || momentDate.isBefore( this.mustBeBefore ) );
 590                 return isAfter && isBefore;
 591         };
 592
 593         /**
 594          * Get the validity of current value.
 595          *
 596          * This method returns a promise that resolves if the value is valid and rejects if
 597          * it isn't. Uses {@link #validateDate}.
 598          *
 599          * @return {jQuery.Promise} A promise that resolves if the value is valid, rejects if not.
 600          */
 601         mw.widgets.DateInputWidget.prototype.getValidity = function () {
 602                 var isValid = this.validateDate( this.getValue() );
 603
 604                 if ( isValid ) {
 605                         return $.Deferred().resolve().promise();
 606                 } else {
 607                         return $.Deferred().reject().promise();
 608                 }
 609         };
 610
 611         /**
 612          * Sets the 'invalid' flag appropriately.
 613          *
 614          * @param {boolean} [isValid] Optionally override validation result
 615          */
 616         mw.widgets.DateInputWidget.prototype.setValidityFlag = function ( isValid ) {
 617                 var widget = this,
 618                         setFlag = function ( valid ) {
 619                                 if ( !valid ) {
 620                                         widget.$input.attr( 'aria-invalid', 'true' );
 621                                 } else {
 622                                         widget.$input.removeAttr( 'aria-invalid' );
 623                                 }
 624                                 widget.setFlags( { invalid: !valid } );
 625                         };
 626
 627                 if ( isValid !== undefined ) {
 628                         setFlag( isValid );
 629                 } else {
 630                         this.getValidity().then( function () {
 631                                 setFlag( true );
 632                         }, function () {
 633                                 setFlag( false );
 634                         } );
 635                 }
 636         };
 637
 638 }( jQuery, mediaWiki ) );