resources/src/mediawiki.special/mediawiki.special.apisandbox.js

   1 ( function ( $, mw, OO ) {
   2         'use strict';
   3         var ApiSandbox, Util, WidgetMethods, Validators,
   4                 $content, panel, booklet, oldhash, windowManager,
   5                 formatDropdown,
   6                 api = new mw.Api(),
   7                 bookletPages = [],
   8                 availableFormats = {},
   9                 resultPage = null,
  10                 suppressErrors = true,
  11                 updatingBooklet = false,
  12                 pages = {},
  13                 moduleInfoCache = {},
  14                 baseRequestParams;
  15
  16         /**
  17          * A wrapper for a widget that provides an enable/disable button
  18          *
  19          * @class
  20          * @private
  21          * @constructor
  22          * @param {OO.ui.Widget} widget
  23          * @param {Object} [config] Configuration options
  24          */
  25         function OptionalWidget( widget, config ) {
  26                 var k;
  27
  28                 config = config || {};
  29
  30                 this.widget = widget;
  31                 this.$cover = config.$cover ||
  32                         $( '<div>' ).addClass( 'mw-apisandbox-optionalWidget-cover' );
  33                 this.checkbox = new OO.ui.CheckboxInputWidget( config.checkbox )
  34                         .on( 'change', this.onCheckboxChange, [], this );
  35
  36                 OptionalWidget[ 'super' ].call( this, config );
  37
  38                 // Forward most methods for convenience
  39                 for ( k in this.widget ) {
  40                         if ( $.isFunction( this.widget[ k ] ) && !this[ k ] ) {
  41                                 this[ k ] = this.widget[ k ].bind( this.widget );
  42                         }
  43                 }
  44
  45                 this.$cover.on( 'click', this.onOverlayClick.bind( this ) );
  46
  47                 this.$element
  48                         .addClass( 'mw-apisandbox-optionalWidget' )
  49                         .append(
  50                                 this.$cover,
  51                                 $( '<div>' ).addClass( 'mw-apisandbox-optionalWidget-fields' ).append(
  52                                         $( '<div>' ).addClass( 'mw-apisandbox-optionalWidget-widget' ).append(
  53                                                 widget.$element
  54                                         ),
  55                                         $( '<div>' ).addClass( 'mw-apisandbox-optionalWidget-checkbox' ).append(
  56                                                 this.checkbox.$element
  57                                         )
  58                                 )
  59                         );
  60
  61                 this.setDisabled( widget.isDisabled() );
  62         }
  63         OO.inheritClass( OptionalWidget, OO.ui.Widget );
  64         OptionalWidget.prototype.onCheckboxChange = function ( checked ) {
  65                 this.setDisabled( !checked );
  66         };
  67         OptionalWidget.prototype.onOverlayClick = function () {
  68                 this.setDisabled( false );
  69                 if ( $.isFunction( this.widget.focus ) ) {
  70                         this.widget.focus();
  71                 }
  72         };
  73         OptionalWidget.prototype.setDisabled = function ( disabled ) {
  74                 OptionalWidget[ 'super' ].prototype.setDisabled.call( this, disabled );
  75                 this.widget.setDisabled( this.isDisabled() );
  76                 this.checkbox.setSelected( !this.isDisabled() );
  77                 this.$cover.toggle( this.isDisabled() );
  78                 return this;
  79         };
  80
  81         WidgetMethods = {
  82                 textInputWidget: {
  83                         getApiValue: function () {
  84                                 return this.getValue();
  85                         },
  86                         setApiValue: function ( v ) {
  87                                 if ( v === undefined ) {
  88                                         v = this.paramInfo[ 'default' ];
  89                                 }
  90                                 this.setValue( v );
  91                         },
  92                         apiCheckValid: function () {
  93                                 var that = this;
  94                                 return this.getValidity().then( function () {
  95                                         return $.Deferred().resolve( true ).promise();
  96                                 }, function () {
  97                                         return $.Deferred().resolve( false ).promise();
  98                                 } ).done( function ( ok ) {
  99                                         ok = ok || suppressErrors;
 100                                         that.setIcon( ok ? null : 'alert' );
 101                                         that.setIconTitle( ok ? '' : mw.message( 'apisandbox-alert-field' ).plain() );
 102                                 } );
 103                         }
 104                 },
 105
 106                 dateTimeInputWidget: {
 107                         getValidity: function () {
 108                                 if ( !Util.apiBool( this.paramInfo.required ) || this.getApiValue() !== '' ) {
 109                                         return $.Deferred().resolve().promise();
 110                                 } else {
 111                                         return $.Deferred().reject().promise();
 112                                 }
 113                         }
 114                 },
 115
 116                 tokenWidget: {
 117                         alertTokenError: function ( code, error ) {
 118                                 windowManager.openWindow( 'errorAlert', {
 119                                         title: Util.parseMsg( 'apisandbox-results-fixtoken-fail', this.paramInfo.tokentype ),
 120                                         message: error,
 121                                         actions: [
 122                                                 {
 123                                                         action: 'accept',
 124                                                         label: OO.ui.msg( 'ooui-dialog-process-dismiss' ),
 125                                                         flags: 'primary'
 126                                                 }
 127                                         ]
 128                                 } );
 129                         },
 130                         fetchToken: function () {
 131                                 this.pushPending();
 132                                 return api.getToken( this.paramInfo.tokentype )
 133                                         .done( this.setApiValue.bind( this ) )
 134                                         .fail( this.alertTokenError.bind( this ) )
 135                                         .always( this.popPending.bind( this ) );
 136                         },
 137                         setApiValue: function ( v ) {
 138                                 WidgetMethods.textInputWidget.setApiValue.call( this, v );
 139                                 if ( v === '123ABC' ) {
 140                                         this.fetchToken();
 141                                 }
 142                         }
 143                 },
 144
 145                 passwordWidget: {
 146                         getApiValueForDisplay: function () {
 147                                 return '';
 148                         }
 149                 },
 150
 151                 toggleSwitchWidget: {
 152                         getApiValue: function () {
 153                                 return this.getValue() ? 1 : undefined;
 154                         },
 155                         setApiValue: function ( v ) {
 156                                 this.setValue( Util.apiBool( v ) );
 157                         },
 158                         apiCheckValid: function () {
 159                                 return $.Deferred().resolve( true ).promise();
 160                         }
 161                 },
 162
 163                 dropdownWidget: {
 164                         getApiValue: function () {
 165                                 var item = this.getMenu().findSelectedItem();
 166                                 return item === null ? undefined : item.getData();
 167                         },
 168                         setApiValue: function ( v ) {
 169                                 var menu = this.getMenu();
 170
 171                                 if ( v === undefined ) {
 172                                         v = this.paramInfo[ 'default' ];
 173                                 }
 174                                 if ( v === undefined ) {
 175                                         menu.selectItem();
 176                                 } else {
 177                                         menu.selectItemByData( String( v ) );
 178                                 }
 179                         },
 180                         apiCheckValid: function () {
 181                                 var ok = this.getApiValue() !== undefined || suppressErrors;
 182                                 this.setIcon( ok ? null : 'alert' );
 183                                 this.setIconTitle( ok ? '' : mw.message( 'apisandbox-alert-field' ).plain() );
 184                                 return $.Deferred().resolve( ok ).promise();
 185                         }
 186                 },
 187
 188                 tagWidget: {
 189                         getApiValue: function () {
 190                                 var items = this.getValue();
 191                                 if ( items.join( '' ).indexOf( '|' ) === -1 ) {
 192                                         return items.join( '|' );
 193                                 } else {
 194                                         return '\x1f' + items.join( '\x1f' );
 195                                 }
 196                         },
 197                         setApiValue: function ( v ) {
 198                                 if ( v === undefined || v === '' || v === '\x1f' ) {
 199                                         this.setValue( [] );
 200                                 } else {
 201                                         v = String( v );
 202                                         if ( v.indexOf( '\x1f' ) !== 0 ) {
 203                                                 this.setValue( v.split( '|' ) );
 204                                         } else {
 205                                                 this.setValue( v.substr( 1 ).split( '\x1f' ) );
 206                                         }
 207                                 }
 208                         },
 209                         apiCheckValid: function () {
 210                                 var ok = true,
 211                                         pi = this.paramInfo;
 212
 213                                 if ( !suppressErrors ) {
 214                                         ok = this.getApiValue() !== undefined && !(
 215                                                 pi.allspecifier !== undefined &&
 216                                                 this.getValue().length > 1 &&
 217                                                 this.getValue().indexOf( pi.allspecifier ) !== -1
 218                                         );
 219                                 }
 220
 221                                 this.setIcon( ok ? null : 'alert' );
 222                                 this.setIconTitle( ok ? '' : mw.message( 'apisandbox-alert-field' ).plain() );
 223                                 return $.Deferred().resolve( ok ).promise();
 224                         },
 225                         createTagItemWidget: function ( data, label ) {
 226                                 var item = OO.ui.TagMultiselectWidget.prototype.createTagItemWidget.call( this, data, label );
 227                                 if ( this.paramInfo.deprecatedvalues &&
 228                                         this.paramInfo.deprecatedvalues.indexOf( data ) >= 0
 229                                 ) {
 230                                         item.$element.addClass( 'apihelp-deprecated-value' );
 231                                 }
 232                                 return item;
 233                         }
 234                 },
 235
 236                 optionalWidget: {
 237                         getApiValue: function () {
 238                                 return this.isDisabled() ? undefined : this.widget.getApiValue();
 239                         },
 240                         setApiValue: function ( v ) {
 241                                 this.setDisabled( v === undefined );
 242                                 this.widget.setApiValue( v );
 243                         },
 244                         apiCheckValid: function () {
 245                                 if ( this.isDisabled() ) {
 246                                         return $.Deferred().resolve( true ).promise();
 247                                 } else {
 248                                         return this.widget.apiCheckValid();
 249                                 }
 250                         }
 251                 },
 252
 253                 submoduleWidget: {
 254                         single: function () {
 255                                 var v = this.isDisabled() ? this.paramInfo[ 'default' ] : this.getApiValue();
 256                                 return v === undefined ? [] : [ { value: v, path: this.paramInfo.submodules[ v ] } ];
 257                         },
 258                         multi: function () {
 259                                 var map = this.paramInfo.submodules,
 260                                         v = this.isDisabled() ? this.paramInfo[ 'default' ] : this.getApiValue();
 261                                 return v === undefined || v === '' ? [] : String( v ).split( '|' ).map( function ( v ) {
 262                                         return { value: v, path: map[ v ] };
 263                                 } );
 264                         }
 265                 },
 266
 267                 uploadWidget: {
 268                         getApiValueForDisplay: function () {
 269                                 return '...';
 270                         },
 271                         getApiValue: function () {
 272                                 return this.getValue();
 273                         },
 274                         setApiValue: function () {
 275                                 // Can't, sorry.
 276                         },
 277                         apiCheckValid: function () {
 278                                 var ok = this.getValue() !== null || suppressErrors;
 279                                 this.setIcon( ok ? null : 'alert' );
 280                                 this.setIconTitle( ok ? '' : mw.message( 'apisandbox-alert-field' ).plain() );
 281                                 return $.Deferred().resolve( ok ).promise();
 282                         }
 283                 }
 284         };
 285
 286         Validators = {
 287                 generic: function () {
 288                         return !Util.apiBool( this.paramInfo.required ) || this.getApiValue() !== '';
 289                 }
 290         };
 291
 292         /**
 293          * @class mw.special.ApiSandbox.Util
 294          * @private
 295          */
 296         Util = {
 297                 /**
 298                  * Fetch API module info
 299                  *
 300                  * @param {string} module Module to fetch data for
 301                  * @return {jQuery.Promise}
 302                  */
 303                 fetchModuleInfo: function ( module ) {
 304                         var apiPromise,
 305                                 deferred = $.Deferred();
 306
 307                         if ( moduleInfoCache.hasOwnProperty( module ) ) {
 308                                 return deferred
 309                                         .resolve( moduleInfoCache[ module ] )
 310                                         .promise( { abort: function () {} } );
 311                         } else {
 312                                 apiPromise = api.post( {
 313                                         action: 'paraminfo',
 314                                         modules: module,
 315                                         helpformat: 'html',
 316                                         uselang: mw.config.get( 'wgUserLanguage' )
 317                                 } ).done( function ( data ) {
 318                                         var info;
 319
 320                                         if ( data.warnings && data.warnings.paraminfo ) {
 321                                                 deferred.reject( '???', data.warnings.paraminfo[ '*' ] );
 322                                                 return;
 323                                         }
 324
 325                                         info = data.paraminfo.modules;
 326                                         if ( !info || info.length !== 1 || info[ 0 ].path !== module ) {
 327                                                 deferred.reject( '???', 'No module data returned' );
 328                                                 return;
 329                                         }
 330
 331                                         moduleInfoCache[ module ] = info[ 0 ];
 332                                         deferred.resolve( info[ 0 ] );
 333                                 } ).fail( function ( code, details ) {
 334                                         if ( code === 'http' ) {
 335                                                 details = 'HTTP error: ' + details.exception;
 336                                         } else if ( details.error ) {
 337                                                 details = details.error.info;
 338                                         }
 339                                         deferred.reject( code, details );
 340                                 } );
 341                                 return deferred
 342                                         .promise( { abort: apiPromise.abort } );
 343                         }
 344                 },
 345
 346                 /**
 347                  * Mark all currently-in-use tokens as bad
 348                  */
 349                 markTokensBad: function () {
 350                         var page, subpages, i,
 351                                 checkPages = [ pages.main ];
 352
 353                         while ( checkPages.length ) {
 354                                 page = checkPages.shift();
 355
 356                                 if ( page.tokenWidget ) {
 357                                         api.badToken( page.tokenWidget.paramInfo.tokentype );
 358                                 }
 359
 360                                 subpages = page.getSubpages();
 361                                 for ( i = 0; i < subpages.length; i++ ) {
 362                                         if ( pages.hasOwnProperty( subpages[ i ].key ) ) {
 363                                                 checkPages.push( pages[ subpages[ i ].key ] );
 364                                         }
 365                                 }
 366                         }
 367                 },
 368
 369                 /**
 370                  * Test an API boolean
 371                  *
 372                  * @param {Mixed} value
 373                  * @return {boolean}
 374                  */
 375                 apiBool: function ( value ) {
 376                         return value !== undefined && value !== false;
 377                 },
 378
 379                 /**
 380                  * Create a widget for a parameter.
 381                  *
 382                  * @param {Object} pi Parameter info from API
 383                  * @param {Object} opts Additional options
 384                  * @return {OO.ui.Widget}
 385                  */
 386                 createWidgetForParameter: function ( pi, opts ) {
 387                         var widget, innerWidget, finalWidget, items, $content, func,
 388                                 multiModeButton = null,
 389                                 multiModeInput = null,
 390                                 multiModeAllowed = false;
 391
 392                         opts = opts || {};
 393
 394                         switch ( pi.type ) {
 395                                 case 'boolean':
 396                                         widget = new OO.ui.ToggleSwitchWidget();
 397                                         widget.paramInfo = pi;
 398                                         $.extend( widget, WidgetMethods.toggleSwitchWidget );
 399                                         pi.required = true; // Avoid wrapping in the non-required widget
 400                                         break;
 401
 402                                 case 'string':
 403                                 case 'user':
 404                                         if ( Util.apiBool( pi.multi ) ) {
 405                                                 widget = new OO.ui.TagMultiselectWidget( {
 406                                                         allowArbitrary: true,
 407                                                         allowDuplicates: Util.apiBool( pi.allowsduplicates ),
 408                                                         $overlay: true
 409                                                 } );
 410                                                 widget.paramInfo = pi;
 411                                                 $.extend( widget, WidgetMethods.tagWidget );
 412                                         } else {
 413                                                 widget = new OO.ui.TextInputWidget( {
 414                                                         required: Util.apiBool( pi.required )
 415                                                 } );
 416                                         }
 417                                         if ( !Util.apiBool( pi.multi ) ) {
 418                                                 widget.paramInfo = pi;
 419                                                 $.extend( widget, WidgetMethods.textInputWidget );
 420                                                 widget.setValidation( Validators.generic );
 421                                         }
 422                                         if ( pi.tokentype ) {
 423                                                 widget.paramInfo = pi;
 424                                                 $.extend( widget, WidgetMethods.textInputWidget );
 425                                                 $.extend( widget, WidgetMethods.tokenWidget );
 426                                         }
 427                                         break;
 428
 429                                 case 'text':
 430                                         widget = new OO.ui.MultilineTextInputWidget( {
 431                                                 required: Util.apiBool( pi.required )
 432                                         } );
 433                                         widget.paramInfo = pi;
 434                                         $.extend( widget, WidgetMethods.textInputWidget );
 435                                         widget.setValidation( Validators.generic );
 436                                         break;
 437
 438                                 case 'password':
 439                                         widget = new OO.ui.TextInputWidget( {
 440                                                 type: 'password',
 441                                                 required: Util.apiBool( pi.required )
 442                                         } );
 443                                         widget.paramInfo = pi;
 444                                         $.extend( widget, WidgetMethods.textInputWidget );
 445                                         $.extend( widget, WidgetMethods.passwordWidget );
 446                                         widget.setValidation( Validators.generic );
 447                                         multiModeAllowed = true;
 448                                         multiModeInput = widget;
 449                                         break;
 450
 451                                 case 'integer':
 452                                         widget = new OO.ui.NumberInputWidget( {
 453                                                 required: Util.apiBool( pi.required ),
 454                                                 isInteger: true
 455                                         } );
 456                                         widget.setIcon = widget.input.setIcon.bind( widget.input );
 457                                         widget.setIconTitle = widget.input.setIconTitle.bind( widget.input );
 458                                         widget.getValidity = widget.input.getValidity.bind( widget.input );
 459                                         widget.paramInfo = pi;
 460                                         $.extend( widget, WidgetMethods.textInputWidget );
 461                                         if ( Util.apiBool( pi.enforcerange ) ) {
 462                                                 widget.setRange( pi.min || -Infinity, pi.max || Infinity );
 463                                         }
 464                                         multiModeAllowed = true;
 465                                         multiModeInput = widget;
 466                                         break;
 467
 468                                 case 'limit':
 469                                         widget = new OO.ui.TextInputWidget( {
 470                                                 required: Util.apiBool( pi.required )
 471                                         } );
 472                                         widget.setValidation( function ( value ) {
 473                                                 var n, pi = this.paramInfo;
 474
 475                                                 if ( value === 'max' ) {
 476                                                         return true;
 477                                                 } else {
 478                                                         n = +value;
 479                                                         return !isNaN( n ) && isFinite( n ) &&
 480                                                                 Math.floor( n ) === n &&
 481                                                                 n >= pi.min && n <= pi.apiSandboxMax;
 482                                                 }
 483                                         } );
 484                                         pi.min = pi.min || 0;
 485                                         pi.apiSandboxMax = mw.config.get( 'apihighlimits' ) ? pi.highmax : pi.max;
 486                                         widget.paramInfo = pi;
 487                                         $.extend( widget, WidgetMethods.textInputWidget );
 488                                         multiModeAllowed = true;
 489                                         multiModeInput = widget;
 490                                         break;
 491
 492                                 case 'timestamp':
 493                                         widget = new mw.widgets.datetime.DateTimeInputWidget( {
 494                                                 formatter: {
 495                                                         format: '${year|0}-${month|0}-${day|0}T${hour|0}:${minute|0}:${second|0}${zone|short}'
 496                                                 },
 497                                                 required: Util.apiBool( pi.required ),
 498                                                 clearable: false
 499                                         } );
 500                                         widget.paramInfo = pi;
 501                                         $.extend( widget, WidgetMethods.textInputWidget );
 502                                         $.extend( widget, WidgetMethods.dateTimeInputWidget );
 503                                         multiModeAllowed = true;
 504                                         break;
 505
 506                                 case 'upload':
 507                                         widget = new OO.ui.SelectFileWidget();
 508                                         widget.paramInfo = pi;
 509                                         $.extend( widget, WidgetMethods.uploadWidget );
 510                                         break;
 511
 512                                 case 'namespace':
 513                                         items = $.map( mw.config.get( 'wgFormattedNamespaces' ), function ( name, ns ) {
 514                                                 if ( ns === '0' ) {
 515                                                         name = mw.message( 'blanknamespace' ).text();
 516                                                 }
 517                                                 return new OO.ui.MenuOptionWidget( { data: ns, label: name } );
 518                                         } ).sort( function ( a, b ) {
 519                                                 return a.data - b.data;
 520                                         } );
 521                                         if ( Util.apiBool( pi.multi ) ) {
 522                                                 if ( pi.allspecifier !== undefined ) {
 523                                                         items.unshift( new OO.ui.MenuOptionWidget( {
 524                                                                 data: pi.allspecifier,
 525                                                                 label: mw.message( 'apisandbox-multivalue-all-namespaces', pi.allspecifier ).text()
 526                                                         } ) );
 527                                                 }
 528
 529                                                 widget = new OO.ui.MenuTagMultiselectWidget( {
 530                                                         menu: { items: items },
 531                                                         $overlay: true
 532                                                 } );
 533                                                 widget.paramInfo = pi;
 534                                                 $.extend( widget, WidgetMethods.tagWidget );
 535                                         } else {
 536                                                 widget = new OO.ui.DropdownWidget( {
 537                                                         menu: { items: items },
 538                                                         $overlay: true
 539                                                 } );
 540                                                 widget.paramInfo = pi;
 541                                                 $.extend( widget, WidgetMethods.dropdownWidget );
 542                                         }
 543                                         break;
 544
 545                                 default:
 546                                         if ( !Array.isArray( pi.type ) ) {
 547                                                 throw new Error( 'Unknown parameter type ' + pi.type );
 548                                         }
 549
 550                                         items = pi.type.map( function ( v ) {
 551                                                 var config = {
 552                                                         data: String( v ),
 553                                                         label: String( v ),
 554                                                         classes: []
 555                                                 };
 556                                                 if ( pi.deprecatedvalues && pi.deprecatedvalues.indexOf( v ) >= 0 ) {
 557                                                         config.classes.push( 'apihelp-deprecated-value' );
 558                                                 }
 559                                                 return new OO.ui.MenuOptionWidget( config );
 560                                         } );
 561                                         if ( Util.apiBool( pi.multi ) ) {
 562                                                 if ( pi.allspecifier !== undefined ) {
 563                                                         items.unshift( new OO.ui.MenuOptionWidget( {
 564                                                                 data: pi.allspecifier,
 565                                                                 label: mw.message( 'apisandbox-multivalue-all-values', pi.allspecifier ).text()
 566                                                         } ) );
 567                                                 }
 568
 569                                                 widget = new OO.ui.MenuTagMultiselectWidget( {
 570                                                         menu: { items: items },
 571                                                         $overlay: true
 572                                                 } );
 573                                                 widget.paramInfo = pi;
 574                                                 $.extend( widget, WidgetMethods.tagWidget );
 575                                                 if ( Util.apiBool( pi.submodules ) ) {
 576                                                         widget.getSubmodules = WidgetMethods.submoduleWidget.multi;
 577                                                         widget.on( 'change', ApiSandbox.updateUI );
 578                                                 }
 579                                         } else {
 580                                                 widget = new OO.ui.DropdownWidget( {
 581                                                         menu: { items: items },
 582                                                         $overlay: true
 583                                                 } );
 584                                                 widget.paramInfo = pi;
 585                                                 $.extend( widget, WidgetMethods.dropdownWidget );
 586                                                 if ( Util.apiBool( pi.submodules ) ) {
 587                                                         widget.getSubmodules = WidgetMethods.submoduleWidget.single;
 588                                                         widget.getMenu().on( 'select', ApiSandbox.updateUI );
 589                                                 }
 590                                                 if ( pi.deprecatedvalues ) {
 591                                                         widget.getMenu().on( 'select', function ( item ) {
 592                                                                 this.$element.toggleClass(
 593                                                                         'apihelp-deprecated-value',
 594                                                                         pi.deprecatedvalues.indexOf( item.data ) >= 0
 595                                                                 );
 596                                                         }, [], widget );
 597                                                 }
 598                                         }
 599
 600                                         break;
 601                         }
 602
 603                         if ( Util.apiBool( pi.multi ) && multiModeAllowed ) {
 604                                 innerWidget = widget;
 605
 606                                 multiModeButton = new OO.ui.ButtonWidget( {
 607                                         label: mw.message( 'apisandbox-add-multi' ).text()
 608                                 } );
 609                                 $content = innerWidget.$element.add( multiModeButton.$element );
 610
 611                                 widget = new OO.ui.PopupTagMultiselectWidget( {
 612                                         allowArbitrary: true,
 613                                         allowDuplicates: Util.apiBool( pi.allowsduplicates ),
 614                                         $overlay: true,
 615                                         popup: {
 616                                                 classes: [ 'mw-apisandbox-popup' ],
 617                                                 padded: true,
 618                                                 $content: $content
 619                                         }
 620                                 } );
 621                                 widget.paramInfo = pi;
 622                                 $.extend( widget, WidgetMethods.tagWidget );
 623
 624                                 func = function () {
 625                                         if ( !innerWidget.isDisabled() ) {
 626                                                 innerWidget.apiCheckValid().done( function ( ok ) {
 627                                                         if ( ok ) {
 628                                                                 widget.addTag( innerWidget.getApiValue() );
 629                                                                 innerWidget.setApiValue( undefined );
 630                                                         }
 631                                                 } );
 632                                                 return false;
 633                                         }
 634                                 };
 635
 636                                 if ( multiModeInput ) {
 637                                         multiModeInput.on( 'enter', func );
 638                                 }
 639                                 multiModeButton.on( 'click', func );
 640                         }
 641
 642                         if ( Util.apiBool( pi.required ) || opts.nooptional ) {
 643                                 finalWidget = widget;
 644                         } else {
 645                                 finalWidget = new OptionalWidget( widget );
 646                                 finalWidget.paramInfo = pi;
 647                                 $.extend( finalWidget, WidgetMethods.optionalWidget );
 648                                 if ( widget.getSubmodules ) {
 649                                         finalWidget.getSubmodules = widget.getSubmodules.bind( widget );
 650                                         finalWidget.on( 'disable', function () { setTimeout( ApiSandbox.updateUI ); } );
 651                                 }
 652                                 finalWidget.setDisabled( true );
 653                         }
 654
 655                         widget.setApiValue( pi[ 'default' ] );
 656
 657                         return finalWidget;
 658                 },
 659
 660                 /**
 661                  * Parse an HTML string and call Util.fixupHTML()
 662                  *
 663                  * @param {string} html HTML to parse
 664                  * @return {jQuery}
 665                  */
 666                 parseHTML: function ( html ) {
 667                         var $ret = $( $.parseHTML( html ) );
 668                         return Util.fixupHTML( $ret );
 669                 },
 670
 671                 /**
 672                  * Parse an i18n message and call Util.fixupHTML()
 673                  *
 674                  * @param {string} key Key of message to get
 675                  * @param {...Mixed} parameters Values for $N replacements
 676                  * @return {jQuery}
 677                  */
 678                 parseMsg: function () {
 679                         var $ret = mw.message.apply( mw.message, arguments ).parseDom();
 680                         return Util.fixupHTML( $ret );
 681                 },
 682
 683                 /**
 684                  * Fix HTML for ApiSandbox display
 685                  *
 686                  * Fixes are:
 687                  * - Add target="_blank" to any links
 688                  *
 689                  * @param {jQuery} $html DOM to process
 690                  * @return {jQuery}
 691                  */
 692                 fixupHTML: function ( $html ) {
 693                         $html.filter( 'a' ).add( $html.find( 'a' ) )
 694                                 .filter( '[href]:not([target])' )
 695                                 .attr( 'target', '_blank' );
 696                         return $html;
 697                 },
 698
 699                 /**
 700                  * Format a request and return a bunch of menu option widgets
 701                  *
 702                  * @param {Object} displayParams Query parameters, sanitized for display.
 703                  * @param {Object} rawParams Query parameters. You should probably use displayParams instead.
 704                  * @return {OO.ui.MenuOptionWidget[]} Each item's data should be an OO.ui.FieldLayout
 705                  */
 706                 formatRequest: function ( displayParams, rawParams ) {
 707                         var jsonInput,
 708                                 items = [
 709                                         new OO.ui.MenuOptionWidget( {
 710                                                 label: Util.parseMsg( 'apisandbox-request-format-url-label' ),
 711                                                 data: new OO.ui.FieldLayout(
 712                                                         new OO.ui.TextInputWidget( {
 713                                                                 readOnly: true,
 714                                                                 value: mw.util.wikiScript( 'api' ) + '?' + $.param( displayParams )
 715                                                         } ), {
 716                                                                 label: Util.parseMsg( 'apisandbox-request-url-label' )
 717                                                         }
 718                                                 )
 719                                         } ),
 720                                         new OO.ui.MenuOptionWidget( {
 721                                                 label: Util.parseMsg( 'apisandbox-request-format-json-label' ),
 722                                                 data: new OO.ui.FieldLayout(
 723                                                         jsonInput = new OO.ui.MultilineTextInputWidget( {
 724                                                                 classes: [ 'mw-apisandbox-textInputCode' ],
 725                                                                 readOnly: true,
 726                                                                 autosize: true,
 727                                                                 maxRows: 6,
 728                                                                 value: JSON.stringify( displayParams, null, '\t' )
 729                                                         } ), {
 730                                                                 label: Util.parseMsg( 'apisandbox-request-json-label' )
 731                                                         }
 732                                                 ).on( 'toggle', function ( visible ) {
 733                                                         if ( visible ) {
 734                                                                 // Call updatePosition instead of adjustSize
 735                                                                 // because the latter has weird caching
 736                                                                 // behavior and the former bypasses it.
 737                                                                 jsonInput.updatePosition();
 738                                                         }
 739                                                 } )
 740                                         } )
 741                                 ];
 742
 743                         mw.hook( 'apisandbox.formatRequest' ).fire( items, displayParams, rawParams );
 744
 745                         return items;
 746                 },
 747
 748                 /**
 749                  * Event handler for when formatDropdown's selection changes
 750                  */
 751                 onFormatDropdownChange: function () {
 752                         var i,
 753                                 menu = formatDropdown.getMenu(),
 754                                 items = menu.getItems(),
 755                                 selectedField = menu.findSelectedItem() ? menu.findSelectedItem().getData() : null;
 756
 757                         for ( i = 0; i < items.length; i++ ) {
 758                                 items[ i ].getData().toggle( items[ i ].getData() === selectedField );
 759                         }
 760                 }
 761         };
 762
 763         /**
 764         * Interface to ApiSandbox UI
 765         *
 766         * @class mw.special.ApiSandbox
 767         */
 768         ApiSandbox = {
 769                 /**
 770                  * Initialize the UI
 771                  *
 772                  * Automatically called on $.ready()
 773                  */
 774                 init: function () {
 775                         var $toolbar;
 776
 777                         $content = $( '#mw-apisandbox' );
 778
 779                         windowManager = new OO.ui.WindowManager();
 780                         $( 'body' ).append( windowManager.$element );
 781                         windowManager.addWindows( {
 782                                 errorAlert: new OO.ui.MessageDialog()
 783                         } );
 784
 785                         $toolbar = $( '<div>' )
 786                                 .addClass( 'mw-apisandbox-toolbar' )
 787                                 .append(
 788                                         new OO.ui.ButtonWidget( {
 789                                                 label: mw.message( 'apisandbox-submit' ).text(),
 790                                                 flags: [ 'primary', 'progressive' ]
 791                                         } ).on( 'click', ApiSandbox.sendRequest ).$element,
 792                                         new OO.ui.ButtonWidget( {
 793                                                 label: mw.message( 'apisandbox-reset' ).text(),
 794                                                 flags: 'destructive'
 795                                         } ).on( 'click', ApiSandbox.resetUI ).$element
 796                                 );
 797
 798                         booklet = new OO.ui.BookletLayout( {
 799                                 expanded: false,
 800                                 outlined: true,
 801                                 autoFocus: false
 802                         } );
 803
 804                         panel = new OO.ui.PanelLayout( {
 805                                 classes: [ 'mw-apisandbox-container' ],
 806                                 content: [ booklet ],
 807                                 expanded: false,
 808                                 framed: true
 809                         } );
 810
 811                         pages.main = new ApiSandbox.PageLayout( { key: 'main', path: 'main' } );
 812
 813                         // Parse the current hash string
 814                         if ( !ApiSandbox.loadFromHash() ) {
 815                                 ApiSandbox.updateUI();
 816                         }
 817
 818                         $( window ).on( 'hashchange', ApiSandbox.loadFromHash );
 819
 820                         $content
 821                                 .empty()
 822                                 .append( $( '<p>' ).append( Util.parseMsg( 'apisandbox-intro' ) ) )
 823                                 .append(
 824                                         $( '<div>' ).attr( 'id', 'mw-apisandbox-ui' )
 825                                                 .append( $toolbar )
 826                                                 .append( panel.$element )
 827                                 );
 828                 },
 829
 830                 /**
 831                  * Update the current query when the page hash changes
 832                  *
 833                  * @return {boolean} Successful
 834                  */
 835                 loadFromHash: function () {
 836                         var params, m, re,
 837                                 hash = location.hash;
 838
 839                         if ( oldhash === hash ) {
 840                                 return false;
 841                         }
 842                         oldhash = hash;
 843                         if ( hash === '' ) {
 844                                 return false;
 845                         }
 846
 847                         // I'm surprised this doesn't seem to exist in jQuery or mw.util.
 848                         params = {};
 849                         hash = hash.replace( /\+/g, '%20' );
 850                         re = /([^&=#]+)=?([^&#]*)/g;
 851                         while ( ( m = re.exec( hash ) ) ) {
 852                                 params[ decodeURIComponent( m[ 1 ] ) ] = decodeURIComponent( m[ 2 ] );
 853                         }
 854
 855                         ApiSandbox.updateUI( params );
 856                         return true;
 857                 },
 858
 859                 /**
 860                  * Update the pages in the booklet
 861                  *
 862                  * @param {Object} [params] Optional query parameters to load
 863                  */
 864                 updateUI: function ( params ) {
 865                         var i, page, subpages, j, removePages,
 866                                 addPages = [];
 867
 868                         if ( !$.isPlainObject( params ) ) {
 869                                 params = undefined;
 870                         }
 871
 872                         if ( updatingBooklet ) {
 873                                 return;
 874                         }
 875                         updatingBooklet = true;
 876                         try {
 877                                 if ( params !== undefined ) {
 878                                         pages.main.loadQueryParams( params );
 879                                 }
 880                                 addPages.push( pages.main );
 881                                 if ( resultPage !== null ) {
 882                                         addPages.push( resultPage );
 883                                 }
 884                                 pages.main.apiCheckValid();
 885
 886                                 i = 0;
 887                                 while ( addPages.length ) {
 888                                         page = addPages.shift();
 889                                         if ( bookletPages[ i ] !== page ) {
 890                                                 for ( j = i; j < bookletPages.length; j++ ) {
 891                                                         if ( bookletPages[ j ].getName() === page.getName() ) {
 892                                                                 bookletPages.splice( j, 1 );
 893                                                         }
 894                                                 }
 895                                                 bookletPages.splice( i, 0, page );
 896                                                 booklet.addPages( [ page ], i );
 897                                         }
 898                                         i++;
 899
 900                                         if ( page.getSubpages ) {
 901                                                 subpages = page.getSubpages();
 902                                                 for ( j = 0; j < subpages.length; j++ ) {
 903                                                         if ( !pages.hasOwnProperty( subpages[ j ].key ) ) {
 904                                                                 subpages[ j ].indentLevel = page.indentLevel + 1;
 905                                                                 pages[ subpages[ j ].key ] = new ApiSandbox.PageLayout( subpages[ j ] );
 906                                                         }
 907                                                         if ( params !== undefined ) {
 908                                                                 pages[ subpages[ j ].key ].loadQueryParams( params );
 909                                                         }
 910                                                         addPages.splice( j, 0, pages[ subpages[ j ].key ] );
 911                                                         pages[ subpages[ j ].key ].apiCheckValid();
 912                                                 }
 913                                         }
 914                                 }
 915
 916                                 if ( bookletPages.length > i ) {
 917                                         removePages = bookletPages.splice( i, bookletPages.length - i );
 918                                         booklet.removePages( removePages );
 919                                 }
 920
 921                                 if ( !booklet.getCurrentPageName() ) {
 922                                         booklet.selectFirstSelectablePage();
 923                                 }
 924                         } finally {
 925                                 updatingBooklet = false;
 926                         }
 927                 },
 928
 929                 /**
 930                  * Reset button handler
 931                  */
 932                 resetUI: function () {
 933                         suppressErrors = true;
 934                         pages = {
 935                                 main: new ApiSandbox.PageLayout( { key: 'main', path: 'main' } )
 936                         };
 937                         resultPage = null;
 938                         ApiSandbox.updateUI();
 939                 },
 940
 941                 /**
 942                  * Submit button handler
 943                  *
 944                  * @param {Object} [params] Use this set of params instead of those in the form fields.
 945                  *   The form fields will be updated to match.
 946                  */
 947                 sendRequest: function ( params ) {
 948                         var page, subpages, i, query, $result, $focus,
 949                                 progress, $progressText, progressLoading,
 950                                 deferreds = [],
 951                                 paramsAreForced = !!params,
 952                                 displayParams = {},
 953                                 tokenWidgets = [],
 954                                 checkPages = [ pages.main ];
 955
 956                         // Blur any focused widget before submit, because
 957                         // OO.ui.ButtonWidget doesn't take focus itself (T128054)
 958                         $focus = $( '#mw-apisandbox-ui' ).find( document.activeElement );
 959                         if ( $focus.length ) {
 960                                 $focus[ 0 ].blur();
 961                         }
 962
 963                         suppressErrors = false;
 964
 965                         // save widget state in params (or load from it if we are forced)
 966                         if ( paramsAreForced ) {
 967                                 ApiSandbox.updateUI( params );
 968                         }
 969                         params = {};
 970                         while ( checkPages.length ) {
 971                                 page = checkPages.shift();
 972                                 if ( page.tokenWidget ) {
 973                                         tokenWidgets.push( page.tokenWidget );
 974                                 }
 975                                 deferreds = deferreds.concat( page.apiCheckValid() );
 976                                 page.getQueryParams( params, displayParams );
 977                                 subpages = page.getSubpages();
 978                                 for ( i = 0; i < subpages.length; i++ ) {
 979                                         if ( pages.hasOwnProperty( subpages[ i ].key ) ) {
 980                                                 checkPages.push( pages[ subpages[ i ].key ] );
 981                                         }
 982                                 }
 983                         }
 984
 985                         if ( !paramsAreForced ) {
 986                                 // forced params means we are continuing a query; the base query should be preserved
 987                                 baseRequestParams = $.extend( {}, params );
 988                         }
 989
 990                         $.when.apply( $, deferreds ).done( function () {
 991                                 var formatItems, menu, selectedLabel, deferred, actions, errorCount;
 992
 993                                 // Count how many times `value` occurs in `array`.
 994                                 function countValues( value, array ) {
 995                                         var count, i;
 996                                         count = 0;
 997                                         for ( i = 0; i < array.length; i++ ) {
 998                                                 if ( array[ i ] === value ) {
 999                                                         count++;
1000                                                 }
1001                                         }
1002                                         return count;
1003                                 }
1004
1005                                 errorCount = countValues( false, arguments );
1006                                 if ( errorCount > 0 ) {
1007                                         actions = [
1008                                                 {
1009                                                         action: 'accept',
1010                                                         label: OO.ui.msg( 'ooui-dialog-process-dismiss' ),
1011                                                         flags: 'primary'
1012                                                 }
1013                                         ];
1014                                         if ( tokenWidgets.length ) {
1015                                                 // Check all token widgets' validity separately
1016                                                 deferred = $.when.apply( $, tokenWidgets.map( function ( w ) {
1017                                                         return w.apiCheckValid();
1018                                                 } ) );
1019
1020                                                 deferred.done( function () {
1021                                                         // If only the tokens are invalid, offer to fix them
1022                                                         var tokenErrorCount = countValues( false, arguments );
1023                                                         if ( tokenErrorCount === errorCount ) {
1024                                                                 delete actions[ 0 ].flags;
1025                                                                 actions.push( {
1026                                                                         action: 'fix',
1027                                                                         label: mw.message( 'apisandbox-results-fixtoken' ).text(),
1028                                                                         flags: 'primary'
1029                                                                 } );
1030                                                         }
1031                                                 } );
1032                                         } else {
1033                                                 deferred = $.Deferred().resolve();
1034                                         }
1035                                         deferred.always( function () {
1036                                                 windowManager.openWindow( 'errorAlert', {
1037                                                         title: Util.parseMsg( 'apisandbox-submit-invalid-fields-title' ),
1038                                                         message: Util.parseMsg( 'apisandbox-submit-invalid-fields-message' ),
1039                                                         actions: actions
1040                                                 } ).closed.then( function ( data ) {
1041                                                         if ( data && data.action === 'fix' ) {
1042                                                                 ApiSandbox.fixTokenAndResend();
1043                                                         }
1044                                                 } );
1045                                         } );
1046                                         return;
1047                                 }
1048
1049                                 query = $.param( displayParams );
1050
1051                                 formatItems = Util.formatRequest( displayParams, params );
1052
1053                                 // Force a 'fm' format with wrappedhtml=1, if available
1054                                 if ( params.format !== undefined ) {
1055                                         if ( availableFormats.hasOwnProperty( params.format + 'fm' ) ) {
1056                                                 params.format = params.format + 'fm';
1057                                         }
1058                                         if ( params.format.substr( -2 ) === 'fm' ) {
1059                                                 params.wrappedhtml = 1;
1060                                         }
1061                                 }
1062
1063                                 progressLoading = false;
1064                                 $progressText = $( '<span>' ).text( mw.message( 'apisandbox-sending-request' ).text() );
1065                                 progress = new OO.ui.ProgressBarWidget( {
1066                                         progress: false,
1067                                         $content: $progressText
1068                                 } );
1069
1070                                 $result = $( '<div>' )
1071                                         .append( progress.$element );
1072
1073                                 resultPage = page = new OO.ui.PageLayout( '|results|', { expanded: false } );
1074                                 page.setupOutlineItem = function () {
1075                                         this.outlineItem.setLabel( mw.message( 'apisandbox-results' ).text() );
1076                                 };
1077
1078                                 if ( !formatDropdown ) {
1079                                         formatDropdown = new OO.ui.DropdownWidget( {
1080                                                 menu: { items: [] },
1081                                                 $overlay: true
1082                                         } );
1083                                         formatDropdown.getMenu().on( 'select', Util.onFormatDropdownChange );
1084                                 }
1085
1086                                 menu = formatDropdown.getMenu();
1087                                 selectedLabel = menu.findSelectedItem() ? menu.findSelectedItem().getLabel() : '';
1088                                 if ( typeof selectedLabel !== 'string' ) {
1089                                         selectedLabel = selectedLabel.text();
1090                                 }
1091                                 menu.clearItems().addItems( formatItems );
1092                                 menu.chooseItem( menu.getItemFromLabel( selectedLabel ) || menu.findFirstSelectableItem() );
1093
1094                                 // Fire the event to update field visibilities
1095                                 Util.onFormatDropdownChange();
1096
1097                                 page.$element.empty()
1098                                         .append(
1099                                                 new OO.ui.FieldLayout(
1100                                                         formatDropdown, {
1101                                                                 label: Util.parseMsg( 'apisandbox-request-selectformat-label' )
1102                                                         }
1103                                                 ).$element,
1104                                                 formatItems.map( function ( item ) {
1105                                                         return item.getData().$element;
1106                                                 } ),
1107                                                 $result
1108                                         );
1109                                 ApiSandbox.updateUI();
1110                                 booklet.setPage( '|results|' );
1111
1112                                 location.href = oldhash = '#' + query;
1113
1114                                 api.post( params, {
1115                                         contentType: 'multipart/form-data',
1116                                         dataType: 'text',
1117                                         xhr: function () {
1118                                                 var xhr = new window.XMLHttpRequest();
1119                                                 xhr.upload.addEventListener( 'progress', function ( e ) {
1120                                                         if ( !progressLoading ) {
1121                                                                 if ( e.lengthComputable ) {
1122                                                                         progress.setProgress( e.loaded * 100 / e.total );
1123                                                                 } else {
1124                                                                         progress.setProgress( false );
1125                                                                 }
1126                                                         }
1127                                                 } );
1128                                                 xhr.addEventListener( 'progress', function ( e ) {
1129                                                         if ( !progressLoading ) {
1130                                                                 progressLoading = true;
1131                                                                 $progressText.text( mw.message( 'apisandbox-loading-results' ).text() );
1132                                                         }
1133                                                         if ( e.lengthComputable ) {
1134                                                                 progress.setProgress( e.loaded * 100 / e.total );
1135                                                         } else {
1136                                                                 progress.setProgress( false );
1137                                                         }
1138                                                 } );
1139                                                 return xhr;
1140                                         }
1141                                 } )
1142                                         .catch( function ( code, data, result, jqXHR ) {
1143                                                 var deferred = $.Deferred();
1144
1145                                                 if ( code !== 'http' ) {
1146                                                         // Not really an error, work around mw.Api thinking it is.
1147                                                         deferred.resolve( result, jqXHR );
1148                                                 } else {
1149                                                         // Just forward it.
1150                                                         deferred.reject.apply( deferred, arguments );
1151                                                 }
1152                                                 return deferred.promise();
1153                                         } )
1154                                         .then( function ( data, jqXHR ) {
1155                                                 var m, loadTime, button, clear,
1156                                                         ct = jqXHR.getResponseHeader( 'Content-Type' ),
1157                                                         loginSuppressed = jqXHR.getResponseHeader( 'MediaWiki-Login-Suppressed' ) || 'false';
1158
1159                                                 $result.empty();
1160                                                 if ( loginSuppressed !== 'false' ) {
1161                                                         $( '<div>' )
1162                                                                 .addClass( 'warning' )
1163                                                                 .append( Util.parseMsg( 'apisandbox-results-login-suppressed' ) )
1164                                                                 .appendTo( $result );
1165                                                 }
1166                                                 if ( /^text\/mediawiki-api-prettyprint-wrapped(?:;|$)/.test( ct ) ) {
1167                                                         data = JSON.parse( data );
1168                                                         if ( data.modules.length ) {
1169                                                                 mw.loader.load( data.modules );
1170                                                         }
1171                                                         if ( data.status && data.status !== 200 ) {
1172                                                                 $( '<div>' )
1173                                                                         .addClass( 'api-pretty-header api-pretty-status' )
1174                                                                         .append( Util.parseMsg( 'api-format-prettyprint-status', data.status, data.statustext ) )
1175                                                                         .appendTo( $result );
1176                                                         }
1177                                                         $result.append( Util.parseHTML( data.html ) );
1178                                                         loadTime = data.time;
1179                                                 } else if ( ( m = data.match( /<pre[ >][\s\S]*<\/pre>/ ) ) ) {
1180                                                         $result.append( Util.parseHTML( m[ 0 ] ) );
1181                                                         if ( ( m = data.match( /"wgBackendResponseTime":\s*(\d+)/ ) ) ) {
1182                                                                 loadTime = parseInt( m[ 1 ], 10 );
1183                                                         }
1184                                                 } else {
1185                                                         $( '<pre>' )
1186                                                                 .addClass( 'api-pretty-content' )
1187                                                                 .text( data )
1188                                                                 .appendTo( $result );
1189                                                 }
1190                                                 if ( paramsAreForced || data[ 'continue' ] ) {
1191                                                         $result.append(
1192                                                                 $( '<div>' ).append(
1193                                                                         new OO.ui.ButtonWidget( {
1194                                                                                 label: mw.message( 'apisandbox-continue' ).text()
1195                                                                         } ).on( 'click', function () {
1196                                                                                 ApiSandbox.sendRequest( $.extend( {}, baseRequestParams, data[ 'continue' ] ) );
1197                                                                         } ).setDisabled( !data[ 'continue' ] ).$element,
1198                                                                         ( clear = new OO.ui.ButtonWidget( {
1199                                                                                 label: mw.message( 'apisandbox-continue-clear' ).text()
1200                                                                         } ).on( 'click', function () {
1201                                                                                 ApiSandbox.updateUI( baseRequestParams );
1202                                                                                 clear.setDisabled( true );
1203                                                                                 booklet.setPage( '|results|' );
1204                                                                         } ).setDisabled( !paramsAreForced ) ).$element,
1205                                                                         new OO.ui.PopupButtonWidget( {
1206                                                                                 $overlay: true,
1207                                                                                 framed: false,
1208                                                                                 icon: 'info',
1209                                                                                 popup: {
1210                                                                                         $content: $( '<div>' ).append( Util.parseMsg( 'apisandbox-continue-help' ) ),
1211                                                                                         padded: true,
1212                                                                                         width: 'auto'
1213                                                                                 }
1214                                                                         } ).$element
1215                                                                 )
1216                                                         );
1217                                                 }
1218                                                 if ( typeof loadTime === 'number' ) {
1219                                                         $result.append(
1220                                                                 $( '<div>' ).append(
1221                                                                         new OO.ui.LabelWidget( {
1222                                                                                 label: mw.message( 'apisandbox-request-time', loadTime ).text()
1223                                                                         } ).$element
1224                                                                 )
1225                                                         );
1226                                                 }
1227
1228                                                 if ( jqXHR.getResponseHeader( 'MediaWiki-API-Error' ) === 'badtoken' ) {
1229                                                         // Flush all saved tokens in case one of them is the bad one.
1230                                                         Util.markTokensBad();
1231                                                         button = new OO.ui.ButtonWidget( {
1232                                                                 label: mw.message( 'apisandbox-results-fixtoken' ).text()
1233                                                         } );
1234                                                         button.on( 'click', ApiSandbox.fixTokenAndResend )
1235                                                                 .on( 'click', button.setDisabled, [ true ], button )
1236                                                                 .$element.appendTo( $result );
1237                                                 }
1238                                         }, function ( code, data ) {
1239                                                 var details = 'HTTP error: ' + data.exception;
1240                                                 $result.empty()
1241                                                         .append(
1242                                                                 new OO.ui.LabelWidget( {
1243                                                                         label: mw.message( 'apisandbox-results-error', details ).text(),
1244                                                                         classes: [ 'error' ]
1245                                                                 } ).$element
1246                                                         );
1247                                         } );
1248                         } );
1249                 },
1250
1251                 /**
1252                  * Handler for the "Correct token and resubmit" button
1253                  *
1254                  * Used on a 'badtoken' error, it re-fetches token parameters for all
1255                  * pages and then re-submits the query.
1256                  */
1257                 fixTokenAndResend: function () {
1258                         var page, subpages, i, k,
1259                                 ok = true,
1260                                 tokenWait = { dummy: true },
1261                                 checkPages = [ pages.main ],
1262                                 success = function ( k ) {
1263                                         delete tokenWait[ k ];
1264                                         if ( ok && $.isEmptyObject( tokenWait ) ) {
1265                                                 ApiSandbox.sendRequest();
1266                                         }
1267                                 },
1268                                 failure = function ( k ) {
1269                                         delete tokenWait[ k ];
1270                                         ok = false;
1271                                 };
1272
1273                         while ( checkPages.length ) {
1274                                 page = checkPages.shift();
1275
1276                                 if ( page.tokenWidget ) {
1277                                         k = page.apiModule + page.tokenWidget.paramInfo.name;
1278                                         tokenWait[ k ] = page.tokenWidget.fetchToken();
1279                                         tokenWait[ k ]
1280                                                 .done( success.bind( page.tokenWidget, k ) )
1281                                                 .fail( failure.bind( page.tokenWidget, k ) );
1282                                 }
1283
1284                                 subpages = page.getSubpages();
1285                                 for ( i = 0; i < subpages.length; i++ ) {
1286                                         if ( pages.hasOwnProperty( subpages[ i ].key ) ) {
1287                                                 checkPages.push( pages[ subpages[ i ].key ] );
1288                                         }
1289                                 }
1290                         }
1291
1292                         success( 'dummy', '' );
1293                 },
1294
1295                 /**
1296                  * Reset validity indicators for all widgets
1297                  */
1298                 updateValidityIndicators: function () {
1299                         var page, subpages, i,
1300                                 checkPages = [ pages.main ];
1301
1302                         while ( checkPages.length ) {
1303                                 page = checkPages.shift();
1304                                 page.apiCheckValid();
1305                                 subpages = page.getSubpages();
1306                                 for ( i = 0; i < subpages.length; i++ ) {
1307                                         if ( pages.hasOwnProperty( subpages[ i ].key ) ) {
1308                                                 checkPages.push( pages[ subpages[ i ].key ] );
1309                                         }
1310                                 }
1311                         }
1312                 }
1313         };
1314
1315         /**
1316          * PageLayout for API modules
1317          *
1318          * @class
1319          * @private
1320          * @extends OO.ui.PageLayout
1321          * @constructor
1322          * @param {Object} [config] Configuration options
1323          */
1324         ApiSandbox.PageLayout = function ( config ) {
1325                 config = $.extend( { prefix: '', expanded: false }, config );
1326                 this.displayText = config.key;
1327                 this.apiModule = config.path;
1328                 this.prefix = config.prefix;
1329                 this.paramInfo = null;
1330                 this.apiIsValid = true;
1331                 this.loadFromQueryParams = null;
1332                 this.widgets = {};
1333                 this.tokenWidget = null;
1334                 this.indentLevel = config.indentLevel ? config.indentLevel : 0;
1335                 ApiSandbox.PageLayout[ 'super' ].call( this, config.key, config );
1336                 this.loadParamInfo();
1337         };
1338         OO.inheritClass( ApiSandbox.PageLayout, OO.ui.PageLayout );
1339         ApiSandbox.PageLayout.prototype.setupOutlineItem = function () {
1340                 this.outlineItem.setLevel( this.indentLevel );
1341                 this.outlineItem.setLabel( this.displayText );
1342                 this.outlineItem.setIcon( this.apiIsValid || suppressErrors ? null : 'alert' );
1343                 this.outlineItem.setIconTitle(
1344                         this.apiIsValid || suppressErrors ? '' : mw.message( 'apisandbox-alert-page' ).plain()
1345                 );
1346         };
1347
1348         /**
1349          * Fetch module information for this page's module, then create UI
1350          */
1351         ApiSandbox.PageLayout.prototype.loadParamInfo = function () {
1352                 var dynamicFieldset, dynamicParamNameWidget,
1353                         that = this,
1354                         removeDynamicParamWidget = function ( name, layout ) {
1355                                 dynamicFieldset.removeItems( [ layout ] );
1356                                 delete that.widgets[ name ];
1357                         },
1358                         addDynamicParamWidget = function () {
1359                                 var name, layout, widget, button;
1360
1361                                 // Check name is filled in
1362                                 name = dynamicParamNameWidget.getValue().trim();
1363                                 if ( name === '' ) {
1364                                         dynamicParamNameWidget.focus();
1365                                         return;
1366                                 }
1367
1368                                 if ( that.widgets[ name ] !== undefined ) {
1369                                         windowManager.openWindow( 'errorAlert', {
1370                                                 title: Util.parseMsg( 'apisandbox-dynamic-error-exists', name ),
1371                                                 actions: [
1372                                                         {
1373                                                                 action: 'accept',
1374                                                                 label: OO.ui.msg( 'ooui-dialog-process-dismiss' ),
1375                                                                 flags: 'primary'
1376                                                         }
1377                                                 ]
1378                                         } );
1379                                         return;
1380                                 }
1381
1382                                 widget = Util.createWidgetForParameter( {
1383                                         name: name,
1384                                         type: 'string',
1385                                         'default': ''
1386                                 }, {
1387                                         nooptional: true
1388                                 } );
1389                                 button = new OO.ui.ButtonWidget( {
1390                                         icon: 'trash',
1391                                         flags: 'destructive'
1392                                 } );
1393                                 layout = new OO.ui.ActionFieldLayout(
1394                                         widget,
1395                                         button,
1396                                         {
1397                                                 label: name,
1398                                                 align: 'left'
1399                                         }
1400                                 );
1401                                 button.on( 'click', removeDynamicParamWidget, [ name, layout ] );
1402                                 that.widgets[ name ] = widget;
1403                                 dynamicFieldset.addItems( [ layout ], dynamicFieldset.getItems().length - 1 );
1404                                 widget.focus();
1405
1406                                 dynamicParamNameWidget.setValue( '' );
1407                         };
1408
1409                 this.$element.empty()
1410                         .append( new OO.ui.ProgressBarWidget( {
1411                                 progress: false,
1412                                 text: mw.message( 'apisandbox-loading', this.displayText ).text()
1413                         } ).$element );
1414
1415                 Util.fetchModuleInfo( this.apiModule )
1416                         .done( function ( pi ) {
1417                                 var prefix, i, j, descriptionContainer, widget, layoutConfig, button, widgetField, helpField, tmp, flag, count,
1418                                         items = [],
1419                                         deprecatedItems = [],
1420                                         buttons = [],
1421                                         filterFmModules = function ( v ) {
1422                                                 return v.substr( -2 ) !== 'fm' ||
1423                                                         !availableFormats.hasOwnProperty( v.substr( 0, v.length - 2 ) );
1424                                         },
1425                                         widgetLabelOnClick = function () {
1426                                                 var f = this.getField();
1427                                                 if ( $.isFunction( f.setDisabled ) ) {
1428                                                         f.setDisabled( false );
1429                                                 }
1430                                                 if ( $.isFunction( f.focus ) ) {
1431                                                         f.focus();
1432                                                 }
1433                                         };
1434
1435                                 // This is something of a hack. We always want the 'format' and
1436                                 // 'action' parameters from the main module to be specified,
1437                                 // and for 'format' we also want to simplify the dropdown since
1438                                 // we always send the 'fm' variant.
1439                                 if ( that.apiModule === 'main' ) {
1440                                         for ( i = 0; i < pi.parameters.length; i++ ) {
1441                                                 if ( pi.parameters[ i ].name === 'action' ) {
1442                                                         pi.parameters[ i ].required = true;
1443                                                         delete pi.parameters[ i ][ 'default' ];
1444                                                 }
1445                                                 if ( pi.parameters[ i ].name === 'format' ) {
1446                                                         tmp = pi.parameters[ i ].type;
1447                                                         for ( j = 0; j < tmp.length; j++ ) {
1448                                                                 availableFormats[ tmp[ j ] ] = true;
1449                                                         }
1450                                                         pi.parameters[ i ].type = tmp.filter( filterFmModules );
1451                                                         pi.parameters[ i ][ 'default' ] = 'json';
1452                                                         pi.parameters[ i ].required = true;
1453                                                 }
1454                                         }
1455                                 }
1456
1457                                 // Hide the 'wrappedhtml' parameter on format modules
1458                                 if ( pi.group === 'format' ) {
1459                                         pi.parameters = pi.parameters.filter( function ( p ) {
1460                                                 return p.name !== 'wrappedhtml';
1461                                         } );
1462                                 }
1463
1464                                 that.paramInfo = pi;
1465
1466                                 items.push( new OO.ui.FieldLayout(
1467                                         new OO.ui.Widget( {} ).toggle( false ), {
1468                                                 align: 'top',
1469                                                 label: Util.parseHTML( pi.description )
1470                                         }
1471                                 ) );
1472
1473                                 if ( pi.helpurls.length ) {
1474                                         buttons.push( new OO.ui.PopupButtonWidget( {
1475                                                 $overlay: true,
1476                                                 label: mw.message( 'apisandbox-helpurls' ).text(),
1477                                                 icon: 'help',
1478                                                 popup: {
1479                                                         width: 'auto',
1480                                                         padded: true,
1481                                                         $content: $( '<ul>' ).append( pi.helpurls.map( function ( link ) {
1482                                                                 return $( '<li>' ).append( $( '<a>' )
1483                                                                         .attr( { href: link, target: '_blank' } )
1484                                                                         .text( link )
1485                                                                 );
1486                                                         } ) )
1487                                                 }
1488                                         } ) );
1489                                 }
1490
1491                                 if ( pi.examples.length ) {
1492                                         buttons.push( new OO.ui.PopupButtonWidget( {
1493                                                 $overlay: true,
1494                                                 label: mw.message( 'apisandbox-examples' ).text(),
1495                                                 icon: 'code',
1496                                                 popup: {
1497                                                         width: 'auto',
1498                                                         padded: true,
1499                                                         $content: $( '<ul>' ).append( pi.examples.map( function ( example ) {
1500                                                                 var a = $( '<a>' )
1501                                                                         .attr( 'href', '#' + example.query )
1502                                                                         .html( example.description );
1503                                                                 a.find( 'a' ).contents().unwrap(); // Can't nest links
1504                                                                 return $( '<li>' ).append( a );
1505                                                         } ) )
1506                                                 }
1507                                         } ) );
1508                                 }
1509
1510                                 if ( buttons.length ) {
1511                                         items.push( new OO.ui.FieldLayout(
1512                                                 new OO.ui.ButtonGroupWidget( {
1513                                                         items: buttons
1514                                                 } ), { align: 'top' }
1515                                         ) );
1516                                 }
1517
1518                                 if ( pi.parameters.length ) {
1519                                         prefix = that.prefix + pi.prefix;
1520                                         for ( i = 0; i < pi.parameters.length; i++ ) {
1521                                                 widget = Util.createWidgetForParameter( pi.parameters[ i ] );
1522                                                 that.widgets[ prefix + pi.parameters[ i ].name ] = widget;
1523                                                 if ( pi.parameters[ i ].tokentype ) {
1524                                                         that.tokenWidget = widget;
1525                                                 }
1526
1527                                                 descriptionContainer = $( '<div>' );
1528
1529                                                 tmp = Util.parseHTML( pi.parameters[ i ].description );
1530                                                 tmp.filter( 'dl' ).makeCollapsible( {
1531                                                         collapsed: true
1532                                                 } ).children( '.mw-collapsible-toggle' ).each( function () {
1533                                                         var $this = $( this );
1534                                                         $this.parent().prev( 'p' ).append( $this );
1535                                                 } );
1536                                                 descriptionContainer.append( $( '<div>' ).addClass( 'description' ).append( tmp ) );
1537
1538                                                 if ( pi.parameters[ i ].info && pi.parameters[ i ].info.length ) {
1539                                                         for ( j = 0; j < pi.parameters[ i ].info.length; j++ ) {
1540                                                                 descriptionContainer.append( $( '<div>' )
1541                                                                         .addClass( 'info' )
1542                                                                         .append( Util.parseHTML( pi.parameters[ i ].info[ j ] ) )
1543                                                                 );
1544                                                         }
1545                                                 }
1546                                                 flag = true;
1547                                                 count = 1e100;
1548                                                 switch ( pi.parameters[ i ].type ) {
1549                                                         case 'namespace':
1550                                                                 flag = false;
1551                                                                 count = mw.config.get( 'wgFormattedNamespaces' ).length;
1552                                                                 break;
1553
1554                                                         case 'limit':
1555                                                                 if ( pi.parameters[ i ].highmax !== undefined ) {
1556                                                                         descriptionContainer.append( $( '<div>' )
1557                                                                                 .addClass( 'info' )
1558                                                                                 .append(
1559                                                                                         Util.parseMsg(
1560                                                                                                 'api-help-param-limit2', pi.parameters[ i ].max, pi.parameters[ i ].highmax
1561                                                                                         ),
1562                                                                                         ' ',
1563                                                                                         Util.parseMsg( 'apisandbox-param-limit' )
1564                                                                                 )
1565                                                                         );
1566                                                                 } else {
1567                                                                         descriptionContainer.append( $( '<div>' )
1568                                                                                 .addClass( 'info' )
1569                                                                                 .append(
1570                                                                                         Util.parseMsg( 'api-help-param-limit', pi.parameters[ i ].max ),
1571                                                                                         ' ',
1572                                                                                         Util.parseMsg( 'apisandbox-param-limit' )
1573                                                                                 )
1574                                                                         );
1575                                                                 }
1576                                                                 break;
1577
1578                                                         case 'integer':
1579                                                                 tmp = '';
1580                                                                 if ( pi.parameters[ i ].min !== undefined ) {
1581                                                                         tmp += 'min';
1582                                                                 }
1583                                                                 if ( pi.parameters[ i ].max !== undefined ) {
1584                                                                         tmp += 'max';
1585                                                                 }
1586                                                                 if ( tmp !== '' ) {
1587                                                                         descriptionContainer.append( $( '<div>' )
1588                                                                                 .addClass( 'info' )
1589                                                                                 .append( Util.parseMsg(
1590                                                                                         'api-help-param-integer-' + tmp,
1591                                                                                         Util.apiBool( pi.parameters[ i ].multi ) ? 2 : 1,
1592                                                                                         pi.parameters[ i ].min, pi.parameters[ i ].max
1593                                                                                 ) )
1594                                                                         );
1595                                                                 }
1596                                                                 break;
1597
1598                                                         default:
1599                                                                 if ( Array.isArray( pi.parameters[ i ].type ) ) {
1600                                                                         flag = false;
1601                                                                         count = pi.parameters[ i ].type.length;
1602                                                                 }
1603                                                                 break;
1604                                                 }
1605                                                 if ( Util.apiBool( pi.parameters[ i ].multi ) ) {
1606                                                         tmp = [];
1607                                                         if ( flag && !( widget instanceof OO.ui.TagMultiselectWidget ) &&
1608                                                                 !(
1609                                                                         widget instanceof OptionalWidget &&
1610                                                                         widget.widget instanceof OO.ui.TagMultiselectWidget
1611                                                                 )
1612                                                         ) {
1613                                                                 tmp.push( mw.message( 'api-help-param-multi-separate' ).parse() );
1614                                                         }
1615                                                         if ( count > pi.parameters[ i ].lowlimit ) {
1616                                                                 tmp.push(
1617                                                                         mw.message( 'api-help-param-multi-max',
1618                                                                                 pi.parameters[ i ].lowlimit, pi.parameters[ i ].highlimit
1619                                                                         ).parse()
1620                                                                 );
1621                                                         }
1622                                                         if ( tmp.length ) {
1623                                                                 descriptionContainer.append( $( '<div>' )
1624                                                                         .addClass( 'info' )
1625                                                                         .append( Util.parseHTML( tmp.join( ' ' ) ) )
1626                                                                 );
1627                                                         }
1628                                                 }
1629                                                 if ( 'maxbytes' in pi.parameters[ i ] ) {
1630                                                         descriptionContainer.append( $( '<div>' )
1631                                                                 .addClass( 'info' )
1632                                                                 .append( Util.parseMsg( 'api-help-param-maxbytes', pi.parameters[ i ].maxbytes ) )
1633                                                         );
1634                                                 }
1635                                                 if ( 'maxchars' in pi.parameters[ i ] ) {
1636                                                         descriptionContainer.append( $( '<div>' )
1637                                                                 .addClass( 'info' )
1638                                                                 .append( Util.parseMsg( 'api-help-param-maxchars', pi.parameters[ i ].maxchars ) )
1639                                                         );
1640                                                 }
1641                                                 helpField = new OO.ui.FieldLayout(
1642                                                         new OO.ui.Widget( {
1643                                                                 $content: '\xa0',
1644                                                                 classes: [ 'mw-apisandbox-spacer' ]
1645                                                         } ), {
1646                                                                 align: 'inline',
1647                                                                 classes: [ 'mw-apisandbox-help-field' ],
1648                                                                 label: descriptionContainer
1649                                                         }
1650                                                 );
1651
1652                                                 layoutConfig = {
1653                                                         align: 'left',
1654                                                         classes: [ 'mw-apisandbox-widget-field' ],
1655                                                         label: prefix + pi.parameters[ i ].name
1656                                                 };
1657
1658                                                 if ( pi.parameters[ i ].tokentype ) {
1659                                                         button = new OO.ui.ButtonWidget( {
1660                                                                 label: mw.message( 'apisandbox-fetch-token' ).text()
1661                                                         } );
1662                                                         button.on( 'click', widget.fetchToken, [], widget );
1663
1664                                                         widgetField = new OO.ui.ActionFieldLayout( widget, button, layoutConfig );
1665                                                 } else {
1666                                                         widgetField = new OO.ui.FieldLayout( widget, layoutConfig );
1667                                                 }
1668
1669                                                 // We need our own click handler on the widget label to
1670                                                 // turn off the disablement.
1671                                                 widgetField.$label.on( 'click', widgetLabelOnClick.bind( widgetField ) );
1672
1673                                                 // Don't grey out the label when the field is disabled,
1674                                                 // it makes it too hard to read and our "disabled"
1675                                                 // isn't really disabled.
1676                                                 widgetField.onFieldDisable( false );
1677                                                 widgetField.onFieldDisable = $.noop;
1678
1679                                                 if ( Util.apiBool( pi.parameters[ i ].deprecated ) ) {
1680                                                         deprecatedItems.push( widgetField, helpField );
1681                                                 } else {
1682                                                         items.push( widgetField, helpField );
1683                                                 }
1684                                         }
1685                                 }
1686
1687                                 if ( !pi.parameters.length && !Util.apiBool( pi.dynamicparameters ) ) {
1688                                         items.push( new OO.ui.FieldLayout(
1689                                                 new OO.ui.Widget( {} ).toggle( false ), {
1690                                                         align: 'top',
1691                                                         label: Util.parseMsg( 'apisandbox-no-parameters' )
1692                                                 }
1693                                         ) );
1694                                 }
1695
1696                                 that.$element.empty();
1697
1698                                 new OO.ui.FieldsetLayout( {
1699                                         label: that.displayText
1700                                 } ).addItems( items )
1701                                         .$element.appendTo( that.$element );
1702
1703                                 if ( Util.apiBool( pi.dynamicparameters ) ) {
1704                                         dynamicFieldset = new OO.ui.FieldsetLayout();
1705                                         dynamicParamNameWidget = new OO.ui.TextInputWidget( {
1706                                                 placeholder: mw.message( 'apisandbox-dynamic-parameters-add-placeholder' ).text()
1707                                         } ).on( 'enter', addDynamicParamWidget );
1708                                         dynamicFieldset.addItems( [
1709                                                 new OO.ui.FieldLayout(
1710                                                         new OO.ui.Widget( {} ).toggle( false ), {
1711                                                                 align: 'top',
1712                                                                 label: Util.parseHTML( pi.dynamicparameters )
1713                                                         }
1714                                                 ),
1715                                                 new OO.ui.ActionFieldLayout(
1716                                                         dynamicParamNameWidget,
1717                                                         new OO.ui.ButtonWidget( {
1718                                                                 icon: 'add',
1719                                                                 flags: 'progressive'
1720                                                         } ).on( 'click', addDynamicParamWidget ),
1721                                                         {
1722                                                                 label: mw.message( 'apisandbox-dynamic-parameters-add-label' ).text(),
1723                                                                 align: 'left'
1724                                                         }
1725                                                 )
1726                                         ] );
1727                                         $( '<fieldset>' )
1728                                                 .append(
1729                                                         $( '<legend>' ).text( mw.message( 'apisandbox-dynamic-parameters' ).text() ),
1730                                                         dynamicFieldset.$element
1731                                                 )
1732                                                 .appendTo( that.$element );
1733                                 }
1734
1735                                 if ( deprecatedItems.length ) {
1736                                         tmp = new OO.ui.FieldsetLayout().addItems( deprecatedItems ).toggle( false );
1737                                         $( '<fieldset>' )
1738                                                 .append(
1739                                                         $( '<legend>' ).append(
1740                                                                 new OO.ui.ToggleButtonWidget( {
1741                                                                         label: mw.message( 'apisandbox-deprecated-parameters' ).text()
1742                                                                 } ).on( 'change', tmp.toggle, [], tmp ).$element
1743                                                         ),
1744                                                         tmp.$element
1745                                                 )
1746                                                 .appendTo( that.$element );
1747                                 }
1748
1749                                 // Load stored params, if any, then update the booklet if we
1750                                 // have subpages (or else just update our valid-indicator).
1751                                 tmp = that.loadFromQueryParams;
1752                                 that.loadFromQueryParams = null;
1753                                 if ( $.isPlainObject( tmp ) ) {
1754                                         that.loadQueryParams( tmp );
1755                                 }
1756                                 if ( that.getSubpages().length > 0 ) {
1757                                         ApiSandbox.updateUI( tmp );
1758                                 } else {
1759                                         that.apiCheckValid();
1760                                 }
1761                         } ).fail( function ( code, detail ) {
1762                                 that.$element.empty()
1763                                         .append(
1764                                                 new OO.ui.LabelWidget( {
1765                                                         label: mw.message( 'apisandbox-load-error', that.apiModule, detail ).text(),
1766                                                         classes: [ 'error' ]
1767                                                 } ).$element,
1768                                                 new OO.ui.ButtonWidget( {
1769                                                         label: mw.message( 'apisandbox-retry' ).text()
1770                                                 } ).on( 'click', that.loadParamInfo, [], that ).$element
1771                                         );
1772                         } );
1773         };
1774
1775         /**
1776          * Check that all widgets on the page are in a valid state.
1777          *
1778          * @return {jQuery.Promise[]} One promise for each widget, resolved with `false` if invalid
1779          */
1780         ApiSandbox.PageLayout.prototype.apiCheckValid = function () {
1781                 var promises, that = this;
1782
1783                 if ( this.paramInfo === null ) {
1784                         return [];
1785                 } else {
1786                         promises = $.map( this.widgets, function ( widget ) {
1787                                 return widget.apiCheckValid();
1788                         } );
1789                         $.when.apply( $, promises ).then( function () {
1790                                 that.apiIsValid = $.inArray( false, arguments ) === -1;
1791                                 if ( that.getOutlineItem() ) {
1792                                         that.getOutlineItem().setIcon( that.apiIsValid || suppressErrors ? null : 'alert' );
1793                                         that.getOutlineItem().setIconTitle(
1794                                                 that.apiIsValid || suppressErrors ? '' : mw.message( 'apisandbox-alert-page' ).plain()
1795                                         );
1796                                 }
1797                         } );
1798                         return promises;
1799                 }
1800         };
1801
1802         /**
1803          * Load form fields from query parameters
1804          *
1805          * @param {Object} params
1806          */
1807         ApiSandbox.PageLayout.prototype.loadQueryParams = function ( params ) {
1808                 if ( this.paramInfo === null ) {
1809                         this.loadFromQueryParams = params;
1810                 } else {
1811                         $.each( this.widgets, function ( name, widget ) {
1812                                 var v = params.hasOwnProperty( name ) ? params[ name ] : undefined;
1813                                 widget.setApiValue( v );
1814                         } );
1815                 }
1816         };
1817
1818         /**
1819          * Load query params from form fields
1820          *
1821          * @param {Object} params Write query parameters into this object
1822          * @param {Object} displayParams Write query parameters for display into this object
1823          */
1824         ApiSandbox.PageLayout.prototype.getQueryParams = function ( params, displayParams ) {
1825                 $.each( this.widgets, function ( name, widget ) {
1826                         var value = widget.getApiValue();
1827                         if ( value !== undefined ) {
1828                                 params[ name ] = value;
1829                                 if ( $.isFunction( widget.getApiValueForDisplay ) ) {
1830                                         value = widget.getApiValueForDisplay();
1831                                 }
1832                                 displayParams[ name ] = value;
1833                         }
1834                 } );
1835         };
1836
1837         /**
1838          * Fetch a list of subpage names loaded by this page
1839          *
1840          * @return {Array}
1841          */
1842         ApiSandbox.PageLayout.prototype.getSubpages = function () {
1843                 var ret = [];
1844                 $.each( this.widgets, function ( name, widget ) {
1845                         var submodules, i;
1846                         if ( $.isFunction( widget.getSubmodules ) ) {
1847                                 submodules = widget.getSubmodules();
1848                                 for ( i = 0; i < submodules.length; i++ ) {
1849                                         ret.push( {
1850                                                 key: name + '=' + submodules[ i ].value,
1851                                                 path: submodules[ i ].path,
1852                                                 prefix: widget.paramInfo.submoduleparamprefix || ''
1853                                         } );
1854                                 }
1855                         }
1856                 } );
1857                 return ret;
1858         };
1859
1860         $( ApiSandbox.init );
1861
1862         module.exports = ApiSandbox;
1863
1864 }( jQuery, mediaWiki, OO ) );