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

   1 ( function ( $, mw, OO ) {
   2         'use strict';
   3         var ApiSandbox, Util, WidgetMethods, Validators,
   4                 $content, panel, booklet, oldhash, windowManager, fullscreenButton,
   5                 formatDropdown,
   6                 api = new mw.Api(),
   7                 bookletPages = [],
   8                 availableFormats = {},
   9                 resultPage = null,
  10                 suppressErrors = true,
  11                 updatingBooklet = false,
  12                 pages = {},
  13                 moduleInfoCache = {},
  14                 baseRequestParams;
  15
  16         /**
  17          * A wrapper for a widget that provides an enable/disable button
  18          *
  19          * @class
  20          * @private
  21          * @constructor
  22          * @param {OO.ui.Widget} widget
  23          * @param {Object} [config] Configuration options
  24          */
  25         function OptionalWidget( widget, config ) {
  26                 var k;
  27
  28                 config = config || {};
  29
  30                 this.widget = widget;
  31                 this.$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, $button, $content, func,
 388                                 multiMode = 'none';
 389
 390                         opts = opts || {};
 391
 392                         switch ( pi.type ) {
 393                                 case 'boolean':
 394                                         widget = new OO.ui.ToggleSwitchWidget();
 395                                         widget.paramInfo = pi;
 396                                         $.extend( widget, WidgetMethods.toggleSwitchWidget );
 397                                         pi.required = true; // Avoid wrapping in the non-required widget
 398                                         break;
 399
 400                                 case 'string':
 401                                 case 'user':
 402                                         if ( Util.apiBool( pi.multi ) ) {
 403                                                 widget = new OO.ui.TagMultiselectWidget( {
 404                                                         allowArbitrary: true,
 405                                                         allowDuplicates: Util.apiBool( pi.allowsduplicates ),
 406                                                         $overlay: true
 407                                                 } );
 408                                                 widget.paramInfo = pi;
 409                                                 $.extend( widget, WidgetMethods.tagWidget );
 410                                         } else {
 411                                                 widget = new OO.ui.TextInputWidget( {
 412                                                         required: Util.apiBool( pi.required )
 413                                                 } );
 414                                         }
 415                                         if ( !Util.apiBool( pi.multi ) ) {
 416                                                 widget.paramInfo = pi;
 417                                                 $.extend( widget, WidgetMethods.textInputWidget );
 418                                                 widget.setValidation( Validators.generic );
 419                                         }
 420                                         if ( pi.tokentype ) {
 421                                                 widget.paramInfo = pi;
 422                                                 $.extend( widget, WidgetMethods.textInputWidget );
 423                                                 $.extend( widget, WidgetMethods.tokenWidget );
 424                                         }
 425                                         break;
 426
 427                                 case 'text':
 428                                         widget = new OO.ui.MultilineTextInputWidget( {
 429                                                 required: Util.apiBool( pi.required )
 430                                         } );
 431                                         widget.paramInfo = pi;
 432                                         $.extend( widget, WidgetMethods.textInputWidget );
 433                                         widget.setValidation( Validators.generic );
 434                                         break;
 435
 436                                 case 'password':
 437                                         widget = new OO.ui.TextInputWidget( {
 438                                                 type: 'password',
 439                                                 required: Util.apiBool( pi.required )
 440                                         } );
 441                                         widget.paramInfo = pi;
 442                                         $.extend( widget, WidgetMethods.textInputWidget );
 443                                         $.extend( widget, WidgetMethods.passwordWidget );
 444                                         widget.setValidation( Validators.generic );
 445                                         multiMode = 'enter';
 446                                         break;
 447
 448                                 case 'integer':
 449                                         widget = new OO.ui.NumberInputWidget( {
 450                                                 required: Util.apiBool( pi.required ),
 451                                                 isInteger: true
 452                                         } );
 453                                         widget.setIcon = widget.input.setIcon.bind( widget.input );
 454                                         widget.setIconTitle = widget.input.setIconTitle.bind( widget.input );
 455                                         widget.getValidity = widget.input.getValidity.bind( widget.input );
 456                                         widget.paramInfo = pi;
 457                                         $.extend( widget, WidgetMethods.textInputWidget );
 458                                         if ( Util.apiBool( pi.enforcerange ) ) {
 459                                                 widget.setRange( pi.min || -Infinity, pi.max || Infinity );
 460                                         }
 461                                         multiMode = 'enter';
 462                                         break;
 463
 464                                 case 'limit':
 465                                         widget = new OO.ui.TextInputWidget( {
 466                                                 required: Util.apiBool( pi.required )
 467                                         } );
 468                                         widget.setValidation( function ( value ) {
 469                                                 var n, pi = this.paramInfo;
 470
 471                                                 if ( value === 'max' ) {
 472                                                         return true;
 473                                                 } else {
 474                                                         n = +value;
 475                                                         return !isNaN( n ) && isFinite( n ) &&
 476                                                                 Math.floor( n ) === n &&
 477                                                                 n >= pi.min && n <= pi.apiSandboxMax;
 478                                                 }
 479                                         } );
 480                                         pi.min = pi.min || 0;
 481                                         pi.apiSandboxMax = mw.config.get( 'apihighlimits' ) ? pi.highmax : pi.max;
 482                                         widget.paramInfo = pi;
 483                                         $.extend( widget, WidgetMethods.textInputWidget );
 484                                         multiMode = 'enter';
 485                                         break;
 486
 487                                 case 'timestamp':
 488                                         widget = new mw.widgets.datetime.DateTimeInputWidget( {
 489                                                 formatter: {
 490                                                         format: '${year|0}-${month|0}-${day|0}T${hour|0}:${minute|0}:${second|0}${zone|short}'
 491                                                 },
 492                                                 required: Util.apiBool( pi.required ),
 493                                                 clearable: false
 494                                         } );
 495                                         widget.paramInfo = pi;
 496                                         $.extend( widget, WidgetMethods.textInputWidget );
 497                                         $.extend( widget, WidgetMethods.dateTimeInputWidget );
 498                                         multiMode = 'indicator';
 499                                         break;
 500
 501                                 case 'upload':
 502                                         widget = new OO.ui.SelectFileWidget();
 503                                         widget.paramInfo = pi;
 504                                         $.extend( widget, WidgetMethods.uploadWidget );
 505                                         break;
 506
 507                                 case 'namespace':
 508                                         items = $.map( mw.config.get( 'wgFormattedNamespaces' ), function ( name, ns ) {
 509                                                 if ( ns === '0' ) {
 510                                                         name = mw.message( 'blanknamespace' ).text();
 511                                                 }
 512                                                 return new OO.ui.MenuOptionWidget( { data: ns, label: name } );
 513                                         } ).sort( function ( a, b ) {
 514                                                 return a.data - b.data;
 515                                         } );
 516                                         if ( Util.apiBool( pi.multi ) ) {
 517                                                 if ( pi.allspecifier !== undefined ) {
 518                                                         items.unshift( new OO.ui.MenuOptionWidget( {
 519                                                                 data: pi.allspecifier,
 520                                                                 label: mw.message( 'apisandbox-multivalue-all-namespaces', pi.allspecifier ).text()
 521                                                         } ) );
 522                                                 }
 523
 524                                                 widget = new OO.ui.MenuTagMultiselectWidget( {
 525                                                         menu: { items: items },
 526                                                         $overlay: true
 527                                                 } );
 528                                                 widget.paramInfo = pi;
 529                                                 $.extend( widget, WidgetMethods.tagWidget );
 530                                         } else {
 531                                                 widget = new OO.ui.DropdownWidget( {
 532                                                         menu: { items: items },
 533                                                         $overlay: true
 534                                                 } );
 535                                                 widget.paramInfo = pi;
 536                                                 $.extend( widget, WidgetMethods.dropdownWidget );
 537                                         }
 538                                         break;
 539
 540                                 default:
 541                                         if ( !Array.isArray( pi.type ) ) {
 542                                                 throw new Error( 'Unknown parameter type ' + pi.type );
 543                                         }
 544
 545                                         items = pi.type.map( function ( v ) {
 546                                                 var config = {
 547                                                         data: String( v ),
 548                                                         label: String( v ),
 549                                                         classes: []
 550                                                 };
 551                                                 if ( pi.deprecatedvalues && pi.deprecatedvalues.indexOf( v ) >= 0 ) {
 552                                                         config.classes.push( 'apihelp-deprecated-value' );
 553                                                 }
 554                                                 return new OO.ui.MenuOptionWidget( config );
 555                                         } );
 556                                         if ( Util.apiBool( pi.multi ) ) {
 557                                                 if ( pi.allspecifier !== undefined ) {
 558                                                         items.unshift( new OO.ui.MenuOptionWidget( {
 559                                                                 data: pi.allspecifier,
 560                                                                 label: mw.message( 'apisandbox-multivalue-all-values', pi.allspecifier ).text()
 561                                                         } ) );
 562                                                 }
 563
 564                                                 widget = new OO.ui.MenuTagMultiselectWidget( {
 565                                                         menu: { items: items },
 566                                                         $overlay: true
 567                                                 } );
 568                                                 widget.paramInfo = pi;
 569                                                 $.extend( widget, WidgetMethods.tagWidget );
 570                                                 if ( Util.apiBool( pi.submodules ) ) {
 571                                                         widget.getSubmodules = WidgetMethods.submoduleWidget.multi;
 572                                                         widget.on( 'change', ApiSandbox.updateUI );
 573                                                 }
 574                                         } else {
 575                                                 widget = new OO.ui.DropdownWidget( {
 576                                                         menu: { items: items },
 577                                                         $overlay: true
 578                                                 } );
 579                                                 widget.paramInfo = pi;
 580                                                 $.extend( widget, WidgetMethods.dropdownWidget );
 581                                                 if ( Util.apiBool( pi.submodules ) ) {
 582                                                         widget.getSubmodules = WidgetMethods.submoduleWidget.single;
 583                                                         widget.getMenu().on( 'select', ApiSandbox.updateUI );
 584                                                 }
 585                                                 if ( pi.deprecatedvalues ) {
 586                                                         widget.getMenu().on( 'select', function ( item ) {
 587                                                                 this.$element.toggleClass(
 588                                                                         'apihelp-deprecated-value',
 589                                                                         pi.deprecatedvalues.indexOf( item.data ) >= 0
 590                                                                 );
 591                                                         }, [], widget );
 592                                                 }
 593                                         }
 594
 595                                         break;
 596                         }
 597
 598                         if ( Util.apiBool( pi.multi ) && multiMode !== 'none' ) {
 599                                 innerWidget = widget;
 600                                 switch ( multiMode ) {
 601                                         case 'enter':
 602                                                 $content = innerWidget.$element;
 603                                                 break;
 604
 605                                         case 'indicator':
 606                                                 $button = innerWidget.$indicator;
 607                                                 $button.css( 'cursor', 'pointer' );
 608                                                 $button.attr( 'tabindex', 0 );
 609                                                 $button.parent().append( $button );
 610                                                 innerWidget.setIndicator( 'next' );
 611                                                 $content = innerWidget.$element;
 612                                                 break;
 613
 614                                         default:
 615                                                 throw new Error( 'Unknown multiMode "' + multiMode + '"' );
 616                                 }
 617
 618                                 widget = new OO.ui.PopupTagMultiselectWidget( {
 619                                         allowArbitrary: true,
 620                                         allowDuplicates: Util.apiBool( pi.allowsduplicates ),
 621                                         $overlay: true,
 622                                         popup: {
 623                                                 classes: [ 'mw-apisandbox-popup' ],
 624                                                 $content: $content
 625                                         }
 626                                 } );
 627                                 widget.paramInfo = pi;
 628                                 $.extend( widget, WidgetMethods.tagWidget );
 629
 630                                 func = function () {
 631                                         if ( !innerWidget.isDisabled() ) {
 632                                                 innerWidget.apiCheckValid().done( function ( ok ) {
 633                                                         if ( ok ) {
 634                                                                 widget.addTag( innerWidget.getApiValue() );
 635                                                                 innerWidget.setApiValue( undefined );
 636                                                         }
 637                                                 } );
 638                                                 return false;
 639                                         }
 640                                 };
 641                                 switch ( multiMode ) {
 642                                         case 'enter':
 643                                                 innerWidget.connect( null, { enter: func } );
 644                                                 break;
 645
 646                                         case 'indicator':
 647                                                 $button.on( {
 648                                                         click: func,
 649                                                         keypress: function ( e ) {
 650                                                                 if ( e.which === OO.ui.Keys.SPACE || e.which === OO.ui.Keys.ENTER ) {
 651                                                                         func();
 652                                                                 }
 653                                                         }
 654                                                 } );
 655                                                 break;
 656                                 }
 657                         }
 658
 659                         if ( Util.apiBool( pi.required ) || opts.nooptional ) {
 660                                 finalWidget = widget;
 661                         } else {
 662                                 finalWidget = new OptionalWidget( widget );
 663                                 finalWidget.paramInfo = pi;
 664                                 $.extend( finalWidget, WidgetMethods.optionalWidget );
 665                                 if ( widget.getSubmodules ) {
 666                                         finalWidget.getSubmodules = widget.getSubmodules.bind( widget );
 667                                         finalWidget.on( 'disable', function () { setTimeout( ApiSandbox.updateUI ); } );
 668                                 }
 669                                 finalWidget.setDisabled( true );
 670                         }
 671
 672                         widget.setApiValue( pi[ 'default' ] );
 673
 674                         return finalWidget;
 675                 },
 676
 677                 /**
 678                  * Parse an HTML string and call Util.fixupHTML()
 679                  *
 680                  * @param {string} html HTML to parse
 681                  * @return {jQuery}
 682                  */
 683                 parseHTML: function ( html ) {
 684                         var $ret = $( $.parseHTML( html ) );
 685                         return Util.fixupHTML( $ret );
 686                 },
 687
 688                 /**
 689                  * Parse an i18n message and call Util.fixupHTML()
 690                  *
 691                  * @param {string} key Key of message to get
 692                  * @param {...Mixed} parameters Values for $N replacements
 693                  * @return {jQuery}
 694                  */
 695                 parseMsg: function () {
 696                         var $ret = mw.message.apply( mw.message, arguments ).parseDom();
 697                         return Util.fixupHTML( $ret );
 698                 },
 699
 700                 /**
 701                  * Fix HTML for ApiSandbox display
 702                  *
 703                  * Fixes are:
 704                  * - Add target="_blank" to any links
 705                  *
 706                  * @param {jQuery} $html DOM to process
 707                  * @return {jQuery}
 708                  */
 709                 fixupHTML: function ( $html ) {
 710                         $html.filter( 'a' ).add( $html.find( 'a' ) )
 711                                 .filter( '[href]:not([target])' )
 712                                 .attr( 'target', '_blank' );
 713                         return $html;
 714                 },
 715
 716                 /**
 717                  * Format a request and return a bunch of menu option widgets
 718                  *
 719                  * @param {Object} displayParams Query parameters, sanitized for display.
 720                  * @param {Object} rawParams Query parameters. You should probably use displayParams instead.
 721                  * @return {OO.ui.MenuOptionWidget[]} Each item's data should be an OO.ui.FieldLayout
 722                  */
 723                 formatRequest: function ( displayParams, rawParams ) {
 724                         var jsonInput,
 725                                 items = [
 726                                         new OO.ui.MenuOptionWidget( {
 727                                                 label: Util.parseMsg( 'apisandbox-request-format-url-label' ),
 728                                                 data: new OO.ui.FieldLayout(
 729                                                         new OO.ui.TextInputWidget( {
 730                                                                 readOnly: true,
 731                                                                 value: mw.util.wikiScript( 'api' ) + '?' + $.param( displayParams )
 732                                                         } ), {
 733                                                                 label: Util.parseMsg( 'apisandbox-request-url-label' )
 734                                                         }
 735                                                 )
 736                                         } ),
 737                                         new OO.ui.MenuOptionWidget( {
 738                                                 label: Util.parseMsg( 'apisandbox-request-format-json-label' ),
 739                                                 data: new OO.ui.FieldLayout(
 740                                                         jsonInput = new OO.ui.MultilineTextInputWidget( {
 741                                                                 classes: [ 'mw-apisandbox-textInputCode' ],
 742                                                                 readOnly: true,
 743                                                                 autosize: true,
 744                                                                 maxRows: 6,
 745                                                                 value: JSON.stringify( displayParams, null, '\t' )
 746                                                         } ), {
 747                                                                 label: Util.parseMsg( 'apisandbox-request-json-label' )
 748                                                         }
 749                                                 ).on( 'toggle', function ( visible ) {
 750                                                         if ( visible ) {
 751                                                                 // Call updatePosition instead of adjustSize
 752                                                                 // because the latter has weird caching
 753                                                                 // behavior and the former bypasses it.
 754                                                                 jsonInput.updatePosition();
 755                                                         }
 756                                                 } )
 757                                         } )
 758                                 ];
 759
 760                         mw.hook( 'apisandbox.formatRequest' ).fire( items, displayParams, rawParams );
 761
 762                         return items;
 763                 },
 764
 765                 /**
 766                  * Event handler for when formatDropdown's selection changes
 767                  */
 768                 onFormatDropdownChange: function () {
 769                         var i,
 770                                 menu = formatDropdown.getMenu(),
 771                                 items = menu.getItems(),
 772                                 selectedField = menu.findSelectedItem() ? menu.findSelectedItem().getData() : null;
 773
 774                         for ( i = 0; i < items.length; i++ ) {
 775                                 items[ i ].getData().toggle( items[ i ].getData() === selectedField );
 776                         }
 777                 }
 778         };
 779
 780         /**
 781         * Interface to ApiSandbox UI
 782         *
 783         * @class mw.special.ApiSandbox
 784         */
 785         ApiSandbox = {
 786                 /**
 787                  * Initialize the UI
 788                  *
 789                  * Automatically called on $.ready()
 790                  */
 791                 init: function () {
 792                         var $toolbar;
 793
 794                         ApiSandbox.isFullscreen = false;
 795
 796                         $content = $( '#mw-apisandbox' );
 797
 798                         windowManager = new OO.ui.WindowManager();
 799                         $( 'body' ).append( windowManager.$element );
 800                         windowManager.addWindows( {
 801                                 errorAlert: new OO.ui.MessageDialog()
 802                         } );
 803
 804                         fullscreenButton = new OO.ui.ButtonWidget( {
 805                                 label: mw.message( 'apisandbox-fullscreen' ).text(),
 806                                 title: mw.message( 'apisandbox-fullscreen-tooltip' ).text()
 807                         } ).on( 'click', ApiSandbox.toggleFullscreen );
 808
 809                         $toolbar = $( '<div>' )
 810                                 .addClass( 'mw-apisandbox-toolbar' )
 811                                 .append(
 812                                         fullscreenButton.$element,
 813                                         new OO.ui.ButtonWidget( {
 814                                                 label: mw.message( 'apisandbox-submit' ).text(),
 815                                                 flags: [ 'primary', 'progressive' ]
 816                                         } ).on( 'click', ApiSandbox.sendRequest ).$element,
 817                                         new OO.ui.ButtonWidget( {
 818                                                 label: mw.message( 'apisandbox-reset' ).text(),
 819                                                 flags: 'destructive'
 820                                         } ).on( 'click', ApiSandbox.resetUI ).$element
 821                                 );
 822
 823                         booklet = new OO.ui.BookletLayout( {
 824                                 outlined: true,
 825                                 autoFocus: false
 826                         } );
 827
 828                         panel = new OO.ui.PanelLayout( {
 829                                 classes: [ 'mw-apisandbox-container' ],
 830                                 content: [ booklet ],
 831                                 expanded: false,
 832                                 framed: true
 833                         } );
 834
 835                         pages.main = new ApiSandbox.PageLayout( { key: 'main', path: 'main' } );
 836
 837                         // Parse the current hash string
 838                         if ( !ApiSandbox.loadFromHash() ) {
 839                                 ApiSandbox.updateUI();
 840                         }
 841
 842                         // If the hashchange event exists, use it. Otherwise, fake it.
 843                         // And, of course, IE has to be dumb.
 844                         if ( 'onhashchange' in window &&
 845                                 ( document.documentMode === undefined || document.documentMode >= 8 )
 846                         ) {
 847                                 $( window ).on( 'hashchange', ApiSandbox.loadFromHash );
 848                         } else {
 849                                 setInterval( function () {
 850                                         if ( oldhash !== location.hash ) {
 851                                                 ApiSandbox.loadFromHash();
 852                                         }
 853                                 }, 1000 );
 854                         }
 855
 856                         $content
 857                                 .empty()
 858                                 .append( $( '<p>' ).append( Util.parseMsg( 'apisandbox-intro' ) ) )
 859                                 .append(
 860                                         $( '<div>' ).attr( 'id', 'mw-apisandbox-ui' )
 861                                                 .append( $toolbar )
 862                                                 .append( panel.$element )
 863                                 );
 864
 865                         $( window ).on( 'resize', ApiSandbox.resizePanel );
 866
 867                         ApiSandbox.resizePanel();
 868                 },
 869
 870                 /**
 871                  * Toggle "fullscreen" mode
 872                  */
 873                 toggleFullscreen: function () {
 874                         var $body = $( document.body ),
 875                                 $ui = $( '#mw-apisandbox-ui' );
 876
 877                         ApiSandbox.isFullscreen = !ApiSandbox.isFullscreen;
 878
 879                         $body.toggleClass( 'mw-apisandbox-fullscreen', ApiSandbox.isFullscreen );
 880                         $ui.toggleClass( 'mw-body-content', ApiSandbox.isFullscreen );
 881                         if ( ApiSandbox.isFullscreen ) {
 882                                 fullscreenButton.setLabel( mw.message( 'apisandbox-unfullscreen' ).text() );
 883                                 fullscreenButton.setTitle( mw.message( 'apisandbox-unfullscreen-tooltip' ).text() );
 884                                 OO.ui.getDefaultOverlay().prepend( $ui );
 885                         } else {
 886                                 fullscreenButton.setLabel( mw.message( 'apisandbox-fullscreen' ).text() );
 887                                 fullscreenButton.setTitle( mw.message( 'apisandbox-fullscreen-tooltip' ).text() );
 888                                 $content.append( $ui );
 889                         }
 890                         ApiSandbox.resizePanel();
 891                 },
 892
 893                 /**
 894                  * Set the height of the panel based on the current viewport.
 895                  */
 896                 resizePanel: function () {
 897                         var height = $( window ).height(),
 898                                 contentTop = $content.offset().top;
 899
 900                         if ( ApiSandbox.isFullscreen ) {
 901                                 height -= panel.$element.offset().top - $( '#mw-apisandbox-ui' ).offset().top;
 902                                 panel.$element.height( height - 1 );
 903                         } else {
 904                                 // Subtract the height of the intro text
 905                                 height -= panel.$element.offset().top - contentTop;
 906
 907                                 panel.$element.height( height - 10 );
 908                                 $( window ).scrollTop( contentTop - 5 );
 909                         }
 910                 },
 911
 912                 /**
 913                  * Update the current query when the page hash changes
 914                  *
 915                  * @return {boolean} Successful
 916                  */
 917                 loadFromHash: function () {
 918                         var params, m, re,
 919                                 hash = location.hash;
 920
 921                         if ( oldhash === hash ) {
 922                                 return false;
 923                         }
 924                         oldhash = hash;
 925                         if ( hash === '' ) {
 926                                 return false;
 927                         }
 928
 929                         // I'm surprised this doesn't seem to exist in jQuery or mw.util.
 930                         params = {};
 931                         hash = hash.replace( /\+/g, '%20' );
 932                         re = /([^&=#]+)=?([^&#]*)/g;
 933                         while ( ( m = re.exec( hash ) ) ) {
 934                                 params[ decodeURIComponent( m[ 1 ] ) ] = decodeURIComponent( m[ 2 ] );
 935                         }
 936
 937                         ApiSandbox.updateUI( params );
 938                         return true;
 939                 },
 940
 941                 /**
 942                  * Update the pages in the booklet
 943                  *
 944                  * @param {Object} [params] Optional query parameters to load
 945                  */
 946                 updateUI: function ( params ) {
 947                         var i, page, subpages, j, removePages,
 948                                 addPages = [];
 949
 950                         if ( !$.isPlainObject( params ) ) {
 951                                 params = undefined;
 952                         }
 953
 954                         if ( updatingBooklet ) {
 955                                 return;
 956                         }
 957                         updatingBooklet = true;
 958                         try {
 959                                 if ( params !== undefined ) {
 960                                         pages.main.loadQueryParams( params );
 961                                 }
 962                                 addPages.push( pages.main );
 963                                 if ( resultPage !== null ) {
 964                                         addPages.push( resultPage );
 965                                 }
 966                                 pages.main.apiCheckValid();
 967
 968                                 i = 0;
 969                                 while ( addPages.length ) {
 970                                         page = addPages.shift();
 971                                         if ( bookletPages[ i ] !== page ) {
 972                                                 for ( j = i; j < bookletPages.length; j++ ) {
 973                                                         if ( bookletPages[ j ].getName() === page.getName() ) {
 974                                                                 bookletPages.splice( j, 1 );
 975                                                         }
 976                                                 }
 977                                                 bookletPages.splice( i, 0, page );
 978                                                 booklet.addPages( [ page ], i );
 979                                         }
 980                                         i++;
 981
 982                                         if ( page.getSubpages ) {
 983                                                 subpages = page.getSubpages();
 984                                                 for ( j = 0; j < subpages.length; j++ ) {
 985                                                         if ( !pages.hasOwnProperty( subpages[ j ].key ) ) {
 986                                                                 subpages[ j ].indentLevel = page.indentLevel + 1;
 987                                                                 pages[ subpages[ j ].key ] = new ApiSandbox.PageLayout( subpages[ j ] );
 988                                                         }
 989                                                         if ( params !== undefined ) {
 990                                                                 pages[ subpages[ j ].key ].loadQueryParams( params );
 991                                                         }
 992                                                         addPages.splice( j, 0, pages[ subpages[ j ].key ] );
 993                                                         pages[ subpages[ j ].key ].apiCheckValid();
 994                                                 }
 995                                         }
 996                                 }
 997
 998                                 if ( bookletPages.length > i ) {
 999                                         removePages = bookletPages.splice( i, bookletPages.length - i );
1000                                         booklet.removePages( removePages );
1001                                 }
1002
1003                                 if ( !booklet.getCurrentPageName() ) {
1004                                         booklet.selectFirstSelectablePage();
1005                                 }
1006                         } finally {
1007                                 updatingBooklet = false;
1008                         }
1009                 },
1010
1011                 /**
1012                  * Reset button handler
1013                  */
1014                 resetUI: function () {
1015                         suppressErrors = true;
1016                         pages = {
1017                                 main: new ApiSandbox.PageLayout( { key: 'main', path: 'main' } )
1018                         };
1019                         resultPage = null;
1020                         ApiSandbox.updateUI();
1021                 },
1022
1023                 /**
1024                  * Submit button handler
1025                  *
1026                  * @param {Object} [params] Use this set of params instead of those in the form fields.
1027                  *   The form fields will be updated to match.
1028                  */
1029                 sendRequest: function ( params ) {
1030                         var page, subpages, i, query, $result, $focus,
1031                                 progress, $progressText, progressLoading,
1032                                 deferreds = [],
1033                                 paramsAreForced = !!params,
1034                                 displayParams = {},
1035                                 checkPages = [ pages.main ];
1036
1037                         // Blur any focused widget before submit, because
1038                         // OO.ui.ButtonWidget doesn't take focus itself (T128054)
1039                         $focus = $( '#mw-apisandbox-ui' ).find( document.activeElement );
1040                         if ( $focus.length ) {
1041                                 $focus[ 0 ].blur();
1042                         }
1043
1044                         suppressErrors = false;
1045
1046                         // save widget state in params (or load from it if we are forced)
1047                         if ( paramsAreForced ) {
1048                                 ApiSandbox.updateUI( params );
1049                         }
1050                         params = {};
1051                         while ( checkPages.length ) {
1052                                 page = checkPages.shift();
1053                                 deferreds.push( page.apiCheckValid() );
1054                                 page.getQueryParams( params, displayParams );
1055                                 subpages = page.getSubpages();
1056                                 for ( i = 0; i < subpages.length; i++ ) {
1057                                         if ( pages.hasOwnProperty( subpages[ i ].key ) ) {
1058                                                 checkPages.push( pages[ subpages[ i ].key ] );
1059                                         }
1060                                 }
1061                         }
1062
1063                         if ( !paramsAreForced ) {
1064                                 // forced params means we are continuing a query; the base query should be preserved
1065                                 baseRequestParams = $.extend( {}, params );
1066                         }
1067
1068                         $.when.apply( $, deferreds ).done( function () {
1069                                 var formatItems, menu, selectedLabel;
1070
1071                                 if ( $.inArray( false, arguments ) !== -1 ) {
1072                                         windowManager.openWindow( 'errorAlert', {
1073                                                 title: Util.parseMsg( 'apisandbox-submit-invalid-fields-title' ),
1074                                                 message: Util.parseMsg( 'apisandbox-submit-invalid-fields-message' ),
1075                                                 actions: [
1076                                                         {
1077                                                                 action: 'accept',
1078                                                                 label: OO.ui.msg( 'ooui-dialog-process-dismiss' ),
1079                                                                 flags: 'primary'
1080                                                         }
1081                                                 ]
1082                                         } );
1083                                         return;
1084                                 }
1085
1086                                 query = $.param( displayParams );
1087
1088                                 formatItems = Util.formatRequest( displayParams, params );
1089
1090                                 // Force a 'fm' format with wrappedhtml=1, if available
1091                                 if ( params.format !== undefined ) {
1092                                         if ( availableFormats.hasOwnProperty( params.format + 'fm' ) ) {
1093                                                 params.format = params.format + 'fm';
1094                                         }
1095                                         if ( params.format.substr( -2 ) === 'fm' ) {
1096                                                 params.wrappedhtml = 1;
1097                                         }
1098                                 }
1099
1100                                 progressLoading = false;
1101                                 $progressText = $( '<span>' ).text( mw.message( 'apisandbox-sending-request' ).text() );
1102                                 progress = new OO.ui.ProgressBarWidget( {
1103                                         progress: false,
1104                                         $content: $progressText
1105                                 } );
1106
1107                                 $result = $( '<div>' )
1108                                         .append( progress.$element );
1109
1110                                 resultPage = page = new OO.ui.PageLayout( '|results|' );
1111                                 page.setupOutlineItem = function () {
1112                                         this.outlineItem.setLabel( mw.message( 'apisandbox-results' ).text() );
1113                                 };
1114
1115                                 if ( !formatDropdown ) {
1116                                         formatDropdown = new OO.ui.DropdownWidget( {
1117                                                 menu: { items: [] },
1118                                                 $overlay: true
1119                                         } );
1120                                         formatDropdown.getMenu().on( 'select', Util.onFormatDropdownChange );
1121                                 }
1122
1123                                 menu = formatDropdown.getMenu();
1124                                 selectedLabel = menu.findSelectedItem() ? menu.findSelectedItem().getLabel() : '';
1125                                 if ( typeof selectedLabel !== 'string' ) {
1126                                         selectedLabel = selectedLabel.text();
1127                                 }
1128                                 menu.clearItems().addItems( formatItems );
1129                                 menu.chooseItem( menu.getItemFromLabel( selectedLabel ) || menu.findFirstSelectableItem() );
1130
1131                                 // Fire the event to update field visibilities
1132                                 Util.onFormatDropdownChange();
1133
1134                                 page.$element.empty()
1135                                         .append(
1136                                                 new OO.ui.FieldLayout(
1137                                                         formatDropdown, {
1138                                                                 label: Util.parseMsg( 'apisandbox-request-selectformat-label' )
1139                                                         }
1140                                                 ).$element,
1141                                                 formatItems.map( function ( item ) {
1142                                                         return item.getData().$element;
1143                                                 } ),
1144                                                 $result
1145                                         );
1146                                 ApiSandbox.updateUI();
1147                                 booklet.setPage( '|results|' );
1148
1149                                 location.href = oldhash = '#' + query;
1150
1151                                 api.post( params, {
1152                                         contentType: 'multipart/form-data',
1153                                         dataType: 'text',
1154                                         xhr: function () {
1155                                                 var xhr = new window.XMLHttpRequest();
1156                                                 xhr.upload.addEventListener( 'progress', function ( e ) {
1157                                                         if ( !progressLoading ) {
1158                                                                 if ( e.lengthComputable ) {
1159                                                                         progress.setProgress( e.loaded * 100 / e.total );
1160                                                                 } else {
1161                                                                         progress.setProgress( false );
1162                                                                 }
1163                                                         }
1164                                                 } );
1165                                                 xhr.addEventListener( 'progress', function ( e ) {
1166                                                         if ( !progressLoading ) {
1167                                                                 progressLoading = true;
1168                                                                 $progressText.text( mw.message( 'apisandbox-loading-results' ).text() );
1169                                                         }
1170                                                         if ( e.lengthComputable ) {
1171                                                                 progress.setProgress( e.loaded * 100 / e.total );
1172                                                         } else {
1173                                                                 progress.setProgress( false );
1174                                                         }
1175                                                 } );
1176                                                 return xhr;
1177                                         }
1178                                 } )
1179                                         .catch( function ( code, data, result, jqXHR ) {
1180                                                 var deferred = $.Deferred();
1181
1182                                                 if ( code !== 'http' ) {
1183                                                         // Not really an error, work around mw.Api thinking it is.
1184                                                         deferred.resolve( result, jqXHR );
1185                                                 } else {
1186                                                         // Just forward it.
1187                                                         deferred.reject.apply( deferred, arguments );
1188                                                 }
1189                                                 return deferred.promise();
1190                                         } )
1191                                         .then( function ( data, jqXHR ) {
1192                                                 var m, loadTime, button, clear,
1193                                                         ct = jqXHR.getResponseHeader( 'Content-Type' ),
1194                                                         loginSuppressed = jqXHR.getResponseHeader( 'MediaWiki-Login-Suppressed' ) || 'false';
1195
1196                                                 $result.empty();
1197                                                 if ( loginSuppressed !== 'false' ) {
1198                                                         $( '<div>' )
1199                                                                 .addClass( 'warning' )
1200                                                                 .append( Util.parseMsg( 'apisandbox-results-login-suppressed' ) )
1201                                                                 .appendTo( $result );
1202                                                 }
1203                                                 if ( /^text\/mediawiki-api-prettyprint-wrapped(?:;|$)/.test( ct ) ) {
1204                                                         data = JSON.parse( data );
1205                                                         if ( data.modules.length ) {
1206                                                                 mw.loader.load( data.modules );
1207                                                         }
1208                                                         if ( data.status && data.status !== 200 ) {
1209                                                                 $( '<div>' )
1210                                                                         .addClass( 'api-pretty-header api-pretty-status' )
1211                                                                         .append( Util.parseMsg( 'api-format-prettyprint-status', data.status, data.statustext ) )
1212                                                                         .appendTo( $result );
1213                                                         }
1214                                                         $result.append( Util.parseHTML( data.html ) );
1215                                                         loadTime = data.time;
1216                                                 } else if ( ( m = data.match( /<pre[ >][\s\S]*<\/pre>/ ) ) ) {
1217                                                         $result.append( Util.parseHTML( m[ 0 ] ) );
1218                                                         if ( ( m = data.match( /"wgBackendResponseTime":\s*(\d+)/ ) ) ) {
1219                                                                 loadTime = parseInt( m[ 1 ], 10 );
1220                                                         }
1221                                                 } else {
1222                                                         $( '<pre>' )
1223                                                                 .addClass( 'api-pretty-content' )
1224                                                                 .text( data )
1225                                                                 .appendTo( $result );
1226                                                 }
1227                                                 if ( paramsAreForced || data[ 'continue' ] ) {
1228                                                         $result.append(
1229                                                                 $( '<div>' ).append(
1230                                                                         new OO.ui.ButtonWidget( {
1231                                                                                 label: mw.message( 'apisandbox-continue' ).text()
1232                                                                         } ).on( 'click', function () {
1233                                                                                 ApiSandbox.sendRequest( $.extend( {}, baseRequestParams, data[ 'continue' ] ) );
1234                                                                         } ).setDisabled( !data[ 'continue' ] ).$element,
1235                                                                         ( clear = new OO.ui.ButtonWidget( {
1236                                                                                 label: mw.message( 'apisandbox-continue-clear' ).text()
1237                                                                         } ).on( 'click', function () {
1238                                                                                 ApiSandbox.updateUI( baseRequestParams );
1239                                                                                 clear.setDisabled( true );
1240                                                                                 booklet.setPage( '|results|' );
1241                                                                         } ).setDisabled( !paramsAreForced ) ).$element,
1242                                                                         new OO.ui.PopupButtonWidget( {
1243                                                                                 $overlay: true,
1244                                                                                 framed: false,
1245                                                                                 icon: 'info',
1246                                                                                 popup: {
1247                                                                                         $content: $( '<div>' ).append( Util.parseMsg( 'apisandbox-continue-help' ) ),
1248                                                                                         padded: true,
1249                                                                                         width: 'auto'
1250                                                                                 }
1251                                                                         } ).$element
1252                                                                 )
1253                                                         );
1254                                                 }
1255                                                 if ( typeof loadTime === 'number' ) {
1256                                                         $result.append(
1257                                                                 $( '<div>' ).append(
1258                                                                         new OO.ui.LabelWidget( {
1259                                                                                 label: mw.message( 'apisandbox-request-time', loadTime ).text()
1260                                                                         } ).$element
1261                                                                 )
1262                                                         );
1263                                                 }
1264
1265                                                 if ( jqXHR.getResponseHeader( 'MediaWiki-API-Error' ) === 'badtoken' ) {
1266                                                         // Flush all saved tokens in case one of them is the bad one.
1267                                                         Util.markTokensBad();
1268                                                         button = new OO.ui.ButtonWidget( {
1269                                                                 label: mw.message( 'apisandbox-results-fixtoken' ).text()
1270                                                         } );
1271                                                         button.on( 'click', ApiSandbox.fixTokenAndResend )
1272                                                                 .on( 'click', button.setDisabled, [ true ], button )
1273                                                                 .$element.appendTo( $result );
1274                                                 }
1275                                         }, function ( code, data ) {
1276                                                 var details = 'HTTP error: ' + data.exception;
1277                                                 $result.empty()
1278                                                         .append(
1279                                                                 new OO.ui.LabelWidget( {
1280                                                                         label: mw.message( 'apisandbox-results-error', details ).text(),
1281                                                                         classes: [ 'error' ]
1282                                                                 } ).$element
1283                                                         );
1284                                         } );
1285                         } );
1286                 },
1287
1288                 /**
1289                  * Handler for the "Correct token and resubmit" button
1290                  *
1291                  * Used on a 'badtoken' error, it re-fetches token parameters for all
1292                  * pages and then re-submits the query.
1293                  */
1294                 fixTokenAndResend: function () {
1295                         var page, subpages, i, k,
1296                                 ok = true,
1297                                 tokenWait = { dummy: true },
1298                                 checkPages = [ pages.main ],
1299                                 success = function ( k ) {
1300                                         delete tokenWait[ k ];
1301                                         if ( ok && $.isEmptyObject( tokenWait ) ) {
1302                                                 ApiSandbox.sendRequest();
1303                                         }
1304                                 },
1305                                 failure = function ( k ) {
1306                                         delete tokenWait[ k ];
1307                                         ok = false;
1308                                 };
1309
1310                         while ( checkPages.length ) {
1311                                 page = checkPages.shift();
1312
1313                                 if ( page.tokenWidget ) {
1314                                         k = page.apiModule + page.tokenWidget.paramInfo.name;
1315                                         tokenWait[ k ] = page.tokenWidget.fetchToken();
1316                                         tokenWait[ k ]
1317                                                 .done( success.bind( page.tokenWidget, k ) )
1318                                                 .fail( failure.bind( page.tokenWidget, k ) );
1319                                 }
1320
1321                                 subpages = page.getSubpages();
1322                                 for ( i = 0; i < subpages.length; i++ ) {
1323                                         if ( pages.hasOwnProperty( subpages[ i ].key ) ) {
1324                                                 checkPages.push( pages[ subpages[ i ].key ] );
1325                                         }
1326                                 }
1327                         }
1328
1329                         success( 'dummy', '' );
1330                 },
1331
1332                 /**
1333                  * Reset validity indicators for all widgets
1334                  */
1335                 updateValidityIndicators: function () {
1336                         var page, subpages, i,
1337                                 checkPages = [ pages.main ];
1338
1339                         while ( checkPages.length ) {
1340                                 page = checkPages.shift();
1341                                 page.apiCheckValid();
1342                                 subpages = page.getSubpages();
1343                                 for ( i = 0; i < subpages.length; i++ ) {
1344                                         if ( pages.hasOwnProperty( subpages[ i ].key ) ) {
1345                                                 checkPages.push( pages[ subpages[ i ].key ] );
1346                                         }
1347                                 }
1348                         }
1349                 }
1350         };
1351
1352         /**
1353          * PageLayout for API modules
1354          *
1355          * @class
1356          * @private
1357          * @extends OO.ui.PageLayout
1358          * @constructor
1359          * @param {Object} [config] Configuration options
1360          */
1361         ApiSandbox.PageLayout = function ( config ) {
1362                 config = $.extend( { prefix: '' }, config );
1363                 this.displayText = config.key;
1364                 this.apiModule = config.path;
1365                 this.prefix = config.prefix;
1366                 this.paramInfo = null;
1367                 this.apiIsValid = true;
1368                 this.loadFromQueryParams = null;
1369                 this.widgets = {};
1370                 this.tokenWidget = null;
1371                 this.indentLevel = config.indentLevel ? config.indentLevel : 0;
1372                 ApiSandbox.PageLayout[ 'super' ].call( this, config.key, config );
1373                 this.loadParamInfo();
1374         };
1375         OO.inheritClass( ApiSandbox.PageLayout, OO.ui.PageLayout );
1376         ApiSandbox.PageLayout.prototype.setupOutlineItem = function () {
1377                 this.outlineItem.setLevel( this.indentLevel );
1378                 this.outlineItem.setLabel( this.displayText );
1379                 this.outlineItem.setIcon( this.apiIsValid || suppressErrors ? null : 'alert' );
1380                 this.outlineItem.setIconTitle(
1381                         this.apiIsValid || suppressErrors ? '' : mw.message( 'apisandbox-alert-page' ).plain()
1382                 );
1383         };
1384
1385         /**
1386          * Fetch module information for this page's module, then create UI
1387          */
1388         ApiSandbox.PageLayout.prototype.loadParamInfo = function () {
1389                 var dynamicFieldset, dynamicParamNameWidget,
1390                         that = this,
1391                         removeDynamicParamWidget = function ( name, layout ) {
1392                                 dynamicFieldset.removeItems( [ layout ] );
1393                                 delete that.widgets[ name ];
1394                         },
1395                         addDynamicParamWidget = function () {
1396                                 var name, layout, widget, button;
1397
1398                                 // Check name is filled in
1399                                 name = dynamicParamNameWidget.getValue().trim();
1400                                 if ( name === '' ) {
1401                                         dynamicParamNameWidget.focus();
1402                                         return;
1403                                 }
1404
1405                                 if ( that.widgets[ name ] !== undefined ) {
1406                                         windowManager.openWindow( 'errorAlert', {
1407                                                 title: Util.parseMsg( 'apisandbox-dynamic-error-exists', name ),
1408                                                 actions: [
1409                                                         {
1410                                                                 action: 'accept',
1411                                                                 label: OO.ui.msg( 'ooui-dialog-process-dismiss' ),
1412                                                                 flags: 'primary'
1413                                                         }
1414                                                 ]
1415                                         } );
1416                                         return;
1417                                 }
1418
1419                                 widget = Util.createWidgetForParameter( {
1420                                         name: name,
1421                                         type: 'string',
1422                                         'default': ''
1423                                 }, {
1424                                         nooptional: true
1425                                 } );
1426                                 button = new OO.ui.ButtonWidget( {
1427                                         icon: 'trash',
1428                                         flags: 'destructive'
1429                                 } );
1430                                 layout = new OO.ui.ActionFieldLayout(
1431                                         widget,
1432                                         button,
1433                                         {
1434                                                 label: name,
1435                                                 align: 'left'
1436                                         }
1437                                 );
1438                                 button.on( 'click', removeDynamicParamWidget, [ name, layout ] );
1439                                 that.widgets[ name ] = widget;
1440                                 dynamicFieldset.addItems( [ layout ], dynamicFieldset.getItems().length - 1 );
1441                                 widget.focus();
1442
1443                                 dynamicParamNameWidget.setValue( '' );
1444                         };
1445
1446                 this.$element.empty()
1447                         .append( new OO.ui.ProgressBarWidget( {
1448                                 progress: false,
1449                                 text: mw.message( 'apisandbox-loading', this.displayText ).text()
1450                         } ).$element );
1451
1452                 Util.fetchModuleInfo( this.apiModule )
1453                         .done( function ( pi ) {
1454                                 var prefix, i, j, descriptionContainer, widget, layoutConfig, button, widgetField, helpField, tmp, flag, count,
1455                                         items = [],
1456                                         deprecatedItems = [],
1457                                         buttons = [],
1458                                         filterFmModules = function ( v ) {
1459                                                 return v.substr( -2 ) !== 'fm' ||
1460                                                         !availableFormats.hasOwnProperty( v.substr( 0, v.length - 2 ) );
1461                                         },
1462                                         widgetLabelOnClick = function () {
1463                                                 var f = this.getField();
1464                                                 if ( $.isFunction( f.setDisabled ) ) {
1465                                                         f.setDisabled( false );
1466                                                 }
1467                                                 if ( $.isFunction( f.focus ) ) {
1468                                                         f.focus();
1469                                                 }
1470                                         };
1471
1472                                 // This is something of a hack. We always want the 'format' and
1473                                 // 'action' parameters from the main module to be specified,
1474                                 // and for 'format' we also want to simplify the dropdown since
1475                                 // we always send the 'fm' variant.
1476                                 if ( that.apiModule === 'main' ) {
1477                                         for ( i = 0; i < pi.parameters.length; i++ ) {
1478                                                 if ( pi.parameters[ i ].name === 'action' ) {
1479                                                         pi.parameters[ i ].required = true;
1480                                                         delete pi.parameters[ i ][ 'default' ];
1481                                                 }
1482                                                 if ( pi.parameters[ i ].name === 'format' ) {
1483                                                         tmp = pi.parameters[ i ].type;
1484                                                         for ( j = 0; j < tmp.length; j++ ) {
1485                                                                 availableFormats[ tmp[ j ] ] = true;
1486                                                         }
1487                                                         pi.parameters[ i ].type = tmp.filter( filterFmModules );
1488                                                         pi.parameters[ i ][ 'default' ] = 'json';
1489                                                         pi.parameters[ i ].required = true;
1490                                                 }
1491                                         }
1492                                 }
1493
1494                                 // Hide the 'wrappedhtml' parameter on format modules
1495                                 if ( pi.group === 'format' ) {
1496                                         pi.parameters = pi.parameters.filter( function ( p ) {
1497                                                 return p.name !== 'wrappedhtml';
1498                                         } );
1499                                 }
1500
1501                                 that.paramInfo = pi;
1502
1503                                 items.push( new OO.ui.FieldLayout(
1504                                         new OO.ui.Widget( {} ).toggle( false ), {
1505                                                 align: 'top',
1506                                                 label: Util.parseHTML( pi.description )
1507                                         }
1508                                 ) );
1509
1510                                 if ( pi.helpurls.length ) {
1511                                         buttons.push( new OO.ui.PopupButtonWidget( {
1512                                                 $overlay: true,
1513                                                 label: mw.message( 'apisandbox-helpurls' ).text(),
1514                                                 icon: 'help',
1515                                                 popup: {
1516                                                         width: 'auto',
1517                                                         padded: true,
1518                                                         $content: $( '<ul>' ).append( pi.helpurls.map( function ( link ) {
1519                                                                 return $( '<li>' ).append( $( '<a>' )
1520                                                                         .attr( { href: link, target: '_blank' } )
1521                                                                         .text( link )
1522                                                                 );
1523                                                         } ) )
1524                                                 }
1525                                         } ) );
1526                                 }
1527
1528                                 if ( pi.examples.length ) {
1529                                         buttons.push( new OO.ui.PopupButtonWidget( {
1530                                                 $overlay: true,
1531                                                 label: mw.message( 'apisandbox-examples' ).text(),
1532                                                 icon: 'code',
1533                                                 popup: {
1534                                                         width: 'auto',
1535                                                         padded: true,
1536                                                         $content: $( '<ul>' ).append( pi.examples.map( function ( example ) {
1537                                                                 var a = $( '<a>' )
1538                                                                         .attr( 'href', '#' + example.query )
1539                                                                         .html( example.description );
1540                                                                 a.find( 'a' ).contents().unwrap(); // Can't nest links
1541                                                                 return $( '<li>' ).append( a );
1542                                                         } ) )
1543                                                 }
1544                                         } ) );
1545                                 }
1546
1547                                 if ( buttons.length ) {
1548                                         items.push( new OO.ui.FieldLayout(
1549                                                 new OO.ui.ButtonGroupWidget( {
1550                                                         items: buttons
1551                                                 } ), { align: 'top' }
1552                                         ) );
1553                                 }
1554
1555                                 if ( pi.parameters.length ) {
1556                                         prefix = that.prefix + pi.prefix;
1557                                         for ( i = 0; i < pi.parameters.length; i++ ) {
1558                                                 widget = Util.createWidgetForParameter( pi.parameters[ i ] );
1559                                                 that.widgets[ prefix + pi.parameters[ i ].name ] = widget;
1560                                                 if ( pi.parameters[ i ].tokentype ) {
1561                                                         that.tokenWidget = widget;
1562                                                 }
1563
1564                                                 descriptionContainer = $( '<div>' );
1565
1566                                                 tmp = Util.parseHTML( pi.parameters[ i ].description );
1567                                                 tmp.filter( 'dl' ).makeCollapsible( {
1568                                                         collapsed: true
1569                                                 } ).children( '.mw-collapsible-toggle' ).each( function () {
1570                                                         var $this = $( this );
1571                                                         $this.parent().prev( 'p' ).append( $this );
1572                                                 } );
1573                                                 descriptionContainer.append( $( '<div>' ).addClass( 'description' ).append( tmp ) );
1574
1575                                                 if ( pi.parameters[ i ].info && pi.parameters[ i ].info.length ) {
1576                                                         for ( j = 0; j < pi.parameters[ i ].info.length; j++ ) {
1577                                                                 descriptionContainer.append( $( '<div>' )
1578                                                                         .addClass( 'info' )
1579                                                                         .append( Util.parseHTML( pi.parameters[ i ].info[ j ] ) )
1580                                                                 );
1581                                                         }
1582                                                 }
1583                                                 flag = true;
1584                                                 count = 1e100;
1585                                                 switch ( pi.parameters[ i ].type ) {
1586                                                         case 'namespace':
1587                                                                 flag = false;
1588                                                                 count = mw.config.get( 'wgFormattedNamespaces' ).length;
1589                                                                 break;
1590
1591                                                         case 'limit':
1592                                                                 if ( pi.parameters[ i ].highmax !== undefined ) {
1593                                                                         descriptionContainer.append( $( '<div>' )
1594                                                                                 .addClass( 'info' )
1595                                                                                 .append(
1596                                                                                         Util.parseMsg(
1597                                                                                                 'api-help-param-limit2', pi.parameters[ i ].max, pi.parameters[ i ].highmax
1598                                                                                         ),
1599                                                                                         ' ',
1600                                                                                         Util.parseMsg( 'apisandbox-param-limit' )
1601                                                                                 )
1602                                                                         );
1603                                                                 } else {
1604                                                                         descriptionContainer.append( $( '<div>' )
1605                                                                                 .addClass( 'info' )
1606                                                                                 .append(
1607                                                                                         Util.parseMsg( 'api-help-param-limit', pi.parameters[ i ].max ),
1608                                                                                         ' ',
1609                                                                                         Util.parseMsg( 'apisandbox-param-limit' )
1610                                                                                 )
1611                                                                         );
1612                                                                 }
1613                                                                 break;
1614
1615                                                         case 'integer':
1616                                                                 tmp = '';
1617                                                                 if ( pi.parameters[ i ].min !== undefined ) {
1618                                                                         tmp += 'min';
1619                                                                 }
1620                                                                 if ( pi.parameters[ i ].max !== undefined ) {
1621                                                                         tmp += 'max';
1622                                                                 }
1623                                                                 if ( tmp !== '' ) {
1624                                                                         descriptionContainer.append( $( '<div>' )
1625                                                                                 .addClass( 'info' )
1626                                                                                 .append( Util.parseMsg(
1627                                                                                         'api-help-param-integer-' + tmp,
1628                                                                                         Util.apiBool( pi.parameters[ i ].multi ) ? 2 : 1,
1629                                                                                         pi.parameters[ i ].min, pi.parameters[ i ].max
1630                                                                                 ) )
1631                                                                         );
1632                                                                 }
1633                                                                 break;
1634
1635                                                         default:
1636                                                                 if ( Array.isArray( pi.parameters[ i ].type ) ) {
1637                                                                         flag = false;
1638                                                                         count = pi.parameters[ i ].type.length;
1639                                                                 }
1640                                                                 break;
1641                                                 }
1642                                                 if ( Util.apiBool( pi.parameters[ i ].multi ) ) {
1643                                                         tmp = [];
1644                                                         if ( flag && !( widget instanceof OO.ui.TagMultiselectWidget ) &&
1645                                                                 !(
1646                                                                         widget instanceof OptionalWidget &&
1647                                                                         widget.widget instanceof OO.ui.TagMultiselectWidget
1648                                                                 )
1649                                                         ) {
1650                                                                 tmp.push( mw.message( 'api-help-param-multi-separate' ).parse() );
1651                                                         }
1652                                                         if ( count > pi.parameters[ i ].lowlimit ) {
1653                                                                 tmp.push(
1654                                                                         mw.message( 'api-help-param-multi-max',
1655                                                                                 pi.parameters[ i ].lowlimit, pi.parameters[ i ].highlimit
1656                                                                         ).parse()
1657                                                                 );
1658                                                         }
1659                                                         if ( tmp.length ) {
1660                                                                 descriptionContainer.append( $( '<div>' )
1661                                                                         .addClass( 'info' )
1662                                                                         .append( Util.parseHTML( tmp.join( ' ' ) ) )
1663                                                                 );
1664                                                         }
1665                                                 }
1666                                                 if ( 'maxbytes' in pi.parameters[ i ] ) {
1667                                                         descriptionContainer.append( $( '<div>' )
1668                                                                 .addClass( 'info' )
1669                                                                 .append( Util.parseMsg( 'api-help-param-maxbytes', pi.parameters[ i ].maxbytes ) )
1670                                                         );
1671                                                 }
1672                                                 if ( 'maxchars' in pi.parameters[ i ] ) {
1673                                                         descriptionContainer.append( $( '<div>' )
1674                                                                 .addClass( 'info' )
1675                                                                 .append( Util.parseMsg( 'api-help-param-maxchars', pi.parameters[ i ].maxchars ) )
1676                                                         );
1677                                                 }
1678                                                 helpField = new OO.ui.FieldLayout(
1679                                                         new OO.ui.Widget( {
1680                                                                 $content: '\xa0',
1681                                                                 classes: [ 'mw-apisandbox-spacer' ]
1682                                                         } ), {
1683                                                                 align: 'inline',
1684                                                                 classes: [ 'mw-apisandbox-help-field' ],
1685                                                                 label: descriptionContainer
1686                                                         }
1687                                                 );
1688
1689                                                 layoutConfig = {
1690                                                         align: 'left',
1691                                                         classes: [ 'mw-apisandbox-widget-field' ],
1692                                                         label: prefix + pi.parameters[ i ].name
1693                                                 };
1694
1695                                                 if ( pi.parameters[ i ].tokentype ) {
1696                                                         button = new OO.ui.ButtonWidget( {
1697                                                                 label: mw.message( 'apisandbox-fetch-token' ).text()
1698                                                         } );
1699                                                         button.on( 'click', widget.fetchToken, [], widget );
1700
1701                                                         widgetField = new OO.ui.ActionFieldLayout( widget, button, layoutConfig );
1702                                                 } else {
1703                                                         widgetField = new OO.ui.FieldLayout( widget, layoutConfig );
1704                                                 }
1705
1706                                                 // We need our own click handler on the widget label to
1707                                                 // turn off the disablement.
1708                                                 widgetField.$label.on( 'click', widgetLabelOnClick.bind( widgetField ) );
1709
1710                                                 // Don't grey out the label when the field is disabled,
1711                                                 // it makes it too hard to read and our "disabled"
1712                                                 // isn't really disabled.
1713                                                 widgetField.onFieldDisable( false );
1714                                                 widgetField.onFieldDisable = $.noop;
1715
1716                                                 if ( Util.apiBool( pi.parameters[ i ].deprecated ) ) {
1717                                                         deprecatedItems.push( widgetField, helpField );
1718                                                 } else {
1719                                                         items.push( widgetField, helpField );
1720                                                 }
1721                                         }
1722                                 }
1723
1724                                 if ( !pi.parameters.length && !Util.apiBool( pi.dynamicparameters ) ) {
1725                                         items.push( new OO.ui.FieldLayout(
1726                                                 new OO.ui.Widget( {} ).toggle( false ), {
1727                                                         align: 'top',
1728                                                         label: Util.parseMsg( 'apisandbox-no-parameters' )
1729                                                 }
1730                                         ) );
1731                                 }
1732
1733                                 that.$element.empty();
1734
1735                                 new OO.ui.FieldsetLayout( {
1736                                         label: that.displayText
1737                                 } ).addItems( items )
1738                                         .$element.appendTo( that.$element );
1739
1740                                 if ( Util.apiBool( pi.dynamicparameters ) ) {
1741                                         dynamicFieldset = new OO.ui.FieldsetLayout();
1742                                         dynamicParamNameWidget = new OO.ui.TextInputWidget( {
1743                                                 placeholder: mw.message( 'apisandbox-dynamic-parameters-add-placeholder' ).text()
1744                                         } ).on( 'enter', addDynamicParamWidget );
1745                                         dynamicFieldset.addItems( [
1746                                                 new OO.ui.FieldLayout(
1747                                                         new OO.ui.Widget( {} ).toggle( false ), {
1748                                                                 align: 'top',
1749                                                                 label: Util.parseHTML( pi.dynamicparameters )
1750                                                         }
1751                                                 ),
1752                                                 new OO.ui.ActionFieldLayout(
1753                                                         dynamicParamNameWidget,
1754                                                         new OO.ui.ButtonWidget( {
1755                                                                 icon: 'add',
1756                                                                 flags: 'progressive'
1757                                                         } ).on( 'click', addDynamicParamWidget ),
1758                                                         {
1759                                                                 label: mw.message( 'apisandbox-dynamic-parameters-add-label' ).text(),
1760                                                                 align: 'left'
1761                                                         }
1762                                                 )
1763                                         ] );
1764                                         $( '<fieldset>' )
1765                                                 .append(
1766                                                         $( '<legend>' ).text( mw.message( 'apisandbox-dynamic-parameters' ).text() ),
1767                                                         dynamicFieldset.$element
1768                                                 )
1769                                                 .appendTo( that.$element );
1770                                 }
1771
1772                                 if ( deprecatedItems.length ) {
1773                                         tmp = new OO.ui.FieldsetLayout().addItems( deprecatedItems ).toggle( false );
1774                                         $( '<fieldset>' )
1775                                                 .append(
1776                                                         $( '<legend>' ).append(
1777                                                                 new OO.ui.ToggleButtonWidget( {
1778                                                                         label: mw.message( 'apisandbox-deprecated-parameters' ).text()
1779                                                                 } ).on( 'change', tmp.toggle, [], tmp ).$element
1780                                                         ),
1781                                                         tmp.$element
1782                                                 )
1783                                                 .appendTo( that.$element );
1784                                 }
1785
1786                                 // Load stored params, if any, then update the booklet if we
1787                                 // have subpages (or else just update our valid-indicator).
1788                                 tmp = that.loadFromQueryParams;
1789                                 that.loadFromQueryParams = null;
1790                                 if ( $.isPlainObject( tmp ) ) {
1791                                         that.loadQueryParams( tmp );
1792                                 }
1793                                 if ( that.getSubpages().length > 0 ) {
1794                                         ApiSandbox.updateUI( tmp );
1795                                 } else {
1796                                         that.apiCheckValid();
1797                                 }
1798                         } ).fail( function ( code, detail ) {
1799                                 that.$element.empty()
1800                                         .append(
1801                                                 new OO.ui.LabelWidget( {
1802                                                         label: mw.message( 'apisandbox-load-error', that.apiModule, detail ).text(),
1803                                                         classes: [ 'error' ]
1804                                                 } ).$element,
1805                                                 new OO.ui.ButtonWidget( {
1806                                                         label: mw.message( 'apisandbox-retry' ).text()
1807                                                 } ).on( 'click', that.loadParamInfo, [], that ).$element
1808                                         );
1809                         } );
1810         };
1811
1812         /**
1813          * Check that all widgets on the page are in a valid state.
1814          *
1815          * @return {boolean}
1816          */
1817         ApiSandbox.PageLayout.prototype.apiCheckValid = function () {
1818                 var that = this;
1819
1820                 if ( this.paramInfo === null ) {
1821                         return $.Deferred().resolve( false ).promise();
1822                 } else {
1823                         return $.when.apply( $, $.map( this.widgets, function ( widget ) {
1824                                 return widget.apiCheckValid();
1825                         } ) ).then( function () {
1826                                 that.apiIsValid = $.inArray( false, arguments ) === -1;
1827                                 if ( that.getOutlineItem() ) {
1828                                         that.getOutlineItem().setIcon( that.apiIsValid || suppressErrors ? null : 'alert' );
1829                                         that.getOutlineItem().setIconTitle(
1830                                                 that.apiIsValid || suppressErrors ? '' : mw.message( 'apisandbox-alert-page' ).plain()
1831                                         );
1832                                 }
1833                                 return $.Deferred().resolve( that.apiIsValid ).promise();
1834                         } );
1835                 }
1836         };
1837
1838         /**
1839          * Load form fields from query parameters
1840          *
1841          * @param {Object} params
1842          */
1843         ApiSandbox.PageLayout.prototype.loadQueryParams = function ( params ) {
1844                 if ( this.paramInfo === null ) {
1845                         this.loadFromQueryParams = params;
1846                 } else {
1847                         $.each( this.widgets, function ( name, widget ) {
1848                                 var v = params.hasOwnProperty( name ) ? params[ name ] : undefined;
1849                                 widget.setApiValue( v );
1850                         } );
1851                 }
1852         };
1853
1854         /**
1855          * Load query params from form fields
1856          *
1857          * @param {Object} params Write query parameters into this object
1858          * @param {Object} displayParams Write query parameters for display into this object
1859          */
1860         ApiSandbox.PageLayout.prototype.getQueryParams = function ( params, displayParams ) {
1861                 $.each( this.widgets, function ( name, widget ) {
1862                         var value = widget.getApiValue();
1863                         if ( value !== undefined ) {
1864                                 params[ name ] = value;
1865                                 if ( $.isFunction( widget.getApiValueForDisplay ) ) {
1866                                         value = widget.getApiValueForDisplay();
1867                                 }
1868                                 displayParams[ name ] = value;
1869                         }
1870                 } );
1871         };
1872
1873         /**
1874          * Fetch a list of subpage names loaded by this page
1875          *
1876          * @return {Array}
1877          */
1878         ApiSandbox.PageLayout.prototype.getSubpages = function () {
1879                 var ret = [];
1880                 $.each( this.widgets, function ( name, widget ) {
1881                         var submodules, i;
1882                         if ( $.isFunction( widget.getSubmodules ) ) {
1883                                 submodules = widget.getSubmodules();
1884                                 for ( i = 0; i < submodules.length; i++ ) {
1885                                         ret.push( {
1886                                                 key: name + '=' + submodules[ i ].value,
1887                                                 path: submodules[ i ].path,
1888                                                 prefix: widget.paramInfo.submoduleparamprefix || ''
1889                                         } );
1890                                 }
1891                         }
1892                 } );
1893                 return ret;
1894         };
1895
1896         $( ApiSandbox.init );
1897
1898         module.exports = ApiSandbox;
1899
1900 }( jQuery, mediaWiki, OO ) );