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, $content, func,
 388                                 multiModeButton = null,
 389                                 multiModeInput = null,
 390                                 multiModeAllowed = false;
 391
 392                         opts = opts || {};
 393
 394                         switch ( pi.type ) {
 395                                 case 'boolean':
 396                                         widget = new OO.ui.ToggleSwitchWidget();
 397                                         widget.paramInfo = pi;
 398                                         $.extend( widget, WidgetMethods.toggleSwitchWidget );
 399                                         pi.required = true; // Avoid wrapping in the non-required widget
 400                                         break;
 401
 402                                 case 'string':
 403                                 case 'user':
 404                                         if ( Util.apiBool( pi.multi ) ) {
 405                                                 widget = new OO.ui.TagMultiselectWidget( {
 406                                                         allowArbitrary: true,
 407                                                         allowDuplicates: Util.apiBool( pi.allowsduplicates ),
 408                                                         $overlay: true
 409                                                 } );
 410                                                 widget.paramInfo = pi;
 411                                                 $.extend( widget, WidgetMethods.tagWidget );
 412                                         } else {
 413                                                 widget = new OO.ui.TextInputWidget( {
 414                                                         required: Util.apiBool( pi.required )
 415                                                 } );
 416                                         }
 417                                         if ( !Util.apiBool( pi.multi ) ) {
 418                                                 widget.paramInfo = pi;
 419                                                 $.extend( widget, WidgetMethods.textInputWidget );
 420                                                 widget.setValidation( Validators.generic );
 421                                         }
 422                                         if ( pi.tokentype ) {
 423                                                 widget.paramInfo = pi;
 424                                                 $.extend( widget, WidgetMethods.textInputWidget );
 425                                                 $.extend( widget, WidgetMethods.tokenWidget );
 426                                         }
 427                                         break;
 428
 429                                 case 'text':
 430                                         widget = new OO.ui.MultilineTextInputWidget( {
 431                                                 required: Util.apiBool( pi.required )
 432                                         } );
 433                                         widget.paramInfo = pi;
 434                                         $.extend( widget, WidgetMethods.textInputWidget );
 435                                         widget.setValidation( Validators.generic );
 436                                         break;
 437
 438                                 case 'password':
 439                                         widget = new OO.ui.TextInputWidget( {
 440                                                 type: 'password',
 441                                                 required: Util.apiBool( pi.required )
 442                                         } );
 443                                         widget.paramInfo = pi;
 444                                         $.extend( widget, WidgetMethods.textInputWidget );
 445                                         $.extend( widget, WidgetMethods.passwordWidget );
 446                                         widget.setValidation( Validators.generic );
 447                                         multiModeAllowed = true;
 448                                         multiModeInput = widget;
 449                                         break;
 450
 451                                 case 'integer':
 452                                         widget = new OO.ui.NumberInputWidget( {
 453                                                 required: Util.apiBool( pi.required ),
 454                                                 isInteger: true
 455                                         } );
 456                                         widget.setIcon = widget.input.setIcon.bind( widget.input );
 457                                         widget.setIconTitle = widget.input.setIconTitle.bind( widget.input );
 458                                         widget.getValidity = widget.input.getValidity.bind( widget.input );
 459                                         widget.paramInfo = pi;
 460                                         $.extend( widget, WidgetMethods.textInputWidget );
 461                                         if ( Util.apiBool( pi.enforcerange ) ) {
 462                                                 widget.setRange( pi.min || -Infinity, pi.max || Infinity );
 463                                         }
 464                                         multiModeAllowed = true;
 465                                         multiModeInput = widget;
 466                                         break;
 467
 468                                 case 'limit':
 469                                         widget = new OO.ui.TextInputWidget( {
 470                                                 required: Util.apiBool( pi.required )
 471                                         } );
 472                                         widget.setValidation( function ( value ) {
 473                                                 var n, pi = this.paramInfo;
 474
 475                                                 if ( value === 'max' ) {
 476                                                         return true;
 477                                                 } else {
 478                                                         n = +value;
 479                                                         return !isNaN( n ) && isFinite( n ) &&
 480                                                                 Math.floor( n ) === n &&
 481                                                                 n >= pi.min && n <= pi.apiSandboxMax;
 482                                                 }
 483                                         } );
 484                                         pi.min = pi.min || 0;
 485                                         pi.apiSandboxMax = mw.config.get( 'apihighlimits' ) ? pi.highmax : pi.max;
 486                                         widget.paramInfo = pi;
 487                                         $.extend( widget, WidgetMethods.textInputWidget );
 488                                         multiModeAllowed = true;
 489                                         multiModeInput = widget;
 490                                         break;
 491
 492                                 case 'timestamp':
 493                                         widget = new mw.widgets.datetime.DateTimeInputWidget( {
 494                                                 formatter: {
 495                                                         format: '${year|0}-${month|0}-${day|0}T${hour|0}:${minute|0}:${second|0}${zone|short}'
 496                                                 },
 497                                                 required: Util.apiBool( pi.required ),
 498                                                 clearable: false
 499                                         } );
 500                                         widget.paramInfo = pi;
 501                                         $.extend( widget, WidgetMethods.textInputWidget );
 502                                         $.extend( widget, WidgetMethods.dateTimeInputWidget );
 503                                         multiModeAllowed = true;
 504                                         break;
 505
 506                                 case 'upload':
 507                                         widget = new OO.ui.SelectFileWidget();
 508                                         widget.paramInfo = pi;
 509                                         $.extend( widget, WidgetMethods.uploadWidget );
 510                                         break;
 511
 512                                 case 'namespace':
 513                                         items = $.map( mw.config.get( 'wgFormattedNamespaces' ), function ( name, ns ) {
 514                                                 if ( ns === '0' ) {
 515                                                         name = mw.message( 'blanknamespace' ).text();
 516                                                 }
 517                                                 return new OO.ui.MenuOptionWidget( { data: ns, label: name } );
 518                                         } ).sort( function ( a, b ) {
 519                                                 return a.data - b.data;
 520                                         } );
 521                                         if ( Util.apiBool( pi.multi ) ) {
 522                                                 if ( pi.allspecifier !== undefined ) {
 523                                                         items.unshift( new OO.ui.MenuOptionWidget( {
 524                                                                 data: pi.allspecifier,
 525                                                                 label: mw.message( 'apisandbox-multivalue-all-namespaces', pi.allspecifier ).text()
 526                                                         } ) );
 527                                                 }
 528
 529                                                 widget = new OO.ui.MenuTagMultiselectWidget( {
 530                                                         menu: { items: items },
 531                                                         $overlay: true
 532                                                 } );
 533                                                 widget.paramInfo = pi;
 534                                                 $.extend( widget, WidgetMethods.tagWidget );
 535                                         } else {
 536                                                 widget = new OO.ui.DropdownWidget( {
 537                                                         menu: { items: items },
 538                                                         $overlay: true
 539                                                 } );
 540                                                 widget.paramInfo = pi;
 541                                                 $.extend( widget, WidgetMethods.dropdownWidget );
 542                                         }
 543                                         break;
 544
 545                                 default:
 546                                         if ( !Array.isArray( pi.type ) ) {
 547                                                 throw new Error( 'Unknown parameter type ' + pi.type );
 548                                         }
 549
 550                                         items = pi.type.map( function ( v ) {
 551                                                 var config = {
 552                                                         data: String( v ),
 553                                                         label: String( v ),
 554                                                         classes: []
 555                                                 };
 556                                                 if ( pi.deprecatedvalues && pi.deprecatedvalues.indexOf( v ) >= 0 ) {
 557                                                         config.classes.push( 'apihelp-deprecated-value' );
 558                                                 }
 559                                                 return new OO.ui.MenuOptionWidget( config );
 560                                         } );
 561                                         if ( Util.apiBool( pi.multi ) ) {
 562                                                 if ( pi.allspecifier !== undefined ) {
 563                                                         items.unshift( new OO.ui.MenuOptionWidget( {
 564                                                                 data: pi.allspecifier,
 565                                                                 label: mw.message( 'apisandbox-multivalue-all-values', pi.allspecifier ).text()
 566                                                         } ) );
 567                                                 }
 568
 569                                                 widget = new OO.ui.MenuTagMultiselectWidget( {
 570                                                         menu: { items: items },
 571                                                         $overlay: true
 572                                                 } );
 573                                                 widget.paramInfo = pi;
 574                                                 $.extend( widget, WidgetMethods.tagWidget );
 575                                                 if ( Util.apiBool( pi.submodules ) ) {
 576                                                         widget.getSubmodules = WidgetMethods.submoduleWidget.multi;
 577                                                         widget.on( 'change', ApiSandbox.updateUI );
 578                                                 }
 579                                         } else {
 580                                                 widget = new OO.ui.DropdownWidget( {
 581                                                         menu: { items: items },
 582                                                         $overlay: true
 583                                                 } );
 584                                                 widget.paramInfo = pi;
 585                                                 $.extend( widget, WidgetMethods.dropdownWidget );
 586                                                 if ( Util.apiBool( pi.submodules ) ) {
 587                                                         widget.getSubmodules = WidgetMethods.submoduleWidget.single;
 588                                                         widget.getMenu().on( 'select', ApiSandbox.updateUI );
 589                                                 }
 590                                                 if ( pi.deprecatedvalues ) {
 591                                                         widget.getMenu().on( 'select', function ( item ) {
 592                                                                 this.$element.toggleClass(
 593                                                                         'apihelp-deprecated-value',
 594                                                                         pi.deprecatedvalues.indexOf( item.data ) >= 0
 595                                                                 );
 596                                                         }, [], widget );
 597                                                 }
 598                                         }
 599
 600                                         break;
 601                         }
 602
 603                         if ( Util.apiBool( pi.multi ) && multiModeAllowed ) {
 604                                 innerWidget = widget;
 605
 606                                 multiModeButton = new OO.ui.ButtonWidget( {
 607                                         label: mw.message( 'apisandbox-add-multi' ).text()
 608                                 } );
 609                                 $content = innerWidget.$element.add( multiModeButton.$element );
 610
 611                                 widget = new OO.ui.PopupTagMultiselectWidget( {
 612                                         allowArbitrary: true,
 613                                         allowDuplicates: Util.apiBool( pi.allowsduplicates ),
 614                                         $overlay: true,
 615                                         popup: {
 616                                                 classes: [ 'mw-apisandbox-popup' ],
 617                                                 padded: true,
 618                                                 $content: $content
 619                                         }
 620                                 } );
 621                                 widget.paramInfo = pi;
 622                                 $.extend( widget, WidgetMethods.tagWidget );
 623
 624                                 func = function () {
 625                                         if ( !innerWidget.isDisabled() ) {
 626                                                 innerWidget.apiCheckValid().done( function ( ok ) {
 627                                                         if ( ok ) {
 628                                                                 widget.addTag( innerWidget.getApiValue() );
 629                                                                 innerWidget.setApiValue( undefined );
 630                                                         }
 631                                                 } );
 632                                                 return false;
 633                                         }
 634                                 };
 635
 636                                 if ( multiModeInput ) {
 637                                         multiModeInput.on( 'enter', func );
 638                                 }
 639                                 multiModeButton.on( 'click', func );
 640                         }
 641
 642                         if ( Util.apiBool( pi.required ) || opts.nooptional ) {
 643                                 finalWidget = widget;
 644                         } else {
 645                                 finalWidget = new OptionalWidget( widget );
 646                                 finalWidget.paramInfo = pi;
 647                                 $.extend( finalWidget, WidgetMethods.optionalWidget );
 648                                 if ( widget.getSubmodules ) {
 649                                         finalWidget.getSubmodules = widget.getSubmodules.bind( widget );
 650                                         finalWidget.on( 'disable', function () { setTimeout( ApiSandbox.updateUI ); } );
 651                                 }
 652                                 finalWidget.setDisabled( true );
 653                         }
 654
 655                         widget.setApiValue( pi[ 'default' ] );
 656
 657                         return finalWidget;
 658                 },
 659
 660                 /**
 661                  * Parse an HTML string and call Util.fixupHTML()
 662                  *
 663                  * @param {string} html HTML to parse
 664                  * @return {jQuery}
 665                  */
 666                 parseHTML: function ( html ) {
 667                         var $ret = $( $.parseHTML( html ) );
 668                         return Util.fixupHTML( $ret );
 669                 },
 670
 671                 /**
 672                  * Parse an i18n message and call Util.fixupHTML()
 673                  *
 674                  * @param {string} key Key of message to get
 675                  * @param {...Mixed} parameters Values for $N replacements
 676                  * @return {jQuery}
 677                  */
 678                 parseMsg: function () {
 679                         var $ret = mw.message.apply( mw.message, arguments ).parseDom();
 680                         return Util.fixupHTML( $ret );
 681                 },
 682
 683                 /**
 684                  * Fix HTML for ApiSandbox display
 685                  *
 686                  * Fixes are:
 687                  * - Add target="_blank" to any links
 688                  *
 689                  * @param {jQuery} $html DOM to process
 690                  * @return {jQuery}
 691                  */
 692                 fixupHTML: function ( $html ) {
 693                         $html.filter( 'a' ).add( $html.find( 'a' ) )
 694                                 .filter( '[href]:not([target])' )
 695                                 .attr( 'target', '_blank' );
 696                         return $html;
 697                 },
 698
 699                 /**
 700                  * Format a request and return a bunch of menu option widgets
 701                  *
 702                  * @param {Object} displayParams Query parameters, sanitized for display.
 703                  * @param {Object} rawParams Query parameters. You should probably use displayParams instead.
 704                  * @return {OO.ui.MenuOptionWidget[]} Each item's data should be an OO.ui.FieldLayout
 705                  */
 706                 formatRequest: function ( displayParams, rawParams ) {
 707                         var jsonInput,
 708                                 items = [
 709                                         new OO.ui.MenuOptionWidget( {
 710                                                 label: Util.parseMsg( 'apisandbox-request-format-url-label' ),
 711                                                 data: new OO.ui.FieldLayout(
 712                                                         new OO.ui.TextInputWidget( {
 713                                                                 readOnly: true,
 714                                                                 value: mw.util.wikiScript( 'api' ) + '?' + $.param( displayParams )
 715                                                         } ), {
 716                                                                 label: Util.parseMsg( 'apisandbox-request-url-label' )
 717                                                         }
 718                                                 )
 719                                         } ),
 720                                         new OO.ui.MenuOptionWidget( {
 721                                                 label: Util.parseMsg( 'apisandbox-request-format-json-label' ),
 722                                                 data: new OO.ui.FieldLayout(
 723                                                         jsonInput = new OO.ui.MultilineTextInputWidget( {
 724                                                                 classes: [ 'mw-apisandbox-textInputCode' ],
 725                                                                 readOnly: true,
 726                                                                 autosize: true,
 727                                                                 maxRows: 6,
 728                                                                 value: JSON.stringify( displayParams, null, '\t' )
 729                                                         } ), {
 730                                                                 label: Util.parseMsg( 'apisandbox-request-json-label' )
 731                                                         }
 732                                                 ).on( 'toggle', function ( visible ) {
 733                                                         if ( visible ) {
 734                                                                 // Call updatePosition instead of adjustSize
 735                                                                 // because the latter has weird caching
 736                                                                 // behavior and the former bypasses it.
 737                                                                 jsonInput.updatePosition();
 738                                                         }
 739                                                 } )
 740                                         } )
 741                                 ];
 742
 743                         mw.hook( 'apisandbox.formatRequest' ).fire( items, displayParams, rawParams );
 744
 745                         return items;
 746                 },
 747
 748                 /**
 749                  * Event handler for when formatDropdown's selection changes
 750                  */
 751                 onFormatDropdownChange: function () {
 752                         var i,
 753                                 menu = formatDropdown.getMenu(),
 754                                 items = menu.getItems(),
 755                                 selectedField = menu.findSelectedItem() ? menu.findSelectedItem().getData() : null;
 756
 757                         for ( i = 0; i < items.length; i++ ) {
 758                                 items[ i ].getData().toggle( items[ i ].getData() === selectedField );
 759                         }
 760                 }
 761         };
 762
 763         /**
 764         * Interface to ApiSandbox UI
 765         *
 766         * @class mw.special.ApiSandbox
 767         */
 768         ApiSandbox = {
 769                 /**
 770                  * Initialize the UI
 771                  *
 772                  * Automatically called on $.ready()
 773                  */
 774                 init: function () {
 775                         var $toolbar;
 776
 777                         ApiSandbox.isFullscreen = false;
 778
 779                         $content = $( '#mw-apisandbox' );
 780
 781                         windowManager = new OO.ui.WindowManager();
 782                         $( 'body' ).append( windowManager.$element );
 783                         windowManager.addWindows( {
 784                                 errorAlert: new OO.ui.MessageDialog()
 785                         } );
 786
 787                         fullscreenButton = new OO.ui.ButtonWidget( {
 788                                 label: mw.message( 'apisandbox-fullscreen' ).text(),
 789                                 title: mw.message( 'apisandbox-fullscreen-tooltip' ).text()
 790                         } ).on( 'click', ApiSandbox.toggleFullscreen );
 791
 792                         $toolbar = $( '<div>' )
 793                                 .addClass( 'mw-apisandbox-toolbar' )
 794                                 .append(
 795                                         fullscreenButton.$element,
 796                                         new OO.ui.ButtonWidget( {
 797                                                 label: mw.message( 'apisandbox-submit' ).text(),
 798                                                 flags: [ 'primary', 'progressive' ]
 799                                         } ).on( 'click', ApiSandbox.sendRequest ).$element,
 800                                         new OO.ui.ButtonWidget( {
 801                                                 label: mw.message( 'apisandbox-reset' ).text(),
 802                                                 flags: 'destructive'
 803                                         } ).on( 'click', ApiSandbox.resetUI ).$element
 804                                 );
 805
 806                         booklet = new OO.ui.BookletLayout( {
 807                                 outlined: true,
 808                                 autoFocus: false
 809                         } );
 810
 811                         panel = new OO.ui.PanelLayout( {
 812                                 classes: [ 'mw-apisandbox-container' ],
 813                                 content: [ booklet ],
 814                                 expanded: false,
 815                                 framed: true
 816                         } );
 817
 818                         pages.main = new ApiSandbox.PageLayout( { key: 'main', path: 'main' } );
 819
 820                         // Parse the current hash string
 821                         if ( !ApiSandbox.loadFromHash() ) {
 822                                 ApiSandbox.updateUI();
 823                         }
 824
 825                         $( window ).on( 'hashchange', ApiSandbox.loadFromHash );
 826
 827                         $content
 828                                 .empty()
 829                                 .append( $( '<p>' ).append( Util.parseMsg( 'apisandbox-intro' ) ) )
 830                                 .append(
 831                                         $( '<div>' ).attr( 'id', 'mw-apisandbox-ui' )
 832                                                 .append( $toolbar )
 833                                                 .append( panel.$element )
 834                                 );
 835
 836                         $( window ).on( 'resize', ApiSandbox.resizePanel );
 837
 838                         ApiSandbox.resizePanel();
 839                 },
 840
 841                 /**
 842                  * Toggle "fullscreen" mode
 843                  */
 844                 toggleFullscreen: function () {
 845                         var $body = $( document.body ),
 846                                 $ui = $( '#mw-apisandbox-ui' );
 847
 848                         ApiSandbox.isFullscreen = !ApiSandbox.isFullscreen;
 849
 850                         $body.toggleClass( 'mw-apisandbox-fullscreen', ApiSandbox.isFullscreen );
 851                         $ui.toggleClass( 'mw-body-content', ApiSandbox.isFullscreen );
 852                         if ( ApiSandbox.isFullscreen ) {
 853                                 fullscreenButton.setLabel( mw.message( 'apisandbox-unfullscreen' ).text() );
 854                                 fullscreenButton.setTitle( mw.message( 'apisandbox-unfullscreen-tooltip' ).text() );
 855                                 OO.ui.getDefaultOverlay().prepend( $ui );
 856                         } else {
 857                                 fullscreenButton.setLabel( mw.message( 'apisandbox-fullscreen' ).text() );
 858                                 fullscreenButton.setTitle( mw.message( 'apisandbox-fullscreen-tooltip' ).text() );
 859                                 $content.append( $ui );
 860                         }
 861                         ApiSandbox.resizePanel();
 862                 },
 863
 864                 /**
 865                  * Set the height of the panel based on the current viewport.
 866                  */
 867                 resizePanel: function () {
 868                         var height = $( window ).height(),
 869                                 contentTop = $content.offset().top;
 870
 871                         if ( ApiSandbox.isFullscreen ) {
 872                                 height -= panel.$element.offset().top - $( '#mw-apisandbox-ui' ).offset().top;
 873                                 panel.$element.height( height - 1 );
 874                         } else {
 875                                 // Subtract the height of the intro text
 876                                 height -= panel.$element.offset().top - contentTop;
 877
 878                                 panel.$element.height( height - 10 );
 879                                 $( window ).scrollTop( contentTop - 5 );
 880                         }
 881                 },
 882
 883                 /**
 884                  * Update the current query when the page hash changes
 885                  *
 886                  * @return {boolean} Successful
 887                  */
 888                 loadFromHash: function () {
 889                         var params, m, re,
 890                                 hash = location.hash;
 891
 892                         if ( oldhash === hash ) {
 893                                 return false;
 894                         }
 895                         oldhash = hash;
 896                         if ( hash === '' ) {
 897                                 return false;
 898                         }
 899
 900                         // I'm surprised this doesn't seem to exist in jQuery or mw.util.
 901                         params = {};
 902                         hash = hash.replace( /\+/g, '%20' );
 903                         re = /([^&=#]+)=?([^&#]*)/g;
 904                         while ( ( m = re.exec( hash ) ) ) {
 905                                 params[ decodeURIComponent( m[ 1 ] ) ] = decodeURIComponent( m[ 2 ] );
 906                         }
 907
 908                         ApiSandbox.updateUI( params );
 909                         return true;
 910                 },
 911
 912                 /**
 913                  * Update the pages in the booklet
 914                  *
 915                  * @param {Object} [params] Optional query parameters to load
 916                  */
 917                 updateUI: function ( params ) {
 918                         var i, page, subpages, j, removePages,
 919                                 addPages = [];
 920
 921                         if ( !$.isPlainObject( params ) ) {
 922                                 params = undefined;
 923                         }
 924
 925                         if ( updatingBooklet ) {
 926                                 return;
 927                         }
 928                         updatingBooklet = true;
 929                         try {
 930                                 if ( params !== undefined ) {
 931                                         pages.main.loadQueryParams( params );
 932                                 }
 933                                 addPages.push( pages.main );
 934                                 if ( resultPage !== null ) {
 935                                         addPages.push( resultPage );
 936                                 }
 937                                 pages.main.apiCheckValid();
 938
 939                                 i = 0;
 940                                 while ( addPages.length ) {
 941                                         page = addPages.shift();
 942                                         if ( bookletPages[ i ] !== page ) {
 943                                                 for ( j = i; j < bookletPages.length; j++ ) {
 944                                                         if ( bookletPages[ j ].getName() === page.getName() ) {
 945                                                                 bookletPages.splice( j, 1 );
 946                                                         }
 947                                                 }
 948                                                 bookletPages.splice( i, 0, page );
 949                                                 booklet.addPages( [ page ], i );
 950                                         }
 951                                         i++;
 952
 953                                         if ( page.getSubpages ) {
 954                                                 subpages = page.getSubpages();
 955                                                 for ( j = 0; j < subpages.length; j++ ) {
 956                                                         if ( !pages.hasOwnProperty( subpages[ j ].key ) ) {
 957                                                                 subpages[ j ].indentLevel = page.indentLevel + 1;
 958                                                                 pages[ subpages[ j ].key ] = new ApiSandbox.PageLayout( subpages[ j ] );
 959                                                         }
 960                                                         if ( params !== undefined ) {
 961                                                                 pages[ subpages[ j ].key ].loadQueryParams( params );
 962                                                         }
 963                                                         addPages.splice( j, 0, pages[ subpages[ j ].key ] );
 964                                                         pages[ subpages[ j ].key ].apiCheckValid();
 965                                                 }
 966                                         }
 967                                 }
 968
 969                                 if ( bookletPages.length > i ) {
 970                                         removePages = bookletPages.splice( i, bookletPages.length - i );
 971                                         booklet.removePages( removePages );
 972                                 }
 973
 974                                 if ( !booklet.getCurrentPageName() ) {
 975                                         booklet.selectFirstSelectablePage();
 976                                 }
 977                         } finally {
 978                                 updatingBooklet = false;
 979                         }
 980                 },
 981
 982                 /**
 983                  * Reset button handler
 984                  */
 985                 resetUI: function () {
 986                         suppressErrors = true;
 987                         pages = {
 988                                 main: new ApiSandbox.PageLayout( { key: 'main', path: 'main' } )
 989                         };
 990                         resultPage = null;
 991                         ApiSandbox.updateUI();
 992                 },
 993
 994                 /**
 995                  * Submit button handler
 996                  *
 997                  * @param {Object} [params] Use this set of params instead of those in the form fields.
 998                  *   The form fields will be updated to match.
 999                  */
1000                 sendRequest: function ( params ) {
1001                         var page, subpages, i, query, $result, $focus,
1002                                 progress, $progressText, progressLoading,
1003                                 deferreds = [],
1004                                 paramsAreForced = !!params,
1005                                 displayParams = {},
1006                                 tokenWidgets = [],
1007                                 checkPages = [ pages.main ];
1008
1009                         // Blur any focused widget before submit, because
1010                         // OO.ui.ButtonWidget doesn't take focus itself (T128054)
1011                         $focus = $( '#mw-apisandbox-ui' ).find( document.activeElement );
1012                         if ( $focus.length ) {
1013                                 $focus[ 0 ].blur();
1014                         }
1015
1016                         suppressErrors = false;
1017
1018                         // save widget state in params (or load from it if we are forced)
1019                         if ( paramsAreForced ) {
1020                                 ApiSandbox.updateUI( params );
1021                         }
1022                         params = {};
1023                         while ( checkPages.length ) {
1024                                 page = checkPages.shift();
1025                                 if ( page.tokenWidget ) {
1026                                         tokenWidgets.push( page.tokenWidget );
1027                                 }
1028                                 deferreds = deferreds.concat( page.apiCheckValid() );
1029                                 page.getQueryParams( params, displayParams );
1030                                 subpages = page.getSubpages();
1031                                 for ( i = 0; i < subpages.length; i++ ) {
1032                                         if ( pages.hasOwnProperty( subpages[ i ].key ) ) {
1033                                                 checkPages.push( pages[ subpages[ i ].key ] );
1034                                         }
1035                                 }
1036                         }
1037
1038                         if ( !paramsAreForced ) {
1039                                 // forced params means we are continuing a query; the base query should be preserved
1040                                 baseRequestParams = $.extend( {}, params );
1041                         }
1042
1043                         $.when.apply( $, deferreds ).done( function () {
1044                                 var formatItems, menu, selectedLabel, deferred, actions, errorCount;
1045
1046                                 // Count how many times `value` occurs in `array`.
1047                                 function countValues( value, array ) {
1048                                         var count, i;
1049                                         count = 0;
1050                                         for ( i = 0; i < array.length; i++ ) {
1051                                                 if ( array[ i ] === value ) {
1052                                                         count++;
1053                                                 }
1054                                         }
1055                                         return count;
1056                                 }
1057
1058                                 errorCount = countValues( false, arguments );
1059                                 if ( errorCount > 0 ) {
1060                                         actions = [
1061                                                 {
1062                                                         action: 'accept',
1063                                                         label: OO.ui.msg( 'ooui-dialog-process-dismiss' ),
1064                                                         flags: 'primary'
1065                                                 }
1066                                         ];
1067                                         if ( tokenWidgets.length ) {
1068                                                 // Check all token widgets' validity separately
1069                                                 deferred = $.when.apply( $, tokenWidgets.map( function ( w ) {
1070                                                         return w.apiCheckValid();
1071                                                 } ) );
1072
1073                                                 deferred.done( function () {
1074                                                         // If only the tokens are invalid, offer to fix them
1075                                                         var tokenErrorCount = countValues( false, arguments );
1076                                                         if ( tokenErrorCount === errorCount ) {
1077                                                                 delete actions[ 0 ].flags;
1078                                                                 actions.push( {
1079                                                                         action: 'fix',
1080                                                                         label: mw.message( 'apisandbox-results-fixtoken' ).text(),
1081                                                                         flags: 'primary'
1082                                                                 } );
1083                                                         }
1084                                                 } );
1085                                         } else {
1086                                                 deferred = $.Deferred().resolve();
1087                                         }
1088                                         deferred.always( function () {
1089                                                 windowManager.openWindow( 'errorAlert', {
1090                                                         title: Util.parseMsg( 'apisandbox-submit-invalid-fields-title' ),
1091                                                         message: Util.parseMsg( 'apisandbox-submit-invalid-fields-message' ),
1092                                                         actions: actions
1093                                                 } ).closed.then( function ( data ) {
1094                                                         if ( data && data.action === 'fix' ) {
1095                                                                 ApiSandbox.fixTokenAndResend();
1096                                                         }
1097                                                 } );
1098                                         } );
1099                                         return;
1100                                 }
1101
1102                                 query = $.param( displayParams );
1103
1104                                 formatItems = Util.formatRequest( displayParams, params );
1105
1106                                 // Force a 'fm' format with wrappedhtml=1, if available
1107                                 if ( params.format !== undefined ) {
1108                                         if ( availableFormats.hasOwnProperty( params.format + 'fm' ) ) {
1109                                                 params.format = params.format + 'fm';
1110                                         }
1111                                         if ( params.format.substr( -2 ) === 'fm' ) {
1112                                                 params.wrappedhtml = 1;
1113                                         }
1114                                 }
1115
1116                                 progressLoading = false;
1117                                 $progressText = $( '<span>' ).text( mw.message( 'apisandbox-sending-request' ).text() );
1118                                 progress = new OO.ui.ProgressBarWidget( {
1119                                         progress: false,
1120                                         $content: $progressText
1121                                 } );
1122
1123                                 $result = $( '<div>' )
1124                                         .append( progress.$element );
1125
1126                                 resultPage = page = new OO.ui.PageLayout( '|results|' );
1127                                 page.setupOutlineItem = function () {
1128                                         this.outlineItem.setLabel( mw.message( 'apisandbox-results' ).text() );
1129                                 };
1130
1131                                 if ( !formatDropdown ) {
1132                                         formatDropdown = new OO.ui.DropdownWidget( {
1133                                                 menu: { items: [] },
1134                                                 $overlay: true
1135                                         } );
1136                                         formatDropdown.getMenu().on( 'select', Util.onFormatDropdownChange );
1137                                 }
1138
1139                                 menu = formatDropdown.getMenu();
1140                                 selectedLabel = menu.findSelectedItem() ? menu.findSelectedItem().getLabel() : '';
1141                                 if ( typeof selectedLabel !== 'string' ) {
1142                                         selectedLabel = selectedLabel.text();
1143                                 }
1144                                 menu.clearItems().addItems( formatItems );
1145                                 menu.chooseItem( menu.getItemFromLabel( selectedLabel ) || menu.findFirstSelectableItem() );
1146
1147                                 // Fire the event to update field visibilities
1148                                 Util.onFormatDropdownChange();
1149
1150                                 page.$element.empty()
1151                                         .append(
1152                                                 new OO.ui.FieldLayout(
1153                                                         formatDropdown, {
1154                                                                 label: Util.parseMsg( 'apisandbox-request-selectformat-label' )
1155                                                         }
1156                                                 ).$element,
1157                                                 formatItems.map( function ( item ) {
1158                                                         return item.getData().$element;
1159                                                 } ),
1160                                                 $result
1161                                         );
1162                                 ApiSandbox.updateUI();
1163                                 booklet.setPage( '|results|' );
1164
1165                                 location.href = oldhash = '#' + query;
1166
1167                                 api.post( params, {
1168                                         contentType: 'multipart/form-data',
1169                                         dataType: 'text',
1170                                         xhr: function () {
1171                                                 var xhr = new window.XMLHttpRequest();
1172                                                 xhr.upload.addEventListener( 'progress', function ( e ) {
1173                                                         if ( !progressLoading ) {
1174                                                                 if ( e.lengthComputable ) {
1175                                                                         progress.setProgress( e.loaded * 100 / e.total );
1176                                                                 } else {
1177                                                                         progress.setProgress( false );
1178                                                                 }
1179                                                         }
1180                                                 } );
1181                                                 xhr.addEventListener( 'progress', function ( e ) {
1182                                                         if ( !progressLoading ) {
1183                                                                 progressLoading = true;
1184                                                                 $progressText.text( mw.message( 'apisandbox-loading-results' ).text() );
1185                                                         }
1186                                                         if ( e.lengthComputable ) {
1187                                                                 progress.setProgress( e.loaded * 100 / e.total );
1188                                                         } else {
1189                                                                 progress.setProgress( false );
1190                                                         }
1191                                                 } );
1192                                                 return xhr;
1193                                         }
1194                                 } )
1195                                         .catch( function ( code, data, result, jqXHR ) {
1196                                                 var deferred = $.Deferred();
1197
1198                                                 if ( code !== 'http' ) {
1199                                                         // Not really an error, work around mw.Api thinking it is.
1200                                                         deferred.resolve( result, jqXHR );
1201                                                 } else {
1202                                                         // Just forward it.
1203                                                         deferred.reject.apply( deferred, arguments );
1204                                                 }
1205                                                 return deferred.promise();
1206                                         } )
1207                                         .then( function ( data, jqXHR ) {
1208                                                 var m, loadTime, button, clear,
1209                                                         ct = jqXHR.getResponseHeader( 'Content-Type' ),
1210                                                         loginSuppressed = jqXHR.getResponseHeader( 'MediaWiki-Login-Suppressed' ) || 'false';
1211
1212                                                 $result.empty();
1213                                                 if ( loginSuppressed !== 'false' ) {
1214                                                         $( '<div>' )
1215                                                                 .addClass( 'warning' )
1216                                                                 .append( Util.parseMsg( 'apisandbox-results-login-suppressed' ) )
1217                                                                 .appendTo( $result );
1218                                                 }
1219                                                 if ( /^text\/mediawiki-api-prettyprint-wrapped(?:;|$)/.test( ct ) ) {
1220                                                         data = JSON.parse( data );
1221                                                         if ( data.modules.length ) {
1222                                                                 mw.loader.load( data.modules );
1223                                                         }
1224                                                         if ( data.status && data.status !== 200 ) {
1225                                                                 $( '<div>' )
1226                                                                         .addClass( 'api-pretty-header api-pretty-status' )
1227                                                                         .append( Util.parseMsg( 'api-format-prettyprint-status', data.status, data.statustext ) )
1228                                                                         .appendTo( $result );
1229                                                         }
1230                                                         $result.append( Util.parseHTML( data.html ) );
1231                                                         loadTime = data.time;
1232                                                 } else if ( ( m = data.match( /<pre[ >][\s\S]*<\/pre>/ ) ) ) {
1233                                                         $result.append( Util.parseHTML( m[ 0 ] ) );
1234                                                         if ( ( m = data.match( /"wgBackendResponseTime":\s*(\d+)/ ) ) ) {
1235                                                                 loadTime = parseInt( m[ 1 ], 10 );
1236                                                         }
1237                                                 } else {
1238                                                         $( '<pre>' )
1239                                                                 .addClass( 'api-pretty-content' )
1240                                                                 .text( data )
1241                                                                 .appendTo( $result );
1242                                                 }
1243                                                 if ( paramsAreForced || data[ 'continue' ] ) {
1244                                                         $result.append(
1245                                                                 $( '<div>' ).append(
1246                                                                         new OO.ui.ButtonWidget( {
1247                                                                                 label: mw.message( 'apisandbox-continue' ).text()
1248                                                                         } ).on( 'click', function () {
1249                                                                                 ApiSandbox.sendRequest( $.extend( {}, baseRequestParams, data[ 'continue' ] ) );
1250                                                                         } ).setDisabled( !data[ 'continue' ] ).$element,
1251                                                                         ( clear = new OO.ui.ButtonWidget( {
1252                                                                                 label: mw.message( 'apisandbox-continue-clear' ).text()
1253                                                                         } ).on( 'click', function () {
1254                                                                                 ApiSandbox.updateUI( baseRequestParams );
1255                                                                                 clear.setDisabled( true );
1256                                                                                 booklet.setPage( '|results|' );
1257                                                                         } ).setDisabled( !paramsAreForced ) ).$element,
1258                                                                         new OO.ui.PopupButtonWidget( {
1259                                                                                 $overlay: true,
1260                                                                                 framed: false,
1261                                                                                 icon: 'info',
1262                                                                                 popup: {
1263                                                                                         $content: $( '<div>' ).append( Util.parseMsg( 'apisandbox-continue-help' ) ),
1264                                                                                         padded: true,
1265                                                                                         width: 'auto'
1266                                                                                 }
1267                                                                         } ).$element
1268                                                                 )
1269                                                         );
1270                                                 }
1271                                                 if ( typeof loadTime === 'number' ) {
1272                                                         $result.append(
1273                                                                 $( '<div>' ).append(
1274                                                                         new OO.ui.LabelWidget( {
1275                                                                                 label: mw.message( 'apisandbox-request-time', loadTime ).text()
1276                                                                         } ).$element
1277                                                                 )
1278                                                         );
1279                                                 }
1280
1281                                                 if ( jqXHR.getResponseHeader( 'MediaWiki-API-Error' ) === 'badtoken' ) {
1282                                                         // Flush all saved tokens in case one of them is the bad one.
1283                                                         Util.markTokensBad();
1284                                                         button = new OO.ui.ButtonWidget( {
1285                                                                 label: mw.message( 'apisandbox-results-fixtoken' ).text()
1286                                                         } );
1287                                                         button.on( 'click', ApiSandbox.fixTokenAndResend )
1288                                                                 .on( 'click', button.setDisabled, [ true ], button )
1289                                                                 .$element.appendTo( $result );
1290                                                 }
1291                                         }, function ( code, data ) {
1292                                                 var details = 'HTTP error: ' + data.exception;
1293                                                 $result.empty()
1294                                                         .append(
1295                                                                 new OO.ui.LabelWidget( {
1296                                                                         label: mw.message( 'apisandbox-results-error', details ).text(),
1297                                                                         classes: [ 'error' ]
1298                                                                 } ).$element
1299                                                         );
1300                                         } );
1301                         } );
1302                 },
1303
1304                 /**
1305                  * Handler for the "Correct token and resubmit" button
1306                  *
1307                  * Used on a 'badtoken' error, it re-fetches token parameters for all
1308                  * pages and then re-submits the query.
1309                  */
1310                 fixTokenAndResend: function () {
1311                         var page, subpages, i, k,
1312                                 ok = true,
1313                                 tokenWait = { dummy: true },
1314                                 checkPages = [ pages.main ],
1315                                 success = function ( k ) {
1316                                         delete tokenWait[ k ];
1317                                         if ( ok && $.isEmptyObject( tokenWait ) ) {
1318                                                 ApiSandbox.sendRequest();
1319                                         }
1320                                 },
1321                                 failure = function ( k ) {
1322                                         delete tokenWait[ k ];
1323                                         ok = false;
1324                                 };
1325
1326                         while ( checkPages.length ) {
1327                                 page = checkPages.shift();
1328
1329                                 if ( page.tokenWidget ) {
1330                                         k = page.apiModule + page.tokenWidget.paramInfo.name;
1331                                         tokenWait[ k ] = page.tokenWidget.fetchToken();
1332                                         tokenWait[ k ]
1333                                                 .done( success.bind( page.tokenWidget, k ) )
1334                                                 .fail( failure.bind( page.tokenWidget, k ) );
1335                                 }
1336
1337                                 subpages = page.getSubpages();
1338                                 for ( i = 0; i < subpages.length; i++ ) {
1339                                         if ( pages.hasOwnProperty( subpages[ i ].key ) ) {
1340                                                 checkPages.push( pages[ subpages[ i ].key ] );
1341                                         }
1342                                 }
1343                         }
1344
1345                         success( 'dummy', '' );
1346                 },
1347
1348                 /**
1349                  * Reset validity indicators for all widgets
1350                  */
1351                 updateValidityIndicators: function () {
1352                         var page, subpages, i,
1353                                 checkPages = [ pages.main ];
1354
1355                         while ( checkPages.length ) {
1356                                 page = checkPages.shift();
1357                                 page.apiCheckValid();
1358                                 subpages = page.getSubpages();
1359                                 for ( i = 0; i < subpages.length; i++ ) {
1360                                         if ( pages.hasOwnProperty( subpages[ i ].key ) ) {
1361                                                 checkPages.push( pages[ subpages[ i ].key ] );
1362                                         }
1363                                 }
1364                         }
1365                 }
1366         };
1367
1368         /**
1369          * PageLayout for API modules
1370          *
1371          * @class
1372          * @private
1373          * @extends OO.ui.PageLayout
1374          * @constructor
1375          * @param {Object} [config] Configuration options
1376          */
1377         ApiSandbox.PageLayout = function ( config ) {
1378                 config = $.extend( { prefix: '' }, config );
1379                 this.displayText = config.key;
1380                 this.apiModule = config.path;
1381                 this.prefix = config.prefix;
1382                 this.paramInfo = null;
1383                 this.apiIsValid = true;
1384                 this.loadFromQueryParams = null;
1385                 this.widgets = {};
1386                 this.tokenWidget = null;
1387                 this.indentLevel = config.indentLevel ? config.indentLevel : 0;
1388                 ApiSandbox.PageLayout[ 'super' ].call( this, config.key, config );
1389                 this.loadParamInfo();
1390         };
1391         OO.inheritClass( ApiSandbox.PageLayout, OO.ui.PageLayout );
1392         ApiSandbox.PageLayout.prototype.setupOutlineItem = function () {
1393                 this.outlineItem.setLevel( this.indentLevel );
1394                 this.outlineItem.setLabel( this.displayText );
1395                 this.outlineItem.setIcon( this.apiIsValid || suppressErrors ? null : 'alert' );
1396                 this.outlineItem.setIconTitle(
1397                         this.apiIsValid || suppressErrors ? '' : mw.message( 'apisandbox-alert-page' ).plain()
1398                 );
1399         };
1400
1401         /**
1402          * Fetch module information for this page's module, then create UI
1403          */
1404         ApiSandbox.PageLayout.prototype.loadParamInfo = function () {
1405                 var dynamicFieldset, dynamicParamNameWidget,
1406                         that = this,
1407                         removeDynamicParamWidget = function ( name, layout ) {
1408                                 dynamicFieldset.removeItems( [ layout ] );
1409                                 delete that.widgets[ name ];
1410                         },
1411                         addDynamicParamWidget = function () {
1412                                 var name, layout, widget, button;
1413
1414                                 // Check name is filled in
1415                                 name = dynamicParamNameWidget.getValue().trim();
1416                                 if ( name === '' ) {
1417                                         dynamicParamNameWidget.focus();
1418                                         return;
1419                                 }
1420
1421                                 if ( that.widgets[ name ] !== undefined ) {
1422                                         windowManager.openWindow( 'errorAlert', {
1423                                                 title: Util.parseMsg( 'apisandbox-dynamic-error-exists', name ),
1424                                                 actions: [
1425                                                         {
1426                                                                 action: 'accept',
1427                                                                 label: OO.ui.msg( 'ooui-dialog-process-dismiss' ),
1428                                                                 flags: 'primary'
1429                                                         }
1430                                                 ]
1431                                         } );
1432                                         return;
1433                                 }
1434
1435                                 widget = Util.createWidgetForParameter( {
1436                                         name: name,
1437                                         type: 'string',
1438                                         'default': ''
1439                                 }, {
1440                                         nooptional: true
1441                                 } );
1442                                 button = new OO.ui.ButtonWidget( {
1443                                         icon: 'trash',
1444                                         flags: 'destructive'
1445                                 } );
1446                                 layout = new OO.ui.ActionFieldLayout(
1447                                         widget,
1448                                         button,
1449                                         {
1450                                                 label: name,
1451                                                 align: 'left'
1452                                         }
1453                                 );
1454                                 button.on( 'click', removeDynamicParamWidget, [ name, layout ] );
1455                                 that.widgets[ name ] = widget;
1456                                 dynamicFieldset.addItems( [ layout ], dynamicFieldset.getItems().length - 1 );
1457                                 widget.focus();
1458
1459                                 dynamicParamNameWidget.setValue( '' );
1460                         };
1461
1462                 this.$element.empty()
1463                         .append( new OO.ui.ProgressBarWidget( {
1464                                 progress: false,
1465                                 text: mw.message( 'apisandbox-loading', this.displayText ).text()
1466                         } ).$element );
1467
1468                 Util.fetchModuleInfo( this.apiModule )
1469                         .done( function ( pi ) {
1470                                 var prefix, i, j, descriptionContainer, widget, layoutConfig, button, widgetField, helpField, tmp, flag, count,
1471                                         items = [],
1472                                         deprecatedItems = [],
1473                                         buttons = [],
1474                                         filterFmModules = function ( v ) {
1475                                                 return v.substr( -2 ) !== 'fm' ||
1476                                                         !availableFormats.hasOwnProperty( v.substr( 0, v.length - 2 ) );
1477                                         },
1478                                         widgetLabelOnClick = function () {
1479                                                 var f = this.getField();
1480                                                 if ( $.isFunction( f.setDisabled ) ) {
1481                                                         f.setDisabled( false );
1482                                                 }
1483                                                 if ( $.isFunction( f.focus ) ) {
1484                                                         f.focus();
1485                                                 }
1486                                         };
1487
1488                                 // This is something of a hack. We always want the 'format' and
1489                                 // 'action' parameters from the main module to be specified,
1490                                 // and for 'format' we also want to simplify the dropdown since
1491                                 // we always send the 'fm' variant.
1492                                 if ( that.apiModule === 'main' ) {
1493                                         for ( i = 0; i < pi.parameters.length; i++ ) {
1494                                                 if ( pi.parameters[ i ].name === 'action' ) {
1495                                                         pi.parameters[ i ].required = true;
1496                                                         delete pi.parameters[ i ][ 'default' ];
1497                                                 }
1498                                                 if ( pi.parameters[ i ].name === 'format' ) {
1499                                                         tmp = pi.parameters[ i ].type;
1500                                                         for ( j = 0; j < tmp.length; j++ ) {
1501                                                                 availableFormats[ tmp[ j ] ] = true;
1502                                                         }
1503                                                         pi.parameters[ i ].type = tmp.filter( filterFmModules );
1504                                                         pi.parameters[ i ][ 'default' ] = 'json';
1505                                                         pi.parameters[ i ].required = true;
1506                                                 }
1507                                         }
1508                                 }
1509
1510                                 // Hide the 'wrappedhtml' parameter on format modules
1511                                 if ( pi.group === 'format' ) {
1512                                         pi.parameters = pi.parameters.filter( function ( p ) {
1513                                                 return p.name !== 'wrappedhtml';
1514                                         } );
1515                                 }
1516
1517                                 that.paramInfo = pi;
1518
1519                                 items.push( new OO.ui.FieldLayout(
1520                                         new OO.ui.Widget( {} ).toggle( false ), {
1521                                                 align: 'top',
1522                                                 label: Util.parseHTML( pi.description )
1523                                         }
1524                                 ) );
1525
1526                                 if ( pi.helpurls.length ) {
1527                                         buttons.push( new OO.ui.PopupButtonWidget( {
1528                                                 $overlay: true,
1529                                                 label: mw.message( 'apisandbox-helpurls' ).text(),
1530                                                 icon: 'help',
1531                                                 popup: {
1532                                                         width: 'auto',
1533                                                         padded: true,
1534                                                         $content: $( '<ul>' ).append( pi.helpurls.map( function ( link ) {
1535                                                                 return $( '<li>' ).append( $( '<a>' )
1536                                                                         .attr( { href: link, target: '_blank' } )
1537                                                                         .text( link )
1538                                                                 );
1539                                                         } ) )
1540                                                 }
1541                                         } ) );
1542                                 }
1543
1544                                 if ( pi.examples.length ) {
1545                                         buttons.push( new OO.ui.PopupButtonWidget( {
1546                                                 $overlay: true,
1547                                                 label: mw.message( 'apisandbox-examples' ).text(),
1548                                                 icon: 'code',
1549                                                 popup: {
1550                                                         width: 'auto',
1551                                                         padded: true,
1552                                                         $content: $( '<ul>' ).append( pi.examples.map( function ( example ) {
1553                                                                 var a = $( '<a>' )
1554                                                                         .attr( 'href', '#' + example.query )
1555                                                                         .html( example.description );
1556                                                                 a.find( 'a' ).contents().unwrap(); // Can't nest links
1557                                                                 return $( '<li>' ).append( a );
1558                                                         } ) )
1559                                                 }
1560                                         } ) );
1561                                 }
1562
1563                                 if ( buttons.length ) {
1564                                         items.push( new OO.ui.FieldLayout(
1565                                                 new OO.ui.ButtonGroupWidget( {
1566                                                         items: buttons
1567                                                 } ), { align: 'top' }
1568                                         ) );
1569                                 }
1570
1571                                 if ( pi.parameters.length ) {
1572                                         prefix = that.prefix + pi.prefix;
1573                                         for ( i = 0; i < pi.parameters.length; i++ ) {
1574                                                 widget = Util.createWidgetForParameter( pi.parameters[ i ] );
1575                                                 that.widgets[ prefix + pi.parameters[ i ].name ] = widget;
1576                                                 if ( pi.parameters[ i ].tokentype ) {
1577                                                         that.tokenWidget = widget;
1578                                                 }
1579
1580                                                 descriptionContainer = $( '<div>' );
1581
1582                                                 tmp = Util.parseHTML( pi.parameters[ i ].description );
1583                                                 tmp.filter( 'dl' ).makeCollapsible( {
1584                                                         collapsed: true
1585                                                 } ).children( '.mw-collapsible-toggle' ).each( function () {
1586                                                         var $this = $( this );
1587                                                         $this.parent().prev( 'p' ).append( $this );
1588                                                 } );
1589                                                 descriptionContainer.append( $( '<div>' ).addClass( 'description' ).append( tmp ) );
1590
1591                                                 if ( pi.parameters[ i ].info && pi.parameters[ i ].info.length ) {
1592                                                         for ( j = 0; j < pi.parameters[ i ].info.length; j++ ) {
1593                                                                 descriptionContainer.append( $( '<div>' )
1594                                                                         .addClass( 'info' )
1595                                                                         .append( Util.parseHTML( pi.parameters[ i ].info[ j ] ) )
1596                                                                 );
1597                                                         }
1598                                                 }
1599                                                 flag = true;
1600                                                 count = 1e100;
1601                                                 switch ( pi.parameters[ i ].type ) {
1602                                                         case 'namespace':
1603                                                                 flag = false;
1604                                                                 count = mw.config.get( 'wgFormattedNamespaces' ).length;
1605                                                                 break;
1606
1607                                                         case 'limit':
1608                                                                 if ( pi.parameters[ i ].highmax !== undefined ) {
1609                                                                         descriptionContainer.append( $( '<div>' )
1610                                                                                 .addClass( 'info' )
1611                                                                                 .append(
1612                                                                                         Util.parseMsg(
1613                                                                                                 'api-help-param-limit2', pi.parameters[ i ].max, pi.parameters[ i ].highmax
1614                                                                                         ),
1615                                                                                         ' ',
1616                                                                                         Util.parseMsg( 'apisandbox-param-limit' )
1617                                                                                 )
1618                                                                         );
1619                                                                 } else {
1620                                                                         descriptionContainer.append( $( '<div>' )
1621                                                                                 .addClass( 'info' )
1622                                                                                 .append(
1623                                                                                         Util.parseMsg( 'api-help-param-limit', pi.parameters[ i ].max ),
1624                                                                                         ' ',
1625                                                                                         Util.parseMsg( 'apisandbox-param-limit' )
1626                                                                                 )
1627                                                                         );
1628                                                                 }
1629                                                                 break;
1630
1631                                                         case 'integer':
1632                                                                 tmp = '';
1633                                                                 if ( pi.parameters[ i ].min !== undefined ) {
1634                                                                         tmp += 'min';
1635                                                                 }
1636                                                                 if ( pi.parameters[ i ].max !== undefined ) {
1637                                                                         tmp += 'max';
1638                                                                 }
1639                                                                 if ( tmp !== '' ) {
1640                                                                         descriptionContainer.append( $( '<div>' )
1641                                                                                 .addClass( 'info' )
1642                                                                                 .append( Util.parseMsg(
1643                                                                                         'api-help-param-integer-' + tmp,
1644                                                                                         Util.apiBool( pi.parameters[ i ].multi ) ? 2 : 1,
1645                                                                                         pi.parameters[ i ].min, pi.parameters[ i ].max
1646                                                                                 ) )
1647                                                                         );
1648                                                                 }
1649                                                                 break;
1650
1651                                                         default:
1652                                                                 if ( Array.isArray( pi.parameters[ i ].type ) ) {
1653                                                                         flag = false;
1654                                                                         count = pi.parameters[ i ].type.length;
1655                                                                 }
1656                                                                 break;
1657                                                 }
1658                                                 if ( Util.apiBool( pi.parameters[ i ].multi ) ) {
1659                                                         tmp = [];
1660                                                         if ( flag && !( widget instanceof OO.ui.TagMultiselectWidget ) &&
1661                                                                 !(
1662                                                                         widget instanceof OptionalWidget &&
1663                                                                         widget.widget instanceof OO.ui.TagMultiselectWidget
1664                                                                 )
1665                                                         ) {
1666                                                                 tmp.push( mw.message( 'api-help-param-multi-separate' ).parse() );
1667                                                         }
1668                                                         if ( count > pi.parameters[ i ].lowlimit ) {
1669                                                                 tmp.push(
1670                                                                         mw.message( 'api-help-param-multi-max',
1671                                                                                 pi.parameters[ i ].lowlimit, pi.parameters[ i ].highlimit
1672                                                                         ).parse()
1673                                                                 );
1674                                                         }
1675                                                         if ( tmp.length ) {
1676                                                                 descriptionContainer.append( $( '<div>' )
1677                                                                         .addClass( 'info' )
1678                                                                         .append( Util.parseHTML( tmp.join( ' ' ) ) )
1679                                                                 );
1680                                                         }
1681                                                 }
1682                                                 if ( 'maxbytes' in pi.parameters[ i ] ) {
1683                                                         descriptionContainer.append( $( '<div>' )
1684                                                                 .addClass( 'info' )
1685                                                                 .append( Util.parseMsg( 'api-help-param-maxbytes', pi.parameters[ i ].maxbytes ) )
1686                                                         );
1687                                                 }
1688                                                 if ( 'maxchars' in pi.parameters[ i ] ) {
1689                                                         descriptionContainer.append( $( '<div>' )
1690                                                                 .addClass( 'info' )
1691                                                                 .append( Util.parseMsg( 'api-help-param-maxchars', pi.parameters[ i ].maxchars ) )
1692                                                         );
1693                                                 }
1694                                                 helpField = new OO.ui.FieldLayout(
1695                                                         new OO.ui.Widget( {
1696                                                                 $content: '\xa0',
1697                                                                 classes: [ 'mw-apisandbox-spacer' ]
1698                                                         } ), {
1699                                                                 align: 'inline',
1700                                                                 classes: [ 'mw-apisandbox-help-field' ],
1701                                                                 label: descriptionContainer
1702                                                         }
1703                                                 );
1704
1705                                                 layoutConfig = {
1706                                                         align: 'left',
1707                                                         classes: [ 'mw-apisandbox-widget-field' ],
1708                                                         label: prefix + pi.parameters[ i ].name
1709                                                 };
1710
1711                                                 if ( pi.parameters[ i ].tokentype ) {
1712                                                         button = new OO.ui.ButtonWidget( {
1713                                                                 label: mw.message( 'apisandbox-fetch-token' ).text()
1714                                                         } );
1715                                                         button.on( 'click', widget.fetchToken, [], widget );
1716
1717                                                         widgetField = new OO.ui.ActionFieldLayout( widget, button, layoutConfig );
1718                                                 } else {
1719                                                         widgetField = new OO.ui.FieldLayout( widget, layoutConfig );
1720                                                 }
1721
1722                                                 // We need our own click handler on the widget label to
1723                                                 // turn off the disablement.
1724                                                 widgetField.$label.on( 'click', widgetLabelOnClick.bind( widgetField ) );
1725
1726                                                 // Don't grey out the label when the field is disabled,
1727                                                 // it makes it too hard to read and our "disabled"
1728                                                 // isn't really disabled.
1729                                                 widgetField.onFieldDisable( false );
1730                                                 widgetField.onFieldDisable = $.noop;
1731
1732                                                 if ( Util.apiBool( pi.parameters[ i ].deprecated ) ) {
1733                                                         deprecatedItems.push( widgetField, helpField );
1734                                                 } else {
1735                                                         items.push( widgetField, helpField );
1736                                                 }
1737                                         }
1738                                 }
1739
1740                                 if ( !pi.parameters.length && !Util.apiBool( pi.dynamicparameters ) ) {
1741                                         items.push( new OO.ui.FieldLayout(
1742                                                 new OO.ui.Widget( {} ).toggle( false ), {
1743                                                         align: 'top',
1744                                                         label: Util.parseMsg( 'apisandbox-no-parameters' )
1745                                                 }
1746                                         ) );
1747                                 }
1748
1749                                 that.$element.empty();
1750
1751                                 new OO.ui.FieldsetLayout( {
1752                                         label: that.displayText
1753                                 } ).addItems( items )
1754                                         .$element.appendTo( that.$element );
1755
1756                                 if ( Util.apiBool( pi.dynamicparameters ) ) {
1757                                         dynamicFieldset = new OO.ui.FieldsetLayout();
1758                                         dynamicParamNameWidget = new OO.ui.TextInputWidget( {
1759                                                 placeholder: mw.message( 'apisandbox-dynamic-parameters-add-placeholder' ).text()
1760                                         } ).on( 'enter', addDynamicParamWidget );
1761                                         dynamicFieldset.addItems( [
1762                                                 new OO.ui.FieldLayout(
1763                                                         new OO.ui.Widget( {} ).toggle( false ), {
1764                                                                 align: 'top',
1765                                                                 label: Util.parseHTML( pi.dynamicparameters )
1766                                                         }
1767                                                 ),
1768                                                 new OO.ui.ActionFieldLayout(
1769                                                         dynamicParamNameWidget,
1770                                                         new OO.ui.ButtonWidget( {
1771                                                                 icon: 'add',
1772                                                                 flags: 'progressive'
1773                                                         } ).on( 'click', addDynamicParamWidget ),
1774                                                         {
1775                                                                 label: mw.message( 'apisandbox-dynamic-parameters-add-label' ).text(),
1776                                                                 align: 'left'
1777                                                         }
1778                                                 )
1779                                         ] );
1780                                         $( '<fieldset>' )
1781                                                 .append(
1782                                                         $( '<legend>' ).text( mw.message( 'apisandbox-dynamic-parameters' ).text() ),
1783                                                         dynamicFieldset.$element
1784                                                 )
1785                                                 .appendTo( that.$element );
1786                                 }
1787
1788                                 if ( deprecatedItems.length ) {
1789                                         tmp = new OO.ui.FieldsetLayout().addItems( deprecatedItems ).toggle( false );
1790                                         $( '<fieldset>' )
1791                                                 .append(
1792                                                         $( '<legend>' ).append(
1793                                                                 new OO.ui.ToggleButtonWidget( {
1794                                                                         label: mw.message( 'apisandbox-deprecated-parameters' ).text()
1795                                                                 } ).on( 'change', tmp.toggle, [], tmp ).$element
1796                                                         ),
1797                                                         tmp.$element
1798                                                 )
1799                                                 .appendTo( that.$element );
1800                                 }
1801
1802                                 // Load stored params, if any, then update the booklet if we
1803                                 // have subpages (or else just update our valid-indicator).
1804                                 tmp = that.loadFromQueryParams;
1805                                 that.loadFromQueryParams = null;
1806                                 if ( $.isPlainObject( tmp ) ) {
1807                                         that.loadQueryParams( tmp );
1808                                 }
1809                                 if ( that.getSubpages().length > 0 ) {
1810                                         ApiSandbox.updateUI( tmp );
1811                                 } else {
1812                                         that.apiCheckValid();
1813                                 }
1814                         } ).fail( function ( code, detail ) {
1815                                 that.$element.empty()
1816                                         .append(
1817                                                 new OO.ui.LabelWidget( {
1818                                                         label: mw.message( 'apisandbox-load-error', that.apiModule, detail ).text(),
1819                                                         classes: [ 'error' ]
1820                                                 } ).$element,
1821                                                 new OO.ui.ButtonWidget( {
1822                                                         label: mw.message( 'apisandbox-retry' ).text()
1823                                                 } ).on( 'click', that.loadParamInfo, [], that ).$element
1824                                         );
1825                         } );
1826         };
1827
1828         /**
1829          * Check that all widgets on the page are in a valid state.
1830          *
1831          * @return {jQuery.Promise[]} One promise for each widget, resolved with `false` if invalid
1832          */
1833         ApiSandbox.PageLayout.prototype.apiCheckValid = function () {
1834                 var promises, that = this;
1835
1836                 if ( this.paramInfo === null ) {
1837                         return [];
1838                 } else {
1839                         promises = $.map( this.widgets, function ( widget ) {
1840                                 return widget.apiCheckValid();
1841                         } );
1842                         $.when.apply( $, promises ).then( function () {
1843                                 that.apiIsValid = $.inArray( false, arguments ) === -1;
1844                                 if ( that.getOutlineItem() ) {
1845                                         that.getOutlineItem().setIcon( that.apiIsValid || suppressErrors ? null : 'alert' );
1846                                         that.getOutlineItem().setIconTitle(
1847                                                 that.apiIsValid || suppressErrors ? '' : mw.message( 'apisandbox-alert-page' ).plain()
1848                                         );
1849                                 }
1850                         } );
1851                         return promises;
1852                 }
1853         };
1854
1855         /**
1856          * Load form fields from query parameters
1857          *
1858          * @param {Object} params
1859          */
1860         ApiSandbox.PageLayout.prototype.loadQueryParams = function ( params ) {
1861                 if ( this.paramInfo === null ) {
1862                         this.loadFromQueryParams = params;
1863                 } else {
1864                         $.each( this.widgets, function ( name, widget ) {
1865                                 var v = params.hasOwnProperty( name ) ? params[ name ] : undefined;
1866                                 widget.setApiValue( v );
1867                         } );
1868                 }
1869         };
1870
1871         /**
1872          * Load query params from form fields
1873          *
1874          * @param {Object} params Write query parameters into this object
1875          * @param {Object} displayParams Write query parameters for display into this object
1876          */
1877         ApiSandbox.PageLayout.prototype.getQueryParams = function ( params, displayParams ) {
1878                 $.each( this.widgets, function ( name, widget ) {
1879                         var value = widget.getApiValue();
1880                         if ( value !== undefined ) {
1881                                 params[ name ] = value;
1882                                 if ( $.isFunction( widget.getApiValueForDisplay ) ) {
1883                                         value = widget.getApiValueForDisplay();
1884                                 }
1885                                 displayParams[ name ] = value;
1886                         }
1887                 } );
1888         };
1889
1890         /**
1891          * Fetch a list of subpage names loaded by this page
1892          *
1893          * @return {Array}
1894          */
1895         ApiSandbox.PageLayout.prototype.getSubpages = function () {
1896                 var ret = [];
1897                 $.each( this.widgets, function ( name, widget ) {
1898                         var submodules, i;
1899                         if ( $.isFunction( widget.getSubmodules ) ) {
1900                                 submodules = widget.getSubmodules();
1901                                 for ( i = 0; i < submodules.length; i++ ) {
1902                                         ret.push( {
1903                                                 key: name + '=' + submodules[ i ].value,
1904                                                 path: submodules[ i ].path,
1905                                                 prefix: widget.paramInfo.submoduleparamprefix || ''
1906                                         } );
1907                                 }
1908                         }
1909                 } );
1910                 return ret;
1911         };
1912
1913         $( ApiSandbox.init );
1914
1915         module.exports = ApiSandbox;
1916
1917 }( jQuery, mediaWiki, OO ) );