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

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