includes/HTMLForm.php

   1 <?php
   2
   3 class HTMLForm {
   4
   5         static $jsAdded = false;
   6
   7         /* The descriptor is an array of arrays.
   8                 i.e. array(
   9                                         'fieldname' => array( 'section' => 'section/subsection',
  10                                                                                         properties... ),
  11                                         ...
  12                                   )
  13          */
  14
  15          static $typeMappings = array(
  16                 'text' => 'HTMLTextField',
  17                 'select' => 'HTMLSelectField',
  18                 'radio' => 'HTMLRadioField',
  19                 'multiselect' => 'HTMLMultiSelectField',
  20                 'check' => 'HTMLCheckField',
  21                 'toggle' => 'HTMLCheckField',
  22                 'int' => 'HTMLIntField',
  23                 'info' => 'HTMLInfoField',
  24                 'selectorother' => 'HTMLSelectOrOtherField',
  25          );
  26
  27         function __construct( $descriptor, $messagePrefix ) {
  28                 $this->mMessagePrefix = $messagePrefix;
  29
  30                 // Expand out into a tree.
  31                 $loadedDescriptor = array();
  32                 $this->mFlatFields = array();
  33
  34                 foreach( $descriptor as $fieldname => $info ) {
  35                         $section = '';
  36                         if ( isset( $info['section'] ) )
  37                                 $section = $info['section'];
  38
  39                         $info['name'] = $fieldname;
  40
  41                         $field = $this->loadInputFromParameters( $info );
  42                         $field->mParent = $this;
  43
  44                         $setSection =& $loadedDescriptor;
  45                         if ($section) {
  46                                 $sectionParts = explode( '/', $section );
  47
  48                                 while( count($sectionParts) ) {
  49                                         $newName = array_shift( $sectionParts );
  50
  51                                         if ( !isset($setSection[$newName]) ) {
  52                                                 $setSection[$newName] = array();
  53                                         }
  54
  55                                         $setSection =& $setSection[$newName];
  56                                 }
  57                         }
  58
  59                         $setSection[$fieldname] = $field;
  60                         $this->mFlatFields[$fieldname] = $field;
  61                 }
  62
  63                 $this->mFieldTree = $loadedDescriptor;
  64
  65                 $this->mShowReset = true;
  66         }
  67
  68         static function addJS() {
  69                 if (self::$jsAdded) return;
  70
  71                 global $wgOut, $wgStylePath;
  72
  73                 $wgOut->addScriptFile( "$wgStylePath/common/htmlform.js" );
  74         }
  75
  76         static function loadInputFromParameters( $descriptor ) {
  77                 if ( isset( $descriptor['class'] ) ) {
  78                         $class = $descriptor['class'];
  79                 } elseif ( isset( $descriptor['type'] ) ) {
  80                         $class = self::$typeMappings[$descriptor['type']];
  81                         $descriptor['class'] = $class;
  82                 }
  83
  84                 if (!$class) {
  85                         throw new MWException( "Descriptor with no class: ".print_r( $descriptor, true ) );
  86                 }
  87
  88                 $obj = new $class( $descriptor );
  89
  90                 return $obj;
  91         }
  92
  93         function show() {
  94                 $html = '';
  95
  96                 self::addJS();
  97
  98                 // Load data from the request.
  99                 $this->loadData();
 100
 101                 // Try a submission
 102                 global $wgUser, $wgRequest;
 103                 $editToken = $wgRequest->getVal( 'wpEditToken' );
 104
 105                 $result = false;
 106                 if ( $wgUser->matchEditToken( $editToken ) )
 107                         $result = $this->trySubmit();
 108
 109                 if ($result === true)
 110                         return $result;
 111
 112                 // Display form.
 113                 $this->displayForm( $result );
 114         }
 115
 116         /** Return values:
 117           * TRUE == Successful submission
 118           * FALSE == No submission attempted
 119           * Anything else == Error to display.
 120           */
 121         function trySubmit() {
 122                 // Check for validation
 123                 foreach( $this->mFlatFields as $fieldname => $field ) {
 124                         if ( !empty($field->mParams['nodata']) ) continue;
 125                         if ( $field->validate( $this->mFieldData[$fieldname],
 126                                         $this->mFieldData ) !== true ) {
 127                                 return isset($this->mValidationErrorMessage) ?
 128                                                 $this->mValidationErrorMessage : array( 'htmlform-invalid-input' );
 129                         }
 130                 }
 131
 132                 $callback = $this->mSubmitCallback;
 133
 134                 $data = $this->filterDataForSubmit( $this->mFieldData );
 135
 136                 $res = call_user_func( $callback, $data );
 137
 138                 return $res;
 139         }
 140
 141         function setSubmitCallback( $cb ) {
 142                 $this->mSubmitCallback = $cb;
 143         }
 144
 145         function setValidationErrorMessage( $msg ) {
 146                 $this->mValidationErrorMessage = $msg;
 147         }
 148
 149         function setIntro( $msg ) {
 150                 $this->mIntro = $msg;
 151         }
 152
 153         function displayForm( $submitResult ) {
 154                 global $wgOut;
 155
 156                 if ( $submitResult !== false ) {
 157                         $this->displayErrors( $submitResult );
 158                 }
 159
 160                 if ( isset($this->mIntro) ) {
 161                         $wgOut->addHTML( $this->mIntro );
 162                 }
 163
 164                 $html = $this->getBody();
 165
 166                 // Hidden fields
 167                 $html .= $this->getHiddenFields();
 168
 169                 // Buttons
 170                 $html .= $this->getButtons();
 171
 172                 $html = $this->wrapForm( $html );
 173
 174                 $wgOut->addHTML( $html );
 175         }
 176
 177         function wrapForm( $html ) {
 178                 return Xml::tags( 'form',
 179                                                         array(
 180                                                                 'action' => $this->getTitle()->getFullURL(),
 181                                                                 'method' => 'post',
 182                                                         ),
 183                                                         $html );
 184         }
 185
 186         function getHiddenFields() {
 187                 global $wgUser;
 188                 $html = '';
 189
 190                 $html .= Xml::hidden( 'wpEditToken', $wgUser->editToken() ) . "\n";
 191                 $html .= Xml::hidden( 'title', $this->getTitle() ) . "\n";
 192
 193                 return $html;
 194         }
 195
 196         function getButtons() {
 197                 $html = '';
 198
 199                 $attribs = array();
 200
 201                 if ( isset($this->mSubmitID) )
 202                         $attribs['id'] = $this->mSubmitID;
 203
 204                 $attribs['class'] = 'mw-htmlform-submit';
 205
 206                 $html .= Xml::submitButton( $this->getSubmitText(), $attribs ) . "\n";
 207
 208                 if ($this->mShowReset) {
 209                         $html .= Xml::element( 'input',
 210                                                                         array( 'type' => 'reset',
 211                                                                                         'value' => wfMsg('htmlform-reset')
 212                                                                         ) ) . "\n";
 213                 }
 214
 215                 return $html;
 216         }
 217
 218         function getBody() {
 219                 return $this->displaySection( $this->mFieldTree );
 220         }
 221
 222         function displayErrors( $errors ) {
 223                 if ( is_array( $errors ) ) {
 224                         $errorstr = $this->formatErrors( $errors );
 225                 } else {
 226                         $errorstr = $errors;
 227                 }
 228
 229                 $errorstr = Xml::tags( 'div', array( 'class' => 'error' ), $errorstr );
 230
 231                 global $wgOut;
 232                 $wgOut->addHTML( $errorstr );
 233         }
 234
 235         static function formatErrors( $errors ) {
 236                 $errorstr = '';
 237                 foreach ( $errors as $error ) {
 238                         if (is_array($error)) {
 239                                 $msg = array_shift($error);
 240                         } else {
 241                                 $msg = $error;
 242                                 $error = array();
 243                         }
 244                         $errorstr .= Xml::tags( 'li',
 245                                                                         null,
 246                                                                         wfMsgExt( $msg, array( 'parseinline' ), $error )
 247                                                                         );
 248                 }
 249
 250                 $errorstr = Xml::tags( 'ul', null, $errorstr );
 251
 252                 return $errorstr;
 253         }
 254
 255         function setSubmitText( $t ) {
 256                 $this->mSubmitText = $t;
 257         }
 258
 259         function getSubmitText() {
 260                 return isset($this->mSubmitText) ? $this->mSubmitText : wfMsg('htmlform-submit');
 261         }
 262
 263         function setSubmitID( $t ) {
 264                 $this->mSubmitID = $t;
 265         }
 266
 267         function setMessagePrefix( $p ) {
 268                 $this->mMessagePrefix = $p;
 269         }
 270
 271         function setTitle( $t ) {
 272                 $this->mTitle = $t;
 273         }
 274
 275         function getTitle() {
 276                 return $this->mTitle;
 277         }
 278
 279         function displaySection( $fields ) {
 280                 $tableHtml = '';
 281                 $subsectionHtml = '';
 282                 $hasLeftColumn = false;
 283
 284                 foreach( $fields as $key => $value ) {
 285                         if ( is_object( $value ) ) {
 286                                 $v = empty($value->mParams['nodata'])
 287                                                         ? $this->mFieldData[$key]
 288                                                         : $value->getDefault();
 289                                 $tableHtml .= $value->getTableRow( $v );
 290
 291                                 if ($value->getLabel() != '&nbsp;')
 292                                         $hasLeftColumn = true;
 293                         } elseif ( is_array( $value ) ) {
 294                                 $section = $this->displaySection( $value );
 295                                 $legend = wfMsg( "{$this->mMessagePrefix}-$key" );
 296                                 $subsectionHtml .= Xml::fieldset( $legend, $section ) . "\n";
 297                         }
 298                 }
 299
 300                 $classes = array();
 301                 if (!$hasLeftColumn) // Avoid strange spacing when no labels exist
 302                         $classes[] = 'mw-htmlform-nolabel';
 303                 $classes = implode( ' ', $classes );
 304
 305                 $tableHtml = "<table class='$classes'><tbody>\n$tableHtml\n</tbody></table>\n";
 306
 307                 return $subsectionHtml . "\n" . $tableHtml;
 308         }
 309
 310         function loadData() {
 311                 global $wgRequest;
 312
 313                 $fieldData = array();
 314
 315                 foreach( $this->mFlatFields as $fieldname => $field ) {
 316                         if ( !empty($field->mParams['nodata']) ) continue;
 317                         if ( !empty($field->mParams['disabled']) ) {
 318                                 $fieldData[$fieldname] = $field->getDefault();
 319                         } else {
 320                                 $fieldData[$fieldname] = $field->loadDataFromRequest( $wgRequest );
 321                         }
 322                 }
 323
 324                 // Filter data.
 325                 foreach( $fieldData as $name => &$value ) {
 326                         $field = $this->mFlatFields[$name];
 327                         $value = $field->filter( $value, $this->mFlatFields );
 328                 }
 329
 330                 $this->mFieldData = $fieldData;
 331         }
 332
 333         function importData( $fieldData ) {
 334                 // Filter data.
 335                 foreach( $fieldData as $name => &$value ) {
 336                         $field = $this->mFlatFields[$name];
 337                         $value = $field->filter( $value, $this->mFlatFields );
 338                 }
 339
 340                 foreach( $this->mFlatFields as $fieldname => $field ) {
 341                         if ( !isset($fieldData[$fieldname]) )
 342                                 $fieldData[$fieldname] = $field->getDefault();
 343                 }
 344
 345                 $this->mFieldData = $fieldData;
 346         }
 347
 348         function suppressReset( $suppressReset = true ) {
 349                 $this->mShowReset = !$suppressReset;
 350         }
 351
 352         function filterDataForSubmit( $data ) {
 353                 return $data;
 354         }
 355 }
 356
 357 abstract class HTMLFormField {
 358         abstract function getInputHTML( $value );
 359
 360         function validate( $value, $alldata ) {
 361                 if ( isset($this->mValidationCallback) ) {
 362                         return call_user_func( $this->mValidationCallback, $value, $alldata );
 363                 }
 364
 365                 return true;
 366         }
 367
 368         function filter( $value, $alldata ) {
 369                 if( isset( $this->mFilterCallback ) ) {
 370                         $value = call_user_func( $this->mFilterCallback, $value, $alldata );
 371                 }
 372
 373                 return $value;
 374         }
 375
 376         function loadDataFromRequest( $request ) {
 377                 if ($request->getCheck( $this->mName ) ) {
 378                         return $request->getText( $this->mName );
 379                 } else {
 380                         return $this->getDefault();
 381                 }
 382         }
 383
 384         function __construct( $params ) {
 385                 $this->mParams = $params;
 386
 387                 if (isset( $params['label-message'] ) ) {
 388                         $msgInfo = $params['label-message'];
 389
 390                         if ( is_array( $msgInfo ) ) {
 391                                 $msg = array_shift( $msgInfo );
 392                         } else {
 393                                 $msg = $msgInfo;
 394                                 $msgInfo = array();
 395                         }
 396
 397                         $this->mLabel = wfMsgExt( $msg, 'parseinline', $msgInfo );
 398                 } elseif ( isset($params['label']) ) {
 399                         $this->mLabel = $params['label'];
 400                 }
 401
 402                 if ( isset( $params['name'] ) ) {
 403                         $this->mName = 'wp'.$params['name'];
 404                         $this->mID = 'mw-input-'.$params['name'];
 405                 }
 406
 407                 if ( isset( $params['default'] ) ) {
 408                         $this->mDefault = $params['default'];
 409                 }
 410
 411                 if ( isset( $params['id'] ) ) {
 412                         $this->mID = $params['id'];
 413                 }
 414
 415                 if ( isset( $params['validation-callback'] ) ) {
 416                         $this->mValidationCallback = $params['validation-callback'];
 417                 }
 418
 419                 if ( isset( $params['filter-callback'] ) ) {
 420                         $this->mFilterCallback = $params['filter-callback'];
 421                 }
 422         }
 423
 424         function getTableRow( $value ) {
 425                 // Check for invalid data.
 426                 global $wgRequest;
 427
 428                 $errors = $this->validate( $value, $this->mParent->mFieldData );
 429                 if ( $errors === true || !$wgRequest->wasPosted() ) {
 430                         $errors = '';
 431                 } else {
 432                         $errors = Xml::tags( 'span', array( 'class' => 'error' ), $errors );
 433                 }
 434
 435                 $html = '';
 436
 437                 $html .= Xml::tags( 'td', array( 'class' => 'mw-label' ),
 438                                         Xml::tags( 'label', array( 'for' => $this->mID ), $this->getLabel() )
 439                                 );
 440                 $html .= Xml::tags( 'td', array( 'class' => 'mw-input' ),
 441                                                         $this->getInputHTML( $value ) ."\n$errors" );
 442
 443                 $fieldType = get_class($this);
 444
 445                 $html = Xml::tags( 'tr', array( 'class' => "mw-htmlform-field-$fieldType" ),
 446                                                         $html ) . "\n";
 447
 448                 // Help text
 449                 if ( isset($this->mParams['help-message']) ) {
 450                         $msg = $this->mParams['help-message'];
 451
 452                         $text = wfMsgExt( $msg, 'parseinline' );
 453
 454                         if (!wfEmptyMsg( $msg, $text ) ) {
 455                                 $row = Xml::tags( 'td', array( 'colspan' => 2, 'class' => 'htmlform-tip' ),
 456                                                         $text );
 457
 458                                 $row = Xml::tags( 'tr', null, $row );
 459
 460                                 $html .= "$row\n";
 461                         }
 462                 }
 463
 464                 return $html;
 465         }
 466
 467         function getLabel() {
 468                 return $this->mLabel;
 469         }
 470
 471         function getDefault() {
 472                 if ( isset( $this->mDefault ) ) {
 473                         return $this->mDefault;
 474                 } else {
 475                         return null;
 476                 }
 477         }
 478
 479         static function flattenOptions( $options ) {
 480                 $flatOpts = array();
 481
 482                 foreach( $options as $key => $value ) {
 483                         if ( is_array( $value ) ) {
 484                                 $flatOpts = array_merge( $flatOpts, self::flattenOptions( $value ) );
 485                         } else {
 486                                 $flatOpts[] = $value;
 487                         }
 488                 }
 489
 490                 return $flatOpts;
 491         }
 492 }
 493
 494 class HTMLTextField extends HTMLFormField {
 495
 496         function getSize() {
 497                 return isset($this->mParams['size']) ? $this->mParams['size'] : 45;
 498         }
 499
 500         function getInputHTML( $value ) {
 501                 $attribs = array( 'id' => $this->mID );
 502
 503                 if ( isset($this->mParams['maxlength']) ) {
 504                         $attribs['maxlength'] = $this->mParams['maxlength'];
 505                 }
 506
 507                 if (!empty($this->mParams['disabled'])) {
 508                         $attribs['disabled'] = 'disabled';
 509                 }
 510
 511                 return Xml::input( $this->mName,
 512                                                         $this->getSize(),
 513                                                         $value,
 514                                                         $attribs ) ;
 515         }
 516
 517 }
 518
 519 class HTMLIntField extends HTMLTextField {
 520         function getSize() {
 521                 return isset($this->mParams['size']) ? $this->mParams['size'] : 20;
 522         }
 523
 524         function validate( $value, $alldata ) {
 525                 $p = parent::validate($value, $alldata);
 526
 527                 if ($p !== true) return $p;
 528
 529                 if ( intval($value) != $value ) {
 530                         return wfMsgExt( 'htmlform-int-invalid', 'parse' );
 531                 }
 532
 533                 $in_range = true;
 534
 535                 if ( isset($this->mParams['min']) ) {
 536                         $min = $this->mParams['min'];
 537                         if ( $min > $value )
 538                                 return wfMsgExt( 'htmlform-int-toolow', 'parse', array($min) );
 539                 }
 540
 541                 if ( isset($this->mParams['max']) ) {
 542                         $max = $this->mParams['max'];
 543                         if ($max < $value)
 544                                 return wfMsgExt( 'htmlform-int-toohigh', 'parse', array($max) );
 545                 }
 546
 547                 return true;
 548         }
 549 }
 550
 551 class HTMLCheckField extends HTMLFormField {
 552         function getInputHTML( $value ) {
 553                 if ( !empty( $this->mParams['invert'] ) )
 554                         $value = !$value;
 555
 556                 $attr = array( 'id' => $this->mID );
 557                 if (!empty($this->mParams['disabled'])) {
 558                         $attr['disabled'] = 'disabled';
 559                 }
 560
 561                 return Xml::check( $this->mName, $value, $attr ) . '&nbsp;' .
 562                                 Xml::tags( 'label', array( 'for' => $this->mID ), $this->mLabel );
 563         }
 564
 565         function getLabel( ) {
 566                 return '&nbsp;'; // In the right-hand column.
 567         }
 568
 569         function loadDataFromRequest( $request ) {
 570                 $invert = false;
 571                 if ( isset( $this->mParams['invert'] ) && $this->mParams['invert'] ) {
 572                         $invert = true;
 573                 }
 574
 575                 // GetCheck won't work like we want for checks.
 576                 if ($request->getCheck( 'wpEditToken' ) ) {
 577                         // XOR has the following truth table, which is what we want
 578                         // INVERT VALUE | OUTPUT
 579                         // true   true  | false
 580                         // false  true  | true
 581                         // false  false | false
 582                         // true   false | true
 583                         return $request->getBool( $this->mName ) xor $invert;
 584                 } else {
 585                         return $this->getDefault();
 586                 }
 587         }
 588 }
 589
 590 class HTMLSelectField extends HTMLFormField {
 591
 592         function validate( $value, $alldata ) {
 593                 $p = parent::validate( $value, $alldata );
 594                 if ($p !== true) return $p;
 595
 596                 $validOptions = HTMLFormField::flattenOptions( $this->mParams['options'] );
 597                 if ( in_array( $value, $validOptions ) )
 598                         return true;
 599                 else
 600                         return wfMsgExt( 'htmlform-select-badoption', 'parseinline' );
 601         }
 602
 603         function getInputHTML( $value ) {
 604                 $select = new XmlSelect( $this->mName, $this->mID, strval($value) );
 605
 606                 // If one of the options' 'name' is int(0), it is automatically selected.
 607                 //  because PHP sucks and things int(0) == 'some string'.
 608                 //  Working around this by forcing all of them to strings.
 609                 $options = array_map( 'strval', $this->mParams['options'] );
 610
 611                 if (!empty($this->mParams['disabled'])) {
 612                         $select->setAttribute( 'disabled', 'disabled' );
 613                 }
 614
 615                 $select->addOptions( $options );
 616
 617                 return $select->getHTML();
 618         }
 619 }
 620
 621 class HTMLSelectOrOtherField extends HTMLTextField {
 622         static $jsAdded = false;
 623
 624         function __construct( $params ) {
 625                 if (! array_key_exists('other', $params['options']) ) {
 626                         $params['options'][wfMsg( 'htmlform-selectorother-other' )] = 'other';
 627                 }
 628
 629                 parent::__construct( $params );
 630         }
 631
 632         function getInputHTML( $value ) {
 633                 $valInSelect = false;
 634
 635                 if ($value !== false)
 636                         $valInSelect = in_array( $value,
 637                                                         HTMLFormField::flattenOptions($this->mParams['options']) );
 638
 639                 $selected = $valInSelect ? $value : 'other';
 640
 641                 $select = new XmlSelect( $this->mName, $this->mID, $selected );
 642                 $select->addOptions( $this->mParams['options'] );
 643
 644                 $select->setAttribute( 'class', 'mw-htmlform-select-or-other' );
 645
 646                 $tbAttribs = array( 'id' => $this->mID.'-other' );
 647                 if (!empty($this->mParams['disabled'])) {
 648                         $select->setAttribute( 'disabled', 'disabled' );
 649                         $tbAttribs['disabled'] = 'disabled';
 650                 }
 651
 652                 $select = $select->getHTML();
 653
 654                 if ( isset($this->mParams['maxlength']) ) {
 655                         $tbAttribs['maxlength'] = $this->mParams['maxlength'];
 656                 }
 657
 658                 $textbox = Xml::input( $this->mName.'-other',
 659                                                         $this->getSize(),
 660                                                         $valInSelect ? '' : $value,
 661                                                         $tbAttribs );
 662
 663                 return "$select<br/>\n$textbox";
 664         }
 665
 666         function loadDataFromRequest( $request ) {
 667                 if ($request->getCheck( $this->mName ) ) {
 668                         $val = $request->getText( $this->mName );
 669
 670                         if ($val == 'other') {
 671                                 $val = $request->getText( $this->mName.'-other' );
 672                         }
 673
 674                         return $val;
 675                 } else {
 676                         return $this->getDefault();
 677                 }
 678         }
 679 }
 680
 681 class HTMLMultiSelectField extends HTMLFormField {
 682         function validate( $value, $alldata ) {
 683                 $p = parent::validate( $value, $alldata );
 684                 if ($p !== true) return $p;
 685
 686                 if (!is_array($value)) return false;
 687
 688                 // If all options are valid, array_intersect of the valid options and the provided
 689                 //  options will return the provided options.
 690                 $validOptions = HTMLFormField::flattenOptions( $this->mParams['options'] );
 691
 692                 $validValues = array_intersect( $value, $validOptions );
 693                 if ( count( $validValues ) == count($value) )
 694                         return true;
 695                 else
 696                         return wfMsgExt( 'htmlform-select-badoption', 'parseinline' );
 697         }
 698
 699         function getInputHTML( $value ) {
 700                 $html = $this->formatOptions( $this->mParams['options'], $value );
 701
 702                 return $html;
 703         }
 704
 705         function formatOptions( $options, $value ) {
 706                 $html = '';
 707
 708                 $attribs = array();
 709                 if ( !empty( $this->mParams['disabled'] ) ) {
 710                         $attribs['disabled'] = 'disabled';
 711                 }
 712
 713                 foreach( $options as $label => $info ) {
 714                         if (is_array($info)) {
 715                                 $html .= Xml::tags( 'h1', null, $label ) . "\n";
 716                                 $html .= $this->formatOptions( $info, $value );
 717                         } else {
 718                                 $thisAttribs = array( 'id' => $this->mID."-$info", 'value' => $info );
 719
 720                                 $checkbox = Xml::check( $this->mName.'[]', in_array( $info, $value ),
 721                                                                 $attribs + $thisAttribs );
 722                                 $checkbox .= '&nbsp;' . Xml::tags( 'label', array( 'for' => $this->mID."-$info" ), $label );
 723
 724                                 $html .= $checkbox . '<br />';
 725                         }
 726                 }
 727
 728                 return $html;
 729         }
 730
 731         function loadDataFromRequest( $request ) {
 732                 // won't work with getCheck
 733                 if ($request->getCheck( 'wpEditToken' ) ) {
 734                         $arr = $request->getArray( $this->mName );
 735
 736                         if (!$arr)
 737                                 $arr = array();
 738
 739                         return $arr;
 740                 } else {
 741                         return $this->getDefault();
 742                 }
 743         }
 744
 745         function getDefault() {
 746                 if ( isset( $this->mDefault ) ) {
 747                         return $this->mDefault;
 748                 } else {
 749                         return array();
 750                 }
 751         }
 752 }
 753
 754 class HTMLRadioField extends HTMLFormField {
 755         function validate( $value, $alldata ) {
 756                 $p = parent::validate( $value, $alldata );
 757                 if ($p !== true) return $p;
 758
 759                 if (!is_string($value) && !is_int($value))
 760                         return false;
 761
 762                 $validOptions = HTMLFormField::flattenOptions( $this->mParams['options'] );
 763
 764                 if ( in_array( $value, $validOptions ) )
 765                         return true;
 766                 else
 767                         return wfMsgExt( 'htmlform-select-badoption', 'parseinline' );
 768         }
 769
 770         function getInputHTML( $value ) {
 771                 $html = $this->formatOptions( $this->mParams['options'], $value );
 772
 773                 return $html;
 774         }
 775
 776         function formatOptions( $options, $value ) {
 777                 $html = '';
 778
 779                 $attribs = array();
 780                 if ( !empty( $this->mParams['disabled'] ) ) {
 781                         $attribs['disabled'] = 'disabled';
 782                 }
 783
 784                 foreach( $options as $label => $info ) {
 785                         if (is_array($info)) {
 786                                 $html .= Xml::tags( 'h1', null, $label ) . "\n";
 787                                 $html .= $this->formatOptions( $info, $value );
 788                         } else {
 789                                 $html .= Xml::radio( $this->mName, $info, $info == $value,
 790                                                                                 $attribs + array( 'id' => $this->mID."-$info" ) );
 791                                 $html .= '&nbsp;' .
 792                                                 Xml::tags( 'label', array( 'for' => $this->mID."-$info" ), $label );
 793
 794                                 $html .= "<br/>\n";
 795                         }
 796                 }
 797
 798                 return $html;
 799         }
 800 }
 801
 802 class HTMLInfoField extends HTMLFormField {
 803         function __construct( $info ) {
 804                 $info['nodata'] = true;
 805
 806                 parent::__construct($info);
 807         }
 808
 809         function getInputHTML( $value ) {
 810                 return !empty($this->mParams['raw']) ? $value : htmlspecialchars($value);
 811         }
 812
 813         function getTableRow( $value ) {
 814                 if ( !empty($this->mParams['rawrow']) ) {
 815                         return $value;
 816                 }
 817
 818                 return parent::getTableRow( $value );
 819         }
 820 }