includes/HTMLForm.php

   1 <?php
   2 /**
   3  * Object handling generic submission, CSRF protection, layout and
   4  * other logic for UI forms. in a reusable manner.
   5  *
   6  * In order to generate the form, the HTMLForm object takes an array
   7  * structure detailing the form fields available. Each element of the
   8  * array is a basic property-list, including the type of field, the
   9  * label it is to be given in the form, callbacks for validation and
  10  * 'filtering', and other pertinent information.
  11  *
  12  * Field types are implemented as subclasses of the generic HTMLFormField
  13  * object, and typically implement at least getInputHTML, which generates
  14  * the HTML for the input field to be placed in the table.
  15  *
  16  * The constructor input is an associative array of $fieldname => $info,
  17  * where $info is an Associative Array with any of the following:
  18  *
  19  *      'class'               -- the subclass of HTMLFormField that will be used
  20  *                               to create the object.  *NOT* the CSS class!
  21  *      'type'                -- roughly translates into the <select> type attribute.
  22  *                               if 'class' is not specified, this is used as a map
  23  *                               through HTMLForm::$typeMappings to get the class name.
  24  *      'default'             -- default value when the form is displayed
  25  *      'id'                  -- HTML id attribute
  26  *      'cssclass'            -- CSS class
  27  *      'options'             -- varies according to the specific object.
  28  *      'label-message'       -- message key for a message to use as the label.
  29  *                               can be an array of msg key and then parameters to
  30  *                               the message.
  31  *      'label'               -- alternatively, a raw text message. Overridden by
  32  *                               label-message
  33  *      'help-message'        -- message key for a message to use as a help text.
  34  *                               can be an array of msg key and then parameters to
  35  *                               the message.
  36  *      'required'            -- passed through to the object, indicating that it
  37  *                               is a required field.
  38  *      'size'                -- the length of text fields
  39  *      'filter-callback      -- a function name to give you the chance to
  40  *                               massage the inputted value before it's processed.
  41  *                               @see HTMLForm::filter()
  42  *      'validation-callback' -- a function name to give you the chance
  43  *                               to impose extra validation on the field input.
  44  *                               @see HTMLForm::validate()
  45  *      'name'                -- By default, the 'name' attribute of the input field
  46  *                               is "wp{$fieldname}".  If you want a different name
  47  *                               (eg one without the "wp" prefix), specify it here and
  48  *                               it will be used without modification.
  49  *
  50  * TODO: Document 'section' / 'subsection' stuff
  51  */
  52 class HTMLForm {
  53         static $jsAdded = false;
  54
  55         # A mapping of 'type' inputs onto standard HTMLFormField subclasses
  56         static $typeMappings = array(
  57                 'text' => 'HTMLTextField',
  58                 'textarea' => 'HTMLTextAreaField',
  59                 'select' => 'HTMLSelectField',
  60                 'radio' => 'HTMLRadioField',
  61                 'multiselect' => 'HTMLMultiSelectField',
  62                 'check' => 'HTMLCheckField',
  63                 'toggle' => 'HTMLCheckField',
  64                 'int' => 'HTMLIntField',
  65                 'float' => 'HTMLFloatField',
  66                 'info' => 'HTMLInfoField',
  67                 'selectorother' => 'HTMLSelectOrOtherField',
  68                 'submit' => 'HTMLSubmitField',
  69                 'hidden' => 'HTMLHiddenField',
  70                 'edittools' => 'HTMLEditTools',
  71
  72                 # HTMLTextField will output the correct type="" attribute automagically.
  73                 # There are about four zillion other HTML5 input types, like url, but
  74                 # we don't use those at the moment, so no point in adding all of them.
  75                 'email' => 'HTMLTextField',
  76                 'password' => 'HTMLTextField',
  77         );
  78
  79         protected $mMessagePrefix;
  80         protected $mFlatFields;
  81         protected $mFieldTree;
  82         protected $mShowReset = false;
  83         public $mFieldData;
  84
  85         protected $mSubmitCallback;
  86         protected $mValidationErrorMessage;
  87
  88         protected $mPre = '';
  89         protected $mHeader = '';
  90         protected $mFooter = '';
  91         protected $mPost = '';
  92         protected $mId;
  93
  94         protected $mSubmitID;
  95         protected $mSubmitName;
  96         protected $mSubmitText;
  97         protected $mSubmitTooltip;
  98         protected $mTitle;
  99         protected $mMethod = 'post';
 100
 101         protected $mUseMultipart = false;
 102         protected $mHiddenFields = array();
 103         protected $mButtons = array();
 104
 105         protected $mWrapperLegend = false;
 106
 107         /**
 108          * Build a new HTMLForm from an array of field attributes
 109          * @param $descriptor Array of Field constructs, as described above
 110          * @param $messagePrefix String a prefix to go in front of default messages
 111          */
 112         public function __construct( $descriptor, $messagePrefix = '' ) {
 113                 $this->mMessagePrefix = $messagePrefix;
 114
 115                 // Expand out into a tree.
 116                 $loadedDescriptor = array();
 117                 $this->mFlatFields = array();
 118
 119                 foreach ( $descriptor as $fieldname => $info ) {
 120                         $section = isset( $info['section'] )
 121                                 ? $info['section']
 122                                 : '';
 123
 124                         if ( isset( $info['type'] ) && $info['type'] == 'file' ) {
 125                                 $this->mUseMultipart = true;
 126                         }
 127
 128                         $field = self::loadInputFromParameters( $fieldname, $info );
 129                         $field->mParent = $this;
 130
 131                         $setSection =& $loadedDescriptor;
 132                         if ( $section ) {
 133                                 $sectionParts = explode( '/', $section );
 134
 135                                 while ( count( $sectionParts ) ) {
 136                                         $newName = array_shift( $sectionParts );
 137
 138                                         if ( !isset( $setSection[$newName] ) ) {
 139                                                 $setSection[$newName] = array();
 140                                         }
 141
 142                                         $setSection =& $setSection[$newName];
 143                                 }
 144                         }
 145
 146                         $setSection[$fieldname] = $field;
 147                         $this->mFlatFields[$fieldname] = $field;
 148                 }
 149
 150                 $this->mFieldTree = $loadedDescriptor;
 151         }
 152
 153         /**
 154          * Add the HTMLForm-specific JavaScript, if it hasn't been
 155          * done already.
 156          */
 157         static function addJS() {
 158                 if ( self::$jsAdded ) return;
 159
 160                 global $wgOut;
 161
 162                 $wgOut->addModules( 'mediawiki.legacy.htmlform' );
 163         }
 164
 165         /**
 166          * Initialise a new Object for the field
 167          * @param $descriptor input Descriptor, as described above
 168          * @return HTMLFormField subclass
 169          */
 170         static function loadInputFromParameters( $fieldname, $descriptor ) {
 171                 if ( isset( $descriptor['class'] ) ) {
 172                         $class = $descriptor['class'];
 173                 } elseif ( isset( $descriptor['type'] ) ) {
 174                         $class = self::$typeMappings[$descriptor['type']];
 175                         $descriptor['class'] = $class;
 176                 }
 177
 178                 if ( !$class ) {
 179                         throw new MWException( "Descriptor with no class: " . print_r( $descriptor, true ) );
 180                 }
 181
 182                 $descriptor['fieldname'] = $fieldname;
 183
 184                 $obj = new $class( $descriptor );
 185
 186                 return $obj;
 187         }
 188
 189         /**
 190          * Prepare form for submission
 191          */
 192         function prepareForm() {
 193                 # Check if we have the info we need
 194                 if ( ! $this->mTitle ) {
 195                         throw new MWException( "You must call setTitle() on an HTMLForm" );
 196                 }
 197
 198                 // FIXME shouldn't this be closer to displayForm() ?
 199                 self::addJS();
 200
 201                 # Load data from the request.
 202                 $this->loadData();
 203         }
 204
 205         /**
 206          * Try submitting, with edit token check first
 207          * @return Status|boolean
 208          */
 209         function tryAuthorizedSubmit() {
 210                 global $wgUser, $wgRequest;
 211                 $editToken = $wgRequest->getVal( 'wpEditToken' );
 212
 213                 $result = false;
 214                 if ( $this->getMethod() != 'post' || $wgUser->matchEditToken( $editToken ) ) {
 215                         $result = $this->trySubmit();
 216                 }
 217                 return $result;
 218         }
 219
 220         /**
 221          * The here's-one-I-made-earlier option: do the submission if
 222          * posted, or display the form with or without funky valiation
 223          * errors
 224          * @return Bool or Status whether submission was successful.
 225          */
 226         function show() {
 227                 $this->prepareForm();
 228
 229                 $result = $this->tryAuthorizedSubmit();
 230                 if ( $result === true || ( $result instanceof Status && $result->isGood() ) ){
 231                         return $result;
 232                 }
 233
 234                 $this->displayForm( $result );
 235                 return false;
 236         }
 237
 238         /**
 239          * Validate all the fields, and call the submision callback
 240          * function if everything is kosher.
 241          * @return Mixed Bool true == Successful submission, Bool false
 242          *       == No submission attempted, anything else == Error to
 243          *       display.
 244          */
 245         function trySubmit() {
 246                 # Check for validation
 247                 foreach ( $this->mFlatFields as $fieldname => $field ) {
 248                         if ( !empty( $field->mParams['nodata'] ) ) {
 249                                 continue;
 250                         }
 251                         if ( $field->validate(
 252                                         $this->mFieldData[$fieldname],
 253                                         $this->mFieldData )
 254                                 !== true
 255                         ) {
 256                                 return isset( $this->mValidationErrorMessage )
 257                                         ? $this->mValidationErrorMessage
 258                                         : array( 'htmlform-invalid-input' );
 259                         }
 260                 }
 261
 262                 $callback = $this->mSubmitCallback;
 263
 264                 $data = $this->filterDataForSubmit( $this->mFieldData );
 265
 266                 $res = call_user_func( $callback, $data );
 267
 268                 return $res;
 269         }
 270
 271         /**
 272          * Set a callback to a function to do something with the form
 273          * once it's been successfully validated.
 274          * @param $cb String function name.  The function will be passed
 275          *       the output from HTMLForm::filterDataForSubmit, and must
 276          *       return Bool true on success, Bool false if no submission
 277          *       was attempted, or String HTML output to display on error.
 278          */
 279         function setSubmitCallback( $cb ) {
 280                 $this->mSubmitCallback = $cb;
 281         }
 282
 283         /**
 284          * Set a message to display on a validation error.
 285          * @param $msg Mixed String or Array of valid inputs to wfMsgExt()
 286          *       (so each entry can be either a String or Array)
 287          */
 288         function setValidationErrorMessage( $msg ) {
 289                 $this->mValidationErrorMessage = $msg;
 290         }
 291
 292         /**
 293          * Set the introductory message, overwriting any existing message.
 294          * @param $msg String complete text of message to display
 295          */
 296         function setIntro( $msg ) { $this->mPre = $msg; }
 297
 298         /**
 299          * Add introductory text.
 300          * @param $msg String complete text of message to display
 301          */
 302         function addPreText( $msg ) { $this->mPre .= $msg; }
 303
 304         /**
 305          * Add header text, inside the form.
 306          * @param $msg String complete text of message to display
 307          */
 308         function addHeaderText( $msg ) { $this->mHeader .= $msg; }
 309
 310         /**
 311          * Add footer text, inside the form.
 312          * @param $msg String complete text of message to display
 313          */
 314         function addFooterText( $msg ) { $this->mFooter .= $msg; }
 315
 316         /**
 317          * Add text to the end of the display.
 318          * @param $msg String complete text of message to display
 319          */
 320         function addPostText( $msg ) { $this->mPost .= $msg; }
 321
 322         /**
 323          * Add a hidden field to the output
 324          * @param $name String field name.  This will be used exactly as entered
 325          * @param $value String field value
 326          * @param $attribs Array
 327          */
 328         public function addHiddenField( $name, $value, $attribs = array() ) {
 329                 $attribs += array( 'name' => $name );
 330                 $this->mHiddenFields[] = array( $value, $attribs );
 331         }
 332
 333         public function addButton( $name, $value, $id = null, $attribs = null ) {
 334                 $this->mButtons[] = compact( 'name', 'value', 'id', 'attribs' );
 335         }
 336
 337         /**
 338          * Display the form (sending to wgOut), with an appropriate error
 339          * message or stack of messages, and any validation errors, etc.
 340          * @param $submitResult Mixed output from HTMLForm::trySubmit()
 341          */
 342         function displayForm( $submitResult ) {
 343                 global $wgOut;
 344
 345                 # For good measure (it is the default)
 346                 $wgOut->preventClickjacking();
 347
 348                 $html = ''
 349                         . $this->getErrors( $submitResult )
 350                         . $this->mHeader
 351                         . $this->getBody()
 352                         . $this->getHiddenFields()
 353                         . $this->getButtons()
 354                         . $this->mFooter
 355                 ;
 356
 357                 $html = $this->wrapForm( $html );
 358
 359                 $wgOut->addHTML( ''
 360                         . $this->mPre
 361                         . $html
 362                         . $this->mPost
 363                 );
 364         }
 365
 366         /**
 367          * Wrap the form innards in an actual <form> element
 368          * @param $html String HTML contents to wrap.
 369          * @return String wrapped HTML.
 370          */
 371         function wrapForm( $html ) {
 372
 373                 # Include a <fieldset> wrapper for style, if requested.
 374                 if ( $this->mWrapperLegend !== false ) {
 375                         $html = Xml::fieldset( $this->mWrapperLegend, $html );
 376                 }
 377                 # Use multipart/form-data
 378                 $encType = $this->mUseMultipart
 379                         ? 'multipart/form-data'
 380                         : 'application/x-www-form-urlencoded';
 381                 # Attributes
 382                 $attribs = array(
 383                         'action'  => $this->getTitle()->getFullURL(),
 384                         'method'  => $this->mMethod,
 385                         'class'   => 'visualClear',
 386                         'enctype' => $encType,
 387                 );
 388                 if ( !empty( $this->mId ) ) {
 389                         $attribs['id'] = $this->mId;
 390                 }
 391
 392                 return Html::rawElement( 'form', $attribs, $html );
 393         }
 394
 395         /**
 396          * Get the hidden fields that should go inside the form.
 397          * @return String HTML.
 398          */
 399         function getHiddenFields() {
 400                 global $wgUser;
 401
 402                 $html = '';
 403
 404                 if( $this->getMethod() == 'post' ){
 405                         $html .= Html::hidden( 'wpEditToken', $wgUser->editToken(), array( 'id' => 'wpEditToken' ) ) . "\n";
 406                         $html .= Html::hidden( 'title', $this->getTitle()->getPrefixedText() ) . "\n";
 407                 }
 408
 409                 foreach ( $this->mHiddenFields as $data ) {
 410                         list( $value, $attribs ) = $data;
 411                         $html .= Html::hidden( $attribs['name'], $value, $attribs ) . "\n";
 412                 }
 413
 414                 return $html;
 415         }
 416
 417         /**
 418          * Get the submit and (potentially) reset buttons.
 419          * @return String HTML.
 420          */
 421         function getButtons() {
 422                 $html = '';
 423                 $attribs = array();
 424
 425                 if ( isset( $this->mSubmitID ) ) {
 426                         $attribs['id'] = $this->mSubmitID;
 427                 }
 428
 429                 if ( isset( $this->mSubmitName ) ) {
 430                         $attribs['name'] = $this->mSubmitName;
 431                 }
 432
 433                 if ( isset( $this->mSubmitTooltip ) ) {
 434                         global $wgUser;
 435                         $attribs += $wgUser->getSkin()->tooltipAndAccessKeyAttribs( $this->mSubmitTooltip );
 436                 }
 437
 438                 $attribs['class'] = 'mw-htmlform-submit';
 439
 440                 $html .= Xml::submitButton( $this->getSubmitText(), $attribs ) . "\n";
 441
 442                 if ( $this->mShowReset ) {
 443                         $html .= Html::element(
 444                                 'input',
 445                                 array(
 446                                         'type' => 'reset',
 447                                         'value' => wfMsg( 'htmlform-reset' )
 448                                 )
 449                         ) . "\n";
 450                 }
 451
 452                 foreach ( $this->mButtons as $button ) {
 453                         $attrs = array(
 454                                 'type'  => 'submit',
 455                                 'name'  => $button['name'],
 456                                 'value' => $button['value']
 457                         );
 458
 459                         if ( $button['attribs'] ) {
 460                                 $attrs += $button['attribs'];
 461                         }
 462
 463                         if ( isset( $button['id'] ) ) {
 464                                 $attrs['id'] = $button['id'];
 465                         }
 466
 467                         $html .= Html::element( 'input', $attrs );
 468                 }
 469
 470                 return $html;
 471         }
 472
 473         /**
 474          * Get the whole body of the form.
 475          */
 476         function getBody() {
 477                 return $this->displaySection( $this->mFieldTree );
 478         }
 479
 480         /**
 481          * Format and display an error message stack.
 482          * @param $errors Mixed String or Array of message keys
 483          * @return String
 484          */
 485         function getErrors( $errors ) {
 486                 if ( $errors instanceof Status ) {
 487                         global $wgOut;
 488                         $errorstr = $wgOut->parse( $errors->getWikiText() );
 489                 } elseif ( is_array( $errors ) ) {
 490                         $errorstr = $this->formatErrors( $errors );
 491                 } else {
 492                         $errorstr = $errors;
 493                 }
 494
 495                 return $errorstr
 496                         ? Html::rawElement( 'div', array( 'class' => 'error' ), $errorstr )
 497                         : '';
 498         }
 499
 500         /**
 501          * Format a stack of error messages into a single HTML string
 502          * @param $errors Array of message keys/values
 503          * @return String HTML, a <ul> list of errors
 504          */
 505         static function formatErrors( $errors ) {
 506                 $errorstr = '';
 507
 508                 foreach ( $errors as $error ) {
 509                         if ( is_array( $error ) ) {
 510                                 $msg = array_shift( $error );
 511                         } else {
 512                                 $msg = $error;
 513                                 $error = array();
 514                         }
 515
 516                         $errorstr .= Html::rawElement(
 517                                 'li',
 518                                 null,
 519                                 wfMsgExt( $msg, array( 'parseinline' ), $error )
 520                         );
 521                 }
 522
 523                 $errorstr = Html::rawElement( 'ul', array(), $errorstr );
 524
 525                 return $errorstr;
 526         }
 527
 528         /**
 529          * Set the text for the submit button
 530          * @param $t String plaintext.
 531          */
 532         function setSubmitText( $t ) {
 533                 $this->mSubmitText = $t;
 534         }
 535
 536         /**
 537          * Get the text for the submit button, either customised or a default.
 538          * @return unknown_type
 539          */
 540         function getSubmitText() {
 541                 return $this->mSubmitText
 542                         ? $this->mSubmitText
 543                         : wfMsg( 'htmlform-submit' );
 544         }
 545
 546         public function setSubmitName( $name ) {
 547                 $this->mSubmitName = $name;
 548         }
 549
 550         public function setSubmitTooltip( $name ) {
 551                 $this->mSubmitTooltip = $name;
 552         }
 553
 554         /**
 555          * Set the id for the submit button.
 556          * @param $t String.  FIXME: Integrity is *not* validated
 557          */
 558         function setSubmitID( $t ) {
 559                 $this->mSubmitID = $t;
 560         }
 561
 562         public function setId( $id ) {
 563                 $this->mId = $id;
 564         }
 565         /**
 566          * Prompt the whole form to be wrapped in a <fieldset>, with
 567          * this text as its <legend> element.
 568          * @param $legend String HTML to go inside the <legend> element.
 569          *       Will be escaped
 570          */
 571         public function setWrapperLegend( $legend ) { $this->mWrapperLegend = $legend; }
 572
 573         /**
 574          * Set the prefix for various default messages
 575          * TODO: currently only used for the <fieldset> legend on forms
 576          * with multiple sections; should be used elsewhre?
 577          * @param $p String
 578          */
 579         function setMessagePrefix( $p ) {
 580                 $this->mMessagePrefix = $p;
 581         }
 582
 583         /**
 584          * Set the title for form submission
 585          * @param $t Title of page the form is on/should be posted to
 586          */
 587         function setTitle( $t ) {
 588                 $this->mTitle = $t;
 589         }
 590
 591         /**
 592          * Get the title
 593          * @return Title
 594          */
 595         function getTitle() {
 596                 return $this->mTitle;
 597         }
 598
 599         /**
 600          * Set the method used to submit the form
 601          * @param $method String
 602          */
 603         public function setMethod( $method='post' ){
 604                 $this->mMethod = $method;
 605         }
 606
 607         public function getMethod(){
 608                 return $this->mMethod;
 609         }
 610
 611         /**
 612          * TODO: Document
 613          * @param $fields
 614          */
 615         function displaySection( $fields, $sectionName = '' ) {
 616                 $tableHtml = '';
 617                 $subsectionHtml = '';
 618                 $hasLeftColumn = false;
 619
 620                 foreach ( $fields as $key => $value ) {
 621                         if ( is_object( $value ) ) {
 622                                 $v = empty( $value->mParams['nodata'] )
 623                                         ? $this->mFieldData[$key]
 624                                         : $value->getDefault();
 625                                 $tableHtml .= $value->getTableRow( $v );
 626
 627                                 if ( $value->getLabel() != '&#160;' )
 628                                         $hasLeftColumn = true;
 629                         } elseif ( is_array( $value ) ) {
 630                                 $section = $this->displaySection( $value, $key );
 631                                 $legend = wfMsg( "{$this->mMessagePrefix}-$key" );
 632                                 $subsectionHtml .= Xml::fieldset( $legend, $section ) . "\n";
 633                         }
 634                 }
 635
 636                 $classes = array();
 637
 638                 if ( !$hasLeftColumn ) { // Avoid strange spacing when no labels exist
 639                         $classes[] = 'mw-htmlform-nolabel';
 640                 }
 641
 642                 $attribs = array(
 643                         'class' => implode( ' ', $classes ),
 644                 );
 645
 646                 if ( $sectionName ) {
 647                         $attribs['id'] = Sanitizer::escapeId( "mw-htmlform-$sectionName" );
 648                 }
 649
 650                 $tableHtml = Html::rawElement( 'table', $attribs,
 651                         Html::rawElement( 'tbody', array(), "\n$tableHtml\n" ) ) . "\n";
 652
 653                 return $subsectionHtml . "\n" . $tableHtml;
 654         }
 655
 656         /**
 657          * Construct the form fields from the Descriptor array
 658          */
 659         function loadData() {
 660                 global $wgRequest;
 661
 662                 $fieldData = array();
 663
 664                 foreach ( $this->mFlatFields as $fieldname => $field ) {
 665                         if ( !empty( $field->mParams['nodata'] ) ) {
 666                                 continue;
 667                         } elseif ( !empty( $field->mParams['disabled'] ) ) {
 668                                 $fieldData[$fieldname] = $field->getDefault();
 669                         } else {
 670                                 $fieldData[$fieldname] = $field->loadDataFromRequest( $wgRequest );
 671                         }
 672                 }
 673
 674                 # Filter data.
 675                 foreach ( $fieldData as $name => &$value ) {
 676                         $field = $this->mFlatFields[$name];
 677                         $value = $field->filter( $value, $this->mFlatFields );
 678                 }
 679
 680                 $this->mFieldData = $fieldData;
 681         }
 682
 683         /**
 684          * Stop a reset button being shown for this form
 685          * @param $suppressReset Bool set to false to re-enable the
 686          *       button again
 687          */
 688         function suppressReset( $suppressReset = true ) {
 689                 $this->mShowReset = !$suppressReset;
 690         }
 691
 692         /**
 693          * Overload this if you want to apply special filtration routines
 694          * to the form as a whole, after it's submitted but before it's
 695          * processed.
 696          * @param $data
 697          * @return unknown_type
 698          */
 699         function filterDataForSubmit( $data ) {
 700                 return $data;
 701         }
 702 }
 703
 704 /**
 705  * The parent class to generate form fields.  Any field type should
 706  * be a subclass of this.
 707  */
 708 abstract class HTMLFormField {
 709
 710         protected $mValidationCallback;
 711         protected $mFilterCallback;
 712         protected $mName;
 713         public $mParams;
 714         protected $mLabel;      # String label.  Set on construction
 715         protected $mID;
 716         protected $mClass = '';
 717         protected $mDefault;
 718         public $mParent;
 719
 720         /**
 721          * This function must be implemented to return the HTML to generate
 722          * the input object itself.  It should not implement the surrounding
 723          * table cells/rows, or labels/help messages.
 724          * @param $value String the value to set the input to; eg a default
 725          *       text for a text input.
 726          * @return String valid HTML.
 727          */
 728         abstract function getInputHTML( $value );
 729
 730         /**
 731          * Override this function to add specific validation checks on the
 732          * field input.  Don't forget to call parent::validate() to ensure
 733          * that the user-defined callback mValidationCallback is still run
 734          * @param $value String the value the field was submitted with
 735          * @param $alldata Array the data collected from the form
 736          * @return Mixed Bool true on success, or String error to display.
 737          */
 738         function validate( $value, $alldata ) {
 739                 if ( isset( $this->mValidationCallback ) ) {
 740                         return call_user_func( $this->mValidationCallback, $value, $alldata );
 741                 }
 742
 743                 if ( isset( $this->mParams['required'] ) && $value === '' ) {
 744                         return wfMsgExt( 'htmlform-required', 'parseinline' );
 745                 }
 746
 747                 return true;
 748         }
 749
 750         function filter( $value, $alldata ) {
 751                 if ( isset( $this->mFilterCallback ) ) {
 752                         $value = call_user_func( $this->mFilterCallback, $value, $alldata );
 753                 }
 754
 755                 return $value;
 756         }
 757
 758         /**
 759          * Should this field have a label, or is there no input element with the
 760          * appropriate id for the label to point to?
 761          *
 762          * @return bool True to output a label, false to suppress
 763          */
 764         protected function needsLabel() {
 765                 return true;
 766         }
 767
 768         /**
 769          * Get the value that this input has been set to from a posted form,
 770          * or the input's default value if it has not been set.
 771          * @param $request WebRequest
 772          * @return String the value
 773          */
 774         function loadDataFromRequest( $request ) {
 775                 if ( $request->getCheck( $this->mName ) ) {
 776                         return $request->getText( $this->mName );
 777                 } else {
 778                         return $this->getDefault();
 779                 }
 780         }
 781
 782         /**
 783          * Initialise the object
 784          * @param $params Associative Array. See HTMLForm doc for syntax.
 785          */
 786         function __construct( $params ) {
 787                 $this->mParams = $params;
 788
 789                 # Generate the label from a message, if possible
 790                 if ( isset( $params['label-message'] ) ) {
 791                         $msgInfo = $params['label-message'];
 792
 793                         if ( is_array( $msgInfo ) ) {
 794                                 $msg = array_shift( $msgInfo );
 795                         } else {
 796                                 $msg = $msgInfo;
 797                                 $msgInfo = array();
 798                         }
 799
 800                         $this->mLabel = wfMsgExt( $msg, 'parseinline', $msgInfo );
 801                 } elseif ( isset( $params['label'] ) ) {
 802                         $this->mLabel = $params['label'];
 803                 }
 804
 805                 $this->mName = "wp{$params['fieldname']}";
 806                 if ( isset( $params['name'] ) ) {
 807                         $this->mName = $params['name'];
 808                 }
 809
 810                 $validName = Sanitizer::escapeId( $this->mName );
 811                 if ( $this->mName != $validName && !isset( $params['nodata'] ) ) {
 812                         throw new MWException( "Invalid name '{$this->mName}' passed to " . __METHOD__ );
 813                 }
 814
 815                 $this->mID = "mw-input-{$this->mName}";
 816
 817                 if ( isset( $params['default'] ) ) {
 818                         $this->mDefault = $params['default'];
 819                 }
 820
 821                 if ( isset( $params['id'] ) ) {
 822                         $id = $params['id'];
 823                         $validId = Sanitizer::escapeId( $id );
 824
 825                         if ( $id != $validId ) {
 826                                 throw new MWException( "Invalid id '$id' passed to " . __METHOD__ );
 827                         }
 828
 829                         $this->mID = $id;
 830                 }
 831
 832                 if ( isset( $params['cssclass'] ) ) {
 833                         $this->mClass = $params['cssclass'];
 834                 }
 835
 836                 if ( isset( $params['validation-callback'] ) ) {
 837                         $this->mValidationCallback = $params['validation-callback'];
 838                 }
 839
 840                 if ( isset( $params['filter-callback'] ) ) {
 841                         $this->mFilterCallback = $params['filter-callback'];
 842                 }
 843         }
 844
 845         /**
 846          * Get the complete table row for the input, including help text,
 847          * labels, and whatever.
 848          * @param $value String the value to set the input to.
 849          * @return String complete HTML table row.
 850          */
 851         function getTableRow( $value ) {
 852                 # Check for invalid data.
 853                 global $wgRequest;
 854
 855                 $errors = $this->validate( $value, $this->mParent->mFieldData );
 856
 857                 $cellAttributes = array();
 858                 $verticalLabel = false;
 859
 860                 if ( !empty($this->mParams['vertical-label']) ) {
 861                         $cellAttributes['colspan'] = 2;
 862                         $verticalLabel = true;
 863                 }
 864
 865                 if ( $errors === true || ( !$wgRequest->wasPosted() && ( $this->mParent->getMethod() == 'post' ) ) ) {
 866                         $errors = '';
 867                 } else {
 868                         $errors = Html::rawElement( 'span', array( 'class' => 'error' ), $errors );
 869                 }
 870
 871                 $label = $this->getLabelHtml( $cellAttributes );
 872                 $field = Html::rawElement(
 873                         'td',
 874                         array( 'class' => 'mw-input' ) + $cellAttributes,
 875                         $this->getInputHTML( $value ) . "\n$errors"
 876                 );
 877
 878                 $fieldType = get_class( $this );
 879
 880                 if ($verticalLabel) {
 881                         $html = Html::rawElement( 'tr',
 882                                 array( 'class' => 'mw-htmlform-vertical-label' ), $label );
 883                         $html .= Html::rawElement( 'tr',
 884                                 array( 'class' => "mw-htmlform-field-$fieldType {$this->mClass}" ),
 885                                 $field );
 886                 } else {
 887                         $html = Html::rawElement( 'tr',
 888                                 array( 'class' => "mw-htmlform-field-$fieldType {$this->mClass}" ),
 889                                 $label . $field );
 890                 }
 891
 892                 $helptext = null;
 893
 894                 if ( isset( $this->mParams['help-message'] ) ) {
 895                         $msg = $this->mParams['help-message'];
 896                         $helptext = wfMsgExt( $msg, 'parseinline' );
 897                         if ( wfEmptyMsg( $msg, $helptext ) ) {
 898                                 # Never mind
 899                                 $helptext = null;
 900                         }
 901                 } elseif ( isset( $this->mParams['help'] ) ) {
 902                         $helptext = $this->mParams['help'];
 903                 }
 904
 905                 if ( !is_null( $helptext ) ) {
 906                         $row = Html::rawElement( 'td', array( 'colspan' => 2, 'class' => 'htmlform-tip' ),
 907                                 $helptext );
 908                         $row = Html::rawElement( 'tr', array(), $row );
 909                         $html .= "$row\n";
 910                 }
 911
 912                 return $html;
 913         }
 914
 915         function getLabel() {
 916                 return $this->mLabel;
 917         }
 918         function getLabelHtml( $cellAttributes = array() ) {
 919                 # Don't output a for= attribute for labels with no associated input.
 920                 # Kind of hacky here, possibly we don't want these to be <label>s at all.
 921                 $for = array();
 922
 923                 if ( $this->needsLabel() ) {
 924                         $for['for'] = $this->mID;
 925                 }
 926
 927                 return Html::rawElement( 'td', array( 'class' => 'mw-label' ) + $cellAttributes,
 928                         Html::rawElement( 'label', $for, $this->getLabel() )
 929                 );
 930         }
 931
 932         function getDefault() {
 933                 if ( isset( $this->mDefault ) ) {
 934                         return $this->mDefault;
 935                 } else {
 936                         return null;
 937                 }
 938         }
 939
 940         /**
 941          * Returns the attributes required for the tooltip and accesskey.
 942          *
 943          * @return array Attributes
 944          */
 945         public function getTooltipAndAccessKey() {
 946                 if ( empty( $this->mParams['tooltip'] ) ) {
 947                         return array();
 948                 }
 949
 950                 global $wgUser;
 951
 952                 return $wgUser->getSkin()->tooltipAndAccessKeyAttribs( $this->mParams['tooltip'] );
 953         }
 954
 955         /**
 956          * flatten an array of options to a single array, for instance,
 957          * a set of <options> inside <optgroups>.
 958          * @param $options Associative Array with values either Strings
 959          *       or Arrays
 960          * @return Array flattened input
 961          */
 962         public static function flattenOptions( $options ) {
 963                 $flatOpts = array();
 964
 965                 foreach ( $options as $value ) {
 966                         if ( is_array( $value ) ) {
 967                                 $flatOpts = array_merge( $flatOpts, self::flattenOptions( $value ) );
 968                         } else {
 969                                 $flatOpts[] = $value;
 970                         }
 971                 }
 972
 973                 return $flatOpts;
 974         }
 975 }
 976
 977 class HTMLTextField extends HTMLFormField {
 978         function getSize() {
 979                 return isset( $this->mParams['size'] )
 980                         ? $this->mParams['size']
 981                         : 45;
 982         }
 983
 984         function getInputHTML( $value ) {
 985                 $attribs = array(
 986                         'id' => $this->mID,
 987                         'name' => $this->mName,
 988                         'size' => $this->getSize(),
 989                         'value' => $value,
 990                 ) + $this->getTooltipAndAccessKey();
 991
 992                 if ( isset( $this->mParams['maxlength'] ) ) {
 993                         $attribs['maxlength'] = $this->mParams['maxlength'];
 994                 }
 995
 996                 if ( !empty( $this->mParams['disabled'] ) ) {
 997                         $attribs['disabled'] = 'disabled';
 998                 }
 999
1000                 # TODO: Enforce pattern, step, required, readonly on the server side as
1001                 # well
1002                 foreach ( array( 'min', 'max', 'pattern', 'title', 'step',
1003                 'placeholder' ) as $param ) {
1004                         if ( isset( $this->mParams[$param] ) ) {
1005                                 $attribs[$param] = $this->mParams[$param];
1006                         }
1007                 }
1008
1009                 foreach ( array( 'required', 'autofocus', 'multiple', 'readonly' ) as $param ) {
1010                         if ( isset( $this->mParams[$param] ) ) {
1011                                 $attribs[$param] = '';
1012                         }
1013                 }
1014
1015                 # Implement tiny differences between some field variants
1016                 # here, rather than creating a new class for each one which
1017                 # is essentially just a clone of this one.
1018                 if ( isset( $this->mParams['type'] ) ) {
1019                         switch ( $this->mParams['type'] ) {
1020                                 case 'email':
1021                                         $attribs['type'] = 'email';
1022                                         break;
1023                                 case 'int':
1024                                         $attribs['type'] = 'number';
1025                                         break;
1026                                 case 'float':
1027                                         $attribs['type'] = 'number';
1028                                         $attribs['step'] = 'any';
1029                                         break;
1030                                 # Pass through
1031                                 case 'password':
1032                                 case 'file':
1033                                         $attribs['type'] = $this->mParams['type'];
1034                                         break;
1035                         }
1036                 }
1037
1038                 return Html::element( 'input', $attribs );
1039         }
1040 }
1041 class HTMLTextAreaField extends HTMLFormField {
1042         function getCols() {
1043                 return isset( $this->mParams['cols'] )
1044                         ? $this->mParams['cols']
1045                         : 80;
1046         }
1047
1048         function getRows() {
1049                 return isset( $this->mParams['rows'] )
1050                         ? $this->mParams['rows']
1051                         : 25;
1052         }
1053
1054         function getInputHTML( $value ) {
1055                 $attribs = array(
1056                         'id' => $this->mID,
1057                         'name' => $this->mName,
1058                         'cols' => $this->getCols(),
1059                         'rows' => $this->getRows(),
1060                 ) + $this->getTooltipAndAccessKey();
1061
1062
1063                 if ( !empty( $this->mParams['disabled'] ) ) {
1064                         $attribs['disabled'] = 'disabled';
1065                 }
1066
1067                 if ( !empty( $this->mParams['readonly'] ) ) {
1068                         $attribs['readonly'] = 'readonly';
1069                 }
1070
1071                 foreach ( array( 'required', 'autofocus' ) as $param ) {
1072                         if ( isset( $this->mParams[$param] ) ) {
1073                                 $attribs[$param] = '';
1074                         }
1075                 }
1076
1077                 return Html::element( 'textarea', $attribs, $value );
1078         }
1079 }
1080
1081 /**
1082  * A field that will contain a numeric value
1083  */
1084 class HTMLFloatField extends HTMLTextField {
1085         function getSize() {
1086                 return isset( $this->mParams['size'] )
1087                         ? $this->mParams['size']
1088                         : 20;
1089         }
1090
1091         function validate( $value, $alldata ) {
1092                 $p = parent::validate( $value, $alldata );
1093
1094                 if ( $p !== true ) {
1095                         return $p;
1096                 }
1097
1098                 $value = trim( $value );
1099
1100                 # http://dev.w3.org/html5/spec/common-microsyntaxes.html#real-numbers
1101                 # with the addition that a leading '+' sign is ok.
1102                 if ( !preg_match( '/^((\+|\-)?\d+(\.\d+)?(E(\+|\-)?\d+)?)?$/i', $value ) ) {
1103                         return wfMsgExt( 'htmlform-float-invalid', 'parse' );
1104                 }
1105
1106                 # The "int" part of these message names is rather confusing.
1107                 # They make equal sense for all numbers.
1108                 if ( isset( $this->mParams['min'] ) ) {
1109                         $min = $this->mParams['min'];
1110
1111                         if ( $min > $value ) {
1112                                 return wfMsgExt( 'htmlform-int-toolow', 'parse', array( $min ) );
1113                         }
1114                 }
1115
1116                 if ( isset( $this->mParams['max'] ) ) {
1117                         $max = $this->mParams['max'];
1118
1119                         if ( $max < $value ) {
1120                                 return wfMsgExt( 'htmlform-int-toohigh', 'parse', array( $max ) );
1121                         }
1122                 }
1123
1124                 return true;
1125         }
1126 }
1127
1128 /**
1129  * A field that must contain a number
1130  */
1131 class HTMLIntField extends HTMLFloatField {
1132         function validate( $value, $alldata ) {
1133                 $p = parent::validate( $value, $alldata );
1134
1135                 if ( $p !== true ) {
1136                         return $p;
1137                 }
1138
1139                 # http://dev.w3.org/html5/spec/common-microsyntaxes.html#signed-integers
1140                 # with the addition that a leading '+' sign is ok. Note that leading zeros
1141                 # are fine, and will be left in the input, which is useful for things like
1142                 # phone numbers when you know that they are integers (the HTML5 type=tel
1143                 # input does not require its value to be numeric).  If you want a tidier
1144                 # value to, eg, save in the DB, clean it up with intval().
1145                 if ( !preg_match( '/^((\+|\-)?\d+)?$/', trim( $value ) )
1146                 ) {
1147                         return wfMsgExt( 'htmlform-int-invalid', 'parse' );
1148                 }
1149
1150                 return true;
1151         }
1152 }
1153
1154 /**
1155  * A checkbox field
1156  */
1157 class HTMLCheckField extends HTMLFormField {
1158         function getInputHTML( $value ) {
1159                 if ( !empty( $this->mParams['invert'] ) ) {
1160                         $value = !$value;
1161                 }
1162
1163                 $attr = $this->getTooltipAndAccessKey();
1164                 $attr['id'] = $this->mID;
1165
1166                 if ( !empty( $this->mParams['disabled'] ) ) {
1167                         $attr['disabled'] = 'disabled';
1168                 }
1169
1170                 return Xml::check( $this->mName, $value, $attr ) . '&#160;' .
1171                         Html::rawElement( 'label', array( 'for' => $this->mID ), $this->mLabel );
1172         }
1173
1174         /**
1175          * For a checkbox, the label goes on the right hand side, and is
1176          * added in getInputHTML(), rather than HTMLFormField::getRow()
1177          */
1178         function getLabel() {
1179                 return '&#160;';
1180         }
1181
1182         function loadDataFromRequest( $request ) {
1183                 $invert = false;
1184                 if ( isset( $this->mParams['invert'] ) && $this->mParams['invert'] ) {
1185                         $invert = true;
1186                 }
1187
1188                 // GetCheck won't work like we want for checks.
1189                 if ( $request->getCheck( 'wpEditToken' ) ) {
1190                         // XOR has the following truth table, which is what we want
1191                         // INVERT VALUE | OUTPUT
1192                         // true   true  | false
1193                         // false  true  | true
1194                         // false  false | false
1195                         // true   false | true
1196                         return $request->getBool( $this->mName ) xor $invert;
1197                 } else {
1198                         return $this->getDefault();
1199                 }
1200         }
1201 }
1202
1203 /**
1204  * A select dropdown field.  Basically a wrapper for Xmlselect class
1205  */
1206 class HTMLSelectField extends HTMLFormField {
1207         function validate( $value, $alldata ) {
1208                 $p = parent::validate( $value, $alldata );
1209
1210                 if ( $p !== true ) {
1211                         return $p;
1212                 }
1213
1214                 $validOptions = HTMLFormField::flattenOptions( $this->mParams['options'] );
1215
1216                 if ( in_array( $value, $validOptions ) )
1217                         return true;
1218                 else
1219                         return wfMsgExt( 'htmlform-select-badoption', 'parseinline' );
1220         }
1221
1222         function getInputHTML( $value ) {
1223                 $select = new XmlSelect( $this->mName, $this->mID, strval( $value ) );
1224
1225                 # If one of the options' 'name' is int(0), it is automatically selected.
1226                 # because PHP sucks and things int(0) == 'some string'.
1227                 # Working around this by forcing all of them to strings.
1228                 foreach( $this->mParams['options'] as $key => &$opt ){
1229                         if( is_int( $opt ) ){
1230                                 $opt = strval( $opt );
1231                         }
1232                 }
1233                 unset( $opt ); # PHP keeps $opt around as a reference, which is a bit scary
1234
1235                 if ( !empty( $this->mParams['disabled'] ) ) {
1236                         $select->setAttribute( 'disabled', 'disabled' );
1237                 }
1238
1239                 $select->addOptions( $this->mParams['options'] );
1240
1241                 return $select->getHTML();
1242         }
1243 }
1244
1245 /**
1246  * Select dropdown field, with an additional "other" textbox.
1247  */
1248 class HTMLSelectOrOtherField extends HTMLTextField {
1249         static $jsAdded = false;
1250
1251         function __construct( $params ) {
1252                 if ( !in_array( 'other', $params['options'], true ) ) {
1253                         $params['options'][wfMsg( 'htmlform-selectorother-other' )] = 'other';
1254                 }
1255
1256                 parent::__construct( $params );
1257         }
1258
1259         static function forceToStringRecursive( $array ) {
1260                 if ( is_array( $array ) ) {
1261                         return array_map( array( __CLASS__, 'forceToStringRecursive' ), $array );
1262                 } else {
1263                         return strval( $array );
1264                 }
1265         }
1266
1267         function getInputHTML( $value ) {
1268                 $valInSelect = false;
1269
1270                 if ( $value !== false ) {
1271                         $valInSelect = in_array(
1272                                 $value,
1273                                 HTMLFormField::flattenOptions( $this->mParams['options'] )
1274                         );
1275                 }
1276
1277                 $selected = $valInSelect ? $value : 'other';
1278
1279                 $opts = self::forceToStringRecursive( $this->mParams['options'] );
1280
1281                 $select = new XmlSelect( $this->mName, $this->mID, $selected );
1282                 $select->addOptions( $opts );
1283
1284                 $select->setAttribute( 'class', 'mw-htmlform-select-or-other' );
1285
1286                 $tbAttribs = array( 'id' => $this->mID . '-other', 'size' => $this->getSize() );
1287
1288                 if ( !empty( $this->mParams['disabled'] ) ) {
1289                         $select->setAttribute( 'disabled', 'disabled' );
1290                         $tbAttribs['disabled'] = 'disabled';
1291                 }
1292
1293                 $select = $select->getHTML();
1294
1295                 if ( isset( $this->mParams['maxlength'] ) ) {
1296                         $tbAttribs['maxlength'] = $this->mParams['maxlength'];
1297                 }
1298
1299                 $textbox = Html::input(
1300                         $this->mName . '-other',
1301                         $valInSelect ? '' : $value,
1302                         'text',
1303                         $tbAttribs
1304                 );
1305
1306                 return "$select<br />\n$textbox";
1307         }
1308
1309         function loadDataFromRequest( $request ) {
1310                 if ( $request->getCheck( $this->mName ) ) {
1311                         $val = $request->getText( $this->mName );
1312
1313                         if ( $val == 'other' ) {
1314                                 $val = $request->getText( $this->mName . '-other' );
1315                         }
1316
1317                         return $val;
1318                 } else {
1319                         return $this->getDefault();
1320                 }
1321         }
1322 }
1323
1324 /**
1325  * Multi-select field
1326  */
1327 class HTMLMultiSelectField extends HTMLFormField {
1328         function validate( $value, $alldata ) {
1329                 $p = parent::validate( $value, $alldata );
1330
1331                 if ( $p !== true ) {
1332                         return $p;
1333                 }
1334
1335                 if ( !is_array( $value ) ) {
1336                         return false;
1337                 }
1338
1339                 # If all options are valid, array_intersect of the valid options
1340                 # and the provided options will return the provided options.
1341                 $validOptions = HTMLFormField::flattenOptions( $this->mParams['options'] );
1342
1343                 $validValues = array_intersect( $value, $validOptions );
1344                 if ( count( $validValues ) == count( $value ) ) {
1345                         return true;
1346                 } else {
1347                         return wfMsgExt( 'htmlform-select-badoption', 'parseinline' );
1348                 }
1349         }
1350
1351         function getInputHTML( $value ) {
1352                 $html = $this->formatOptions( $this->mParams['options'], $value );
1353
1354                 return $html;
1355         }
1356
1357         function formatOptions( $options, $value ) {
1358                 $html = '';
1359
1360                 $attribs = array();
1361
1362                 if ( !empty( $this->mParams['disabled'] ) ) {
1363                         $attribs['disabled'] = 'disabled';
1364                 }
1365
1366                 foreach ( $options as $label => $info ) {
1367                         if ( is_array( $info ) ) {
1368                                 $html .= Html::rawElement( 'h1', array(), $label ) . "\n";
1369                                 $html .= $this->formatOptions( $info, $value );
1370                         } else {
1371                                 $thisAttribs = array( 'id' => "{$this->mID}-$info", 'value' => $info );
1372
1373                                 $checkbox = Xml::check(
1374                                         $this->mName . '[]',
1375                                         in_array( $info, $value, true ),
1376                                         $attribs + $thisAttribs );
1377                                 $checkbox .= '&#160;' . Html::rawElement( 'label', array( 'for' => "{$this->mID}-$info" ), $label );
1378
1379                                 $html .= $checkbox . '<br />';
1380                         }
1381                 }
1382
1383                 return $html;
1384         }
1385
1386         function loadDataFromRequest( $request ) {
1387                 # won't work with getCheck
1388                 if ( $request->getCheck( 'wpEditToken' ) ) {
1389                         $arr = $request->getArray( $this->mName );
1390
1391                         if ( !$arr ) {
1392                                 $arr = array();
1393                         }
1394
1395                         return $arr;
1396                 } else {
1397                         return $this->getDefault();
1398                 }
1399         }
1400
1401         function getDefault() {
1402                 if ( isset( $this->mDefault ) ) {
1403                         return $this->mDefault;
1404                 } else {
1405                         return array();
1406                 }
1407         }
1408
1409         protected function needsLabel() {
1410                 return false;
1411         }
1412 }
1413
1414 /**
1415  * Radio checkbox fields.
1416  */
1417 class HTMLRadioField extends HTMLFormField {
1418         function validate( $value, $alldata ) {
1419                 $p = parent::validate( $value, $alldata );
1420
1421                 if ( $p !== true ) {
1422                         return $p;
1423                 }
1424
1425                 if ( !is_string( $value ) && !is_int( $value ) ) {
1426                         return false;
1427                 }
1428
1429                 $validOptions = HTMLFormField::flattenOptions( $this->mParams['options'] );
1430
1431                 if ( in_array( $value, $validOptions ) ) {
1432                         return true;
1433                 } else {
1434                         return wfMsgExt( 'htmlform-select-badoption', 'parseinline' );
1435                 }
1436         }
1437
1438         /**
1439          * This returns a block of all the radio options, in one cell.
1440          * @see includes/HTMLFormField#getInputHTML()
1441          */
1442         function getInputHTML( $value ) {
1443                 $html = $this->formatOptions( $this->mParams['options'], $value );
1444
1445                 return $html;
1446         }
1447
1448         function formatOptions( $options, $value ) {
1449                 $html = '';
1450
1451                 $attribs = array();
1452                 if ( !empty( $this->mParams['disabled'] ) ) {
1453                         $attribs['disabled'] = 'disabled';
1454                 }
1455
1456                 # TODO: should this produce an unordered list perhaps?
1457                 foreach ( $options as $label => $info ) {
1458                         if ( is_array( $info ) ) {
1459                                 $html .= Html::rawElement( 'h1', array(), $label ) . "\n";
1460                                 $html .= $this->formatOptions( $info, $value );
1461                         } else {
1462                                 $id = Sanitizer::escapeId( $this->mID . "-$info" );
1463                                 $html .= Xml::radio(
1464                                         $this->mName,
1465                                         $info,
1466                                         $info == $value,
1467                                         $attribs + array( 'id' => $id )
1468                                 );
1469                                 $html .= '&#160;' .
1470                                                 Html::rawElement( 'label', array( 'for' => $id ), $label );
1471
1472                                 $html .= "<br />\n";
1473                         }
1474                 }
1475
1476                 return $html;
1477         }
1478
1479         protected function needsLabel() {
1480                 return false;
1481         }
1482 }
1483
1484 /**
1485  * An information field (text blob), not a proper input.
1486  */
1487 class HTMLInfoField extends HTMLFormField {
1488         function __construct( $info ) {
1489                 $info['nodata'] = true;
1490
1491                 parent::__construct( $info );
1492         }
1493
1494         function getInputHTML( $value ) {
1495                 return !empty( $this->mParams['raw'] ) ? $value : htmlspecialchars( $value );
1496         }
1497
1498         function getTableRow( $value ) {
1499                 if ( !empty( $this->mParams['rawrow'] ) ) {
1500                         return $value;
1501                 }
1502
1503                 return parent::getTableRow( $value );
1504         }
1505
1506         protected function needsLabel() {
1507                 return false;
1508         }
1509 }
1510
1511 class HTMLHiddenField extends HTMLFormField {
1512         public function __construct( $params ) {
1513                 parent::__construct( $params );
1514
1515                 # Per HTML5 spec, hidden fields cannot be 'required'
1516                 # http://dev.w3.org/html5/spec/states-of-the-type-attribute.html#hidden-state
1517                 unset( $this->mParams['required'] );
1518         }
1519
1520         public function getTableRow( $value ) {
1521                 $params = array();
1522                 if ( $this->mID ) {
1523                         $params['id'] = $this->mID;
1524                 }
1525
1526                 $this->mParent->addHiddenField(
1527                         $this->mName,
1528                         $this->mDefault,
1529                         $params
1530                 );
1531
1532                 return '';
1533         }
1534
1535         public function getInputHTML( $value ) { return ''; }
1536 }
1537
1538 /**
1539  * Add a submit button inline in the form (as opposed to
1540  * HTMLForm::addButton(), which will add it at the end).
1541  */
1542 class HTMLSubmitField extends HTMLFormField {
1543
1544         function __construct( $info ) {
1545                 $info['nodata'] = true;
1546                 parent::__construct( $info );
1547         }
1548
1549         function getInputHTML( $value ) {
1550                 return Xml::submitButton(
1551                         $value,
1552                         array(
1553                                 'class' => 'mw-htmlform-submit',
1554                                 'name' => $this->mName,
1555                                 'id' => $this->mID,
1556                         )
1557                 );
1558         }
1559
1560         protected function needsLabel() {
1561                 return false;
1562         }
1563
1564         /**
1565          * Button cannot be invalid
1566          */
1567         public function validate( $value, $alldata ){
1568                 return true;
1569         }
1570 }
1571
1572 class HTMLEditTools extends HTMLFormField {
1573         public function getInputHTML( $value ) {
1574                 return '';
1575         }
1576
1577         public function getTableRow( $value ) {
1578                 return "<tr><td></td><td class=\"mw-input\">"
1579                         . '<div class="mw-editTools">'
1580                         . wfMsgExt( empty( $this->mParams['message'] )
1581                                 ? 'edittools' : $this->mParams['message'],
1582                                 array( 'parse', 'content' ) )
1583                         . "</div></td></tr>\n";
1584         }
1585 }