includes/htmlform/HTMLTitleTextField.php

   1 <?php
   2
   3 use MediaWiki\Widget\TitleInputWidget;
   4
   5 /**
   6  * Implements a text input field for page titles.
   7  * Automatically does validation that the title is valid,
   8  * as well as autocompletion if using the OOUI display format.
   9  *
  10  * Note: Forms using GET requests will need to make sure the title value is not
  11  * an empty string.
  12  *
  13  * Optional parameters:
  14  * 'namespace' - Namespace the page must be in
  15  * 'relative' - If true and 'namespace' given, strip/add the namespace from/to the title as needed
  16  * 'creatable' - Whether to validate the title is creatable (not a special page)
  17  * 'exists' - Whether to validate that the title already exists
  18  *
  19  * @since 1.26
  20  */
  21 class HTMLTitleTextField extends HTMLTextField {
  22         public function __construct( $params ) {
  23                 $params += array(
  24                         'namespace' => false,
  25                         'relative' => false,
  26                         'creatable' => false,
  27                         'exists' => false,
  28                 );
  29
  30                 parent::__construct( $params );
  31         }
  32
  33         public function validate( $value, $alldata ) {
  34                 if ( $this->mParent->getMethod() === 'get' && $value === '' ) {
  35                         // If the form is a GET form and has no value, assume it hasn't been
  36                         // submitted yet, and skip validation
  37                         return parent::validate( $value, $alldata );
  38                 }
  39                 try {
  40                         if ( !$this->mParams['relative'] ) {
  41                                 $title = Title::newFromTextThrow( $value );
  42                         } else {
  43                                 // Can't use Title::makeTitleSafe(), because it doesn't throw useful exceptions
  44                                 global $wgContLang;
  45                                 $namespaceName = $wgContLang->getNsText( $this->mParams['namespace'] );
  46                                 $title = Title::newFromTextThrow( $namespaceName . ':' . $value );
  47                         }
  48                 } catch ( MalformedTitleException $e ) {
  49                         $msg = $this->msg( $e->getErrorMessage() );
  50                         $params = $e->getErrorMessageParameters();
  51                         if ( $params ) {
  52                                 $msg->params( $params );
  53                         }
  54                         return $msg->parse();
  55                 }
  56
  57                 $text = $title->getPrefixedText();
  58                 if ( $this->mParams['namespace'] !== false &&
  59                         !$title->inNamespace( $this->mParams['namespace'] )
  60                 ) {
  61                         return $this->msg( 'htmlform-title-badnamespace', $this->mParams['namespace'], $text )->parse();
  62                 }
  63
  64                 if ( $this->mParams['creatable'] && !$title->canExist() ) {
  65                         return $this->msg( 'htmlform-title-not-creatable', $text )->escaped();
  66                 }
  67
  68                 if ( $this->mParams['exists'] && !$title->exists() ) {
  69                         return $this->msg( 'htmlform-title-not-exists', $text )->parse();
  70                 }
  71
  72                 return parent::validate( $value, $alldata );
  73         }
  74
  75         protected function getInputWidget( $params ) {
  76                 $this->mParent->getOutput()->addModules( 'mediawiki.widgets' );
  77                 if ( $this->mParams['namespace'] !== false ) {
  78                         $params['namespace'] = $this->mParams['namespace'];
  79                 }
  80                 $params['relative'] = $this->mParams['relative'];
  81                 return new TitleInputWidget( $params );
  82         }
  83 }