includes/htmlform/HTMLAutoCompleteSelectField.php

   1 <?php
   2
   3 /**
   4  * Text field for selecting a value from a large list of possible values, with
   5  * auto-completion and optionally with a select dropdown for selecting common
   6  * options.
   7  *
   8  * HTMLComboboxField implements most of the same functionality and should be
   9  * used instead, if possible.
  10  *
  11  * If one of 'options-messages', 'options', or 'options-message' is provided
  12  * and non-empty, the select dropdown will be shown. An 'other' key will be
  13  * appended using message 'htmlform-selectorother-other' if not already
  14  * present.
  15  *
  16  * Besides the parameters recognized by HTMLTextField, the following are
  17  * recognized:
  18  *   options-messages - As for HTMLSelectField
  19  *   options - As for HTMLSelectField
  20  *   options-message - As for HTMLSelectField
  21  *   autocomplete - Associative array mapping display text to values.
  22  *   autocomplete-messages - Like autocomplete, but keys are message names.
  23  *   require-match - Boolean, if true the value must be in the options or the
  24  *     autocomplete.
  25  *   other-message - Message to use instead of htmlform-selectorother-other for
  26  *      the 'other' message.
  27  *   other - Raw text to use for the 'other' message
  28  */
  29 class HTMLAutoCompleteSelectField extends HTMLTextField {
  30         protected $autocomplete = array();
  31
  32         function __construct( $params ) {
  33                 $params += array(
  34                         'require-match' => false,
  35                 );
  36
  37                 parent::__construct( $params );
  38
  39                 if ( array_key_exists( 'autocomplete-messages', $this->mParams ) ) {
  40                         foreach ( $this->mParams['autocomplete-messages'] as $key => $value ) {
  41                                 $key = $this->msg( $key )->plain();
  42                                 $this->autocomplete[$key] = strval( $value );
  43                         }
  44                 } elseif ( array_key_exists( 'autocomplete', $this->mParams ) ) {
  45                         foreach ( $this->mParams['autocomplete'] as $key => $value ) {
  46                                 $this->autocomplete[$key] = strval( $value );
  47                         }
  48                 }
  49                 if ( !is_array( $this->autocomplete ) || !$this->autocomplete ) {
  50                         throw new MWException( 'HTMLAutoCompleteSelectField called without any autocompletions' );
  51                 }
  52
  53                 $this->getOptions();
  54                 if ( $this->mOptions && !in_array( 'other', $this->mOptions, true ) ) {
  55                         if ( isset( $params['other-message'] ) ) {
  56                                 $msg = wfMessage( $params['other-message'] )->text();
  57                         } elseif ( isset( $params['other'] ) ) {
  58                                 $msg = $params['other'];
  59                         } else {
  60                                 $msg = wfMessage( 'htmlform-selectorother-other' )->text();
  61                         }
  62                         $this->mOptions[$msg] = 'other';
  63                 }
  64         }
  65
  66         function loadDataFromRequest( $request ) {
  67                 if ( $request->getCheck( $this->mName ) ) {
  68                         $val = $request->getText( $this->mName . '-select', 'other' );
  69
  70                         if ( $val === 'other' ) {
  71                                 $val = $request->getText( $this->mName );
  72                                 if ( isset( $this->autocomplete[$val] ) ) {
  73                                         $val = $this->autocomplete[$val];
  74                                 }
  75                         }
  76
  77                         return $val;
  78                 } else {
  79                         return $this->getDefault();
  80                 }
  81         }
  82
  83         function validate( $value, $alldata ) {
  84                 $p = parent::validate( $value, $alldata );
  85
  86                 if ( $p !== true ) {
  87                         return $p;
  88                 }
  89
  90                 $validOptions = HTMLFormField::flattenOptions( $this->getOptions() );
  91
  92                 if ( in_array( strval( $value ), $validOptions, true ) ) {
  93                         return true;
  94                 } elseif ( in_array( strval( $value ), $this->autocomplete, true ) ) {
  95                         return true;
  96                 } elseif ( $this->mParams['require-match'] ) {
  97                         return $this->msg( 'htmlform-select-badoption' )->parse();
  98                 }
  99
 100                 return true;
 101         }
 102
 103         // FIXME Ewww, this shouldn't be adding any attributes not requested in $list :(
 104         public function getAttributes( array $list, array $mappings = null ) {
 105                 $attribs = array(
 106                         'type' => 'text',
 107                         'data-autocomplete' => FormatJson::encode( array_keys( $this->autocomplete ) ),
 108                 ) + parent::getAttributes( $list, $mappings );
 109
 110                 if ( $this->getOptions() ) {
 111                         $attribs['data-hide-if'] = FormatJson::encode(
 112                                 array( '!==', $this->mName . '-select', 'other' )
 113                         );
 114                 }
 115
 116                 return $attribs;
 117         }
 118
 119         function getInputHTML( $value ) {
 120                 $oldClass = $this->mClass;
 121                 $this->mClass = (array)$this->mClass;
 122
 123                 $valInSelect = false;
 124                 $ret = '';
 125
 126                 if ( $this->getOptions() ) {
 127                         if ( $value !== false ) {
 128                                 $value = strval( $value );
 129                                 $valInSelect = in_array(
 130                                         $value, HTMLFormField::flattenOptions( $this->getOptions() ), true
 131                                 );
 132                         }
 133
 134                         $selected = $valInSelect ? $value : 'other';
 135                         $select = new XmlSelect( $this->mName . '-select', $this->mID . '-select', $selected );
 136                         $select->addOptions( $this->getOptions() );
 137                         $select->setAttribute( 'class', 'mw-htmlform-select-or-other' );
 138
 139                         if ( !empty( $this->mParams['disabled'] ) ) {
 140                                 $select->setAttribute( 'disabled', 'disabled' );
 141                         }
 142
 143                         if ( isset( $this->mParams['tabindex'] ) ) {
 144                                 $select->setAttribute( 'tabindex', $this->mParams['tabindex'] );
 145                         }
 146
 147                         $ret = $select->getHTML() . "<br />\n";
 148
 149                         $this->mClass[] = 'mw-htmlform-hide-if';
 150                 }
 151
 152                 if ( $valInSelect ) {
 153                         $value = '';
 154                 } else {
 155                         $key = array_search( strval( $value ), $this->autocomplete, true );
 156                         if ( $key !== false ) {
 157                                 $value = $key;
 158                         }
 159                 }
 160
 161                 $this->mClass[] = 'mw-htmlform-autocomplete';
 162                 $ret .= parent::getInputHTML( $valInSelect ? '' : $value );
 163                 $this->mClass = $oldClass;
 164
 165                 return $ret;
 166         }
 167
 168         /**
 169          * Get the OOUI version of this input.
 170          * @param string $value
 171          * @return false
 172          */
 173         function getInputOOUI( $value ) {
 174                 // To be implemented, for now override the function from HTMLTextField
 175                 return false;
 176         }
 177 }