includes/htmlform/HTMLButtonField.php

   1 <?php
   2
   3 /**
   4  * Adds a generic button inline to the form. Does not do anything, you must add
   5  * click handling code in JavaScript. Use a HTMLSubmitField if you merely
   6  * wish to add a submit button to a form.
   7  *
   8  * Additional recognized configuration parameters include:
   9  * - flags: OOUI flags for the button, see OOUI\\FlaggedElement
  10  * - buttonlabel-message: Message to use for the button display text, instead
  11  *   of the value from 'default'. Overrides 'buttonlabel' and 'buttonlabel-raw'.
  12  * - buttonlabel: Text to display for the button display text, instead
  13  *   of the value from 'default'. Overrides 'buttonlabel-raw'.
  14  * - buttonlabel-raw: HTMLto display for the button display text, instead
  15  *   of the value from 'default'.
  16  *
  17  * Note that the buttonlabel parameters are not supported on IE6 and IE7 due to
  18  * bugs in those browsers. If detected, they will be served buttons using the
  19  * value of 'default' as the button label.
  20  *
  21  * @since 1.22
  22  */
  23 class HTMLButtonField extends HTMLFormField {
  24         protected $buttonType = 'button';
  25         protected $buttonLabel = null;
  26
  27         /** @var array $mFlags Flags to add to OOUI Button widget */
  28         protected $mFlags = array();
  29
  30         public function __construct( $info ) {
  31                 $info['nodata'] = true;
  32                 if ( isset( $info['flags'] ) ) {
  33                         $this->mFlags = $info['flags'];
  34                 }
  35
  36                 # Generate the label from a message, if possible
  37                 if ( isset( $info['buttonlabel-message'] ) ) {
  38                         $msgInfo = $info['buttonlabel-message'];
  39
  40                         if ( is_array( $msgInfo ) ) {
  41                                 $msg = array_shift( $msgInfo );
  42                         } else {
  43                                 $msg = $msgInfo;
  44                                 $msgInfo = array();
  45                         }
  46
  47                         $this->buttonLabel = $this->msg( $msg, $msgInfo )->parse();
  48                 } elseif ( isset( $info['buttonlabel'] ) ) {
  49                         if ( $info['buttonlabel'] === '&#160;' ) {
  50                                 // Apparently some things set &nbsp directly and in an odd format
  51                                 $this->buttonLabel = '&#160;';
  52                         } else {
  53                                 $this->buttonLabel = htmlspecialchars( $info['buttonlabel'] );
  54                         }
  55                 } elseif ( isset( $info['buttonlabel-raw'] ) ) {
  56                         $this->buttonLabel = $info['buttonlabel-raw'];
  57                 }
  58
  59                 parent::__construct( $info );
  60         }
  61
  62         public function getInputHTML( $value ) {
  63                 $flags = '';
  64                 $prefix = 'mw-htmlform-';
  65                 if ( $this->mParent instanceof VFormHTMLForm ||
  66                         $this->mParent->getConfig()->get( 'UseMediaWikiUIEverywhere' )
  67                 ) {
  68                         $prefix = 'mw-ui-';
  69                         // add mw-ui-button separately, so the descriptor doesn't need to set it
  70                         $flags .= ' ' . $prefix . 'button';
  71                 }
  72                 foreach ( $this->mFlags as $flag ) {
  73                         $flags .= ' ' . $prefix . $flag;
  74                 }
  75                 $attr = array(
  76                         'class' => 'mw-htmlform-submit ' . $this->mClass . $flags,
  77                         'id' => $this->mID,
  78                         'type' => $this->buttonType,
  79                         'name' => $this->mName,
  80                         'value' => $value,
  81                 ) + $this->getAttributes( array( 'disabled', 'tabindex' ) );
  82
  83                 if ( $this->isBadIE() ) {
  84                         return Html::element( 'input', $attr );
  85                 } else {
  86                         return Html::rawElement( 'button', $attr, $this->buttonLabel ?: htmlspecialchars( $value ) );
  87                 }
  88         }
  89
  90         /**
  91          * Get the OOUI widget for this field.
  92          * @param string $value
  93          * @return OOUI\ButtonInputWidget
  94          */
  95         public function getInputOOUI( $value ) {
  96                 return new OOUI\ButtonInputWidget( array(
  97                         'name' => $this->mName,
  98                         'value' => $value,
  99                         'label' => !$this->isBadIE() && $this->buttonLabel
 100                                 ? new OOUI\HtmlSnippet( $this->buttonLabel )
 101                                 : $value,
 102                         'type' => $this->buttonType,
 103                         'classes' => array( 'mw-htmlform-submit', $this->mClass ),
 104                         'id' => $this->mID,
 105                         'flags' => $this->mFlags,
 106                         'useInputTag' => $this->isBadIE(),
 107                 ) + $this->getAttributes( array( 'disabled', 'tabindex' ), array( 'tabindex' => 'tabIndex' ) ) );
 108         }
 109
 110         protected function needsLabel() {
 111                 return false;
 112         }
 113
 114         /**
 115          * Button cannot be invalid
 116          *
 117          * @param string $value
 118          * @param array $alldata
 119          *
 120          * @return bool
 121          */
 122         public function validate( $value, $alldata ) {
 123                 return true;
 124         }
 125
 126         /**
 127          * IE<8 has bugs with <button>, so we'll need to avoid them.
 128          * @return bool Whether the request is from a bad version of IE
 129          */
 130         private function isBadIE() {
 131                 $request = $this->mParent
 132                         ? $this->mParent->getRequest()
 133                         : RequestContext::getMain()->getRequest();
 134                 return preg_match( '/MSIE [1-7]\./i', $request->getHeader( 'User-Agent' ) );
 135         }
 136 }