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<?php
/**
* Adds a generic button inline to the form. Does not do anything, you must add
* click handling code in JavaScript. Use a HTMLSubmitField if you merely
* wish to add a submit button to a form.
*
* Additional recognized configuration parameters include:
* - flags: OOUI flags for the button, see OOUI\FlaggedElement
* - buttonlabel-message: Message to use for the button display text, instead
* of the value from 'default'. Overrides 'buttonlabel' and 'buttonlabel-raw'.
* - buttonlabel: Text to display for the button display text, instead
* of the value from 'default'. Overrides 'buttonlabel-raw'.
* - buttonlabel-raw: HTMLto display for the button display text, instead
* of the value from 'default'.
* - formnovalidate: Set to true if clicking this button should suppress
* client-side form validation. Used in HTMLFormFieldCloner for add/remove
* buttons.
*
* @stable to extend
* @since 1.22
*/
class HTMLButtonField extends HTMLFormField {
protected $buttonType = 'button';
protected $buttonLabel = null;
/** @var array Flags to add to OOUI Button widget */
protected $mFlags = [];
protected $mFormnovalidate = false;
/*
* @stable to call
*/
public function __construct( $info ) {
$info['nodata'] = true;
$this->setShowEmptyLabel( false );
parent::__construct( $info );
if ( isset( $info['flags'] ) ) {
$this->mFlags = $info['flags'];
}
if ( isset( $info['formnovalidate'] ) ) {
$this->mFormnovalidate = $info['formnovalidate'];
}
# Generate the label from a message, if possible
if ( isset( $info['buttonlabel-message'] ) ) {
$this->buttonLabel = $this->getMessage( $info['buttonlabel-message'] )->parse();
} elseif ( isset( $info['buttonlabel'] ) ) {
if ( $info['buttonlabel'] === ' ' || $info['buttonlabel'] === "\u{00A0}" ) {
// Apparently some things set   directly and in an odd format
$this->buttonLabel = "\u{00A0}";
} else {
$this->buttonLabel = htmlspecialchars( $info['buttonlabel'] );
}
} elseif ( isset( $info['buttonlabel-raw'] ) ) {
$this->buttonLabel = $info['buttonlabel-raw'];
}
}
public function getInputHTML( $value ) {
$flags = '';
$prefix = 'mw-htmlform-';
if ( $this->mParent instanceof VFormHTMLForm ||
$this->mParent->getConfig()->get( 'UseMediaWikiUIEverywhere' )
) {
$prefix = 'mw-ui-';
// add mw-ui-button separately, so the descriptor doesn't need to set it
$flags .= ' ' . $prefix . 'button';
}
foreach ( $this->mFlags as $flag ) {
$flags .= ' ' . $prefix . $flag;
}
$attr = [
'class' => 'mw-htmlform-submit ' . $this->mClass . $flags,
'id' => $this->mID,
'type' => $this->buttonType,
'name' => $this->mName,
'value' => $this->getDefault(),
'formnovalidate' => $this->mFormnovalidate,
] + $this->getAttributes( [ 'disabled', 'tabindex' ] );
if ( $this->isBadIE() ) {
return Html::element( 'input', $attr );
} else {
return Html::rawElement( 'button', $attr,
$this->buttonLabel ?: htmlspecialchars( $this->getDefault() ) );
}
}
/**
* Get the OOUI widget for this field.
* @stable to override
* @param string $value
* @return OOUI\ButtonInputWidget
*/
public function getInputOOUI( $value ) {
return new OOUI\ButtonInputWidget( [
'name' => $this->mName,
'value' => $this->getDefault(),
'label' => !$this->isBadIE() && $this->buttonLabel
? new OOUI\HtmlSnippet( $this->buttonLabel )
: $this->getDefault(),
'type' => $this->buttonType,
'classes' => [ 'mw-htmlform-submit', $this->mClass ],
'id' => $this->mID,
'flags' => $this->mFlags,
'useInputTag' => $this->isBadIE(),
] + OOUI\Element::configFromHtmlAttributes(
$this->getAttributes( [ 'disabled', 'tabindex' ] )
) );
}
/**
* @inheritDoc
* @stable to override
*/
protected function needsLabel() {
return false;
}
/**
* Button cannot be invalid
* @stable to override
*
* @param string $value
* @param array $alldata
*
* @return bool|string|Message
*/
public function validate( $value, $alldata ) {
return true;
}
/**
* IE<8 has bugs with <button>, so we'll need to avoid them.
* @return bool Whether the request is from a bad version of IE
*/
private function isBadIE() {
$request = $this->mParent
? $this->mParent->getRequest()
: RequestContext::getMain()->getRequest();
return (bool)preg_match( '/MSIE [1-7]\./i', $request->getHeader( 'User-Agent' ) );
}
}
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