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<?php
namespace MediaWiki\HTMLForm\Field;
use MediaWiki\Widget\TagMultiselectWidget;
/**
* Implements a tag multiselect input field for arbitrary values.
*
* Besides the parameters recognized by HTMLTextField, additional recognized
* parameters are:
* allowArbitrary - (optional) Bool to allow arbitrary inputs
* allowedValues - (optional) Array of allowed values
*
* The result is the array of tags
*
* @stable to extend
* @note This widget is not likely to remain functional in non-OOUI forms.
*/
class HTMLTagMultiselectField extends HTMLTextField {
public function loadDataFromRequest( $request ) {
$value = $request->getText( $this->mName, $this->getDefault() ?? '' );
$tagsArray = explode( "\n", $value );
// Remove empty lines
$tagsArray = array_values( array_filter( $tagsArray, static function ( $tag ) {
return trim( $tag ) !== '';
} ) );
// Remove any duplicate tags
$uniqueTags = array_unique( $tagsArray );
// This function is expected to return a string
return implode( "\n", $uniqueTags );
}
public function validate( $value, $alldata ) {
if ( $value === null ) {
return false;
}
// $value is a string, because HTMLForm fields store their values as strings
$tagsArray = explode( "\n", $value );
if ( isset( $this->mParams['max'] ) && ( count( $tagsArray ) > $this->mParams['max'] ) ) {
return $this->msg( 'htmlform-multiselect-toomany', $this->mParams['max'] );
}
foreach ( $tagsArray as $tag ) {
$result = parent::validate( $tag, $alldata );
if ( $result !== true ) {
return $result;
}
if ( empty( $this->mParams['allowArbitrary'] ) && $tag ) {
$allowedValues = $this->mParams['allowedValues'] ?? [];
if ( !in_array( $tag, $allowedValues ) ) {
return $this->msg( 'htmlform-tag-not-allowed', $tag )->escaped();
}
}
}
return true;
}
public function getInputHTML( $value ) {
$this->mParent->getOutput()->enableOOUI();
return $this->getInputOOUI( $value );
}
public function getInputOOUI( $value ) {
$this->mParent->getOutput()->addModuleStyles( 'mediawiki.widgets.TagMultiselectWidget.styles' );
$params = [ 'name' => $this->mName ];
if ( isset( $this->mParams['id'] ) ) {
$params['id'] = $this->mParams['id'];
}
if ( isset( $this->mParams['disabled'] ) ) {
$params['disabled'] = $this->mParams['disabled'];
}
if ( isset( $this->mParams['default'] ) ) {
$params['default'] = $this->mParams['default'];
}
$params['placeholder'] = $this->mParams['placeholder'] ??
$this->msg( 'mw-widgets-tagmultiselect-placeholder' )->plain();
if ( isset( $this->mParams['max'] ) ) {
$params['tagLimit'] = $this->mParams['max'];
}
if ( isset( $this->mParams['allowArbitrary'] ) ) {
$params['allowArbitrary'] = $this->mParams['allowArbitrary'];
}
if ( isset( $this->mParams['allowedValues'] ) ) {
$params['allowedValues'] = $this->mParams['allowedValues'];
}
if ( isset( $this->mParams['input'] ) ) {
$params['input'] = $this->mParams['input'];
}
if ( $value !== null ) {
// $value is a string, but the widget expects an array
$params['default'] = $value === '' ? [] : explode( "\n", $value );
}
// Make the field auto-infusable when it's used inside a legacy HTMLForm rather than OOUIHTMLForm
$params['infusable'] = true;
$params['classes'] = [ 'mw-htmlform-autoinfuse' ];
return $this->getInputWidget( $params );
}
/**
* @inheritDoc
*/
protected function getInputWidget( $params ) {
$widget = new TagMultiselectWidget( $params );
$widget->setAttributes( [ 'data-mw-modules' => implode( ',', $this->getOOUIModules() ) ] );
return $widget;
}
protected function shouldInfuseOOUI() {
return true;
}
protected function getOOUIModules() {
return [ 'mediawiki.widgets.TagMultiselectWidget' ];
}
}
/** @deprecated class alias since 1.42 */
class_alias( HTMLTagMultiselectField::class, 'HTMLTagMultiselectField' );
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