1 files changed, 47 insertions, 0 deletions
diff --git a/includes/htmlform/HTMLUserTextField.php b/includes/htmlform/HTMLUserTextField.php
new file mode 100644
index 00000000..9617c0a3
--- /dev/null
+++ b/includes/htmlform/HTMLUserTextField.php
@@ -0,0 +1,47 @@
+<?php
+
+use MediaWiki\Widget\UserInputWidget;
+
+/**
+ * Implements a text input field for user names.
+ * Automatically auto-completes if using the OOUI display format.
+ *
+ * FIXME: Does not work for forms that support GET requests.
+ *
+ * Optional parameters:
+ * 'exists' - Whether to validate that the user already exists
+ *
+ * @since 1.26
+ */
+class HTMLUserTextField extends HTMLTextField {
+	public function __construct( $params ) {
+		$params += array(
+			'exists' => false,
+			'ipallowed' => false,
+		);
+
+		parent::__construct( $params );
+	}
+
+	public function validate( $value, $alldata ) {
+		// check, if a user exists with the given username
+		$user = User::newFromName( $value, false );
+
+		if ( !$user ) {
+			return $this->msg( 'htmlform-user-not-valid', $value )->parse();
+		} elseif (
+			( $this->mParams['exists'] && $user->getId() === 0 ) &&
+			!( $this->mParams['ipallowed'] && User::isIP( $value ) )
+		) {
+			return $this->msg( 'htmlform-user-not-exists', $user->getName() )->parse();
+		}
+
+		return parent::validate( $value, $alldata );
+	}
+
+	protected function getInputWidget( $params ) {
+		$this->mParent->getOutput()->addModules( 'mediawiki.widgets.UserInputWidget' );
+
+		return new UserInputWidget( $params );
+	}
+}