1 files changed, 80 insertions, 0 deletions
diff --git a/www/wiki/extensions/SemanticMediaWiki/includes/dataitems/SMW_DI_Error.php b/www/wiki/extensions/SemanticMediaWiki/includes/dataitems/SMW_DI_Error.php
new file mode 100644
index 00000000..099b306a
--- /dev/null
+++ b/www/wiki/extensions/SemanticMediaWiki/includes/dataitems/SMW_DI_Error.php
@@ -0,0 +1,80 @@
+<?php
+/**
+ * @ingroup SMWDataItems
+ */
+
+/**
+ * This class implements error list data items. These data items are used to
+ * pass around lists of error messages within the application. They are not
+ * meant to be stored or exported, but they can be useful to a user.
+ *
+ * @since 1.6
+ *
+ * @author Markus Krötzsch
+ * @ingroup SMWDataItems
+ */
+class SMWDIError extends SMWDataItem {
+
+	/**
+	 * List of error messages. Should always be safe for HTML.
+	 * @var array of strings
+	 */
+	protected $m_errors;
+
+	/**
+	 * @var string
+	 */
+	private $userValue;
+
+	public function __construct( $errors, $userValue = '' ) {
+		$this->m_errors = $errors;
+		$this->userValue = $userValue;
+	}
+
+	public function getDIType() {
+		return SMWDataItem::TYPE_ERROR;
+	}
+
+	public function getErrors() {
+		return $this->m_errors;
+	}
+
+	/**
+	 * @since 3.0
+	 *
+	 * @return string
+	 */
+	public function getUserValue() {
+		return $this->userValue;
+	}
+
+	public function getSortKey() {
+		return 'error';
+	}
+
+	public function getString() {
+		return $this->getSerialization();
+	}
+
+	public function getSerialization() {
+		return serialize( $this->m_errors );
+	}
+
+	/**
+	 * Create a data item from the provided serialization string and type
+	 * ID.
+	 * @todo Be more careful with unserialization. It can create E_NOTICEs.
+	 * @return SMWDIError
+	 */
+	public static function doUnserialize( $serialization ) {
+		return new SMWDIError( unserialize( $serialization ) );
+	}
+
+	public function equals( SMWDataItem $di ) {
+		if ( $di->getDIType() !== SMWDataItem::TYPE_ERROR ) {
+			return false;
+		}
+
+		return $di->getSerialization() === $this->getSerialization();
+	}
+}