1 files changed, 54 insertions, 0 deletions
diff --git a/Echo/includes/EchoOnWikiList.php b/Echo/includes/EchoOnWikiList.php
new file mode 100644
index 00000000..5bdc4dd6
--- /dev/null
+++ b/Echo/includes/EchoOnWikiList.php
@@ -0,0 +1,54 @@
+<?php
+
+/**
+ * Implements EchoContainmentList interface for sourcing a list of items from a wiki
+ * page. Uses the pages latest revision ID as cache key.
+ */
+class EchoOnWikiList implements EchoContainmentList {
+	/**
+	 * @var Title|null A title object representing the page to source the list from,
+	 *                        or null if the page does not exist.
+	 */
+	protected $title;
+
+	/**
+	 * @param int $titleNs An NS_* constant representing the mediawiki namespace of the page
+	 * @param string $titleString String portion of the wiki page title
+	 */
+	public function __construct( $titleNs, $titleString ) {
+		$title = Title::newFromText( $titleString, $titleNs );
+		if ( $title !== null && $title->getArticleId() ) {
+			$this->title = $title;
+		}
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	public function getValues() {
+		if ( !$this->title ) {
+			return [];
+		}
+
+		$article = WikiPage::newFromID( $this->title->getArticleId() );
+		if ( $article === null || !$article->exists() ) {
+			return [];
+		}
+		$text = ContentHandler::getContentText( $article->getContent() );
+		if ( $text === null ) {
+			return [];
+		}
+		return array_filter( array_map( 'trim', explode( "\n", $text ) ) );
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	public function getCacheKey() {
+		if ( !$this->title ) {
+			return '';
+		}
+
+		return $this->title->getLatestRevID();
+	}
+}