1 files changed, 63 insertions, 0 deletions
diff --git a/extensions/Gadgets/includes/GadgetRepo.php b/extensions/Gadgets/includes/GadgetRepo.php
new file mode 100644
index 00000000..18bf5b51
--- /dev/null
+++ b/extensions/Gadgets/includes/GadgetRepo.php
@@ -0,0 +1,63 @@
+<?php
+
+abstract class GadgetRepo {
+
+	/**
+	 * @var GadgetRepo|null
+	 */
+	private static $instance;
+
+	/**
+	 * Get the ids of the gadgets provided by this repository
+	 *
+	 * @return string[]
+	 */
+	abstract public function getGadgetIds();
+
+	/**
+	 * Get the Gadget object for a given gadget id
+	 *
+	 * @param string $id
+	 * @throws InvalidArgumentException
+	 * @return Gadget
+	 */
+	abstract public function getGadget( $id );
+
+	/**
+	 * Get a list of gadgets sorted by category
+	 *
+	 * @return array array( 'category' => array( 'name' => $gadget ) )
+	 */
+	public function getStructuredList() {
+		$list = array();
+		foreach ( $this->getGadgetIds() as $id ) {
+			$gadget = $this->getGadget( $id );
+			$list[$gadget->getCategory()][$gadget->getName()] = $gadget;
+		}
+
+		return $list;
+	}
+
+	/**
+	 * Get the configured default GadgetRepo. Currently
+	 * this hardcodes MediaWikiGadgetsDefinitionRepo since
+	 * that is the only implementation
+	 *
+	 * @return GadgetRepo
+	 */
+	public static function singleton() {
+		if ( self::$instance === null ) {
+			self::$instance = new MediaWikiGadgetsDefinitionRepo();
+		}
+		return self::$instance;
+	}
+
+	/**
+	 * Should only be used by unit tests
+	 *
+	 * @param GadgetRepo|null $repo
+	 */
+	public static function setSingleton( $repo = null ) {
+		self::$instance = $repo;
+	}
+}