Allow extensions to specify the list of special parameters

lib/private/activitymanager.php

@@ -167,6 +167,25 @@ class ActivityManager implements IManager {
 		return false;
 	}
 
+	/**
+	 * @param string $app
+	 * @param string $text
+	 * @return array|false
+	 */
+	function getSpecialParameterList($app, $text) {
+		foreach($this->extensions as $extension) {
+			$c = $extension();
+			if ($c instanceof IExtension) {
+				$specialParameter = $c->getSpecialParameterList($app, $text);
+				if (is_array($specialParameter)) {
+					return $specialParameter;
+				}
+			}
+		}
+
+		return false;
+	}
+
 	/**
 	 * @param string $type
 	 * @return string

lib/public/activity/iextension.php

@@ -79,6 +79,19 @@ interface IExtension {
 	 */
 	public function translate($app, $text, $params, $stripPath, $highlightParams, $languageCode);
 
+	/**
+	 * The extension can define the type of parameters for translation
+	 *
+	 * Currently known types are:
+	 * * file		=> will strip away the path of the file and add a tooltip with it
+	 * * username	=> will add the avatar of the user
+	 *
+	 * @param string $app
+	 * @param string $text
+	 * @return array|false
+	 */
+	function getSpecialParameterList($app, $text);
+
 	/**
 	 * A string naming the css class for the icon to be used can be returned.
 	 * If no icon is known for the given type false is to be returned.

lib/public/activity/imanager.php

@@ -99,6 +99,13 @@ interface IManager {
 	 */
 	function translate($app, $text, $params, $stripPath, $highlightParams, $languageCode);
 
+	/**
+	 * @param string $app
+	 * @param string $text
+	 * @return array|false
+	 */
+	function getSpecialParameterList($app, $text);
+
 	/**
 	 * @param string $type
 	 * @return string