1 files changed, 15 insertions, 0 deletions

diff --git a/subprojects/language-web/src/main/java/tools/refinery/language/web/xtext/server/push/PrecomputationListener.java b/subprojects/language-web/src/main/java/tools/refinery/language/web/xtext/server/push/PrecomputationListener.java
new file mode 100644
index 00000000..79a284db
--- /dev/null
+++ b/subprojects/language-web/src/main/java/tools/refinery/language/web/xtext/server/push/PrecomputationListener.java
@@ -0,0 +1,15 @@
+package tools.refinery.language.web.xtext.server.push;
+
+import org.eclipse.xtext.web.server.IServiceResult;
+
+import tools.refinery.language.web.xtext.server.ResponseHandlerException;
+
+@FunctionalInterface
+public interface PrecomputationListener {
+        void onPrecomputedServiceResult(String resourceId, String stateId, String serviceName, IServiceResult serviceResult)
+                        throws ResponseHandlerException;
+
+        default void onSubscribeToPrecomputationEvents(String resourceId, PushWebDocument document) {
+                // Nothing to handle by default.
+        }
+}