diff --git a/component/viewer/src/main/java/one/nem/lacerta/component/viewer/ItemClickListener.java b/component/viewer/src/main/java/one/nem/lacerta/component/viewer/ItemClickListener.java
new file mode 100644
index 00000000..91026a39
--- /dev/null
+++ b/component/viewer/src/main/java/one/nem/lacerta/component/viewer/ItemClickListener.java
@@ -0,0 +1,5 @@
+package one.nem.lacerta.component.viewer;
+
+public interface ItemClickListener {
+    void onItemClick(String fileName); // DEBUG
+}