From 664215d85c3222f5c2d9c1d7b2b1438f3548c6f7 Mon Sep 17 00:00:00 2001
From: Tony Crisci <tony@dubstepdish.com>
Date: Sun, 5 Nov 2017 12:07:33 -0500
Subject: [PATCH] Implement metamodel listener

fixes #13
---
 src/lib/src/palette/palette.component.ts | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/lib/src/palette/palette.component.ts b/src/lib/src/palette/palette.component.ts
index ab8c7bd..3fe7837 100644
--- a/src/lib/src/palette/palette.component.ts
+++ b/src/lib/src/palette/palette.component.ts
@@ -98,7 +98,11 @@ export class Palette implements OnInit, OnDestroy, OnChanges {
   private mouseMoveHanlder = (e : any) => this.handleDrag(e);
   private mouseUpHanlder = (e : any) => this.handleMouseUp(e);
 
-  private _metamodelListener : Flo.MetamodelListener;
+  private _metamodelListener : Flo.MetamodelListener = {
+    metadataError: (data) => {},
+    metadataAboutToChange: () => {},
+    metadataChanged: (data) => this.rebuildPalette()
+  };
 
   /**
    * The names of any groups in the palette that have been deliberately closed (the arrow clicked on)