public void init(Map whiteboard) { mWhiteBoard = whiteboard; // Get handle to broker mBroker = new ConfigBrokerProxy(); // Create a context mContext = (ConfigContext) mWhiteBoard.get("context"); mNodesListModel = new ConfigPtrListModel(mContext); mNodesListModel.addElementType(CLUSTER_NODE_TYPE); mBroker.addConfigListener(mNodesListModel); lstNodes.setModel(mNodesListModel); mHostnameField.setText(""); }