package org.argeo.cms.ui.internal;
   
   import org.argeo.api.NodeState;
   import org.osgi.framework.BundleActivator;
   import org.osgi.framework.BundleContext;
   import org.osgi.util.tracker.ServiceTracker;
   
   public class Activator implements BundleActivator {
   
  	// avoid dependency to RWT OSGi
  	private final static String CONTEXT_NAME_PROP = "contextName";
  
  	private static ServiceTracker<NodeState, NodeState> nodeState;
  
  	// @Override
  	public void start(BundleContext bc) throws Exception {
  		// UI
  //		bc.registerService(ApplicationConfiguration.class, new MaintenanceUi(),
  //				LangUtils.dico(CONTEXT_NAME_PROP, "system"));
  //		bc.registerService(ApplicationConfiguration.class, new UserUi(), LangUtils.dico(CONTEXT_NAME_PROP, "user"));
  
  		nodeState = new ServiceTracker<>(bc, NodeState.class, null);
  		nodeState.open();
  	}
  
  	@Override
  	public void stop(BundleContext context) throws Exception {
  		if (nodeState != null) {
  			nodeState.close();
  			nodeState = null;
  		}
  	}
  
  	public static NodeState getNodeState() {
  		return nodeState.getService();
  	}
  }