package com.vci.client.oq;

import javax.swing.JPanel;

import com.vci.client.common.providers.ServiceProvider;
import com.vci.client.oq.ui.QTPanel;
import com.vci.client.ui.frame.UIConstructorInterface;
import com.vci.corba.common.VCIError;
import com.vci.corba.query.ObjectQueryServicePrx;

public class QTClient implements UIConstructorInterface{
	private static ObjectQueryServicePrx qtService = null;
	private static QTClient qtClient = null;
	
	private static QTClient getInstance(){
		if(qtClient == null){
			qtClient = new QTClient();
		}
		return qtClient;
	}


	@Override
	public void destory() throws VCIError {
		// TODO Auto-generated method stub
		
	}

	@Override
	public void init() throws VCIError {
		if(qtService != null){
			return;
		}
		try {
			qtService = ServiceProvider.getOQService();
		} catch (Exception e) {
			e.printStackTrace();
			throw new VCIError("", new String[0]);
		}
	}

	@Override
	public JPanel start() throws VCIError {
		QTPanel.cleanInstance();
		QTPanel qtPanel = QTPanel.getInstance();
		return qtPanel;
	}

	public static ObjectQueryServicePrx getService() throws VCIError{
		if(qtService == null){
			try {
				QTClient.getInstance().init();
			} catch (VCIError e) {
				e.printStackTrace();
				throw new VCIError("", new String[0]);
			}
		}
		return qtService;
	}
}