package org.hwo.pulscounter;

import java.util.LinkedList;
import java.util.List;

import org.hwo.io.SerialPort;
import org.hwo.io.servicelink.ServiceLink;
import org.hwo.pulscounter.ui.AppSettingsListener;

public class PulsCounter2Application {
	
	static PulsCounter2Application _application;
	public static PulsCounter2Application getApplication(){
		if (_application == null)
			_application = new PulsCounter2Application();
		
		return _application;
	}
	
	SerialPort	serialPort;
	ServiceLink	serviceLink;
	
	List<AppSettingsListener> appSettingsListeners;
	
	public PulsCounter2Application(){
		appSettingsListeners = new LinkedList<AppSettingsListener>();
	}
	
	public void addAppSettingsListener(AppSettingsListener listener){
		appSettingsListeners.add(listener);
	}
	public void removeAppSettingsListener(AppSettingsListener listener){
		appSettingsListeners.remove(listener);
	}
	
	private void fireServiceLinkChanged(){
		for (AppSettingsListener l: appSettingsListeners){
			l.ServiceLinkChanged(serviceLink);
		}
	}
	
	public synchronized SerialPort getSerialPort() {
		return serialPort;
	}
	public synchronized void setSerialPort(SerialPort serialPort) {
		if (serviceLink != null){
			serviceLink.close();
			serviceLink = null;
		}
		this.serialPort = serialPort;
		
		fireServiceLinkChanged();
	}
	
	public synchronized ServiceLink getServiceLink() {
		if (serviceLink == null){
			if (serialPort != null){
				serviceLink = new ServiceLink(serialPort);
				serviceLink.getSerialPort().setTimeout(200);
			}
		}
		return serviceLink;
	}
	public synchronized void setServiceLink(ServiceLink serviceLink) {
		if (serviceLink != null){
			serviceLink.close();
		}
		this.serviceLink = serviceLink;
		
		fireServiceLinkChanged();
	}
	
	

}