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package org.geojsf.component;

import java.io.IOException;

import javax.faces.component.FacesComponent;
import javax.faces.component.UINamingContainer;
import javax.faces.component.behavior.ClientBehaviorHolder;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import javax.faces.event.AbortProcessingException;
import javax.faces.event.ComponentSystemEvent;
import javax.faces.event.ListenerFor;
import javax.faces.event.PostAddToViewEvent;

import org.geojsf.util.GeoJsfJsLoader;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

@FacesComponent(value="org.geojsf.component.Zoom")
@ListenerFor(systemEventClass=PostAddToViewEvent.class)
public class Zoom extends UINamingContainer implements ClientBehaviorHolder
{
	final static Logger logger = LoggerFactory.getLogger(Zoom.class);
	
	private String type, position;
	
	@Override
	public void processEvent(ComponentSystemEvent event) throws AbortProcessingException
	{
		if(event instanceof PostAddToViewEvent)
		{
			GeoJsfJsLoader.pushJsToHead(this.getFacesContext(),"control.js");
		}
		super.processEvent(event);
	}
	
	@Override
	public void encodeBegin(FacesContext ctx) throws IOException
	{
		ResponseWriter writer = ctx.getResponseWriter();
		writer.startElement("script", this);
		if (null==position)
		{
			position="left";
		}
		writer.writeText("GeoJsfControl.addZoom('" +type +"','" +position +"');", null); 
		writer.endElement("script");
		logger.info("adding " +type);
	}

	public String getType() {return type;}
	public void setType(String type) {this.type = type;}

	public String getPosition() {return position;}
	public void setPosition(String position) {this.position = position;}
}