package foundation.json.tree;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import foundation.json.JSONBuilder;
import foundation.json.JType;

public class JArrayNode extends JNode implements Iterable<JObjectNode> {

	private List<JObjectNode> list;

	
	public JArrayNode(String fullName, String name, int level) {
		super(fullName, name, JType.Array, level);
		list = new ArrayList<JObjectNode>();
	}
	
	@Override
	public void toJSON(JSONBuilder builder) {
		builder.beginArray(name);
		
		for (JNode node: children) {
			node.toJSON(builder);
		}
		
		builder.endArray();
	}

	@Override
	public void toBand(JBand band) {
		for (JObjectNode jObject: list) {
			jObject.toBand(band);
		}
	}

	@Override
	protected void loadBandItem(JBand band, JBandItem item) {
		int itemLevel = level + 1;
		
		//1. 加载当前 Item
		JNode node = JNode.createInstance(this, item.getName(itemLevel), item.getType(itemLevel), itemLevel);
		node.loadBandItem(band, item);
		
		//2. 尝试加载后面的 Item
		while (band.hasNext(name, level)) {
			item = band.next();
			
			node = JNode.createInstance(this, item.getName(itemLevel), item.getType(itemLevel), itemLevel);
			node.loadBandItem(band, item);
		}
	}
	
	@Override
	public Iterator<JObjectNode> iterator() {
		return list.iterator();
	}

}