package org.hwo.ui.servicelink.register;

import java.util.HashSet;
import java.util.Hashtable;
import java.util.LinkedList;

import javax.swing.JComponent;

import org.hwo.bitfields.BitField;
import org.hwo.io.servicelink.ServiceLink;
import org.hwo.ui.servicelink.register.IndexedListRegisterEditor.IndexedItem;
import org.hwo.xml.NodeListIterator;
import org.w3c.dom.Element;

public class IndexedListServiceRegister extends ServiceRegister {

	IndexedListRegisterEditor	editor;	
	Hashtable<Integer, IndexedItem>	items;
	
	public IndexedListServiceRegister(ServiceLink serviceLink)
	{
		super(serviceLink);
		editor = new IndexedListRegisterEditor();
		editor.setServiceRegister(this);
		
		items = new Hashtable<Integer, IndexedListRegisterEditor.IndexedItem>();
	}
	
	@Override
	public void setRegisterNode(Element registerNode) {
		super.setRegisterNode(registerNode);
		
		Element	listNode = (Element)registerNode.getElementsByTagName("List").item(0);
		
		LinkedList<IndexedItem> items = new LinkedList<IndexedListRegisterEditor.IndexedItem>();
		
		for (Element listItem: new NodeListIterator(listNode.getElementsByTagName("Item"))){
			IndexedItem item = new IndexedItem(Integer.parseInt(listItem.getAttribute("index")), listItem.getTextContent());
			items.add(item);
			this.items.put(item.getIndex(), item);
		}
		editor.setItems(items.toArray(new IndexedItem[0]));
	}
	
	private IndexedItem getIndexedItem(Integer index) {
		if (this.items.containsKey(index)) {
			return this.items.get(index);
		}
		IndexedItem unknown = new IndexedItem(index, "Unkown");
		return unknown;
	}
	
	@Override
	public String getTextRepresentation() {
		Integer i = readIntegerValue();
		if (i == null)
			return "";
		return getIndexedItem(i).toString();
	}

	@Override
	public JComponent getEditorComponent() {
		return editor;
	}

	@Override
	public void acceptEditorValue() {
		editor.writeValue();	
	}

	@Override
	public void updateEditorValue() {
		editor.readValue();
	}

}