OOP2

package myMiniGUIGenarator;

import java.awt.GridLayout;

import java.awt.LayoutManager;

import java.lang.reflect.*;

import javax.swing.JComponent;

import javax.swing.JFrame;

import javax.swing.JPanel;

import org.omg.CORBA.PRIVATE_MEMBER;

import org.w3c.dom.Document;

import org.w3c.dom.Element;

import org.w3c.dom.Node;

import org.w3c.dom.NodeList;

public class DOMUIParser {

	private Element root;

	private JPanel app;

	private  JFrame f;

//TODO add constructor and main

//e.g. $dparser = new org.apache.xerces.parsers.DOMParser();

// 	   $document = new File(fileName);

	protected void buildUI(Document doc){

		root = doc.getDocumentElement();

		app = new JPanel();

		processNode(root, app);

		f = new JFrame();

		f.setTitle(getTitle());

		f.getContentPane().add(app);

		f.pack();

		f.setVisible(true);

	}

	private String getTitle() {

		NodeList children = root.getChildNodes();

		for (int i = 0; i < children.getLength(); i++) {

			if(children.item(i).getNodeName().equals("text"))

				return children.item(i).getNodeValue();

		}

		return null;

	}

	private String getLabel(Node wchild) {

		NodeList children = wchild.getChildNodes();

		for (int i = 0; i < children.getLength(); i++) {

			if(children.item(i).getNodeName().equals("text"))

				return children.item(i).getNodeValue();

		}

		return null;

	}

	private void processNode(Node n, JComponent container){

		if(n.getNodeType()==Node.ELEMENT_NODE)

			if(processWidgetElement((Element)n, container)) return;

		NodeList nl = n.getChildNodes();

		if(nl.getLength()>0)

			for(int i=0; i<nl.getLength(); i++)

				processNode(nl.item(i), container);

	}

	/* Processes a widget element, adds it to the container 

	 * @param e				an element describing a widget 

	 * @param container		the container to which the widget should be added

	 * @return 				true if the descendants of e are processed by this method

	 * 						false otherwise

	 * @pre	e != null

	 * @pre e.getChildNodes() != null

	 * @pre e.getChildNodes().getLength() > 1

	 * @pre container != null

	 * */

	private boolean processWidgetElement(Element element, JComponent container) {

		Class cl;

		Constructor ct;

		try {

			cl = Class.forName(element.getNodeName());

			//ct = cl.getConstructor(parameterTypes)

			//TODO 

		} catch (ClassNotFoundException e) {

			// TODO: handle exception

		}

		if (element == null || container == null) 

			return false;

		else if (element.getChildNodes() == null) 

			return false;

		else if (element.getChildNodes().getLength() < 1)

			return false;

		else {

			return true;

		}

	}

	private GridLayout MakeGroup(Element element){

		GridLayout gridLayout = new GridLayout();

		String rows = element.getAttribute("rows");

		String columns = element.getAttribute("columns");

		return gridLayout;

}

}