import java.awt.*;
import javax.swing.*;
import javax.swing.tree.*;
import java.awt.event.*;
import java.io.*;

import org.jdom.input.*;
import org.jdom.output.*;
import org.jdom.*;

public class TreePanel extends JFrame
{
    JMenuBar jMenuBar1 = new JMenuBar();
    JMenu fileMenu = new JMenu();
    JMenuItem openItem = new JMenuItem();
    JMenuItem saveItem = new JMenuItem();
    JMenu editMenu = new JMenu();
    JMenuItem insertItem = new JMenuItem();
    JMenuItem deleteItem = new JMenuItem();
    JMenuItem exitItem = new JMenuItem();
    JTree tree = new JTree();
	TrdDOMTreeModel model = null;
    JFileChooser fileChooser = new JFileChooser();

	public TreePanel()
	{
        try {
            jbInit();
        }
        catch(Exception e) {
            e.printStackTrace();
        }
	}
    private void jbInit() throws Exception {
        openItem.setText("Open");
        openItem.setMnemonic('O');
        openItem.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(ActionEvent e) {
                openItem_actionPerformed(e);
            }
        });
        fileMenu.setMnemonic('F');
        fileMenu.setText("File");
        saveItem.setMnemonic('S');
        saveItem.setText("Save");
        saveItem.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(ActionEvent e) {
                saveItem_actionPerformed(e);
            }
        });
        editMenu.setMnemonic('E');
        editMenu.setText("Edit");
        insertItem.setMnemonic('I');
        insertItem.setText("Insert");
        insertItem.addActionListener(new java.awt.event.ActionListener() {
			public void actionPerformed(ActionEvent e) {
				insertItem_actionPerformed(e);
			}
		});
        deleteItem.setMnemonic('D');
        deleteItem.setText("Delete");
        deleteItem.addActionListener(new java.awt.event.ActionListener() {
			public void actionPerformed(ActionEvent e) {
				deleteItem_actionPerformed(e);
			}
		});
        exitItem.setMnemonic('X');
        exitItem.setText("Exit");
        exitItem.setAccelerator(javax.swing.KeyStroke.getKeyStroke(115, java.awt.event.KeyEvent.ALT_MASK, false));
        exitItem.addActionListener(new java.awt.event.ActionListener() {
			public void actionPerformed(ActionEvent evt) {
				System.exit(0);
			}
		});
        this.setDefaultCloseOperation(3);
        this.setJMenuBar(jMenuBar1);
        this.setTitle("Test Frame");
        tree.setModel(null);
		tree.setCellRenderer(new TrdTreeCellRenderer());
        fileChooser.setToolTipText("");
        jMenuBar1.add(fileMenu);
        jMenuBar1.add(editMenu);
        fileMenu.add(openItem);
        fileMenu.add(saveItem);
        fileMenu.addSeparator();
        fileMenu.add(exitItem);
        editMenu.add(insertItem);
        editMenu.add(deleteItem);
        this.getContentPane().add(fileChooser, BorderLayout.CENTER);
        this.getContentPane().add(tree, BorderLayout.CENTER);
    }

	/**
	 *
	 */
	static public void main(String[] args) {
		TreePanel panel = new TreePanel();
		panel.setSize(300, 300);
		panel.setVisible(true);
	}

	void deleteItem_actionPerformed(ActionEvent e)
	{
		TreePath path = tree.getLeadSelectionPath();
		if(path == null)
			return;
		Object obj = path.getLastPathComponent();
		if(obj == null)
			return;
		if(obj instanceof Element)
		{
			Element element = (Element)obj;
			model.removeNodeFromParent(element);
		}
	}

	void insertItem_actionPerformed(ActionEvent e)
	{
		TreePath path = tree.getLeadSelectionPath();
		if(path == null)
			return;
		Object obj = path.getLastPathComponent();
		if(obj == null)
			return;
		if(obj instanceof Element)
		{
			InsertDialog dialog = new InsertDialog(this);
			dialog.setVisible(true);
			Element element = dialog.getElement();
			if(element != null)
			{
				this.model.insertNodeInto(element, (Element)obj, 0);
			}
		}
	}

    void openItem_actionPerformed(ActionEvent e) {
		 int opt = fileChooser.showOpenDialog(this);
		 if(opt == JFileChooser.CANCEL_OPTION)
				return;
		File file = fileChooser.getSelectedFile();
		if(file == null)
			return;
		Document doc = getDocument(file);
		if(doc == null)
			return;
		model = new TrdDOMTreeModel(doc);
		this.tree.setModel(model);
    }

	private Document getDocument(final File file)
	{
		try
		{
			SAXBuilder builder = new SAXBuilder();
			return builder.build(new BufferedInputStream(new FileInputStream(file), 4096));
		} catch(Exception ex)
		{
			ex.printStackTrace(System.err);
		}
		return null;
	}

    void saveItem_actionPerformed(ActionEvent e) {
		try
		{
			Document doc = model.getDcoument();
			XMLOutputter outputter = new XMLOutputter();
			outputter.setIndent(true);
			outputter.setTrimText(true);
			outputter.output(doc, new BufferedOutputStream(new FileOutputStream("new.vxml"), 4096));
		} catch(Exception ex)
		{
			ex.printStackTrace(System.err);
		}
    }
}