/*

	Derived from JTree1

	1)  removed the popupmenu stuff

	2)	Get rid of the default content (sports, colors...)

		> Is there a way to create a JTree with a null root node and no elements
		> without Swing adding the colors, sports and food nodes automatically ?

			Provide your own empty model, and check JTree's API documentation
			for hiding the root node

	3)  Removed unused methods :
			- addObject(Object), addObject(DefaultMutableTreeNode,Object)
			- showSelected()
*/

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

public class JTree0 extends JTree
{
	DefaultMutableTreeNode 	root;

	DefaultTreeModel				treeModel;

	public JTree0( DefaultMutableTreeNode root )
	{
		super( root );
		this.root = root;	//  Really useful ?

		treeModel = new DefaultTreeModel(root);
		this.setModel( treeModel );

		addMouseListener(
			new MouseAdapter()
			{
				public void mousePressed(MouseEvent e)
				{
					int r = getRowForLocation(e.getX(),e.getY());
					System.err.println("mousePressed() b=" + e.getButton() + " r=" + r );
				}
			}
		);
	}

  public DefaultMutableTreeNode addObject(DefaultMutableTreeNode parent,
                                          Object child,
                                          boolean shouldBeVisible)
  {
    DefaultMutableTreeNode childNode = new DefaultMutableTreeNode(child);

    if (parent == null) { parent = root; }

		// Invoke this on the TreeModel, and NOT DefaultMutableTreeNode
    treeModel.insertNodeInto( childNode, parent, parent.getChildCount() );

    if (shouldBeVisible) {
      scrollPathToVisible(new TreePath(childNode.getPath()));
    }
    return childNode;
  }

	void populateTree()
	{

	  String p1Name = new String("Parent 1");
	  String p2Name = new String("Parent 2");
	  String c1Name = new String("Child 1");
	  String c2Name = new String("Child 2");

	  DefaultMutableTreeNode p1, p2;

	  p1 = addObject(null, p1Name, true );	//	added 3rd argt 'true' to make visible
	  p2 = addObject(null, p2Name, true );

	  addObject(p1, c1Name, true );
	  addObject(p1, c2Name, true );

		/*
	  addObject(p2, c1Name, true );
	  addObject(p2, c2Name, true );
	  */
	}


	public static void main( String a[] )
	{
    JFrame f = new JFrame("JTree0");
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		f.setSize(400,400);

		DefaultMutableTreeNode r = new DefaultMutableTreeNode("TreeT");

		JTree0 							 t = new JTree0( r );

		t.populateTree();

		f.getContentPane().add(t);

    f.setVisible(true);
	}
}