/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package com.bestray.healthcarecommonutil.util;

import java.awt.*;
import java.awt.event.*;
import java.beans.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;

// TODO: Auto-generated Javadoc
/*
 *	Use a JTable as a renderer for row numbers of a given main table.
 *  This table must be added to the row header of the scrollpane that
 *  contains the main table.
 */
/**
 * The Class RowNumberTable.
 */
public class RowNumberTable extends JTable
	implements ChangeListener, PropertyChangeListener
{
	
	/** The main. */
	private JTable main;

	/**
	 * Instantiates a new row number table.
	 *
	 * @param table the table
	 */
	public RowNumberTable(JTable table)
	{
		main = table;
		main.addPropertyChangeListener( this );

		setFocusable( false );
		setAutoCreateColumnsFromModel( false );
		setModel( main.getModel() );
		setSelectionModel( main.getSelectionModel() );

		TableColumn column = new TableColumn();
		column.setHeaderValue(" # ");
		addColumn( column );
		column.setCellRenderer(new RowNumberRenderer());

		getColumnModel().getColumn(0).setPreferredWidth(30);
		setPreferredScrollableViewportSize(getPreferredSize());
	}

	/* (non-Javadoc)
	 * @see javax.swing.JTable#addNotify()
	 */
	@Override
	public void addNotify()
	{
		super.addNotify();

		Component c = getParent();

		//  Keep scrolling of the row table in sync with the main table.

		if (c instanceof JViewport)
		{
			JViewport viewport = (JViewport)c;
			viewport.addChangeListener( this );
		}
	}

	/*
	 *  Delegate method to main table
	 */
	/* (non-Javadoc)
	 * @see javax.swing.JTable#getRowCount()
	 */
	@Override
	public int getRowCount()
	{
		return main.getRowCount();
	}

	/* (non-Javadoc)
	 * @see javax.swing.JTable#getRowHeight(int)
	 */
	@Override
	public int getRowHeight(int row)
	{
		return main.getRowHeight(row);
	}

	/*
	 *  This table does not use any data from the main TableModel,
	 *  so just return a value based on the row parameter.
	 */
	/* (non-Javadoc)
	 * @see javax.swing.JTable#getValueAt(int, int)
	 */
	@Override
	public Object getValueAt(int row, int column)
	{
		return Integer.toString(row + 1);
	}

	/*
	 *  Don't edit data in the main TableModel by mistake
	 */
	/* (non-Javadoc)
	 * @see javax.swing.JTable#isCellEditable(int, int)
	 */
	@Override
	public boolean isCellEditable(int row, int column)
	{
		return false;
	}
//
//  Implement the ChangeListener
//
	/* (non-Javadoc)
 * @see javax.swing.event.ChangeListener#stateChanged(javax.swing.event.ChangeEvent)
 */
public void stateChanged(ChangeEvent e)
	{
		//  Keep the scrolling of the row table in sync with main table

		JViewport viewport = (JViewport) e.getSource();
		JScrollPane scrollPane = (JScrollPane)viewport.getParent();
		scrollPane.getVerticalScrollBar().setValue(viewport.getViewPosition().y);
	}
//
//  Implement the PropertyChangeListener
//
	/* (non-Javadoc)
 * @see java.beans.PropertyChangeListener#propertyChange(java.beans.PropertyChangeEvent)
 */
public void propertyChange(PropertyChangeEvent e)
	{
		//  Keep the row table in sync with the main table

		if ("selectionModel".equals(e.getPropertyName()))
		{
			setSelectionModel( main.getSelectionModel() );
		}

		if ("model".equals(e.getPropertyName()))
		{
			setModel( main.getModel() );
		}
	}

	/*
	 *  Borrow the renderer from JDK1.4.2 table header
	 */
	/**
	 * The Class RowNumberRenderer.
	 */
	private static class RowNumberRenderer extends DefaultTableCellRenderer
	{
		
		/**
		 * Instantiates a new row number renderer.
		 */
		public RowNumberRenderer()
		{
			setHorizontalAlignment(JLabel.CENTER);
		}

		/* (non-Javadoc)
		 * @see javax.swing.table.DefaultTableCellRenderer#getTableCellRendererComponent(javax.swing.JTable, java.lang.Object, boolean, boolean, int, int)
		 */
		public Component getTableCellRendererComponent(
			JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column)
		{
			if (table != null)
			{
				JTableHeader header = table.getTableHeader();
                                header.setFont(new Font("SansSerif", Font.BOLD, 11));
				if (header != null)
				{
					setForeground(header.getForeground());
					setBackground(header.getBackground());
					//setFont(header.getFont());
                                        setFont(new Font("SansSerif", Font.PLAIN, 11));
				}
			}

			if (isSelected)
			{
				setFont( getFont().deriveFont(Font.BOLD) );
                                //setForeground(Color.BLACK);
			}

			setText((value == null) ? "" : value.toString());
			//setBorder(UIManager.getBorder("TableHeader.cellBorder"));

			return this;
		}
	}
}