tablehandler.java

本人写的一个简单VCD租赁系统

//************************************************
//TableHandler.java
//This class provides table models for displaying
//data in the tables.
//Created by Xiaobin Lin               2/Dec/2004
//************************************************

package Main;

import javax.swing.table.*;
import java.util.*;
   
class TableHandler extends AbstractTableModel
{
	//overloaded constructor one
	//which is used for displaying data of MemberSet type
    public TableHandler(final MemberSet memberSet){
        dataRows = memberSet.getTabulatedData(); // assign values to the vector
        columnNames = memberSet.getTabHeader();
    }
    
    //overloaded constructor two
	//which is used for displaying data of VideoSet type
    public TableHandler(final VideoSet videoSet){
        dataRows = videoSet.getTabulatedData(); // assign values to the vector
        columnNames = videoSet.getTabHeader(); 
    }
    
    public void updateTable(final VideoSet videoSet){
    	dataRows.clear();
    	dataRows = videoSet.getTabulatedData(); // assign values to the vector
        columnNames = videoSet.getTabHeader();
    }    	
    
    public int getColumnCount()
    {
        return columnNames.length;
    }
    
    public int getRowCount()
    {
        if(dataRows != null)
        {
            return dataRows.size();
        }
        else
        {
            return -1;
        }
    }
    
    public String getColumnName(int col) {
            return columnNames[col];
    }
   
    public Object getValueAt(int row, int column)
    {
        if(dataRows != null)
        {
            return ((Object[])(dataRows.elementAt(row)))[column];
        }
        else
        {
            return null;
        }
    }
    
    public boolean isCellEditable(int row, int col) {
    	return false; //non-editable;
    }
       
    private Vector dataRows;   // Vector to contain the rows of data
    private String[] columnNames;
}