booktablemodellistener.java

使用swing做的熟悉控件使用的DEMO

package frame;
import javax.swing.table.*;
import javax.swing.event.*;
import book.*;
import userexception.*;

public class BookTableModelListener implements TableModelListener{
	private BookTableModel tm = null;
	private BookList bl = null;
	private LendList ll = null;

	//constructor
	public BookTableModelListener(BookTableModel tm, BookList bl, LendList ll) {
		this.tm = tm;
		this.bl = bl;
		this.ll = ll;
	}

	//actions
	public void tableChanged(TableModelEvent e) {
		if(e.getType() == TableModelEvent.UPDATE) {
			int row = e.getFirstRow();
			int col = e.getColumn();
			//get the key position : in which column
			int keyPos = col;
			String[] names = tm.getColNames();
			for(int i = 0; i < names.length; i++)
			{
				if(names[i].equals(Book.KEY)) {
					keyPos = i;
					break;
				}
			}
  System.out.println("KEY POS:" + keyPos);
	
			if(! (keyPos == col)) {
				//do update
				Book bk = new Book(0,"","",0,0,"");
				String key = (String)tm.getValueAt(row,keyPos);
				System.out.println("KEY:" + key);
				String ChangeValue = tm.getValueAt(row,col).toString();
				System.out.println(ChangeValue);
				/*
				//tm.setValueAt(ChangeValue,row,col);
				for(int i = 0; i< names.length; i++) {
					if(names[i].equals(Book.KEY)) bk.setBookId(Integer.parseInt((String)tm.getValueAt(row,i))); 
					else if(names[i].equals(Book.AUTHOR)) bk.setAuthor((String)tm.getValueAt(row,i));
					else if(names[i].equals(Book.NAME)) bk.setName((String)tm.getValueAt(row,i));
					else if(names[i].equals(Book.TYPE)) bk.setBookType(Integer.parseInt((String)tm.getValueAt(row,i)));
					else if(names[i].equals(Book.COST)) bk.setCost(Double.parseDouble((String)tm.getValueAt(row,i)));
					else if(names[i].equals(Book.PUBLISH)) bk.setFrom((String)tm.getValueAt(row,i));
				}
				try {	
					bl.modifyBook(bk);
				} catch(BookNotFoundException evt) {
					System.out.println(evt.getMessage());
				}
				*/
			}		
			
		} else
		if(e.getType() == TableModelEvent.INSERT) {

		} else
		if(e.getType() == TableModelEvent.DELETE) {

		}
		
	}
	
}