musicmodel.java

来自「源码为科学出版社出版的英文<java设计模式>(影印版)所用的所有例」· Java 代码 · 共 61 行

import java.awt.*;
import java.awt.event.*;
import java.util.*;

//swing classes
import javax.swing.text.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.border.*;
import javax.swing.table.*;

public class MusicModel extends AbstractTableModel {

    String[] columnNames = {"Composer", "Title", "Orchestral"};

    Object[] [] musicData = {
        {"Tschaikovsky", "1812 Overture", new Boolean(true)},
        {"Stravinsky", "Le Sacre", new Boolean(true)},
        {"Lennon","Eleanor Rigby", new Boolean(false)},
        {"Wagner", "Gotterdammerung", new Boolean(true)}
    };

    private int rowCount, columnCount;                  
    //------------------------------------------
    public MusicModel(int rowCnt, int colCnt) {
        rowCount = 4;
        columnCount = 3;
    }
    //------------------------------------------
    public String getColumnName(int col) {
        return columnNames[col];
    }
    //------------------------------------------
    public int getRowCount() {
        return rowCount;
    }
    //------------------------------------------
    public int getColumnCount() {
        return columnCount;
    }
    //------------------------------------------
    public Class getColumnClass( int col) {
        return getValueAt(0, col).getClass();
    }
    //------------------------------------------
    public boolean isCellEditable(int row, int col) {
        return(col > 1);
    }
    //------------------------------------------
    public void setValueAt(Object obj, int row, int col) {
        musicData[row][col] = obj;
        fireTableCellUpdated(row, col);
    }
    //------------------------------------------
    public Object getValueAt(int row, int col) {
        return musicData[row][col];
    }

}