makepldlg.java

进程调度和存储管理模拟

package cn.edu.cauc.crab.ossimulate;

import java.awt.*;
import javax.swing.*;
import com.borland.jbcl.layout.*;
import java.awt.event.*;

/**
 * <p>Title: OS simulate</p>
 * <p>Description: This is my home work.</p>
 * <p>Copyright: Copyleft (c) 2004</p>
 * <p>Company: CAUC</p>
 * @author Crab
 * @version 0.1
 */

public class makePLDLG extends JDialog {

    PageReplacement pR;
    private JPanel panel1 = new JPanel();
    private XYLayout xYLayout1 = new XYLayout();
    private JTextField pNumTA = new JTextField();
    private JLabel jLabel1 = new JLabel();
    private JButton addBT = new JButton();
    private JButton finishBT = new JButton();
    private JScrollPane jScrollPane1 = new JScrollPane();
    private JTextArea outTA = new JTextArea();

    public makePLDLG(Frame frame, String title, boolean modal) {
        super(frame, title, modal);
        try {
            jbInit();
            pack();
        }
        catch(Exception ex) {
            ex.printStackTrace();
        }
    }

    public makePLDLG(Frame frame, PageReplacement pR) {
        this(null, "建立页面申请列表", false);
        this.pR = pR;
    }
    private void jbInit() throws Exception {
        panel1.setLayout(xYLayout1);
        jLabel1.setText("页面号：");
        addBT.setText("添加");
        addBT.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(ActionEvent e) {
                addBT_actionPerformed(e);
            }
        });
        finishBT.setText("完成");
        finishBT.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(ActionEvent e) {
                finishBT_actionPerformed(e);
            }
        });
        getContentPane().add(panel1);
        panel1.add(jLabel1,   new XYConstraints(35, 50, 48, 21));
        panel1.add(addBT, new XYConstraints(35, 104, 68, 26));
        panel1.add(finishBT,    new XYConstraints(35, 160, 68, 26));
        panel1.add(jScrollPane1, new XYConstraints(175, 25, 195, 262));
        panel1.add(pNumTA,  new XYConstraints(82, 49, 69, -1));
        jScrollPane1.getViewport().add(outTA, null);
    }

    void addBT_actionPerformed(ActionEvent e) {
        try {
            int pn = Integer.parseInt(pNumTA.getText());
            if (pn < 0)
                throw new Exception();
            pR.addPage(pn);
            outTA.append("页面号：" + pn +"\n");
            pNumTA.setText("");
        } catch (Exception ex) {
            pNumTA.setText("");
            JOptionPane.showMessageDialog(this, "页面号必须是大于0的整型数");
        }
    }

    void finishBT_actionPerformed(ActionEvent e) {
        dispose();
    }
}