friendsfuncpanel.java

图书馆座位管理系统

package librarysearchingsystem;

import javax.swing.JDialog;
import javax.swing.JPanel;
import java.awt.*;
import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.JButton;
import javax.swing.*;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import fileUtility.StudentsManagement;

public class FriendsFuncPanel extends JPanel implements ActionListener {
//    Frame f;

    FriendsPanel fP;
    public FriendsFuncPanel() {

        try {
            jbInit();
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }


    private void jbInit() throws Exception {
        this.setPreferredSize(new Dimension(200, 200));
        this.setLayout(null);
        jLabel1.setFont(new java.awt.Font("Dialog", Font.PLAIN, 14));
        jLabel1.setForeground(SystemColor.windowBorder);
        jLabel1.setHorizontalAlignment(SwingConstants.CENTER);
        jLabel1.setText("ID:");
        jLabel1.setBounds(new Rectangle(8, 15, 50, 30));
        IDTextField.setText("");
        IDTextField.setBounds(new Rectangle(67, 15, 117, 30));
        addFriendButton.setBounds(new Rectangle(10, 58, 80, 34));
        addFriendButton.setText("添加好友");
        removeFiendButton.setBounds(new Rectangle(104, 58, 80, 34));
        removeFiendButton.setText("删除好友");
        showFriendsNotInLibButton.setBounds(new Rectangle(10, 95, 174, 28));
        showFriendsNotInLibButton.setText("显示/隐藏不在图书馆的好友");
        this.add(jLabel1);
        this.add(IDTextField);
        this.add(removeFiendButton);
        this.add(addFriendButton);
        this.add(showFriendsNotInLibButton);

        addFriendButton.addActionListener(this);
        removeFiendButton.addActionListener(this);
        showFriendsNotInLibButton.addActionListener(this);
//        this.setSize(200, 100);
        this.setBackground(new Color(145, 111, 216));
    }

    JLabel jLabel1 = new JLabel();
    JTextField IDTextField = new JTextField();
    JButton addFriendButton = new JButton();
    JButton removeFiendButton = new JButton();
    JButton showFriendsNotInLibButton = new JButton();
    public void actionPerformed(ActionEvent e) {
        if (e.getSource() == showFriendsNotInLibButton) {
            fP.isInLib = !fP.isInLib;
            fP.f.refreshFriends();
            return;
        }

        int serial = changeIDtoSerial();
        if (serial < 0) {
            return;
        } else {
            if (e.getSource() == addFriendButton) {

                if (serial == fP.f.stu.serial) {
                    new TipsDialog("您不能添加自己为好友");
                    return;
                }

                if (fP.isFriend(serial)) {
                    new TipsDialog(StudentsManagement.students[serial].name +
                                   "已经是您的好友");
                    return;
                }
                StudentsManagement.addFriend(fP.f.stu.ID, serial,
                                             fP.friendsSerial);
                fP.f.refreshFriends();
                new TipsDialog("您已将" + StudentsManagement.students[serial].name +
                               "加为好友");

            } else if (e.getSource() == removeFiendButton) {
                if (!fP.isFriend(serial)) {
                    new TipsDialog(StudentsManagement.students[serial].name +
                                   "不是您的好友", true);
                    return;

                }
                StudentsManagement.removeFriend(fP.f.stu.ID, serial);
                fP.f.refreshFriends();
                new TipsDialog("您已将" + StudentsManagement.students[serial].name +
                               "从好友中删除", true);

            }
        }
    }

    private int changeIDtoSerial() {
        int i = 0;
        int ID = 0;
        try {
            ID = Integer.parseInt(IDTextField.getText());
        } catch (NumberFormatException ex) {
            new TipsDialog("您输入的学号有误");
            return -1;
        }
        for (; i < StudentsManagement.students.length; i++) {
            if (StudentsManagement.students[i].ID == ID) {
                return i;
            }
        }
        new TipsDialog("您输入的学号有误");
        return -1;
    }

}