returndialog.java

来自「本人写的一个简单VCD租赁系统」· Java 代码 · 共 235 行

//************************************************
//ReturnDialog.java
//This class is used to create an GUI dialog for
//returning videos to the stock.
//Created by Xiaobin Lin               3/Dec/2004
//************************************************

package Main;

import javax.swing.*;
import javax.swing.WindowConstants.*;
import javax.swing.event.*;
import java.awt.*;
import java.awt.event.*;

public class ReturnDialog extends JDialog {
    
    //Constructor: automatically invoked when a new instance of ReturnDialog is created
    public ReturnDialog(Frame parent, boolean modal, MemberSet mSet, VideoSet vSet, LendingSet lSet) {
        super(parent, modal);
        memberSet = mSet;
        videoSet = vSet;
        lendingSet = lSet;
        tableHandlerMember = new TableHandler(memberSet);
        rowSelected = -1;
        initComponents();
    }
    
    // This method is called from within the constructor to
    // initialize the dialog
    private void initComponents() {
        labelTableName = new JLabel();
        scrollPaneMember = new JScrollPane();
        tableMember = new JTable();
        panelMessage = new JPanel();
        textAreaStep = new JTextArea();
        labelSteps = new JLabel();
        labelHints = new JLabel();
        textAreaHints = new JTextArea();
        labelVideoHeld = new JLabel();
        scrollPaneVideo = new JScrollPane();
        tableVideoHeld = new JTable();
        buttonReturn = new JButton();
        buttonCancel = new JButton();

        getContentPane().setLayout(null);

        setDefaultCloseOperation(DISPOSE_ON_CLOSE);
        setTitle("Return a Video");
        setModal(true);
        setName("dialogReturn");
        setResizable(false);
        labelTableName.setFont(new Font("Times New Roman", 1, 14));
        labelTableName.setText("Member Table");
        getContentPane().add(labelTableName);
        labelTableName.setBounds(180, 10, 130, 20);

        scrollPaneMember.setFont(new Font("Times New Roman", 0, 12));
        tableMember.setFont(new Font("Times New Roman", 0, 12));
        tableMember.setModel(tableHandlerMember);
        tableMember.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
        ListSelectionModel rowSM = tableMember.getSelectionModel();
        rowSM.addListSelectionListener(new ListSelectionListener() {
            public void valueChanged(ListSelectionEvent e) {
                //Ignore extra messages.
                if (e.getValueIsAdjusting()) return;

                ListSelectionModel lsm = (ListSelectionModel)e.getSource();
                if (lsm.isSelectionEmpty()) {
                    buttonReturn.setEnabled(false);
                } else {
                    rowSelected = lsm.getMinSelectionIndex();
                    memberNo = memberSet.getMemberNo(rowSelected);
                    //whether the member currently holds a video
                    int hasVideo = lendingSet.findMember(memberNo);
                    if (hasVideo == -1){ //the member currently holds no video
                        textAreaHints.setText("The member currently holds\n no video.");
                        for(int i=0; i<5; i++){
                            tableVideoHeld.setValueAt("",0,i);
                        }
                        buttonReturn.setEnabled(false);
                    }else{
                        lendingIndex = hasVideo;
                        textAreaHints.setText("");
                        int videoIndex = lendingSet.getVideoIndex(hasVideo);
                        tableVideoHeld.setValueAt(videoSet.getClassNo(videoIndex), 0, 0);
                        tableVideoHeld.setValueAt(videoSet.getVideoTitle(videoIndex), 0, 1);
                        tableVideoHeld.setValueAt(videoSet.getVideoDirector(videoIndex), 0, 2);
                        tableVideoHeld.setValueAt(videoSet.getVideoLangClass(videoIndex), 0, 3);
                        tableVideoHeld.setValueAt(videoSet.getVideoSpecificLang(videoIndex), 0, 4);
                        buttonReturn.setEnabled(true);
                    }
                }
            }
        });
        scrollPaneMember.setViewportView(tableMember);

        getContentPane().add(scrollPaneMember);
        scrollPaneMember.setBounds(180, 40, 380, 190);

        panelMessage.setLayout(null);

        panelMessage.setFont(new Font("Times New Roman", 0, 12));
        textAreaStep.setEditable(false);
        textAreaStep.setFont(new Font("Times New Roman", 1, 12));
        textAreaStep.setText("Select the member who wants to\nreturn a video, then click\n\"Return\" button at the right\nbuttom.");
        textAreaStep.setFocusable(false);
        textAreaStep.setOpaque(false);
        panelMessage.add(textAreaStep);
        textAreaStep.setBounds(10, 40, 160, 60);

        labelSteps.setFont(new Font("Times New Roman", 1, 14));
        labelSteps.setText("Steps");
        panelMessage.add(labelSteps);
        labelSteps.setBounds(10, 10, 60, 20);

        labelHints.setFont(new Font("Times New Roman", 1, 14));
        labelHints.setText("Hints");
        panelMessage.add(labelHints);
        labelHints.setBounds(10, 230, 40, 20);

        textAreaHints.setEditable(false);
        textAreaHints.setFont(new Font("Times New Roman", 1, 12));
        textAreaHints.setFocusable(false);
        textAreaHints.setOpaque(false);
        panelMessage.add(textAreaHints);
        textAreaHints.setBounds(10, 260, 160, 60);

        getContentPane().add(panelMessage);
        panelMessage.setBounds(0, 0, 180, 330);

        labelVideoHeld.setFont(new Font("Times New Roman", 1, 14));
        labelVideoHeld.setText("Video Held by Current Member");
        getContentPane().add(labelVideoHeld);
        labelVideoHeld.setBounds(180, 230, 200, 30);

        scrollPaneVideo.setFont(new Font("Times New Roman", 0, 12));
        tableVideoHeld.setFont(new Font("Times New Roman", 0, 12));
        tableVideoHeld.setModel(new javax.swing.table.DefaultTableModel(
            new Object [][] {
                {null, null, null, null, null}
            },
            new String [] {
                "Class#", "Title", "Director", "Lang Class", "Specific Language"
            }
        ) {
            Class[] types = new Class [] {
                java.lang.String.class, java.lang.String.class, java.lang.String.class, java.lang.String.class, java.lang.String.class
            };
            boolean[] canEdit = new boolean [] {
                false, false, false, false, false
            };

            public Class getColumnClass(int columnIndex) {
                return types [columnIndex];
            }

            public boolean isCellEditable(int rowIndex, int columnIndex) {
                return canEdit [columnIndex];
            }
        });
        tableVideoHeld.setEnabled(false);
        scrollPaneVideo.setViewportView(tableVideoHeld);

        getContentPane().add(scrollPaneVideo);
        scrollPaneVideo.setBounds(180, 260, 380, 70);

        buttonReturn.setFont(new Font("Times New Roman", 0, 12));
        buttonReturn.setText("Return");
        buttonReturn.setEnabled(false);
        buttonReturn.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent evt) {
                buttonReturnActionPerformed(evt);
            }
        });

        getContentPane().add(buttonReturn);
        buttonReturn.setBounds(380, 350, 80, 23);

        buttonCancel.setFont(new Font("Times New Roman", 0, 12));
        buttonCancel.setText("Cancel");
        buttonCancel.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent evt) {
                buttonCancelActionPerformed(evt);
            }
        });

        getContentPane().add(buttonCancel);
        buttonCancel.setBounds(470, 350, 80, 23);

        Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
        setBounds((screenSize.width-570)/2, (screenSize.height-420)/2, 570, 420);
    }//the end of initComponents

	//when "return" button is pressed
    private void buttonReturnActionPerformed(ActionEvent evt) {
        lendingSet.removeLending(lendingIndex);
        exitDialog();
    }
    
    //when "cancel" button is pressed
    private void buttonCancelActionPerformed(ActionEvent evt) {
        exitDialog();
    }
    
    //exit dialog    
    private void exitDialog(){
        setVisible(false);
        dispose();        
    }
    
    // Variables declaration - GUI-related
    private JButton buttonCancel;
    private JButton buttonReturn;
    private JLabel labelHints;
    private JLabel labelSteps;
    private JLabel labelTableName;
    private JLabel labelVideoHeld;
    private JPanel panelMessage;
    private JScrollPane scrollPaneMember;
    private JScrollPane scrollPaneVideo;
    private JTable tableMember;
    private JTable tableVideoHeld;
    private JTextArea textAreaHints;
    private JTextArea textAreaStep;
    // Variables declaration - non-GUI-related
    private MemberSet memberSet;
    private VideoSet videoSet;
    private LendingSet lendingSet;
    private TableHandler tableHandlerMember;
    private int rowSelected;
    private int lendingIndex;
    private int memberNo;
}