gui.java

基于Java技术实现的minipacs系统,可以进行诊断信息登记, 嵌入控件查看DICOM 影像和统计分析等功能.

/*
 * Gui.java
 *
 * Created on 24. oktober 2005, 16:12
 *
 * To change this template, choose Tools | Options and locate the template under
 * the Source Creation and Management node. Right-click the template and choose
 * Open. You can then make changes to the template in the Source Editor.
 */

package backup.client;

import backup.server.Server;
import backup.client.Gui;
import backup.model.*;
import java.text.*;
import java.net.*;
import java.util.*;
import java.rmi.*;
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
import springutilities.*;
import burningtools.Device;
import burningtools.CDRecordListener;
import burningtools.Medium;
import burningtools.CdRecordController;

/**
 *
 * @author Kim Stenbo Nielsen
 */
public class Gui extends JFrame implements WindowListener  {
    private Server server;
    private FileClerc user;
    public static final String SERVICE_NAME = "backup client";
    private File ISORoot = new File("c:/temp");
    private Vector<BackupIso> isoFiles= new Vector<BackupIso>();
    private BackupIso isoToBackup;
    
/*    private FileListPane fileListPane;
    private ConfirmPane confirmPane;
    private MethodPane methodPane;
    private ProgressPane progressPane;*/
    
    public Gui(Server s) {
        setTitle("miniWebPACS Backup");
        this.server = s;
        
        // check to see if CDRTools is present. If not transfer file (CDRTools and the driver).

        
        // center wimdow
        Toolkit kit = Toolkit.getDefaultToolkit();
        Dimension screenSize = kit.getScreenSize();
        int screenWidth = (int) screenSize.getWidth();     // getting Screen width
        int screenHeight = (int) screenSize.getHeight();  // getting Screen height
        this.setLocation(((screenWidth / 2) - (this.getWidth()/2)), ((screenHeight / 2) - (this.getHeight()/2)));
        addWindowListener(this);
        setVisible(true);
        
        // navigate to login pane
        navigate(new LoginPane());
    }

    public void navigate(JComponent component) {
        if (component != null) {
            component.setOpaque(true);
            remove(getContentPane());
            setContentPane(component);
            pack();
        }
        else {
            System.out.print("Error navigating - invalid component. Exiting program!");
        }
    }
    
    public void windowActivated(WindowEvent e) {
        
    }

    public void windowClosed(WindowEvent event) {
        System.out.print("Window close event!");
        
    }

    public void windowClosing(WindowEvent event) {
        Object[] options = {"Yes",
                    "No"};
        int option = JOptionPane.showOptionDialog(this,
            "Are you sure you wish to exit minWebPACS Backup?",
            "Exit miniWebPACS Backup?",
            JOptionPane.YES_NO_OPTION,
            JOptionPane.WARNING_MESSAGE,
            null,
            options,
            options[1]);
        if (option == 0) {
            try {
                System.out.println("System exit (window close)");
                System.exit(0);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

    public void windowDeactivated(WindowEvent e) {
        
    }

    public void windowDeiconified(WindowEvent e) {
        
    }
    
    public void windowIconified(WindowEvent e) {
        
    }

    public void windowOpened(WindowEvent e) {
        
    }

    private void showDialog(String message, String title, int type) {
        JOptionPane.showMessageDialog(this, message, title, JOptionPane.ERROR_MESSAGE);
    }
    
    private int showYesCancelMessage(String message, String titel) {
        Object[] options = {"Yes", "Cancel"};
        return JOptionPane.showOptionDialog(this,
                message,
                titel,
                JOptionPane.YES_NO_OPTION,
                JOptionPane.ERROR_MESSAGE,
                null,
                options,
                options[0]);
    }
     
    public int promptUserToInsertMedium(Device device) {
        Medium medium;
        int option = 0;
        boolean stop = false;
        boolean isCD = false;
        
        System.out.println("Checking for inserted medium");
        while (stop == false) {
            if ((medium = CdRecordController.getCdRecord().getMedium(device)) == null) {
                option = showYesCancelMessage("Please insert an empty medium in the selected drive", "No medium in drive");
            }
            else if (!medium.isCD()) {
                option = showYesCancelMessage("The inserted medium is not empty!\nPlease insert an empty medium in the selected drive", "Medium not empty");
            }
            else {
                stop = true;
            }
        }
        return option;
    }


    public final class LoginPane extends TemplatePane implements KeyListener {
    
        private JPanel userInfoPane;
        private JTextField username;
        private JPasswordField password;

        /**
         * Creates a new instance of LoginPane 
         */
        public LoginPane() {
            System.out.print(" - Request access: ");
            border.setTitle("Login");
            
            //create subpanel for entering information
            userInfoPane = new JPanel(new SpringLayout());
            
            username = new JTextField(15);
            password = new JPasswordField(15);

            userInfoPane.add(new JLabel("Username:"));
            userInfoPane.add(username);
            userInfoPane.add(new JLabel("Password:"));
            userInfoPane.add(password);

            SpringUtilities.makeCompactGrid(userInfoPane,
                                            2, 2, //rows, cols
                                            5, 5,        //initX, initY
                                            5, 5);       //xPad, yPad

            centerPane.add(userInfoPane);
            
            leftButton.setText("Cancel");
            middleButton.setVisible(false);
            rightButton.setText("OK");
        }

        public void actionPerformed(ActionEvent event) {
            String username = this.username.getText();
            String password = String.valueOf(this.password.getPassword());
            String action = event.getActionCommand();
            try {
                if (action.equals("OK")) {
                    if (username.equals("") || password.equals("")) {
                        showDialog("Please supply both a username and a password!", "Inane error", JOptionPane.ERROR_MESSAGE);
                    }
                    else if (server.login(user = new FileClerc(username, password)) == false) {
                        JOptionPane.showMessageDialog(this, "The supplied username or password was incorrect!", "Inane error", JOptionPane.ERROR_MESSAGE);
                        System.out.println("Access denied!");
                        System.out.print("Request access: ");
                    }
                    else {
                        System.out.println("Access granted!");
                        System.out.println("Backup Client ready...\n");
                        navigate(new FileListPane());
                    }
                }
                else if (action.equals("Cancel")) {
                    System.exit(0);
                }
            } catch (RemoteException e) {
                e.printStackTrace();
            }
        }

        public void keyPressed(KeyEvent event) {

        }

        public void keyReleased(KeyEvent event) {

        }

        public void keyTyped(KeyEvent event) {

        }
    }
    
    private class FileListPane extends TemplatePane {
        BackupIsoTableModel tableModel;
        JTable table;
        final java.util.Timer timer = new java.util.Timer();
                
        public FileListPane() {
            //TODO: Add pane that gives information about the server status (number of files etc.)
            try {
                tableModel = new BackupIsoTableModel();
                table = new JTable(tableModel);
                table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

                timer.schedule( // schedule new timerTask that polls the server for updates to the iso files.
                    new TimerTask() {
                        public void run()  {
                            int i = 0;
                            try {
                                Vector<BackupIso> newList = server.getFileList();

                                if (!isoFiles.equals(newList)) {
                                    isoFiles = newList;
                                    tableModel.fireTableDataChanged();
                                    //System.out.println("FilePoll: All data changed in model");
                                }
                                else {
                                    //System.out.println("New list length: " + newList.size());
                                    for (Object o : newList.toArray()) {
                                        BackupIso oldIso = isoFiles.get(i);
                                        BackupIso newIso = (BackupIso) o;
                                        if (newIso.getCreatedTime() == null) {
                                            if ((!(newIso.length() == oldIso.length()))) { // Update table row if iso length or creation date, has been modified
                                                //System.out.println("FilePoll: Single file data changed");
                                                tableModel.setValueAt(newIso, i);
                                            }
                                        }
                                        else if (oldIso.getCreatedTime() == null) {
                                                tableModel.setValueAt(newIso, i);
                                        }
                                        i++;
                                    }
                                }
                            } catch (RemoteException e) {
                                e.printStackTrace();
                            }
                        }
                    }
                , 0, 500); // end of schedule method (timer)
                
                centerPane.add(new JScrollPane(table));
                leftButton.setVisible(false);
                middleButton.setText("Cancel");
                rightButton.setText("OK");
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        
        public void actionPerformed(ActionEvent event) {
            Object source = event.getSource();
            if (source == rightButton) {
                // 'OK' button pressed
                // TODO: investigate if the selection is valid (if the file can be downloaded)
                int row;
                if ((row = table.getSelectedRow()) != -1) {
                    isoToBackup = tableModel.getValueAt(row);
                    if (isoToBackup.getCreatedTime() != null) { //if the file has a timestamp it has been created!
                        timer.cancel();
                        navigate(new ConfirmPane());
                    }
                    else {
                        JOptionPane.showMessageDialog(this, "The file has not been created yet!", "Inane error", JOptionPane.ERROR_MESSAGE);
                    }
                }   
                else {
                    JOptionPane.showMessageDialog(this, "Please select a file from the list!", "Inane error", JOptionPane.ERROR_MESSAGE);
                }
            }
            else if (source == middleButton) {
                // 'Cancel' button pressed
                //TODO: change to call gui method 'exit()'
                navigate(new LoginPane());
            }    
        }

        private class BackupIsoTableModel extends AbstractTableModel {
            private String[] columnNames = {"File Name", "Size", "Created", "Status"};
            BackupIso iso;

            public BackupIsoTableModel() {

            }
            
            public int getColumnCount() {
                return columnNames.length;
            }

            public int getRowCount() {
                return isoFiles.size();
            }

            public String getColumnName(int col) {
                return columnNames[col];
            }
            
            public BackupIso getValueAt(int row) {
                return isoFiles.get(row);
            }
            
            public Object getValueAt(int row, int col) {
                BackupIso iso = isoFiles.get(row);

                switch (col) {
                    case 0: {
                        return iso.getName();
                    }
                    case 1: {
                        DecimalFormat numberInMB = new DecimalFormat("###.## MB");
                        DecimalFormat numberInGB = new DecimalFormat("###.# GB");

                        if (iso.length() < 1000000000) {
                            return numberInMB.format(((double) iso.getTotalStudySize())/1000000);
                        }
                        else {
                            return numberInGB.format(((double) iso.getTotalStudySize())/1000000000);
                        }
                    }
                    case 2: {
                        Date isoDate = iso.getISOCreationDate();
                        if (isoDate != null) {