source: trunk/gli/src/org/greenstone/gatherer/gui/LockFileDialog.java@ 4659

package org.greenstone.gatherer.gui;

import java.awt.*;
import java.awt.event.*;
import java.io.*;
import javax.swing.*;
import org.greenstone.gatherer.Dictionary;
import org.greenstone.gatherer.Gatherer;
import org.greenstone.gatherer.gui.TextFieldLabel;
import org.greenstone.gatherer.msm.MSMUtils;
import org.greenstone.gatherer.util.Utility;
import org.greenstone.gatherer.gui.SimpleMenuBar;
import org.greenstone.gatherer.gui.ModalDialog;
import org.w3c.dom.*;

/** A lock file dialog is shown whenever GLI detects an existing lock on a collection it is trying to open. The user can look at the details provided with the dialog, and decide whether to 'steal' the lock or to cancel the loading. */
public class LockFileDialog
    extends ModalDialog {

    private int choice;
    private Document document;
    private JButton cancel_button;
    private JButton ok_button;
    private LockFileDialog self;

    static final public int NO_OPTION  = 0;
    static final public int YES_OPTION = 1;

    static final private Dimension LABEL_SIZE = new Dimension(100, 25);
    static final private Dimension SIZE = new Dimension(500, 250);
    static final private int ICON_SIZE = 30;

    public LockFileDialog(JFrame parent, String name, File lock_file) {
    super(parent, get("Title"), true);
    setSize(SIZE);
    setJMenuBar(new SimpleMenuBar("2.3"));
    this.self = this;
    // Parse the lock file, but do so quietly so that if the XML is poorly formed it doesn't show exception.
    document = Utility.parse(lock_file, false);
    // Creation
    JPanel content_pane = (JPanel) getContentPane();
    JPanel upper_pane = new JPanel();
    ImageIcon icon = Utility.getImage("lcolicn.gif");
    ImageIcon scaled_icon = new ImageIcon(icon.getImage().getScaledInstance(ICON_SIZE, ICON_SIZE, Image.SCALE_DEFAULT));
    JLabel icon_label = new JLabel(scaled_icon);
    JPanel title_pane = new JPanel();
    JLabel title_one_label = new JLabel(get("General.Warning"));
    JLabel title_two_label = new JLabel(get("Lockfile_Message_One"));
    JPanel central_pane = new JPanel();
    JPanel name_pane = new JPanel();
    JLabel name_label = new JLabel(get("Name"));
    name_label.setPreferredSize(LABEL_SIZE);
    TextFieldLabel name_field = new TextFieldLabel(name);
    JPanel person_pane = new JPanel();
    JLabel person_label = new JLabel(get("User"));
    person_label.setPreferredSize(LABEL_SIZE);
    TextFieldLabel person_field = new TextFieldLabel(getValue("User"));
    JPanel machine_pane = new JPanel();
    JLabel machine_label = new JLabel(get("Machine"));
    machine_label.setPreferredSize(LABEL_SIZE);
    TextFieldLabel machine_field = new TextFieldLabel(getValue("Machine"));
    JPanel created_pane = new JPanel();
    JLabel created_label = new JLabel(get("Date"));
    created_label.setPreferredSize(LABEL_SIZE);
    TextFieldLabel created_field = new TextFieldLabel(getValue("Date"));
    JLabel central_label = new JLabel(get("Lockfile_Message_Two"));
    JPanel button_pane = new JPanel();
    ok_button = new JButton(get("General.OK"));
    cancel_button = new JButton(get("General.Cancel"));
    // Connection
    ok_button.addActionListener(new MyActionListener());
    cancel_button.addActionListener(new MyActionListener());
    // Layout
    icon_label.setBorder(BorderFactory.createEmptyBorder(0,0,0,10));

    title_pane.setLayout(new GridLayout(2,1,0,5));
    title_pane.add(title_one_label);
    title_pane.add(title_two_label);

    upper_pane.setLayout(new BorderLayout());
    upper_pane.add(icon_label, BorderLayout.WEST);
    upper_pane.add(title_pane, BorderLayout.CENTER);

    name_pane.setLayout(new BorderLayout());
    name_pane.add(name_label, BorderLayout.WEST);
    name_pane.add(name_field, BorderLayout.CENTER);

    person_pane.setLayout(new BorderLayout());
    person_pane.add(person_label, BorderLayout.WEST);
    person_pane.add(person_field, BorderLayout.CENTER);

    machine_pane.setLayout(new BorderLayout());
    machine_pane.add(machine_label, BorderLayout.WEST);
    machine_pane.add(machine_field, BorderLayout.CENTER);

    created_pane.setLayout(new BorderLayout());
    created_pane.add(created_label, BorderLayout.WEST);
    created_pane.add(created_field, BorderLayout.CENTER);

    central_pane.setLayout(new GridLayout(5,1,0,5));
    central_pane.add(name_pane);
    central_pane.add(person_pane);
    central_pane.add(machine_pane);
    central_pane.add(created_pane);
    central_pane.add(central_label);

    button_pane.setLayout(new GridLayout(1,2,5,0));
    button_pane.add(ok_button);
    button_pane.add(cancel_button);

    content_pane.setBorder(BorderFactory.createEmptyBorder(5,5,5,5));
    content_pane.setLayout(new BorderLayout());
    content_pane.add(upper_pane, BorderLayout.NORTH);
    content_pane.add(central_pane, BorderLayout.CENTER);
    content_pane.add(button_pane, BorderLayout.SOUTH);
    // Display
    if(parent != null) {
        Rectangle frame_bounds = parent.getBounds();
        setLocation(frame_bounds.x + (frame_bounds.width - SIZE.width) / 2, frame_bounds.y + (frame_bounds.height - SIZE.height) / 2);
    }
    else {
        Dimension screen_size = Toolkit.getDefaultToolkit().getScreenSize();
        setLocation((screen_size.width - SIZE.width) / 2, (screen_size.height - SIZE.height) / 2);
    }
    }

    public int getChoice() {
    setVisible(true);
    return choice;
    }

    private String getValue(String name) {
    String value = "";
    if(document != null) {
        try {
        Element value_element = (Element) MSMUtils.getNodeFromNamed(document.getDocumentElement(), name);
        value = MSMUtils.getValue(value_element);
        }
        catch (Exception error) {
        }
    }
    else {
        value = get("Error");
    }
    return value;
    }

    private class MyActionListener
    implements ActionListener {
    public void actionPerformed(ActionEvent event) {
        if(event.getSource() == ok_button) {
        choice = YES_OPTION;
        }
        else {
        choice = NO_OPTION;
        }
        self.dispose();
    }
    }

    static public void main(String[] args) {
    JFrame frame = new JFrame();
    frame.setSize(640,480);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.show();
    LockFileDialog dialog = new LockFileDialog(frame, "Test", new File(args[0]));
    int choice = dialog.getChoice();
    }

    static private String get(String key) {
    if(key.indexOf(".") == -1) {
        key = "LockFileDialog." + key;
    }
    return Gatherer.dictionary.get(key);
    }
}