source: trunk/gli/src/org/greenstone/gatherer/gui/WarningDialog.java@ 5593

package org.greenstone.gatherer.gui;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import org.greenstone.gatherer.Configuration;
import org.greenstone.gatherer.Dictionary;
import org.greenstone.gatherer.Gatherer;
import org.greenstone.gatherer.util.FocusChangerTask;
import org.greenstone.gatherer.util.Utility;

/** Warn a user that they are about to add folder level metadata. */
public class WarningDialog
    extends JDialog 
    implements ActionListener, KeyListener {

    static final private Dimension LABEL_SIZE = new Dimension(150, 25);
    static final private Dimension NORMAL_SIZE = new Dimension(400, 160);
    static final private Dimension SETTING_SIZE = new Dimension(400, 200);

    private Dictionary dictionary;
    private int result = JOptionPane.CANCEL_OPTION;
    private JButton cancel_button;
    private JButton ok_button;
    private JCheckBox show_check;
    private JTextField value_field;
    private JPanel value_panel;
    private String affected_property;
    private String full_property;
    private String warning_name;

    public WarningDialog(String full_property) {
    this(full_property, false, null, Gatherer.dictionary);
    }

    public WarningDialog(String full_property, boolean can_cancel) {
    this(full_property, can_cancel, null, Gatherer.dictionary);
    }

    public WarningDialog(String full_property, String affected_property) {
    this(full_property, false, affected_property, Gatherer.dictionary);
    }

    public WarningDialog(String full_property, boolean can_cancel, Dictionary dictionary) {
    this(full_property, can_cancel, null, dictionary);
    }

    public WarningDialog(String full_property, String affected_feature, Dictionary dictionary) {
    this(full_property, false, affected_feature, dictionary);
    }

    public WarningDialog(String full_property, boolean can_cancel, String affected_property) {
    this(full_property, can_cancel, affected_property, Gatherer.dictionary);
    }
    
    public WarningDialog(String full_property, boolean can_cancel, String affected_property, Dictionary dictionary) {
    super(Gatherer.g_man, "Warning", true);

    // Determine the name of this prompt.
    this.affected_property = affected_property;
    this.dictionary = dictionary;
    this.full_property = full_property;
    warning_name = full_property.substring(full_property.indexOf(".") + 1);

    // Now build dialog.
    if (affected_property != null) {
        setSize(SETTING_SIZE);
    }
    else {
        setSize(NORMAL_SIZE);
    }
    Dictionary.setText(this, warning_name + ".Title");

    // Creation
    JPanel content_pane = (JPanel) getContentPane();
    JPanel text_pane = new JPanel();
    JLabel icon_label = new JLabel(Utility.getImage("gatherer_medium.gif"));

    JTextArea text_area = new JTextArea();
    text_area.setCaretPosition(0);
    text_area.setEditable(false);
    text_area.setLineWrap(true);
    text_area.setWrapStyleWord(true);
    Dictionary.setText(text_area, warning_name + ".Message");

    value_panel = new JPanel();
    JLabel value_label = new JLabel();
    value_label.setPreferredSize(LABEL_SIZE);
    Dictionary.setText(value_label, "WarningDialog.Value");

    value_field = new JTextField();
    JPanel bottom_pane = new JPanel();
    show_check = new JCheckBox();
    Dictionary.setText(show_check, "WarningDialog.Dont_Show_Again");
    JPanel control_pane = new JPanel();
    ok_button = new JButton();
    Dictionary.setBoth(ok_button, "General.OK", "General.OK_Tooltip");
    cancel_button = new JButton();
    Dictionary.setBoth(cancel_button, "General.Cancel", "General.Pure_Cancel_Tooltip");

    // Connection
    ok_button.addActionListener(this);
    cancel_button.addActionListener(this);
    ok_button.addKeyListener(this);
    cancel_button.addKeyListener(this);

    // Layout
    icon_label.setBorder(BorderFactory.createEmptyBorder(0,0,0,5));

    value_label.setBorder(BorderFactory.createEmptyBorder(0, icon_label.getPreferredSize().width, 0, 0));

    value_panel.setBorder(BorderFactory.createEmptyBorder(5,0,0,0));
    value_panel.setLayout(new BorderLayout());
    value_panel.add(value_label, BorderLayout.WEST);
    value_panel.add(value_field, BorderLayout.CENTER);

    text_pane.setLayout(new BorderLayout());
    text_pane.add(icon_label, BorderLayout.WEST);
    text_pane.add(new JScrollPane(text_area), BorderLayout.CENTER);
    if(affected_property != null) {
        text_pane.add(value_panel, BorderLayout.SOUTH);
    }

    if(can_cancel) {
        control_pane.setLayout(new GridLayout(1,2,5,0));
        control_pane.add(ok_button);
        control_pane.add(cancel_button);
    }
    else {
        control_pane.setLayout(new BorderLayout());
        control_pane.add(ok_button, BorderLayout.EAST);
    }

    bottom_pane.setBorder(BorderFactory.createEmptyBorder(5,0,0,0));
    bottom_pane.setLayout(new BorderLayout());
    bottom_pane.add(show_check, BorderLayout.CENTER);
    bottom_pane.add(control_pane, BorderLayout.EAST);

    content_pane.setBorder(BorderFactory.createEmptyBorder(5,5,5,5));
    content_pane.setLayout(new BorderLayout());
    content_pane.add(text_pane, BorderLayout.CENTER);
    content_pane.add(bottom_pane, BorderLayout.SOUTH);

    // Position
    Dimension size = getSize();
    if (Gatherer.g_man != null) {
        Rectangle frame_bounds = Gatherer.g_man.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 void actionPerformed(ActionEvent event) {
    boolean bad_value = false;
    if(event.getSource() == ok_button) {
        if(affected_property != null && Gatherer.config != null) {
        String value = value_field.getText();
        if(value.length() == 0) {
            bad_value = true;
        }
        else if(value_field instanceof URLField) {
            bad_value = !((URLField)value_field).validateURL();
        }
        if(!bad_value) {
            // Store the value of the property
            Gatherer.config.setString(affected_property, true, value_field.getText());
        }
        }
        if(!bad_value) {
        result = JOptionPane.OK_OPTION;
        }
    }
    if(!bad_value) {
        if(Gatherer.config != null) {
        // Store the state of the show message checkbox.
        Gatherer.config.set(full_property, true, !show_check.isSelected());
        }
        // Done.
        dispose();
    }
    else {
        JOptionPane.showMessageDialog(Gatherer.g_man, Dictionary.get("WarningDialog.Invalid_Value"), Dictionary.get("General.Error"), JOptionPane.ERROR_MESSAGE);
    }
    }


    /** Gives notification of key events on the buttons */
    public void keyPressed(KeyEvent e) {
    if (e.getKeyCode() == KeyEvent.VK_ENTER) {
        // Enter: Click the button in focus
        Object source = e.getSource();
        if (source instanceof AbstractButton) {
        ((AbstractButton) source).doClick();
        }
    }
    }

    public void keyReleased(KeyEvent e) { }

    public void keyTyped(KeyEvent e) { }


    public int display() {
    ///ystem.err.println("Show " + full_property + ": " + Gatherer.config.get(full_property, false));
    if(Gatherer.config == null || Gatherer.config.get(full_property, false)) {
        // Create and run the shortlived move focus thread
        FocusChangerTask task = null;
        if(affected_property != null) {
        task = new FocusChangerTask(value_field);
        }
        else {
        task = new FocusChangerTask(ok_button);
        }
        task.start();
        show();
    }
    // We are no longer showing this dialog, so result must always be true.
    else {
        result = JOptionPane.OK_OPTION;
    }
    return result;
    }

    /** Allows you to replace the generic text field control with a JTextField subclass with further functionality. For instance you might provide a URLField to allow only valid URLs to be accepted.
     * @param  control the JTextField subclass you want to use for the control
     */
    public void setValueField(JTextField control) {
    // Remove the current control
    value_panel.remove(value_field);
    // Replace with the new one
    value_field = control;
    // Re-add
    value_panel.add(value_field, BorderLayout.CENTER);
    }
}