bspubsubgetitemsdlg.java

一款即时通讯软件

package edu.ou.kmi.buddyspace.plugins.pubsub.gui;

/*
 * BSPubsubGetItemsDlg.java
 *
 * Project: BuddySpace
 * (C) Copyright Knowledge Media Institute 2003
 *
 *
 * Created on 4 December 2002, 15:49
 */

import java.awt.*;
import javax.swing.*;
import java.beans.*; // Property change stuff
//import java.util.*;

//import org.jabber.jabberbeans.*;
import org.jabber.jabberbeans.util.*;

import edu.ou.kmi.buddyspace.gui.*;
import edu.ou.kmi.buddyspace.core.*;

/**
 * <code>BSPubsubGetItemsDlg</code> allows input of parameters for
 * pubsub get items for a node.
 *
 * @author  Jiri Komzak, Knowledge Media Institute, Open University, United Kingdom
 */

public class BSPubsubGetItemsDlg extends JDialog {
    private JOptionPane optionPane;
    public JID pubsubJID;
    public String pubsubNode;
    
    /** Constructor */
    public BSPubsubGetItemsDlg(Frame _parent, String title, JID jid, String node) {
                         
        super(_parent, title, true);
        
        final Frame parent = _parent;
        
        final JTextField jidTextField = new JTextField((jid != null)? jid.toString() : "");
        final JTextField nodeTextField = new JTextField((node != null)? node : "");
        
        Object[] fields = {/*"You can create a new group chat 'room'\n" +
                           "or join an existing one, if you know its name.",
                           " ",*/
                           "JID of pubsub component: ", jidTextField,
                           "Node in the pubsub component: ", nodeTextField};
        
        final String okButton = "OK";
        final String cancelButton = "Cancel";
        Object[] options = {okButton, cancelButton};

        optionPane = new JOptionPane(fields, 
                                     JOptionPane.PLAIN_MESSAGE,
                                     JOptionPane.OK_CANCEL_OPTION,
                                     null,
                                     options,
                                     options[0]);
        setContentPane(optionPane);
        setDefaultCloseOperation(DO_NOTHING_ON_CLOSE);

        pack();
        setLocationRelativeTo(parent);
        
        // handles actions
        optionPane.addPropertyChangeListener(new PropertyChangeListener() {
            public void propertyChange(PropertyChangeEvent e) {
                String prop = e.getPropertyName();
			
                if (isVisible() 
                    && (e.getSource() == optionPane)
                    && (prop.equals(JOptionPane.VALUE_PROPERTY) ||
                      prop.equals(JOptionPane.INPUT_VALUE_PROPERTY))) {
                    Object value = optionPane.getValue();

                    if (value == JOptionPane.UNINITIALIZED_VALUE) {
                        // ignore reset
                        return;
                    }

                    // Reset the JOptionPane's value.
                    // If you don't do this, then if the user
                    // presses the same button next time, no
                    // property change event will be fired.
                    optionPane.setValue(JOptionPane.UNINITIALIZED_VALUE);

                    if (value.equals(okButton)) {
                        pubsubNode = nodeTextField.getText();
                        String jidStr = jidTextField.getText();
                        pubsubJID = JID.fromString(jidStr);
                        if (pubsubJID == null) {
                            JOptionPane.showMessageDialog(parent, 
                                          "Invalid JID of the pubsub component",
                                          "Error", 
                                          JOptionPane.ERROR_MESSAGE);
                            return;
                        }
                        setVisible(false);
                    }
                    else if (value.equals(cancelButton)) {
                        pubsubJID = null;
                        pubsubNode = null;
                        setVisible(false);
                    }
                }
            }
        });
    }
    
}