bsaddcontactdialog.java

一款即时通讯软件

package edu.ou.kmi.buddyspace.gui;

/*
 * BSAddContactDialog.java
 *
 *
 * Project: BuddySpace
 * (C) Copyright Knowledge Media Institute 2002
 *
 *
 * Created on 31 July 2002, 13:57
 */

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

import org.jabber.jabberbeans.util.JID;

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

/**
 * Dialog for adding and changing contacts.
 *
 * @author  Jiri Komzak, Knowledge Media Institute, Open University, United Kingdom
 */
public class BSAddContactDialog extends javax.swing.JDialog {
    
    private BSRosterBean rosterBean = null;
    private BSPresenceBean presenceBean = null;
    private String oldGroup = null;
    private JOptionPane optionPane;
    
    public String group = null;
    public JID jid = null;
    public String nick = null;
    
    private Frame parent;
    private JTextField jidTextField;
    private JTextField nickTextField;
    private JComboBox groupComboBox;
    
    /** Creates new form BSAddContactDialog for adding contact */
    public BSAddContactDialog(Frame parent, 
                              BSRosterBean rosterBean, BSPresenceBean presenceBean) {
                                  
        super(parent, "Add contact", true);
        init(parent, false, rosterBean, presenceBean);
    }
    
    /** Creates new form BSAddContactDialog for changing contact */
    public BSAddContactDialog(Frame parent, 
                              BSRosterBean rosterBean, BSPresenceBean presenceBean,
                              JID jid, String nick, String group) {
                                  
        super(parent, "Change contact", true);
        init(parent, true, rosterBean, presenceBean);
        setJID(jid);
        setNick(nick);
        setGroup(group);
    }
    
    /** Inits components and values common for adding and changing contact */
    private void init(Frame _parent, boolean _changeContact,
                      BSRosterBean rosterBean, BSPresenceBean presenceBean) {
                          
        parent = _parent;
        final boolean changeContact = _changeContact;
        this.rosterBean = rosterBean;
        this.presenceBean = presenceBean;
        
        jidTextField = new JTextField();
        nickTextField = new JTextField();
        groupComboBox = new JComboBox();
        if (changeContact)
            jidTextField.setEditable(false);
    
        // fills groups hashtable
        Iterator groups = rosterBean.getGroups();
        TreeSet tmpSet = new TreeSet();
        while(groups.hasNext()) {
            String groupName = (String) groups.next();
            //groupComboBox.addItem(groupName);
            tmpSet.add(groupName);
        }
        // fills sorted groups combo box
        while (!tmpSet.isEmpty()) {
            Object o = tmpSet.first();
            groupComboBox.addItem(o);
            tmpSet.remove(o);
        }
        groupComboBox.setEditable(true);
        
        Object[] fields = {"Jabber ID (JID): ", jidTextField,
                           "Nickname: ", nickTextField,
                           "Group: (select an existing one, or enter a new one)", groupComboBox};
        
        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);
        
        // action listening
        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)) {
                        if (changeContact)
                            changeContact();
                        else
                            addContact();
                        return;
                    }
                    else if (value.equals(cancelButton)) {
                        jid = null;
                        setVisible(false);
                    }
                }
            }
        });
    }
    
    /** Sets JID */
    public void setJID(JID jid) {
        if (jid != null)
            jidTextField.setText(jid.toString());
    }
    
    /** Sets selected group */
    public void setGroup(String group) {
        groupComboBox.setSelectedItem(group);
        oldGroup = group;
    }
    
    /** Sets nickname */
    public void setNick(String nick) {
        nickTextField.setText(nick);
    }
    
    /** 
     * Adds contact into the roster. 
     * Uses call to given <code>BSRosterBean</code>.
     */
    private void addContact() {
        JID jid = JID.fromString(jidTextField.getText());
        if (jid == null) {
            JOptionPane.showMessageDialog(this, "Invalid JID",
                                                "Error", 
                                                JOptionPane.ERROR_MESSAGE);
            return;
        }
        
        String nick = nickTextField.getText();
        if (nick == null || nick.equals("")) {
            JOptionPane.showMessageDialog(this, "Nickname cannot be empty",
                                                "Error", 
                                                JOptionPane.ERROR_MESSAGE);
            return;
        }
        // if there is the same jid with different nick already in roster
        String oldNick = rosterBean.getFriendlyName(jid);
        if (oldNick != null && !nick.equals(oldNick)) {
            /*Object[] options = {"Yes, change the nick", 
                                "No, add new contact with old nick"};
            int result = JOptionPane.showOptionDialog(
                            this,
                            "Contact with the JID already exists under nick \"" 
                            + oldNick 
                            + "\". Do you want to change the nick?\n",
                            "Change nick?",
                            JOptionPane.YES_NO_OPTION,
                            JOptionPane.QUESTION_MESSAGE,
                            null, options, options[1]);
            if (result == 1) {
                nick = oldNick;
            }*/
            
            Object[] options = {"Use new nickname", 
                                "Keep old nickname",
                                "Cancel"};
            int result = JOptionPane.showOptionDialog(
                            this,
                            "Possible duplicate contact for JID \"" +
                            jid.toString() + "\".\n" +
                            "It already exists in your roster under nickname \"" +
                            oldNick + "\".\n Do you want to use the new nickname \"" +
                            nick + "\" everywhere\n or add the contact with the old nickname?\n",
                            "Change nickname?",
                            JOptionPane.YES_NO_CANCEL_OPTION,
                            JOptionPane.QUESTION_MESSAGE,
                            null, options, options[2]);
            if (result == 1)
                nick = oldNick;
            else if (result == 2)
                return;
        }
        
        Object o = groupComboBox.getSelectedItem();
        String group = (o != null)? o.toString() : "";
        
        // finally adds the contact into roster
        if (rosterBean != null) {
            if (!rosterBean.addContact(jid, nick, group)) {
                JOptionPane.showMessageDialog(this, "Contact could not be added",
                                                    "Error", 
                                                    JOptionPane.ERROR_MESSAGE);
                return;
            }
            // and sends request for subscription
            if (presenceBean != null)
                presenceBean.sendSubscriptionRequest(jid);
        }
        
        setVisible(false);
    }
    
    
    /** 
     * Changes contact in the roster. 
     * Uses call to given <code>BSRosterBean</code>.
     */
    private void changeContact() {
        JID jid = JID.fromString(jidTextField.getText());
        
        String nick = nickTextField.getText();
        if (nick == null || nick.equals("")) {
            JOptionPane.showMessageDialog(this, "Nickname cannot be empty",
                                                "Error", 
                                                JOptionPane.ERROR_MESSAGE);
            return;
        }
        
        Object o = groupComboBox.getSelectedItem();
        String group = (o != null)? o.toString() : "";
        
        if (rosterBean != null) {
            if (BSMainFrame.NO_GROUP_NAME.equals(oldGroup))
                oldGroup = null;
            if (group == null || group.equals("") ||
                BSMainFrame.NO_GROUP_NAME.equals(group))
                group = null;
            if (!rosterBean.changeContact(jid, nick, group, oldGroup)) {
                JOptionPane.showMessageDialog(this, "Contact could not be added",
                                                    "Error", 
                                                    JOptionPane.ERROR_MESSAGE);
                return;
            }
        }
        
        setVisible(false);
    }
    
}