groupjoinpanel.java

用jxse开发的一个p2p通讯软件 有聊天 文件共享 视频3大功能

/*
*  Copyright (c) 2001 Sun Microsystems, Inc.  All rights
*  reserved.
*
*  Redistribution and use in source and binary forms, with or without
*  modification, are permitted provided that the following conditions
*  are met:
*
*  1. Redistributions of source code must retain the above copyright
*  notice, this list of conditions and the following disclaimer.
*
*  2. Redistributions in binary form must reproduce the above copyright
*  notice, this list of conditions and the following disclaimer in
*  the documentation and/or other materials provided with the
*  distribution.
*
*  3. The end-user documentation included with the redistribution,
*  if any, must include the following acknowledgment:
*  "This product includes software developed by the
*  Sun Microsystems, Inc. for Project JXTA."
*  Alternately, this acknowledgment may appear in the software itself,
*  if and wherever such third-party acknowledgments normally appear.
*
*  4. The groups "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA"
*  must not be used to endorse or promote products derived from this
*  software without prior written permission. For written
*  permission, please contact Project JXTA at http://www.jxta.org.
*
*  5. Products derived from this software may not be called "JXTA",
*  nor may "JXTA" appear in their group, without prior written
*  permission of Sun.
*
*  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
*  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
*  OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
*  DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
*  ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
*  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
*  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
*  USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
*  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
*  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
*  OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
*  SUCH DAMAGE.
*  ====================================================================
*
*  This software consists of voluntary contributions made by many
*  individuals on behalf of Project JXTA.  For more
*  information on Project JXTA, please see
*  <http://www.jxta.org/>.
*
*  This license is based on the BSD license adopted by the Apache Foundation.
*
*  $Id: GroupJoinPanel.java,v 1.8 2006/07/17 19:21:58 nano Exp $
*/

package net.jxta.myjxta.ui;

import net.jxta.credential.AuthenticationCredential;
import net.jxta.document.StructuredDocument;
import net.jxta.exception.PeerGroupException;
import net.jxta.exception.ProtocolNotSupportedException;
import net.jxta.impl.membership.passwd.PasswdMembershipService;
import net.jxta.membership.Authenticator;
import net.jxta.membership.MembershipService;
import net.jxta.myjxta.util.PeerGroupUtil;
import net.jxta.myjxta.util.Resources;
import net.jxta.peergroup.PeerGroup;

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.util.ResourceBundle;

/**
 *
 * @version $Id: GroupJoinPanel.java,v 1.8 2006/07/17 19:21:58 nano Exp $
 *
 * @author james todd [gonzo at jxta dot org]
 */

public class GroupJoinPanel
    extends JPanel {

    private static final ResourceBundle STRINGS = Resources.getStrings();
    
    /** The field that collects the password */
    private JPasswordField pwd  = null;
    private JButton ok = null;

    private PeerGroup peerGroup = null;
    private boolean isAuthorized = false;
    private boolean isCancel = false;

    /**
     * Create panel that collects the password to join the group
     */
    public GroupJoinPanel(PeerGroup peerGroup) {
        super();

        this.peerGroup = peerGroup;

        ui();
    }

    /**
     * Get the password the user typed in 
     *
     * @return the provided password
     */
    public String getPassword() {
        String pwd = new String(this.pwd.getPassword()).trim();

        return pwd.length() > 0 ? pwd : null;
    }

    public boolean isAuthorized() {
        return this.isAuthorized;
    }

    public boolean isCancel() {
        return this.isCancel;
    }

    /**
     * Build the ui of the panel 
     */
    private void ui() {
        GridBagLayout gb = new GridBagLayout();
        GridBagConstraints gbc = new GridBagConstraints();

        setLayout(gb);
        setBorder(BorderFactory.createEmptyBorder(3, 3, 3, 3));

        JLabel l = new JLabel(STRINGS.getString("label.group.password"));

        gbc.gridx = 0;
        gbc.gridy = 0;
        gbc.gridwidth = 1;
        gbc.gridheight = 1;
        gbc.weightx = 1.0;
        gbc.weighty = 1.0;
        gbc.anchor = GridBagConstraints.FIRST_LINE_START;
        gbc.fill = GridBagConstraints.BOTH;
        gbc.insets = new Insets(3, 3, 3, 3);
        gbc.ipadx = 0;
        gbc.ipady = 0;

        gb.setConstraints(l, gbc);

        add(l);

        this.pwd = new JPasswordField(15);
        
        this.pwd.addKeyListener(new KeyAdapter() {
            public void keyReleased(KeyEvent ke) {
                ok.setEnabled(isValidInput());
            }
        }); 

        gbc.gridx++;
        gbc.gridwidth = GridBagConstraints.REMAINDER;
        
        gb.setConstraints(this.pwd, gbc);

        add(this.pwd);

        JPanel bp = new JPanel();
        
        bp.setLayout(new GridLayout(1, 0));
        
        this.ok = new JButton(new AbstractAction() {
            public void actionPerformed(ActionEvent ae) {
                if (isValidInput()) {
                    exit();
                }
            }
        });

        this.ok.setText(STRINGS.getString("action.ok"));
        this.ok.addKeyListener(new AbstractButtonKeyListener(this.ok) {
            public void keyReleased(KeyEvent ke) {
                getButton().getAction().actionPerformed(null);
            }
        });
        this.ok.setEnabled(isValidInput());

        bp.add(this.ok);

//        JButton b = new JButton(new AbstractAction() {
//            public void actionPerformed(ActionEvent ae) {
//                clear();
//            }
//        });
//
//        b.setText(STRINGS.getString("action.clear"));
//        b.addKeyListener(new AbstractButtonKeyListener(b) {
//            public void keyReleased(KeyEvent ke) {
//                getButton().getAction().actionPerformed(null);
//            }
//        });
//        
//        bp.add(b);

        JButton b = new JButton(new AbstractAction() {
            public void actionPerformed(ActionEvent ae) {
                setCancel(true);
                exit();
            }
        });

        b.setText(STRINGS.getString("action.cancel"));
        b.addKeyListener(new AbstractButtonKeyListener(b) {
            public void keyReleased(KeyEvent ke) {
                getButton().getAction().actionPerformed(null);
            }
        });

        bp.add(b);
        
        gbc.gridx = 0;
        gbc.gridy++;
        gbc.gridwidth = 2;
        gbc.anchor = GridBagConstraints.LAST_LINE_END;
        gbc.fill = GridBagConstraints.NONE;

        gb.setConstraints(bp, gbc);

        add(bp);

//        getRootPane().setDefaultButton(this.ok);
    }

    private void setCancel(boolean isCancel) {
        this.isCancel = isCancel;
    }

    private void exit() {
        getRootPane().getParent().setVisible(false);
    }

    private boolean isValidInput() {
        String p = String.valueOf(this.pwd.getPassword()).trim();
        boolean isValid = p.length() > 0;
        
        this.isAuthorized = isValid && authorize(p);

        if (! isValid) {
            validate();
        }

        return this.isAuthorized;
    }

    private boolean authorize(String pwd) {
        boolean isAuthorized = false;

        try {
            StructuredDocument c = null;
            MembershipService ms = this.peerGroup.getMembershipService();
            Authenticator a = ms.apply(new AuthenticationCredential(this.peerGroup,
                null, c));

            PasswdMembershipService.PasswdAuthenticator pa =
                (PasswdMembershipService.PasswdAuthenticator)a;

            pa.setAuth1Identity(PeerGroupUtil.MEMBERSHIP_ID);
            pa.setAuth2_Password(pwd);

            if (pa.isReadyForJoin()) {
                ms.join(pa);
                isAuthorized = true;
            }
        } catch (PeerGroupException pge) {}
        catch (ProtocolNotSupportedException pnse) {}

        return isAuthorized;
    }
}