configurationpanel.java

jxta官方例程

/*
*  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 names "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 name, 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: ConfigurationPanel.java,v 1.11 2006/06/10 06:31:48 nano Exp $
*/

package net.jxta.myjxta.ui;

import net.jxta.myjxta.util.Constants;
import net.jxta.myjxta.util.Resources;

import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.GridLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;

import javax.swing.AbstractAction;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;

import java.net.MalformedURLException;
import java.net.URL;

import java.util.List;
import java.util.ResourceBundle;

/**
 *
 * @author james todd [gonzo at jxta dot org]
 * @version $Id: ConfigurationPanel.java,v 1.11 2006/06/10 06:31:48 nano Exp $
 */

public class ConfigurationPanel
    extends JPanel {

    private static final String LEFT_PARENTHESIS = "(";
    private static final String RIGHT_PARENTHESIS = ")";
    private static final String URL_DELIMITER = "://";
    private static final ResourceBundle STRINGS = Resources.getStrings();
    
    /** The field that contains the name of the peer */
    private JTextField peerName = null;

    /** The field for the password used for pse login */
    private JPasswordField pwd = null;

    /** The field used to confirm the password  for pse login */
    private JPasswordField vpwd = null;

    private JTextField httpProxy = null;

    private boolean isExit = false;
    
    private JButton ok = null;

    /**
     * Create a new ConfigurationPanel
     *
     * @param configuration file containing configuration information
     */
    public ConfigurationPanel(List configuration) {
        super();

        ui();
    }

    /**
     * Return the peerName the peer signed on with.
     * 
     * @return the peerName the peer signed on with
     * @exception  IllegalStateException if the peer did not complete login
     */
    public String getPeerName() {
        return this.peerName.getText().trim();
    }

    /**
      * Return the password the peer used  to secure the pse 
      * directory 
      * 
      * @return the pse password
      * @exception  IllegalStateException if the peer did not complete login
      */
    public String getPassword() {
        return String.valueOf(this.pwd.getPassword()).trim();
    }

    public URL getHttpProxy() {
        return toURL(this.httpProxy.getText());
    }
    
    public boolean isExit() {
        return this.isExit;
    }

    /**
     * Construct the UI layout to 
     * soliciated the login information
     */
    private void ui() {
        GridBagLayout gb = new GridBagLayout();
        GridBagConstraints gbc = new GridBagConstraints();

        // set up the layout and border conditions
        setLayout(gb);
        setBorder(BorderFactory.createEmptyBorder(3, 3, 3, 3));

        /*
        //  add the combo box containing the configuration options
        DefaultComboBoxModel cm = new DefaultComboBoxModel();

        for (Iterator ci = this.configuration.iterator(); ci.hasNext(); ) {
            cm.addElement((URL)ci.next());
        }

        this.configOptions = new JComboBox(cm);

        gbc.gridx = 0;
        gbc.gridy = 0;
        gbc.gridwidth = GridBagConstraints.REMAINDER;
        gbc.insets = new Insets(3, 3, 3, 3);
        gbc.anchor = GridBagConstraints.NORTHWEST;
        gbc.weightx = 0.0;
        gbc.weighty = 0.0;
        gbc.fill = GridBagConstraints.BOTH;

        gb.setConstraints(this.configOptions, gbc);

        // xxx: support selectible configurations
        //        add(this.configOptions);
        */
        
        //add the  input widgets for the peer name
        JLabel l = new JLabel(STRINGS.getString("label.config.user.name"));

        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.peerName = new JTextField(15);
        
        this.peerName.addKeyListener(new KeyAdapter() {
            // xxx: doesn't work, no harm
            public void keyPressed(KeyEvent ke) {
                if (ke.getKeyCode() == KeyEvent.VK_TAB) {
                    int l = peerName.getText().length();
                    
                    peerName.select(l, l);
                }
            }
            
            public void keyReleased(KeyEvent ke) {
                ok.setEnabled(isValidInput());
            }
        });
        
        String un = System.getProperty("user.name", "");
        
        this.peerName.setText(un);
        this.peerName.setCaretPosition(un.length());
        this.peerName.selectAll();
        
        gbc.gridx++;
        gbc.gridwidth = GridBagConstraints.REMAINDER;

        gb.setConstraints(this.peerName, gbc);

        add(this.peerName);

        // add the input widget for the pse password
        l = new JLabel(STRINGS.getString("label.config.user.password"));

        gbc.gridx = 0;
        gbc.gridy++;
        gbc.gridwidth = 1;
        gbc.anchor = GridBagConstraints.LINE_START;

        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;
        gbc.fill = GridBagConstraints.BOTH;

        gb.setConstraints(this.pwd, gbc);

        add(this.pwd);

        // add the input widgets that confirm the password
        l = new JLabel(STRINGS.getString("label.config.user.password.validate"));

        gbc.gridx = 0;
        gbc.gridy++;
        gbc.gridwidth = 1;
        gbc.anchor = GridBagConstraints.LINE_START;

        gb.setConstraints(l, gbc);

        add(l);

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

        gbc.gridx++;
        gbc.gridwidth = GridBagConstraints.REMAINDER;
        gbc.fill = GridBagConstraints.BOTH;

        gb.setConstraints(this.vpwd, gbc);

        add(this.vpwd);

        l = new JLabel(STRINGS.getString("label.config.proxy.http") +
            LEFT_PARENTHESIS + STRINGS.getString("label.optional") +
            RIGHT_PARENTHESIS);
                
        gbc.gridx = 0;
        gbc.gridy++;
        gbc.gridwidth = 1;
        gbc.anchor = GridBagConstraints.LINE_START;

        gb.setConstraints(l, gbc);

        add(l);

        this.httpProxy = new JTextField(15);
        
        this.httpProxy.setText(Constants.getInstance().get(Constants.PROXY_HTTP));
        this.httpProxy.addKeyListener(new KeyAdapter() {
            public void keyReleased(KeyEvent ke) {
                ok.setEnabled(isValidInput());
            }
        });

        gbc.gridx++;
        gbc.gridwidth = GridBagConstraints.REMAINDER;
        gbc.fill = GridBagConstraints.BOTH;

        gb.setConstraints(this.httpProxy, gbc);

        add(this.httpProxy);
        
        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) {
                setExit(true);
                exit();
            }
        });

        b.setText(STRINGS.getString("action.exit"));
        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 setExit(boolean isExit) {
        this.isExit = isExit;
    }

    private void clear() {
        this.peerName.setText(null);
        this.pwd.setText(null);
        this.vpwd.setText(null);

        validate();
    }

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

    /**
     * Validate user input and display a descriptive message
     * if the input is incorrect
     */
    private boolean isValidInput() {
        String n = this.peerName.getText().trim();
        String p = String.valueOf(this.pwd.getPassword()).trim();
        String vp = String.valueOf(this.vpwd.getPassword()).trim();
        String pr = this.httpProxy.getText().trim();
        URL pu = toURL(pr);
        boolean isValid = n.length() > 0 &&
            p.length() > 0 &&
            vp.length() > 0 &&
            p.equals(vp) &&
            (pr.length() == 0 ||
                (pr.length() > 0 &&
                    pu != null));
        
        if (pu != null) {
            this.httpProxy.setText(pu.toString());
        }

        if (! isValid) {
            validate();
        }

        return isValid;
    }
    
    private URL toURL(String s) {
        URL u = null;
        
        if (s != null &&
            s.trim().length() > 0) {
            try {
                u = new URL(s);
            } catch (MalformedURLException mue) {
            }
        
            if (u == null) {
                try {
                    u = new URL(Constants.PROTOCOL_HTTP + URL_DELIMITER + s);
                } catch (MalformedURLException mue) {
                }
            }
        }
        
        if (u != null &&
            u.getPort() == -1) {
            u = null;
        }
                
        return u;
    }
}