logindialog.java

Rapla是一个灵活的多用户资源管理系统。它提供的一些功能有：日历GUI

/*--------------------------------------------------------------------------*
 | Copyright (C) 2006 Christopher Kohlhaas, Frithjof Kurtz                  |
 |                                                                          |
 | This program is free software; you can redistribute it and/or modify     |
 | it under the terms of the GNU General Public License as published by the |
 | Free Software Foundation. A copy of the license has been included with   |
 | these distribution in the COPYING file, if not go to www.fsf.org         |
 |                                                                          |
 | As a special exception, you are granted the permissions to link this     |
 | program with every library, which license fulfills the Open Source       |
 | Definition as published by the Open Source Initiative (OSI).             |
 *--------------------------------------------------------------------------*/
package org.rapla.client.internal;

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.FocusAdapter;
import java.awt.event.FocusEvent;

import javax.swing.Action;
import javax.swing.BorderFactory;
import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;

import org.rapla.components.layout.TableLayout;
import org.rapla.components.xmlbundle.I18nBundle;
import org.rapla.components.xmlbundle.LocaleChangeEvent;
import org.rapla.components.xmlbundle.LocaleChangeListener;
import org.rapla.components.xmlbundle.LocaleSelector;
import org.rapla.framework.RaplaContext;
import org.rapla.framework.RaplaException;
import org.rapla.gui.toolkit.RaplaFrame;

public final class LoginDialog extends RaplaFrame
    implements
        LocaleChangeListener
{
    private static final long serialVersionUID = -1887723833652617352L;

    JPanel jPanelFields = new JPanel();

    JPanel langSelection = new JPanel();
    JLabel chooseLanguageLabel = new JLabel();

    JTextField username = new JTextField(15);
    JPasswordField password = new JPasswordField(15);

    JLabel usernameLabel = new JLabel();
    JLabel passwordLabel = new JLabel();
    JButton loginBtn = new JButton();
    JButton exitBtn = new JButton();
    JPanel content = new JPanel();
    I18nBundle i18n;
    protected LocaleSelector localeSelector;


    public LoginDialog(RaplaContext sm) throws RaplaException {
        super( sm) ;
        i18n = (I18nBundle) sm.lookup(I18nBundle.ROLE + "/org.rapla.RaplaResources");
        localeSelector = (LocaleSelector) sm.lookup(LocaleSelector.ROLE);
        localeSelector.addLocaleChangeListener(this);
    }
    public static LoginDialog create(RaplaContext sm,JComponent infoPanel, JComponent languageSelector) throws RaplaException {
        LoginDialog dlg = new LoginDialog(sm);
        dlg.init(infoPanel,languageSelector);
        return dlg;
    }

    public void setLoginAction(Action action) {
       loginBtn.setAction( action );
    }

    public void setExitAction(Action action) {
        exitBtn.setAction( action );
    }

    private void init(JComponent infoPanel, JComponent languageSelector)
    {
        Container contentPane = getContentPane();
        content.setBorder(BorderFactory.createEmptyBorder(0,10,0,10));
        content.setLayout(  new BorderLayout());
        content.add(jPanelFields,BorderLayout.SOUTH);
        content.add(infoPanel,BorderLayout.CENTER);

        langSelection.setLayout(new BoxLayout(langSelection,BoxLayout.X_AXIS));
        langSelection.add(languageSelector);
        langSelection.add(Box.createHorizontalGlue());

        double pre =TableLayout.PREFERRED;
        double fill =TableLayout.FILL;
        double[][] sizes = {{pre,10, fill},
                            {pre,5,pre,5,pre,5}};
        TableLayout tableLayout = new TableLayout(sizes);
        jPanelFields.setLayout(tableLayout);
        jPanelFields.add(chooseLanguageLabel,"0,0");
        jPanelFields.add(usernameLabel,"0,2");
        jPanelFields.add(passwordLabel,"0,4");
        jPanelFields.add(langSelection,"2,0");
        jPanelFields.add(username,"2,2");
        jPanelFields.add(password,"2,4");

        username.setColumns( 14 );
        password.setColumns( 14 );
        Listener listener = new Listener();
        password.addActionListener(listener);
        languageSelector.addFocusListener(listener);

        contentPane.setLayout( new BorderLayout());
        contentPane.add( content, BorderLayout.CENTER );
        JPanel buttonPanel = new JPanel();
        GridLayout gridLayout = new GridLayout(1,2);
        buttonPanel.setLayout(gridLayout);
        buttonPanel.setBorder( BorderFactory.createEmptyBorder(10,10,10,10 ));
        gridLayout.setHgap( 20);
        contentPane.add( buttonPanel,BorderLayout.SOUTH );
        buttonPanel.add( exitBtn );
        buttonPanel.add( loginBtn );
        this.getRootPane().setDefaultButton( loginBtn );
        //  setDefault(1);
        setLocale();
        username.requestFocus();
    }

    public String getUsername() {
        return username.getText();
    }

    public char[] getPassword() {
        return password.getPassword();
    }


    /** overrides localeChanged from DialogUI*/
    public void localeChanged(LocaleChangeEvent evt) {
        setLocale();
    }

    private I18nBundle getI18n() {
        return i18n;
    }


    private void setLocale() {
        chooseLanguageLabel.setText(getI18n().getString("choose_language"));
        exitBtn.setText(getI18n().getString("exit"));
        loginBtn.setText(getI18n().getString("login"));
        usernameLabel.setText(getI18n().getString("username") + ":");
        passwordLabel.setText(getI18n().getString("password") + ":");
        setTitle(getI18n().getString("logindialog.title"));
        repaint();
    }

    public void dispose() {
        super.dispose();
        localeSelector.removeLocaleChangeListener(this);
    }

    public void testEnter(String newUsername,String newPassword) {
        username.setText(newUsername);
        password.setText(newPassword);
    }

    class Listener extends FocusAdapter implements ActionListener {
        boolean bInit = false;
        public void focusGained(FocusEvent e) {
            if (!bInit) {
                username.requestFocus();
                bInit = true;
            }
        }

        public void actionPerformed(ActionEvent event) {
            if ( event.getSource() == password) {
                loginBtn.doClick();
                return;
            } // end of if ()
        }
    }

}