addresspanel.java

该系统是一个基于p2p的即时聊天系统

/*
 * @(#) AddressPanel.java
 * Copyright 2004 HWStudio. All rights reserved.
 */
package hws.item.smart.panel.function.admin;
//导入核心Java类库
import java.awt.Insets;
import java.awt.FlowLayout;
import java.awt.GridBagLayout;
import java.awt.GridBagConstraints;
import java.util.List;
import java.util.ArrayList;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTable;
import javax.swing.JButton;
import javax.swing.JSplitPane;
import javax.swing.JScrollPane;
import javax.swing.ListSelectionModel;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import javax.swing.table.DefaultTableModel;
//导入自定义Java类库
import hws.item.smart.misc.ImageShop;
import hws.item.smart.misc.SBChanger;
import hws.item.smart.panel.function.admin.misc.OptionalInfoPanel;
import hws.item.smart.action.admin.address.StopAddressAction;
import hws.item.smart.action.admin.address.StartAddressAction;
import hws.item.smart.action.admin.address.RestartAddressAction;
import hws.item.smart.utility.chat.OptionalInfo;
import hws.item.smart.utility.admin.XMLAccessor;
import hws.item.smart.utility.admin.AddressService;
/**
 * 地址服务面板
 *
 * @version 0.1 2005-08-30
 * @author Hwerz
 */
public class AddressPanel extends JPanel {
    /*------------------------------------------------------------------------*
     *                                属性定义                                *
     *------------------------------------------------------------------------*/
    /**
     * 该类自身的一个静态引用
     */
    private static AddressPanel panel;
    /**
     * 地址信息面板
     */
    private AddressInfoPanel addressInfoPanel;
    /**
     * 可选信息面板
     */
    private OptionalInfoPanel optionalInfoPanel;
    /*------------------------------------------------------------------------*
     *                                构造函数                                *
     *------------------------------------------------------------------------*/
    /**
     * 构造函数为私有，这样在整个运行过程中该类就只能有一个实例
     */
    private AddressPanel() {
        super(new GridBagLayout());
        //启动地址服务
        AddressService.getInstance().start();
        //工具栏面板
        GridBagConstraints constraints = new GridBagConstraints(
            //gridx, gridy
            0, 0,
            //gridwidth, gridheight
            1, 1,
            //weightx, weighty
            1.0, 0.0,
            //anchor
            GridBagConstraints.NORTH,
            //fill
            GridBagConstraints.HORIZONTAL,
            //insets
            new Insets(5, 0, 0, 0),
            //ipadx, ipady
            0, 0);
        add(new Toolbar(), constraints);
        //分割条面板
        optionalInfoPanel = new OptionalInfoPanel();
        addressInfoPanel = new AddressInfoPanel();
        JSplitPane spliter = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, false,
            addressInfoPanel, optionalInfoPanel);
        spliter.setOneTouchExpandable(true);
        spliter.setDividerLocation(200);
        constraints.gridy = 1;
        constraints.weighty = 1.0;
        constraints.fill = GridBagConstraints.BOTH;
        constraints.insets = new Insets(5, 5, 5, 5);
        add(spliter, constraints);
    }
    /*------------------------------------------------------------------------*
     *                                公共方法                                *
     *------------------------------------------------------------------------*/
    /**
     * 对该类提供的一个全局访问点，用来实例化该对象
     *
     * @return 该类唯一的一个实例
     */
    public static AddressPanel getInstance() {
        if (panel == null) {
            panel = new AddressPanel();
        }
        return panel;
    }
    /**
     * 上线
     *
     * @param id ID
     * @param nickname 昵称
     * @param ip IP地址
     */
    public void online(String id, String nickname, String ip) {
        addressInfoPanel.addRow(id, nickname, ip);
    }
    /**
     * 下线
     *
     * @param id ID
     */
    public void offline(String id) {
        addressInfoPanel.deleteRow(id);
    }
    /**
     * 返回指定用户的IP
     *
     * @param id ID
     * @return 指定用户的IP
     */
    public String getIP(String id) {
        return addressInfoPanel.getIP(id);
    }
    /**
     * 判断指定的用户是否在线
     *
     * @param id ID
     * @return 如果指定的用户在线则返回true，否则返回false
     */
    public boolean isOnline(String id) {
        return addressInfoPanel.isRowExist(id);
    }
    /**
     * 返回所有在线用户
     *
     * @return 所有在线用户
     */
    public List getAllOnlineUsers() {
        return addressInfoPanel.getAllOnlineUsers();
    }
    /*------------------------------------------------------------------------*
     *                                 内部类                                 *
     *------------------------------------------------------------------------*/
    /**
     * 工具栏面板
     */
    class Toolbar extends JPanel {
        /**
         * Create a new instance of this class
         */
        public Toolbar() {
            super(new FlowLayout(FlowLayout.CENTER, 5, 0));
            //启动服务
            JButton button = new JButton(StartAddressAction.getInstance());
            button.setIcon(ImageShop.START_IMAGEICON);
            button.addMouseListener(new SBChanger(
                StartAddressAction.getInstance().getHintInfo(), false));
            add(button);
            //停止服务
            button = new JButton(StopAddressAction.getInstance());
            button.setIcon(ImageShop.STOP_IMAGEICON);
            button.addMouseListener(new SBChanger(
                StopAddressAction.getInstance().getHintInfo(), false));
            add(button);
            //重启服务
            button = new JButton(RestartAddressAction.getInstance());
            button.setIcon(ImageShop.RESTART_IMAGEICON);
            button.addMouseListener(new SBChanger(
                RestartAddressAction.getInstance().getHintInfo(), false));
            add(button);
        }
    }
    /**
     * 地址信息面板
     */
    class AddressInfoPanel extends JPanel implements ListSelectionListener {
        /**
         * 地址信息表格的视图
         */
        private JTable addressTable;
        /**
         * 地址信息表格的模型
         */
        private DefaultTableModel addressModel;
        /**
         * Create a new instance of this class
         */
        public AddressInfoPanel() {
            super(new GridBagLayout());
            //用户地址标签
            GridBagConstraints constraints = new GridBagConstraints(
                //gridx, gridy
                0, 0,
                //gridwidth, gridheight
                1, 1,
                //weightx, weighty
                0.0, 0.0,
                //anchor
                GridBagConstraints.NORTHWEST,
                //fill
                GridBagConstraints.NONE,
                //insets
                new Insets(0, 5, 0, 0),
                //ipadx, ipady
                0, 0);
            add(new JLabel("用户地址"), constraints);
            //地址信息表格
            Object[] header = {"ID", "昵称", "IP"};
            addressModel = new DefaultTableModel();
            addressModel.setColumnIdentifiers(header);
            addressTable = new JTable(addressModel) {
                public boolean isCellEditable(int row, int column) {
                    return false;
                }
            };
            addressTable.getSelectionModel().addListSelectionListener(this);
            addressTable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
            JScrollPane scroller = new JScrollPane(addressTable,
                JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
                JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
            constraints.gridy = 1;
            constraints.weightx = 1.0;
            constraints.weighty = 1.0;
            constraints.fill = GridBagConstraints.BOTH;
            constraints.insets = new Insets(0, 0, 0, 0);
            add(scroller, constraints);
        }
        /**
         * 添加记录
         *
         * @param id ID
         * @param nickname 昵称
         * @param ip IP地址
         */
        public void addRow(String id, String nickname, String ip) {
            int count = addressModel.getRowCount();
            addressModel.addRow(new Object[] {id, nickname, ip});
            addressTable.getSelectionModel().setSelectionInterval(count, count);
            OptionalInfo info = XMLAccessor.getUser(id).getOptionalInfo();
            optionalInfoPanel.setValue(info);
        }
        /**
         * 删除记录
         *
         * @param id ID
         */
        public void deleteRow(String id) {
            for (int i = 0; i < addressModel.getRowCount(); i++) {
                if (addressModel.getValueAt(i, 0).equals(id) == true) {
                    addressModel.removeRow(i);
                    break;
                }
            }
            if (addressModel.getRowCount() > 0) {
                addressTable.getSelectionModel().setSelectionInterval(0, 0);
            }
        }
        /**
         * 返回指定用户的IP
         *
         * @param id ID
         * @return 指定用户的IP
         */
        public String getIP(String id) {
            String ip = null;
            int count = addressModel.getRowCount();
            for (int i = 0; i < count; i++) {
                if (addressModel.getValueAt(i, 0).equals(id) == true) {
                    ip = String.valueOf(addressModel.getValueAt(i, 2));
                    break;
                }
            }
            return ip;
        }
        /**
         * 判断指定的用户是否已经存在
         *
         * @param id 指定用户的ID
         * @return 如果指定的用户已经存在则返回true，否则返回false
         */
        public boolean isRowExist(String id) {
            boolean exist = false;
            for (int i = 0; i < addressModel.getRowCount(); i++) {
                if (addressModel.getValueAt(i, 0).equals(id) == true) {
                    exist = true;
                    break;
                }
            }
            return exist;
        }
        /**
         * 返回所有在线用户
         *
         * @return 所有在线用户
         */
        public List getAllOnlineUsers() {
            List users = new ArrayList();
            for (int i = 0; i < addressModel.getRowCount(); i++) {
                users.add(addressModel.getValueAt(i, 0));
            }
            return users;
        }
        /**
         * 实现接口ListSelectionListener的方法
         *
         * @param event the event that characterizes the change
         */
        public void valueChanged(ListSelectionEvent event) {
            if (addressModel.getRowCount() > 0) {
                int row = addressTable.getSelectedRow();
                String id = addressModel.getValueAt(row, 0).toString();
                OptionalInfo info = XMLAccessor.getUser(id).getOptionalInfo();
                optionalInfoPanel.setValue(info);
            }
        }
    }
}