userpanel.java

该系统是一个基于p2p的即时聊天系统

/*
 * @(#) UserPanel.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.awt.event.MouseEvent;
import java.awt.event.MouseAdapter;
import javax.swing.JTree;
import javax.swing.JPanel;
import javax.swing.JButton;
import javax.swing.JSplitPane;
import javax.swing.SwingUtilities;
import javax.swing.tree.TreePath;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.event.TreeSelectionEvent;
import javax.swing.event.TreeSelectionListener;
//导入自定义Java类库
import hws.item.smart.misc.ImageShop;
import hws.item.smart.misc.SBChanger;
import hws.item.smart.menu.pop.UserPanelMenu;
import hws.item.smart.panel.function.admin.misc.UserInfoPanel;
import hws.item.smart.panel.function.admin.misc.UserViewPanel;
import hws.item.smart.action.admin.user.StopUserAction;
import hws.item.smart.action.admin.user.StartUserAction;
import hws.item.smart.action.admin.user.RestartUserAction;
import hws.item.smart.utility.chat.UserInfo;
import hws.item.smart.utility.admin.UserService;
/**
 * 用户服务面板
 *
 * @version 0.1 2005-08-30
 * @author Hwerz
 */
public class UserPanel extends JPanel {
    /*------------------------------------------------------------------------*
     *                                属性定义                                *
     *------------------------------------------------------------------------*/
    /**
     * 该类自身的一个静态引用
     */
    private static UserPanel panel;
    /**
     * 用户视图面板
     */
    private UserViewPanel1 userViewPanel;
    /**
     * 用户信息面板
     */
    private UserInfoPanel userInfoPanel;
    /*------------------------------------------------------------------------*
     *                                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 UserPanel() {
        super(new GridBagLayout());
        //启动用户服务
        UserService.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
        userInfoPanel = new UserInfoPanel();
        userViewPanel = new UserViewPanel1();
        JSplitPane spliter = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, false,
            userViewPanel, userInfoPanel);
        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 UserPanel getInstance() {
        if (panel == null) {
            panel = new UserPanel();
        }
        return panel;
    }
    /**
     * 刷新
     */
    public void refresh() {
        userViewPanel.reloadUsers();
    }
    /**
     * 删除
     */
    public void delete() {
        userViewPanel.deleteSelectedUser();
        FilePanel.getInstance().refresh();
        FriendPanel.getInstance().refresh();
        GettingPanel.getInstance().refresh();
        SettingPanel.getInstance().refresh();
    }
    /*------------------------------------------------------------------------*
     *                                 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(StartUserAction.getInstance());
            button.setIcon(ImageShop.START_IMAGEICON);
            button.addMouseListener(new SBChanger(
                StartUserAction.getInstance().getHintInfo(), false));
            add(button);
            //停止服务
            button = new JButton(StopUserAction.getInstance());
            button.setIcon(ImageShop.STOP_IMAGEICON);
            button.addMouseListener(new SBChanger(
                StopUserAction.getInstance().getHintInfo(), false));
            add(button);
            //重启服务
            button = new JButton(RestartUserAction.getInstance());
            button.setIcon(ImageShop.RESTART_IMAGEICON);
            button.addMouseListener(new SBChanger(
                RestartUserAction.getInstance().getHintInfo(), false));
            add(button);
        }
    }
    /**
     * 用户视图面板
     */
    class UserViewPanel1 extends UserViewPanel
        implements TreeSelectionListener {
        /**
         * Create a new instance of this class
         */
        public UserViewPanel1() {
            super();
            addTreeSelectionListener(this);
            addMouseListener2(new MouseEventHandler());
        }
        /**
         * 实现TreeSelectionListener接口的方法
         *
         * @param event TreeSelectionEvent对象
         */
        public void valueChanged(TreeSelectionEvent event) {
            DefaultMutableTreeNode node = (DefaultMutableTreeNode) event
                .getPath().getLastPathComponent();
            if (node == getRootNode()) {
                userInfoPanel.setValue(null);
            } else {
                UserInfo info = (UserInfo) node.getUserObject();
                userInfoPanel.setValue(info);
            }
        }
    }
    /**
     * 鼠标事件处理器
     */
    class MouseEventHandler extends MouseAdapter {
        /**
         * 覆盖超类MouseAdapter的方法
         *
         * @param event MouseEvent对象
         */
        public void mouseClicked(MouseEvent event) {
            int x = event.getX();
            int y = event.getY();
            JTree tree = (JTree) event.getSource();
            TreePath path = tree.getPathForLocation(x, y);
            if (path != null) {
                tree.setSelectionPath(path);
                DefaultMutableTreeNode node = (DefaultMutableTreeNode) path
                    .getLastPathComponent();
                if (SwingUtilities.isRightMouseButton(event) && node.isLeaf()) {
                    UserPanelMenu.getInstance().show(tree, x, y);
                }
            }
        }
    }
}