chatviewpanel.java

该系统是一个基于p2p的即时聊天系统

/*
 * @(#) ChatViewPanel.java
 * Copyright 2004 HWStudio. All rights reserved.
 */
package hws.item.smart.panel.function.chat.misc;
//导入核心Java类库
import java.io.IOException;
import java.awt.Color;
import java.awt.Cursor;
import java.awt.Insets;
import java.awt.Graphics;
import java.awt.FontMetrics;
import java.awt.GridBagLayout;
import java.awt.GridBagConstraints;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseAdapter;
import java.net.MalformedURLException;
import java.util.List;
import java.util.Vector;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JButton;
import javax.swing.JTextArea;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.JColorChooser;
//导入自定义Java类库
import hws.item.smart.Smart;
import hws.item.smart.misc.ColorShop;
import hws.item.smart.misc.ImageShop;
import hws.item.smart.misc.SBChanger;
import hws.item.smart.misc.XMLConfig;
import hws.item.smart.misc.PopToolkit;
import hws.item.smart.misc.StringShop;
import hws.item.smart.panel.function.chat.ViewPanel;
import hws.item.smart.dialog.SelectFontDialog;
import hws.item.smart.dialog.ViewFriendDialog;
import hws.item.smart.utility.chat.UserInfo;
import hws.item.smart.utility.chat.FriendsInfo;
//导入第三方Java类库
import org.jdom.Element;
import org.jdom.Document;
import org.jdom.output.XMLOutputter;
import org.apache.xmlrpc.XmlRpc;
import org.apache.xmlrpc.XmlRpcClient;
import org.apache.xmlrpc.XmlRpcRequest;
import org.apache.xmlrpc.XmlRpcException;
import net.infonode.docking.View;
import net.infonode.docking.RootWindow;
import net.infonode.docking.SplitWindow;
import net.infonode.docking.util.ViewMap;
import net.infonode.docking.util.DockingUtil;
import net.infonode.docking.theme.DockingWindowsTheme;
import net.infonode.docking.theme.GradientDockingTheme;
import net.infonode.docking.properties.TabWindowProperties;
import net.infonode.docking.properties.RootWindowProperties;
/**
 * 聊天场景面板
 *
 * @version 0.1 2005-08-29
 * @author Hwerz
 */
public class ChatViewPanel extends JPanel {
    /*------------------------------------------------------------------------*
     *                                属性定义                                *
     *------------------------------------------------------------------------*/
    /**
     * 聊天场景根面板
     */
    private RootWindow root;
    /**
     * 聊天记录文本域
     */
    private JTextArea logTextArea;
    /**
     * 发送消息文本域
     */
    private JTextArea msgTextArea;
    /**
     * 好友信息
     */
    private UserInfo user;
    /*------------------------------------------------------------------------*
     *                                构造函数                                *
     *------------------------------------------------------------------------*/
    /**
     * Create a new instance of this class
     *
     * @param id 好友ID
     */
    public ChatViewPanel(String id) {
        super(new GridBagLayout());
        user = UserInfo.getRemoteUserInfo(id);
        //聊天记录文本域
        logTextArea = new JTextArea();
        logTextArea.setEditable(false);
        JScrollPane scroller1 = new JScrollPane(logTextArea,
            JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
            JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
        View view1 = new View("", null, scroller1);
        List list = view1.getCustomTabComponents();
        list.add(new JLabel("与"));
        list.add(new LabelPlus(user.getBasicInfo().getNickname()));
        list.add(new JLabel("聊天"));
        //发送消息文本域
        msgTextArea = new JTextArea();
        JScrollPane scroller2 = new JScrollPane(msgTextArea,
            JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
            JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
        View view2 = new View("", null, scroller2);
        view2.getCustomTabComponents().add(new Toolbar());
        //分割条面板
        SplitWindow spliter = new SplitWindow(false, 0.45f, view1, view2);
        //聊天场景根面板
        root = createRootWindow();
        root.setWindow(spliter);
        setRootWindow(root);
        GridBagConstraints constraints = new GridBagConstraints(
            //gridx, gridy
            0, 0,
            //gridwidth, gridheight
            1, 1,
            //weightx, weighty
            1.0, 1.0,
            //anchor
            GridBagConstraints.NORTH,
            //fill
            GridBagConstraints.BOTH,
            //insets
            new Insets(0, 0, 0, 0),
            //ipadx, ipady
            0, 0);
        add(root, constraints);
    }
    /*------------------------------------------------------------------------*
     *                                公共方法                                *
     *------------------------------------------------------------------------*/
    /**
     * 发送消息
     */
    public void send() {
        String msg = msgTextArea.getText().trim();
        if (msg.length() == 0) {
            JOptionPane.showMessageDialog(Smart.getInstance(),
                "要发送的消息不可为空！", StringShop.HINT_TITLE,
                JOptionPane.INFORMATION_MESSAGE);
        } else {
            try {
                XmlRpc.setDriver("org.apache.xerces.parsers.SAXParser");
                XmlRpcClient client = new XmlRpcClient(genURL());
                client.execute(genRequest(msg));
                log(ViewPanel.getInstance().getUserNickname(), msg);
                msgTextArea.setText("");
            } catch (ClassNotFoundException e) {
                JOptionPane.showMessageDialog(Smart.getInstance(),
                    "系统找不到类库“org.apache.xerces.parsers.SAXParser”！",
                    StringShop.HINT_TITLE, JOptionPane.INFORMATION_MESSAGE);
            } catch (MalformedURLException e) {
                e.printStackTrace();
            } catch (XmlRpcException e) {
                e.printStackTrace();
            } catch (IOException e) {
                JOptionPane.showMessageDialog(Smart.getInstance(),
                    "好友不在线，消息发送失败！", StringShop.HINT_TITLE,
                    JOptionPane.INFORMATION_MESSAGE);
            }
        }
    }
    /**
     * 接收消息
     *
     * @param msg 待接收的消息
     */
    public void receive(String msg) {
        log(user.getBasicInfo().getNickname(), msg);
    }
    /*------------------------------------------------------------------------*
     *                                私有方法                                *
     *------------------------------------------------------------------------*/
    /**
     * 生成请求URL
     *
     * @return 生成的请求URL
     */
    private String genURL() {
        StringBuffer url = new StringBuffer();
        url.append("http://");
        String friendID = user.getBasicInfo().getID();
        url.append(FriendsInfo.getFriendIP(friendID));
        url.append(":");
        int delta = Integer.parseInt(friendID);
        url.append(XMLConfig.getChatPort() + delta);
        url.append("/");
        return url.toString();
    }
    /**
     * 生成XML-RPC请求消息
     *
     * @param msg 待发送的消息
     * @return 生成的XML-RPC请求消息
     */
    private XmlRpcRequest genRequest(String msg) {
        //请求方法
        StringBuffer method = new StringBuffer();
        method.append(XMLConfig.getChatClass());
        method.append(".");
        method.append(XMLConfig.getChatMethod());
        //请求参数
        Vector params = new Vector();
        XMLOutputter outputter = new XMLOutputter();
        params.addElement(outputter.outputString(genDocument(msg)));
        return new XmlRpcRequest(method.toString(), params);
    }
    /**
     * 生成XML文档
     *
     * @param msg 待发送的消息
     * @return 生成的XML文档
     */
    private Document genDocument(String msg) {
        Element request = new Element("Chat");
        Element level1 = new Element("Sender");
        level1.setAttribute("id", ViewPanel.getInstance().getUserID());
        level1.setAttribute("msg", msg);
        request.addContent(level1);
        return new Document(request);
    }
    /**
     * 创建聊天场景根面板
     *
     * @return 创建的聊天场景根面板
     */
    private RootWindow createRootWindow() {
        View view = new View(null, null, null);
        ViewMap viewMap = new ViewMap();
        viewMap.addView(0, view);
        RootWindow root = DockingUtil.createRootWindow(viewMap, false);
        view.close();
        viewMap.removeView(0);
        return root;
    }
    /**
     * 设置聊天场景根面板
     *
     * @param root 待设置的聊天场景根面板
     */
    private void setRootWindow(RootWindow root) {
        DockingWindowsTheme theme = new GradientDockingTheme();
        RootWindowProperties rwp = new RootWindowProperties();
        rwp.addSuperObject(theme.getRootWindowProperties());
        TabWindowProperties twp = rwp.getTabWindowProperties();
        twp.getRestoreButtonProperties().setToolTipText("还原");
        twp.getMaximizeButtonProperties().setToolTipText("最大化");
        twp.getTabProperties().getTitledTabProperties()
            .getNormalProperties().setToolTipText(null);
        root.getRootWindowProperties().addSuperObject(rwp);
    }
    /**
     * 日志
     *
     * @param nickname 昵称
     * @param msg 消息
     */
    private void log(String nickname, String msg) {
        logTextArea.append(PopToolkit.getLongTime());
        logTextArea.append("  ");
        logTextArea.append(nickname);
        logTextArea.append("\n");
        logTextArea.append(msg);
        logTextArea.append("\n");
    }
    /*------------------------------------------------------------------------*
     *                                 内部类                                 *
     *------------------------------------------------------------------------*/
    /**
     * 工具栏面板
     */
    class Toolbar extends JPanel implements ActionListener {
        /**
         * Create a new instance of this class
         */
        public Toolbar() {
            super(new GridBagLayout());
            setOpaque(false);
            //颜色
            JButton button = new JButton("颜色", ImageShop.COLOR_IMAGEICON);
            button.setFocusable(false);
            button.addActionListener(this);
            button.addMouseListener(new SBChanger("改变字体颜色", false));
            GridBagConstraints constraints = new GridBagConstraints(
                //gridx, gridy
                0, 0,
                //gridwidth, gridheight
                1, 1,
                //weightx, weighty
                0.0, 0.0,
                //anchor
                GridBagConstraints.WEST,
                //fill
                GridBagConstraints.NONE,
                //insets
                new Insets(4, 0, 0, 0),
                //ipadx, ipady
                0, 0);
            add(button, constraints);
            //字体
            button = new JButton("字体", ImageShop.FONT_IMAGEICON);
            button.setFocusable(false);
            button.addActionListener(this);
            button.addMouseListener(new SBChanger("改变字体", false));
            constraints.gridx = 1;
            constraints.insets = new Insets(4, 4, 0, 0);
            add(button, constraints);
            //日期
            button = new JButton("日期", ImageShop.DATE_IMAGEICON);
            button.setFocusable(false);
            button.addActionListener(this);
            button.addMouseListener(new SBChanger("插入日期", false));
            constraints.insets = new Insets(4, 4, 0, 0);
            constraints.gridx = 2;
            add(button, constraints);
            //发送
            button = new JButton("发送", ImageShop.SEND_IMAGEICON);
            button.setFocusable(false);
            button.addActionListener(this);
            button.addMouseListener(new SBChanger("发送消息", false));
            constraints.insets = new Insets(4, 4, 0, 7);
            constraints.gridx = 3;
            add(button, constraints);
        }
        /**
         * 实现接口ActionListener的方法
         *
         * @param event the event that characterizes the action
         */
        public void actionPerformed(ActionEvent event) {
            String command = event.getActionCommand();
            if (command.equals("颜色") == true) {
                Color color = JColorChooser.showDialog(Smart.getInstance(),
                    "选择字体颜色", msgTextArea.getForeground());
                msgTextArea.setForeground(color);
            } else if (command.equals("字体") == true) {
                new SelectFontDialog(msgTextArea.getFont());
                msgTextArea.setFont(SelectFontDialog.getSelectedFont());
            } else if (command.equals("日期") == true) {
                msgTextArea.append(PopToolkit.getCurrentDate());
            } else {
                send();
            }
        }
    }
    /**
     * 自定义标签
     */
    class LabelPlus extends JLabel {
        /**
         * 标记鼠标是否进入到标签的边界内
         */
        private boolean mouseEntered;
        /**
         * Create a new instance of this class
         *
         * @param text 标签上显示的文本
         */
        public LabelPlus(String text) {
            super(text);
            mouseEntered = false;
            addMouseListener(new MouseAdapter() {
                public void mouseEntered(MouseEvent event) {
                    mouseEntered = true;
                    setForeground(ColorShop.HYPERLINK1_COLOR);
                    Smart.getInstance().setCursor(
                        Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
                }
                public void mouseExited(MouseEvent event) {
                    mouseEntered = false;
                    setForeground(ColorShop.HYPERLINK2_COLOR);
                    Smart.getInstance().setCursor(Cursor.getDefaultCursor());
                }
                public void mouseClicked(MouseEvent event) {
                    new ViewFriendDialog(user);
                }
            });
        }
        /**
         * 覆盖超类JLabel的方法
         *
         * @param g the specified Graphics context
         */
        public void paint(Graphics g) {
            super.paint(g);
            if (mouseEntered == true) {
                FontMetrics metrics = g.getFontMetrics();
                int width = metrics.stringWidth(getText()) - 3;
                int height = metrics.getHeight() - 1;
                g.drawLine(0, height, width, height);
            }
        }
    }
}