writingmailpanel.java

该系统是一个基于p2p的即时聊天系统

/*
 * @(#) WritingMailPanel.java
 * Copyright 2004 HWStudio. All rights reserved.
 */
package hws.item.smart.panel.function.mail;
//导入核心Java类库
import java.awt.Cursor;
import java.awt.Insets;
import java.awt.Graphics;
import java.awt.FontMetrics;
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.JLabel;
import javax.swing.JPanel;
import javax.swing.JButton;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.JScrollPane;
//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.action.mail.writing.SaveMailAction;
import hws.item.smart.action.mail.writing.SendMailAction;
import hws.item.smart.action.mail.writing.DraftMailAction;
import hws.item.smart.action.mail.writing.PrintMailAction;
import hws.item.smart.action.mail.writing.AttachmentAction;
/**
 * 写邮件面板
 *
 * @version 0.1 2005-08-07
 * @author Hwerz
 */
public class WritingMailPanel extends JPanel {
    /*------------------------------------------------------------------------*
     *                                属性定义                                *
     *------------------------------------------------------------------------*/
    /**
     * 该类自身的一个静态引用
     */
    private static WritingMailPanel panel;
    /**
     * 邮件头面板
     */
    private MailHeaderPanel header;
    /**
     * 邮件体面板
     */
    private MailBodyPanel body;
    /*------------------------------------------------------------------------*
     *                                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 WritingMailPanel() {
        super(new GridBagLayout());
        //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.NORTHEAST,
            //fill
            GridBagConstraints.HORIZONTAL,
            //insets
            new Insets(5, 0, 0, 0),
            //ipadx, ipady
            0, 0);
        add(new Toolbar(), constraints);
        //邮件头面板
        header = new MailHeaderPanel();
        constraints.gridy = 1;
        constraints.insets = new Insets(0, 0, 0, 0);
        add(header, constraints);
        //邮件体面板
        body = new MailBodyPanel();
        constraints.gridy = 2;
        constraints.weighty = 1.0;
        constraints.fill = GridBagConstraints.BOTH;
        add(body, 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 WritingMailPanel getInstance() {
        if (panel == null) {
            panel = new WritingMailPanel();
        }
        return panel;
    }
    /*------------------------------------------------------------------------*
     *                                 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));
            //发送
            JButton button = new JButton(SendMailAction.getInstance());
            button.setIcon(ImageShop.SEND_IMAGEICON);
            button.addMouseListener(new SBChanger(
                SendMailAction.getInstance().getHintInfo(), false));
            add(button);
            //保存
            button = new JButton(SaveMailAction.getInstance());
            button.setIcon(ImageShop.SAVE_IMAGEICON);
            button.addMouseListener(new SBChanger(
                SaveMailAction.getInstance().getHintInfo(), false));
            add(button);
            //草稿
            button = new JButton(DraftMailAction.getInstance());
            button.setIcon(ImageShop.DRAFT_IMAGEICON);
            button.addMouseListener(new SBChanger(
                DraftMailAction.getInstance().getHintInfo(), false));
            add(button);
            //打印
            button = new JButton(PrintMailAction.getInstance());
            button.setIcon(ImageShop.PRINT_IMAGEICON);
            button.addMouseListener(new SBChanger(
                PrintMailAction.getInstance().getHintInfo(), false));
            add(button);
            //附件
            button = new JButton(AttachmentAction.getInstance());
            button.setIcon(ImageShop.ATTACHMENT_IMAGEICON);
            button.addMouseListener(new SBChanger(
                AttachmentAction.getInstance().getHintInfo(), false));
            add(button);
        }
    }
    /**
     * 邮件头面板
     */
    class MailHeaderPanel extends JPanel {
        /**
         * 发件人文本框
         */
        private JTextField fromTextField;
        /**
         * 回复文本框
         */
        private JTextField replyTextField;
        /**
         * 收件人文本框
         */
        private JTextField toTextField;
        /**
         * 抄送文本框
         */
        private JTextField copyTextField;
        /**
         * 暗送文本框
         */
        private JTextField hideTextField;
        /**
         * 主题文本框
         */
        private JTextField subjectTextField;
        /**
         * Create a new instance of this class
         */
        public MailHeaderPanel() {
            super(new GridBagLayout());
            //发件人标签
            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(5, 10, 0, 0),
                //ipadx, ipady
                0, 0);
            add(new JLabel("发件人："), constraints);
            //发件人文本框
            fromTextField = new JTextField();
            constraints.gridx = 1;
            constraints.gridwidth = GridBagConstraints.REMAINDER;
            constraints.weightx = 1.0;
            constraints.fill = GridBagConstraints.HORIZONTAL;
            constraints.insets = new Insets(5, 0, 0, 10);
            add(fromTextField, constraints);
            //回复标签
            constraints.gridx = 0;
            constraints.gridy = 1;
            constraints.gridwidth = 1;
            constraints.weightx = 0.0;
            constraints.fill = GridBagConstraints.NONE;
            constraints.insets = new Insets(5, 10, 0, 0);
            add(new JLabel("回复："), constraints);
            //回复文本框
            replyTextField = new JTextField();
            constraints.gridx = 1;
            constraints.gridwidth = GridBagConstraints.REMAINDER;
            constraints.weightx = 1.0;
            constraints.fill = GridBagConstraints.HORIZONTAL;
            constraints.insets = new Insets(5, 0, 0, 10);
            add(replyTextField, constraints);
            //收件人标签
            constraints.gridx = 0;
            constraints.gridy = 2;
            constraints.gridwidth = 1;
            constraints.weightx = 0.0;
            constraints.fill = GridBagConstraints.NONE;
            constraints.insets = new Insets(5, 10, 0, 0);
            add(new LabelPlus("收件人："), constraints);
            //收件人文本框
            toTextField = new JTextField();
            constraints.gridx = 1;
            constraints.gridwidth = GridBagConstraints.REMAINDER;
            constraints.weightx = 1.0;
            constraints.fill = GridBagConstraints.HORIZONTAL;
            constraints.insets = new Insets(5, 0, 0, 10);
            add(toTextField, constraints);
            //抄送标签
            constraints.gridx = 0;
            constraints.gridy = 3;
            constraints.gridwidth = 1;
            constraints.weightx = 0.0;
            constraints.fill = GridBagConstraints.NONE;
            constraints.insets = new Insets(5, 10, 0, 0);
            add(new LabelPlus("抄送："), constraints);
            //抄送文本框
            copyTextField = new JTextField();
            constraints.gridx = 1;
            constraints.gridwidth = GridBagConstraints.REMAINDER;
            constraints.weightx = 1.0;
            constraints.fill = GridBagConstraints.HORIZONTAL;
            constraints.insets = new Insets(5, 0, 0, 10);
            add(copyTextField, constraints);
            //暗送标签
            constraints.gridx = 0;
            constraints.gridy = 4;
            constraints.gridwidth = 1;
            constraints.weightx = 0.0;
            constraints.fill = GridBagConstraints.NONE;
            constraints.insets = new Insets(5, 10, 0, 0);
            add(new LabelPlus("暗送："), constraints);
            //暗送文本框
            hideTextField = new JTextField();
            constraints.gridx = 1;
            constraints.gridwidth = GridBagConstraints.REMAINDER;
            constraints.weightx = 1.0;
            constraints.fill = GridBagConstraints.HORIZONTAL;
            constraints.insets = new Insets(5, 0, 0, 10);
            add(hideTextField, constraints);
            //主题标签
            constraints.gridx = 0;
            constraints.gridy = 5;
            constraints.gridwidth = 1;
            constraints.weightx = 0.0;
            constraints.fill = GridBagConstraints.NONE;
            constraints.insets = new Insets(5, 10, 0, 0);
            add(new JLabel("主题："), constraints);
            //主题文本框
            subjectTextField = new JTextField();
            constraints.gridx = 1;
            constraints.gridwidth = GridBagConstraints.REMAINDER;
            constraints.weightx = 1.0;
            constraints.fill = GridBagConstraints.HORIZONTAL;
            constraints.insets = new Insets(5, 0, 0, 10);
            add(subjectTextField, constraints);
        }
        /**
         * 返回发件人地址
         *
         * @return 发件人地址
         */
        public String getFrom() {
            return fromTextField.getText().trim();
        }
        /**
         * 返回回复地址
         *
         * @return 回复地址
         */
        public String getReply() {
            return replyTextField.getText().trim();
        }
        /**
         * 返回收件人地址
         *
         * @return 收件人地址
         */
        public String getTo() {
            return toTextField.getText().trim();
        }
        /**
         * 返回抄送地址
         *
         * @return 抄送地址
         */
        public String getCopy() {
            return copyTextField.getText().trim();
        }
        /**
         * 返回暗送地址
         *
         * @return 暗送地址
         */
        public String getHide() {
            return hideTextField.getText().trim();
        }
        /**
         * 返回邮件主题
         *
         * @return 邮件主题
         */
        public String getSubject() {
            return subjectTextField.getText().trim();
        }
    }
    /**
     * 邮件体面板
     */
    class MailBodyPanel extends JPanel {
        /**
         * 邮件内容文本域
         */
        private JTextArea bodyTextArea;
        /**
         * Create a new instance of this class
         */
        public MailBodyPanel() {
            super(new GridBagLayout());
            bodyTextArea = new JTextArea();
            JScrollPane scroller = new JScrollPane(bodyTextArea,
                JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
                JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
            GridBagConstraints constraints = new GridBagConstraints(
                //gridx, gridy
                0, 0,
                //gridwidth, gridheight
                1, 1,
                //weightx, weighty
                1.0, 1.0,
                //anchor
                GridBagConstraints.NORTHWEST,
                //fill
                GridBagConstraints.BOTH,
                //insets
                new Insets(10, 10, 5, 10),
                //ipadx, ipady
                0, 0);
            add(scroller, constraints);
        }
        /**
         * 返回邮件内容
         *
         * @return 邮件内容
         */
        public String getBody() {
            return bodyTextArea.getText().trim();
        }
    }
    /**
     * 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) {
                    //...
                }
            });
        }
        /**
         * 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()) - 5;
                int height = metrics.getHeight() - 1;
                g.drawLine(0, height, width, height);
            }
        }
    }
}