一个简单的文本编辑器

package UserJFrame;
 
import java.awt.BorderLayout;
import java.awt.Button;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.FileDialog;
import java.awt.Font;
import java.awt.GraphicsEnvironment;
import java.awt.GridLayout;
import java.awt.Label;
import java.awt.MenuBar;
import java.awt.Panel;
import java.awt.TrayIcon.MessageType;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.font.TextLayout;
 
import javax.swing.ButtonGroup;
import javax.swing.GroupLayout;
import javax.swing.GroupLayout.Group;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JDialog;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPopupMenu;
import javax.swing.JRadioButton;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.JToolBar;
import javax.swing.LayoutStyle;
import javax.swing.filechooser.FileNameExtensionFilter;
import javax.swing.plaf.basic.BasicBorders.RadioButtonBorder;
import javax.swing.text.StyledEditorKit.BoldAction;
 
public class UserJFrame extends JFrame implements ActionListener, MouseListener {
    private JButton btnAdd;
    private JTextArea textarea;
    private JRadioButton btnMan,btnFelman;
    private JTextField tfdNumber,tfdName;
    private JComboBox comProvince,comCitys;
    private int number=1;
    private Object[][] citys;
    private JTextField tfd1;
    private JMenuItem jmenuItemcolor[]=null;
    private JDialog jdialog1,jdialogsave;
    private Font font1;
    private JPopupMenu jpopupmenu;
    private JPanel jpanel1,jpanel2;
    private JComboBox combofonename,combofonesize;
    private JCheckBox checkBold,checkItalic;
    private JRadioButton radioColor[];
    private Font font;
    public UserJFrame(Object[] province, Object[][] citys) {
        super("个人信息统计");
        this.citys=citys;
        this.setBounds(200, 200, 650, 400);
        this.getContentPane().setBackground(Color.lightGray);
        this.getContentPane().setLayout(new BorderLayout());
        this.setDefaultCloseOperation(EXIT_ON_CLOSE);
        //设置菜单栏
        addMymenu();//调用下面声明的菜单栏相关代码
        jpanel1=new JPanel();//用来存放工具栏的面板
        jpanel2=new JPanel();//用来搞下面的文本区和信息添加区的面板
        JToolBar jtoolbar=new JToolBar();//给工具栏开空间
        //以下为工具栏的内容，包括字体大小设置，字体设置，字形选择框
        //获取系统字体
        GraphicsEnvironment ge=GraphicsEnvironment.getLocalGraphicsEnvironment();
        String fonesName[]=ge.getAvailableFontFamilyNames();
        combofonename=new JComboBox(fonesName);
        combofonename.addActionListener(this);//添加字体的监听
        jtoolbar.add(combofonename);
        //字体大小设置
        String fonesSize[]={"20","30","40","50","60","70"};
        combofonesize=new JComboBox(fonesSize);
        combofonesize.addActionListener(this);
        jtoolbar.add(combofonesize);
        combofonesize.setEditable(true);
        //字体选择
        checkBold=new JCheckBox("粗体");
        checkItalic=new JCheckBox("斜体");
        jtoolbar.add(checkBold);
        jtoolbar.add(checkItalic);
        //颜色选择
        String colorStr[]={"红","绿","蓝","黑"};
        radioColor=new JRadioButton[colorStr.length];
        ButtonGroup group=new ButtonGroup();
        for(int i=0;i<colorStr.length;i++){
            radioColor[i]=new JRadioButton(colorStr[i]);
            jtoolbar.add(radioColor[i]);
            group.add(radioColor[i]);
            radioColor[i].addActionListener(this);
        }
        jpanel1.add(jtoolbar);//工具栏加到jpanel1中
        this.getContentPane().add(jpanel1, BorderLayout.NORTH);//设定jpanel1的位置并添加到整个面板中
        this.getContentPane().add(jpanel2);//jpanel2添加进去
        jpanel2.setLayout(new GridLayout(1, 2));//把界面1分2，左边为文本框眼，右边为信息添加部分栏
        textarea=new JTextArea();
        //textarea.setEditable(false);   //如果有这条代码，则文本框不可编辑
        jpanel2.add(new JScrollPane(textarea));
        JPanel jpanel=new JPanel(new GridLayout(7, 1));
        jpanel2.add(jpanel);
        //把各种元素加进右边面板
        tfdNumber=new JTextField("1");
        tfdNumber.setEditable(false);
        jpanel.add(tfdNumber);
        
        tfdName=new JTextField("姓名：");
        jpanel.add(tfdName);
        
        JPanel jpanelrd=new JPanel(new GridLayout(1,2));
        btnMan=new JRadioButton("男",true);
        btnFelman=new JRadioButton("女");
        jpanelrd.add(btnMan);
        jpanelrd.add(btnFelman);
        jpanel.add(jpanelrd);
        ButtonGroup btngroup=new ButtonGroup();// 使其中的按键（男，女）互斥，只能选择一个,所以把他们放在同一个按键组里
        btngroup.add(btnMan);
        btngroup.add(btnFelman);
        //省份组合框
        comProvince=new JComboBox(province);
        comProvince.addActionListener(this);
        jpanel.add(comProvince);
        
        comCitys=new JComboBox(citys[0]);
        jpanel.add(comCitys);
        
        tfd1=new JTextField("备注:");
        jpanel.add(tfd1);
            
        btnAdd=new JButton("添加");
        btnAdd.addActionListener(this);
        jpanel.add(btnAdd);
        //添加鼠标右键快捷菜单
        jpopupmenu=new JPopupMenu();
        String popumenuItem[]={"粘贴","复制","剪切"};
        JMenuItem popumenuItemadd[]=new JMenuItem[popumenuItem.length];
        for(int i=0;i<popumenuItem.length;i++){
            popumenuItemadd[i]=new JMenuItem(popumenuItem[i]);
            jpopupmenu.add(popumenuItemadd[i]);
            popumenuItemadd[i].addActionListener(this);
        }
        textarea.add(jpopupmenu);
        textarea.addMouseListener(this);
        this.setVisible(true);
    }
    private void addMymenu() {
        JMenuBar jmenubar=new JMenuBar();
        setJMenuBar(jmenubar);
        String menustr[]={"文件","编辑","帮助"};
        JMenu menu[]=new JMenu[menustr.length];
        for(int i=0;i<menustr.length;i++){
            menu[i]=new JMenu(menustr[i]);
            jmenubar.add(menu[i]);
        }
        //"文件"菜单的子菜单
        JMenuItem open=new JMenuItem("打开");
        open.setActionCommand("open");
        open.addActionListener(this);
        menu[0].add(open);
        JMenuItem save=new JMenuItem("保存");
        menu[0].add(save);
        
        menu[0].addSeparator();
        
        JMenuItem past=new JMenuItem("粘贴");
        past.addActionListener(this);
        menu[0].add(past);
        
        JMenuItem copy=new JMenuItem("复制");
        copy.addActionListener(this);
        menu[0].add(copy);
        
        JMenuItem cut=new JMenuItem("剪切");
        cut.addActionListener(this);
        menu[0].add(cut);
        
        menu[0].addSeparator();
        
        JMenuItem exit=new JMenuItem("退出");
        exit.setActionCommand("exit");
        exit.addActionListener(this);
        menu[0].add(exit);
        //"编辑 "菜单的子菜单
        JMenu wordstyle=new JMenu("字形");
        menu[1].add(wordstyle);
        JMenu colorstyle=new JMenu("颜色设置");
        menu[1].add(colorstyle);
        //设置“字形的二级菜单”
        String wordstyle1[]={"粗体","斜体"};
        JMenuItem jmenuitem[]=new JMenuItem[wordstyle1.length];
        for(int i=0;i<wordstyle1.length;i++){
            jmenuitem[i]=new JMenuItem(wordstyle1[i]);
            wordstyle.add(jmenuitem[i]);
            jmenuitem[i].addActionListener(this);
        }
        //设置“颜色设置”二级菜单
        String colorstyle1[]={"红","绿","蓝","黑"};
        jmenuItemcolor=new JMenuItem[colorstyle1.length];
        for(int i=0;i<colorstyle1.length;i++){
            jmenuItemcolor[i]=new JMenuItem(colorstyle1[i]);
            colorstyle.add(jmenuItemcolor[i]);
            jmenuItemcolor[i].addActionListener(this);
        }
        
        JMenuItem jmenuitemhelp=new JMenuItem("相关帮助咨询");
        jmenuitemhelp.addActionListener(this);
        menu[2].add(jmenuitemhelp);
 
    }
    
@Override
    public void actionPerformed(ActionEvent e) {
        if(e.getSource()==btnAdd){
            String aline;
            //添加名字和编号
            aline=this.number+","+tfdName.getText();
            //添加性别
            if(btnMan.isSelected()){
                aline=aline+","+btnMan.getText();
            }
            if(btnFelman.isSelected()){
                aline=aline+","+btnFelman.getText();
            }
            //添加省份
            aline=aline+","+comProvince.getSelectedItem();
            
            //添加市级
            aline=aline+","+comCitys.getSelectedItem();
            //添加备注
            aline=aline+","+tfd1.getText();
            tfd1.setText("备注:");
            
            textarea.append(aline+"\n");
            this.number++;
            tfdNumber.setText(""+this.number);
            tfdName.setText("姓名:");
            
        }
        
        else if(e.getSource()==comProvince){
            int i=comProvince.getSelectedIndex();
            comCitys.removeAllItems();
            System.out.println(citys[i].length);
            for(int j=0;j<citys[i].length;j++){
                comCitys.addItem(citys[i][j]);
            }
        }
        else if(e.getSource() instanceof JMenuItem||e.getSource() instanceof JRadioButton){
            //设置颜色的监听
            Color color=null;  //用传参的思维做颜色
            if(e.getActionCommand().equals("红")){
                color=new Color(255,0,0);
            }
            if(e.getActionCommand().equals("绿")){
                color=new Color(0,255,0);
            }
            if(e.getActionCommand().equals("蓝")){
                color=new Color(0,0,255);
            }
            if(e.getActionCommand().equals("黑")){
                color=new Color(0,0,0);
            }
            textarea.setForeground(color);
            //设置帮助的监听
            if(e.getActionCommand().equalsIgnoreCase("相关帮助咨询")){
                jdialog1=new JDialog(this,true);
                jdialog1.setSize(330, 100);
                int lx=getX()+20;
                int ly=getY()+20;
                jdialog1.setLocation(lx, ly);
                jdialog1.add(new Label("相关帮助请咨询电话10010，最终解释权归联通公司所有！"));
                jdialog1.setVisible(true);
            }
            //设置字形的监听
            if(e.getActionCommand().equals("粗体")){
                font1=new Font(getName(),20, 20);
                textarea.setFont(font1);
            }
            if(e.getActionCommand().equals("斜体")){
                
            }
            //退出的监听
            if(e.getActionCommand().equalsIgnoreCase("exit")){
                int option=JOptionPane.showConfirmDialog(this, "你确定保存并退出么？");
                if(option==JOptionPane.OK_OPTION){
                    System.out.println("保存中...");
                    System.exit(0);
                }
                if(option==JOptionPane.NO_OPTION){
                    System.exit(0);
                }
                if(option==JOptionPane.CANCEL_OPTION){
                    return;
                }
                
            }
            //保存的监听
            if(e.getActionCommand().equalsIgnoreCase("复制")){
                textarea.copy();
            }
            //粘贴监听
            if(e.getActionCommand().equalsIgnoreCase("粘贴")){
                textarea.paste();
            }
            //剪切监听
            if(e.getActionCommand().equalsIgnoreCase("剪切")){
                textarea.cut();
            }
            //打开的监听
            if(e.getActionCommand().equals("open")){
                openFile();
            }
        
        }    //字形的监听
        /*if(e.getSource() instanceof JComboBox ){
                String fontName=(String) combofonename.getSelectedItem();
                int fontSize=0;
                String strSize=(String) combofonesize.getSelectedItem();
                int style = changeStyle(e);
                font=new Font(fontName, style, fontSize);
                textarea.setFont(font);
        }
    }
    private int changeStyle(ActionEvent e) {
    // TODO Auto-generated method stub
    return 0;*/
    }
    private void openFile() {
        FileDialog openFileDlg = new FileDialog(this, "打开文件", FileDialog.LOAD);
        openFileDlg.setVisible(true);
}
    
    @Override
    public void mouseClicked(MouseEvent e) {
        if(e.getModifiers()==MouseEvent.BUTTON3_MASK){
            jpopupmenu.show(textarea,e.getX(), e.getY());
        }
    }
    public void mousePressed(MouseEvent e) {
    }
    public void mouseReleased(MouseEvent e) {
    }
    public void mouseEntered(MouseEvent e) {
    }
    public void mouseExited(MouseEvent e) {
    }
    public static void main(String[] args) {
        Object province[]={"四川省","湖南省","江苏省"};
        Object citys[][]={{"成都市","遂宁市","南充市","德阳市","绵阳市"},
                          {"益阳市","长沙市","株洲市","湘潭市","岳阳市"},
                          {"南京市","苏州市","无锡市"}
        };
        new UserJFrame(province,citys);
    }
}