text
作者：互联网
MainFrame
package p1;//0:刚启动1:新建 2: 修改过3:保存过
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Event;
import java.awt.EventQueue;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.GridLayout;
import java.awt.PrintJob;
import java.awt.datatransfer.Clipboard;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.StringSelection;
import java.awt.datatransfer.Transferable;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.InputEvent;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.print.PageFormat;
import java.awt.print.PrinterJob;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.security.PrivateKey;
import java.sql.Savepoint;
import java.util.Calendar;
import java.util.GregorianCalendar;
import javax.naming.spi.DirStateFactory.Result;
import javax.swing.BorderFactory;
import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JCheckBoxMenuItem;
import javax.swing.JColorChooser;
import javax.swing.JDialog;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
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.JSeparator;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.JToolBar;
import javax.swing.KeyStroke;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.border.EmptyBorder;
import javax.swing.colorchooser.ColorChooserComponentFactory;
import javax.swing.event.CaretEvent;
import javax.swing.event.CaretListener;
import javax.swing.text.DefaultEditorKit.CopyAction;
import javax.swing.undo.UndoManager;
import org.omg.CORBA.PRIVATE_MEMBER;
import org.omg.CORBA.PUBLIC_MEMBER;
public class MainFrame extends JFrame implements ActionListener{
private static final long serialVersionUID = 7390199394170L;
private JPanel contentPane;
private JTextArea textArea;
private JMenuItem iO;//打开
private JMenuItem iSave;//保存
private JMenuItem iSA;//另存为
private JMenuItem iN;//新建
private JMenuItem iPe;//页面设置
private JMenuItem iPt;//打印
private JMenuItem iExit;//退出
private JMenuItem iSFH;//查看帮助
private JMenuItem iAN;//关于记事本
private JMenuItem iU;//撤销
private JMenuItem iCut;//剪切
private JMenuItem iCopy;//复制
private JMenuItem iPte;//粘贴
private JMenuItem iD;//删除
private JMenuItem iFnd;//查找
private JMenuItem iFN;//查找下一个
private JMenuItem iR;//替换
private JMenuItem iT;//跳转
private JMenuItem iSAll;//全选
private JMenuItem iTime;//时间
private JMenuItem iFont;//字体大小
private JMenuItem iColor;//背景颜色
private JMenuItem iFC;//字体颜色
private JCheckBoxMenuItem iNL;// 自动换行
private JCheckBoxMenuItem iS;//设置状态
private JScrollPane scrollPane;
private JToolBar tS;//字数统计
private JLabel l2;
private JLabel l3;
private JMenu iEdit;//编辑
private JMenu iF;//格式
private JMenu iC;//查看
private JMenu iH;//帮助
private JSeparator separator;
public static JLabel l1;
public UndoManager undoMgr = new UndoManager();//撤销管理器
public Clipboard clipboard = new Clipboard("剪切");//剪切板
int flag = 0;
int length =0;
int sum = 0;
int linenum = 1;//文本行数
int columnnum = 1;//文本列数
String currentFileName = null;//文件名
String currentPath = null;//路径
PrintJob p = null;//声明一个要打印对象
Graphics g = null;//要打印的对象
JColorChooser jcc1 = null;//背景颜色
Color color = Color.BLACK;
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable(){
public void run() {
try {
MainFrame frame = new MainFrame();
frame.setVisible(true);
}catch (Exception e) {
e.printStackTrace();
}
}
});
}
GregorianCalendar c = new GregorianCalendar();
int hour = c.get(Calendar.HOUR_OF_DAY);
int min = c.get(Calendar.MINUTE);
int second = c.get(Calendar.SECOND);
private JPopupMenu popupMenu;
private JMenuItem popM_Undo;//撤销
private JMenuItem popM_Cut;//剪切
private JMenuItem popM_Copy;//复制
private JMenuItem popM_Paste;//粘贴
private JMenuItem popM_Delete;//删除
private JMenuItem popM_SelectAll;//全选
private JMenuItem popM_toLeft;//从左向右阅读
private JMenuItem popM_showUnicode;//显示Unicode控制字符
private JMenuItem popM_closeMe;//关闭
private JMenuItem popM_InsertUnicode;//插入Unicode控制字符
private JMenuItem popM_RestartSelect;//汉字重选
private JMenuItem popM_Redo;
private JSeparator separator_1;
private JSeparator separator_2;
private JSeparator separator_3;
private JSeparator separator_4;
private JSeparator separator_5;
private JSeparator separator_6;
private JSeparator separator_7;
private JSeparator separator_8;
private JMenuItem iRedo;
public MainFrame() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException e1) {
e1.printStackTrace();
} catch (InstantiationException e1) {
e1.printStackTrace();
} catch (IllegalAccessException e1) {
e1.printStackTrace();
} catch (UnsupportedLookAndFeelException e1) {
e1.printStackTrace();
}
setTitle("护眼记事本 V2019 1.0版");
setDefaultCloseOperation(DO_NOTHING_ON_CLOSE);
setBounds(100, 100, 700, 572);
JMenuBar menuBar = new JMenuBar();
setJMenuBar(menuBar);
JMenu iFile = new JMenu("文件(F)");
iFile.setMnemonic('F');
menuBar.add(iFile);
iN = new JMenuItem("新建(N)",'N');
iN.setAccelerator(KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_N,
java.awt.Event.CTRL_MASK));
iN.addActionListener(this);
iFile.add(iN);
iO = new JMenuItem("打开(O)",'O');
iO.setAccelerator(KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_O,
java.awt.Event.CTRL_MASK));
iO.addActionListener(this);
iFile.add(iO);
iSave = new JMenuItem("保存(S)");
iSave.setAccelerator(KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_S,
java.awt.Event.CTRL_MASK));
iSave.addActionListener(this);
iFile.add(iSave);
iSA = new JMenuItem("另存为(A)");
iSA.addActionListener(this);
iFile.add(iSA);
separator = new JSeparator();
iFile.add(separator);
iPe = new JMenuItem("页面设置(U)",'U');
iPe.addActionListener(this);
iFile.add(iPe);
iPt = new JMenuItem("打印(P)",'P');
iPt.setAccelerator(KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_P,
java.awt.Event.CTRL_MASK));
iPt.addActionListener(this);
iFile.add(iPt);
separator_1=new JSeparator();
iFile.add(separator_1);
iExit = new JMenuItem("退出(X)",'X');
iExit.addActionListener(this);
iFile.add(iExit);
iEdit = new JMenu("编辑(E)");
iEdit.setMnemonic('E');
menuBar.add(iEdit);
iU = new JMenuItem("撤销(U)",'U');
iU.setAccelerator(KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_Z,
java.awt.Event.CTRL_MASK));
iU.addActionListener(this);
iEdit.add(iU);
iRedo = new JMenuItem("恢复(R)");
iRedo.setAccelerator(KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_R,
java.awt.Event.CTRL_MASK));
iRedo.addActionListener(this);
iEdit.add(iRedo);
iCut = new JMenuItem("剪切(T)",'T');
iCut.setAccelerator(KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_X,
java.awt.Event.CTRL_MASK));
iCut.addActionListener(this);
separator_6 = new JSeparator();
iEdit.add(separator_6);
iEdit.add(iCut);
iCopy = new JMenuItem("复制(C)",'C');
iCopy.addActionListener(this);
iCopy.setAccelerator(KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_C,
java.awt.Event.CTRL_MASK));
iEdit.add(iCopy);
iPte = new JMenuItem("粘贴(P)",'P');
iPte.addActionListener(this);
iPte.setAccelerator(KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_V,
java.awt.Event.CTRL_MASK));
iEdit.add(iPte);
iD = new JMenuItem("删除(L)",'L');
iD.addActionListener(this);
iD.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_D,
InputEvent.CTRL_MASK));
iEdit.add(iD);
separator_7 = new JSeparator();
iEdit.add(separator_7);
iFnd = new JMenuItem("查找(F)",'F');
iFnd.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_F,
Event.CTRL_MASK));
iFnd.addActionListener(this);
iEdit.add(iFnd);
iFN = new JMenuItem("查找下一个(N)",'N');
iFN.setAccelerator(KeyStroke.getKeyStroke("F3"));
iFN.addActionListener(this);
iEdit.add(iFN);
iR = new JMenuItem("替换(R)",'R');
iR.addActionListener(this);
iR.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_H,
Event.CTRL_MASK));
iEdit.add(iR);
iT = new JMenuItem("转到(G)",'G');
iT.addActionListener(this);
iT.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_G,
Event.CTRL_MASK));
iEdit.add(iT);
iSAll = new JMenuItem("全选(A)",'A');
iSAll.setAccelerator(KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_A,
java.awt.Event.CTRL_MASK));
iSAll.addActionListener(this);
separator_8 = new JSeparator();
iEdit.add(separator_8);
iEdit.add(iSAll);
iTime = new JMenuItem("时间/日期(D)",'D');
iTime.addActionListener(this);
iTime.setAccelerator(KeyStroke.getKeyStroke("F5"));
iEdit.add(iTime);
iF = new JMenu("格式(O)");
iF.setMnemonic('O');
menuBar.add(iF);
iNL = new JCheckBoxMenuItem("自动换行(W)");
iNL.addActionListener(this);
iF.add(iNL);
iFont = new JMenuItem("字体大小(F)...");
iFont.addActionListener(this);
iF.add(iFont);
iColor = new JMenuItem("背景颜色(C)...");
iColor.addActionListener(this);
iF.add(iColor);
iFC = new JMenuItem("字体颜色(I)...");
iFC.addActionListener(this);
iF.add(iFC);
iC = new JMenu("查看(V)");
iC.setMnemonic('V');
menuBar.add(iC);
iS = new JCheckBoxMenuItem("状态栏(S)");
iS.addActionListener(this);
iC.add(iS);
iH = new JMenu("帮助(H)");
iH.setMnemonic('H');
menuBar.add(iH);
iSFH = new JMenuItem("查看帮助(H)",'H');
iSFH.addActionListener(this);
iH.add(iSFH);
iAN = new JMenuItem("关于记事本(A)",'A');
iAN.addActionListener(this);
iH.add(iAN);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
//设置边框布局
contentPane.setLayout(new BorderLayout(0, 0));
setContentPane(contentPane);
textArea = new JTextArea();
//VERTICAL垂直 HORIZONTAL水平
scrollPane = new JScrollPane(textArea, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS, JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
//contentPane2=new JPanel();
//contentPane2.setSize(10,textArea.getSize().height);
//contentPane.add(contentPane2, BorderLayout.WEST);
TestLine view = new TestLine();
scrollPane.setRowHeaderView(view);
popupMenu = new JPopupMenu();
addPopup(textArea, popupMenu);
popM_Undo = new JMenuItem("撤销(U)");
popM_Undo.addActionListener(this);
popupMenu.add(popM_Undo);
popM_Redo = new JMenuItem("恢复(R)");
popM_Redo.addActionListener(this);
popupMenu.add(popM_Redo);
separator_2 = new JSeparator();
popupMenu.add(separator_2);
popM_Cut = new JMenuItem("剪切(T)");
popM_Cut.addActionListener(this);
popupMenu.add(popM_Cut);
popM_Copy = new JMenuItem("复制(C)");
popM_Copy.addActionListener(this);
popupMenu.add(popM_Copy);
popM_Paste = new JMenuItem("粘贴(P)");
popM_Paste.addActionListener(this);
popupMenu.add(popM_Paste);
popM_Delete = new JMenuItem("删除(D)");
popM_Delete.addActionListener(this);
popupMenu.add(popM_Delete);
separator_3 = new JSeparator();
popupMenu.add(separator_3);
popM_SelectAll = new JMenuItem("全选(A)");
popM_SelectAll.addActionListener(this);
popupMenu.add(popM_SelectAll);
separator_4 = new JSeparator();
popupMenu.add(separator_4);
popM_toLeft = new JMenuItem("从右到左的阅读顺序(R)");
popM_toLeft.addActionListener(this);
popupMenu.add(popM_toLeft);
popM_showUnicode = new JMenuItem("显示Unicode控制字符(S)");
popM_showUnicode.addActionListener(this);
popupMenu.add(popM_showUnicode);
popM_InsertUnicode = new JMenuItem("插入Unicode控制字符(I)");
popM_InsertUnicode.addActionListener(this);
popupMenu.add(popM_InsertUnicode);
separator_5 = new JSeparator();
popupMenu.add(separator_5);
popM_closeMe = new JMenuItem("关闭IME(L)");
popM_closeMe.addActionListener(this);
popupMenu.add(popM_closeMe);
popM_RestartSelect = new JMenuItem("汉字重选(R)");
popM_RestartSelect.addActionListener(this);
popupMenu.add(popM_RestartSelect);//添加到面板中
contentPane.add(scrollPane, BorderLayout.CENTER);//撤销管理器
textArea.getDocument().addUndoableEditListener(undoMgr);
tS = new JToolBar();
tS.setSize(textArea.getSize().width,10);
l1=new JLabel("当前系统时间："+hour+":"+min+":"+second+" ");
tS.add(l1);
tS.addSeparator();
l2 = new JLabel("第"+linenum+" 行，第 "+columnnum+"列 ");
tS.add(l2);
tS.addSeparator();
l3 = new JLabel(" 一共 "+length+" 字 ");
tS.add(l3);
textArea.addCaretListener(new CaretListener() {//记录行数和列数
public void caretUpdate(CaretEvent e) {
JTextArea editArea = (JTextArea)e.getSource();
try {
int caretpos = editArea.getCaretPosition();
linenum = editArea.getLineOfOffset(caretpos);
columnnum = caretpos - textArea.getLineStartOffset(linenum);
linenum += 1;
l2.setText(" 第 " + linenum + " 行, 第 " + (columnnum+1)+" 列 ");
length=MainFrame.this.textArea.getText().toString().length();
l3.setText(" 一共 " +length+" 字 ");
}
catch(Exception ex) { }
}});
contentPane.add(tS, BorderLayout.SOUTH);
tS.setVisible(true);
tS.setFloatable(true);
Clock clock=new Clock();
clock.start();
final JPopupMenu jPopupMenu =new JPopupMenu();//创建弹出式菜单
textArea.addMouseMotionListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
if(e.getButton()==MouseEvent.BUTTON3)//只响应鼠标右击
{
jPopupMenu.show(e.getComponent(),e.getX(),e.getY());
}
}
});
isChanged();
this.MainFrameWidowListener();
}
private void isChanged() {
textArea.addKeyListener(new KeyAdapter() {
@Override
public void keyTyped(KeyEvent e) {
Character c =e.getKeyChar();
if(c != null && !textArea.getText().toString().contentEquals("")) {
flag = 2;
}
}
});
}
private void MainFrameWidowListener() {
this.addWindowListener(new WindowAdapter(){
@Override
public void windowClosing(WindowEvent e) {
if(flag==2 && currentPath==null){
//这是弹出小窗口
//1、（刚启动记事本为0，刚新建文档为1）条件下修改后
int result=JOptionPane.showConfirmDialog(MainFrame.this, "是否保存更改到十组课设", "记事本", JOptionPane.YES_NO_CANCEL_OPTION, JOptionPane.PLAIN_MESSAGE);
if(result==JOptionPane.OK_OPTION){
MainFrame.this.saveAs();
}else if(result==JOptionPane.NO_OPTION){
MainFrame.this.dispose();
MainFrame.this.setDefaultCloseOperation(EXIT_ON_CLOSE);
}
}else if(flag==2 && currentPath!=null){
//弹出窗口
//1、（刚启动记事本为0，刚新建文档为1）条件下修改后
int result=JOptionPane.showConfirmDialog(MainFrame.this, "是否将更改保存到十组课设"+currentPath+"?", "记事本", JOptionPane.YES_NO_CANCEL_OPTION, JOptionPane.PLAIN_MESSAGE);
if(result==JOptionPane.OK_OPTION){
MainFrame.this.save();
}else if(result==JOptionPane.NO_OPTION){
MainFrame.this.dispose();
MainFrame.this.setDefaultCloseOperation(EXIT_ON_CLOSE);
}
}else{
//弹出窗口
int result=JOptionPane.showConfirmDialog(MainFrame.this, "确定关闭", "系统提示", JOptionPane.YES_NO_OPTION, JOptionPane.PLAIN_MESSAGE);
if(result==JOptionPane.OK_OPTION){
MainFrame.this.dispose();
MainFrame.this.setDefaultCloseOperation(EXIT_ON_CLOSE);
}
}
}
});
}
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
if(e.getSource()==iO){//打开
openFile();
}else if(e.getSource()==iS) {//保存
save();
}else if(e.getSource()==iSA) {//另存为
saveAs();
}else if(e.getSource()==iN) {//新建
newFile();
}else if(e.getSource()==iExit) {//退出
exit();
}else if(e.getSource()==iPe) {//页面设置
PageFormat pFormat = new PageFormat();
PrinterJob.getPrinterJob().pageDialog(pFormat);}
else if(e.getSource()==iPt) {//打印
Print();
}else if(e.getSource()==iU ||e.getSource() == popM_Undo){//撤销
if(undoMgr.canRedo()) {
undoMgr.canRedo();
}
}else if(e.getSource() == iCut || e.getSource() == popM_Cut) {//复制
cut();
}else if(e.getSource()==iPe || e.getSource()==popM_Copy) {//粘贴
paste();
}else if(e.getSource()==iD || e.getSource()==popM_Delete) {//删除
String temString = textArea.getText().toString();
textArea.setText(temString.substring(0,textArea.getSelectionStart()));
}else if(e.getSource()==iFnd) {//查找
mySearch();
}else if(e.getSource()==iFN) {//查找下一个
mySearch();
}else if(e.getSource()==iR) {//替换
mySearch();
}else if(e.getSource()==iSA || e.getSource()==popM_SelectAll) {//全选
textArea.selectAll();
}else if(e.getSource()==iT) {//时间
textArea.append(hour+":"+min+":"+c.get(Calendar.YEAR)+"/"+(c.get(Calendar.MONTH)+1)+"/"+c.get(Calendar.DAY_OF_MONTH));
}else if(e.getSource()==iNL) {//自动换行
if(iNL.isSelected()) {
textArea.setLineWrap(true);
}else {
textArea.setLineWrap(false);
}
}else if(e.getSource()==iFont) {//字体大小
MQFontChooser fontChooser = new MQFontChooser(textArea.getFont());//字体选择器
fontChooser.showFontDialog(this);
Font font = fontChooser.getSelectFont();
textArea.setFont(font);//将字体设置到图形界面
}else if(e.getSource()==iColor) {//背景颜色
jcc1=new JColorChooser();
JOptionPane.showMessageDialog(this, jcc1,"选择背景颜色",-1);
color = jcc1.getColor();
textArea.setBackground(color);
}else if(e.getSource()==iFC) {//字体颜色
color = jcc1.getColor();
JOptionPane.showMessageDialog(this, jcc1,"选择字体颜色",-1);
color = jcc1.getColor();
textArea.setForeground(color);
}else if(e.getSource()==iS) {//状态
if(iS.isSelected()) {
tS.setVisible(true);
}else {
tS.setVisible(false);
}
}else if(e.getSource()==iSFH) {
JOptionPane.showMessageDialog(this, "打开浏览器，百度搜索","帮助",1);
}else if(e.getSource()==iAN) {
JOptionPane.showMessageDialog(this, "记事本 V2019【网络十组制作】","软件说明",1);
}
}
private void turnTo() {
final JDialog gotoDialog = new JDialog(this, "转到下列行");
JLabel gotoLabel= new JLabel("行数(L):");
final JTextField linenum = new JTextField(5);
linenum.setText("1");
linenum.selectAll();
JButton okButton = new JButton("确定");
okButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
int totalLine = textArea.getLineCount();
int[] lineNumber = new int[totalLine + 1];
String s = textArea.getText();
int pos = 0, t = 0;
while (true) {
pos = s.indexOf('\12', pos);
// System.out.println("引索pos:"+pos);
if (pos == -1)
break;
lineNumber[t++] = pos++;
}
int gt = 1;
try {
gt = Integer.parseInt(linenum.getText());
} catch (NumberFormatException efe) {
JOptionPane.showMessageDialog(null, "请输入行数!", "提示", JOptionPane.WARNING_MESSAGE);
linenum.requestFocus(true);
return;
}
if (gt < 2 || gt >= totalLine) {
if (gt < 2)
textArea.setCaretPosition(0);
else
textArea.setCaretPosition(s.length());
} else
textArea.setCaretPosition(lineNumber[gt - 2] + 1);
gotoDialog.dispose();
}
});
JButton cancelButton = new JButton("取消");
cancelButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
gotoDialog.dispose();
}
});
Container con = gotoDialog.getContentPane();
con.setLayout(new FlowLayout());
con.add(gotoLabel);
con.add(linenum);
con.add(okButton);
con.add(cancelButton);
gotoDialog.setSize(200, 100);
gotoDialog.setResizable(true);
gotoDialog.setLocation(300, 280);
gotoDialog.setVisible(true);
}
private void exit() {
if(flag==2&& currentPath==null) {
int result = JOptionPane.showConfirmDialog(MainFrame.this,"是否更改保存到十组课设？","记事本" ,JOptionPane.YES_NO_CANCEL_OPTION,JOptionPane.PLAIN_MESSAGE);
if(result == JOptionPane.OK_CANCEL_OPTION) {
MainFrame.this.saveAs();
}else if(result ==JOptionPane.NO_OPTION) {
MainFrame.this.dispose();
MainFrame.this.setDefaultCloseOperation(EXIT_ON_CLOSE);
}
}else {
int result =JOptionPane.showConfirmDialog(MainFrame.this, "确定关闭？","系统提示",JOptionPane.YES_NO_OPTION,JOptionPane.PLAIN_MESSAGE);
if(result == JOptionPane.OK_OPTION) {
MainFrame.this.dispose();
MainFrame.this.setDefaultCloseOperation(EXIT_ON_CLOSE);
}
}
}
private void newFile() {
if(flag ==0 || flag ==1) {
return;
}else if(flag ==2 && this.currentPath ==null) {//修改后
int result = JOptionPane.showConfirmDialog(MainFrame.this, "是否更改保存到十组课设？","记事本",JOptionPane.YES_NO_CANCEL_OPTION,JOptionPane.PLAIN_MESSAGE);
if(result == JOptionPane.OK_OPTION) {
this.saveAs();//另存为
}else if(result == JOptionPane.NO_OPTION) {
this.textArea.setText("十组课设");
flag=1;
}
return;
}else if(flag == 2 && this.currentPath != null) {
int result = JOptionPane.showConfirmDialog(MainFrame.this,"是否更改保存到"+this.currentPath+"？","记事本",JOptionPane.YES_NO_CANCEL_OPTION,JOptionPane.PLAIN_MESSAGE );
if(result == JOptionPane.OK_CANCEL_OPTION) {
this.textArea.setText("");
this.setTitle("十组课设");
flag = 1;
}
}else if(flag == 3) {//保存的文件
this.textArea.setText("十组课设");
}
}
private void saveAs() {//打开保存框
JFileChooser chooser = new JFileChooser();//选择文件
int result = chooser.showSaveDialog(this);
if(result == JFileChooser.APPROVE_OPTION) {//生成的文件
File file = chooser.getSelectedFile();
FileWriter fileWriter = null;
//保存
try {
fileWriter=new FileWriter(file);
fileWriter.write(textArea.getText());
currentFileName=file.getName();
currentPath=file.getAbsolutePath();
fileWriter.flush();
this.flag=3;
this.setTitle(currentPath);
} catch (IOException e1) {
e1.printStackTrace();
}finally{
try {
if(fileWriter!=null) fileWriter.close();
} catch (IOException e1) {
e1.printStackTrace();
}
}
}
}
private void save()
{
if(this.currentPath==null)
{
this.saveAs();
if(this.currentPath==null)
{
return;
}
}
FileWriter fileWriter=null;
//保存
try
{
fileWriter=new FileWriter(new File(currentPath));
fileWriter.write(textArea.getText());
fileWriter.flush();
flag=3;
this.setTitle(this.currentPath);
} catch (IOException e1)
{
e1.printStackTrace();
}finally
{
try
{
if(fileWriter!=null) fileWriter.close();
} catch (IOException e1)
{
e1.printStackTrace();
}
}
}
private void openFile() {
if(flag == 2 && this.currentPath == null) {
int result = JOptionPane.showConfirmDialog(MainFrame.this, "是否更改保存到十组课设？","记事本",JOptionPane.YES_NO_CANCEL_OPTION,JOptionPane.PLAIN_MESSAGE);
if(result == JOptionPane.OK_CANCEL_OPTION) {
this.saveAs();
}
}else if(flag == 2 && this.currentPath !=null) {
int result = JOptionPane.showConfirmDialog(MainFrame.this,"是否保存更改到"+this.currentPath+"？","记事本",JOptionPane.YES_NO_CANCEL_OPTION,JOptionPane.PLAIN_MESSAGE);
if(result == JOptionPane.OK_CANCEL_OPTION) {
this.save();
}
}
JFileChooser chooser = new JFileChooser();//选择文件
int result = chooser.showOpenDialog(this);
if(result == JFileChooser.APPROVE_OPTION) {//获得选取的文件
File file = chooser.getSelectedFile();//打开已经保存过的文件，并提前保存文件名
currentFileName = file.getAbsolutePath();
flag = 3;
this.setTitle(this.currentPath);
BufferedReader bReader =null;
try {
//建立文件流(字符流)
InputStreamReader isr=new InputStreamReader(new FileInputStream(file),"GBK");
bReader=new BufferedReader(isr);//动态绑定
//读取内容
StringBuffer sb=new StringBuffer();
String line=null;
while((line=bReader.readLine())!=null){
sb.append(line+SystemParam.LINE_SEPARATOR);
}
//显示在文本框(多框)
textArea.setText(sb.toString());
} catch (FileNotFoundException e1) {
e1.printStackTrace();
} catch (IOException e1) {
e1.printStackTrace();
} finally{
try {
if(bReader!=null) bReader.close();
} catch (Exception e1) {
e1.printStackTrace();
}
}
}
}
public void Print() {
try{
p = getToolkit().getPrintJob(this,"ok",null);
g = p.getGraphics();//p 获取一个用于打印的 Graphics 的对象
this.textArea.printAll(g);
p.end();//释放对象 g
}
catch(Exception a){
}
}
private static void addPopup(Component component, final JPopupMenu popup) {
component.addMouseListener(new MouseAdapter() {
public void mousePressed(MouseEvent e) {
if (e.isPopupTrigger()) {
showMenu(e);
}
}
public void mouseReleased(MouseEvent e) {
if (e.isPopupTrigger()) {
showMenu(e);
}
}
private void showMenu(MouseEvent e) {
popup.show(e.getComponent(), e.getX(), e.getY());
}
});
}
public void cut(){
copy();
//标记开始位置
int start = this.textArea.getSelectionStart();
//标记结束位置
int end = this.textArea.getSelectionEnd();
//删除所选段
this.textArea.replaceRange("", start, end);
}
public void copy(){
//拖动选取文本
String temp = this.textArea.getSelectedText();
//把获取的内容复制到连续字符器，这个类继承了剪贴板接口
StringSelection text = new StringSelection(temp);
//把内容放在剪贴板
this.clipboard.setContents(text, null);
}
public void paste(){
//Transferable接口，把剪贴板的内容转换成数据
Transferable contents = this.clipboard.getContents(this);
//DataFalvor类判断是否能把剪贴板的内容转换成所需数据类型
DataFlavor flavor = DataFlavor.stringFlavor;
//如果可以转换
if(contents.isDataFlavorSupported(flavor)){
String str;
try {//开始转换
str=(String)contents.getTransferData(flavor);
//如果要粘贴时，鼠标已经选中了一些字符
if(this.textArea.getSelectedText()!=null){
//定位被选中字符的开始位置
int start = this.textArea.getSelectionStart();
//定位被选中字符的末尾位置
int end = this.textArea.getSelectionEnd();
//把粘贴的内容替换成被选中的内容
this.textArea.replaceRange(str, start, end);
}else{
//获取鼠标所在TextArea的位置
int mouse = this.textArea.getCaretPosition();
//在鼠标所在的位置粘贴内容
this.textArea.insert(str, mouse);
}
} catch(UnsupportedFlavorException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch(IllegalArgumentException e){
e.printStackTrace();
}
}
}
public void mySearch() {
final JDialog findDialog = new JDialog(this, "查找与替换", true);
Container con = findDialog.getContentPane();
con.setLayout(new FlowLayout(FlowLayout.LEFT));
JLabel searchContentLabel = new JLabel("查找内容(N) :");
JLabel replaceContentLabel = new JLabel("替换为(P) :");
final JTextField findText = new JTextField(22);
final JTextField replaceText = new JTextField(22);
final JCheckBox matchcase = new JCheckBox("区分大小写");
ButtonGroup bGroup = new ButtonGroup();
final JRadioButton up = new JRadioButton("向上(U)");
final JRadioButton down = new JRadioButton("向下(D)");
down.setSelected(true);
bGroup.add(up);
bGroup.add(down);
JButton searchNext = new JButton("查找下一个(F)");
JButton replace = new JButton("替换(R)");
final JButton replaceAll = new JButton("全部替换(A)");
searchNext.setPreferredSize(new Dimension(110, 22));
replace.setPreferredSize(new Dimension(110, 22));
replaceAll.setPreferredSize(new Dimension(110, 22));
// "替换"按钮的事件处理
replace.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if (replaceText.getText().length() == 0 && textArea.getSelectedText() != null)
textArea.replaceSelection("");
if (replaceText.getText().length() > 0 && textArea.getSelectedText() != null)
textArea.replaceSelection(replaceText.getText());
}
});
// "替换全部"按钮的事件处理
replaceAll.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
textArea.setCaretPosition(0); // 将光标放到编辑区开头
int a = 0, b = 0, replaceCount = 0;
if (findText.getText().length() == 0) {
JOptionPane.showMessageDialog(findDialog, "请填写查找内容!", "提示", JOptionPane.WARNING_MESSAGE);
findText.requestFocus(true);
return;
}
while (a > -1) {
int FindStartPos = textArea.getCaretPosition();
String str1, str2, str3, str4, strA, strB;
str1 = textArea.getText();
str2 = str1.toLowerCase();
str3 = findText.getText();
str4 = str3.toLowerCase();
if (matchcase.isSelected()) {
strA = str1;
strB = str3;
} else {
strA = str2;
strB = str4;
}
if (up.isSelected()) {
if (textArea.getSelectedText() == null) {
a = strA.lastIndexOf(strB, FindStartPos - 1);
} else {
a = strA.lastIndexOf(strB, FindStartPos - findText.getText().length() - 1);
}
} else if (down.isSelected()) {
if (textArea.getSelectedText() == null) {
a = strA.indexOf(strB, FindStartPos);
} else {
a = strA.indexOf(strB, FindStartPos - findText.getText().length() + 1);
}
}
if (a > -1) {
if (up.isSelected()) {
textArea.setCaretPosition(a);
b = findText.getText().length();
textArea.select(a, a + b);
} else if (down.isSelected()) {
textArea.setCaretPosition(a);
b = findText.getText().length();
textArea.select(a, a + b);
}
} else {
if (replaceCount == 0) {
JOptionPane.showMessageDialog(findDialog, "找不到您查找的内容!", "记事本", JOptionPane.INFORMATION_MESSAGE);
} else {
JOptionPane.showMessageDialog(findDialog, "成功替换" + replaceCount + "个匹配内容!", "替换成功", JOptionPane.INFORMATION_MESSAGE);
}
}
if (replaceText.getText().length() == 0 && textArea.getSelectedText() != null) {
textArea.replaceSelection("");
replaceCount++;
}
if (replaceText.getText().length() > 0 && textArea.getSelectedText() != null) {
textArea.replaceSelection(replaceText.getText());
replaceCount++;
}
}// end while
}
}); /* "替换全部"按钮的事件处理结束 */
// "查找下一个"按钮事件处理
searchNext.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
int a = 0, b = 0;
int FindStartPos = textArea.getCaretPosition();
String str1, str2, str3, str4, strA, strB;
str1 = textArea.getText();
str2 = str1.toLowerCase();
str3 = findText.getText();
str4 = str3.toLowerCase();
// "区分大小写"的CheckBox被选中
if (matchcase.isSelected()) {
strA = str1;
strB = str3;
} else {
strA = str2;
strB = str4;
}
if (up.isSelected()) {
if (textArea.getSelectedText() == null) {
a = strA.lastIndexOf(strB, FindStartPos - 1);
} else {
a = strA.lastIndexOf(strB, FindStartPos - findText.getText().length() - 1);
}
} else if (down.isSelected()) {
if (textArea.getSelectedText() == null) {
a = strA.indexOf(strB, FindStartPos);
} else {
a = strA.indexOf(strB, FindStartPos - findText.getText().length() + 1);
}
}
if (a > -1) {
if (up.isSelected()) {
textArea.setCaretPosition(a);
b = findText.getText().length();
textArea.select(a, a + b);
} else if (down.isSelected()) {
textArea.setCaretPosition(a);
b = findText.getText().length();
textArea.select(a, a + b);
}
} else {
JOptionPane.showMessageDialog(null, "找不到您查找的内容!", "记事本", JOptionPane.INFORMATION_MESSAGE);
}
}
});/* "查找下一个"按钮事件处理结束 */
// "取消"按钮及事件处理
JButton cancel = new JButton("取消");
cancel.setPreferredSize(new Dimension(110, 22));
cancel.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
findDialog.dispose();
}
});
// 创建"查找与替换"对话框的界面
JPanel bottomPanel = new JPanel();
JPanel centerPanel = new JPanel();
JPanel topPanel = new JPanel();
JPanel direction = new JPanel();
direction.setBorder(BorderFactory.createTitledBorder("方向 "));
direction.add(up);
direction.add(down);
direction.setPreferredSize(new Dimension(170, 60));
JPanel replacePanel = new JPanel();
replacePanel.setLayout(new GridLayout(2, 1));
replacePanel.add(replace);
replacePanel.add(replaceAll);
topPanel.add(searchContentLabel);
topPanel.add(findText);
topPanel.add(searchNext);
centerPanel.add(replaceContentLabel);
centerPanel.add(replaceText);
centerPanel.add(replacePanel);
bottomPanel.add(matchcase);
bottomPanel.add(direction);
bottomPanel.add(cancel);
con.add(topPanel);
con.add(centerPanel);
con.add(bottomPanel);
// 设置"查找与替换"对话框的大小、可更改大小(否)、位置和可见性
findDialog.setSize(410, 210);
findDialog.setResizable(true);
findDialog.setLocation(230, 280);
findDialog.setVisible(true);
}
}MQFontChooser
package p1;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.GraphicsEnvironment;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.FocusEvent;
import java.awt.event.FocusListener;
import javax.print.attribute.AttributeSet;
import javax.swing.BorderFactory;
import javax.swing.Box;
import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JScrollPane;
import javax.swing.JTextField;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import javax.swing.text.BadLocationException;
import javax.swing.text.Document;
import javax.swing.text.PlainDocument;
public class MQFontChooser extends JDialog{
public static final double CANCEL_OPTION = 0;//选择取消按钮的返回值
public static final double APPROVE_OPTION = 1;//选择确定按钮的返回值
private static final String CHINA_STRING = " 请输入文字 ";//中文预览的字符串
private static final String ENGLISH_STRING =" write down please ";//英文预览字符串
private static final String NUMBER_STRING = " 1234 ";//数字预览的字符串
private Font font = null;//预设字体
private Box box =null;//字体选择器组件容器
private JTextField fontText = null;//字体样式文本框
private JTextField styleText = null;//样式文本框
private JTextField sizeText = null;//文字大小文本框
private JTextField previewText = null;//预览文本框
private JRadioButton chinaButton = null;//中文预览
private JRadioButton englishButton = null;//英文预览
private JRadioButton numberButton = null;//数字预览
private JList fontList = null;//字体选择框
private JList styleList = null;//样式选择框
private JList sizeList = null;//文字大小选择框
private JButton approveButton = null;//确定按钮
private JButton cancelButton = null;//取消字体
private String [] fontArray = null;//所有字体
private String [] styleArray = {"常规","加粗","斜体","斜体加粗"};//预设样式
private String [] sizeArray = {"初号","小初","一号","小一","二号","小二","三号","小三","四号","小四","五号","小五","六号","小六","七号","八号","5","5.5","6.5","7.5","8","9","10","10.5","11","12","14","16","18","20","22","24","26","28","36","48","72"};//字体大小
private double [] sizeintArray = {42,36,26,24,22,18,16,15,14,12,10,9,8,7,6,5,5,5.5,6.5,7.5,8,9,10,10.5,11,12,14,16,18,20,22,24,26,28,36,48,72};//对应上面数组中的字体大小
private double returnValue = CANCEL_OPTION;//构造字体选择器
public MQFontChooser() {
this(new Font("宋体",Font.PLAIN,12));
}
public MQFontChooser(Font font) {
setTitle("文字选择器");
this.font = font;
init();//初始化UI组件
addListener();//添加监听器
setup();//按照预设字体显示
setModal(true);//基本设置
setResizable(false);//自动适应大小
pack();
}
private void init() {
GraphicsEnvironment eqEnvironment = GraphicsEnvironment.getLocalGraphicsEnvironment();//获得系统字体
fontArray = eqEnvironment.getAvailableFontFamilyNames();
box = Box.createVerticalBox();//主容器
box = Box.createVerticalBox();
box.setBorder(BorderFactory.createEmptyBorder(8, 8, 8, 8));
fontText = new JTextField();
fontText.setEditable(false);
fontText.setBackground(Color.WHITE);
styleText = new JTextField();
styleText.setEditable(false);
styleText.setBackground(Color.WHITE);
sizeText = new JTextField("12");
// 给文字大小文本框使用的Document文档，制定了一些输入字符的规则
Document doc = new PlainDocument(){
public void insertString(int offs, String str, javax.swing.text.AttributeSet a) throws BadLocationException {
if (str == null) {
return;
}
if (getLength() >= 3) {
return;
}
if (!str.matches("[0-9]+") && !str.equals("初号") && !str.equals("小初") && !str.equals("一号") && !str.equals("小一") && !str.equals("二号") && !str.equals("小二") && !str.equals("三号") && !str.equals("小三") && !str.equals("四号") && !str.equals("小四") && !str.equals("五号") && !str.equals("小五") && !str.equals("六号") && !str.equals("小六") && !str.equals("七号") && !str.equals("八号")) {
return;
}
super.insertString(offs, str, a);
sizeList.setSelectedValue(sizeText.getText(), true);
}
};
sizeText.setDocument(doc);
previewText = new JTextField(20);
previewText.setHorizontalAlignment(JTextField.CENTER);
previewText.setEditable(false);
previewText.setBackground(Color.WHITE);
chinaButton = new JRadioButton("中文预览", true);
englishButton = new JRadioButton("英文预览");
numberButton = new JRadioButton("数字预览");
ButtonGroup bg = new ButtonGroup();
bg.add(chinaButton);
bg.add(englishButton);
bg.add(numberButton);
fontList = new JList(fontArray);
styleList = new JList(styleArray);
sizeList = new JList(sizeArray);
approveButton = new JButton("确定");
cancelButton = new JButton("取消");
Box box1 = Box.createHorizontalBox();
JLabel l1 = new JLabel("字体:");
JLabel l2 = new JLabel("字形:");
JLabel l3 = new JLabel("大小:");
l1.setPreferredSize(new Dimension(165, 14));
l1.setMaximumSize(new Dimension(165, 14));
l1.setMinimumSize(new Dimension(165, 14));
l2.setPreferredSize(new Dimension(95, 14));
l2.setMaximumSize(new Dimension(95, 14));
l2.setMinimumSize(new Dimension(95, 14));
l3.setPreferredSize(new Dimension(80, 14));
l3.setMaximumSize(new Dimension(80, 14));
l3.setMinimumSize(new Dimension(80, 14));
box1.add(l1);
box1.add(l2);
box1.add(l3);
Box box2 = Box.createHorizontalBox();
fontText.setPreferredSize(new Dimension(160, 20));
fontText.setMaximumSize(new Dimension(160, 20));
fontText.setMinimumSize(new Dimension(160, 20));
box2.add(fontText);
box2.add(Box.createHorizontalStrut(5));
styleText.setPreferredSize(new Dimension(90, 20));
styleText.setMaximumSize(new Dimension(90, 20));
styleText.setMinimumSize(new Dimension(90, 20));
box2.add(styleText);
box2.add(Box.createHorizontalStrut(5));
sizeText.setPreferredSize(new Dimension(80, 20));
sizeText.setMaximumSize(new Dimension(80, 20));
sizeText.setMinimumSize(new Dimension(80, 20));
box2.add(sizeText);
Box box3 = Box.createHorizontalBox();
JScrollPane sp1 = new JScrollPane(fontList);
sp1.setPreferredSize(new Dimension(160, 100));
sp1.setMaximumSize(new Dimension(160, 100));
sp1.setMaximumSize(new Dimension(160, 100));
box3.add(sp1);
box3.add(Box.createHorizontalStrut(5));
JScrollPane sp2 = new JScrollPane(styleList);
sp2.setPreferredSize(new Dimension(90, 100));
sp2.setMaximumSize(new Dimension(90, 100));
sp2.setMinimumSize(new Dimension(90, 100));
box3.add(sp2);
box3.add(Box.createHorizontalStrut(5));
JScrollPane sp3 = new JScrollPane(sizeList);
sp3.setPreferredSize(new Dimension(80, 100));
sp3.setMaximumSize(new Dimension(80, 100));
sp3.setMinimumSize(new Dimension(80, 100));
box3.add(sp3);
Box box4 = Box.createHorizontalBox();
Box box5 = Box.createVerticalBox();
JPanel box6 = new JPanel(new BorderLayout());
box5.setBorder(BorderFactory.createTitledBorder("字符集"));
box6.setBorder(BorderFactory.createTitledBorder("示例"));
box5.add(chinaButton);
box5.add(englishButton);
box5.add(numberButton);
box5.setPreferredSize(new Dimension(90, 95));
box5.setMaximumSize(new Dimension(90, 95));
box5.setMinimumSize(new Dimension(90, 95));
box6.add(previewText);
box6.setPreferredSize(new Dimension(250, 95));
box6.setMaximumSize(new Dimension(250, 95));
box6.setMinimumSize(new Dimension(250, 95));
box4.add(box5);
box4.add(Box.createHorizontalStrut(4));
box4.add(box6);
Box box7 = Box.createHorizontalBox();
box7.add(Box.createHorizontalGlue());
box7.add(approveButton);
box7.add(Box.createHorizontalStrut(5));
box7.add(cancelButton);
box.add(box1);
box.add(box2);
box.add(box3);
box.add(Box.createVerticalStrut(5));
box.add(box4);
box.add(Box.createVerticalStrut(5));
box.add(box7);
getContentPane().add(box);
}
/**
* 按照预设字体显示
*/
private void setup() {
String fontName = font.getFamily();
int fontStyle = font.getStyle();
int fontSize = font.getSize();
/*
* 如果预设的文字大小在选择列表中，则通过选择该列表中的某项进行设值，否则直接将预设文字大小写入文本框
*/
boolean b = false;
for (int i = 0; i < sizeArray.length; i++) {
if (sizeArray[i].equals(String.valueOf(fontSize))) {
b = true;
break;
}
}
if(b){
// 选择文字大小列表中的某项
sizeList.setSelectedValue(String.valueOf(fontSize), true);
}else{
sizeText.setText(String.valueOf(fontSize));
}
// 选择字体列表中的某项
fontList.setSelectedValue(fontName, true);
// 选择样式列表中的某项
styleList.setSelectedIndex(fontStyle);
// 预览默认显示中文字符
chinaButton.doClick();
// 显示预览
setPreview();
}
/**
* 添加所需的事件监听器
*/
private void addListener() {
sizeText.addFocusListener(new FocusListener() {
public void focusLost(FocusEvent e) {
setPreview();
}
public void focusGained(FocusEvent e) {
sizeText.selectAll();
}
});
// 字体列表发生选择事件的监听器
fontList.addListSelectionListener(new ListSelectionListener() {
public void valueChanged(ListSelectionEvent e) {
if (!e.getValueIsAdjusting()) {
fontText.setText(String.valueOf(fontList.getSelectedValue()));
// 设置预览
setPreview();
}
}
});
styleList.addListSelectionListener(new ListSelectionListener() {
public void valueChanged(ListSelectionEvent e) {
if (!e.getValueIsAdjusting()) {
styleText.setText(String.valueOf(styleList.getSelectedValue()));
// 设置预览
setPreview();
}
}
});
sizeList.addListSelectionListener(new ListSelectionListener() {
public void valueChanged(ListSelectionEvent e) {
if (!e.getValueIsAdjusting()) {
if(!sizeText.isFocusOwner()){
sizeText.setText(String.valueOf(sizeList.getSelectedValue()));
}
// 设置预览
setPreview();
}
}
});
// 编码监听器
EncodeAction ea = new EncodeAction();
chinaButton.addActionListener(ea);
englishButton.addActionListener(ea);
numberButton.addActionListener(ea);
// 确定按钮的事件监听
approveButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
// 组合字体
font = groupFont();
// 设置返回值
returnValue = APPROVE_OPTION;
// 关闭窗口
disposeDialog();
}
});
// 取消按钮事件监听
cancelButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
disposeDialog();
}
});
}
/**
* 显示字体选择器
* @param owner 上层所有者
* @return 该整形返回值表示用户点击了字体选择器的确定按钮或取消按钮，参考本类常量字段APPROVE_OPTION和CANCEL_OPTION
*/
public final double showFontDialog(JFrame owner) {
setLocationRelativeTo(owner);
setVisible(true);
return returnValue;
}
/**
* 返回选择的字体对象
* @return 字体对象
*/
public final Font getSelectFont() {
return font;
}
/**
* 关闭窗口
*/
private void disposeDialog() {
MQFontChooser.this.removeAll();
MQFontChooser.this.dispose();
}
/**
* 显示错误消息
* @param errorMessage 错误消息
*/
private void showErrorDialog(String errorMessage) {
JOptionPane.showMessageDialog(this, errorMessage, "错误", JOptionPane.ERROR_MESSAGE);
}
/**
* 设置预览
*/
private void setPreview() {
Font f = groupFont();
previewText.setFont(f);
}
/**
* 按照选择组合字体
* @return 字体
*/
private Font groupFont() {
String fontName = fontText.getText();
double fontStyle = styleList.getSelectedIndex();
String sizeStr = sizeText.getText().trim();
// 如果没有输入
if(sizeStr.length() == 0) {
showErrorDialog("字体（大小）必须是有效“数值！");
return null;
}
double fontSize = 0;
// 通过循环对比文字大小输入是否在现有列表内
for (int i = 0; i < sizeArray.length; i++) {
if(sizeStr.equals(sizeArray[i])){
fontSize = sizeintArray[i];
break;
}
}
// 没有在列表内
if (fontSize == 0) {
try{
fontSize = Integer.parseInt(sizeStr);
if(fontSize < 1){
showErrorDialog("字体（大小）必须是有效“数值”！");
return null;
}
}catch (NumberFormatException nfe) {
showErrorDialog("字体（大小）必须是有效“数值”！");
return null;
}
}
return new Font(font.getFamily(),font.getStyle(),font.getSize());
}
/**
* 编码选择事件的监听动作
*
*/
class EncodeAction implements ActionListener {
public void actionPerformed(ActionEvent e) {
if (e.getSource().equals(chinaButton)) {
previewText.setText(CHINA_STRING);
} else if (e.getSource().equals(englishButton)) {
previewText.setText(ENGLISH_STRING);
} else {
previewText.setText(NUMBER_STRING);
}
}
}}
SystemParam
package p1;
public class SystemParam{
public static final String LINE_SEPARATOR = System.getProperty("line.separator");
}
TestLine
package p1;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Rectangle;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
public class TestLine extends javax.swing.JComponent{
private final Font DEFAULT_FONT = new Font(Font.MONOSPACED, Font.PLAIN, 13);
public final Color DEFAULT_BACKGROUD = new Color(228,228,228);
public final Color DEFAULT_FOREGROUD = Color.red;
public final int nHEIGHT = Integer.MAX_VALUE - 1000000;
public final int MARGIN = 5;
private int lineHeight;
private int fontLineHeight;
private int currentRowWidth;
private FontMetrics fontMetrics;
public TestLine() {
setFont(DEFAULT_FONT);
setForeground(DEFAULT_FOREGROUD);
setBackground(DEFAULT_BACKGROUD);
setPreferredSize(999999);
}
public void setPreferredSize(int row) {
int width = fontMetrics.stringWidth(String.valueOf(row));
if(currentRowWidth < width) {
currentRowWidth = width;
setPreferredSize(new Dimension(2*MARGIN + width +1,nHEIGHT));
}
}
@Override
public void setFont(Font font) {
super.setFont(font);
fontMetrics = getFontMetrics(getFont());
fontLineHeight = fontMetrics.getHeight();
}
public int getLineHeight() {
if(lineHeight ==0) {
return fontLineHeight;
}
return lineHeight;
}
public void setLineHeight(int lineHeight) {
if(lineHeight > 0) {
this.lineHeight = lineHeight;
}
}
public int getStartOffset() {
return 4;
}
@Override
protected void paintComponent(Graphics g) {
int nlineHeight = getLineHeight();
int startOffset = getStartOffset();
Rectangle drawHere = g.getClipBounds();
g.setColor(getBackground());
g.fillRect(drawHere.x, drawHere.y, drawHere.width, drawHere.height);
g.setColor(getForeground());
int startLineNum = (drawHere.y/nlineHeight)+1;
int endLineNum = startLineNum + (drawHere.height/nlineHeight);
int start = (drawHere.y/nlineHeight)*nlineHeight+nlineHeight-startOffset;
for(int i = startLineNum;i<=endLineNum;++i) {
String lineNum = String.valueOf(i);
int width = fontMetrics.stringWidth(lineNum);
g.drawString(lineNum +" ", MARGIN + currentRowWidth-width-1, start);
start +=nlineHeight;
}
setPreferredSize(endLineNum);
}}
标签：java,text,JMenuItem,private,add,new,import 来源： https://www.cnblogs.com/liang-xp/p/12253632.html