1 package peng_jun;
2
3 import java.awt.*;
4 import java.awt.event.*;
5
6 import javax.swing.*;
7
8 import java.io.*;
9
10 import javax.swing.filechooser.*;
11
12 import java.awt.datatransfer.*;
13
14 public class Text3 extends JFrame {
15 public static void main(String[] args) throws Exception {
16 new Text3();
17 }
18
19 TextArea area = new TextArea();;// 文本域
20 String name = null;// 文件名
21 String board = null;
22 Clipboard cb;// 系统粘贴板
23
24 JMenu font = new JMenu("字体");
25 JMenuItem bold = new JMenuItem("加粗");
26 JMenuItem italics = new JMenuItem("斜体");
27 JMenu size = new JMenu("字号");
28 JMenuItem size_18 = new JMenuItem("18");
29 JMenuItem size_19 = new JMenuItem("19");
30 JMenuItem size_20 = new JMenuItem("20");
31 JMenuItem size_21 = new JMenuItem("21");
32 JMenu color = new JMenu("颜色");
33 final JMenuItem red = new JMenuItem("红色");
34 JMenuItem blue = new JMenuItem("蓝色");
35
36 JMenu file = new JMenu("文件");// 定义“文件”菜单项
37 JMenuItem rebuild = new JMenuItem("新建");
38 JMenuItem save = new JMenuItem("保存");
39 JMenuItem open = new JMenuItem("打开");
40 JMenuItem anotherSave = new JMenuItem("另存为");
41 JMenuItem clear = new JMenuItem("清除");
42 JMenuItem close = new JMenuItem("退出");
43
44 JMenu edit = new JMenu("编辑");// 定义“编辑”菜单项
45 JMenuItem cut = new JMenuItem("剪切");
46 JMenuItem copy = new JMenuItem("复制");
47 JMenuItem plaster = new JMenuItem("粘贴");
48 JMenuItem all = new JMenuItem("全选");
49
50 JMenu help = new JMenu("帮助");// 定义“帮助”菜单项
51 JMenuItem about = new JMenuItem("关于");
52
53 Toolkit kit = Toolkit.getDefaultToolkit();// Toolkit获得本机系统的屏幕的参数
54 JMenuBar jmb = new JMenuBar();// 创建菜单条
55
56 Text3() throws Exception {// 构造函数
57 setTitle("记事本");
58
59 // 设置快捷键
60 bold.setAccelerator(KeyStroke.getKeyStroke("ctrl B"));
61 italics.setAccelerator(KeyStroke.getKeyStroke("ctrl I"));
62 rebuild.setAccelerator(KeyStroke.getKeyStroke("ctrl N"));
63 save.setAccelerator(KeyStroke.getKeyStroke("ctrl S"));
64 copy.setAccelerator(KeyStroke.getKeyStroke("ctrl C"));
65 open.setAccelerator(KeyStroke.getKeyStroke("ctrl O"));
66 cut.setAccelerator(KeyStroke.getKeyStroke("ctrl X"));
67 plaster.setAccelerator(KeyStroke.getKeyStroke("ctrl V"));
68 all.setAccelerator(KeyStroke.getKeyStroke("ctrl A"));
69
70 add(jmb);
71 setJMenuBar(jmb);// 设置菜单条
72 add(area);
73 file.add(rebuild);
74 file.add(save);
75 file.add(open);
76 file.add(anotherSave);
77 file.addSeparator();
78 file.add(clear);
79 file.add(close);
80 // JScrollPane scroldPane=new JScrollPane(area); //设置滚动轴
81 // add(scroldPane);
82
83 edit.add(cut);
84 edit.add(copy);
85 edit.add(plaster);
86 edit.add(all);
87
88 font.add(bold);
89 font.add(italics);
90 size.add(size_18);
91 size.add(size_19);
92 size.add(size_20);
93 size.add(size_21);
94 color.add(red);
95 color.add(blue);
96 font.add(size);
97 font.add(color);
98
99 help.add(about);
100 // 添加事件
101 clear.addActionListener(new HandleAct());
102 close.addActionListener(new HandleAct());
103 bold.addActionListener(new HandleAct());
104 italics.addActionListener(new HandleAct());
105 size_18.addActionListener(new HandleAct());
106 size_19.addActionListener(new HandleAct());
107 size_20.addActionListener(new HandleAct());
108 size_21.addActionListener(new HandleAct());
109 red.addActionListener(new HandleAct());
110 blue.addActionListener(new HandleAct());
111
112 jmb.add(file);
113 jmb.add(edit);
114 jmb.add(font);
115 jmb.add(help);
116 setSize(600, 400);// 大小信息
117 //setLocation(300, 200);// 文本框位置
118 setVisible(true);
119 setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
120
121 cb = Toolkit.getDefaultToolkit().getSystemClipboard();// 调用系统剪贴板
122 save.addActionListener(new ActionListener() {
123 public void actionPerformed(ActionEvent e) {
124 try {
125 saveText();
126 } catch (Exception ex) {
127 }
128 }
129 });
130 open.addActionListener(new ActionListener() {
131 public void actionPerformed(ActionEvent e) {
132 try {
133 openText();
134 } catch (Exception ex) {
135 }
136 }
137 });
138 rebuild.addActionListener(new ActionListener() {
139 public void actionPerformed(ActionEvent e) {
140 try {
141 area.setText("");
142 name = null;
143 } catch (Exception ex) {
144 }
145 }
146 });
147 anotherSave.addActionListener(new ActionListener() {
148 public void actionPerformed(ActionEvent e) {
149 anotherSaveText();
150 }
151 });
152
153 size_18.addActionListener(new ActionListener() {
154
155 @Override
156 public void actionPerformed(ActionEvent e) {
157 // TODO 自动生成的方法存根
158 Font oldF = area.getFont();// 获取当前字体
159 String name = oldF.getName();// 获取当前字体的名字
160 area.setFont(new Font(name, oldF.getStyle(), 18));
161 }
162 });
163
164 cut.addActionListener(new ActionListener() // 剪切
165 {
166 public void actionPerformed(ActionEvent e) {
167 board = area.getSelectedText();
168 cb.setContents(new StringSelection(board), null);
169 area.replaceRange("", area.getSelectionStart(),
170 area.getSelectionEnd());
171 }
172 });
173 copy.addActionListener(new ActionListener() // 复制
174 {
175 public void actionPerformed(ActionEvent e) {
176 board = area.getSelectedText();
177 cb.setContents(new StringSelection(board), null);
178 }
179 });
180 plaster.addActionListener(new ActionListener() // 粘贴
181 {
182 public void actionPerformed(ActionEvent e) {
183 try {
184 Transferable content = cb.getContents(null);
185 String st = (String) content
186 .getTransferData(DataFlavor.stringFlavor);
187 area.replaceRange(st, area.getSelectionStart(),
188 area.getSelectionEnd());
189 } catch (Exception ex) {
190 }
191 }
192 });
193 all.addActionListener(new ActionListener() // 全选
194 {
195 public void actionPerformed(ActionEvent e) {
196 area.setSelectionStart(0);
197 area.setSelectionEnd(area.getText().length());
198 }
199 });
200
201 about.addActionListener(new ActionListener() {// 帮助
202 public void actionPerformed(ActionEvent e) {
203 JFrame frame = new JFrame("关于");
204 frame.setSize(250, 150);
205 frame.setLocation(400, 300);
206 JTextArea area1 = new JTextArea("java简易文本编辑器开发人员："+‘\n‘
207 + "彭军军 201321091103，"+‘\n‘
208 + "鲍静瑶201321091080，"+‘\n‘
209 + "刘瑾 201321091090.");
210 frame.add(area1);
211 frame.setVisible(true);
212 }
213 });
214 }
215
216 public void openText() // 打开
217 {
218 JFileChooser chooser = new JFileChooser();
219 FileNameExtensionFilter filter = new FileNameExtensionFilter("Files",
220 "txt", "java");
221 chooser.setFileFilter(filter);
222 chooser.setCurrentDirectory(new File("."));
223 int result = chooser.showOpenDialog(Text3.this);
224 if (result == JFileChooser.APPROVE_OPTION) {
225 name = chooser.getSelectedFile().getPath();
226 setTitle(name);
227 try {
228 BufferedReader in = new BufferedReader(new FileReader(name));
229 String line = null;
230 String datas = "";
231 while ((line = in.readLine()) != null) {
232 if (datas == "") {
233 datas = datas + line;
234 } else {
235 datas = datas + "\n" + line;
236 }
237 }
238 area.setText(datas);
239 in.close();
240 } catch (Exception ex) {
241 }
242 }
243 }
244
245 public void saveText() // 保存
246 {
247 if (name == null) {
248 JFileChooser chooser = new JFileChooser();
249 FileNameExtensionFilter filter = new FileNameExtensionFilter(
250 "Files", "txt", "java");// 限制扩展名，只能杜渠道txt和java类型的文件
251 chooser.setFileFilter(filter);
252 chooser.setCurrentDirectory(new File("."));
253 int result = chooser.showSaveDialog(Text3.this);
254 if (result == JFileChooser.APPROVE_OPTION) {
255 name = chooser.getSelectedFile().getPath();
256 try {
257 OutputStream out = new FileOutputStream(name);
258 String datas = area.getText();
259 out.write(datas.getBytes());
260 out.close();
261 } catch (Exception ex) {
262 }
263 }
264 } else {
265 try {
266 OutputStream out = new FileOutputStream(name);
267 String datas = area.getText();
268 out.write(datas.getBytes());
269 out.close();
270 } catch (Exception ex) {
271 }
272 }
273 }
274
275 public void anotherSaveText() // 另存为
276 {
277 JFileChooser chooser = new JFileChooser();
278 FileNameExtensionFilter filter = new FileNameExtensionFilter("Files",
279 "txt", "java");
280 chooser.setFileFilter(filter);
281 chooser.setCurrentDirectory(new File("."));
282 int result = chooser.showSaveDialog(Text3.this);
283 if (result == JFileChooser.APPROVE_OPTION) {
284 name = chooser.getSelectedFile().getPath();
285 try {
286 OutputStream out = new FileOutputStream(name);
287 String datas = area.getText();
288 out.write(datas.getBytes());
289 out.close();
290 } catch (Exception ex) {
291 }
292 }
293 }
294
295 class HandleAct implements ActionListener {//内部类
296
297 public void actionPerformed(ActionEvent e) {
298 // TODO 自动生成的方法存根
299 Font oldF = area.getFont();// 获取当前字体
300 String name = oldF.getName();// 获取当前字体的名字
301 int size = oldF.getSize();// 当前字体的大小
302 if (e.getSource() == size_18)
303 area.setFont(new Font(name, oldF.getStyle(), 18));
304 else if (e.getSource() == size_19)
305 area.setFont(new Font(name, oldF.getStyle(), 19));
306 else if (e.getSource() == size_20)
307 area.setFont(new Font(name, oldF.getStyle(), 20));
308 else if (e.getSource() == size_21)
309 area.setFont(new Font(name, oldF.getStyle(), 21));
310
311 if (e.getSource() == red) {
312 area.setForeground(Color.red);// 设置文字颜色
313 } else if (e.getSource() == blue) {
314 area.setForeground(Color.blue);// 设置文字颜色
315 }
316
317 if (e.getSource() == bold) {
318 area.setFont(new Font(name, Font.BOLD, size));
319 } else if (e.getSource() == italics) {
320 area.setFont(new Font(name, Font.ITALIC, size));
321 }
322
323 if (e.getSource() == clear) {
324 area.setText(" ");
325 } else if (e.getSource() == close) {
326 System.exit(0);
327 }
328
329 }
330
331 }
332
333 }
时间： 2024-10-25 23:47:12