05151858102.java

java记事本

				filename = null;
			}
			if (filename != null)
			{
				writeFile(filename);
				this.updates();
				s = textarea.getText();// 保存后内容为当前内容
			}
			else
			{
				filename = ss;
			}
		}
		else if (EventS == exititem)
		{// 退出文件
			ifsave = this.tosave();
			if (ifsave == 1)
			{// 如果改变
				saveasfiledialog.setVisible(true);
				filename = saveasfiledialog.getDirectory() + saveasfiledialog.getFile();
				// 没有选择文件
				if ((savefiledialog.getDirectory() == null) && (savefiledialog.getFile() == null))
				{
					filename = null;
				}
				if (filename != null)
				{
					writeFile(filename);
					System.exit(0);
				}
			}
			else if (ifsave == -1)
			{
				System.exit(0);
			}
			else if (ifsave == 0)
			{
			}
		}
		else if (EventS == redoitem || EventS == predoitem)
		{
			undoManger.redo();
		}
		else if (EventS == undoitem || EventS == pundoitem)
		{
			undoManger.undo();
		}
		else if (EventS == selectitem | EventS == pselectitem)
		{// 全选
			textarea.selectAll();
		}
		else if (EventS == cutitem | EventS == pcutitem)
		{// 剪切
			String text = textarea.getSelectedText();
			StringSelection selection = new StringSelection(text);
			clipboard.setContents(selection, null);
			textarea.replaceRange("", textarea.getSelectionStart(), textarea.getSelectionEnd());
		}
		else if (EventS == copyitem | EventS == pcopyitem)
		{// 复制
			String text = textarea.getSelectedText();
			StringSelection selection = new StringSelection(text);
			clipboard.setContents(selection, null);
		}
		else if (EventS == pasteitem | EventS == ppasteitem)
		{// 粘贴
			Transferable contents = clipboard.getContents(this);
			if (contents == null)
				return;
			String text = "";
			try
			{
				text = (String) contents.getTransferData(DataFlavor.stringFlavor);
			}
			catch (Exception ex)
			{
			}
			textarea.replaceRange(text, textarea.getSelectionStart(), textarea.getSelectionEnd());
		}
		else if (EventS == deleteitem | EventS == pdeleteitem)
		{// 删除
			// 以下两种方法选一种
			// textarea.replaceSelection("");
			textarea.replaceRange("", textarea.getSelectionStart(), textarea.getSelectionEnd());
		}
		else if (EventS == finditem)
		{// 查找
			JDialog jfind = new FindJDialog(textarea, this);
			jfind.setVisible(true);
		}
		else if (EventS == findnextitem)
		{// 查找下一个
			String text1 = findnextstr;// 要查找的内容
			String findstr = textarea.getText();// 进行大小写判断用的,并重新获得当前内容
			if (!findnextboolean)
			{// 不区分大小写
				findstr = findstr.toLowerCase();
			}
			if (!text1.equals(""))
			{
				if (!findnextboolean)
				{// 不区分大小写
					text1 = text1.toLowerCase();// 转换成小写
				}
				int index, i = textarea.getSelectionStart(), t = textarea.getSelectionEnd();
				// 向上查找
				if (findnextupdown.equals("up"))
				{
					String ftp = findstr.substring(0, i);
					index = ftp.lastIndexOf(text1);
					if (index != -1)
					{
						i = index - 1;
						textarea.select(index, index + text1.length());
					}
					else
					{
						JOptionPane.showMessageDialog(this, "找不到 " + findnextstr, "提示",
							JOptionPane.INFORMATION_MESSAGE);
					}
				}
				// 向下查找
				else
				{
					index = findstr.indexOf(text1, t);
					if (index != -1)
					{
						t = index + text1.length();
						textarea.select(index, index + text1.length());
					}
					else
					{
						JOptionPane.showMessageDialog(this, "找不到 " + findnextstr, "提示",
							JOptionPane.INFORMATION_MESSAGE);
					}
				}
				this.repaint();
			}
			else
			{
				JDialog jfind = new FindJDialog(textarea, this);
				jfind.setVisible(true);
			}
		}
		else if (EventS == replaceitem)
		{// 替换
			ReplaceJDialog rf = new ReplaceJDialog(textarea, this);
			rf.setVisible(true);
		}
		else if (EventS == autorowitem)
		{// 自动换行
			if (autorowitem.getState())
			{
				textarea.setLineWrap(true);
			}
			else
			{
				textarea.setLineWrap(false);
			}
		}
		else if (EventS == fontitem)
		{// 字体设置
			FontJDialog fj = new FontJDialog(textarea, this);
			fj.setVisible(true);
		}
		else if (EventS == coloritem)
		{// 字体颜色
			fontColor(e);// 以e作参数调用自定义函数fontColor()
		}
		else if (EventS == aboutitem)
		{// 关于对话框
			JOptionPane.showMessageDialog(this, "傻刚刚噶...", "关于 JAVA 记事本",
				JOptionPane.INFORMATION_MESSAGE);
		}
	}

	// 字体颜色方法
	public void fontColor(ActionEvent e)
	{
		Color fcolor = textarea.getForeground();// 将textarea.getForeground();赋值给Color对象fcolor
		jColorChooser.setColor(fcolor);// 调用JColorChooser类中的方法setColor()
		// jColorChooser.showDialog()调出颜色选择窗口...
		textarea.setForeground(JColorChooser.showDialog(textarea, "选择颜色", fcolor));// 直接调用静态方法
	}

	// 读文件
	public void readFile(String filename)
	{
		try
		{
			File file = new File(filename);
			FileReader readin = new FileReader(file);
			int size = (int) file.length();
			int charsread = 0;
			char[] content = new char[size];
			while (readin.ready())
				charsread += readin.read(content, charsread, size - charsread);
			readin.close();
			textarea.setText(new String(content, 0, charsread));
		}
		catch (IOException e)
		{
			System.out.println("Error Opening file");
			return;
		}
	}

	// 写文件
	public void writeFile(String filename)
	{
		try
		{
			File file;
			// 判断保存的文件名是否有(.txt)扩展名
			if (filename.substring(filename.length() - 4, filename.length()).equals(".txt"))
			{
				file = new File(filename);
			}
			else
			{
				filename = filename + ".txt";
				file = new File(filename);
			}
			FileWriter writeout = new FileWriter(file);
			writeout.write(textarea.getText());
			writeout.close();
		}
		catch (IOException e)
		{
			System.out.println("Error writing file");
			return;
		}
	}

	int tosave()
	{// 判断是否要保存文件
		// **********************
		// 判断文件内容有没有改变
		stemp = textarea.getText();
		if (!(s.equals(stemp)))
		{
			ifsave = 1;
		}
		else
		{
			ifsave = -1;
		}
		// **********************
		if (ifsave == 1)
		{
			int orsave = JOptionPane.showConfirmDialog(this, "是否保存文件" + filename, "记事本",
				JOptionPane.YES_NO_CANCEL_OPTION);
			switch (orsave)
			{
			case JOptionPane.YES_OPTION:
				return 1;
			case JOptionPane.NO_OPTION:
				return -1;
			case JOptionPane.CANCEL_OPTION:
				return 0;
			default:
				return 0;
			}
		}
		else
		{
			return -1;
		}
	}

	// 更新文件
	public void updates()
	{
		// 判断保存的文件名是否有(.txt)扩展名
		if (!filename.substring(filename.length() - 4, filename.length()).equals(".txt"))
		{
			filename = filename + ".txt";
		}
		String strtemp = "";
		if (filename == null)
		{
			strtemp = "无标题";
		}
		else
		{
			strtemp = filename;
		}
		this.setTitle(strtemp);
		this.repaint();
	}

	public void mouseReleased(MouseEvent e)
	{
		if (e.isPopupTrigger())
			jpm.show(this.textarea, e.getX(), e.getY());
	}

	public void mouseClicked(MouseEvent e)
	{
	}

	public void mouseEntered(MouseEvent e)
	{
	}

	public void mouseExited(MouseEvent e)
	{
	}

	public void mousePressed(MouseEvent e)
	{
	}
}

// **************************************************************************
// 字体类
class FontJDialog extends JDialog implements ActionListener, KeyListener
{ // ,ItemListener
	private final static long serialVersionUID = 1L;
	JTextArea textarea = new JTextArea();
	Panel contentPane = new Panel();
	JLabel jLabel_ziti = new JLabel();
	String[] data1 =
	{
			"Arial", "Arial Black", "Arial Narrow", "Basemic", "Book Antiqua", "Bookman Old Style",
			"Century Gothic", "Comic Sans MS", "Fixedsys", "Garamond", "Monotype Corsiva", "Roman",
			"方正舒体", "方正姚体", "仿宋_GB2312", "黑体", "华文彩云", "华文仿宋", "华文细黑", "华文新魏", "华文行楷", "华文中宋",
			"楷体_GB2312", "隶书", "宋体", "宋体-方正超大字符集", "新宋体", "幼圆"
	};
	JList jList1 = new JList(data1);
	JLabel jLabel_zixing = new JLabel();
	String[] data2 =
	{
			"常规", "斜体", "粗体"
	}; // ,"粗斜体"
	JList jList2 = new JList(data2);
	JLabel jLabel_daxiao = new JLabel();
	String[] data3 =
	{
			"7", "8", "9", "10", "11", "12", "13", "14", "16", "18", "20", "22", "24", "26", "28",
			"36", "48", "60", "72"
	};
	JList jList3 = new JList(data3);
	JButton jButton1 = new JButton(); // 确定按钮
	JComboBox jComboBox1 = new JComboBox();
	JLabel jLabel_charset = new JLabel();
	JTextField jTextField_preview = new JTextField("Preview Font");
	JTextField jTextField_font = new JTextField("宋体");
	JTextField jTextField_grapheme = new JTextField("常规");
	JTextField jTextField_fontsize = new JTextField("12");
	JButton jButton2 = new JButton(); // 取消按钮
	int index;
	String ziti = "宋体";
	int daxiao = 18;
	int zixing = 0;// 0为常规即Font.PLAIN;

	public FontJDialog(JTextArea textarea, JFrame mainDialog)
	{
		super(mainDialog, "字体", true);
		this.textarea = textarea;
		enableEvents(AWTEvent.WINDOW_EVENT_MASK);
		try
		{
			Init(); // 执行初始化
		}
		catch (Exception e)
		{
			e.printStackTrace();
		}
	}

	private void Init() throws Exception
	{
		// setLayout();
		contentPane.setLayout(null);
		this.getContentPane().setBackground(Color.lightGray);
		this.setSize(new Dimension(440, 335));
		// this.setTitle("字体");
		this.setModal(true);
		jLabel_ziti.setText("字体");
		jList1.setToolTipText("提示");
		jList1.setSelectedIndex(24);// 第24是"宋体"
		jLabel_zixing.setText("字型");
		jList2.setSelectedIndex(0);// 第0是"常规"
		jLabel_daxiao.setText("大小");
		jList3.setSelectedIndex(9);// 第8是"18"
		jButton1.setText("确定");
		jButton2.setText("取消");
		jLabel_charset.setText("字符集");
		// 把文本框的文本设置为中部对齐，两种方法
		// jTextField_preview.setHorizontalAlignment(jTextField_preview.CENTER);
		jTextField_preview.setHorizontalAlignment(0);// 2为左对齐 4为右对齐 0为中部对齐
		jTextField_preview.setEnabled(false); // 不可编辑
		jTextField_preview.setBackground(Color.lightGray);// 背景色
		jTextField_preview.setForeground(Color.WHITE);// 前景色
		jTextField_preview.setDisabledTextColor(Color.BLACK);// 字体色
		jTextField_preview.setSize(20, 10);
		JScrollPane scrollPane1 = new JScrollPane(jList1);
		JScrollPane scrollPane2 = new JScrollPane(jList2);
		JScrollPane scrollPane3 = new JScrollPane(jList3);
		// Or in two steps:
		// JScrollPane scrollPane = new JScrollPane();
		// scrollPane.getViewport().setView(dataList);
		jLabel_ziti.setBounds(new Rectangle(10, 8, 65, 23));
		jLabel_zixing.setBounds(new Rectangle(163, 8, 65, 23));
		jLabel_daxiao.setBounds(new Rectangle(274, 8, 65, 23));
		jTextField_font.setEnabled(false);
		jTextField_font.setDisabledTextColor(Color.BLACK);