java记事本_增加关闭响应.java

能够编辑文本文档的程序

		}

		// 全选
		else if (e.getSource() == popupMenu_SelectAll || e.getSource() == mEdit_SelectAll) {
			Text.selectAll();
		}

		// 自动换行
		else if (e.getSource() == formatMenu_LineWrap) {
			if (formatMenu_LineWrap.getState()) {
				Text.setLineWrap(true);
			} else
				Text.setLineWrap(false);
		}

		// 字体设置
		else if (e.getSource() == formatMenu_Font || e.getSource() == fontButton) {
			Text.requestFocus();
			new MyFont();
		}

		// 设置字体颜色(前景色)
		else if (e.getSource() == formatMenu_Color_FgColor || e.getSource() == fgcolorButton) {
			Text.requestFocus();
			Color color = JColorChooser.showDialog(this, "更改字体颜色", Color.black);
			if (color != null) {
				Text.setForeground(color);
			} else
				return;
		}

		// 设置编辑区背景颜色
		else if (e.getSource() == formatMenu_Color_BgColor || e.getSource() == bgcolorButton) {
			Text.requestFocus();
			Color color = JColorChooser.showDialog(this, "更改背景颜色", Color.white);
			if (color != null) {
				Text.setBackground(color);
			} else
				return;
		}

		// 设置状态栏可见性
		else if (e.getSource() == viewMenu_Status) {
			if (viewMenu_Status.getState())
				statusBar.setVisible(true);

			else
				statusBar.setVisible(false);

		}

		// 帮助主题
		else if (e.getSource() == mHelp_HelpTopics || e.getSource() == helpButton) {
			JOptionPane.showMessageDialog(this, "记事本支持拖入文本读取\n" + "由于对编码不熟悉保存文\n件时未进行编码转换\n", "帮助主题", JOptionPane.INFORMATION_MESSAGE);
		}

		// 关于
		else if (e.getSource() == mHelp_About) {
			JOptionPane.showMessageDialog(this, "       VXBB的记事本\n" + "       QQ：491697374\n" + "     JAVA图形界面练习\n", "关于记事本", JOptionPane.INFORMATION_MESSAGE);
		}

		// 工具栏"粗体"按钮事件处理
		else if (e.getSource() == boldButton) {
			Text.requestFocus();
			Font tempFont = Text.getFont();

			if (Text.getFont().getStyle() == Font.PLAIN) {
				tempFont = new Font(Text.getFont().getFontName(), Font.BOLD, Text.getFont().getSize());
			} else if (Text.getFont().getStyle() == Font.ITALIC) {
				tempFont = new Font(Text.getFont().getFontName(), Font.BOLD + Font.ITALIC, Text.getFont().getSize());
			} else if (Text.getFont().getStyle() == Font.BOLD) {
				tempFont = new Font(Text.getFont().getFontName(), Font.PLAIN, Text.getFont().getSize());
			} else if (Text.getFont().getStyle() == (Font.BOLD + Font.ITALIC)) {
				tempFont = new Font(Text.getFont().getFontName(), Font.ITALIC, Text.getFont().getSize());
			}

			Text.setFont(tempFont);
		}

		// 工具栏"斜体"按钮事件处理
		else if (e.getSource() == italicButton) {
			Text.requestFocus();
			Font tempFont = Text.getFont();

			if (Text.getFont().getStyle() == Font.PLAIN) {
				tempFont = new Font(Text.getFont().getFontName(), Font.ITALIC, Text.getFont().getSize());
			} else if (Text.getFont().getStyle() == Font.ITALIC) {
				tempFont = new Font(Text.getFont().getFontName(), Font.PLAIN, Text.getFont().getSize());
			} else if (Text.getFont().getStyle() == Font.BOLD) {
				tempFont = new Font(Text.getFont().getFontName(), Font.BOLD + Font.ITALIC, Text.getFont().getSize());
			} else if (Text.getFont().getStyle() == (Font.BOLD + Font.ITALIC)) {
				tempFont = new Font(Text.getFont().getFontName(), Font.BOLD, Text.getFont().getSize());
			}

			Text.setFont(tempFont);
		}

	}/* 方法actionPerformed()结束 */

	class Clock extends Thread { // 模拟时钟
		public void run() {
			while (true) {
				GregorianCalendar time = new GregorianCalendar();
				int hour = time.get(Calendar.HOUR_OF_DAY);
				int min = time.get(Calendar.MINUTE);
				int second = time.get(Calendar.SECOND);
				statusLabel2.setText("    当前时间：" + hour + ":" + min + ":" + second);
				try {
					Thread.sleep(950);
				} catch (InterruptedException exception) {
				}

			}
		}
	}

	// 用于设置字体的类MyFont
	class MyFont implements ActionListener {
		final JDialog fontDialog;
		final JTextField tfFont, tfSize, tfStyle;
		final int fontStyleConst[] = { Font.PLAIN, Font.BOLD, Font.ITALIC, Font.BOLD + Font.ITALIC };
		final JList listStyle, listFont, listSize;
		JLabel sample;
		JPanel pane1, pane2, pane3, pane4;

		// 构造函数MyFont
		public MyFont() {

			fontDialog = new JDialog(Notepad4.this, "字体设置", true);
			Container con = fontDialog.getContentPane();
			con.setLayout(new BoxLayout(con, BoxLayout.Y_AXIS));
			pane1 = new JPanel();
			pane2 = new JPanel();
			pane3 = new JPanel();
			pane4 = new JPanel();
			Font currentFont = Text.getFont();

			JLabel lblFont = new JLabel("字体(F):");
			JLabel lblStyle = new JLabel("字形(Y):");
			JLabel lblSize = new JLabel("大小(S):");

			lblStyle.setHorizontalAlignment(SwingConstants.CENTER);
			lblSize.setHorizontalAlignment(SwingConstants.CENTER);
			lblFont.setPreferredSize(new Dimension(91, 20));
			lblStyle.setPreferredSize(new Dimension(82, 20));
			lblSize.setPreferredSize(new Dimension(100, 20));
			tfFont = new JTextField(13);
			tfFont.setText(currentFont.getFontName());
			tfFont.selectAll();
			tfFont.setPreferredSize(new Dimension(200, 20));
			tfStyle = new JTextField(10);
			if (currentFont.getStyle() == Font.PLAIN)
				tfStyle.setText("常规");
			else if (currentFont.getStyle() == Font.BOLD)
				tfStyle.setText("粗体");
			else if (currentFont.getStyle() == Font.ITALIC)
				tfStyle.setText("斜体");
			else if (currentFont.getStyle() == (Font.BOLD + Font.ITALIC))
				tfStyle.setText("粗斜体");

			tfFont.selectAll();
			tfStyle.setPreferredSize(new Dimension(200, 20));
			tfSize = new JTextField(7);
			tfSize.setText(currentFont.getSize() + "");
			tfSize.selectAll();
			tfSize.setPreferredSize(new Dimension(200, 20));

			final String fontStyle[] = { "常规", "粗体", "斜体", "粗斜体" };
			listStyle = new JList(fontStyle);

			GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
			final String fontName[] = ge.getAvailableFontFamilyNames();
			int defaultFontIndex = 0;
			for (int i = 0; i < fontName.length; i++) {
				if (fontName[i].equals(currentFont.getFontName())) {
					defaultFontIndex = i;
					break;
				}
			}
			listFont = new JList(fontName);
			listFont.setSelectedIndex(defaultFontIndex);
			listFont.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
			listFont.setVisibleRowCount(7);
			listFont.setFixedCellWidth(99);
			listFont.setFixedCellHeight(20);
			listFont.addListSelectionListener(new ListSelectionListener() {
				public void valueChanged(ListSelectionEvent event) {
					tfFont.setText(fontName[listFont.getSelectedIndex()]);
					tfFont.requestFocus();
					tfFont.selectAll();
					updateSample();
				}
			});

			listStyle.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
			if (currentFont.getStyle() == Font.PLAIN)
				listStyle.setSelectedIndex(0);
			else if (currentFont.getStyle() == Font.BOLD)
				listStyle.setSelectedIndex(1);
			else if (currentFont.getStyle() == Font.ITALIC)
				listStyle.setSelectedIndex(2);
			else if (currentFont.getStyle() == (Font.BOLD + Font.ITALIC))
				listStyle.setSelectedIndex(3);

			listStyle.setVisibleRowCount(7);
			listStyle.setFixedCellWidth(85);
			listStyle.setFixedCellHeight(20);
			listStyle.addListSelectionListener(new ListSelectionListener() {
				public void valueChanged(ListSelectionEvent event) {
					tfStyle.setText(fontStyle[listStyle.getSelectedIndex()]);
					tfStyle.requestFocus();
					tfStyle.selectAll();
					updateSample();
				}
			});

			final String fontSize[] = { "8", "9", "10", "11", "12", "14", "16", "18", "20", "22", "24", "26", "28", "36", "48", "72" };
			listSize = new JList(fontSize);
			int defaultFontSizeIndex = 0;
			for (int i = 0; i < fontSize.length; i++) {
				if (fontSize[i].equals(currentFont.getSize() + "")) {
					defaultFontSizeIndex = i;
					break;
				}
			}
			listSize.setSelectedIndex(defaultFontSizeIndex);

			listSize.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
			listSize.setVisibleRowCount(7);
			listSize.setFixedCellWidth(50);
			listSize.setFixedCellHeight(20);
			listSize.addListSelectionListener(new ListSelectionListener() {
				public void valueChanged(ListSelectionEvent event) {
					tfSize.setText(fontSize[listSize.getSelectedIndex()]);
					tfSize.requestFocus();
					tfSize.selectAll();
					updateSample();
				}
			});
			fontOkButton = new JButton("确定");
			fontOkButton.addActionListener(this);
			JButton cancelButton = new JButton("取消");
			cancelButton.addActionListener(new ActionListener() {
				public void actionPerformed(ActionEvent e) {
					fontDialog.dispose();
				}
			});

			sample = new JLabel(" 记事本 ");
			sample.setHorizontalAlignment(SwingConstants.CENTER);
			sample.setPreferredSize(new Dimension(150, 31));

			JPanel samplePanel = new JPanel();
			samplePanel.setBorder(BorderFactory.createTitledBorder("示例"));
			samplePanel.add(sample);

			pane1.add(lblFont);
			pane1.add(lblStyle);
			pane1.add(lblSize);
			pane2.add(tfFont);
			pane2.add(tfStyle);
			pane2.add(tfSize);

			pane3.add(new JScrollPane(listFont));
			pane3.add(new JScrollPane(listStyle));
			pane3.add(new JScrollPane(listSize));
			pane4.add(samplePanel);
			pane4.add(fontOkButton);
			pane4.add(cancelButton);
			con.add(pane1);
			con.add(pane2);
			con.add(pane3);
			con.add(pane4);
			updateSample();

			fontDialog.pack();
			fontDialog.setSize(400, 400);
			fontDialog.setLocation(200, 200);
			fontDialog.setResizable(false);
			fontDialog.setVisible(true);
		}// 构造函数结束

		// 更新示例显示的字体和风格大小等
		public void updateSample() {
			Font sampleFont = new Font(tfFont.getText(), fontStyleConst[listStyle.getSelectedIndex()], Integer.parseInt(tfSize.getText()));
			sample.setFont(sampleFont);
		}// End method updateSample

		// 设置文本编辑区的字体
		public void actionPerformed(ActionEvent e) {
			if (e.getSource() == fontOkButton) {
				Font tempFont = new Font(tfFont.getText(), fontStyleConst[listStyle.getSelectedIndex()], Integer.parseInt(tfSize.getText()));
				Text.setFont(tempFont);
				fontDialog.dispose();
			}
		}// End method actionPerformed
	}/* End of class MyFont */

	public void removeUpdate(DocumentEvent e) {
		mEdit_Undo.setEnabled(true);
		popupMenu_Undo.setEnabled(true);
		undoButton.setEnabled(true);
	}

	public void insertUpdate(DocumentEvent e) {
		mEdit_Undo.setEnabled(true);
		popupMenu_Undo.setEnabled(true);
		undoButton.setEnabled(true);
	}

	public void changedUpdate(DocumentEvent e) {
		mEdit_Undo.setEnabled(true);
		popupMenu_Undo.setEnabled(true);
		undoButton.setEnabled(true);
	}

	// End of DocumentListener

	// 实现了接口UndoableListener的类UndoHandler
	class UndoHandler implements UndoableEditListener {
		public void undoableEditHappened(UndoableEditEvent uee) {
			undo.addEdit(uee.getEdit());
		}
	}

	public static void main(String s[]) throws ClassNotFoundException, InstantiationException, IllegalAccessException, UnsupportedLookAndFeelException {

		// UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
		UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
		Text = new JTextArea();
		Text.setDragEnabled(true); // 支持自动拖放
		Text.setTransferHandler(new FileTransferHandler(Text));
		new Notepad4();
	}
}

class FileTransferHandler extends TransferHandler {
	JTextArea Text;

	public FileTransferHandler(JTextArea Text) {
		this.Text = Text;
	}

	public boolean importData(JComponent c, Transferable t) {
		try {
			List files = (List) t.getTransferData(DataFlavor.javaFileListFlavor);
			addFilesToFilePathList(files);
			return true;
		} catch (UnsupportedFlavorException ufe) {
			ufe.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return false;
	}

	public boolean canImport(JComponent c, DataFlavor[] flavors) {
		for (int i = 0; i < flavors.length; i++) {
			if (DataFlavor.javaFileListFlavor.equals(flavors[i])) {
				return true;
			}
		}
		return false;
	}

	private void addFilesToFilePathList(List files) {
		for (Iterator iter = files.iterator(); iter.hasNext();) {
			File file = (File) iter.next();
			String str = null;
			try {
				FileReader fr = new FileReader(file);
				BufferedReader bfr = new BufferedReader(fr);
				Text.setText("");
				while ((str = bfr.readLine()) != null) {
					Text.append(str + "\15\12");
				}
			} catch (Exception b) {
			}
		}
	}
}