支持语法高亮的Java Swing简单文本编辑器

蔚落 2023-10-04 15:43 27阅读 0赞

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import java.awt.*;
    import java.awt.event.*;
    import javax.swing.*;
    import javax.swing.event.CaretEvent;
    import javax.swing.event.CaretListener;
    import javax.swing.event.DocumentEvent;
    import javax.swing.event.DocumentListener;
    
    import org.fife.ui.rtextarea.*;
    import org.fife.ui.rsyntaxtextarea.*;
    import java.io.*;
    
    @SuppressWarnings("serial")
    public class Document extends JFrame implements ActionListener, DocumentListener {
    	private void newFile() {
    		if (changed)
    			saveFile();
    		file = null;
    		textArea.setText("");
    		changed = false;
    		setTitle("Editor");
    	}
    
    	private String readFile(File file) {
    		StringBuilder result = new StringBuilder();
    		try (FileReader fr = new FileReader(file); BufferedReader reader = new BufferedReader(fr);) {
    			String line;
    			while ((line = reader.readLine()) != null) {
    				result.append(line + "\n");
    			}
    		} catch (IOException e) {
    			e.printStackTrace();
    			JOptionPane.showMessageDialog(null, "Cannot read file !", "Error !", JOptionPane.ERROR_MESSAGE);
    		}
    		return result.toString();
    	}
    
    	private void saveAs(String dialogTitle) {
    		JFileChooser dialog = new JFileChooser(System.getProperty("Document.this"));
    		dialog.setDialogTitle(dialogTitle);
    		int result = dialog.showSaveDialog(this);
    		if (result != JFileChooser.APPROVE_OPTION)
    			return;
    		file = dialog.getSelectedFile();
    		try (PrintWriter writer = new PrintWriter(file);) {
    			writer.write(textArea.getText());
    			changed = false;
    			setTitle("Editor - " + file.getName());
    		} catch (FileNotFoundException e) {
    			e.printStackTrace();
    		}
    	}
    
    	private void saveFile() {
    		if (changed) {
    			int ans = JOptionPane.showConfirmDialog(null, "The file has changed. You want to save it?", "Save file",
    					JOptionPane.YES_NO_OPTION, JOptionPane.WARNING_MESSAGE);
    			if (ans == JOptionPane.NO_OPTION)
    				return;
    		}
    		if (file == null) {
    			saveAs("Save");
    			return;
    		}
    		String text = textArea.getText();
    		System.out.println(text);
    		try (PrintWriter writer = new PrintWriter(file);) {
    			if (!file.canWrite())
    				throw new Exception("Cannot write file!");
    			writer.write(text);
    			changed = false;
    		} catch (Exception e) {
    			e.printStackTrace();
    		}
    	}
    
    	private void loadFile() {
    		JFileChooser dialog = new JFileChooser(System.getProperty("Document.this"));
    		dialog.setMultiSelectionEnabled(false);
    		try {
    			int result = dialog.showOpenDialog(this);
    			if (result == JFileChooser.CANCEL_OPTION)
    				return;
    			if (result == JFileChooser.APPROVE_OPTION) {
    				if (changed)
    					saveFile();
    				file = dialog.getSelectedFile();
    				textArea.setText(readFile(file));
    				changed = false;
    				setTitle("Editor - " + file.getName());
    			}
    		} catch (Exception e) {
    			e.printStackTrace();
    			JOptionPane.showMessageDialog(null, e, "Error", JOptionPane.ERROR_MESSAGE);
    		}
    	}
    
    	private File file;
    	public boolean changed = false;
    	private boolean toolBarEnable = true;
    
    	RSyntaxTextArea textArea = new RSyntaxTextArea(20, 60);
    
    	JFrame frame = new JFrame("Input Dialog Box Frame");
    	JButton button = new JButton("Show Input Dialog Box");
    	JFileChooser fc = new JFileChooser();
    
    	private JTextArea ta;
    	private int count;
    	private JMenuBar menuBar;
    	private String pad;
    	private JToolBar toolBar;
    	private JMenu file_1;
    	private JMenuItem n;
    	private JMenuItem open;
    	private JMenuItem save;
    	private JMenuItem saveas;
    	private JMenuItem 退出;
    	private JMenu edit;
    	private JMenuItem cut;
    	private JMenuItem copy;
    	private JMenuItem paste;
    	private JMenuItem find;
    	private JMenuItem sall;
    	private JMenu format;
    	private JMenuItem font;
    	private JMenu view;
    	private JMenuItem showstatus;
    	private JMenu help;
    	private JMenuItem about;
    	private JTextField status;
    
    	public Document() {
    
    		super("Text Editor");
    		setSize(600, 600);
    		setLocationRelativeTo(null);
    		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    		textArea.getDocument().addDocumentListener(this);
    
    		Container pane = getContentPane();
    		pane.setLayout(new BorderLayout());
    
    		textArea.setSyntaxEditingStyle(SyntaxConstants.SYNTAX_STYLE_JAVA);
    		textArea.setCodeFoldingEnabled(true);
    		textArea.addCaretListener(new CaretListener() {
    			// Each time the caret is moved, it will trigger the listener and its method
    			// caretUpdate.
    			// It will then pass the event to the update method including the source of the
    			// event (which is our textarea control)
    			public void caretUpdate(CaretEvent e) {
    				JTextArea editArea = (JTextArea) e.getSource();
    
    				// Lets start with some default values for the line and column.
    				int linenum = 1;
    				int columnnum = 1;
    
    				// We create a try catch to catch any exceptions. We will simply ignore such an
    				// error for our demonstration.
    				try {
    					// First we find the position of the caret. This is the number of where the
    					// caret is in relation to the start of the JTextArea
    					// in the upper left corner. We use this position to find offset values (eg what
    					// line we are on for the given position as well as
    					// what position that line starts on.
    					int caretpos = editArea.getCaretPosition();
    					linenum = editArea.getLineOfOffset(caretpos);
    
    					// We subtract the offset of where our line starts from the overall caret
    					// position.
    					// So lets say that we are on line 5 and that line starts at caret position 100,
    					// if our caret position is currently 106
    					// we know that we must be on column 6 of line 5.
    					columnnum = caretpos - editArea.getLineStartOffset(linenum);
    
    					// We have to add one here because line numbers start at 0 for getLineOfOffset
    					// and we want it to start at 1 for display.
    					linenum += 1;
    					columnnum += 1;
    				} catch (Exception ex) {
    				}
    
    				// Once we know the position of the line and the column, pass it to a helper
    				// function for updating the status bar.
    				updateStatus(linenum, columnnum);
    			}
    		});
    
    		RTextScrollPane sp = new RTextScrollPane(textArea);
    		pane.add(sp);
    
    		count = 0;
    		pad = " ";
    		ta = new JTextArea(); // textarea
    
    		menuBar = new JMenuBar();
    		toolBar = new JToolBar();
    		toolBar.setFloatable(false);
    
    		ta.setLineWrap(true);
    		ta.setWrapStyleWord(true);
    
    		setJMenuBar(menuBar);
    
    		file_1 = new JMenu("文件");
    		file_1.setMnemonic('F');
    		menuBar.add(file_1);
    
    		n = new JMenuItem("新建");
    		n.addActionListener(new ActionListener() {
    			public void actionPerformed(ActionEvent e) {
    				newFile();
    			}
    		});
    		n.setMnemonic('N');
    		file_1.add(n);
    
    		open = new JMenuItem("打开");
    		open.addActionListener(new ActionListener() {
    			public void actionPerformed(ActionEvent e) {
    				loadFile();
    
    			}
    		});
    		open.setMnemonic('O');
    		file_1.add(open);
    
    		save = new JMenuItem("保存");
    		save.addActionListener(new ActionListener() {
    			public void actionPerformed(ActionEvent e) {
    				saveFile();
    			}
    		});
    		save.setMnemonic('S');
    		file_1.add(save);
    
    		saveas = new JMenuItem("另存为...");
    		saveas.addActionListener(new ActionListener() {
    			public void actionPerformed(ActionEvent e) {
    				saveAs("另存为...");
    			}
    		});
    		file_1.add(saveas);
    
    		退出 = new JMenuItem("退出");
    		退出.addActionListener(new ActionListener() {
    			public void actionPerformed(ActionEvent e) {
    				if (changed)
    					saveFile();
    
    				System.exit(0);
    			}
    		});
    		退出.setMnemonic('Q');
    		file_1.add(退出);
    
    		edit = new JMenu("编辑");
    		edit.setMnemonic('E');
    		menuBar.add(edit);
    
    		cut = new JMenuItem("剪切");
    		cut.addActionListener(new ActionListener() {
    			public void actionPerformed(ActionEvent e) {
    				textArea.cut();
    			}
    		});
    		cut.setMnemonic('T');
    		edit.add(cut);
    
    		copy = new JMenuItem("复制");
    		copy.addActionListener(new ActionListener() {
    			public void actionPerformed(ActionEvent e) {
    				textArea.copy();
    			}
    		});
    		copy.setMnemonic('C');
    		edit.add(copy);
    
    		paste = new JMenuItem("粘贴");
    		paste.addActionListener(new ActionListener() {
    			public void actionPerformed(ActionEvent e) {
    				textArea.paste();
    			}
    		});
    		paste.setMnemonic('P');
    		edit.add(paste);
    
    		find = new JMenuItem("查找");
    		find.addActionListener(this);
    		find.setMnemonic('F');
    		edit.add(find);
    
    		sall = new JMenuItem("选择全部");
    		sall.addActionListener(new ActionListener() {
    			public void actionPerformed(ActionEvent e) {
    				textArea.selectAll();
    			}
    		});
    		sall.setMnemonic('A');
    		edit.add(sall);
    
    		format = new JMenu("格式");
    		menuBar.add(format);
    
    		font = new JMenuItem("字体");
    		font.addActionListener(new ActionListener() {
    			public void actionPerformed(ActionEvent e) {
    				JFontDialog fontDialog = new JFontDialog();
    				fontDialog.setVisible(true);
    				Font selectedFont = fontDialog.getFont();
    				System.out.println(selectedFont.toString());
    				textArea.setFont(selectedFont);
    
    			}
    		});
    		format.add(font);
    
    		view = new JMenu("查看");
    		menuBar.add(view);
    
    		showstatus = new JMenuItem("状态栏");
    		showstatus.addActionListener(new ActionListener() {
    			public void actionPerformed(ActionEvent e) {
    				if (toolBarEnable == true) {
    					toolBar.setVisible(false);
    					toolBarEnable = false;
    
    				} else {
    					toolBar.setVisible(true);
    					toolBarEnable = true;
    				}
    			}
    		});
    		view.add(showstatus);
    
    		help = new JMenu("帮助");
    		menuBar.add(help);
    
    		about = new JMenuItem("关于");
    		about.addActionListener(new ActionListener() {
    			public void actionPerformed(ActionEvent e) {
    				JOptionPane.showMessageDialog(null, "Text Editor in Java. \n\n 2021", "Text Editor", 1);
    			}
    		});
    		help.add(about);
    
    		pane.add(toolBar, BorderLayout.SOUTH);
    
    		status = new JTextField();
    		status.setText("行: 1 列: 1");
    		toolBar.add(status);
    
    		setVisible(true);
    
    	}
    
    	void writetofile(File ff) throws Exception {
    		FileWriter fw = new FileWriter(ff.getAbsoluteFile());
    		BufferedWriter bw = new BufferedWriter(fw);
    		bw.write(textArea.getText());
    		bw.close();
    	}
    
    	private static void printLines(String name, InputStream ins) throws Exception {
    		String line = null;
    		BufferedReader in = new BufferedReader(new InputStreamReader(ins));
    		while ((line = in.readLine()) != null) {
    			System.out.println(name + " " + line);
    		}
    	}
    
    	private static void runProcess(String command) throws Exception {
    		Process pro = Runtime.getRuntime().exec(command);
    		printLines(command + "\n============================================================\nOUTPUT:\n\n\n\n",
    				pro.getInputStream());
    		printLines(command + " stderr:", pro.getErrorStream());
    		pro.waitFor();
    	}
    
    //	public void actionPerformed(ActionEvent e) {
    //		JMenuItem choice = (JMenuItem) e.getSource();
    //
    //	}
    
    	public static void main(String[] args) {
    
    		new Document();
    	}
    
    	@Override
    	public void insertUpdate(DocumentEvent e) {
    		changed = true;
    	}
    
    	@Override
    	public void removeUpdate(DocumentEvent e) {
    		changed = true;
    	}
    
    	@Override
    	public void changedUpdate(DocumentEvent e) {
    		changed = true;
    	}
    
    	@Override
    	public void actionPerformed(ActionEvent e) {
    		String action = e.getActionCommand();
    		if (action.equals("查找")) {
    			FindDialogDoc find = new FindDialogDoc(this, true);
    			find.showDialog();
    		}
    	}
    
    // This helper function updates the status bar with the line number and column
    // number.
    	private void updateStatus(int linenumber, int columnnumber) {
    		status.setText("行: " + linenumber + " 列: " + columnnumber);
    	}
    
    }

import java.awt.GridLayout;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    import java.awt.event.KeyEvent;
    import java.awt.event.KeyListener;
    import java.util.regex.Matcher;
    import java.util.regex.Pattern;
    
    import javax.swing.JButton;
    import javax.swing.JCheckBox;
    import javax.swing.JDialog;
    import javax.swing.JLabel;
    import javax.swing.JOptionPane;
    import javax.swing.JPanel;
    import javax.swing.JTextField;
    
    @SuppressWarnings("serial")
    public class FindDialogDoc extends JDialog implements ActionListener, KeyListener {
    
    	Document parent;
    	JLabel label;
    	JTextField textField;
    	JCheckBox caseSensitive;
    	JButton find, close;
    	boolean finishedFinding = true;
    	Matcher matcher;
    
    	public FindDialogDoc(Document parent, boolean modal) {
    		super(parent, modal);
    		this.parent = parent;
    		getContentPane().addKeyListener(this);
    		getContentPane().setFocusable(true);
    		initComponents();
    		setTitle("查找");
    		setLocationRelativeTo(parent);
    		pack();
    	}
    
    	public void showDialog() {
    		setVisible(true);
    	}
    
    	private void initComponents() {
    		getContentPane().setLayout(new GridLayout(3, 1));
    		JPanel panel1 = new JPanel();
    		label = new JLabel("查找:");
    		label.setDisplayedMnemonic('F');
    		panel1.add(label);
    		textField = new JTextField(15);
    		panel1.add(textField);
    		label.setLabelFor(textField);
    		getContentPane().add(panel1);
    		JPanel panel2 = new JPanel();
    		caseSensitive = new JCheckBox("大小写敏感");
    		panel2.add(caseSensitive);
    		getContentPane().add(panel2);
    		JPanel panel3 = new JPanel();
    		find = new JButton("查找");
    		close = new JButton("关闭");
    		find.addActionListener(this);
    		close.addActionListener(this);
    		panel3.add(find);
    		panel3.add(close);
    		getContentPane().add(panel3);
    		textField.addKeyListener(this);
    		find.addKeyListener(this);
    		close.addKeyListener(this);
    		caseSensitive.addKeyListener(this);
    	}
    
    	private void find(String pattern) {
    		if (!finishedFinding) {
    			if (matcher.find()) {
    				int selectionStart = matcher.start();
    				int selectionEnd = matcher.end();
    				parent.textArea.moveCaretPosition(matcher.start());
    				parent.textArea.select(selectionStart, selectionEnd);
    			} else {
    				finishedFinding = true;
    				JOptionPane.showMessageDialog(this, "已到达文件末尾", "文件末尾", JOptionPane.INFORMATION_MESSAGE);
    				// closeDialog();
    			}
    		} else {
    			matcher = Pattern.compile(pattern).matcher(parent.textArea.getText());
    			finishedFinding = false;
    			find(pattern);
    		}
    	}
    
    	@Override
    	public void actionPerformed(ActionEvent e) {
    		String cmd = e.getActionCommand();
    		if (cmd.equals("查找")) {
    			String input = textField.getText();
    			StringBuilder pattern = new StringBuilder();
    			if (!caseSensitive.isSelected()) {
    				pattern.append("(?i)");
    			}
    			pattern.append(input);
    			find(pattern.toString());
    		} else if (cmd.equals("关闭")) {
    			closeDialog();
    		}
    	}
    
    	private void closeDialog() {
    		setVisible(false);
    		dispose();
    	}
    
    	@Override
    	public void keyTyped(KeyEvent e) {
    	}
    
    	@Override
    	public void keyPressed(KeyEvent e) {
    		// System.out.println(e.getKeyCode());
    		if (e.getKeyCode() == KeyEvent.VK_ESCAPE) {
    			closeDialog();
    		}
    	}
    
    	@Override
    	public void keyReleased(KeyEvent e) {
    	}
    
    }

import java.awt.Dimension;
    import java.awt.FlowLayout;
    import java.awt.Font;
    import java.awt.GraphicsEnvironment;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    import java.awt.event.KeyAdapter;
    import java.awt.event.KeyEvent;
    import java.util.ArrayList;
    import java.util.List;
    import java.util.Set;
    import java.util.TreeSet;
    import javax.swing.JButton;
    import javax.swing.JDialog;
    import javax.swing.JLabel;
    import javax.swing.JList;
    import javax.swing.JPanel;
    import javax.swing.JScrollPane;
    import javax.swing.JTextField;
    import javax.swing.ListSelectionModel;
    import javax.swing.border.TitledBorder;
    import javax.swing.event.ListSelectionEvent;
    import javax.swing.event.ListSelectionListener;
    
    /**
     *
     * @author PANKAJ
     */
    public class JFontDialog extends JDialog {
    
    	private static final long serialVersionUID = -6437493905392469749L;
    	private Font font;
    	private Font[] fonts;
    	private JButton okButton;
    	private JButton cancelButton;
    	private JLabel previewLabel;
    	private JList familyList;
    	private JTextField familyTextField;
    	private JList styleList;
    	private JTextField styleTextField;
    	private JList sizeList;
    	private JTextField sizeTextField;
    
    	public JFontDialog() {
    		this(new Font("Arial", 0, 12));
    	}
    
    	public JFontDialog(Font font) {
    		this("Font dialog", font);
    	}
    
    	public JFontDialog(String title, Font font) {
    		super.setTitle(title);
    		this.font = font;
    		this.init();
    	}
    
    	public void setFont(Font font) {
    		this.font = font;
    	}
    
    	public Font getFont() {
    		return this.font;
    	}
    
    	private void init() {
    		this.fonts = GraphicsEnvironment.getLocalGraphicsEnvironment().getAllFonts();
    		this.setLayout(new FlowLayout());
    		this.setMinimumSize(new Dimension(400 + 80, 350));
    		this.setDefaultCloseOperation(DISPOSE_ON_CLOSE);
    		this.setModal(true);
    		this.setLocationByPlatform(true);
    		this.add(this.getFamilyPanel());
    		this.add(this.getStylePanel());
    		this.add(this.getSizePanel());
    		this.add(this.getPreviewPanel());
    		this.add(this.getButtonPanel());
    		this.eventHandling();
    	}
    
    	private JPanel getFamilyPanel() {
    		JPanel familyPanel = new JPanel();
    		familyPanel.setPreferredSize(new Dimension(200 + 10, 200 + 10));
    		familyPanel.setBorder(new TitledBorder("Font:"));
    		familyPanel.setLayout(new FlowLayout());
    		familyPanel.add(this.getFamilyTextBox());
    		familyPanel.add(this.getFamilyScrooledList());
    		return familyPanel;
    	}
    
    	private JTextField getFamilyTextBox() {
    		familyTextField = new JTextField();
    		familyTextField.setPreferredSize(new Dimension(200, 20));
    		familyTextField.setText(this.getFont().getFamily());
    		familyTextField.setEditable(false);
    		return familyTextField;
    	}
    
    	private JScrollPane getFamilyScrooledList() {
    		familyList = new JList(this.getFamily());
    		JScrollPane fontPane = new JScrollPane();
    		fontPane.setViewportView(familyList);
    		fontPane.setPreferredSize(new Dimension(200, 152));
    		familyList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
    		familyList.setSelectedValue(this.getFont().getFamily(), true);
    
    		return fontPane;
    	}
    
    	private JPanel getStylePanel() {
    		JPanel stylePanel = new JPanel();
    		stylePanel.setPreferredSize(new Dimension(150 + 10, 200 + 10));
    		stylePanel.setBorder(new TitledBorder("Style:"));
    		stylePanel.setLayout(new FlowLayout());
    		stylePanel.add(this.getStyleTextBox());
    		stylePanel.add(this.getStyleScrooledList());
    		return stylePanel;
    	}
    
    	private JTextField getStyleTextBox() {
    		styleTextField = new JTextField();
    		styleTextField.setPreferredSize(new Dimension(150, 20));
    		String style = this.calculateStyle(this.getFont(), this.getFont().getFamily());
    		if (style.equals("")) {
    			style = "Plain";
    		}
    		styleTextField.setText(style);
    		styleTextField.setEditable(false);
    		return styleTextField;
    	}
    
    	private JScrollPane getStyleScrooledList() {
    		styleList = new JList(this.getFontStyles(this.getFont().getFamily()));
    		JScrollPane stylePane = new JScrollPane();
    		stylePane.setViewportView(styleList);
    		stylePane.setPreferredSize(new Dimension(150, 152));
    		styleList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
    		String style = this.calculateStyle(this.getFont(), this.getFont().getFamily());
    		if (style.equals("")) {
    			style = "Plain";
    		}
    		styleList.setSelectedValue(style, true);
    
    		return stylePane;
    	}
    
    	private JPanel getSizePanel() {
    		JPanel sizePanel = new JPanel();
    		sizePanel.setPreferredSize(new Dimension(50 + 10, 200 + 10));
    		sizePanel.setBorder(new TitledBorder("Size:"));
    		sizePanel.setLayout(new FlowLayout());
    		sizePanel.add(this.getSizeTextBox());
    		sizePanel.add(this.getSizeScrooledList());
    		return sizePanel;
    	}
    
    	private JTextField getSizeTextBox() {
    		sizeTextField = new JTextField();
    		sizeTextField.setPreferredSize(new Dimension(50, 20));
    		Integer size = new Integer(this.getFont().getSize());
    		sizeTextField.setText(size.toString());
    		return sizeTextField;
    	}
    
    	private JScrollPane getSizeScrooledList() {
    		sizeList = new JList(this.getFontSize());
    		JScrollPane sizePane = new JScrollPane();
    		sizePane.setViewportView(sizeList);
    		sizePane.setPreferredSize(new Dimension(50, 152));
    		sizeList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
    		sizeList.setSelectedValue(new Integer(this.getFont().getSize()), true);
    		return sizePane;
    	}
    
    	private JPanel getPreviewPanel() {
    		JPanel previewPanel = new JPanel();
    		previewPanel.setBorder(new TitledBorder("Preview"));
    		previewPanel.setPreferredSize(new Dimension(355, 90));
    		previewPanel.setLayout(new FlowLayout());
    		previewPanel.add(this.getPreviewLabel());
    		return previewPanel;
    	}
    
    	private JLabel getPreviewLabel() {
    		previewLabel = new JLabel("ABC abc 123");
    		previewLabel.setPreferredSize(new Dimension(350, 80));
    		previewLabel.setHorizontalAlignment(JLabel.CENTER);
    		previewLabel.setFont(this.getFont());
    		return previewLabel;
    	}
    
    	private JPanel getButtonPanel() {
    		JPanel buttonPanel = new JPanel();
    		buttonPanel.setPreferredSize(new Dimension(80, 60));
    		buttonPanel.setLayout(new FlowLayout());
    		((FlowLayout) buttonPanel.getLayout()).setVgap(5);
    		buttonPanel.add(this.getOKButton());
    		buttonPanel.add(this.getCancelButton());
    		return buttonPanel;
    	}
    
    	private JButton getOKButton() {
    		okButton = new JButton("OK");
    		okButton.setPreferredSize(new Dimension(80, 25));
    
    		return okButton;
    	}
    
    	private JButton getCancelButton() {
    		cancelButton = new JButton("Cancel");
    		cancelButton.setPreferredSize(new Dimension(80, 25));
    
    		return cancelButton;
    	}
    
    	private String[] getFontStyles(String fontFamily) {
    		List fontStyles = new ArrayList();
    		for (int i = 0; i < fonts.length; i++) {
    			Font f = fonts[i];
    			if (f.getFamily().equals(fontFamily)) {
    				if (f.getFontName().length() == fontFamily.length()) {
    					fontStyles.add("Plain");
    					continue;
    				}
    				fontStyles.add(this.calculateStyle(f, fontFamily));
    			}
    		}
    		String[] str = new String[fontStyles.size()];
    		for (int i = 0; i < str.length; i++) {
    			str[i] = fontStyles.get(i).toString();
    		}
    		return str;
    	}
    
    	private String[] getFamily() {
    		Set stylesSet = new TreeSet();
    		for (int i = 0; i < this.fonts.length; i++) {
    			stylesSet.add(this.fonts[i].getFamily());
    		}
    		Object[] obj = stylesSet.toArray();
    		String[] str = new String[obj.length];
    		for (int i = 0; i < str.length; i++) {
    			str[i] = obj[i].toString();
    		}
    		return str;
    	}
    
    	private String calculateStyle(Font font, String fontFamily) {
    		StringBuffer style = new StringBuffer(font.getFontName().replace(fontFamily, ""));
    		if (style.toString().startsWith(" ")) {
    			style.replace(0, 1, "");
    		}
    		return style.toString();
    	}
    
    	private Integer[] getFontSize() {
    		Integer[] fs = new Integer[25];
    		int n = 6;
    		for (int i = 0; i < fs.length; i++) {
    			n = n + 2;
    			fs[i] = new Integer(n);
    		}
    		return fs;
    	}
    
    	private void updateFont() {
    		String family = this.familyTextField.getText();
    		String style = this.styleTextField.getText();
    		Integer size = Integer.valueOf(this.sizeTextField.getText());
    		if (!style.equals("Plain") && !style.contains(".")) {
    			family = family + " " + style;
    		} else if (!style.equals("Plain") && style.contains(".")) {
    			family = family + "." + style;
    		}
    		this.font = new Font(family, 0, size.intValue());
    		this.previewLabel.setFont(this.font);
    	}
    
    	private void eventHandling() {
    		this.familyList.addListSelectionListener(new ListSelectionListener() {
    			public void valueChanged(ListSelectionEvent e) {
    				String selectedFamily = familyList.getSelectedValue().toString();
    				familyTextField.setText(selectedFamily);
    				styleList.setListData(getFontStyles(selectedFamily));
    				styleList.setSelectedIndex(0);
    			}
    		});
    		this.styleList.addListSelectionListener(new ListSelectionListener() {
    			public void valueChanged(ListSelectionEvent e) {
    				String selectedStyle = styleList.getSelectedValue().toString();
    				styleTextField.setText(selectedStyle);
    				updateFont();
    			}
    		});
    		this.sizeList.addListSelectionListener(new ListSelectionListener() {
    			public void valueChanged(ListSelectionEvent e) {
    				Integer selectedSize = new Integer(sizeList.getSelectedValue().toString());
    				sizeTextField.setText(selectedSize.toString());
    				updateFont();
    			}
    		});
    		this.sizeTextField.addKeyListener(new KeyAdapter() {
    			public void keyTyped(KeyEvent evt) {
    				if (evt.getKeyChar() < '0' || evt.getKeyChar() > '9') {
    					evt.consume();
    				}
    			}
    
    			public void keyReleased(KeyEvent evt) {
    				String value = sizeTextField.getText();
    				evt.consume();
    				if (value.equals("") || value.equals("0")) {
    					sizeTextField.setText("8");
    				}
    				sizeList.setSelectedValue(Integer.valueOf(value), true);
    				updateFont();
    			}
    		});
    		this.okButton.addActionListener(new ActionListener() {
    			public void actionPerformed(ActionEvent e) {
    				setFont(previewLabel.getFont());
    				dispose();
    			}
    		});
    		this.cancelButton.addActionListener(new ActionListener() {
    			public void actionPerformed(ActionEvent e) {
    				dispose();
    			}
    		});
    	}
    }

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