IDE (布局好看)
- 编译原理课程设计作业，源码在网盘里，就不往外放了
- 这里显示关键源码
背景颜色
- pane.setFont(new Font(“YaHei Consolas Hybrid”, Font.PLAIN, 18));
- pane.setBackground(Color.darkGray);
- pane.setCaretColor(Color.white); // 设置鼠标的颜色为白色
体系结构结构
src
com.by5.editor
com.by5.editor.commons
com.by5.editor.exception
com.by5.editor.frame
com.by5.editor.handler.add
com.by5.editor.tree
com.by5.editor.util
public class EditorFrame extends JFrame {
private final int WIDTH = 800;
private final int HEIGHT = 600;
static JSplitPane editorSplitPane;
static JScrollPane infoPane;
static JTextArea infoArea;
private Action fileNew = new AbstractAction("新建", new ImageIcon("images/newFile.gif")) {
public void actionPerformed(ActionEvent e) {
newFile();
}
};
public EditorFrame(TreeCreator treeCreator) {
super();
this.treeCreator = treeCreator;
this.setTitle("IDE");
}
public void initFrame(WorkSpace space) {
this.workSpace = space;
addListeners();
}
private void addListeners(){
fileMenu.add(fileNew).setAccelerator(KeyStroke.getKeyStroke('N', InputEvent.CTRL_MASK));
fileMenu.add(exit);
toolBar.add(fileNew).setToolTipText("新建");
toolBar.add(open).setToolTipText("打开");
toolBar.add(save).setToolTipText("保存");
toolBar.addSeparator();
toolBar.add(copy).setToolTipText("复制");
toolBar.add(cut).setToolTipText("剪切");
toolBar.add(paste).setToolTipText("粘贴");
toolBar.addSeparator();
toolBar.add(build).setToolTipText("编译");
toolBar.add(run).setToolTipText("运行");
toolBar.add(drawtree).setToolTipText("语法树");
}
}
I/O
file = new File(workSpace.getFolder().toString() + "/" + object.toString());
FileInputStream fis = new FileInputStream(file);
BufferedReader br = new BufferedReader(new InputStreamReader(fis));
text = "";
int ch;
while ((ch = br.read()) != -1) {
text += (char)ch;
}
System.out.println(text);
pane.setText(text);
pane.setEditable(true);
pane.setCaretColor(Color.white);
pane.setVisible(true);
FileOutputStream fos = new FileOutputStream(file);
BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(fos));
text = pane.getText();
bw.write(text);
bw.close();
try {
dir = workSpace.getFolder().toString();
String command = "lexyan" + " " + file.toString();
Process process = Runtime.getRuntime().exec(command);
ArrayList<String> processList = new ArrayList<String>();
try{
BufferedReader input = new BufferedReader(new InputStreamReader(process.getInputStream()));
String line = "";
while((line = input.readLine()) != null){
processList.add(line);
}
input.close();
} catch(Exception e1) {
e1.printStackTrace();
}
for(String line : processList){
System.out.println(line);
}
file = new File(workSpace.getFolder().toString() + "/" + "test.asm");
FileInputStream fis = new FileInputStream(file);
BufferedReader br = new BufferedReader(new InputStreamReader(fis));
text = "";
int ch;
while ((ch = br.read()) != -1) {
text += (char)ch;
}
System.out.println(text);
JTextPane infoPane = new JTextPane();
infoPane.setText(text);
infoPane.setEditable(true);
infoPane.setVisible(true);
infoPane.getDocument().addDocumentListener(new Highlighting(infoPane));
infoArea.setBackground(Color.white);
infoArea.setText(text);
infoArea.add(infoPane, CENTER_ALIGNMENT);
infoArea.setVisible(true);
} catch (IOException e1) {
e1.printStackTrace();
}
ImageUtil
package com.by5.editor.util;
import java.awt.Image;
import java.io.File;
import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
public class ImageUtil {
public static String FOLDER_CLOSE = "images/folder-close.gif";
public static String FOLDER_OPEN = "images/folder-open.gif";
public static String FILE = "images/file.gif";
public static Image getImage(String path) {
try {
return ImageIO.read(new File(path));
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
public static ImageIcon getImageIcon(String path) {
return new ImageIcon(getImage(path));
}
}
FileUtil
package com.by5.editor.exception;
public class FileException extends RuntimeException {
public FileException(String message) {
super(message);
}
}
package com.by5.editor.util;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import com.by5.editor.exception.FileException;
public class FileUtil {
public static String readFile(File file){
StringBuffer result = new StringBuffer();
try{
FileInputStream fis = new FileInputStream(file);
String content = null;
byte[] arr = new byte[1024];
int readLength;
while ((readLength = fis.read(arr)) > 0){
content = new String(arr,0,readLength);
result.append(content);
}
fis.close();
}
catch(IOException e){
throw new FileException("reaad '"+file.getAbsolutePath()+"'file error");
}
return result.toString();
}
}
小型(单区域)IDE 功能挺全的，编译，运行，行号，高亮
- 源自liangzhenduo0608/Editor
- 原来是一个.java文件，我分为了4个，更加直观
- 可以将四个类放到一个文件里，就可以运行
Editor.java
import javax.swing.*
import javax.swing.border.AbstractBorder
import javax.swing.event.*
import javax.swing.text.*
import java.awt.*
import java.awt.event.*
import java.io.*
import java.util.HashSet
import java.util.Set
import java.util.regex.Matcher
import java.util.regex.Pattern
public class Editor extends WindowAdapter implements ActionListener {
static JFrame frame
static JTextPane pane
String fil = null, dir = null, text = null
JButton fdn_btn, fdl_btn, fnd_cnl
static JButton fok_btn
static JButton fcc_btn
JButton rpl_btn
JButton rll_btn
JButton rpl_cnl
JButton b3
JButton b4
JDialog fnd_dlg, rpl_dlg
int index
JTextField target, result
boolean edited = false
public Editor() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName())
} catch (Exception e) {
//
}
JMenuBar menubar
JMenu file, edit, build, setting, help
JMenuItem f_new, f_opn, f_sve, f_sva, f_ext,
e_und, e_red, e_cut, e_cpy, e_pst, e_dlt, e_fnd, e_rpl,
b_cpl, b_run,
s_fnt,
h_vhp, h_abt
frame = new JFrame()
frame.setSize(800, 600)
frame.addWindowListener(this)
frame.setTitle("Text Editor")
menubar = new JMenuBar()
//menubar.setFont(new Font("Times New Roman",Font.BOLD,18))
//file
file = new JMenu("File")
f_new = new JMenuItem("New")
f_new.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_N, InputEvent.CTRL_MASK))
f_opn = new JMenuItem("Open")
f_opn.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_O, InputEvent.CTRL_MASK))
f_sve = new JMenuItem("Save")
f_sve.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S, InputEvent.CTRL_MASK))
f_sva = new JMenuItem("Save As")
f_ext = new JMenuItem("Exit")
f_new.addActionListener(this)
f_opn.addActionListener(this)
f_sve.addActionListener(this)
f_sva.addActionListener(this)
f_ext.addActionListener(this)
file.add(f_new)
file.add(f_opn)
file.add(f_sve)
file.add(f_sva)
file.addSeparator()
file.add(f_ext)
menubar.add(file)
//edit
edit = new JMenu("Edit")
e_und = new JMenuItem("Undo")
e_und.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_Z, InputEvent.CTRL_MASK))
e_red = new JMenuItem("Redo")
e_red.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_Y, InputEvent.CTRL_MASK))
e_cut = new JMenuItem("Cut")
e_cut.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_X, InputEvent.CTRL_MASK))
e_cut.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
pane.cut()
}
})
e_cpy = new JMenuItem("Copy")
e_cpy.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_C, InputEvent.CTRL_MASK))
e_cpy.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
pane.copy()
}
})
e_pst = new JMenuItem("Paste")
e_pst.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_V, InputEvent.CTRL_MASK))
e_pst.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
pane.paste()
}
})
e_dlt = new JMenuItem("Delete")
e_dlt.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_DELETE, 0))
e_dlt.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
//pane.
}
})
e_fnd = new JMenuItem("Find")
e_rpl = new JMenuItem("Replace")
e_und.addActionListener(this)
e_red.addActionListener(this)
e_dlt.addActionListener(this)
e_fnd.addActionListener(this)
e_rpl.addActionListener(this)
edit.add(e_und)
edit.add(e_red)
edit.addSeparator()
edit.add(e_cut)
edit.add(e_cpy)
edit.add(e_pst)
edit.add(e_dlt)
edit.addSeparator()
edit.add(e_fnd)
edit.add(e_rpl)
menubar.add(edit)
//build
build = new JMenu("Build")
b_cpl = new JMenuItem("Compile")
b_run = new JMenuItem("Run")
b_cpl.addActionListener(this)
b_run.addActionListener(this)
build.add(b_cpl)
build.add(b_run)
menubar.add(build)
//setting
setting = new JMenu("Setting")
s_fnt = new JMenuItem("Font")
s_fnt.addActionListener(this)
setting.add(s_fnt)
menubar.add(setting)
//help
help = new JMenu("Help")
h_vhp = new JMenuItem("View Help")
h_abt = new JMenuItem("About")
h_vhp.addActionListener(this)
h_abt.addActionListener(this)
help.add(h_vhp)
help.addSeparator()
help.add(h_abt)
menubar.add(help)
frame.setJMenuBar(menubar)
pane = new JTextPane()
pane.addKeyListener(new KeyAdapter() {
public void keyTyped(KeyEvent e) {
edited = true
}
})
pane.getDocument().addDocumentListener(new Highlighting(pane))
pane.setFont(new Font("Consolas", Font.PLAIN, 14))
pane.setEditable(false)
pane.setVisible(false)
pane.setBorder(new LineNumberBorder())
frame.add(pane)
frame.add(new JScrollPane(pane))
frame.setVisible(true)
}
public void actionPerformed(ActionEvent event) {
String str = event.getActionCommand()
if (str.equals("New")) {
frame.setTitle("Untitled - Text Editor")
fil = ""
pane.setText(null)
pane.setEditable(true)
pane.setVisible(true)
}
if (str.equals("Open")) {
FileDialog dialog = new FileDialog(frame, "Open", FileDialog.LOAD)
dialog.setVisible(true)
fil = dialog.getFile()
dir = dialog.getDirectory()
if (!fil.equals("")) {
try {
frame.setTitle(fil + " - Text Editor")
FileInputStream fis = new FileInputStream(new File(dir, fil))
BufferedReader br = new BufferedReader(new InputStreamReader(fis, "GBK"))
text = ""
int ch
while ((ch = br.read()) != -1) {
text += (char)ch
}
pane.setText(text)
pane.setEditable(true)
pane.setVisible(true)
} catch (IOException e) {
//e.printStackTrace()
}
}
}
if (str.equals("Save")) {
FileWriter fos
text = pane.getText()
if (fil.equals("")) {
FileDialog dialog = new FileDialog(frame, "SELECT", FileDialog.SAVE)
dialog.setVisible(true)
fil = dialog.getFile()
dir = dialog.getDirectory()
try {
fos = new FileWriter(new File(dir, fil))
fos.write(text, 0, text.length())
fos.close()
frame.setTitle(fil + " - Text Editor")
} catch (IOException e) {
//e.printStackTrace()
}
} else
try {
fos = new FileWriter(new File(dir, fil))
fos.write(text, 0, text.length())
fos.close()
} catch (IOException e) {
//e.printStackTrace()
}
}
if (str.equals("Save As")) {
FileDialog dialog = new FileDialog(frame, "Save As", FileDialog.SAVE)
dialog.setVisible(true)
fil = dialog.getFile()
dir = dialog.getDirectory()
text = pane.getText()
try {
FileWriter fos = new FileWriter(new File(dir, fil))
fos.write(text, 0, text.length())
fos.close()
frame.setTitle(fil + " - Text Editor")
} catch (IOException e) {
//e.printStackTrace()
}
}
if (str.equals("Exit")) {
System.exit(0)
}
if (str.equals("Find")) {
index = 0
fnd_dlg = new JDialog()
fnd_dlg.setTitle("Find")
fnd_dlg.setSize(320, 100)
fnd_dlg.setLocation(100, 100)
fnd_dlg.addWindowListener(this)
JPanel fnd_pnl = new JPanel()
JLabel fnd_lbl = new JLabel("Find what:")
fnd_pnl.add(fnd_lbl)
target = new JTextField(32)
fnd_pnl.add(target)
fdn_btn = new JButton("Find Next")
fdn_btn.addActionListener(this)
fnd_pnl.add(fdn_btn)
fdl_btn = new JButton("Find All")
fdl_btn.addActionListener(this)
fnd_pnl.add(fdl_btn)
fnd_cnl = new JButton("Cancel")
fnd_cnl.addActionListener(this)
fnd_pnl.add(fnd_cnl)
fnd_dlg.add(fnd_pnl)
fnd_dlg.setVisible(true)
}
if (str.equals("Replace")) {
index = 0
rpl_dlg = new JDialog()
rpl_dlg.setTitle("Replace")
rpl_dlg.setSize(320, 128)
rpl_dlg.addWindowListener(this)
Panel rpl_pnl = new Panel()
JLabel fnd_lbl = new JLabel("Find what: ")
rpl_pnl.add(fnd_lbl)
target = new JTextField(32)
rpl_pnl.add(target)
JLabel rpl_lbl = new JLabel("Replace with:")
rpl_pnl.add(rpl_lbl)
result = new JTextField(32)
rpl_pnl.add(result)
fdn_btn = new JButton("Find Next")
fdn_btn.addActionListener(this)
rpl_pnl.add(fdn_btn)
rll_btn = new JButton("Replace All")
rll_btn.addActionListener(this)
rpl_pnl.add(rll_btn)
rpl_cnl = new JButton("Cancel")
rpl_cnl.addActionListener(this)
rpl_pnl.add(rpl_cnl)
rpl_dlg.add(rpl_pnl)
rpl_dlg.setVisible(true)
}
if (str.equals("Compile")) {
try {
Process process = Runtime.getRuntime().exec("javac " + dir + fil)
Frame fc = new Frame()
fc.setSize(200, 200)
fc.addWindowListener(this)
InputStream in = process.getErrorStream()
int chc
String strc = ""
while ((chc = in.read()) != -1) {
strc = strc + (char)chc
}
if (strc.equals(""))
strc = "Process Completed"
TextArea tc = new TextArea(strc)
fc.add(tc)
fc.setVisible(true)
} catch (IOException e) {
//e.printStackTrace()
}
}
if (str.equals("Run")) {
String dosCommand = "cmd /c start cmd /k java "
String location = dir
int position = fil.lastIndexOf(".")
String s2 = fil.substring(0, position)
try {
Process process = Runtime.getRuntime().exec(dosCommand + s2, null, new File(location))
Frame fr = new Frame()
fr.setSize(200, 200)
fr.addWindowListener(this)
InputStream in = process.getErrorStream()
int chr
String strr = ""
while ((chr = in.read()) != -1) {
strr = strr + (char)chr
}
TextArea tr = new TextArea(strr)
fr.add(tr)
fr.setVisible(true)
} catch (IOException er) {
er.printStackTrace()
}
}
if (str.equals("Font")) {
new Fonts()
}
if (str.equals("About")) {
JFrame about = new JFrame()
about.setSize(240, 110)
about.addWindowListener(this)
JPanel panel = new JPanel()
about.setTitle("About")
JLabel l1 = new JLabel("Text Editor Version 1.0")
JLabel l2 = new JLabel("Developed by Zhenduo Liang")
JLabel l3 = new JLabel("https://liangzhenduo0608.github.io/")
panel.add(l1)
panel.add(l2)
panel.add(l3)
about.add(panel)
about.setVisible(true)
}
if (event.getSource() == fdn_btn) {
String REGEX = target.getText()
String INPUT = pane.getText().substring(0)
INPUT = INPUT.replace("\r", "")
pane.select(INPUT.indexOf(REGEX), INPUT.indexOf(REGEX) + REGEX.length())
}
if (event.getSource() == rll_btn) {
String REGEX = target.getText()
String INPUT = pane.getText()
String REPLACE = result.getText()
Pattern p = Pattern.compile(REGEX)
Matcher m = p.matcher(INPUT)
INPUT = m.replaceAll(REPLACE)
pane.setText(INPUT)
}
if (event.getSource() == fnd_cnl) {
fnd_dlg.dispose()
}
if (event.getSource() == rpl_cnl) {
rpl_dlg.dispose()
}
}
public void windowClosing(WindowEvent e) {
Window w = e.getWindow()
w.dispose()
}
public static void main(String[] args) {
new Editor()
}
}
Fonts.java
import javax.swing.*
import javax.swing.border.AbstractBorder
import javax.swing.event.*
import javax.swing.text.*
import java.awt.*
import java.awt.event.*
import java.io.*
import java.util.HashSet
import java.util.Set
import java.util.regex.Matcher
import java.util.regex.Pattern
class Fonts implements ActionListener {
final JDialog fontDialog
final JTextField tfFont, tfSize, tfStyle
final int fontStyleConst[] = { Font.PLAIN, Font.ITALIC, Font.BOLD, Font.BOLD + Font.ITALIC }
final JList listStyle, listFont, listSize
JLabel sample
public Fonts() {
fontDialog = new JDialog(Editor.frame, "Font", true)
Container con = fontDialog.getContentPane()
con.setLayout(new FlowLayout(FlowLayout.LEFT))
Font currentFont = Editor.pane.getFont()
JLabel lblFont = new JLabel("Font:")
lblFont.setPreferredSize(new Dimension(140, 20))
JLabel lblStyle = new JLabel("Font Style:")
lblStyle.setPreferredSize(new Dimension(80, 20))
JLabel lblSize = new JLabel("Size:")
lblSize.setPreferredSize(new Dimension(40, 20))
tfFont = new JTextField(22)
tfFont.setText(currentFont.getFontName())
tfFont.selectAll()
tfFont.setPreferredSize(new Dimension(200, 20))
tfStyle = new JTextField(12)
if (currentFont.getStyle() == Font.PLAIN)
tfStyle.setText("Regular")
else if (currentFont.getStyle() == Font.ITALIC)
tfStyle.setText("Italic")
else if (currentFont.getStyle() == Font.BOLD)
tfStyle.setText("Bold")
else if (currentFont.getStyle() == (Font.BOLD + Font.ITALIC))
tfStyle.setText("Bold Italic")
tfFont.selectAll()
tfStyle.setPreferredSize(new Dimension(200, 20))
tfSize = new JTextField(9)
tfSize.setText(currentFont.getSize() + "")
tfSize.selectAll()
tfSize.setPreferredSize(new Dimension(200, 20))
final String fontStyle[] = { "Regular", "Italic", "Bold", "Bold Italic" }
listStyle = new JList(fontStyle)
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment()
final String fontName[] = ge.getAvailableFontFamilyNames()
int defaultFontIndex = 0
for (int i = 0
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(119)
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.ITALIC)
listStyle.setSelectedIndex(2)
else if (currentFont.getStyle() == Font.BOLD)
listStyle.setSelectedIndex(1)
else if (currentFont.getStyle() == (Font.BOLD + Font.ITALIC))
listStyle.setSelectedIndex(3)
listStyle.setVisibleRowCount(7)
listStyle.setFixedCellWidth(77)
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
if (fontSize[i].equals(currentFont.getSize() + "")) {
defaultFontSizeIndex = i
break
}
}
listSize.setSelectedIndex(defaultFontSizeIndex)
listSize.setSelectionMode(ListSelectionModel.SINGLE_SELECTION)
listSize.setVisibleRowCount(7)
listSize.setFixedCellWidth(40)
listSize.setFixedCellHeight(20)
listSize.addListSelectionListener(new ListSelectionListener() {
public void valueChanged(ListSelectionEvent event) {
tfSize.setText(fontSize[listSize.getSelectedIndex()])
tfSize.requestFocus()
tfSize.selectAll()
updateSample()
}
})
Editor.fok_btn = new JButton("OK")
Editor.fok_btn.addActionListener(this)
Editor.fcc_btn = new JButton("Cancel")
Editor.fcc_btn.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
fontDialog.dispose()
}
})
sample = new JLabel("AaBbYyZz")
sample.setHorizontalAlignment(SwingConstants.CENTER)
sample.setPreferredSize(new Dimension(120, 36))
JPanel samplePanel = new JPanel()
samplePanel.setBorder(BorderFactory.createTitledBorder("Sample"))
samplePanel.add(sample)
con.add(lblFont)
con.add(lblStyle)
con.add(lblSize)
con.add(tfFont)
con.add(tfStyle)
con.add(tfSize)
con.add(new JScrollPane(listFont))
con.add(new JScrollPane(listStyle))
con.add(new JScrollPane(listSize))
con.add(samplePanel)
updateSample()
con.add(Editor.fok_btn)
con.add(Editor.fcc_btn)
fontDialog.setSize(310, 360)
fontDialog.setLocation(200, 200)
fontDialog.setResizable(false)
fontDialog.setVisible(true)
}
public void updateSample() {
Font sampleFont = new Font(tfFont.getText(), fontStyleConst[listStyle.getSelectedIndex()],
Integer.parseInt(tfSize.getText()))
sample.setFont(sampleFont)
}
public void actionPerformed(ActionEvent e) {
if (e.getSource() == Editor.fok_btn) {
Font tempFont = new Font(tfFont.getText(), fontStyleConst[listStyle.getSelectedIndex()],
Integer.parseInt(tfSize.getText()))
Editor.pane.setFont(tempFont)
fontDialog.dispose()
}
}
}
Highlighting.java
import javax.swing.*;
import javax.swing.border.AbstractBorder;
import javax.swing.event.*;
import javax.swing.text.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.HashSet;
import java.util.Set;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
class Highlighting implements DocumentListener {
private Set<String> keywords;
private Style keywordStyle;
private Style normalStyle;
public Highlighting(JTextPane pane) {
keywordStyle = ((StyledDocument) pane.getDocument()).addStyle("Keyword_Style", null);
normalStyle = ((StyledDocument) pane.getDocument()).addStyle("Keyword_Style", null);
StyleConstants.setForeground(keywordStyle, Color.BLUE);
StyleConstants.setForeground(normalStyle, Color.BLACK);
keywords = new HashSet<String>() {
{
add("private");
add("protected");
add("public");
add("abstract");
add("class");
add("extends");
add("final");
add("implements");
add("interface");
add("native");
add("new");
add("static");
add("strictfp");
add("synchronized");
add("transient");
add("volatile");
add("break");
add("continue");
add("return");
add("do");
add("while");
add("if");
add("else");
add("for");
add("instanceof");
add("switch");
add("case");
add("default");
add("assert");
add("catch");
add("finally");
add("throw");
add("throws");
add("try");
add("import");
add("package");
add("boolean");
add("byte");
add("char");
add("double");
add("float");
add("int");
add("long");
add("short");
add("null");
add("super");
add("this");
add("void");
add("goto");
}
};
}
public void colouring(StyledDocument doc, int pos, int len) throws BadLocationException {
int start = indexOfWordStart(doc, pos);
int end = indexOfWordEnd(doc, pos + len);
char ch;
while (start < end) {
ch = getCharAt(doc, start);
if (Character.isLetter(ch) || ch == '_') {
start = colouringWord(doc, start);
} else {
SwingUtilities.invokeLater(new ColouringTask(doc, start, 1, normalStyle));
++start;
}
}
}
public int colouringWord(StyledDocument doc, int pos) throws BadLocationException {
int wordEnd = indexOfWordEnd(doc, pos);
String word = doc.getText(pos, wordEnd - pos);
if (keywords.contains(word)) {
SwingUtilities.invokeLater(new ColouringTask(doc, pos, wordEnd - pos, keywordStyle));
} else {
SwingUtilities.invokeLater(new ColouringTask(doc, pos, wordEnd - pos, normalStyle));
}
return wordEnd;
}
public char getCharAt(Document doc, int pos) throws BadLocationException {
return doc.getText(pos, 1).charAt(0);
}
public int indexOfWordStart(Document doc, int pos) throws BadLocationException {
while (pos > 0 && isWordCharacter(doc, pos - 1))
pos--;
return pos;
}
public int indexOfWordEnd(Document doc, int pos) throws BadLocationException {
while (isWordCharacter(doc, pos))
pos++;
return pos;
}
public boolean isWordCharacter(Document doc, int pos) throws BadLocationException {
char ch = getCharAt(doc, pos);
return (Character.isLetter(ch) || Character.isDigit(ch) || ch == '_');
}
@Override
public void changedUpdate(DocumentEvent e) {
}
@Override
public void insertUpdate(DocumentEvent e) {
try {
colouring((StyledDocument) e.getDocument(), e.getOffset(), e.getLength());
} catch (BadLocationException e1) {
e1.printStackTrace();
}
}
@Override
public void removeUpdate(DocumentEvent e) {
try {
colouring((StyledDocument) e.getDocument(), e.getOffset(), 0);
} catch (BadLocationException e1) {
e1.printStackTrace();
}
}
private class ColouringTask implements Runnable {
private StyledDocument doc;
private Style style;
private int pos;
private int len;
public ColouringTask(StyledDocument doc, int pos, int len, Style style) {
this.doc = doc;
this.pos = pos;
this.len = len;
this.style = style;
}
public void run() {
try {
doc.setCharacterAttributes(pos, len, style, true);
} catch (Exception e) {
}
}
}
}
LineNumberBorder.java
import javax.swing.*;
import javax.swing.border.AbstractBorder;
import javax.swing.event.*;
import javax.swing.text.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.HashSet;
import java.util.Set;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class LineNumberBorder extends AbstractBorder {
public LineNumberBorder() {
}
public Insets getBorderInsets(Component c) {
return getBorderInsets(c, new Insets(0, 0, 0, 0));
}
public Insets getBorderInsets(Component c, Insets insets) {
if (c instanceof JTextPane) {
insets.left = 20;
}
return insets;
}
public boolean isBorderOpaque() {
return false;
}
public void paintBorder(Component c, Graphics g, int x, int y, int width, int height) {
java.awt.Rectangle clip = g.getClipBounds();
FontMetrics fm = g.getFontMetrics();
int fontHeight = fm.getHeight();
int ybaseline = y + fm.getAscent();
int startingLineNumber = (clip.y / fontHeight) + 1;
if (startingLineNumber != 1) {
ybaseline = y + startingLineNumber * fontHeight - (fontHeight - fm.getAscent());
}
int yend = ybaseline + height;
if (yend > (y + height)) {
yend = y + height;
}
g.setColor(Color.GRAY);
while (ybaseline < yend) {
String label = padLabel(startingLineNumber, 0, true);
g.drawString(label, 0, ybaseline);
ybaseline += fontHeight;
startingLineNumber++;
}
}
private String padLabel(int lineNumber, int length, boolean addSpace) {
StringBuffer buffer = new StringBuffer();
buffer.append(lineNumber);
for (int count = (length - buffer.length()); count > 0; count--) {
buffer.insert(0, ' ');
}
if (addSpace) {
buffer.append(' ');
}
return buffer.toString();
}
}
