Added renaming (CTRL + R) and field goto (CTRL + G)

README.md

@@ -12,6 +12,8 @@ To open a class, press CTRL + T.
 
 To change settings like auto-computation of stack frames and max locals/stack press CTRL + O.
 
-To go to the method definition of the selected line's invoke-method press CTRL + G.
+To go to the field/method definition in the selected line press CTRL + G.
 
 To (un-)escape unicode characters, press CTRL + U.
+
+To rename a field/method with attention to references in the selected line, press CTRL + R.

src/me/ByteEdit/boxes/OptionBox.java

@@ -1,6 +1,5 @@
 package me.ByteEdit.boxes;
 
-import java.awt.EventQueue;
 import java.awt.Toolkit;
 
 import javax.swing.JCheckBox;
@@ -10,31 +9,11 @@ import javax.swing.UIManager;
 import javax.swing.border.EmptyBorder;
 
 public class OptionBox extends JFrame {
-	
+
 	private JPanel contentPane;
 	public JCheckBox chckbxComputeFrames;
 	public JCheckBox chckbxComputeMax;
-	
+
-	/**
-	 * Launch the application.
-	 */
-	public static void main(String[] args) {
-		EventQueue.invokeLater(new Runnable() {
-			
-			public void run() {
-				try {
-					OptionBox frame = new OptionBox();
-					frame.setVisible(true);
-				} catch (Exception e) {
-					e.printStackTrace();
-				}
-			}
-		});
-	}
-	
-	/**
-	 * Create the frame.
-	 */
 	public OptionBox() {
 		try {
 			UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());

src/me/ByteEdit/boxes/RenameBox.java

@@ -0,0 +1,232 @@
+package me.ByteEdit.boxes;
+
+import java.awt.Toolkit;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.util.LinkedList;
+
+import javax.swing.JButton;
+import javax.swing.JFrame;
+import javax.swing.JLabel;
+import javax.swing.JOptionPane;
+import javax.swing.JPanel;
+import javax.swing.JTextField;
+import javax.swing.border.EmptyBorder;
+
+import org.objectweb.asm.tree.AbstractInsnNode;
+import org.objectweb.asm.tree.ClassNode;
+import org.objectweb.asm.tree.FieldInsnNode;
+import org.objectweb.asm.tree.FieldNode;
+import org.objectweb.asm.tree.MethodInsnNode;
+import org.objectweb.asm.tree.MethodNode;
+
+import me.ByteEdit.edit.Disassembler;
+import me.ByteEdit.main.Main;
+import me.ByteEdit.utils.ClassUtil;
+import me.ByteEdit.utils.UnicodeUtils;
+
+public class RenameBox extends JFrame {
+
+	private JPanel contentPane;
+	public JTextField txtName;
+	public JTextField txtDesc;
+
+	public String className;
+	public String name;
+	public String desc;
+
+	public RenameBox() {
+		setResizable(false);
+		setTitle("Rename");
+		setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);
+		setBounds((int) (Toolkit.getDefaultToolkit().getScreenSize().getWidth() / 2 - 225),
+				(int) (Toolkit.getDefaultToolkit().getScreenSize().getHeight() / 2 - 150), 450, 300);
+		contentPane = new JPanel();
+		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
+		setContentPane(contentPane);
+		contentPane.setLayout(null);
+
+		JLabel lblName = new JLabel("Name");
+		lblName.setBounds(10, 11, 33, 14);
+		contentPane.add(lblName);
+
+		JLabel lblDesc = new JLabel("Desc");
+		lblDesc.setBounds(10, 36, 33, 14);
+		contentPane.add(lblDesc);
+
+		txtName = new JTextField();
+		txtName.setBounds(53, 8, 381, 20);
+		contentPane.add(txtName);
+		txtName.setColumns(10);
+
+		txtDesc = new JTextField();
+		txtDesc.setColumns(10);
+		txtDesc.setBounds(53, 36, 381, 20);
+		contentPane.add(txtDesc);
+
+		JButton btnRename = new JButton("Rename");
+		btnRename.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				if (className == null) {
+					JOptionPane.showMessageDialog(null, "ClassName not set!", "Error!", JOptionPane.ERROR_MESSAGE);
+					return;
+				}
+				if (name == null) {
+					JOptionPane.showMessageDialog(null, "Name not set!", "Error!", JOptionPane.ERROR_MESSAGE);
+					return;
+				}
+				if (desc == null) {
+					JOptionPane.showMessageDialog(null, "Desc not set!", "Error!", JOptionPane.ERROR_MESSAGE);
+					return;
+				}
+				ClassNode clazz = Main.classNodes.get(className.replace("/", ".") + ".class");
+				if (clazz == null) {
+					JOptionPane.showMessageDialog(null, "ClassNode not found!", "Error!", JOptionPane.ERROR_MESSAGE);
+					return;
+				}
+				String newName = UnicodeUtils.unescape(txtName.getText());
+				String newDesc = UnicodeUtils.unescape(txtDesc.getText());
+				if (ClassUtil.isObjectClassMethod(newName, newDesc, true)) {
+					JOptionPane.showMessageDialog(null, "Invalid name!", "Error!", JOptionPane.ERROR_MESSAGE);
+					return;
+				}
+				if (desc.startsWith("(")) {
+					if (newDesc.startsWith("(")) { // method
+						ClassNode lastHit = clazz;
+						while (clazz != null && clazz.superName != null) {
+							ClassNode tmp = Main.classNodes.get(clazz.superName.replace("/", ".") + ".class");
+							if (tmp != null) {
+								boolean found = false;
+								for (MethodNode mn : clazz.methods) {
+									if (mn.name.equals(name) && mn.desc.equals(desc)) {
+										lastHit = clazz;
+										clazz = tmp;
+										found = true;
+										break;
+									}
+								}
+								if (!found) {
+									clazz = tmp;
+									lastHit = null;
+								}
+							} else {
+								break;
+							}
+						}
+						if (lastHit != null) {
+							clazz = lastHit;
+						}
+						LinkedList<MethodNode> methodsToRename = new LinkedList<>();
+						LinkedList<MethodInsnNode> minsToRename = new LinkedList<>();
+						for (ClassNode cn : Main.classNodes.values()) {
+							boolean extendsMyClass = cn == clazz;
+							if (!extendsMyClass) {
+								ClassNode checkCN = cn;
+								while (checkCN != null && checkCN.superName != null) {
+									if (clazz.name.equals(checkCN.superName)) {
+										extendsMyClass = true;
+										break;
+									}
+									ClassNode tmp = Main.classNodes.get(checkCN.superName.replace("/", ".") + ".class");
+									if (tmp != null) {
+										checkCN = tmp;
+									} else {
+										break;
+									}
+								}
+							}
+							for (MethodNode mn : cn.methods) {
+								if (extendsMyClass) {
+									if (mn.name.equals(newName) && mn.desc.equals(newDesc)) {
+										JOptionPane.showMessageDialog(null, "Method already exists in " + cn.name + "!", "Error!",
+												JOptionPane.ERROR_MESSAGE);
+										return;
+									}
+									if (mn.name.equals(name) && mn.desc.equals(desc)) {
+										methodsToRename.add(mn);
+									}
+								}
+								for (AbstractInsnNode ain : mn.instructions.toArray()) {
+									if (ain instanceof MethodInsnNode) {
+										MethodInsnNode min = (MethodInsnNode) ain;
+										if (min.name.equals(name) && min.desc.equals(desc) && min.owner.equals(clazz.name)) {
+											minsToRename.add(min);
+										}
+									}
+								}
+							}
+						}
+						for (MethodNode mn : methodsToRename) {
+							mn.name = newName;
+							mn.desc = newDesc;
+						}
+						for (MethodInsnNode min : minsToRename) {
+							min.name = newName;
+							min.desc = newDesc;
+						}
+					} else {
+						JOptionPane.showMessageDialog(null, "New Desc is not a method desc!", "Error!", JOptionPane.ERROR_MESSAGE);
+						return;
+					}
+				} else {
+					if (!newDesc.startsWith("(")) { // field
+						FieldNode currentFN = null;
+						for (FieldNode fn : clazz.fields) {
+							if (fn.name.equals(newName) && fn.desc.equals(newDesc)) {
+								JOptionPane.showMessageDialog(null, "Field already exists!", "Error!", JOptionPane.ERROR_MESSAGE);
+								return;
+							}
+							if (fn.name.equals(name) && fn.desc.equals(desc)) {
+								currentFN = fn;
+							}
+						}
+						if (currentFN == null) {
+							JOptionPane.showMessageDialog(null, "Field not found?!", "Error!", JOptionPane.ERROR_MESSAGE);
+							return;
+						}
+						currentFN.name = newName;
+						currentFN.desc = newDesc;
+						for (ClassNode cn : Main.classNodes.values()) {
+							for (MethodNode mn : cn.methods) {
+								for (AbstractInsnNode ain : mn.instructions.toArray()) {
+									if (ain instanceof FieldInsnNode) {
+										FieldInsnNode fin = (FieldInsnNode) ain;
+										if (fin.name.equals(name) && fin.desc.equals(desc) && fin.owner.equals(className)) {
+											fin.name = newName;
+											fin.desc = newDesc;
+										}
+									}
+								}
+							}
+						}
+					} else {
+						JOptionPane.showMessageDialog(null, "New Desc is not a field desc!", "Error!", JOptionPane.ERROR_MESSAGE);
+						return;
+					}
+				}
+				try { // refresh
+					ClassNode classNode = Main.classNodes.get(Main.currentNodeName);
+					int prev = Main.txtByteEditView.getCaretPosition();
+					String dis = Disassembler.disassemble(classNode);
+					String substr = Main.currentNodeName.substring(0, Main.currentNodeName.length() - 6);
+					for (String key : Main.classNodes.keySet()) {
+						if (key.contains("$")) {
+							String[] split = key.split("\\$");
+							if (split[0].equals(substr)) {
+								dis += "\n" + Disassembler.disassemble(Main.classNodes.get(key));
+							}
+						}
+					}
+					Main.txtByteEditView.setText(dis);
+					Main.txtByteEditView.setCaretPosition(prev);
+				} catch (Exception e2) {
+					e2.printStackTrace();
+				}
+				name = newName;
+				desc = newDesc;
+			}
+		});
+		btnRename.setBounds(345, 237, 89, 23);
+		contentPane.add(btnRename);
+	}
+}

src/me/ByteEdit/boxes/SearchBox.java

@@ -20,15 +20,12 @@ import javax.swing.border.EmptyBorder;
 import me.ByteEdit.main.Main;
 
 public class SearchBox extends JFrame {
-	
+
 	public JPanel contentPane;
 	public JTextField txtFind;
 	public JTextField txtReplace;
 	public JCheckBox chckbxCaseSensitive;
-	
+
-	/**
-	 * Create the frame.
-	 */
 	public SearchBox() {
 		try {
 			UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
@@ -50,7 +47,7 @@ public class SearchBox extends JFrame {
 		txtFind = new JTextField();
 		KeyStroke enter = KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0);
 		txtFind.registerKeyboardAction(new ActionListener() {
-			
+
 			@Override
 			public void actionPerformed(ActionEvent e) {
 				find();
@@ -71,7 +68,7 @@ public class SearchBox extends JFrame {
 		contentPane.add(chckbxCaseSensitive);
 		JButton btnFind = new JButton("Find");
 		btnFind.addActionListener(new ActionListener() {
-			
+
 			public void actionPerformed(ActionEvent e) {
 				find();
 			}
@@ -80,7 +77,7 @@ public class SearchBox extends JFrame {
 		contentPane.add(btnFind);
 		JButton btnReplacefind = new JButton("Replace/Find");
 		btnReplacefind.addActionListener(new ActionListener() {
-			
+
 			public void actionPerformed(ActionEvent e) {
 				replaceFind();
 			}
@@ -89,7 +86,7 @@ public class SearchBox extends JFrame {
 		contentPane.add(btnReplacefind);
 		JButton btnReplace = new JButton("Replace");
 		btnReplace.addActionListener(new ActionListener() {
-			
+
 			public void actionPerformed(ActionEvent e) {
 				replace();
 			}
@@ -98,7 +95,7 @@ public class SearchBox extends JFrame {
 		contentPane.add(btnReplace);
 		JButton btnReplaceAll = new JButton("Replace All");
 		btnReplaceAll.addActionListener(new ActionListener() {
-			
+
 			public void actionPerformed(ActionEvent e) {
 				replaceAll();
 			}
@@ -106,7 +103,7 @@ public class SearchBox extends JFrame {
 		btnReplaceAll.setBounds(130, 184, 110, 23);
 		contentPane.add(btnReplaceAll);
 	}
-	
+
 	public void find() {
 		int startPos = Main.txtByteEditView.getCaretPosition();
 		String toFind = txtFind.getText();
@@ -123,19 +120,19 @@ public class SearchBox extends JFrame {
 		}
 		Main.txtByteEditView.select(startPos + index, startPos + index + toFind.length());
 	}
-	
+
 	public void replaceFind() {
 		replace();
 		find();
 	}
-	
+
 	public void replace() {
 		String txt = Main.txtByteEditView.getText();
 		int startPos = Main.txtByteEditView.getSelectionStart();
 		Main.txtByteEditView.replaceSelection(txtReplace.getText());
 		Main.txtByteEditView.select(startPos, startPos + txtReplace.getText().length());
 	}
-	
+
 	public void replaceAll() {
 		String toFind = txtFind.getText();
 		String toReplace = txtReplace.getText();

src/me/ByteEdit/boxes/TypeOpenBox.java

@@ -21,13 +21,10 @@ import javax.swing.event.ListSelectionListener;
 import me.ByteEdit.main.Main;
 
 public class TypeOpenBox extends JFrame {
-	
+
 	public JPanel contentPane;
 	public JTextField txtSearch;
-	
+
-	/**
-	 * Create the frame.
-	 */
 	public TypeOpenBox() {
 		try {
 			UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
@@ -43,11 +40,11 @@ public class TypeOpenBox extends JFrame {
 		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
 		setContentPane(contentPane);
 		contentPane.setLayout(null);
-		
+
 		DefaultListModel<String> model = new DefaultListModel<>();
 		JList<String> list = new JList(model);
 		list.addListSelectionListener(new ListSelectionListener() {
-			
+
 			public void valueChanged(ListSelectionEvent e) {
 				String val = list.getSelectedValue();
 				if (val != null && !val.equals(Main.currentNodeName)) {
@@ -55,10 +52,10 @@ public class TypeOpenBox extends JFrame {
 				}
 			}
 		});
-		
+
 		txtSearch = new JTextField();
 		txtSearch.addActionListener(new ActionListener() {
-			
+
 			public void actionPerformed(ActionEvent e) {
 				if (model.size() == 1) {
 					list.setSelectedIndex(0);
@@ -66,19 +63,19 @@ public class TypeOpenBox extends JFrame {
 			}
 		});
 		txtSearch.getDocument().addDocumentListener(new DocumentListener() {
-			
+
 			public void changedUpdate(DocumentEvent e) {
 				updateList();
 			}
-			
+
 			public void removeUpdate(DocumentEvent e) {
 				updateList();
 			}
-			
+
 			public void insertUpdate(DocumentEvent e) {
 				updateList();
 			}
-			
+
 			public void updateList() {
 				model.clear();
 				if (txtSearch.getText().isEmpty()) {
@@ -107,13 +104,13 @@ public class TypeOpenBox extends JFrame {
 		txtSearch.setBounds(10, 11, 374, 20);
 		contentPane.add(txtSearch);
 		txtSearch.setColumns(10);
-		
+
 		JScrollPane scrollPane = new JScrollPane();
 		scrollPane.setBounds(10, 46, 374, 194);
 		contentPane.add(scrollPane);
-		
+
 		list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
 		scrollPane.setViewportView(list);
 	}
-	
+
 }

src/me/ByteEdit/boxes/UnicodeBox.java

@@ -16,12 +16,9 @@ import me.ByteEdit.main.Main;
 import me.ByteEdit.utils.UnicodeUtils;
 
 public class UnicodeBox extends JFrame {
-	
+
 	private JPanel contentPane;
-	
+
-	/**
-	 * Create the frame.
-	 */
 	public UnicodeBox() {
 		try {
 			UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
@@ -37,12 +34,12 @@ public class UnicodeBox extends JFrame {
 		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
 		setContentPane(contentPane);
 		contentPane.setLayout(null);
-		
+
 		JTextArea textArea = new JTextArea();
-		
+
 		JButton btnEscape = new JButton("Escape");
 		btnEscape.addActionListener(new ActionListener() {
-			
+
 			public void actionPerformed(ActionEvent e) {
 				try {
 					textArea.setText(UnicodeUtils.escape(textArea.getText()));
@@ -53,10 +50,10 @@ public class UnicodeBox extends JFrame {
 		});
 		btnEscape.setBounds(10, 137, 89, 23);
 		contentPane.add(btnEscape);
-		
+
 		JButton btnUnescape = new JButton("Unescape");
 		btnUnescape.addActionListener(new ActionListener() {
-			
+
 			public void actionPerformed(ActionEvent e) {
 				try {
 					textArea.setText(UnicodeUtils.unescape(textArea.getText()));
@@ -67,11 +64,11 @@ public class UnicodeBox extends JFrame {
 		});
 		btnUnescape.setBounds(195, 137, 89, 23);
 		contentPane.add(btnUnescape);
-		
+
 		JScrollPane scrollPane = new JScrollPane();
 		scrollPane.setBounds(10, 11, 274, 115);
 		contentPane.add(scrollPane);
-		
+
 		scrollPane.setViewportView(textArea);
 	}
 }

src/me/ByteEdit/edit/Disassembler.java

@@ -70,7 +70,7 @@ public class Disassembler {
 
 	}
 
-	public static DisassembleTuple disassemble(ClassNode classNode, MethodNode methodToFind) {
+	public static DisassembleTuple disassemble(ClassNode classNode, Object nodeToFind) {
 		if (classNode == null) {
 			return new DisassembleTuple("ClassNode is null! This is not a valid java class file!");
 		}
@@ -228,6 +228,9 @@ public class Disassembler {
 						s += "\n";
 					}
 				}
+				if (fn.equals(nodeToFind)) {
+					lineFound = s.split("\\n").length;
+				}
 				s += "\t" + ClassUtil.getAccessFlagsFull(fn.access).replace("varargs", "transient") + UnicodeUtils.escapeWithSpaces(fn.desc) + " "
 						+ UnicodeUtils.escapeWithSpaces(fn.name);
 				if (fn.value != null) {
@@ -303,7 +306,7 @@ public class Disassembler {
 							s += "\n";
 						}
 					}
-					if (mn.equals(methodToFind)) {
+					if (mn.equals(nodeToFind)) {
 						lineFound = s.split("\\n").length;
 					}
 					s += "\t" + ClassUtil.getAccessFlagsFull(mn.access) + UnicodeUtils.escapeWithSpaces(mn.name) + " "

src/me/ByteEdit/main/Main.java

@@ -30,6 +30,7 @@ import java.util.Map.Entry;
 import java.util.jar.JarEntry;
 import java.util.jar.JarFile;
 import java.util.jar.JarOutputStream;
+import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
 import javax.swing.JComponent;
@@ -67,9 +68,11 @@ import org.fife.ui.rtextarea.RTextScrollPane;
 import org.objectweb.asm.ClassReader;
 import org.objectweb.asm.ClassWriter;
 import org.objectweb.asm.tree.ClassNode;
+import org.objectweb.asm.tree.FieldNode;
 import org.objectweb.asm.tree.MethodNode;
 
 import me.ByteEdit.boxes.OptionBox;
+import me.ByteEdit.boxes.RenameBox;
 import me.ByteEdit.boxes.SearchBox;
 import me.ByteEdit.boxes.TypeOpenBox;
 import me.ByteEdit.boxes.UnicodeBox;
@@ -94,6 +97,7 @@ public class Main extends JFrame {
 	public static TypeOpenBox typeOpenBox;
 	public static OptionBox optionBox;
 	public static UnicodeBox unicodeBox;
+	public static RenameBox renameBox;
 	public static JTree tree;
 	public static RTextScrollPane scrollPane_ByteEdit;
 	public static Theme theme;
@@ -169,6 +173,7 @@ public class Main extends JFrame {
 		typeOpenBox = new TypeOpenBox();
 		optionBox = new OptionBox();
 		unicodeBox = new UnicodeBox();
+		renameBox = new RenameBox();
 		setTitle("ByteEdit");
 		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 		setBounds((int) (Toolkit.getDefaultToolkit().getScreenSize().getWidth() / 2 - 407),
@@ -267,6 +272,13 @@ public class Main extends JFrame {
 								} catch (IOException e1) {
 									e1.printStackTrace();
 								}
+								txtByteEditView.setText("");
+								currentNodeName = null;
+								searchBox.setVisible(false);
+								typeOpenBox.setVisible(false);
+								optionBox.setVisible(false);
+								unicodeBox.setVisible(false);
+								renameBox.setVisible(false);
 								isChangingFile = false;
 							}
 							dtde.dropComplete(true);
@@ -300,7 +312,7 @@ public class Main extends JFrame {
 
 			@Override
 			public void keyReleased(KeyEvent e) {
-				if (e.getKeyCode() == 116 && currentNodeName != null) {
+				if (e.getKeyCode() == 116 && currentNodeName != null) { // F5
 					try {
 						ClassNode classNode = classNodes.get(currentNodeName);
 						int prev = txtByteEditView.getCaretPosition();
@@ -316,7 +328,9 @@ public class Main extends JFrame {
 						}
 						txtByteEditView.setText(dis);
 						txtByteEditView.setCaretPosition(prev);
-					} catch (Exception e2) {}
+					} catch (Exception e2) {
+						e2.printStackTrace();
+					}
 				}
 			}
 		});
@@ -326,6 +340,7 @@ public class Main extends JFrame {
 		KeyStroke ctrlG = KeyStroke.getKeyStroke(KeyEvent.VK_G, KeyEvent.CTRL_DOWN_MASK);
 		KeyStroke ctrlO = KeyStroke.getKeyStroke(KeyEvent.VK_O, KeyEvent.CTRL_DOWN_MASK);
 		KeyStroke ctrlU = KeyStroke.getKeyStroke(KeyEvent.VK_U, KeyEvent.CTRL_DOWN_MASK);
+		KeyStroke ctrlR = KeyStroke.getKeyStroke(KeyEvent.VK_R, KeyEvent.CTRL_DOWN_MASK);
 		// global
 		txtByteEditView.registerKeyboardAction(new ActionListener() {
 
@@ -385,6 +400,17 @@ public class Main extends JFrame {
 				}
 			}
 		}, ctrlG, JComponent.WHEN_FOCUSED);
+		txtByteEditView.registerKeyboardAction(new ActionListener() {
+
+			@Override
+			public void actionPerformed(ActionEvent e) {
+				try {
+					renameSelected();
+				} catch (BadLocationException e1) {
+					e1.printStackTrace();
+				}
+			}
+		}, ctrlR, JComponent.WHEN_FOCUSED);
 		txtByteEditView.setEditable(true);
 		txtByteEditView.setSyntaxEditingStyle(SyntaxConstants.SYNTAX_STYLE_JAVA_DISASSEMBLE);
 		txtByteEditView.setCodeFoldingEnabled(true);
@@ -445,6 +471,84 @@ public class Main extends JFrame {
 				return;
 			}
 			selectFile(className + ".class");
+		} else if (line.startsWith("getstatic ") || line.startsWith("putstatic ") || line.startsWith("getfield ") || line.startsWith("putfield ")) {
+			String[] split = line.split(" ");
+			String desc = UnicodeUtils.unescape(split[1]);
+			String className = UnicodeUtils.unescape(split[2]);
+			String[] nameSplit = className.split("/");
+			String fieldName = nameSplit[nameSplit.length - 1];
+			className = className.substring(0, className.length() - fieldName.length() - 1);
+			ClassNode classNode = classNodes.get(className + ".class");
+			if (classNode == null) {
+				return;
+			}
+			for (FieldNode fn : classNode.fields) {
+				if (fn.name.equals(fieldName) && fn.desc.equals(desc)) {
+					while (classNode.outerClass != null) {
+						classNode = classNodes.get(classNode.outerClass + ".class");
+					}
+					int lineFound = selectFileWithSearch(classNode.name + ".class", fn);
+					if (lineFound != -1) {
+						Main.txtByteEditView.setCaretPosition(Main.txtByteEditView.getLineStartOffset(lineFound));
+					}
+					break;
+				}
+			}
+		}
+	}
+
+	private final Pattern renameableFieldPattern = Pattern.compile("^\t(?:[a-z]+ |0x[0-9a-fA-F]+ )*?(\\[*(?:V|Z|C|B|S|I|F|J|D|L.+?;)) ([^ ]+) ?.*");
+	private final Pattern renameableMethodPattern = Pattern
+			.compile("^\t(?:[a-z]+ |0x[0-9a-fA-F]+ )*?([^ ]+) (\\((?:\\[*(?:V|Z|C|B|S|I|F|J|D|L.+?;))*\\)[^ ]+) .*\\{");
+
+	public void renameSelected() throws BadLocationException {
+		int lineStart = txtByteEditView.getLineStartOffsetOfCurrentLine();
+		int lineEnd = txtByteEditView.getLineEndOffsetOfCurrentLine() - 1;
+		String line = txtByteEditView.getText(lineStart, lineEnd - lineStart);
+		Matcher m = renameableFieldPattern.matcher(line);
+		if (m.find()) {
+			setRenameInfo(m, lineEnd);
+		} else {
+			m = renameableMethodPattern.matcher(line);
+			if (m.find()) {
+				if (ClassUtil.isObjectClassMethod(m.group(1), m.group(2), false)) {
+					JOptionPane.showMessageDialog(null, "This method can not be renamed!", "Error!", JOptionPane.ERROR_MESSAGE);
+					return;
+				}
+				setRenameInfo(m, lineEnd);
+			}
+		}
+	}
+
+	public void setRenameInfo(Matcher m, int lineEnd) throws BadLocationException {
+		String[] arr = txtByteEditView.getText(0, lineEnd).split("\n");
+		int lastClassLine = 0;
+		for (int i = 0; i < arr.length; i++) {
+			if (arr[i].startsWith("// #Class")) {
+				lastClassLine = i;
+			}
+		}
+		while (lastClassLine < arr.length && arr[lastClassLine].startsWith("// ")) {
+			lastClassLine++;
+		}
+		if (lastClassLine < arr.length) {
+			String s = arr[lastClassLine];
+			s = s.substring(0, s.length() - 2);
+			if (s.contains(" implements "))
+				s = s.substring(0, s.lastIndexOf(" implements "));
+			if (s.contains(" extends "))
+				s = s.substring(0, s.lastIndexOf(" extends "));
+			String[] split = s.split(" ");
+			String className = UnicodeUtils.unescape(split[split.length - 1]);
+			renameBox.className = className;
+			String name = m.pattern() == renameableFieldPattern ? m.group(2) : m.group(1);
+			String desc = m.pattern() == renameableFieldPattern ? m.group(1) : m.group(2);
+			renameBox.name = name;
+			renameBox.desc = desc;
+			renameBox.txtName.setText(name);
+			renameBox.txtDesc.setText(desc);
+			renameBox.setVisible(true);
+			renameBox.txtName.requestFocusInWindow();
 		}
 	}
 
@@ -463,13 +567,13 @@ public class Main extends JFrame {
 		}
 	}
 
-	public static int selectFileWithSearch(String s, MethodNode methodToFind) {
+	public static int selectFileWithSearch(String s, Object nodeToFind) {
 		if (s.endsWith(".class")) {
 			currentNodeName = s;
 			int lineFound = -1;
 			ClassNode classNode = classNodes.get(s);
 			String dis = "";
-			DisassembleTuple tuple = Disassembler.disassemble(classNode, methodToFind);
+			DisassembleTuple tuple = Disassembler.disassemble(classNode, nodeToFind);
 			if (tuple.getLine() != -1) {
 				lineFound = dis.split("\\n").length + tuple.getLine() - 1;
 			}
@@ -479,7 +583,7 @@ public class Main extends JFrame {
 				if (key.contains("$")) {
 					String[] split = key.split("\\$");
 					if (split[0].equals(substr)) {
-						tuple = Disassembler.disassemble(classNodes.get(key), methodToFind);
+						tuple = Disassembler.disassemble(classNodes.get(key), nodeToFind);
 						if (tuple.getLine() != -1) {
 							lineFound = dis.split("\\n").length + tuple.getLine() + 1;
 						}

src/me/ByteEdit/utils/ClassUtil.java

@@ -7,7 +7,7 @@ import java.util.HashSet;
 import org.objectweb.asm.Type;
 
 public class ClassUtil {
-	
+
 	public static final int ACC_PUBLIC = 0x0001;
 	public static final int ACC_PRIVATE = 0x0002;
 	public static final int ACC_PROTECTED = 0x0004;
@@ -25,7 +25,41 @@ public class ClassUtil {
 	public static final int ACC_ANNOTATION = 0x2000;
 	public static final int ACC_ENUM = 0x4000;
 	public static final int ACC_MANDATED = 0x8000;
-	
+
+	public static boolean isObjectClassMethod(String name, String desc, boolean forbidInits) {
+		switch (name) {
+			case "<init>":
+			case "<clinit>":
+				if (forbidInits) {
+					return true;
+				}
+			case "notifyAll":
+			case "notify":
+				if (desc.equals("()V")) {
+					return true;
+				}
+				break;
+			case "wait":
+				if (desc.equals("()V") || desc.equals("(J)V") || desc.equals("(JI)V")) {
+					return true;
+				}
+				break;
+			case "equals":
+				if (desc.equals("(Ljava/lang/Object;)Z")) {
+					return true;
+				}
+				break;
+			case "hashCode":
+				if (desc.equals("()I")) {
+					return true;
+				}
+				break;
+			default:
+				break;
+		}
+		return false;
+	}
+
 	public static int getIDFromClassNameForType(String s) {
 		s = s.toUpperCase();
 		switch (s) {
@@ -64,7 +98,7 @@ public class ClassUtil {
 			}
 		}
 	}
-	
+
 	public static String getClassNameFromType(Type type) {
 		switch (type.getSort()) {
 			case 0: {
@@ -103,7 +137,7 @@ public class ClassUtil {
 		}
 		return Integer.toString(type.getSort());
 	}
-	
+
 	public static String getArrayTypeByID(int id) {
 		switch (id) {
 			case 4:
@@ -126,7 +160,7 @@ public class ClassUtil {
 				return Integer.toString(id);
 		}
 	}
-	
+
 	public static int getArrayIDByType(String type) {
 		switch (type) {
 			case "Z":
@@ -149,7 +183,7 @@ public class ClassUtil {
 				return Integer.parseInt(type);
 		}
 	}
-	
+
 	public static String getAccessFlagsClass(int access) {
 		String s = "";
 		if ((ACC_PUBLIC & access) != 0) {
@@ -175,7 +209,7 @@ public class ClassUtil {
 		}
 		return s;
 	}
-	
+
 	public static String getAccessFlagsFull(int access) {
 		int acc = 0;
 		String s = "";
@@ -249,7 +283,7 @@ public class ClassUtil {
 			return "0x" + Integer.toHexString(access) + " ";
 		}
 	}
-	
+
 	/**
 	 * @return { JavaType, Import }
 	 */
@@ -308,7 +342,7 @@ public class ClassUtil {
 		}
 		return new String[] { type, importName };
 	}
-	
+
 	/**
 	 * @return { ReturnValue, ParameterValues, Imports } getrennt durch ";"
 	 */
@@ -411,7 +445,7 @@ public class ClassUtil {
 		}
 		return new String[] { returnType[0], parameterStr, importStr };
 	}
-	
+
 	public static int countMethodParams(String desc) {
 		int count = 0;
 		String parameterType = desc.split("\\)")[0].substring(1);
@@ -446,7 +480,7 @@ public class ClassUtil {
 		}
 		return count;
 	}
-	
+
 	public static String getDecompiledValue(Object o, String desc, boolean escapeSpaces) {
 		switch (o.getClass().getName()) {
 			case "java.lang.String": {
@@ -468,11 +502,11 @@ public class ClassUtil {
 				return o.toString();
 		}
 	}
-	
+
 	public static String getDecompiledValue(Object o, String desc) {
 		return getDecompiledValue(o, desc, false);
 	}
-	
+
 	public static Object getCastedValue(String o, String className) {
 		switch (className) {
 			case "java/lang/String": {
@@ -503,7 +537,7 @@ public class ClassUtil {
 				return o.toString();
 		}
 	}
-	
+
 	public static String getSimpleDesc(String type) {
 		String desc = "";
 		for (int i = 0; i < countArraySize(type); i++) {
@@ -517,7 +551,7 @@ public class ClassUtil {
 		}
 		return desc;
 	}
-	
+
 	private static int countArraySize(String type) {
 		int size = 0;
 		for (byte b : type.getBytes()) {
@@ -527,7 +561,7 @@ public class ClassUtil {
 		}
 		return size;
 	}
-	
+
 	public static final HashMap<String, String> VARS = new HashMap<>();
 	static {
 		VARS.put("byte", "B");
@@ -540,7 +574,7 @@ public class ClassUtil {
 		VARS.put("boolean", "Z");
 		VARS.put("void", "V");
 	}
-	
+
 	public static int externalArrayTypeDimensionCount(String s) {
 		int i = 0;
 		int j = "[]".length();
@@ -551,7 +585,7 @@ public class ClassUtil {
 		}
 		return i;
 	}
-	
+
 	public static String internalMethodDescriptor(String returnType, String methodArgs) {
 		returnType = returnType.replace(".", "/");
 		methodArgs = methodArgs.replace(".", "/");