gui: add common popup actions for text fields.

jadx-gui/src/main/java/jadx/gui/ui/SearchBar.java

 package jadx.gui.ui;
 
+import jadx.gui.utils.TextStandardActions;
 import jadx.gui.utils.NLS;
 import jadx.gui.utils.Utils;
 
@@ -73,6 +74,7 @@ class SearchBar extends JToolBar {
 				search(1);
 			}
 		});
+		new TextStandardActions(searchField);
 		add(searchField);
 
 		JButton prevButton = new JButton(NLS.str("search.previous"));

jadx-gui/src/main/java/jadx/gui/ui/SearchDialog.java

@@ -236,6 +236,7 @@ public class SearchDialog extends JDialog {
 		searchField = new JTextField();
 		searchField.setAlignmentX(LEFT_ALIGNMENT);
 		searchField.getDocument().addDocumentListener(new SearchFieldListener());
+		new TextStandardActions(searchField);
 
 		JCheckBox clsChBox = makeOptionsCheckBox(NLS.str("search_dialog.class"), SearchOptions.CLASS);
 		JCheckBox mthChBox = makeOptionsCheckBox(NLS.str("search_dialog.method"), SearchOptions.METHOD);

jadx-gui/src/main/java/jadx/gui/utils/TextStandardActions.java

+package jadx.gui.utils;
+
+import javax.swing.AbstractAction;
+import javax.swing.Action;
+import javax.swing.JPopupMenu;
+import javax.swing.KeyStroke;
+import javax.swing.event.UndoableEditEvent;
+import javax.swing.event.UndoableEditListener;
+import javax.swing.text.JTextComponent;
+import javax.swing.undo.UndoManager;
+import java.awt.Toolkit;
+import java.awt.datatransfer.DataFlavor;
+import java.awt.event.ActionEvent;
+import java.awt.event.InputEvent;
+import java.awt.event.KeyEvent;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+
+@SuppressWarnings("serial")
+public class TextStandardActions {
+
+	private final JTextComponent textComponent;
+
+	private final JPopupMenu popup = new JPopupMenu();
+	private final UndoManager undoManager;
+
+	private Action undoAction;
+	private Action redoAction;
+	private Action cutAction;
+	private Action copyAction;
+	private Action pasteAction;
+	private Action deleteAction;
+	private Action selectAllAction;
+
+	public TextStandardActions(JTextComponent textComponent) {
+		this.textComponent = textComponent;
+		this.undoManager = new UndoManager();
+
+		initActions();
+		addPopupItems();
+		addKeyActions();
+
+		registerListeners();
+	}
+
+	private void initActions() {
+		undoAction = new AbstractAction(NLS.str("popup.undo")) {
+			@Override
+			public void actionPerformed(ActionEvent ae) {
+				if (undoManager.canUndo()) {
+					undoManager.undo();
+				}
+			}
+		};
+		redoAction = new AbstractAction(NLS.str("popup.redo")) {
+			@Override
+			public void actionPerformed(ActionEvent ae) {
+				if (undoManager.canRedo()) {
+					undoManager.redo();
+				}
+			}
+		};
+		cutAction = new AbstractAction(NLS.str("popup.cut")) {
+			@Override
+			public void actionPerformed(ActionEvent ae) {
+				textComponent.cut();
+			}
+		};
+		copyAction = new AbstractAction(NLS.str("popup.copy")) {
+			@Override
+			public void actionPerformed(ActionEvent ae) {
+				textComponent.copy();
+			}
+		};
+		pasteAction = new AbstractAction(NLS.str("popup.paste")) {
+			@Override
+			public void actionPerformed(ActionEvent ae) {
+				textComponent.paste();
+			}
+		};
+		deleteAction = new AbstractAction(NLS.str("popup.delete")) {
+			@Override
+			public void actionPerformed(ActionEvent ae) {
+				textComponent.replaceSelection("");
+			}
+		};
+		selectAllAction = new AbstractAction(NLS.str("popup.select_all")) {
+			@Override
+			public void actionPerformed(ActionEvent ae) {
+				textComponent.selectAll();
+			}
+		};
+	}
+
+	void addPopupItems() {
+		popup.add(undoAction);
+		popup.add(redoAction);
+		popup.addSeparator();
+		popup.add(cutAction);
+		popup.add(copyAction);
+		popup.add(pasteAction);
+		popup.add(deleteAction);
+		popup.addSeparator();
+		popup.add(selectAllAction);
+	}
+
+	private void addKeyActions() {
+		KeyStroke undoKey = KeyStroke.getKeyStroke(KeyEvent.VK_Z, InputEvent.CTRL_MASK);
+		textComponent.getInputMap().put(undoKey, undoAction);
+		KeyStroke redoKey = KeyStroke.getKeyStroke(KeyEvent.VK_R, InputEvent.CTRL_MASK);
+		textComponent.getInputMap().put(redoKey, redoAction);
+	}
+
+	private void registerListeners() {
+		textComponent.addMouseListener(new MouseAdapter() {
+			public void mouseReleased(MouseEvent e) {
+				if (e.getModifiers() == InputEvent.BUTTON3_MASK
+						&& e.getSource() == textComponent) {
+					process(e);
+				}
+			}
+		});
+		textComponent.getDocument().addUndoableEditListener(new UndoableEditListener() {
+			public void undoableEditHappened(UndoableEditEvent event) {
+				undoManager.addEdit(event.getEdit());
+			}
+		});
+	}
+
+	private void process(MouseEvent e) {
+		textComponent.requestFocus();
+
+		boolean enabled = textComponent.isEnabled();
+		boolean editable = textComponent.isEditable();
+		boolean nonempty = !(textComponent.getText() == null || textComponent.getText().equals(""));
+		boolean marked = textComponent.getSelectedText() != null;
+		boolean pasteAvailable = Toolkit.getDefaultToolkit().getSystemClipboard()
+				.getContents(null).isDataFlavorSupported(DataFlavor.stringFlavor);
+
+		undoAction.setEnabled(enabled && editable && undoManager.canUndo());
+		redoAction.setEnabled(enabled && editable && undoManager.canRedo());
+		cutAction.setEnabled(enabled && editable && marked);
+		copyAction.setEnabled(enabled && marked);
+		pasteAction.setEnabled(enabled && editable && pasteAvailable);
+		deleteAction.setEnabled(enabled && editable && marked);
+		selectAllAction.setEnabled(enabled && nonempty);
+
+		int nx = e.getX();
+		if (nx > 500) {
+			nx = nx - popup.getSize().width;
+		}
+		popup.show(e.getComponent(), nx, e.getY() - popup.getSize().height);
+	}
+}

jadx-gui/src/main/resources/i18n/Messages_en_US.properties

@@ -68,3 +68,11 @@ preferences.cancel=Cancel
 
 msg.open_file=Please open file
 msg.saving_sources=Saving sources
+
+popup.undo=Undo
+popup.redo=Redo
+popup.cut=Cut
+popup.copy=Copy
+popup.paste=Paste
+popup.delete=Delete
+popup.select_all=Select All