DefaultEditorKit.writableAction
import java.awt.BorderLayout;
import javax.swing.Action;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JScrollPane;
import javax.swing.JSplitPane;
import javax.swing.JTextArea;
import javax.swing.text.DefaultEditorKit;
public class Main {
public static void main(String args[]) {
JFrame frame = new JFrame("Use TextAction");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
final JTextArea leftArea = new JTextArea();
final JTextArea rightArea = new JTextArea();
JSplitPane splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, new JScrollPane(leftArea),
new JScrollPane(rightArea));
splitPane.setDividerLocation(.5);
JMenuBar menuBar = new JMenuBar();
frame.setJMenuBar(menuBar);
JMenu menu = new JMenu("Options");
menuBar.add(menu);
JMenuItem menuItem;
Action readAction = leftArea.getActionMap().get(DefaultEditorKit.readOnlyAction);
menuItem = menu.add(readAction);
menuItem.setText("Make read-only");
Action writeAction = leftArea.getActionMap().get(DefaultEditorKit.writableAction);
menuItem = menu.add(writeAction);
menuItem.setText("Make writable");
menu.addSeparator();
Action cutAction = leftArea.getActionMap().get(DefaultEditorKit.cutAction);
menuItem = menu.add(cutAction);
menuItem.setText("Cut");
Action copyAction = leftArea.getActionMap().get(DefaultEditorKit.copyAction);
menuItem = menu.add(copyAction);
menuItem.setText("Copy");
Action pasteAction = leftArea.getActionMap().get(DefaultEditorKit.pasteAction);
menuItem = menu.add(pasteAction);
menuItem.setText("Paste");
frame.add(splitPane, BorderLayout.CENTER);
frame.setSize(400, 250);
frame.setVisible(true);
}
}
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