Toggling text wrap in a JTextpane

How would I go about toggling text wrap on a JTextpane开发者_JAVA技巧?

public JFrame mainjFrame = new JFrame("Text Editor");
    public JTextPane mainJTextPane = new JTextPane();
        public JScrollPane mainJScrollPane = new JScrollPane(mainJTextPane);
        mainjFrame.add(mainJScrollPane);

See No Wrap Text Pane.

Edit:

Well, if you want to toggle the behaviour, then you would also need to toggle the getScrollableTracksViewportWidth() value. See Scrollable Panel. You should be able to toggle between FIT and STRETCH.

package test;

import java.awt.BorderLayout;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextPane;

public class TestVisual extends JFrame {

    private boolean wrapped;
    private JButton toggleButton = null;
    private JTextPane textPane = null;
    private JPanel noWrapPanel = null;
    private JScrollPane scrollPane = null;

    public TestVisual() {
        super();
        init();
    }

    public void init() {
        this.setSize(300, 200);
        this.setLayout(new BorderLayout());

        wrapped = false;

        textPane = new JTextPane();
        noWrapPanel = new JPanel( new BorderLayout() );
        noWrapPanel.add( textPane );

        scrollPane = new JScrollPane( noWrapPanel );

        toggleButton = new JButton("wrap");
        toggleButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent e) {
                if (wrapped == true){
                    scrollPane.setViewportView(noWrapPanel);
                    noWrapPanel.add(textPane);
                    toggleButton.setText("wrap");
                    wrapped = false;
                }else {
                    scrollPane.setViewportView(textPane);
                    toggleButton.setText("unWrap");
                    wrapped = true;
                }
            }
        });

        this.add(scrollPane, BorderLayout.CENTER);
        this.add(toggleButton, BorderLayout.NORTH);
    }
}

I don't know any other way for what you are looking for..

But this is working well.

( Based on camickr's answer.. +1 )