How to prevent JTextPane from inserting newline on setText(longLine)

Question

Hi all, I have seen some posts (referenced below) regarding
JTextPane and turning off line wrap. I tried these but still
have some unwanted behavior.
If I insert long html content that has no CRs in it into a JTextPane,
using setText(...)
and then immediatly call getText()
I get back my html content with CRs in it.
how can I prevent this????
In the code below, I insert a long line (html), then call getText()
and JTextPane has inserted a CR after the ffff
visually , in the gui, it did not put a line break there, which is great, but
somewhere in the document model it was inserted
I have code that would break if there are newlines in
strange places like that.
I DO want the html markup from the call to JTextPane.getText()
but not with the additional newlines.
import javax.swing.*;
import javax.swing.event.*;
import java.awt.event.*;
import java.awt.*;
import javax.swing.text.html.*;
import javax.swing.text.*;
import javax.swing.border.*;
import java.io.*;
import java.awt.datatransfer.*;
public class MyTextPane extends JTextPane implements MouseListener, ActionListener {
       static final long serialVersionUID = 1;
       private JPopupMenu popupMenu = null;
       private JMenuItem  cutMenuItem = null;
       private JMenuItem  copyMenuItem = null;
       private JMenuItem  pasteMenuItem = null;
       private JMenuItem  clearMenuItem = null;
       //private JMenuItem  selectAllMenuItem = null;
       private int startSelectionPosition = -1;
       private int endSelectionPosition = -1;
       private boolean bTopSeperatorInserted = false;
       private int topMenuItemInsertionIndex = 0;
       public MyTextPane() {
         super();
         init();
       private void init() {
         addMouseListener(this);
         java.awt.Font font = new java.awt.Font("Dialog", java.awt.Font.PLAIN, 14);
         setFont(font);
         createAndConfigurePopupMenu();
         startNewDocument();
         A FocusListener is also added to our editor. The two methods of this listener, focusGained() and
         focusLost(), will be invoked when the editor gains and loses the focus respectively. The purpose of
         this implementation is to save and restore the starting and end positions of the text selection.
         The reason? -> Swing supports only one text selection at any given time. This means
         that if the user selects some text in the editor component to modify it's attributes, and then goes
         off and makes a text selection in some other component, the original text selection will disappear.
         This can potentially be very annoying to the user. To fix this problem I'll save the selection before
         the editor component loses the focus. When the focus is gained we restore the previously saved selection.
         I'll distinguish between two possible situations: when the caret is located at the beginning of the
         selection and when it is located at the end of the selection. In the first case, position the
         caret at the end of the stored interval with the setCaretPosition() method, and then move the
         caret backward to the beginning of the stored interval with the moveCaretPosition() method.
         The second situation is easily handled using the select() method.
         FocusListener focusListener = new FocusListener() {
           public void focusGained(FocusEvent e) {
             int len = getDocument().getLength();
             if (startSelectionPosition>=0 &&
                 endSelectionPosition>=0 &&
                 startSelectionPosition<len &&
                 endSelectionPosition<len)
               if (getCaretPosition() == startSelectionPosition) {
                 setCaretPosition(endSelectionPosition);
                 moveCaretPosition(startSelectionPosition);
               else
                 select(startSelectionPosition, endSelectionPosition);
           public void focusLost(FocusEvent e) {
             startSelectionPosition = getSelectionStart();
             endSelectionPosition = getSelectionEnd();
         addFocusListener(focusListener);
         // CONTROL+ALT+S to view HTML source and change it
         Action viewSourceAction = new ViewSourceAction();
         getActionMap().put("viewSourceAction", viewSourceAction);
         InputMap inputMap = getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
         KeyStroke keyStroke = KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_S,
                                                 InputEvent.CTRL_MASK+InputEvent.ALT_MASK);
         inputMap.put(keyStroke, "viewSourceAction");
       // if a merge tag is at the end of a long line, JTextPane
       // inserts CR/LF into the middle of the merge tag, like this
       // "this is a really long line and at the end is a merge tag <merge \r\n name="Case ID"/>"
       // We need to turn off line wrapping to prevent this.
       // see http://forum.java.sun.com/thread.jspa?forumID=57&threadID=326017
       // overriding setSize(..) and getScrollableTracksViewportWidth()
       public void setSize(Dimension d)
           if (d.width < getParent().getSize().width)
               d.width = getParent().getSize().width;
           super.setSize(d);
       public boolean getScrollableTracksViewportWidth() { return false; }
       class ViewSourceAction extends AbstractAction
         public void actionPerformed(ActionEvent e)
           try {
             HTMLEditorKit m_kit = (HTMLEditorKit)MyTextPane.this.getEditorKit();
             HTMLDocument m_doc = (HTMLDocument)MyTextPane.this.getDocument();
             StringWriter sw = new StringWriter();
             m_kit.write(sw, m_doc, 0, m_doc.getLength());
             sw.close();
             HtmlSourceDlg dlg = new HtmlSourceDlg(null, sw.toString());
             dlg.setVisible(true);
             if (!dlg.succeeded())
               return;
             StringReader sr = new StringReader(dlg.getSource());
             m_doc = createDocument();
             m_kit.read(sr, m_doc, 0);
             sr.close();
             setDocument(m_doc);
           catch (Exception ex) {
             ex.printStackTrace();
       private HTMLDocument createDocument() {
         HTMLEditorKit htmlEditorKit = new HTMLEditorKit();
         StyleSheet styles = htmlEditorKit.getStyleSheet();
         StyleSheet ss = new StyleSheet();
         ss.addStyleSheet(styles);
         HTMLDocument doc = new HTMLDocument(ss);
         //doc.setParser(htmlEditorKit.getParser());
         //doc.setAsynchronousLoadPriority(4);
         //doc.setTokenThreshold(100);
         return doc;
       public Element getElementByTag(HTML.Tag tag) {
         HTMLDocument htmlDocument = (HTMLDocument)getDocument();
         Element root = htmlDocument.getDefaultRootElement();
         return getElementByTag(root, tag);
       public Element getElementByTag(Element parent, HTML.Tag tag) {
         if (parent == null || tag == null)
           return null;
         for (int k=0; k<parent.getElementCount(); k++) {
           Element child = parent.getElement(k);
           if (child.getAttributes().getAttribute(
               StyleConstants.NameAttribute).equals(tag))
             return child;
           Element e = getElementByTag(child, tag);
           if (e != null)
             return e;
         return null;
       public void mouseClicked(MouseEvent e){}
       public void mouseEntered(MouseEvent e){}
       public void mouseExited(MouseEvent e){}
       public void mouseReleased(MouseEvent e){}
       public void mousePressed(MouseEvent e)
         if (e.getModifiers() == MouseEvent.BUTTON3_MASK)
           Clipboard cb = Toolkit.getDefaultToolkit().getSystemClipboard();
           if (cb.getContents(this) == null || !isEditable() || !isEnabled()) {
             pasteMenuItem.setEnabled(false);
           } else {
             pasteMenuItem.setEnabled(true);
           if (getSelectedText() == null) {
             copyMenuItem.setEnabled(false);
             cutMenuItem.setEnabled(false);
           } else {
             copyMenuItem.setEnabled(true);
             if ((getBorder() == null) || !isEditable() || !isEnabled()) {
               cutMenuItem.setEnabled(false);
             } else {
               cutMenuItem.setEnabled(true);
           popupMenu.show(this,e.getX(),e.getY());
       public JPopupMenu getPopupMenu() { return popupMenu; }
        * Creates the Popup menu with Cut,Copy,Paste
        * menu items if it hasn't already been created.
       private void createAndConfigurePopupMenu() {
         popupMenu = new JPopupMenu();
         clearMenuItem = new JMenuItem(new ClearAction());
         clearMenuItem.setText("Clear");
         //selectAllMenuItem = new JMenuItem(new SelectAllAction());
         //selectAllMenuItem.setText("Select All");
         cutMenuItem = new JMenuItem(new DefaultEditorKit.CutAction());
         cutMenuItem.setText("Cut");
         copyMenuItem = new JMenuItem(new DefaultEditorKit.CopyAction());
         copyMenuItem.setText("Copy");
         // when pasting, only paste the plain text (not any markup)
         PasteAction pasteAction = new PasteAction();
         pasteMenuItem = new JMenuItem(/*new DefaultEditorKit.PasteAction()*/);
         pasteMenuItem.addActionListener(pasteAction);
         pasteMenuItem.setText("Paste");
         popupMenu.add(cutMenuItem);
         popupMenu.add(copyMenuItem);
         popupMenu.add(pasteMenuItem);
         popupMenu.add(new JPopupMenu.Separator());
         popupMenu.add(clearMenuItem);
         //popupMenu.add(selectAllMenuItem);
         setKeyStrokes();
       private void doPasteAction()
           Clipboard cb = Toolkit.getDefaultToolkit().getSystemClipboard();
           Transferable content = cb.getContents(this);
           try {
               // when pasting, discard the markup
               String s = (String)content.getTransferData(DataFlavor.stringFlavor);
               HTMLDocument doc = (HTMLDocument)MyTextPane.this.getDocument();
               HTMLEditorKit kit = (HTMLEditorKit)MyTextPane.this.getEditorKit();
               doc.insertString(MyTextPane.this.getCaretPosition(),
                                s,
                                kit.getInputAttributes());
           catch (Throwable exc) {
               exc.printStackTrace();
       class PasteAction implements ActionListener
           public void actionPerformed(ActionEvent e) {
               doPasteAction();
        * Sets the short cut keys and actions for corresponding actions for keys.
       private void setKeyStrokes() {
           KeyStroke paste = KeyStroke.getKeyStroke(KeyEvent.VK_V,
                                                    KeyEvent.CTRL_MASK);
           /** Performs pasteAction when short-cut key paste action is performed */
           Action pasteAction = new AbstractAction() {
                * Handles user clicked actions.
                * @param actionEvent -
                *            ActionEvent object.
               public void actionPerformed(ActionEvent actionEvent) {
                   doPasteAction();
           InputMap inputMap = getInputMap(JTextPane.WHEN_FOCUSED);
           getActionMap().put(inputMap.get(paste), pasteAction);
       public void actionPerformed(ActionEvent e) {
          if(e.getActionCommand().equals("Select All"))
            selectAll();
          else if(e.getActionCommand().equals("Clear"))
            clear();
       public void append(String s) {
         super.setText( getText() + s );
       public void clear() {
         startNewDocument();
       public void startNewDocument() {
         HTMLEditorKit editorKit = new HTMLEditorKit();
         setContentType("text/html");
         setEditorKit(editorKit);
         HTMLDocument document = (HTMLDocument) editorKit.createDefaultDocument();
         setDocument(document);
         // to enable the copy and paste from ms word (and others) to the JTextPane, set
         // this client property. Sun Bug ID: 4765240
         document.putProperty("IgnoreCharsetDirective",Boolean.TRUE);
         document.setPreservesUnknownTags(false);
       class ClearAction extends AbstractAction{
         public void actionPerformed(ActionEvent e) {
           startNewDocument();
       class SelectAllAction extends AbstractAction{
         public void actionPerformed(ActionEvent e) {
           selectAll();
       class HtmlSourceDlg extends JDialog {
         protected boolean m_succeeded = false;
         protected JTextArea m_sourceTxt;
         public HtmlSourceDlg(JFrame parent, String source) {
           super(parent, "HTML Source", true);
           JPanel pp = new JPanel(new BorderLayout());
           pp.setBorder(new EmptyBorder(10, 10, 5, 10));
           m_sourceTxt = new JTextArea(source, 20, 60);
           m_sourceTxt.setFont(new Font("Courier", Font.PLAIN, 12));
           JScrollPane sp = new JScrollPane(m_sourceTxt);
           pp.add(sp, BorderLayout.CENTER);
           JPanel p = new JPanel(new FlowLayout());
           JPanel p1 = new JPanel(new GridLayout(1, 2, 10, 0));
           JButton bt = new JButton("Save");
           ActionListener lst = new ActionListener() {
             public void actionPerformed(ActionEvent e) {
               m_succeeded = true;
               dispose();
           bt.addActionListener(lst);
           p1.add(bt);
           bt = new JButton("Cancel");
           lst = new ActionListener() {
             public void actionPerformed(ActionEvent e) {
               dispose();
           bt.addActionListener(lst);
           p1.add(bt);
           p.add(p1);
           pp.add(p, BorderLayout.SOUTH);
           getContentPane().add(pp, BorderLayout.CENTER);
           pack();
           setResizable(true);
           setLocationRelativeTo(parent);
         public boolean succeeded() {
           return m_succeeded;
         public String getSource() {
           return m_sourceTxt.getText();
       public void addToPopupMenuAboveEditItems(JMenuItem menuItem)
         if (!bTopSeperatorInserted) {
           popupMenu.insert(new JPopupMenu.Separator(), 0);
           bTopSeperatorInserted = true;
         popupMenu.insert(menuItem, topMenuItemInsertionIndex);
         ++topMenuItemInsertionIndex;
       public static void main(String args[])
         JFrame frame = new JFrame("MyTextPane");
         MyTextPane textPane = new MyTextPane();
         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         JScrollPane scrollPane = new JScrollPane(textPane);        
         String s = "<p>aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa bbbb cccc dddd eeee ffff gggg hhhh iiii jjjj aaaaaaaaaaaaaaaaaaaaaaa</p>";        
         System.out.println("\nthe long string prior to calling JTextPane.setText(..) WITH NO NEWLINES\ns=" +s);
         textPane.setText(s);
         System.out.println("\n\nthe text returned from calling JTextPane.setText(..) -> it inserted CR & newline after the ffff\n");
         System.out.println("textPane.getText()=" +textPane.getText());
         frame.getContentPane().add(scrollPane,BorderLayout.CENTER);
         frame.setSize(500, 700);
         frame.setVisible(true);
     }http://forum.java.sun.com/thread.jspa?threadID=356749&messageID=3012080
and
http://forum.java.sun.com/thread.jspa?forumID=57&threadID=326017
Edited by: henryhamster on Sep 13, 2007 8:59 PM

Answer 1

ok, I found a somewhat work around. calling JTextPane.getText() eventually
invokes HTMLEditorKit.write()
which does code
HTMLWriter w = new HTMLWriter(out, (HTMLDocument)doc, pos, len);
w.write();the HTMLWriter() constructor above makes this call
setLineLength(80);
So If I extend some classes (JEditorKit and HTMLWriter) I can call invoke
htmlWriter.setLineLength(1000); // ridiculous length to prevent insertion of CR/LF
here is the hack, can someone please tell
me there is an easier way. :-)
import javax.swing.*;
import javax.swing.event.*;
import java.awt.event.*;
import java.awt.*;
import javax.swing.text.html.*;
import javax.swing.text.*;
import javax.swing.border.*;
import java.io.*;
import java.awt.datatransfer.*;
public class MyTextPane extends JTextPane implements MouseListener,
          ActionListener {
     static final long serialVersionUID = 1;
     private JPopupMenu popupMenu = null;
     private JMenuItem cutMenuItem = null;
     private JMenuItem copyMenuItem = null;
     private JMenuItem pasteMenuItem = null;
     private JMenuItem clearMenuItem = null;
     // private JMenuItem selectAllMenuItem = null;
     private int startSelectionPosition = -1;
     private int endSelectionPosition = -1;
     private boolean bTopSeperatorInserted = false;
     private int topMenuItemInsertionIndex = 0;
     public MyTextPane() {
          super();
          init();
     private void init() {
          addMouseListener(this);
          java.awt.Font font = new java.awt.Font("Dialog", java.awt.Font.PLAIN,
                    14);
          setFont(font);
          createAndConfigurePopupMenu();
          startNewDocument();
           * A FocusListener is also added to our editor. The two methods of this
           * listener, focusGained() and focusLost(), will be invoked when the
           * editor gains and loses the focus respectively. The purpose of this
           * implementation is to save and restore the starting and end positions
           * of the text selection. The reason? -> Swing supports only one text
           * selection at any given time. This means that if the user selects some
           * text in the editor component to modify it's attributes, and then goes
           * off and makes a text selection in some other component, the original
           * text selection will disappear. This can potentially be very annoying
           * to the user. To fix this problem I'll save the selection before the
           * editor component loses the focus. When the focus is gained we restore
           * the previously saved selection. I'll distinguish between two possible
           * situations: when the caret is located at the beginning of the
           * selection and when it is located at the end of the selection. In the
           * first case, position the caret at the end of the stored interval with
           * the setCaretPosition() method, and then move the caret backward to
           * the beginning of the stored interval with the moveCaretPosition()
           * method. The second situation is easily handled using the select()
           * method.
          FocusListener focusListener = new FocusListener() {
               public void focusGained(FocusEvent e) {
                    int len = getDocument().getLength();
                    if (startSelectionPosition >= 0 && endSelectionPosition >= 0
                              && startSelectionPosition < len
                              && endSelectionPosition < len) {
                         if (getCaretPosition() == startSelectionPosition) {
                              setCaretPosition(endSelectionPosition);
                              moveCaretPosition(startSelectionPosition);
                         } else
                              select(startSelectionPosition, endSelectionPosition);
               public void focusLost(FocusEvent e) {
                    startSelectionPosition = getSelectionStart();
                    endSelectionPosition = getSelectionEnd();
          addFocusListener(focusListener);
          // CONTROL+ALT+S to view HTML source and change it
          Action viewSourceAction = new ViewSourceAction();
          getActionMap().put("viewSourceAction", viewSourceAction);
          InputMap inputMap = getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
          KeyStroke keyStroke = KeyStroke.getKeyStroke(
                    java.awt.event.KeyEvent.VK_S, InputEvent.CTRL_MASK
                              + InputEvent.ALT_MASK);
          inputMap.put(keyStroke, "viewSourceAction");
     // if a merge tag is at the end of a long line, JTextPane
     // inserts CR/LF into the middle of the merge tag, like this
     // "this is a really long line and at the end is a merge tag <merge \r\n
     // name="Case ID"/>"
     // We need to turn off line wrapping to prevent this.
     // see http://forum.java.sun.com/thread.jspa?forumID=57&threadID=326017
     // overriding setSize(..) and getScrollableTracksViewportWidth()
     public void setSize(Dimension d) {
          if (d.width < getParent().getSize().width)
               d.width = getParent().getSize().width;
          super.setSize(d);
     public boolean getScrollableTracksViewportWidth() {
          return false;
     class ViewSourceAction extends AbstractAction {
          public void actionPerformed(ActionEvent e) {
               try {
                    HTMLEditorKit m_kit = (HTMLEditorKit) MyTextPane.this
                              .getEditorKit();
                    HTMLDocument m_doc = (HTMLDocument) MyTextPane.this
                              .getDocument();
                    StringWriter sw = new StringWriter();
                    m_kit.write(sw, m_doc, 0, m_doc.getLength());
                    sw.close();
                    HtmlSourceDlg dlg = new HtmlSourceDlg(null, sw.toString());
                    dlg.setVisible(true);
                    if (!dlg.succeeded())
                         return;
                    StringReader sr = new StringReader(dlg.getSource());
                    m_doc = createDocument();
                    m_kit.read(sr, m_doc, 0);
                    sr.close();
                    setDocument(m_doc);
               } catch (Exception ex) {
                    ex.printStackTrace();
     private HTMLDocument createDocument() {
          HTMLEditorKit htmlEditorKit = new HTMLEditorKit();
          StyleSheet styles = htmlEditorKit.getStyleSheet();
          StyleSheet ss = new StyleSheet();
          ss.addStyleSheet(styles);
          HTMLDocument doc = new HTMLDocument(ss);
          // doc.setParser(htmlEditorKit.getParser());
          // doc.setAsynchronousLoadPriority(4);
          // doc.setTokenThreshold(100);
          return doc;
     public Element getElementByTag(HTML.Tag tag) {
          HTMLDocument htmlDocument = (HTMLDocument) getDocument();
          Element root = htmlDocument.getDefaultRootElement();
          return getElementByTag(root, tag);
     public Element getElementByTag(Element parent, HTML.Tag tag) {
          if (parent == null || tag == null)
               return null;
          for (int k = 0; k < parent.getElementCount(); k++) {
               Element child = parent.getElement(k);
               if (child.getAttributes()
                         .getAttribute(StyleConstants.NameAttribute).equals(tag))
                    return child;
               Element e = getElementByTag(child, tag);
               if (e != null)
                    return e;
          return null;
     public void mouseClicked(MouseEvent e) {
     public void mouseEntered(MouseEvent e) {
     public void mouseExited(MouseEvent e) {
     public void mouseReleased(MouseEvent e) {
     public void mousePressed(MouseEvent e) {
          if (e.getModifiers() == MouseEvent.BUTTON3_MASK) {
               Clipboard cb = Toolkit.getDefaultToolkit().getSystemClipboard();
               if (cb.getContents(this) == null || !isEditable() || !isEnabled()) {
                    pasteMenuItem.setEnabled(false);
               } else {
                    pasteMenuItem.setEnabled(true);
               if (getSelectedText() == null) {
                    copyMenuItem.setEnabled(false);
                    cutMenuItem.setEnabled(false);
               } else {
                    copyMenuItem.setEnabled(true);
                    if ((getBorder() == null) || !isEditable() || !isEnabled()) {
                         cutMenuItem.setEnabled(false);
                    } else {
                         cutMenuItem.setEnabled(true);
               popupMenu.show(this, e.getX(), e.getY());
     public JPopupMenu getPopupMenu() {
          return popupMenu;
      * Creates the Popup menu with Cut,Copy,Paste menu items if it hasn't
      * already been created.
     private void createAndConfigurePopupMenu() {
          popupMenu = new JPopupMenu();
          clearMenuItem = new JMenuItem(new ClearAction());
          clearMenuItem.setText("Clear");
          // selectAllMenuItem = new JMenuItem(new SelectAllAction());
          // selectAllMenuItem.setText("Select All");
          cutMenuItem = new JMenuItem(new DefaultEditorKit.CutAction());
          cutMenuItem.setText("Cut");
          copyMenuItem = new JMenuItem(new DefaultEditorKit.CopyAction());
          copyMenuItem.setText("Copy");
          // when pasting, only paste the plain text (not any markup)
          PasteAction pasteAction = new PasteAction();
          pasteMenuItem = new JMenuItem(/* new DefaultEditorKit.PasteAction() */);
          pasteMenuItem.addActionListener(pasteAction);
          pasteMenuItem.setText("Paste");
          popupMenu.add(cutMenuItem);
          popupMenu.add(copyMenuItem);
          popupMenu.add(pasteMenuItem);
          popupMenu.add(new JPopupMenu.Separator());
          popupMenu.add(clearMenuItem);
          // popupMenu.add(selectAllMenuItem);
          setKeyStrokes();
     private void doPasteAction() {
          Clipboard cb = Toolkit.getDefaultToolkit().getSystemClipboard();
          Transferable content = cb.getContents(this);
          try {
               // when pasting, discard the markup
               String s = (String) content
                         .getTransferData(DataFlavor.stringFlavor);
               HTMLDocument doc = (HTMLDocument) MyTextPane.this.getDocument();
               HTMLEditorKit kit = (HTMLEditorKit) MyTextPane.this.getEditorKit();
               doc.insertString(MyTextPane.this.getCaretPosition(), s, kit
                         .getInputAttributes());
          } catch (Throwable exc) {
               exc.printStackTrace();
     class PasteAction implements ActionListener {
          public void actionPerformed(ActionEvent e) {
               doPasteAction();
      * Sets the short cut keys and actions for corresponding actions for keys.
     private void setKeyStrokes() {
          KeyStroke paste = KeyStroke.getKeyStroke(KeyEvent.VK_V,
                    KeyEvent.CTRL_MASK);
          /** Performs pasteAction when short-cut key paste action is performed */
          Action pasteAction = new AbstractAction() {
                * Handles user clicked actions.
                * @param actionEvent -
                *            ActionEvent object.
               public void actionPerformed(ActionEvent actionEvent) {
                    doPasteAction();
          InputMap inputMap = getInputMap(JTextPane.WHEN_FOCUSED);
          getActionMap().put(inputMap.get(paste), pasteAction);
     public void actionPerformed(ActionEvent e) {
          if (e.getActionCommand().equals("Select All"))
               selectAll();
          else if (e.getActionCommand().equals("Clear"))
               clear();
     public void append(String s) {
          super.setText(getText() + s);
     public void clear() {
          startNewDocument();
     public void startNewDocument() {
          MyHTMLEditorKit editorKit = new MyHTMLEditorKit();
          setContentType("text/html");
          setEditorKit(editorKit);
          HTMLDocument document = (HTMLDocument) editorKit
                    .createDefaultDocument();
          setDocument(document);
          // to enable the copy and paste from ms word (and others) to the
          // JTextPane, set
          // this client property. Sun Bug ID: 4765240
          document.putProperty("IgnoreCharsetDirective", Boolean.TRUE);
          document.setPreservesUnknownTags(false);
     class ClearAction extends AbstractAction {
          public void actionPerformed(ActionEvent e) {
               startNewDocument();
     class SelectAllAction extends AbstractAction {
          public void actionPerformed(ActionEvent e) {
               selectAll();
     class HtmlSourceDlg extends JDialog {
          protected boolean m_succeeded = false;
          protected JTextArea m_sourceTxt;
          public HtmlSourceDlg(JFrame parent, String source) {
               super(parent, "HTML Source", true);
               JPanel pp = new JPanel(new BorderLayout());
               pp.setBorder(new EmptyBorder(10, 10, 5, 10));
               m_sourceTxt = new JTextArea(source, 20, 60);
               m_sourceTxt.setFont(new Font("Courier", Font.PLAIN, 12));
               JScrollPane sp = new JScrollPane(m_sourceTxt);
               pp.add(sp, BorderLayout.CENTER);
               JPanel p = new JPanel(new FlowLayout());
               JPanel p1 = new JPanel(new GridLayout(1, 2, 10, 0));
               JButton bt = new JButton("Save");
               ActionListener lst = new ActionListener() {
                    public void actionPerformed(ActionEvent e) {
                         m_succeeded = true;
                         dispose();
               bt.addActionListener(lst);
               p1.add(bt);
               bt = new JButton("Cancel");
               lst = new ActionListener() {
                    public void actionPerformed(ActionEvent e) {
                         dispose();
               bt.addActionListener(lst);
               p1.add(bt);
               p.add(p1);
               pp.add(p, BorderLayout.SOUTH);
               getContentPane().add(pp, BorderLayout.CENTER);
               pack();
               setResizable(true);
               setLocationRelativeTo(parent);
          public boolean succeeded() {
               return m_succeeded;
          public String getSource() {
               return m_sourceTxt.getText();
     public void addToPopupMenuAboveEditItems(JMenuItem menuItem) {
          if (!bTopSeperatorInserted) {
               popupMenu.insert(new JPopupMenu.Separator(), 0);
               bTopSeperatorInserted = true;
          popupMenu.insert(menuItem, topMenuItemInsertionIndex);
          ++topMenuItemInsertionIndex;
     public static void main(String args[]) {
          JFrame frame = new JFrame("MyTextPane");
          MyTextPane textPane = new MyTextPane();
          HTMLDocument doc = (HTMLDocument) textPane.getDocument();
          HTMLEditorKit kit = (HTMLEditorKit) textPane.getEditorKit();
          StringWriter buf = new StringWriter();
          // MyHTMLWriter w = new MyHTMLWriter(buf, (HTMLDocument) doc, 0,
          // doc.getLength());
          // w.setLineLength(150);
          frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          JScrollPane scrollPane = new JScrollPane(textPane);
          String s = "<p>aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa bbbb cccc dddd eeee ffff gggg hhhh iiii jjjj aaaaaaaaaaaaaaaaaaaaaaa</p>";
          System.out
                    .println("\nthe long string prior to calling JTextPane.setText(..) WITH NO NEWLINES\ns="
                              + s);
          textPane.setText(s);
          String sOut = textPane.getText();
          System.out
                    .println("\n\nthe text returned from calling JTextPane.setText(..) -> it inserted CR & newline after the ffff\n");
          System.out.println("textPane.getText()=" + sOut);
          frame.getContentPane().add(scrollPane, BorderLayout.CENTER);
          frame.setSize(500, 700);
          frame.setVisible(true);
class MyHTMLWriter extends HTMLWriter {
     public MyHTMLWriter(Writer buf, HTMLDocument doc, int pos, int len) {
          super(buf, doc, pos, len);
     protected void setLineLength(int l) {
          super.setLineLength(l);
class MyHTMLEditorKit extends HTMLEditorKit {
     public void write(Writer out, Document doc, int pos, int len)
               throws IOException, BadLocationException {
          if (doc instanceof HTMLDocument) {
               MyHTMLWriter w = new MyHTMLWriter(out, (HTMLDocument) doc, pos, len);
               w.setLineLength(200);
               w.write();
          } else if (doc instanceof StyledDocument) {
               MinimalHTMLWriter w = new MinimalHTMLWriter(out,
                         (StyledDocument) doc, pos, len);
               w.write();
          } else {
               super.write(out, doc, pos, len);
}and