Many javax.swing.text.Position objects en masse

Hi,
I am wondering if anyone has much experience with the performance of javax.swing.text.Document implementations (using GapContent) and a large number of registered Position objects. I am trying to keep track of token boundaries for quick re-lexing, and the token count can be rocket high. I am just beginning to work with this API, and I guess I am looking for any insider information I may be missing.
Thanks,
galaxy

Similar Messages

AAARGH!!! Can't understand javax.swing.text.*

Good afternoon...
does anybody understand javax.swing.text classes? i've read a number of
books, downloaded docs (including those from the javax.swing.text author), and googled everything i could think of. but nothing seems to explain it to me so that i can understand it! maybe i'm just dense, but maybe it really is that difficult.
i want to create a read-only document, who's source is not necessarily a
string, but perhaps an ArrayList of objects with a HashMap of attributes. or even something simpler for now, just an object with a fixed number of attributes. i want to display this information in a JTextArea. i tried implementing a Document and passing it to the JTextArea constructor but just got a NullPointerException.
does anybody know where i can find more information on creating my own
document types?
here's the code for my ReadOnlyDocument class if anyone of you are generous (& adventurous) enough to take a look:
import java.util.ArrayList;
import javax.swing.event.DocumentListener;
import javax.swing.event.UndoableEditListener;
import javax.swing.text.AttributeSet;
import javax.swing.text.BadLocationException;
import javax.swing.text.Document;
import javax.swing.text.Element;
import javax.swing.text.Position;
import javax.swing.text.Segment;
public class ReadOnlyDocument implements Document{
 private String myContent = "this is the contents of my document!";
 private ArrayList listeners;
 private ReadOnlyDocument refSelf = this;
 public ReadOnlyDocument() {
 System.out.println("ReadOnlyDocument.<init>");
 public int getLength() {
 System.out.println("ReadOnlyDocument.getLength() = " + myContent.length());
 return myContent.length();
 public void addDocumentListener(DocumentListener listener) {
 System.out.println("ReadOnlyDocument.addDocumentListener(" + listener + ")");
 if (listeners != null) {
 listeners = new ArrayList();
 listeners.add(listener);
 } else {
 listeners = new ArrayList();
 listeners.add(listener);
 public void removeDocumentListener(DocumentListener listener) {
 System.out.println("ReadOnlyDocument.removeDocumentListener(" +
listener + ")");
 if (listeners != null) {
 listeners.remove(listener);
 public void addUndoableEditListener(UndoableEditListener listener) {
 // Read-only document, nothing to do here
 System.out.println("ReadOnlyDocument.addUndoableEditListener(" +
listener + ")");
 public void removeUndoableEditListener(UndoableEditListener listener) {
 // Read-only document, nothing to do here
 System.out.println("ReadOnlyDocument.removeUndoableEditListener(" +
listener + ")");
 public Object getProperty(Object key) {
 System.out.println("ReadOnlyDocument.getProperty(" + key + ") =
null");
 return null;
 public void putProperty(Object key, Object value) {
 System.out.println("ReadOnlyDocument.putProperty(" + key + ")");
 public void remove(int offs, int len) throws BadLocationException {
 // Read-only document, nothing to do here
 System.out.println("ReadOnlyDocument.remove(" + offs + ", " + len +
 public void insertString(int offset, String str, AttributeSet a) throws
BadLocationException {
 // Read-only document, nothing to do here
 System.out.println("ReadOnlyDocument.insertString(" + offset + ", " +
str + ", " + a + ")");
 public String getText(int offset, int length) throws
BadLocationException {
 System.out.print("ReadOnlyDocument.getText(" + offset + ", " + length +
") = ");
 if ((offset >= 0) && (length >= 0) && (offset+length <=
myContent.length()+1)) {
 System.out.println(myContent.substring(offset, offset+length-1));
 return myContent.substring(offset, offset+length-1);
 } else {
 System.out.println("BadLocationException!");
 throw new BadLocationException("Bad location requested", 0);
 public void getText(int offset, int length, Segment txt) throws
BadLocationException {
 System.out.print("ReadOnlyDocument.getText(" + offset + ", " + length +
", " + txt + ") = ");
 if ((offset >= 0) && (length >= 0) && (offset+length <=
myContent.length()+1)) {
 System.out.println(myContent.substring(offset, offset+length-1));
 txt = new Segment(myContent.toCharArray(), offset, length);
 } else {
 System.out.println("BadLocationException!");
 throw new BadLocationException("Bad location requested", 0);
 public Position getStartPosition() {
 System.out.println("ReadOnlyDocument.getStartPosition() = 0");
return new Position() {
 public int getOffset() {
 return 0;
 public Position getEndPosition() {
 System.out.println("ReadOnlyDocument.getEndPosition() = " +
myContent.length());
return new Position() {
 public int getOffset() {
 return myContent.length();
 public Position createPosition(int offs) throws BadLocationException {
 System.out.println("ReadOnlyDocument.createPosition(" + offs + ") =
0");
 if ((offs >= 0) && (offs <= myContent.length()-1)) {
 return new Position() {
 public int getOffset() {
 return 0;
} else {
 throw new BadLocationException("Bad location requested", 0);
 public Element[] getRootElements() {
 System.out.println("ReadOnlyDocument.getRootElements()");
 Element[] roots = {new Element() {
 public Document getDocument() {
 return refSelf;
 public Element getParentElement() {
 return null;
 public String getName() {
 return "ReadOnlyRoot";
 public AttributeSet getAttributes() {
 return null;
 public int getStartOffset() {
 return 0;
 public int getEndOffset() {
 return myContent.length() - 1;
 public int getElementIndex(int offset) {
 return 0;
 public int getElementCount() {
 return 0;
 public Element getElement(int index) {
 return null;
 public boolean isLeaf() {
 return true;
return roots;
 public Element getDefaultRootElement() {
 System.out.println("ReadOnlyDocument.getDefaultRootElement()");
return new Element() {
 public Document getDocument() {
 return refSelf;
 public Element getParentElement() {
 return null;
 public String getName() {
 return "ReadOnlyRoot";
 public AttributeSet getAttributes() {
 return null;
 public int getStartOffset() {
 return 0;
 public int getEndOffset() {
 return myContent.length() - 1;
 public int getElementIndex(int offset) {
 return 0;
 public int getElementCount() {
 return 0;
 public Element getElement(int index) {
 return null;
 public boolean isLeaf() {
 return true;
 public void render(Runnable r) {
 // not sure what to put here
 System.out.println("ReadOnlyDocument.render(" + r + ")");
}and here's a simple class to display the document/generate the error:
import java.awt.event.*;
import javax.swing.*;
public class ReadOnlyFrame extends JFrame {
public ReadOnlyFrame() {
super();
setTitle("Read Only Document");
addWindowListener(new WindowAdapter() {
 public void windowClosed(WindowEvent e) {
 System.exit(0);
getContentPane().add(new JTextArea(new ReadOnlyDocument()));
setSize(200, 200);
public static void main(String[] args) {
ReadOnlyFrame rof = new ReadOnlyFrame();
rof.setVisible(true);
Headed for the second star to the right and straight on till morning...
Eric Schultz
aka: Storkman
http://community.webshots.com/user/storky1
mailto:EricSchultzATcanadaDOTcom

if you are getting that print before the timer
starts, then I'd expect it's not blocking. The
problem with these small snippets of code is that we
can't really tell what might be going on elsewhere.Yes, I realize that. AAMOF, there isn't anything going on elsewhere, i.e.
the GestureController object spawns another thread when it gets
created. That other thread blocks until a 'Mover' object is delivered to
the GestureController object. The mutex/synchronizing stuff works
like the textbook version, i.e. no deadlock, no deadly embrace, no
nothing. When the timer is started, the Mover is supposed to
call back the 'animate' method, just a method in the GestureController
object.
All the System.out.prints show that it gets there. The task (an ActionListener)
dispatched by that timer doesn't start. As you can see above, I've
used System.out.prints for that too. It is as if that Timer doesn't start.
I still haven't found anything ... This is what the 'auto.move' thing is
supposed to do: static class DragMover implements Mover {
 DrawableStack from;
 DrawableStack to;
 int position;
 DragMover(DrawableStack from, int position, DrawableStack to) {
 this.from= from;
 this.to = to;
 this.position= position;
 public void move() {
 System.out.println("moving the stuff...");
 GestureController.getGestureController().animate(from, position, to);
 public void undo() { }
 }... the line "moving stuff ..." isn't displayed either, i.e. the actionPerformed
method is never called and then ... there's nothing in between there, i.e.
the Timer is supposed to call that method.
Thank you for your reply, much appreciated and,
kind regards,
Jos
by that timer (an ActionListener)

Fix for PENDING in javax.swing.text.html.ParagraphView line #131

Investigating source of HTMLEditorKit I found many PENDING things. That's fix for one of them - proper minimal necessary span detecting in table cells.
Hope it will help to somebody else.
import javax.swing.*;
import javax.swing.text.html.*;
import javax.swing.text.html.ParagraphView;
import javax.swing.text.*;
import java.awt.*;
import java.text.*;
import java.util.ArrayList;
public class App extends JFrame {
 public static String htmlString="<html>\n" +
 "<body>\n" +
 "The following table is used to illustrate the PENDING in javax.swing.text.html.ParagraphView line #131 fix.\n" +
 "<table cellspacing=\"0\" border=\"1\" width=\"50%\" cellpadding=\"3\">\n" +
 "<tr>\n" +
 "<td>\n" +
 "111111111111111111111111111111111bold22222222222222222222222222222\n" +
 "</td>\n" +
 "<td>\n" +
 "-\n" +
 "</td>\n" +
 "</tr>\n" +
 "</table>\n" +
 "\n" +
 "</body>\n" +
 "</html>";
 JEditorPane editor=new JEditorPane();
 JEditorPane editor2=new JEditorPane();
 public static void main(String[] args) {
 App app = new App();
 app.setVisible(true);
 public App() {
 super("HTML span fix example");
 setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 JSplitPane split=new JSplitPane(JSplitPane.VERTICAL_SPLIT, createFixedPanel(), createOriginalPanel());
 getContentPane().add(split);
 setSize(700, 500);
 split.setDividerLocation(240);
 setLocationRelativeTo(null);
 JComponent createOriginalPanel() {
 JPanel p=new JPanel(new BorderLayout());
 p.add(new JLabel("Original HTMLEditorKit"), BorderLayout.NORTH);
 HTMLEditorKit kit=new HTMLEditorKit();
 editor2.setEditorKit(kit);
 editor2.setContentType("text/html");
 editor2.setText(htmlString);
 p.add(new JScrollPane(editor2), BorderLayout.CENTER);
 return p;
 JComponent createFixedPanel() {
 JPanel p=new JPanel(new BorderLayout());
 p.add(new JLabel("Fixed HTMLEditorKit"), BorderLayout.NORTH);
 HTMLEditorKit kit=new MyHTMLEditorKit();
 editor.setEditorKit(kit);
 editor.setContentType("text/html");
 editor.setText(htmlString);
 p.add(new JScrollPane(editor), BorderLayout.CENTER);
 return p;
class MyHTMLEditorKit extends HTMLEditorKit {
 ViewFactory defaultFactory=new MyHTMLFactory();
 public ViewFactory getViewFactory() {
 return defaultFactory;
class MyHTMLFactory extends HTMLEditorKit.HTMLFactory {
 public View create(Element elem) {
 View v=super.create(elem);
 if (v instanceof ParagraphView) {
 v=new MyParagraphView(elem);
 return v;
class MyParagraphView extends ParagraphView {
 public MyParagraphView(Element elem) {
 super(elem);
 protected SizeRequirements calculateMinorAxisRequirements(int axis, SizeRequirements r) {
 r = super.calculateMinorAxisRequirements(axis, r);
 float min=getLongestWordSpan();
 r.minimum = Math.max(r.minimum, (int) min);
 return r;
 public float getLongestWordSpan() {
 if (getContainer()!=null && getContainer() instanceof JTextComponent) {
 try {
 int offs=0;
 JTextComponent c=(JTextComponent)getContainer();
 Document doc=getDocument();
 int start=getStartOffset();
 int end=getEndOffset()-1; //don't need the last \n
 String text=doc.getText(start, end - start);
 if(text.length() > 1) {
 BreakIterator words = BreakIterator.getWordInstance(c.getLocale());
 words.setText(text);
 ArrayList<Integer> wordBounds=new ArrayList<Integer>();
 wordBounds.add(offs);
 int count=1;
 while (offs<text.length() && words.isBoundary(offs)) {
 offs=words.next(count);
 wordBounds.add(offs);
 float max=0;
 for (int i=1; i<wordBounds.size(); i++) {
 int wStart=wordBounds.get(i-1)+start;
 int wEnd=wordBounds.get(i)+start;
 float span=getLayoutSpan(wStart,wEnd);
 if (span>max) {
 max=span;
 return max;
 } catch (BadLocationException e) {
 e.printStackTrace();
 return 0;
 public float getLayoutSpan(int startOffset, int endOffset) {
 float res=0;
 try {
 Rectangle r=new Rectangle(Short.MAX_VALUE, Short.MAX_VALUE);
 int startIndex= layoutPool.getViewIndex(startOffset,Position.Bias.Forward);
 int endIndex= layoutPool.getViewIndex(endOffset,Position.Bias.Forward);
 View startView=layoutPool.getView(startIndex);
 View endView=layoutPool.getView(endIndex);
 int x1=startView.modelToView(startOffset,r,Position.Bias.Forward).getBounds().x;
 int x2=endView.modelToView(endOffset,r,Position.Bias.Forward).getBounds().x;
 res=startView.getPreferredSpan(View.X_AXIS)-x1;
 for (int i=startIndex+1; i<endIndex; i++) {
 res+=layoutPool.getView(i).getPreferredSpan(View.X_AXIS);
 res+=x2;
 } catch (BadLocationException e) {
 e.printStackTrace();
 return res;
}Regards,
Stas

I'm changing the foreground color with
MutableAttributeSet attr = new SimpleAttributeSet();
StyleConstants.setForeground(attr, newColor);
int start=MyJTextPane..getSelectionStart();
int end=MyJTextPane.getSelectionEnd();
if (start != end) {
htmlDoc.setCharacterAttributes(start, end, attr, false);
else {
MutableAttributeSet inputAttributes =htmlEditorKit.getInputAttributes();
inputAttributes.addAttributes(attr);

Javax.swing.text complexity?

Hello,
does someone know how complex the javax.swing.text package is?
Perhaps someone knows of how many rows and/or functions the package consists?
thanks
kbj

Hello,
does someone know how complex the javax.swing.text
package is?
Perhaps someone knows of how many rows and/or
functions the package consists?
thanks
kbjDidnt count yet, but if somebody could tell me how to get all classes from a package i could easily calculate method-number.
Besides why do you want to know it ??
regards,
Tim

Javax.swing.text.TableView bug in 1.4 beta 2 ?

Hi,
I derived a class from TableView, which worked fine with 1.3, but now causes the following exception as soon as being layouted:
java.lang.Error: should not happen: class com.lexetius.swing.text.LexTableView
at javax.swing.text.BoxView.baselineLayout(Unknown Source)
at javax.swing.text.ParagraphView$Row.layoutMinorAxis(Unknown Source)
at javax.swing.text.BoxView.setSpanOnAxis(Unknown Source)
at javax.swing.text.BoxView.layout(Unknown Source)
at javax.swing.text.BoxView.setSize(Unknown Source)
at javax.swing.text.BoxView.updateChildSizes(Unknown Source)
at javax.swing.text.BoxView.setSpanOnAxis(Unknown Source)
at javax.swing.text.BoxView.layout(Unknown Source)
at javax.swing.text.FlowView.layout(Unknown Source)
at javax.swing.text.BoxView.setSize(Unknown Source)
at javax.swing.text.BoxView.updateChildSizes(Unknown Source)
at javax.swing.text.BoxView.setSpanOnAxis(Unknown Source)
at javax.swing.text.BoxView.layout(Unknown Source)
at javax.swing.text.BoxView.setSize(Unknown Source)
at javax.swing.plaf.basic.BasicTextUI$RootView.setSize(Unknown Source)
at javax.swing.plaf.basic.BasicTextUI.getPreferredSize(Unknown Source)
at javax.swing.JComponent.getPreferredSize(Unknown Source)
at javax.swing.JEditorPane.getPreferredSize(Unknown Source)
at javax.swing.ScrollPaneLayout.layoutContainer(Unknown Source)
at java.awt.Container.layout(Unknown Source)
at java.awt.Container.doLayout(Unknown Source)
at java.awt.Container.validateTree(Unknown Source)
at java.awt.Container.validate(Unknown Source)
at javax.swing.RepaintManager.validateInvalidComponents(Unknown Source)
at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(Unknow
n Source)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
any ideas???

I wrote the com.lexetius.swing.text.LexTableView component myself. It is derived directly from javax.swing.text.TableView and it adds virtually no functionality. I'm quite sure, the problem comes from the TableView class, but I can't verify that directly, since this class is abstract (why is that, anyway??).
It would certainly help me very much, if anybody had a component, which is also derived from javax.swing.text.TableView and works with the 1.4 beta.

Using of javax.swing.text package

Where can I find any resources devoted to using javax.swing.text package?

At the end of the API documentation for that package you may notice this:
<quote>
Related Documentation
For overviews, tutorials, examples, guides, and tool documentation, please see:
Using Text Components, a section in The Java Tutorial.
</quote>

[HELP! ] why my program thows a javax.swing.text.ChangedCharSetException?

there's the source:
import java.io.*;
import java.util.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;
import javax.swing.text.html.*;
import javax.swing.border.*;
class HTMLMagician extends JFrame
     protected static final String APP_NAME="HTML Magician V1.0 Produced By V Studio";
     protected JTextPane hm_textPane;
     protected StyleSheet hm_styleSheet;
     protected HTMLEditorKit html_kit;
     protected HTMLDocument html_document;
     protected JMenuBar hm_menuBar;
     protected JToolBar hm_toolBar;
     protected JFileChooser hm_fileChooser;
     protected File current_file;
     protected boolean text_changed=false;
     public HTMLMagician()
          super(APP_NAME);
          setSize(800,600);
          getContentPane().setLayout(new BorderLayout());
          produceMenuBar();
          hm_textPane=new JTextPane();
          html_kit=new HTMLEditorKit();
          hm_textPane.setEditorKit(html_kit);
          JScrollPane textPane_scrollPane=new JScrollPane();
          textPane_scrollPane.getViewport().add(hm_textPane);
          getContentPane().add(textPane_scrollPane,BorderLayout.CENTER);
          hm_fileChooser=new JFileChooser();
          javax.swing.filechooser.FileFilter hm_filter=new javax.swing.filechooser.FileFilter()
               public boolean accept(File pathname)
                    if(pathname.isDirectory())
                         return true;
                    String ext_name=pathname.getName().toLowerCase();
                    if(ext_name.endsWith(".htm"))
                         return true;
                    if(ext_name.endsWith(".html"))
                         return true;
                    if(ext_name.endsWith(".asp"))
                         return true;
                    if(ext_name.endsWith(".jsp"))
                         return true;
                    if(ext_name.endsWith(".css"))
                         return true;
                    if(ext_name.endsWith(".php"))
                         return true;
                    if(ext_name.endsWith(".aspx"))
                         return true;
                    if(ext_name.endsWith(".xml"))
                         return true;
                    if(ext_name.endsWith(".txt"))
                         return true;
                    return false;
               public String getDescription()
                    return "HTML files(*.htm,*.html,*.asp,*.jsp,*.css,*.php,*.aspx,*.xml)";
          hm_fileChooser.setAcceptAllFileFilterUsed(false);
          hm_fileChooser.setFileFilter(hm_filter);
          try
               File dir=(new File(".")).getCanonicalFile();
               hm_fileChooser.setCurrentDirectory(dir);
          }catch(IOException ex)
               showError(ex,"Error openning current directory");
          newDocument();
          WindowListener action_winClose=new WindowAdapter()
               public void windowClosing(WindowEvent evt)
                    if(!promptToSave())
                         return;
                    System.exit(0);
          addWindowListener(action_winClose);
          setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
          setVisible(true);
     protected void produceMenuBar()
          hm_menuBar=new JMenuBar();
          hm_toolBar=new JToolBar();
          JMenu menu_file=new JMenu("File");
          menu_file.setMnemonic('f');
          ImageIcon icon_new=new ImageIcon("imgs/file.gif");
          Action action_new=new AbstractAction("New",icon_new)
               public void actionPerformed(ActionEvent evt)
                    if(!promptToSave())
                         return;
                    newDocument();
          JMenuItem item_new=new JMenuItem(action_new);
          item_new.setMnemonic('n');
          item_new.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_N,InputEvent.CTRL_MASK));
          menu_file.add(item_new);
          JButton button_new=hm_toolBar.add(action_new);
          ImageIcon icon_open=new ImageIcon("imgs/folder_open.gif");
          Action action_open=new AbstractAction("Open...",icon_open)
               public void actionPerformed(ActionEvent evt)
                    if(!promptToSave())
                         return;
                    openDocument();
          JMenuItem item_open=new JMenuItem(action_open);
          item_open.setMnemonic('o');
          item_open.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_O,InputEvent.CTRL_MASK));
          menu_file.add(item_open);
          JButton button_open=hm_toolBar.add(action_open);
          ImageIcon icon_save=new ImageIcon("imgs/floppy.gif");
          Action action_save=new AbstractAction("Save",icon_save)
               public void actionPerformed(ActionEvent evt)
                    saveAs(false);
          JMenuItem item_save=new JMenuItem(action_save);
          item_save.setMnemonic('s');
          item_save.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S,InputEvent.CTRL_MASK));
          menu_file.add(item_save);
          JButton button_save=hm_toolBar.add(action_save);
          Action action_saveAs=new AbstractAction("Save As...")
               public void actionPerformed(ActionEvent evt)
                    saveAs(true);
          JMenuItem item_saveAs=new JMenuItem(action_saveAs);
          item_saveAs.setMnemonic('a');
          item_saveAs.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_A,InputEvent.CTRL_MASK));
          menu_file.add(item_saveAs);
          menu_file.addSeparator();
          Action action_close=new AbstractAction("Quit")
               public void actionPerformed(ActionEvent evt)
                    if(!promptToSave())
                         return;
                    System.exit(0);
          JMenuItem item_exit=new JMenuItem(action_close);
          item_exit.setMnemonic('q');
          item_exit.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_Q,InputEvent.CTRL_MASK));
          menu_file.add(item_exit);
          hm_menuBar.add(menu_file);
          setJMenuBar(hm_menuBar);
          getContentPane().add(hm_toolBar,BorderLayout.NORTH);
     protected String getDocumentName()
          return current_file==null ? "Untitled" : current_file.getName();
     protected void newDocument()
          html_document=(HTMLDocument)html_kit.createDefaultDocument();
          hm_styleSheet=html_document.getStyleSheet();
          hm_textPane.setDocument(html_document);
          current_file=null;
          setTitle(getDocumentName()+" - "+APP_NAME);
          Runnable runner=new Runnable()
               public void run()
                    text_changed=false;
                    html_document.addDocumentListener(new action_textChanged());
          SwingUtilities.invokeLater(runner);
     protected void openDocument()
          if(hm_fileChooser.showOpenDialog(HTMLMagician.this)!=JFileChooser.APPROVE_OPTION)
               return;
          File f=hm_fileChooser.getSelectedFile();
          if(f==null || !f.isFile())
               return;
          current_file=f;
          setTitle(getDocumentName()+" - "+APP_NAME);
          HTMLMagician.this.setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
          try
               InputStream in=new FileInputStream(current_file);
               html_document=(HTMLDocument)html_kit.createDefaultDocument();
               html_kit.read(in,html_document,0);
               hm_styleSheet=html_document.getStyleSheet();
               hm_textPane.setDocument(html_document);
               in.close();
          }catch(Exception ex)
               showError(ex,"Error openning file "+current_file);
          HTMLMagician.this.setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
          Runnable runner=new Runnable()
               public void run()
                    text_changed=false;
                    html_document.addDocumentListener(new action_textChanged());
          SwingUtilities.invokeLater(runner);
     protected boolean saveAs(boolean as)
          if(!as && !text_changed)
               return true;
          if(as || current_file==null)
               if(hm_fileChooser.showSaveDialog(HTMLMagician.this)!=JFileChooser.APPROVE_OPTION)
                    return false;
               File f=hm_fileChooser.getSelectedFile();
               if(f==null || !f.isFile())
                    return false;
               current_file=f;
               setTitle(getDocumentName()+" - "+APP_NAME);
          HTMLMagician.this.setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
          try
               OutputStream out=new FileOutputStream(current_file);
               html_kit.write(out,html_document,0,html_document.getLength());
               out.close();
          }catch(Exception ex)
               showError(ex,"Error saving file "+current_file);
          HTMLMagician.this.setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
          return true;
     protected boolean promptToSave()
          if(!text_changed)
               return true;
          int result=JOptionPane.showConfirmDialog(this,"Save change to "+getDocumentName(),APP_NAME,JOptionPane.YES_NO_CANCEL_OPTION,JOptionPane.INFORMATION_MESSAGE);
          switch(result)
               case JOptionPane.YES_OPTION:
                    if(!saveAs(false))
                         return false;
                    return true;
               case JOptionPane.NO_OPTION:
                    return true;
               case JOptionPane.CANCEL_OPTION:
                    return false;
          return true;
     protected void showError(Exception ex,String message)
          ex.printStackTrace();
          JOptionPane.showMessageDialog(this,message,APP_NAME,JOptionPane.WARNING_MESSAGE);
     public static void main(String[] args)
          new HTMLMagician();
     class action_textChanged implements DocumentListener
          public void changedUpdate(DocumentEvent evt)
               text_changed=true;
          public void insertUpdate(DocumentEvent evt)
               text_changed=true;
          public void removeUpdate(DocumentEvent evt)
               text_changed=true;
when i open a .html file,the command output :
javax.swing.text.ChangedCharSetException
     at javax.swing.text.html.parser.DocumentParser.handleEmptyTag(Unknown Source)
     at javax.swing.text.html.parser.Parser.startTag(Unknown Source)
     at javax.swing.text.html.parser.Parser.parseTag(Unknown Source)
     at javax.swing.text.html.parser.Parser.parseContent(Unknown Source)
     at javax.swing.text.html.parser.Parser.parse(Unknown Source)
     at javax.swing.text.html.parser.DocumentParser.parse(Unknown Source)
     at javax.swing.text.html.parser.ParserDelegator.parse(Unknown Source)
     at javax.swing.text.html.HTMLEditorKit.read(Unknown Source)
     at javax.swing.text.DefaultEditorKit.read(Unknown Source)
     at HTMLMagician.openDocument(HTMLMagician.java:222)
     at HTMLMagician$4.actionPerformed(HTMLMagician.java:128)
     at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
     at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
     at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
     at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
     at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
     at java.awt.Component.processMouseEvent(Unknown Source)
     at javax.swing.JComponent.processMouseEvent(Unknown Source)
     at java.awt.Component.processEvent(Unknown Source)
     at java.awt.Container.processEvent(Unknown Source)
     at java.awt.Component.dispatchEventImpl(Unknown Source)
     at java.awt.Container.dispatchEventImpl(Unknown Source)
     at java.awt.Component.dispatchEvent(Unknown Source)
     at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
     at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
     at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
     at java.awt.Container.dispatchEventImpl(Unknown Source)
     at java.awt.Window.dispatchEventImpl(Unknown Source)
     at java.awt.Component.dispatchEvent(Unknown Source)
     at java.awt.EventQueue.dispatchEvent(Unknown Source)
     at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
     at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
     at java.awt.EventDispatchThread.run(Unknown Source)
why? what's wrong? thanks

The DocumentParser seems to throw a ChangedCharSetException if it finds a "http-equiv" meta tag for "content-type" or "charset" and if the parser's "ignoreCharSet" property is set to false on creation.

Missing Jar files javax.swing.text.Utilities(printTable)

Hi Experts,
please explain which jar files are required for Javax.swing.text.Utilites(printTable()).
tilities utilities = new Utilities();
     ArrayList al = new ArrayList();
     al.add(IPrivateWOAccCodeView.IWOElement.RQT_NO);
     al.add(IPrivateWOAccCodeView.IWOElement.WO_TITLE);
     al.add(IPrivateWOAccCodeView.IWOElement.RQTR);
     al.add(IPrivateWOAccCodeView.IWOElement.TOT_AMT);
     al.add(IPrivateWOAccCodeView.IWOElement.STATUS);
     al.add(IPrivateWOAccCodeView.IWOElement.PLAN_START_DATE);
     al.add(IPrivateWOAccCodeView.IWOElement.TARGET_END_DATE);
     al.add(IPrivateWOAccCodeView.IWOElement.ACCOUNT_CODE);
     al.add(IPrivateWOAccCodeView.IWOElement.APPLY_AMOUNT);
     //To print in HTML
     String printURL = (String) utilities.printTable(al,"Work Order Details By Account Code","Work Order Details By Account Code",wdContext.nodeWO()).get("url");
     wdContext.currentContextElement().setPrintURL(printURL);
    //@@end
Error in printTable that is method is undefined.
Regards,
Smruti
Edited by: smruti moharana on Jun 20, 2011 8:10 AM

According to my knowledge, there is no printTable method in javax.swing.text.Utilities class
What are you trying to achieve?

Extends javax.swing.text.DefaultFormatter

I try to create my own DefaultFormatter to create en hexadecimal field:
I wand to display always 0x and next we can edit hex value.
The problem I have is that I need to overwrite the method:
boolean isNavigatable(int offset)
but his access is friendly (package).
I have try to create a new class in javax.swing.text but my new method is newer used !!!
What can I do !!!

The only two methods you should need to override are "stringToValue" and "valueToString". Those will get you back and forth between what the user enters, and what value is saved.
Hope this helps,
Josh Castagno
http://www.jdc-software.com

Extending javax.swing.text.html.parser

I'm trying to extend prepackaged jdk's html parser but stuck via specific javax.swing.text.html.parser.DTD (taking prepackaged HTML32 DTD and adding entities to it) but stuck with the fact DTD class is poorly described in javadoc (e.g. integer parameters without values description, messy list structures, e.g.). Is the any alternative documentation, maybe some working examples for my problem?

I'm trying to extend prepackaged jdk's html parser but stuck via specific javax.swing.text.html.parser.DTD (taking prepackaged HTML32 DTD and adding entities to it) but stuck with the fact DTD class is poorly described in javadoc (e.g. integer parameters without values description, messy list structures, e.g.). Is the any alternative documentation, maybe some working examples for my problem?

Merge 2 javax.swing.text.Documents

Can I somehowmerge 2 styled documents?
I have 2 JEditPanes with 2 styled docs and I want to append first one at the end of second one.

(When I say styled, I mean, that I have already set some attibutes and I want them in the other document, I know, how to append plain text with insertString)

Javax.swing.text.html.HTMLDocument - reading area tag

I have a HTML file. I want to read href attribute value for area tag.
File Contents are -
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title> College</title>
</head>
<body >
<map name="Map" id="Map">
<area name="area" shape="rect" coords="5,177,417,247"
href="http://www.culver.edu/" target="_blank"
alt="Culver-Stockton College" />
</map>
</body>
</html>Please tell me how to read href value from <area> tag.

I must be missing something because I don't see what all the fuss is about.
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Sabre20090817
 private static final String html = "<html xmlns=\"http://www.w3.org/1999/xhtml\">\n" +
 "<head>\n" +
 "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" />\n" +
 "<title> College</title>\n" +
 "</head>\n" +
 "<body >\n" +
 "<map name=\"Map\" id=\"Map\">\n" +
 "<area shape=\"rect\" coords=\"5,177,417,247\"\n" +
 "href=\"http://www.culver.edu/\" target=\"_blank\"\n" +
 "alt=\"Culver-Stockton College\" />\n" +
 "</map>\n" +
 "</body>\n" +
 "</html>\n";
 public static void main(String[] args) throws Exception
 Matcher matcher = Pattern.compile("<area .*?href=\"([^\"]+)\"", Pattern.DOTALL).matcher(html);
 while (matcher.find())
 System.out.println(matcher.group(1));
{code}

About Swing.text Question

I am new in swing. In javax.swing.text package is there a AbstractDocument class. If I have created that object, how can I move the contents of that object to RTF file? This mind come up because I want to save styled text into RTF file. Is that possible? Please give me some ideas. Thank you.

Look into RtfToolkit in the API maybe that will help.

Multiple Fonts in a javax.swing.JTextPane

I am trying to use multiple fonts in a JTextPane, but can only find ways of changing the font family used. Can anyone give me any pointers on how to do this, or a document somewhere that explains, either way with out going into the javax.swing.text.html, javax.swing.text.html.parser or java.awt.font packages.
Any information that can be provided would be appreciated.
Thanks,
Nathan

Just use SimpleAttributeSet like :
SimpleAttributeSet defaultSet = new SimpleAttributeSet();
        StyleConstants.setForeground( defaultSet, Color.BLACK );
        StyleConstants.setFontFamily( defaultSet, "Verdana" );
        StyleConstants.setFontSize( defaultSet, 14 );
        SimpleAttributeSet navigationSet = new SimpleAttributeSet();
        StyleConstants.setForeground( navigationSet, new Color(00, 99, 00) );
        StyleConstants.setBold( navigationSet, true );
        StyleConstants.setFontFamily( navigationSet, "Verdana" );
        StyleConstants.setFontSize( navigationSet, 11 );
// just defiine endPoints what ever you want
((DefaultStyledDocument)textPane.getDocument()).setCharacterAttributes(0, endPoint1, defaultSet , true)
((DefaultStyledDocument)textPane.getDocument()).setCharacterAttributes(0, endPoint2, navigation , true)

Overriding javax.swing.JButton and drawing the text

I am overriding the javax.swing.JButton paintComponent() I would like to know how to center the text on the button
here is part of the code, the text is printed near the end:
       ((java.awt.Graphics2D)grph2d).setRenderingHint(
                   java.awt.RenderingHints.KEY_ANTIALIASING,
                   java.awt.RenderingHints.VALUE_ANTIALIAS_ON);
       grph2d.setColor(new java.awt.Color(0.0f,1.0f,0.0f,1f));
       grph2d.fillRect(0,0,getWidth(),getHeight());
       if(!this.model.isRollover()){
              grph2d.setColor(new java.awt.Color(0,125,0));
              grph2d.fillRect(0,0,getWidth(),getHeight());
       if(model.isPressed()){
            grph2d.setColor(new java.awt.Color(1f,0f,0f,1f));
            grph2d.fillOval(0,0,getWidth(),getHeight());
       if(model.isArmed()){
            grph2d.setColor(new java.awt.Color(0f,0f,1f,1f));
            grph2d.fillOval(0,0,getWidth(),getHeight());
       grph2d.setColor(new java.awt.Color(0.0f,0.0f,0.0f));
// text draws but isn't centered very well
       grph2d.drawString(this.getText(),
            this.getMargin().left + getX(),
            this.getMargin().top + getY());is there any way to auto center the text, or calculate the length of the text in pixels.

       grph2d.drawString(this.getText(),
            getWidth()/2 - (grph2d.getFontMetrics().stringWidth(getText())/2),
            grph2d.getFontMetrics().getHeight());thanks! works much better now.

Many javax.swing.text.Position objects en masse

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