How to change the Element structure of a DefaultSyledDocument

Question

Hello,
I'm trying to override the insertUpdate method of DefaultStyledDocument so that I could build my own Element structure by adding my own BranchElement- and LeafElement-s. If I examine the Element hierarchy everything seems OK. But when I use my document in a JTextPane. I get the error Exception in thread "AWT-EventQueue-0" javax.swing.text.StateInvariantError: GlyphView: Stale view: javax.swing.text.BadLocationException: Invalid location (I add the whole dump at the end of this message), whenever I add a new line to the document (to test this compile and run the included code and press then newline after the 'He' in 'Hello'. I suspect that the error is caused by the fact that the view hierarchy is not updated correctly but I'm not sure. To be honest I have searched for a while for some example code, explaning how you can make your own element hierarchy in a DefaultStyledDocument (without using ElementBuffer), but to no avail.
Can any of the Text gurus here shed some lights on my code and see what is wrong with it or point me to some example code.
Thanks a lot in advance.
Marc Mertens
Full Stack Dump
Exception in thread "AWT-EventQueue-0" javax.swing.text.StateInvariantError: GlyphView: Stale view: javax.swing.text.BadLocationException: Invalid location
at javax.swing.text.GlyphView.getText(GlyphView.java:117)
at javax.swing.text.GlyphPainter1.getSpan(GlyphPainter1.java:43)
at javax.swing.text.GlyphView.getPreferredSpan(GlyphView.java:537)
at javax.swing.text.FlowView$LogicalView.getPreferredSpan(FlowView.java:689)
at javax.swing.text.FlowView.calculateMinorAxisRequirements(FlowView.java:216)
at javax.swing.text.BoxView.checkRequests(BoxView.java:911)
at javax.swing.text.BoxView.getMinimumSpan(BoxView.java:542)
at javax.swing.text.BoxView.calculateMinorAxisRequirements(BoxView.java:879)
at javax.swing.text.BoxView.checkRequests(BoxView.java:911)
at javax.swing.text.BoxView.setSpanOnAxis(BoxView.java:325)
at javax.swing.text.BoxView.layout(BoxView.java:682)
at javax.swing.text.BoxView.setSize(BoxView.java:379)
at javax.swing.plaf.basic.BasicTextUI$RootView.setSize(BasicTextUI.java:1618)
at javax.swing.plaf.basic.BasicTextUI.getPreferredSize(BasicTextUI.java:812)
at javax.swing.JComponent.getPreferredSize(JComponent.java:1615)
at javax.swing.JEditorPane.getPreferredSize(JEditorPane.java:1227)
at javax.swing.ScrollPaneLayout.layoutContainer(ScrollPaneLayout.java:769)
at java.awt.Container.layout(Container.java:1401)
at java.awt.Container.doLayout(Container.java:1390)
at java.awt.Container.validateTree(Container.java:1473)
at java.awt.Container.validate(Container.java:1448)
at javax.swing.RepaintManager.validateInvalidComponents(RepaintManager.java:379)
at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(SystemEventQueueUtilities.java:113)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
Exception in thread "AWT-EventQueue-0" javax.swing.text.StateInvariantError: GlyphView: Stale view: javax.swing.text.BadLocationException: Invalid location
at javax.swing.text.GlyphView.getText(GlyphView.java:117)
at javax.swing.text.GlyphPainter1.getSpan(GlyphPainter1.java:43)
at javax.swing.text.GlyphView.getPreferredSpan(GlyphView.java:537)
at javax.swing.text.FlowView$LogicalView.getPreferredSpan(FlowView.java:689)
at javax.swing.text.FlowView.calculateMinorAxisRequirements(FlowView.java:216)
at javax.swing.text.BoxView.checkRequests(BoxView.java:911)
at javax.swing.text.BoxView.getMinimumSpan(BoxView.java:542)
at javax.swing.text.BoxView.calculateMinorAxisRequirements(BoxView.java:879)
at javax.swing.text.BoxView.checkRequests(BoxView.java:911)
at javax.swing.text.BoxView.setSpanOnAxis(BoxView.java:325)
at javax.swing.text.BoxView.layout(BoxView.java:682)
at javax.swing.text.BoxView.setSize(BoxView.java:379)
at javax.swing.plaf.basic.BasicTextUI$RootView.setSize(BasicTextUI.java:1618)
at javax.swing.plaf.basic.BasicTextUI.modelToView(BasicTextUI.java:946)
at javax.swing.text.DefaultCaret.repaintNewCaret(DefaultCaret.java:1246)
at javax.swing.text.DefaultCaret$1.run(DefaultCaret.java:1225)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
Exception in thread "AWT-EventQueue-0" javax.swing.text.StateInvariantError: GlyphView: Stale view: javax.swing.text.BadLocationException: Invalid location
at javax.swing.text.GlyphView.getText(GlyphView.java:117)
at javax.swing.text.GlyphPainter1.getSpan(GlyphPainter1.java:43)
at javax.swing.text.GlyphView.getPreferredSpan(GlyphView.java:537)
at javax.swing.text.FlowView$LogicalView.getPreferredSpan(FlowView.java:689)
at javax.swing.text.FlowView.calculateMinorAxisRequirements(FlowView.java:216)
at javax.swing.text.BoxView.checkRequests(BoxView.java:911)
at javax.swing.text.BoxView.getMinimumSpan(BoxView.java:542)
at javax.swing.text.BoxView.calculateMinorAxisRequirements(BoxView.java:879)
at javax.swing.text.BoxView.checkRequests(BoxView.java:911)
at javax.swing.text.BoxView.setSpanOnAxis(BoxView.java:325)
at javax.swing.text.BoxView.layout(BoxView.java:682)
at javax.swing.text.BoxView.setSize(BoxView.java:379)
at javax.swing.plaf.basic.BasicTextUI$RootView.setSize(BasicTextUI.java:1618)
at javax.swing.plaf.basic.BasicTextUI.modelToView(BasicTextUI.java:946)
at javax.swing.text.DefaultCaret.setVisible(DefaultCaret.java:952)
at javax.swing.text.DefaultCaret.focusLost(DefaultCaret.java:347)
at java.awt.AWTEventMulticaster.focusLost(AWTEventMulticaster.java:172)
at java.awt.Component.processFocusEvent(Component.java:5380)
at java.awt.Component.processEvent(Component.java:5244)
at java.awt.Container.processEvent(Container.java:1966)
at java.awt.Component.dispatchEventImpl(Component.java:3955)
at java.awt.Container.dispatchEventImpl(Container.java:2024)
at java.awt.Component.dispatchEvent(Component.java:3803)
at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1810)
at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:840)
at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:530)
at java.awt.Component.dispatchEventImpl(Component.java:3841)
at java.awt.Container.dispatchEventImpl(Container.java:2024)
at java.awt.Component.dispatchEvent(Component.java:3803)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
at java.awt.SentEvent.dispatch(SentEvent.java:50)
at java.awt.DefaultKeyboardFocusManager$DefaultKeyboardFocusManagerSentEvent.dispatch(DefaultKeyboardFocusManager.java:161)
at java.awt.DefaultKeyboardFocusManager.sendMessage(DefaultKeyboardFocusManager.java:188)
at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:595)
at java.awt.Component.dispatchEventImpl(Component.java:3841)
at java.awt.Container.dispatchEventImpl(Container.java:2024)
at java.awt.Window.dispatchEventImpl(Window.java:1778)
at java.awt.Component.dispatchEvent(Component.java:3803)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
at java.awt.SequencedEvent.dispatch(SequencedEvent.java:93)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
java.lang.ThreadDeath
at java.lang.Thread.stop(Thread.java:698)
at java.lang.ThreadGroup.stopOrSuspend(ThreadGroup.java:671)
at java.lang.ThreadGroup.stop(ThreadGroup.java:584)
at org.netbeans.core.execution.DefaultSysProcess.stop(DefaultSysProcess.java:54)
at org.netbeans.core.execution.ProcessNodeItem$1.stop(ProcessNodeItem.java:41)
at org.netbeans.core.execution.ProcessNodeItem$TerminateProcessAction.performAction(ProcessNodeItem.java:69)
at org.openide.util.actions.NodeAction$3.run(NodeAction.java:531)
at org.netbeans.modules.openide.util.ActionsBridge.doPerformAction(ActionsBridge.java:47)
at org.openide.util.actions.NodeAction$DelegateAction.actionPerformed(NodeAction.java:527)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1849)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2169)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)
at javax.swing.AbstractButton.doClick(AbstractButton.java:302)
at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1000)
at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1041)
at java.awt.Component.processMouseEvent(Component.java:5488)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3126)
at java.awt.Component.processEvent(Component.java:5253)
at java.awt.Container.processEvent(Container.java:1966)
at java.awt.Component.dispatchEventImpl(Component.java:3955)
at java.awt.Container.dispatchEventImpl(Container.java:2024)
at java.awt.Component.dispatchEvent(Component.java:3803)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4212)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3892)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822)
at java.awt.Container.dispatchEventImpl(Container.java:2010)
at java.awt.Window.dispatchEventImpl(Window.java:1778)
at java.awt.Component.dispatchEvent(Component.java:3803)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
package Document;
import java.util.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;
import javax.swing.text.AbstractDocument.*;
* EditorDocument.java
* Created on September 10, 2006, 3:58 PM
* To change this template, choose Tools | Template Manager
* and open the template in the editor.
* Document to represent the content of a syntax highlighting editor
* @author marc
public class EditorDocument extends DefaultStyledDocument {
    /** List of the white space characters */
    private char[] _whiteSpaceChars;
    /** List of the delimiter characters */
    private char[] _delimiterChars;
    /** Creates a new instance of EditorDocument */
    public EditorDocument(char[] whiteSpaceChars,char[] delimiterChars) {
        _whiteSpaceChars=whiteSpaceChars;
        _delimiterChars=delimiterChars;
     * Updates document structure as a result of text insertion.  This
     * will happen within a write lock.  Since this document simply
     * maps out lines, we refresh the line map.
     * @param chng the change event describing the dit
     * @param attr the set of attributes for the inserted text
    protected void insertUpdate(AbstractDocument.DefaultDocumentEvent chng, AttributeSet attr) {
        int begin=Math.max(0,chng.getOffset()-1);
        int end=begin+chng.getLength()+1;
        Element rootElement=getDefaultRootElement();
        int index;
        int m=rootElement.getElementCount();
        AbstractDocument.BranchElement line;
        super.insertUpdate(chng,attr);
        // Add the tokens
        index=rootElement.getElementIndex(begin);
        m=rootElement.getElementCount();
        if (index>=0)
            for (;index<m && (line=(AbstractDocument.BranchElement) rootElement.getElement(index)).getStartOffset()<=end;index++) {
            chng.addEdit(addTokens(line,attr));
        //fireChangedUpdate(chng);
    protected void insertUpdate(AbstractDocument.DefaultDocumentEvent chng,AttributeSet attr) {
        int begin=chng.getOffset();
        int end=begin+chng.getLength();
        BranchElement root=(BranchElement) getDefaultRootElement();
        // Find the lines that must be removed
        int indexFirstLine=root.getElementIndex(begin);
        int indexLastLine=root.getElementIndex(end);
        BranchElement[] removeLines=new BranchElement[indexLastLine-indexFirstLine+1];
        for (int i=indexFirstLine;i<=indexLastLine;i++)
            removeLines=(BranchElement) root.getElement(i);
// Add the lines must replace the removed lines
int beginFirstLine=removeLines[0].getStartOffset();
int endLastLine=removeLines[removeLines.length-1].getEndOffset();
Segment segment=new Segment();
ArrayList<BranchElement> newLines=new ArrayList<BranchElement>(removeLines.length); // Guess the length of the new lines
try {
getText(beginFirstLine,endLastLine,segment);
char c=segment.current();
BranchElement line;
while (c!=Segment.DONE) {
if (c=='\n') {
line=new BranchElement(root,attr);
newLines.add(line);
addTokens(line,attr,beginFirstLine,segment.getIndex()+1);
beginFirstLine=segment.getIndex()+1;
c=segment.next();
if (beginFirstLine<endLastLine) {
line=new BranchElement(root,attr);
newLines.add(line);
addTokens(line,attr,beginFirstLine,endLastLine);
// Add the lines to the Root element
BranchElement[] linesAdded=newLines.toArray(new BranchElement[newLines.size()]);
root.replace(indexFirstLine,indexLastLine-indexFirstLine+1,linesAdded);
// Notify listeners
DefaultDocumentEvent edit=new DefaultDocumentEvent(begin,end-begin,DefaultDocumentEvent.EventType.CHANGE);
edit.addEdit(new ElementEdit(root,indexFirstLine,removeLines,linesAdded));
fireChangedUpdate(edit);
} catch (Exception e) {
throw new EditorException("Error in insertUpdate, message was "+e.getMessage(),e);
//super.insertUpdate(chng,attr);
private void addTokens(AbstractDocument.BranchElement line,AttributeSet attr,int begin,int end) {
try {
ArrayList<TokenElement> childTokens=new ArrayList<TokenElement>();
int strLength=end-begin;
// Create the new tokens
Segment segment=new Segment();
getText(begin,end-begin,segment);
char c;
int b=0;
TokenElement token;
//System.out.println(str);
c=segment.current();
while (c!=Segment.DONE) {
if (isWhite(c)) {
// Whitespace character
if (b<segment.getIndex()) {
token=new TokenElement(line,attr,begin+b,begin+segment.getIndex(),false);
childTokens.add(token);
b=segment.getIndex();
// Find all the white spaces
while ((c=segment.next())!=Segment.DONE && isWhite(c));
token=new TokenElement(line,attr,begin+b,begin+segment.getIndex(),true);
childTokens.add(token);
b=segment.getIndex(); // Begin of next token
} else if (isDelimiter(c)) {
// Delimiter
if (b<segment.getIndex()) {
token=new TokenElement(line,attr,begin+b,begin+segment.getIndex(),false);
childTokens.add(token);
token=new TokenElement(line,attr,begin+segment.getIndex(),begin+segment.getIndex(),c);
childTokens.add(token);
b=segment.getIndex();
c=segment.next();
} else {
c=segment.next();
if (b<segment.getIndex()) {
token=new TokenElement(line,attr,begin+b,begin+segment.getIndex(),false);
childTokens.add(token);
Element[] removed=new Element[line.getElementCount()];
for (int i=0;i<removed.length;i++)
removed[i]=line.getElement(i);
TokenElement[] newElements=childTokens.toArray(new TokenElement[childTokens.size()]);
line.replace(0,line.getElementCount(),newElements);
} catch (Exception e) {
throw new EditorException("Unexpected BadlocationException ");
* Returns a iterator of the tokens starting from the given position
* @param The position that is covered by the first token returned by this iterator
* @return A iterator of all the tokens starting at the given position
public Iterator<IToken> getTokensFrom(int position) {
return new TokenIterator(position);
private String getText(Element element) {
int begin=element.getStartOffset();
int end=Math.min(element.getEndOffset(),getLength());
try {
return getText(begin,end-begin);
} catch (BadLocationException e) {
throw new EditorException("Unexpected BadLocationException (this should not happen at all)");
* Check if a character is a white space
* @return True if a character is a white space
private boolean isWhite(char c) {
if (c=='\n') // End of line is always a white space
return true;
for (char whiteChar : _whiteSpaceChars)
if (whiteChar==c)
return true;
return false;
* Check if a character is a delimiter character (different from a white space character)
* @return True if a character is a delimiter character
private boolean isDelimiter(char c) {
for (char delimiterChar : _delimiterChars)
if (delimiterChar==c)
return true;
return c=='\0';
* Test code
public static void main(String[] args) {
// Display a test frame containing a test document
try {
JFrame frm=new JFrame();
EditorDocument doc=new EditorDocument(new char[] {' ','\n','\t','\r'},new char[0]);
doc.insertString(0,"Hello",null);
JTextPane pane=new JTextPane(doc);
JScrollPane scroll=new JScrollPane(pane);
frm.getContentPane().add(scroll);
frm.setSize(200,300);
frm.setVisible(true);
} catch (Exception e) {
* Class that is a iterator over the tokens in the document
private class TokenIterator implements Iterator<IToken> {
private int _lineIndex=-1;
private int _tokenIndex=-1;
public TokenIterator(int position) {
AbstractDocument.BranchElement root=(AbstractDocument.BranchElement) getDefaultRootElement();
_lineIndex=root.getElementIndex(position);
AbstractDocument.BranchElement line=(AbstractDocument.BranchElement) root.getElement(_lineIndex);
_tokenIndex=line.getElementIndex(position)-1;
* Removes from the underlying collection the last element returned by the
* iterator (optional operation). This method can be called only once per
* call to <tt>next</tt>. The behavior of an iterator is unspecified if
* the underlying collection is modified while the iteration is in
* progress in any way other than by calling this method.
* @exception UnsupportedOperationException if the <tt>remove</tt>
*           operation is not supported by this Iterator.
* @exception IllegalStateException if the <tt>next</tt> method has not
*           yet been called, or the <tt>remove</tt> method has already
*           been called after the last call to the <tt>next</tt>
*           method.
public void remove() {
// Do nothing
* Returns the next element in the iteration. Calling this method
* repeatedly until the {@link #hasNext()} method returns false will
* return each element in the underlying collection exactly once.
* @return the next element in the iteration.
* @exception NoSuchElementException iteration has no more elements.
public IToken next() {
Element root=getDefaultRootElement();
if (_lineIndex>=root.getElementCount())
return null;
Element line=root.getElement(_lineIndex);
_tokenIndex++;
if (_tokenIndex>=line.getElementCount()) {
_lineIndex++;
if (_lineIndex>=root.getElementCount())
return null;
line=root.getElement(_lineIndex);
if (line.getElementCount()==0)
return null;
_tokenIndex=0;
return (IToken) line.getElement(_tokenIndex);
* Returns <tt>true</tt> if the iteration has more elements. (In other
* words, returns <tt>true</tt> if <tt>next</tt> would return an element
* rather than throwing an exception.)
* @return <tt>true</tt> if the iterator has more elements.
public boolean hasNext() {
int lineIndex=_lineIndex;
int tokenIndex=_tokenIndex;
Element root=getDefaultRootElement();
if (lineIndex>=root.getElementCount())
return false;
Element line=root.getElement(lineIndex);
tokenIndex++;
if (tokenIndex>=line.getElementCount()) {
lineIndex++;
if (lineIndex>=root.getElementCount())
return false;
line=root.getElement(lineIndex);
if (line.getElementCount()==0)
return false;
return true;
* Represents a token in the document
private class TokenElement extends AbstractDocument.LeafElement implements IToken, Comparable<TokenElement> {
private boolean _isWhiteSpace;
private char _separatorChar='\0';
public TokenElement(Element parent,AttributeSet attributeSet,int offs0,int offs1,boolean whiteSpace) {
super(parent,attributeSet,offs0,offs1);
_isWhiteSpace=whiteSpace;
public TokenElement(Element parent,AttributeSet attributeSet,int offs0,int offs1,char separatorChar) {
super(parent,attributeSet,offs0,offs1);
_separatorChar=separatorChar;
* Returns the separator character if this token is a separator, returns '\0' otherwise
* @return The separator charactor or null otherwise
public char getSeparatorChar() {
return _separatorChar;
* Compares this object with the specified object for order. Returns a
* negative integer, zero, or a positive integer as this object is less
* than, equal to, or greater than the specified object.<p>
* In the foregoing description, the notation
* <tt>sgn(</tt><i>expression</i><tt>)</tt> designates the mathematical
* <i>signum</i> function, which is defined to return one of <tt>-1</tt>,
* <tt>0</tt>, or <tt>1</tt> according to whether the value of <i>expression</i>
* is negative, zero or positive.
* The implementor must ensure <tt>sgn(x.compareTo(y)) ==
* -sgn(y.compareTo(x))</tt> for all <tt>x</tt> and <tt>y</tt>. (This
* implies that <tt>x.compareTo(y)</tt> must throw an exception iff
* <tt>y.compareTo(x)</tt> throws an exception.)<p>
* The implementor must also ensure that the relation is transitive:
* <tt>(x.compareTo(y)>0 && y.compareTo(z)>0)</tt> implies
* <tt>x.compareTo(z)>0</tt>.<p>
* Finally, the implementer must ensure that <tt>x.compareTo(y)==0</tt>
* implies that <tt>sgn(x.compareTo(z)) == sgn(y.compareTo(z))</tt>, for
* all <tt>z</tt>.<p>
* It is strongly recommended, but <i>not</i> strictly required that
* <tt>(x.compareTo(y)==0) == (x.equals(y))</tt>. Generally speaking, any
* class that implements the <tt>Comparable</tt> interface and violates
* this condition should clearly indicate this fact. The recommended
* language is "Note: this class has a natural ordering that is
* inconsistent with equals."
* @param o the Object to be compared.
* @return a negative integer, zero, or a positive integer as this object
*           is less than, equal to, or greater than the specified object.
* @throws ClassCastException if the specified object's type prevents it
* from being compared to this Object.
public int compareTo(TokenElement o) {
return getStartOffset()-o.getStartOffset();
* Indicates this is a white space token
* @return true if this is a white space token false otherwise
public boolean isWhiteSpace() {
return _isWhiteSpace;
* Returns the string this token is representing
* @return The string behind this token
public String getText() {
return EditorDocument.this.getText(this);
class SearchToken implements IToken {
private int _offset;
public SearchToken(int offset) {
_offset=offset;
* @return The start of the token used in comparisation operations
public int getEndOffset() {
return _offset;
public int getStartOffset() {
return _offset;
public boolean isWhiteSpace() {
throw new EditorException("May not be called");
public String getText() {
throw new EditorException("May not be called");
public char getSeparatorChar() {
throw new EditorException("May not be called");

Answer 1

I am trying to add primitive syntax highlighting to my JTextPane and have serious problems which I already stated in this forum. Now I read from uncle_alice that the text package from swing is not ment for that and that I need to write my own JTextPane and my own document and view.
Can you explain what you mean by "writing my own JTextPane and View and Dcoument".
My own Document I already have in order to provide SQL-highlighting.
But what exactly do you mean by suggesting to write my own View! Whoever uses JTextPane doesnt really have much to do with its view. Can you give me a hint as I am completely stuck with an Exception : "javax.swing.text.StateInvariantError: GlyphView: Stale view: javax.swing.text.BadLocationException: Length must be positive"
can you pinpoint the standard text-package's deficiency? it lacks what? what is the best work around?
cheers
ioannis