I'm trying to make a html editor. I need to set different colors for different words...

I managed to the change text's background color, but not it's foreground. Can some one help me?
this is my code

public class HEditorView extends FrameView {

    public HEditorView(SingleFrameApplication app) {


        //**** Lots of initializations! Skip further!!!****
        // status bar initialization - message timeout, idle icon and busy animation, etc
        ResourceMap resourceMap = getResourceMap();
        int messageTimeout = resourceMap.getInteger("StatusBar.messageTimeout");
        messageTimer = new Timer(messageTimeout, new ActionListener() {
            public void actionPerformed(ActionEvent e) {
        int busyAnimationRate = resourceMap.getInteger("StatusBar.busyAnimationRate");
        for (int i = 0; i < busyIcons.length; i++) {
            busyIcons[i] = resourceMap.getIcon("StatusBar.busyIcons[" + i + "]");
        busyIconTimer = new Timer(busyAnimationRate, new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                busyIconIndex = (busyIconIndex + 1) % busyIcons.length;
        idleIcon = resourceMap.getIcon("StatusBar.idleIcon");

        // connecting action tasks to status bar via TaskMonitor
        TaskMonitor taskMonitor = new TaskMonitor(getApplication().getContext());
        taskMonitor.addPropertyChangeListener(new java.beans.PropertyChangeListener() {
            public void propertyChange(java.beans.PropertyChangeEvent evt) {
                String propertyName = evt.getPropertyName();
                if ("started".equals(propertyName)) {
                    if (!busyIconTimer.isRunning()) {
                        busyIconIndex = 0;
                } else if ("done".equals(propertyName)) {
                } else if ("message".equals(propertyName)) {
                    String text = (String)(evt.getNewValue());
                    statusMessageLabel.setText((text == null) ? "" : text);
                } else if ("progress".equals(propertyName)) {
                    int value = (Integer)(evt.getNewValue());
        //human made changes
        // This is where it starts!!!!!

        try {
            textPane.read(new FileReader("/home/alexandru/Desktop/index.html"), null);
        } catch (Exception e) {
            System.out.println("Failed to load file index.html");

// Creates highlights around all occurrences of pattern in textComp

    public void highlight(JTextComponent textComp, String pattern) {
        // First remove all old highlights

        try {
            Highlighter hilite = textComp.getHighlighter();
            Document doc = textComp.getDocument();
            String text = doc.getText(0, doc.getLength());
            int pos = 0;
            // Search for pattern
            while ((pos = text.indexOf(pattern, pos)) >= 0) {
                // Create highlighter using private painter and apply around pattern
                hilite.addHighlight(pos, pos + pattern.length(), myHighlightPainter);
                pos += pattern.length();
        } catch (BadLocationException e) {

// Removes only our private highlights
    public void removeHighlights(JTextComponent textComp) {
        Highlighter hilite = textComp.getHighlighter();
        Highlighter.Highlight[] hilites = hilite.getHighlights();

        for (int i = 0; i < hilites.length; i++) {
            if (hilites[i].getPainter() instanceof MyHighlightPainter) {
// An instance of the private subclass of the default highlight painter
    Highlighter.HighlightPainter myHighlightPainter = new MyHighlightPainter(Color.red);

// A private subclass of the default highlight painter
    class MyHighlightPainter extends DefaultHighlighter.DefaultHighlightPainter {

        public MyHighlightPainter(Color color) {

    // Variables declaration - do not modify                     
    private javax.swing.JScrollPane jScrollPane2;
    private javax.swing.JPanel mainPanel;
    private javax.swing.JMenuBar menuBar;
    private javax.swing.JProgressBar progressBar;
    private javax.swing.JLabel statusAnimationLabel;
    private javax.swing.JLabel statusMessageLabel;
    private javax.swing.JPanel statusPanel;
    private javax.swing.JTextPane textPane;
    // End of variables declaration                   

    private final Timer messageTimer;
    private final Timer busyIconTimer;
    private final Icon idleIcon;
    private final Icon[] busyIcons = new Icon[15];
    private int busyIconIndex = 0;

    private JDialog aboutBox;

Edited 6 Years Ago by Alex_: n/a

Would someone pleeeeeaase help me to understand how to highlight text?? :(

Your posted code is missing the import statements needed to compile it.
If there are any packages outside of the standard java packages, they'd be needed also.

Here they are:
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Rectangle;
import java.awt.Shape;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.FileReader;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextField;
import javax.swing.JTextPane;
import javax.swing.UIManager;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import javax.swing.text.BadLocationException;
import javax.swing.text.DefaultHighlighter;
import javax.swing.text.Document;
import javax.swing.text.Highlighter;
import javax.swing.text.JTextComponent;
import javax.swing.text.LayeredHighlighter;
import javax.swing.text.Position;
import javax.swing.text.View;

Don't forget i'm reading a file from my directory.. so you'll have to change it.

try {
textPane.read(new FileReader("/home/alexandru/Desktop/index.html"), null);
} catch (Exception e) {
System.out.println("Failed to load file index.html");

PS: i've attached the whole project (netBeans form generated)

That's the nicest looking code I've seen in a long time. Most posters are pretty sloppy.

Just scanned thru one of my textbooks and see that JTextPanes can be pretty complicated.
I'd recommend looking in Java Tutorial for TextComponentDemo. It shows how to use the various classes that you need to color and set fonts, etc.

Good luck.

Thanks , it helped.

Hey i finally found out how to highlight a foreground. Thanx to NormR1 for indicating a "clue" tutorial!

AbstractDocument doc = (AbstractDocument) jTextPane1.getDocument();
        MutableAttributeSet mas = (MutableAttributeSet)new SimpleAttributeSet ();
        StyleConstants.setForeground(mas, Color.red);
        try {
            doc.insertString(0, "Word", mas);
        } catch (BadLocationException ex) {

PS: The project i attached in my previous post is not the right one,sorry! I've picked the wrong one. Anyhow, it's solved.

Edited 6 Years Ago by Alex_: n/a

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