How to use

revalidate

method

in

org.fife.ui.rtextarea.Gutter

@Override
public void componentResized(java.awt.event.ComponentEvent e) {
  revalidate();
}

/**
 * Toggles whether the fold indicator is enabled.
 *
 * @param enabled Whether the fold indicator should be enabled.
 * @see #isFoldIndicatorEnabled()
 */
public void setFoldIndicatorEnabled(boolean enabled) {
  if (foldIndicator!=null) {
    if (enabled) {
      add(foldIndicator, BorderLayout.LINE_END);
    }
    else {
      remove(foldIndicator);
    }
    revalidate();
  }
}

/**
 * Toggles whether or not line numbers are visible.
 *
 * @param enabled Whether or not line numbers should be visible.
 * @see #getLineNumbersEnabled()
 */
void setLineNumbersEnabled(boolean enabled) {
  if (lineNumberList!=null) {
    if (enabled) {
      add(lineNumberList);
    }
    else {
      remove(lineNumberList);
    }
    revalidate();
  }
}

/**
 * Toggles whether the icon row header (used for breakpoints, bookmarks,
 * etc.) is enabled.
 *
 * @param enabled Whether the icon row header is enabled.
 * @see #isIconRowHeaderEnabled()
 */
void setIconRowHeaderEnabled(boolean enabled) {
  if (iconArea!=null) {
    if (enabled) {
      add(iconArea, BorderLayout.LINE_START);
    }
    else {
      remove(iconArea);
    }
    revalidate();
  }
}

public void componentResized(java.awt.event.ComponentEvent e) {
  revalidate();
}

private void handleDocumentEvent(DocumentEvent e, Shape a,
                  ViewFactory f) {
  int n = calculateLineCount();
  if (this.nlines != n) {
    this.nlines = n;
    WrappedSyntaxView.this.preferenceChanged(this, false, true);
    // have to repaint any views after the receiver.
    RSyntaxTextArea textArea = (RSyntaxTextArea)getContainer();
    textArea.repaint();
    // Must also revalidate container so gutter components, such
    // as line numbers, get updated for this line's new height
    Gutter gutter = RSyntaxUtilities.getGutter(textArea);
    if (gutter!=null) {
      gutter.revalidate();
      gutter.repaint();
    }
  }
  else if (a != null) {
    Component c = getContainer();
    Rectangle alloc = (Rectangle) a;
    c.repaint(alloc.x, alloc.y, alloc.width, alloc.height);
  }
}

@Override
public void componentResized(java.awt.event.ComponentEvent e) {
  revalidate();
}

public void componentResized(java.awt.event.ComponentEvent e) {
  revalidate();
}

/**
 * Toggles whether the fold indicator is enabled.
 *
 * @param enabled Whether the fold indicator should be enabled.
 * @see #isFoldIndicatorEnabled()
 */
public void setFoldIndicatorEnabled(boolean enabled) {
  if (foldIndicator!=null) {
    if (enabled) {
      add(foldIndicator, BorderLayout.LINE_END);
    }
    else {
      remove(foldIndicator);
    }
    revalidate();
  }
}

/**
 * Toggles whether the icon row header (used for breakpoints, bookmarks,
 * etc.) is enabled.
 *
 * @param enabled Whether the icon row header is enabled.
 * @see #isIconRowHeaderEnabled()
 */
void setIconRowHeaderEnabled(boolean enabled) {
  if (iconArea!=null) {
    if (enabled) {
      add(iconArea, BorderLayout.LINE_START);
    }
    else {
      remove(iconArea);
    }
    revalidate();
  }
}

/**
 * Toggles whether or not line numbers are visible.
 *
 * @param enabled Whether or not line numbers should be visible.
 * @see #getLineNumbersEnabled()
 */
void setLineNumbersEnabled(boolean enabled) {
  if (lineNumberList!=null) {
    if (enabled) {
      add(lineNumberList);
    }
    else {
      remove(lineNumberList);
    }
    revalidate();
  }
}

/**
 * Toggles whether or not line numbers are visible.
 *
 * @param enabled Whether or not line numbers should be visible.
 * @see #getLineNumbersEnabled()
 */
void setLineNumbersEnabled(boolean enabled) {
  if (lineNumberList!=null) {
    if (enabled) {
      add(lineNumberList);
    }
    else {
      remove(lineNumberList);
    }
    revalidate();
  }
}

/**
 * Toggles whether or not line numbers are visible.
 *
 * @param enabled Whether or not line numbers should be visible.
 * @see #getLineNumbersEnabled()
 */
void setLineNumbersEnabled(boolean enabled) {
  if (lineNumberList!=null) {
    if (enabled) {
      add(lineNumberList);
    }
    else {
      remove(lineNumberList);
    }
    revalidate();
  }
}

/**
 * Toggles whether the icon row header (used for breakpoints, bookmarks,
 * etc.) is enabled.
 *
 * @param enabled Whether the icon row header is enabled.
 * @see #isIconRowHeaderEnabled()
 */
void setIconRowHeaderEnabled(boolean enabled) {
  if (iconArea!=null) {
    if (enabled) {
      add(iconArea, BorderLayout.LINE_START);
    }
    else {
      remove(iconArea);
    }
    revalidate();
  }
}

/**
 * Toggles whether the icon row header (used for breakpoints, bookmarks,
 * etc.) is enabled.
 *
 * @param enabled Whether the icon row header is enabled.
 * @see #isIconRowHeaderEnabled()
 */
void setIconRowHeaderEnabled(boolean enabled) {
  if (iconArea!=null) {
    if (enabled) {
      add(iconArea, BorderLayout.LINE_START);
    }
    else {
      remove(iconArea);
    }
    revalidate();
  }
}

private void handleDocumentEvent(DocumentEvent e, Shape a,
                  ViewFactory f) {
  int n = calculateLineCount();
  if (this.nlines != n) {
    this.nlines = n;
    WrappedSyntaxView.this.preferenceChanged(this, false, true);
    // have to repaint any views after the receiver.
    RSyntaxTextArea textArea = (RSyntaxTextArea)getContainer();
    textArea.repaint();
    // Must also revalidate container so gutter components, such
    // as line numbers, get updated for this line's new height
    Gutter gutter = RSyntaxUtilities.getGutter(textArea);
    if (gutter!=null) {
      gutter.revalidate();
      gutter.repaint();
    }
  }
  else if (a != null) {
    Component c = getContainer();
    Rectangle alloc = (Rectangle) a;
    c.repaint(alloc.x, alloc.y, alloc.width, alloc.height);
  }
}