How to use

modelStyleRange2WidgetStyleRange

method

in

org.eclipse.jface.text.TextViewer

/**
 * Applies the given presentation to the given text widget. Helper method.
 *
 * @param presentation the style information
 * @since 2.1
 */
private void applyTextPresentation(TextPresentation presentation) {
  List<StyleRange> list= new ArrayList<>(presentation.getDenumerableRanges());
  Iterator<StyleRange> e= presentation.getAllStyleRangeIterator();
  while (e.hasNext()) {
    StyleRange range= e.next();
    range= modelStyleRange2WidgetStyleRange(range);
    if (range != null)
      list.add(range);
  }
  if (!list.isEmpty()) {
    StyleRange[] ranges= new StyleRange[list.size()];
    list.toArray(ranges);
    fTextWidget.setStyleRanges(ranges);
  }
}

/**
 * Applies the given presentation to the given text widget. Helper method.
 *
 * @param presentation the style information
 * @since 2.1
 */
private void applyTextPresentation(TextPresentation presentation) {
  List<StyleRange> list= new ArrayList<>(presentation.getDenumerableRanges());
  Iterator<StyleRange> e= presentation.getAllStyleRangeIterator();
  while (e.hasNext()) {
    StyleRange range= e.next();
    range= modelStyleRange2WidgetStyleRange(range);
    if (range != null)
      list.add(range);
  }
  if (!list.isEmpty()) {
    StyleRange[] ranges= new StyleRange[list.size()];
    list.toArray(ranges);
    fTextWidget.setStyleRanges(ranges);
  }
}

if (range != null) {
  range= modelStyleRange2WidgetStyleRange(range);
  if (range != null)
    fTextWidget.setStyleRange(range);
  while (e.hasNext()) {
    range= e.next();
    range= modelStyleRange2WidgetStyleRange(range);
    if (range != null)
      ranges.add(range);
  while (e.hasNext()) {
    range= e.next();
    range= modelStyleRange2WidgetStyleRange(range);
    if (range != null)
      list.add(range);

if (range != null) {
  range= modelStyleRange2WidgetStyleRange(range);
  if (range != null)
    fTextWidget.setStyleRange(range);
  while (e.hasNext()) {
    range= e.next();
    range= modelStyleRange2WidgetStyleRange(range);
    if (range != null)
      ranges.add(range);
  while (e.hasNext()) {
    range= e.next();
    range= modelStyleRange2WidgetStyleRange(range);
    if (range != null)
      list.add(range);

@Override
public void setTextColor(Color color, int start, int length, boolean controlRedraw) {
  if (fTextWidget != null) {
    StyleRange s= new StyleRange();
    s.foreground= color;
    s.start= start;
    s.length= length;
    s= modelStyleRange2WidgetStyleRange(s);
    if (s != null) {
      if (controlRedraw)
        fTextWidget.setRedraw(false);
      try {
        fTextWidget.setStyleRange(s);
      } finally {
        if (controlRedraw)
          fTextWidget.setRedraw(true);
      }
    }
  }
}

@Override
public void setTextColor(Color color, int start, int length, boolean controlRedraw) {
  if (fTextWidget != null) {
    StyleRange s= new StyleRange();
    s.foreground= color;
    s.start= start;
    s.length= length;
    s= modelStyleRange2WidgetStyleRange(s);
    if (s != null) {
      if (controlRedraw)
        fTextWidget.setRedraw(false);
      try {
        fTextWidget.setStyleRange(s);
      } finally {
        if (controlRedraw)
          fTextWidget.setRedraw(true);
      }
    }
  }
}