private void createVerticalRuler(IDocument newInput, Class<SourceViewer> sourceViewerClazz)
throws SecurityException, NoSuchMethodException, IllegalArgumentException,
IllegalAccessException, InvocationTargetException, NoSuchFieldException {
forceCustomAnnotationHover();
Method declaredMethod2 = sourceViewerClazz.getDeclaredMethod("getVerticalRuler");
declaredMethod2.setAccessible(true);
CompositeRuler ruler = (CompositeRuler) declaredMethod2.invoke(sourceViewer);
boolean hasDecorator = false;
Iterator<?> iter = (ruler).getDecoratorIterator();
while (iter.hasNext()) {
Object obj = iter.next();
if (obj instanceof AnnotationColumn) {
hasDecorator = true;
}
}
if (!hasDecorator) {
AnnotationColumn annotationColumn = new AnnotationColumn();
annotationColumn.createControl(ruler, ruler.getControl().getParent());
ruler.addDecorator(0, annotationColumn);
}
}
