How to use

isValidOrderIndex

method

in

org.eclipse.jface.viewers.TreeViewerRow

@Override
public int getCreationIndex(int visualIndex) {
  if (item != null && !item.isDisposed() && hasColumns()
      && isValidOrderIndex(visualIndex)) {
    return item.getParent().getColumnOrder()[visualIndex];
  }
  return super.getCreationIndex(visualIndex);
}

@Override
public int getCreationIndex(int visualIndex) {
  if (item != null && !item.isDisposed() && hasColumns()
      && isValidOrderIndex(visualIndex)) {
    return item.getParent().getColumnOrder()[visualIndex];
  }
  return super.getCreationIndex(visualIndex);
}

public int getCreationIndex(int visualIndex) {
  if( item != null && ! item.isDisposed() && hasColumns() && isValidOrderIndex(visualIndex) ) {
    return item.getParent().getColumnOrder()[visualIndex];
  }
  return super.getCreationIndex(visualIndex);
}