How to use

setFocusCell

method

in

org.eclipse.jface.viewers.TreeViewerFocusCellManager

  @Override
  public ViewerCell getFocusCell() {
    ViewerCell cell = super.getFocusCell();
    Tree t = (Tree) getViewer().getControl();

    // It is possible that the selection has changed under the hood
    if (cell != null) {
      if (t.getSelection().length == 1
          && t.getSelection()[0] != cell.getItem()) {
        setFocusCell(getViewer().getViewerRowFromItem(
            t.getSelection()[0]).getCell(cell.getColumnIndex()));
      }
    }

    return super.getFocusCell();
  }
}

  @Override
  public ViewerCell getFocusCell() {
    ViewerCell cell = super.getFocusCell();
    Tree t = (Tree) getViewer().getControl();

    // It is possible that the selection has changed under the hood
    if (cell != null) {
      if (t.getSelection().length == 1
          && t.getSelection()[0] != cell.getItem()) {
        setFocusCell(getViewer().getViewerRowFromItem(
            t.getSelection()[0]).getCell(cell.getColumnIndex()));
      }
    }

    return super.getFocusCell();
  }
}