/**
* {@inheritDoc}
*/
@Override
protected void initUndoSelectionStrategy() {
AbstractSelectionStrategy preLayoutSelection = new SelectEditedEntities(this);
preLayoutSelection.initSelection();
setPreLayoutSelectionStrategy(preLayoutSelection);
AbstractSelectionStrategy postLayoutSelection = new SelectNodes(this, fSelectedNodes);
postLayoutSelection.initSelection();
setPostLayoutSelectionStrategy(postLayoutSelection);
}