@Override
public void execute() {
if (!line.equals(bar.getLifeline())) return;
if (afterBar != null) {
newPos = line.getActivationBars().indexOf(afterBar);
oldPos = line.getActivationBars().indexOf(bar);
if (!(newPos < oldPos)) newPos -= 1;
if (newPos == oldPos) return;
line.moveActivationBar(newPos, bar);
} else {
newPos = line.getActivationBars().size() - 1;
oldPos = line.getActivationBars().indexOf(bar);
line.moveActivationBar(newPos, bar);
}
}
@Override
public void undo() {
line.moveActivationBar(oldPos, bar);
}
@Override
public void redo() {
line.moveActivationBar(newPos, bar);
}