public void Execute()
{
group = new GroupedFigures();
figureObservers = new Dictionary <Figure, List <IObserver> >();
group.Select();
for (var it = figures.CreateIterator(); !it.EOL;)
{
var bufferFigure = it.GetCurrent().Value;
if (bufferFigure.Selected)
{
if (bufferFigure.isSticky)
{
figureObservers.Add(bufferFigure, new List <IObserver>(bufferFigure.GetObservers()));
bufferFigure.RemoveAllObserver();
}
group.Add(bufferFigure);
figures.Remove(bufferFigure);
}
else
{
it.Next();
}
}
if (group.Count > 0)
{
figures.AddLast(group);
}
else
{
group = null;
}
figures.NotifyAll();
}
public void Unexecute()
{
var group = new GroupedFigures();
group.Select();
for (var it = ungroupedFigures.CreateIterator(); !it.EOL; it.Next())
{
var bufferFigure = it.GetCurrent().Value;
if (bufferFigure.isSticky)
{
bufferFigure.RemoveAllObserver();
}
group.Add(bufferFigure);
figures.Remove(bufferFigure);
}
if (group.Count > 0)
{
figures.AddLast(group);
}
}
