public void Add(UndoTask task)
{
for (int i = UndoTasks.Count - 1; i > Cursor; i--)
{
UndoTasks.RemoveAt(i);
}
UndoTasks.Add(task);
Cursor = UndoTasks.Count - 1;
}
public UndoPosition Undo()
{
var position = new UndoPosition();
UndoTask task = UndoTasks[Cursor];
if (task is UndoTaskClassifyMultiple)
{
position = DispatchUndoClassifyMultiple((UndoTaskClassifyMultiple)task);
}
else if (task is UndoTaskClassifyFirstCycleMultiple)
{
position = DispatchUndoClassifyFirstCycleMultiple((UndoTaskClassifyFirstCycleMultiple)task);
}
else if (task is UndoTaskHorizontalSplitMultiple)
{
position = DispatchUndoHorizontalSplitMultiple((UndoTaskHorizontalSplitMultiple)task);
}
else if (task is UndoTaskVerticalSplitMultiple)
{
position = DispatchUndoVerticalSplitMultiple((UndoTaskVerticalSplitMultiple)task);
}
else if (task is UndoTaskHorizontalMergeMultiple)
{
position = DispatchUndoHorizontalMergeMultiple((UndoTaskHorizontalMergeMultiple)task);
}
else if (task is UndoTaskVerticalMergeMultiple)
{
position = DispatchUndoVerticalMergeMultiple((UndoTaskVerticalMergeMultiple)task);
}
else if (task is UndoTaskApproveMultiple)
{
position = DispatchUndoApproveMultiple((UndoTaskApproveMultiple)task);
}
Cursor--;
return(position);
}
