public void Redo()
{
if (Current.Next != null)
{
ApplyOperation(Current.Next);
Current = Current.Next;
}
}
public void Undo()
{
if (Current != null)
{
ReverseOperation(Current);
Current = Current.Previous;
}
}
public void Undo()
{
if (Current == null)
{
return;
}
else
{
ReverseOperation(Current);
Current = Current.Previous;
}
}
private void ReverseOperation(UndoLink link)
{
switch (link.Operation)
{
case Operation.Add:
DoRemove(link.Naw);
break;
case Operation.Remove:
base.Add(link.Naw);
break;
}
}
private void AddOperation(Operation operation, NAW naw)
{
UndoLink temp = new UndoLink();
temp.Operation = operation;
temp.Naw = naw;
if (First == null)
{
First = temp;
Current = temp;
}
else
{
Current.Next = temp;
temp.Previous = Current;
Current = temp;
}
}
private void AddOperation(Operation operation, NAW naw)
{
UndoLink newUndo = new UndoLink {
Naw = naw, Operation = operation
};
if (Current != null)
{
Current.Next = newUndo;
newUndo.Previous = Current;
}
if (First == null)
{
First = newUndo;
}
Current = newUndo;
}
public void Redo()
{
if (First != null)
{
if (Current == null)
{
Current = First;
ApplyOperation(Current);
Current = Current.Next;
}
else if (Current.Next != null)
{
Current = Current.Next;
ApplyOperation(Current);
}
}
else
{
return;
}
}
public void Redo()
{
switch (Current)
{
case null when First == null:
return;
case null when First != null:
Current = First;
break;
default:
{
if (Current.Next == null)
{
return;
}
Current = Current.Next;
break;
}
}
ApplyOperation(Current);
}
public UndoableNawArray(int size)
: base(size)
{
First = null;
Current = null;
}
public static void Main(string[] args)
{
/* NawDoublyLinkedList ll = new NawDoublyLinkedList();
*
* ll.InsertHead(new NAW("Persoon 1", "Adres 1", "Woonplaats 3"));
* ll.InsertHead(new NAW("Persoon 2", "Adres 2", "Woonplaats 2"));
* ll.InsertHead(new NAW("Persona non grata", "Adres 3", "Woonplaats 1"));
* ll.InsertHead(new NAW("Persoon 4", "Adres 4", "Woonplaats 4"));
* //ll.InsertHead(new NAW("Persoon 1", "Adres 5", "Woonplaats 1"));
* //ll.InsertHead(new NAW("Persoon 2", "Adres 6", "Woonplaats 2"));
* //ll.InsertHead(new NAW("Persona non grata", "Adres 7", "Woonplaats 3"));
* //ll.InsertHead(new NAW("Persoon 2", "Adres 8", "Woonplaats 2"));
* //ll.InsertHead(new NAW("Persoon 9", "Adres 9", "Woonplaats 1"));
* //ll.InsertHead(new NAW("Persoon 10", "Adres 10", "Woonplaats 2"));
*
* for (var current = ll.First; current != null; current = current.Next)
* {
* Console.WriteLine(current.Naw.Woonplaats);
* }
*
* for (var current = ll.Last; current != null; current = current.Previous)
* {
* Console.WriteLine(current.Naw.Woonplaats);
* }
* Console.ReadLine();
*
* ll.BubbleSort();
*
* Console.WriteLine("Na de sort:");
*
* for (var current = ll.First; current != null; current = current.Next)
* {
* current.Naw.Show();
* }
*
*
* Console.ReadKey();*/
UndoableNawArray unArray = new UndoableNawArray(10);
unArray.Add(new NAW("kenneth", "straat 6", "4"));
unArray.Undo();
// unArray.Undo();
printContent();
unArray.Add(new NAW("kenneth", "straat 1", "9"));
unArray.Add(new NAW("kenneth", "straat 2", "8"));
unArray.Add(new NAW("kenneth", "straat 3", "7"));
unArray.Add(new NAW("kenneth", "straat 4", "6"));
printContent();
unArray.Undo();
unArray.Undo();
printContent();
unArray.Redo();
unArray.Redo();
printContent();
unArray.Undo();
printContent();
unArray.Add(new NAW("nelus", "straat 5", "5"));
printContent();
unArray.Redo(); unArray.Redo();
unArray.Redo();
unArray.Redo();
unArray.Redo();
printContent();
void printContent()
{
Console.WriteLine("====================Count = " + unArray.Count + " =======================");
UndoLink temp = unArray.First;
for (int i = 0; i < unArray.Count; i++)
{
temp.Naw.Show();
temp = temp.Next;
}
}
Console.ReadLine();
}
