public void Perform()
{
// Rückwärts durch die Liste und alles ausführen
for (int i = steps.Count - 1; i <= 0; --i)
{
ReversibleChange rc = steps[i] as ReversibleChange;
rc.Undo();
}
}
/// <summary>
/// Adds an undo step to the undo stack.
/// </summary>
/// <param name="step">the step</param>
public void AddUndoStep(ReversibleChange step)
{
if (maxUndoSteps == 0)
{
return;
}
if (ignoreSameContext)
{
return;
}
if (undoFrameStack.Count > 0)
{
if (!isRedoing)
{
redoSteps.Clear(); // Aerotech 27.3.13: eine neue Undofähige Aktion soll den Redostack leer machen
}
(undoFrameStack.Peek() as ArrayList).Add(step);
}
else if (redoFrameStack.Count > 0)
{
(redoFrameStack.Peek() as ArrayList).Add(step);
}
else
{
if (isUndoing)
{
redoSteps.Add(step);
}
else
{
undoSteps.Add(step);
if (!isRedoing)
{
redoSteps.Clear(); // Aerotech 27.3.13: eine neue Undofähige Aktion soll den Redostack leer machen
}
while (undoSteps.Count > maxUndoSteps)
{
undoSteps.RemoveAt(0); // ältesten Eintrag entfernen
}
}
}
}
public void Add(ReversibleChange change)
{
steps.Add(change);
}
