/// <summary>
/// Beendet den UndoStep und trägt ihn in die Undo-Liste ein.
/// </summary>
public void EndUndoStep()
{
if (!initialized)
{
return;
}
depth--;
if (depth == 0)
{
if (currentUndoStep.undoEntry.Count > 0)
{
if (undoInAction)
{
redoSteps.Push(currentUndoStep);
}
else
{
if (!redoInAction) // Redo-Buffer löschen
{
redoSteps.Clear();
}
undoSteps.Push(currentUndoStep);
}
}
currentUndoStep = null;
}
}
/// <summary>
/// Führt die angegebene Anzahl von Redo-Steps aus.
/// </summary>
/// <param name="steps"></param>
public void DoRedo(int steps)
{
if (!initialized)
{
return;
}
if (redoSteps.Count < 1) // Nichts da
{
return;
}
redoInAction = true;
for (int i = 0; i < steps; i++)
{
UndoStep redoStep = redoSteps.Pop();
BeginUndoStep(redoStep.undoName);
DoUndoStep(redoStep);
EndUndoStep();
}
//TODO_WPF!!!!!!!!!!!!!!!mainWindowControl.UpdateSelection();
redoInAction = false;
}
/// <summary>
/// Startet einen neuen Undo-Step. Mehrere Änderungen (UndoEntrys) werden in einem
/// Undo-Step zusammengefasst. Muss immer aufgerufen werden, bevor etwas in die Undo-Liste
/// eingetragen wird.
/// </summary>
/// <param name="undoName"></param>
public void BeginUndoStep(string undoName)
{
if (!initialized)
{
return;
}
depth++;
if (currentUndoStep != null)
{
return;
}
currentUndoStep = new UndoStep(undoName);
}
/// <summary>
/// Führt einen einzelnen Undo-Step aus.
/// </summary>
/// <param name="step"></param>
private void DoUndoStep(UndoStep step)
{
while (step.undoEntry.Count > 0)
{
UndoEntry entry = step.undoEntry.Pop();
switch (entry.undoAction)
{
case UndoAction.ChangeProperty:
{
// Property-Änderung rückgängig machen.
HitbaseControl hlControl = mainWindowControl.FindHitbaseControlFromID(entry.controlID);
mainWindowControl.ChangeProperty(hlControl, entry.property, entry.value);
break;
}
case UndoAction.Delete:
{
// Löschen eines Objektes rückgängig machen.
HitbaseControl newControl = mainWindowControl.AddControlFromStream(entry.parentControlID, entry.controlIndex, entry.serializedObject, true);
newControl.SetTabIndex(entry.tabIndex);
break;
}
case UndoAction.New:
{
HitbaseControl ctl = mainWindowControl.FindHitbaseControlFromID(entry.controlID);
HitbaseControl parent;
if (entry.parentControlID != 0)
{
parent = mainWindowControl.FindHitbaseControlFromID(entry.controlID);
}
else
{
parent = null;
}
mainWindowControl.DeleteHitbaseControlWithChilds(parent, ctl);
break;
}
}
}
}
