public void Redo()
{
if (!CanRedo)
{
throw new InvalidOperationException("Redo stack is empty");
}
var memento = redoStack.Pop();
changeTracker.TrackChanges = false;
changeTracker.OnBeforeRedo(memento);
if (BeforeRedo != null)
{
BeforeRedo(this, new UndoRedoEventArgs {
Memento = memento
});
}
memento = memento.Restore();
undoStack.Push(memento);
if (AfterRedo != null)
{
AfterRedo(this, new UndoRedoEventArgs {
Memento = memento
});
}
changeTracker.TrackChanges = trackChanges;
}
public void Redo()
{
if (!CanRedo)
{
throw new InvalidOperationException("Redo stack is empty");
}
var memento = redoStack.Pop();
changeTracker.AddNewMementoCallback = AddUndoForRedo;
if (BeforeRedo != null)
{
BeforeRedo(this, new UndoRedoEventArgs {
Memento = memento
});
}
changeTracker.OnBeforeRedo(memento);
try
{
EditActionSettings.Disabled = true;
memento.Restore();
}
finally
{
EditActionSettings.Disabled = false;
}
changeTracker.OnAfterRedo(memento);
if (AfterRedo != null)
{
AfterRedo(this, new UndoRedoEventArgs {
Memento = memento
});
}
changeTracker.AddNewMementoCallback = AddUndo;
}