public override HistoryMemento PerformAction(DocumentWorkspace documentWorkspace)
{
HistoryMemento memento = null;
int activeLayerIndex = documentWorkspace.ActiveLayerIndex;
if (activeLayerIndex != (documentWorkspace.Document.Layers.Count - 1))
{
HistoryMemento memento2 = new SwapLayerFunction(activeLayerIndex, activeLayerIndex + 1).Execute(documentWorkspace);
HistoryMemento[] actions = new HistoryMemento[] { memento2 };
memento = new CompoundHistoryMemento(StaticName, StaticImage, actions);
documentWorkspace.ActiveLayer = (Layer)documentWorkspace.Document.Layers[activeLayerIndex + 1];
}
return(memento);
}
public override HistoryMemento PerformAction(DocumentWorkspace documentWorkspace)
{
HistoryMemento hm = null;
int index = documentWorkspace.ActiveLayerIndex;
if (index != documentWorkspace.Document.Layers.Count - 1)
{
SwapLayerFunction slf = new SwapLayerFunction(index, index + 1);
HistoryMemento slfhm = slf.Execute(documentWorkspace);
hm = new CompoundHistoryMemento(
StaticName,
StaticImage,
new HistoryMemento[] { slfhm });
documentWorkspace.ActiveLayer = (Layer)documentWorkspace.Document.Layers[index + 1];
}
return(hm);
}