public override HistoryMemento OnExecute(IHistoryWorkspace historyWorkspace)
{
CompoundHistoryMemento chm = new CompoundHistoryMemento(this.historyName, this.undoImage);
if (!historyWorkspace.Selection.IsEmpty)
{
DeselectFunction df = new DeselectFunction();
EnterCriticalRegion();
HistoryMemento hm = df.Execute(historyWorkspace);
chm.PushNewAction(hm);
}
FlipLayerHistoryMemento flha = new FlipLayerHistoryMemento(
null,
null,
historyWorkspace,
this.layerIndex,
this.flipType);
EnterCriticalRegion();
HistoryMemento flha2 = flha.PerformUndo();
chm.PushNewAction(flha);
return(chm);
}
public override HistoryMemento OnExecute(IHistoryWorkspace historyWorkspace)
{
object savedSelection = null;
List <HistoryMemento> actions = new List <HistoryMemento>();
if (!historyWorkspace.Selection.IsEmpty)
{
savedSelection = historyWorkspace.Selection.Save();
DeselectFunction da = new DeselectFunction();
HistoryMemento hm = da.Execute(historyWorkspace);
actions.Add(hm);
}
ReplaceDocumentHistoryMemento rdha = new ReplaceDocumentHistoryMemento(null, null, historyWorkspace);
actions.Add(rdha);
CompoundHistoryMemento chm = new CompoundHistoryMemento(
StaticName,
ImageResource.Get("Icons.MenuImageFlattenIcon.png"),
actions);
// TODO: we can save memory here by serializing, then flattening on to an existing layer
Document flat = historyWorkspace.Document.Flatten();
EnterCriticalRegion();
historyWorkspace.Document = flat;
if (savedSelection != null)
{
SelectionHistoryMemento shm = new SelectionHistoryMemento(null, null, historyWorkspace);
historyWorkspace.Selection.Restore(savedSelection);
chm.PushNewAction(shm);
}
return(chm);
}